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Volume 4 (2021): Issue 1 (September 2021)

Volume 3 (2020): Issue 1 (September 2020)

Volume 2 (2019): Issue 1 (September 2019)

Volume 1 (2018): Issue 1 (September 2018)

Conference Details
Format
Conference
eISSN
2545-2827
First Published
30 Sep 2018
Publication timeframe
1 time per year
Languages
English

Search

Volume 4 (2021): Issue 1 (September 2021)

Conference Details
Format
Conference
eISSN
2545-2827
First Published
30 Sep 2018
Publication timeframe
1 time per year
Languages
English

Search

47 Articles

Part 1: Engineering and Technology. Editor: Witold Biały

Open Access

Modeling and Simulation of the Methane Risk in the Mining Production Process

Published Online: 01 Sep 2021
Page range: 1 - 13

Abstract

Abstract

The mining production process is of particular importance for the area of Upper Silesia, as well as a very significant impact on the economy of the entire country. One of the most common and most dangerous threats to this process is the methane hazard. It is related to the presence of methane in coal seams, which under appropriate conditions is a flammable and explosive gas. Events related to the methane hazard constitute a huge threat to the life and health of the crew as well as the infrastructure and equipment of excavations. Therefore, they have a huge impact on the efficiency of the entire mining production process. In order to ensure the safety and continuity of the production process, it is necessary to prevent the formation of dangerous methane concentrations in the area covered by the operation. One of the tools that can be used to assess the state of methane hazard are model studies supported by numerical simulation. Based on these studies, the article analyzes the distribution of methane concentration in the mining area. This area included an actual mining excavation in one of the hard coal mines. The model tests were carried out with the use of the finite volume method in the ANSYS Fluent software. The obtained results can be used for preventive measures and constitute an important source of information for the assessment of the methane hazard state.

Keywords

  • numerical modeling and simulations
  • mining production process
  • process efficiency
  • methane hazard
  • hard coal mining
Open Access

Multi-Criteria Assessment of Ergonomic Conditions of Work. Case Study

Published Online: 01 Sep 2021
Page range: 14 - 22

Abstract

Abstract

The supervision of OHS conditions (working conditions and the realization of work tasks) is one of the basic obligations of the employer. The number and variety of describing elements (and thus being subject to assessment) means that synthetic measures (measures that are one-dimensional images of complex phenomena) are more and more frequently applied to solve problems of that type. Although the methods of multivariate statistics used for this purpose differ in the way they treat assessment criteria (defining mutual dependency thresholds, unifying the field of compared criteria), the final effect of their application always offers the option to replace the entire set of features describing a given object with one variable (aggregate). The article presents a potential applicability of one of the so-called discrete multi-criteria decision-making methods (Simple Additive Weighting), which allows to determine a linear combination of normalized elements of the decision matrix and the elements of weight vector. As part of the article, the working conditions at 5 workstations were assessed (a miner’s workstation in 5 underground mine workings being excavated), taking into account 8 assessment criteria (6 were cost criteria and 2 – criteria of qualitative character). In effect of the application of the Simple Additive Weighting method, we could determine the ranking vector R, which allowed to order the examined objects and to carry out a comprehensive assessment of OSH conditions occurring in them.

Keywords

  • discrete multi-criteria decision
  • OHS
Open Access

Analysis of Exploitation Parameters in Drainage Boreholes of the Longwall Demethylation System. Case Study

Published Online: 01 Sep 2021
Page range: 23 - 39

Abstract

Abstract

In hard coal mines with methane, there is often a need to apply demethylation in order to keep the methane concentration not exceeding 2% in the ventilation air. The basic demethylation method in longwall areas is through drainage boreholes made in the roof rocks of the coal bed, from top gate, in front of the longwall. The drainage boreholes are usually made in bundles, in a fan-shaped arrangement, with several boreholes in each bundle. The paper presents the results of measurements and tests of the efficiency of a bundle of four drainage boreholes drilled approximately 100 m in front of the longwall face. The efficiency of individual boreholes was analyzed in time and depending on the distance of borehole outlets from the longwall face. It was found that there is a large variation in the extraction of air-methane mixture by individual drainage boreholes, as well as large differences in the efficiency of individual drainage boreholes during the longwall extraction process.

Keywords

  • hard coal mine
  • degasification
  • methane concentration
  • drainage boreholes
Open Access

Fuzzy Controller for Simplified Model of Mobile Vehicle Steering Booster

Published Online: 01 Sep 2021
Page range: 40 - 50

Abstract

Abstract

The article is aimed on the possibility of fuzzy control of an experimental device that represents the simplified model of automobile steering booster. The main part of model consists of a graphical unit illustrating the control of speed and supporting torque. Based on the structure of fuzzy controller, various counts and configurations of fuzzy sets were defined, whereby the relevant results were achieved by their application on controlled system.

Keywords

  • Automobile Booster
  • Fuzzy Sets
  • Fuzzy Controller
  • Speed Control
Open Access

Possibility of Application of the User Interface of a Conventional Smartphone for Communication of Graphical Information with a Special HW/SW Device

Published Online: 01 Sep 2021
Page range: 51 - 64

Abstract

Abstract

This article is focused on enhancement of HW/SW device by cooperation with a smartphone interface. The device was a programmable Lego Mindstorms Education EV3 set in the form of a robot designed to solve the Rubik’s Cube. The aim of the research was to replace the built-in color sensor with a camera that would allow the cube scanning process to be accelerated. Two approaches were chosen to meet the goal: the NXTcam camera, accessible as an accessory to expand the set, and the camera built into the smartphone. The use of NXTcam led to better scan time, but this result was prone to external influences. The camera on the smartphone sped up the scanning process to 57% of the original time. The impact of external factors on the outcome was significantly lower, compared to NXTcam. In the experiment, the cube solving process was observed in natural light, with addition distractive light source and in artificial light.

Keywords

  • Graphic Information Transfer
  • Lego Mindstorms Education
Open Access

Ergonomic Aspects of Choosing Children’s Robotics for the Smallest Children and Preschool Children

Published Online: 01 Sep 2021
Page range: 65 - 74

Abstract

Abstract

At present, there are a large number of manufacturers operating on the market, which are engaged in the production and distribution of mechatronic and robotic toys. These toys range from the cheapest and simplest to sophisticated costly models for play education. Looking at the market offer, it can be stated that mechatronic toys are being produced, which are intended for children of several months. When developing children’s and educational robotics, it is, therefore, necessary to take into account the psychomotor development of the child. Respecting or not respecting it has a major impact on the success of the toy for the consumer and the fulfillment of the educational goal for which it is intended. Last but not least, in connection with the child’s development, the question arises as to what ergonomic principles, when designing toys intended for children depending on age, need to be respected and implemented into solutions to eliminate problems related to the development of children’s and educational robotics. The subject of interest in the article is the age groups of children from birth to preschool age. The aim of the article is to identify which factors in the construction of children’s robotic toys for the youngest children up to the period of preschool age are key from the point of view of ergonomics.

Keywords

  • children
  • ergonomics
  • toys
  • psychomotor development of the child
  • children´s robotics
Open Access

Application of Selected Reverse Engineering Procedures Based on Specific Requirements

Published Online: 01 Sep 2021
Page range: 75 - 85

Abstract

Abstract

The paper describes a solution of reverse engineering tasks using the equipment of the laboratory of the Technical University in Zvolen. The first task was linked to evaluation of a wear rate of the tool used to for mulching and elimination of unwanted wood or weed vegetation. The obtained data will be used as a base line for determination of the time interval for the tool replacement. We developed a prototype of components and their drawing documentation for a single-purpose machine for cutting barley. We created the 3D model using the method of photogrammetry. The finished drawing documentation and prototypes were handed over to the company KRUP. Finally, we identified the most suitable procedures for creating a model of a part with a complex shape. We tested the techniques of editing the point cloud processing, as well as of smoothing the surfaces and automating the creation of partial geometric elements of the model. Based on the properties of the component, which is the starting point of the entire reverse engineering process and from the achieved results, we set recommendations for the selection of appropriate procedures.

Keywords

  • reverse engineering
  • scanning
  • 3D model
  • point cloud
Open Access

Analysis of Similarities Between the European Union Countries in Terms of Sustainable Energy and Climate Development

Published Online: 01 Sep 2021
Page range: 86 - 96

Abstract

Abstract

Energy and climate issues are an essential part of the sustainable development process of the EU countries. They are also one of the primary objectives of international policy, as evidenced by their inclusion in Agenda 2030, adopted by the UN in 2015 among the Sustainable Development Goals. The implementation of these goals is also taking place in the EU countries. Although climate protection and energy transition activities have been undertaken in the EU for years, individual countries significantly vary in this regard. The aim of the research, the results of which are presented in this paper, was to analyze similarities between the EU countries in terms of sustainable energy and climate development. The analysis was conducted for all EU countries, based on 14 indicators characterizing energy and climate sustainability, in energy, climate, social and economic dimensions. Kohonen’s artificial neural networks were used for analysis. The research was conducted for data from the period between 2009-2018. The results showed that in the studied period (10 years), significant differences were found between the EU countries. A high level of energy and climate development was reported for Sweden, Denmark, Austria and France, among other states, and a low level for e.g., the Czech Republic, Poland and Bulgaria.

Keywords

  • sustainable energy and climate development
  • similarity analysis
  • EU countries
  • artificial neural networks
Open Access

Monitoring of Groundwater Quality With Cokriging of Geochemical and Geoelectrical Measurements

Published Online: 01 Sep 2021
Page range: 97 - 106

Abstract

Abstract

The study presents the possibility of using geostatistical methods for monitoring groundwater quality. Poland is one of the largest copper producers in the world. However, the extraction and production of copper requires constant care for the natural environment. Reservoir Żelazny Most which is situated in South – Western Poland was designed to store flotation tailings out of nearby copper mines. It is one of the biggest industrial dumps in the world. The reservoir stores huge amounts of tailings and industrial water. Water migrating from dump to groundwater could be a potential source of contamination with chlorides, sulphates, heavy metals, and other hazardous substances used in ore separation process in the copper mining industry, like detergent and phenols. Monitoring system around Żelazny Most dump, which was designed to track harmful substances concentrations in groundwater, contains measuring wells and piezometers. They are used to collect groundwater samples for chemical analyses. The idea of the study was to integrate information provided by chemical analyses and geoelectrical measurements by cokriging method, utilizing correlation between electrical resistance of the soil solution and total dissolved solids concentration in groundwater. This enabled to obtain spatial distribution of total dissolved solids concentrations in groundwater at the part of eastern foreground of Żelazny Most dump.

Keywords

  • cokriging
  • geoelectrical measurements
  • geostatistics
  • total dissolved solids
  • Żelazny Most dump
Open Access

Visual Monitoring as a Tool in Industrial Security Engineering. Case Study

Published Online: 01 Sep 2021
Page range: 107 - 119

Abstract

Abstract

The article presents the use of video monitoring in a production company on the example of municipal thermal power plant. After analyzing the hazards and work inconvenience occurring in the analyzed enterprise, video surveillance zones have been designated with the division into the indoor and outdoor monitoring system. Video surveillance is provided for production, auxiliary and delivery processes. Moreover, video monitoring performs a control function over the occupation health in workstations at risk of explosion or fire. In addition, observation points have been set up in the visual monitoring system, among which the internal ones are served by the dispatcher responsible for the production process, while the external are operated by security guards of the facility.

Keywords

  • video monitoring
  • supervision of the production process
  • video surveillance zones
Open Access

Design of Construction and Controlling of Automation Technics in Order to Improve Skills of Students

Published Online: 01 Sep 2021
Page range: 120 - 131

Abstract

Abstract

The article summarizes the experience, skills of the students of technical subjects teaching methodologies using a number of software products. Solve specific assigned tasks described in this paper. Task is about the problems of automation and mechanization in the industry. That helps to improve the skills of praxis, through the design of construction and of controlling. Specifically it focuses on introducing automation in the wood industry. Article describes the design of the automation process for marking wooden hammers. Similar problems are solved by students in Computer Aided (CA) systems. The control process of automation is realized through the electro-pneumatic circuits. These circuits are creating in software FluidSIM 4 that is used as a simulation tool. FluidSIM 4 is comprehensive software for creation, simulation, instruction and study of electro-pneumatic, electro-hydraulic and digital circuits.

Keywords

  • CA system
  • Education
  • Simulation
  • Subject
  • Construction
Open Access

Using FCAW with Electrodes Based on Fe-Ti-Mo-B-C System for Increasing of Durability of Junk Removal Tools

Published Online: 01 Sep 2021
Page range: 132 - 141

Abstract

Abstract

In this work were analyzed factors and working conditions that leads to the wearing of junk mills tools that are a part of junk removal equipment used in drilling and workover of borehole. Such equipment is a part of oil and gas industry and work under condition of intense abrasive wearing with increased pressures and cyclic loads. Was established that traditional hardfacing materials based on the Fe-Cr-C system are not effective for improvement of abrasion resistance of elements of such equipment due to their low crack resistance and low hardness of chromium carbides. The aim of this work was to increase a durability of that equipment by using of flux cored electrodes with reaction components of pure metal powders, which leads to forming the fine-grained structure with increased hardness. Powders of Ti, Mo, B4C and their combinations were used. Structures of the hardfacing coatings were investigated by method of metallography, scanning electron microscopy (SEM). Abrasion wear tests were held under condition of fixed and non-fixed abrasion. Using of pure metal powders led to formation of a fine-grained structure with grains of Mo2FeB2 that forms around TiC, which work as modifier. It was investigated that the researched material based on Fe-Ti-Mo-C-B system that was used for increasing the wear resistance of junk mills led to increasing of the TBO period in 1.5-1.6 times comparing with serial hardfacing materials based on tungsten.

Keywords

  • abrasion resistance
  • flux cored electrodes
  • hardfacing
  • junk mills
  • microstructure
Open Access

Problems of Quality Assurance and Selection of Control Criteria in Laser Cutting Operations of Wood and Wood-Like Materials

Published Online: 01 Sep 2021
Page range: 142 - 152

Abstract

Abstract

The paper presents the problem of quality assurance of the laser cutting process of wood and wood-like materials and the selection of optimal processing conditions with respect to the required evaluation criteria. An experiment conducted to identify processing difficulties and potential causes of defects is described. Samples of three materials: pine wood, hardwood plywood and mixed wood HDF with a thickness of 4 mm were cut with a CO2 laser and visually inspected and the width of the slit was measured. It was found that there was a relationship between the laser operating parameters and the obtained slit width. The higher the cutting speed, the narrower the slit. The obtained numerical results allowed to formulate technological guidelines on the selection of laser parameters depending on the material. In turn, based on the visual inspection, defects depending on the material properties were identified. An example of a non-conformity identification manual was developed, which includes illustrations to enable comparative analysis in production. It was found that in the studied process, different criteria can be adopted to qualify a product as compliant or non-compliant. A dilemma may then arise as to which criterion is more important. Therefore, a quality evaluation criteria verification sheet was proposed. Furthermore, due to the fact that the success of the laser cutting process is also dependent on other factors, a list of risks to the process was made.

Keywords

  • laser cutting
  • quality criteria
  • defectiveness
  • risk
Open Access

An Overview of the Impacts of Geological Hazards on Production

Published Online: 01 Sep 2021
Page range: 153 - 165

Abstract

Abstract

Throughout history, human beings have been affected by the ongoing events in their environment. While some of the events take place in the sphere they live on, some of them are in the way that events outside the earth affect the world. Necessary measures should be taken on time and in place so that people are not adversely affected or at least minimally affected by the aforementioned events. Geological hazards are the most important risks that occur in the environment of human beings and have a high probability of damaging people’s life and property. In terms of risk management of geological hazards, which are divided into four main groups as seismic, hydro-meteorological, terrain instability and volcanic hazard and have their own characteristics, the efforts to prevent and reduce losses for each of them also differ within themselves. In this review article, geological hazards were introduced in general by giving various examples from the world, the effects of geological disasters on the economy and production were discussed, and the points to be considered for each risk were tried to be emphasized.

Keywords

  • production and geological hazards
  • seismic hazard
  • hydro-meteorological hazards
  • terrain instability
  • volcanic hazard
Open Access

The Prospects of Abrasive Treatment of Tough-To-Machine Materials

Published Online: 01 Sep 2021
Page range: 166 - 177

Abstract

Abstract

In current conditions, great attention is paid to the quality of parts, which is in many ways determined by finishing operations of mechanical treatment, with surface grinding being the most widespread. Grinding process efficiency, abrasive tool wear intensity, machined surface quality and other features of grinding process depend on properties of the environment, where the cutting process takes place. Forced changing of conditions of this environment is one of the ways to control and optimize the grinding process, which can be reached due to finding new technological decisions. One of the most promising directions to solve this problem is the process of face grinding with discontinuous grinding tool and supply of cooling fluid or air in the cutting zone directly. Carried analysis of features of face grinding has shown that heat density can be decreased by the usage by grooved wheels with vortex air cooling or by supply of cooling-lubricant technological fluid. Obtained dependences of temperature field of part surface during grinding establish the influence of the length of working shoulders and grooves, vortex tubes number, outflow rate, temperature and flow rate of cold vortex flow of air. These data provide conscious control over the process of discontinuous face grinding by changing wheel grain size and grinding speed.

Keywords

  • face grinding
  • grinding wheel
  • steel
  • vortex air cooling
  • cooling-lubricant technological fluid
Open Access

Global Trends in the Development of Battery-Powered Underground Mining Machines

Published Online: 01 Sep 2021
Page range: 178 - 189

Abstract

Abstract

The growing requirements and needs of users as well as a strong emphasis on pro-ecological solutions cause an increasing interest in battery-powered electric mining machines. Internal combustion machines consume oxygen, generate noise, fumes and heat, which affects work in underground mines, and minimizing these factors is expensive. Battery solutions allow achieving the same operational parameters of machines with significantly higher safety, comfort and work culture. The problem, however, is their range or working time. The article presents global trends in the development of battery-operated machines for underground mining. Various machines in battery-powered versions have been presented. The applied solutions have been discussed, especially in the field of battery replacement or recharging and braking energy recovery. Manufacturers around the world offer more and more battery-powered machines. Some producers are announcing complete replacement of combustion solutions with electric ones within the next few years. There are also hydrogen machines on the horizon, which will probably be the next step on the road to a zero-emission industry.

Keywords

  • self-propelled mining machines
  • battery power
  • battery drive
  • underground mining
  • braking energy recovery
  • battery replacement
Open Access

Using MCDM Methods to Assess the Extent to which the European Union Countries Use Renewable Energy

Published Online: 01 Sep 2021
Page range: 190 - 199

Abstract

Abstract

Energy security is one of the basic tasks carried out by individual countries. It is of great socio-economic and political importance and constitutes the basis for independent development of both economies and groups of countries. Access to adequate resources of affordable and environmentally neutral energy in the production process is the basis for sustainable energy development. Therefore, an important element of sustainable energy is its environmental neutrality. Currently, this condition is fulfilled to the greatest extent by energy produced from renewable energy sources (RES). Renewable energy development is taking place all over the world, but the European Union (EU) is a definite leader. In its energy policy, the importance and role of RES in the energy production structure has been growing systematically for many years. Introduced regulations and energy strategies caused member states to take extensive actions to achieve the set targets for RES. However, the large diversity of the EU countries makes this process occur with different intensity. Thus, it was justified to conduct research to assess the level of renewable energy use in the EU countries in a 15-year perspective (2004-2019). The research was based on a set of 4 indicators characterizing the use of renewable energy in the EU countries by means of the WASPAS method (from the group of MCDM methods). The results showed that a high level of RES use in the whole studied period was found in Sweden, Austria, Latvia and Finland, and a low level, for 2004, was found in Cyprus, Luxembourg and Malta, and for 2019 – in Luxembourg and Malta.

Keywords

  • European Union
  • renewable energy
  • RES
  • sustainable development
  • WASPAS method
  • MCDM method
Open Access

Availability Study of a Longwall Shearer Including Phases of its Operation

Published Online: 01 Sep 2021
Page range: 200 - 211

Abstract

Abstract

The mining production process includes a number of sub-processes, the most important of which is mining the rock mass. In this process, increasingly modern mining machines are being used to replace human labor and to achieve high productivity. Full utilization of the potential of these machines is of great importance for the efficiency of individual stages and the whole process of mining production. In the process of mining the rock mass, the use of machinery of a mechanized longwall system is of fundamental significance. Their availability, efficiency and reliability significantly affect the efficiency of the whole mining production process. The paper refers to the availability of a longwall shearer as the basic machine of a mechanized mining system. Based on the analysis of diagnostic signals, recorded by the industrial automation system, the availability of the longwall shearer was determined for 10 selected cycles of its operation. The analysis also included the phases of these cycles, treated as separate periods of the shearer’s work. This division is a consequence of a great difference in the character of the shearer’s work in particular phases of the operating cycle. The analysis covered the phases of cutting, mining and shunting. The determined temporal waveforms and the shearer’s availability in these phases show their great diversity. Therefore, the results indicated the necessity to analyze the operation of mining machines in their characteristic periods, which can be the basis for minimizing unplanned interruptions in their operation and improving the efficiency of their use.

Keywords

  • mining machines
  • efficiency
  • machine availability
  • OEE
  • industrial automation
Open Access

Modern Micro-Controllers to Improve the Quality of Production Process

Published Online: 01 Sep 2021
Page range: 212 - 220

Abstract

Abstract

In general, the production processes are more and more complex. This is the result of more and more sophisticated materials used, the pressure to save them as well as other production resources (ecological perspective), also the tendency to buy mobile products lighter and less power consuming than before. In previous years using highly specialized technology was very costly for the company. Nowadays, this situation is possible to be changed because of emerging types of modern micro-controllers and variety of compatible sensors. Some of those micro-controllers are more power saving, some are more powerful in terms of computing power. The common denominator is that both purchasing them as well as programming is possible for ordinary person, a hobbyist building DIY projects. This sheds new light to the professional usage of modern micro-controllers-based solutions that can become possible to offer comparable level of precision at the fraction of cost. The authors recognized the strong potential in modern micro-controllers and made the research among professionals in the area of production companies. The outcome of research showed that the professionals share the opinion of the authors. Therefore, the outbreak of usage of such inexpensive solutions in professional applications is expected. However, the research showed, that there is possible to find single situations, where usage of modern micro-controllers may be limited, for example in the company targeted to produce hand-made products or handicraft (manufacture).

Keywords

  • automation solutions
  • embedded systems
  • assembly supporting technologies
  • production assistive technologies
Open Access

The Evaporation Estimation on Lake Most

Published Online: 01 Sep 2021
Page range: 221 - 231

Abstract

Abstract

After finishing the mining process, the best way to deal with the residual of open-cut coal mines in the north-western region of the Czech Republic has been proposed to be hydric recultivation. The area of our study is the first artificial Lake Most (formerly known as Ležáky-Most coal quarry) finished in 2014 and opened to the public in 2020 for recreational purposes. Since the lake is a closed system without natural inflow and outflow, the prediction of evaporation plays a crucial role in the securitization of long-term sustainability based on the capability of keeping the stable level of a dimension of the final water level. In this paper, we use the historical data consisting of the altitude of the lake level, its area, the perimeter of the shoreline, and especially the volume of refilled water. These data are compared against the computational methods; namely, the Penman-Monteith Equation and Hargreaves-Samani model calibrated by the method proposed in our previous work.

Keywords

  • evaporation
  • hydric recultivation
  • calibration
  • modelling
Open Access

Towards a Self-Service Approach in the Printing Industry. An Investigation of State of the Art Technologies Along with Industry 4.0 Changes

Published Online: 01 Sep 2021
Page range: 232 - 244

Abstract

Abstract

It is commonly believed that the current economic state of many countries is at the stage of the fourth industrial revolution. The changes resulting from this revolution are affecting all sectors of the economy, including the printing sector. The aim of this article is to analyse the state of the art technology in sheetfed printing and then to identify the challenges for further changes in the technology of this type of printing as well as technological and organisational changes in the processes of preparation and realisation of printing products. The article uses case studies of selected technologies offered by key technology suppliers in this area and case studies of selected business entities – manufacturers of printing products. The research approach adopted in this article also takes conceptual work into account. It was found that the observed changes in the printing industry are consistent with the assumptions of the Industry 4.0 concept in the aspect of the digitisation and mass personalisation of products, which leads to the thesis that in the future personalised digital printing ordered through self-service will play a dominant role.

Keywords

  • Industry 4.0
  • servitization
  • mass-customization
  • printing industry
Open Access

The Impact of Remote Working During the COVID-19 Epidemic on Employee Well-being

Published Online: 01 Sep 2021
Page range: 245 - 254

Abstract

Abstract

The aim of the research was to answer the question whether the remote work imposed on workers during the COVID-19 epidemic has an impact on their well-being, and if so, how. The research material consisted of the results of a survey conducted among the employees referred to remote work in connection with the announced state of the epidemic in Poland. The research was conducted in the period from July 31 to August 19, 2020. The research was conducted using a questionnaire method, the study was attended by 199 respondents. A survey questionnaire was used in the study and the results obtained were statistically processed. The research carried out allowed us to obtain the results of the self-assessment of employees referred to work in the homme-office in terms of their mental well-being and physical well-being.

Keywords

  • Well-being
  • COVID-19
  • epidemic
  • home office
Open Access

Changes in Production Efficiency During the COVID-19 Pandemic

Published Online: 01 Sep 2021
Page range: 255 - 265

Abstract

Abstract

The limitations and new safety restrictions related to the COVID-19 pandemic caused by SARS-CoV-2 had a strong impact on the functioning of numerous manufacturing companies. This paper presents the results of a survey conducted among employees of manufacturing companies. A preliminary comparison of the production efficiency (and volume) in terms of the size of enterprises was made – results obtained for micro, small and medium entrprise, as well as for large production enterprise. On the basis of the presented results, it was unequivocally stated that it was much easier for micro and small enterprises to adapt to the introduced changes. They easily expanded the range of products and thus recorded a slight increase in production. Large enterprises, due to the narrow scope of their operations, unfortunately recorded a significant decrease in production – which may also be caused by the discontinuity of the supply chain.

Keywords

  • production
  • efficiency
  • COVID-19 pandemic
  • SMEs
  • supply chain
Open Access

Commercialization Processes of Innovative Solutions Developed at the KOMAG Institute – Thresholds and Barriers

Published Online: 01 Sep 2021
Page range: 266 - 280

Abstract

Abstract

Commercialization processes of research and development project results are costly and risky. That is why it is indispensable to analyze all the advantages and disadvantages very thoroughly as well as to identify potential risks and barriers which may emerge during commercialization processes of innovative solutions. The Authors presented in the article the results of their research work results oriented onto an identification potential barriers based on analyses of case studies carried out according to the Integrated Commercialization Model (ICM), developed by them. They highlighted the role of marketing communication in commercialization processes, giving some examples of mistakes commonly made and suggesting a new paradigm of marketing activities with use of the state-of-the-art efficient carriers of marketing information e.g. Internet, Intranet, Social Media etc. Marketing communication is presented as a complex tool enabling to strengthen collaborative relationships between science and industry within the framework of creating and implementing innovative solutions. The article also contains some recommendations and guidelines concerning thresholds and barriers impeding a successful transition of commercialization processes of R&D results and of technology transfer.

Keywords

  • Integrated Commercialization Model (ICM)
  • Marketing communication
  • commercialization of results
  • R&D works
  • technology transfer
Open Access

Determination of Coal Cutting Forces Using the Cutting Head of POU-BW/01-WAP Device

Published Online: 01 Sep 2021
Page range: 281 - 289

Abstract

Abstract

The paper presents a method for measuring and recording the forces involved in the coal cutting process. Moreover, a method for visualization of all forces involved in the cutting process was described. In the following part, the construction and principle of operation of a device for determination of forces involved in the cutting process (coal mining), referred to by the author as POU-BW/01-WAP, are presented. Resistance extensometry was used to measure the forces. This is the only device in the world that determines two of three force components that take part in the cutting process. For this purpose, two independent measuring blocks were used, which are strain gauges of force: cutting (Fs) and knife pressure (Fd). In order to register these forces, a real mining knife used in longwall shearer drums was applied – i.e. tangential-rotary. The equipment has the ATEX certificate allowing for operation in real conditions as a device intended for use in potentially explosive atmospheres – in accordance with the directive 94/9/EC. It has received many awards at world fairs for inventions and innovative solutions.

Keywords

  • workability
  • cutting forces
  • measurement
  • recording
  • strain gauges
Open Access

Determination of Traffic Noise on the Selected Area of the City of Zabrze

Published Online: 01 Sep 2021
Page range: 290 - 300

Abstract

Abstract

The article is a substantive summary of research conducted by the Institute of Production Engineering of the Silesian University of Technology in Zabrze, covering the determination of ways to reduce traffic noise in the selected area of the city of Zabrze using measurement and simulation methods. The analysis was conducted within the Project Based Learning (PBL) project which aimed at teaching a selected group of students teamwork, synthesizing information from various sources, making decisions and taking responsibility for them, planning and organizing work and proper time management.

Keywords

  • Strategic acoustic map
  • traffic noise
  • Project Based Learning
Open Access

Analysis the Influence of Steel Sheet Production Technology on the Quality Products in Steel Service Polska

Published Online: 01 Sep 2021
Page range: 301 - 308

Abstract

Abstract

The process of production and processing and preparation for distribution of steel products is associated with the requirements of maintaining appropriate procedures. They allow, in accordance with industry standards to avoid unforeseen problems associated with the preparation, implementation and finalization of activities aimed at achieving the intended purpose, which is a finished product of adequate quality and customer satisfaction. It is not always possible in the production process to meet all the requirements and technological, organizational and human factor recommendations. The analysis of selected problems, which includes the content of the article allows to significantly determine the factors and parameters associated with the preparation and technical implementation affecting the implementation of the intended objectives of the company, i.e. achieving an appropriate level of quality and minimizing the defects in the process of steel sheet preparation. Analysis of selected parameters was made on the basis of data obtained in the company operating on the international market Company Steel Service Poland. At the request of company representatives, the name has been changed due to the production data used in the article, which may be considered as sensitive. The article contains data based on research carried out in Steel Service Poland. Selected problems are the subject of analysis of steel sheets cutting processes with the analysis of causes of customer complaints with reference to the produced steel products. Selected steel grades and factors affecting the efficiency of the technological process are presented. The analysed set of factors translates into the level of product quality and reduction of arising defects.

Keywords

  • production
  • material
  • steel
  • quality
  • defects
Open Access

Building a Circular Economy Model for Managing Exploitation of Household Used Devices on the Example of Washing Machine Driven by DC Motor Along with Components

Published Online: 01 Sep 2021
Page range: 309 - 316

Abstract

Abstract

In the article, the authors describe, using the example of a selected class of technical means, their concept of replacing the “classical” linear management (exploitation) model with a circular economy (CE) model. An example of an object for which the authors plan to test the feasibility of the concept presented above is a household washing machine driven by a DC motor. The description of this object included in the article considers its complexity and multiplicity of assemblies, sub-assemblies, and elements. The DC electric motor driving the washing machine was considered the most important from the point of view of the created model, especially in terms of the possibility of maintenance and repair. For such an engine, the article presents the maintenance and disposal model as elements of the concept of building a ‘circular’ business model. The authors assumed that the formal basis for such a model would be the so-called circular model. The methodology and plan of the research carried out at Super Asia washing machine company in Pakistan were introduced, and the research results were shown. With the use of these results, an attempt was made to assess the requirements that the application of the CE business model places on manufacturers of a selected class of devices, both in their manufacture, repair, sharing and dematerialization. The concept of further research is described at the end of the article.

Keywords

  • Circular economy
  • exploitation
  • maintenance management
  • washing machine
  • DC electric motor
Open Access

Analysis of the Possibility of Using Unmanned Aerial Vehicles and Thermovision for the Stocktaking of Big Game

Published Online: 01 Sep 2021
Page range: 317 - 329

Abstract

Abstract

Classic methods of stocktaking big game living in a given area have many disadvantages. The main result is the need to ensure appropriate terrain and weather conditions and also require the involvement of a large number of people, so-called observers. The development of technology makes it possible to create new stocktaking methods that will not have as many of the above-mentioned disadvantages, while reducing the cost of stocktaking and increasing its accuracy. This paper presents an analysis of the possibility of using unmanned aerial vehicles, so-called drones, in combination with the observation of game in the infrared wave range with the use of a thermal imaging camera. The paper presents the concept of such a solution, which will of course be further developed. Raids are planned with the use of thermal cameras over areas according to strictly defined transects and subjecting the obtained images to analysis, also with the use of artificial intelligence methods. This article was written as part of the PBL project carried out by a group of students from the Silesian University of Technology under the supervision of dr inż. Arkadiusz Boczkowski.

Keywords

  • stocktaking of big game
  • wild animals
  • thermal imaging camera
  • dron
Open Access

Analysis of Options to Reduce Noise Exposure to Shooters on Sport Shooting Ranges

Published Online: 01 Sep 2021
Page range: 330 - 342

Abstract

Abstract

The intensive development of sport shooting and the significant increase in the number of people using sport and recreational shooting ranges also increases the risk of hearing damage to shooters, due to exposure to impulse noise from the shots of firearms. This article discusses the methodology for assessing shooters’ exposure to noise and identifies and extensively discusses possible ways to minimise this exposure. It then describes a research experiment carried out to measure and calculate the effectiveness of noise reduction by means of acoustic silencers when shooting with typical weapons in the most popular sporting and hunting calibres. The experiment also included firing tests with subsonic ammunition. On this basis, conclusions were drawn regarding the possibility of reducing impulse noise during shooting and the possibility of eliminating the risk of hearing damage.

Keywords

  • noise
  • shooting range
  • acoustic silencers
  • exposure to noise
  • noise risk assessment
Open Access

Operational Tests of a Modular Installation and Transport Assembly of Steel Arch Support in Underground Excavations

Published Online: 01 Sep 2021
Page range: 343 - 354

Abstract

Abstract

The roof support, especially the ŁP yielding steel arch support, is transported and assembled in the face with the use of auxiliary machines. This activity in Polish underground mines causes numerous problems, which until present have not been solved. Currently, transport and assembly are carried out manually, while the roadheader and suspended rail are used only to a small extent. Therefore, the modular installation and transport assembly was developed jointly by FAMA Sp. z o. o. and AGH University of Science and Technology. The solution in question enables performing a number of functions (including transport and assembly of all kinds of support arches), which are not available in currently manufactured equipment. The proposed manipulator solves numerous problems occurring during the installation of the steel arch support in an underground mining excavation and significantly improves the process of drilling galleries. This innovative solution considerably differs from the existing ones, and its greatest advantage is versatility with regard to the cross-section and equipment of the roadway, as well as a wide range of functions. In addition, it can also be used for reloading works. The modular installation and transport assembly together with a platform, a temporary mechanized roof support and a mining machine, make up a mechanizes roadheader complex, which enables continuous mining, loading and installing the permanent support in underground workings.

Keywords

  • underground mining
  • steel arch support
  • modular installation and transport assembly
  • safety

Part 2: Social Sciences. Editor: Patrycja Hąbek

Open Access

Incorporating Sustainability into Supplier Development Process

Published Online: 01 Sep 2021
Page range: 355 - 364

Abstract

Abstract

Nowadays companies are more and more often expected to take responsibility for social and environmental impacts of their activities. When doing business social responsible company takes into consideration a wide range of its stakeholder’s expectations but also spread the social and environmental responsibility idea within the supply chain. Suppliers are the key stakeholders which directly influence the producer in terms of costs and quality of the offered products. However suppliers who offer high quality materials or components at an attractive price but at the same time not paying attention to their social and environmental impacts may devastate the buyer sustainability performance. Therefore the companies are trying to support suppliers in assuring their social and environmental responsibility as with this approach both sides benefit. In the study the authors used the case study method to present the proposal of integrating sustainability issues into already functioning supplier development process of a manufacturing company.

Keywords

  • supplier development
  • sustainable development
  • corporate social responsibility
  • supplier development program
  • sustainability
Open Access

Comparative Analysis of Selected Car Parks

Published Online: 01 Sep 2021
Page range: 365 - 375

Abstract

Abstract

Statistics from the Central Statistical Office (CSO) state that the total number of motor vehicles and mopeds in Poland in 2019 was 31,989,313 units. According to the Central Register of Vehicles (CEPiK) maintained by the Ministry of Digitalisation, the number of motor vehicles registered in Poland in 2019 was 23,878.8 thousand units. Among them, 18,302.4 thousand passenger cars were registered. The constantly increasing number of vehicles on the road has a significant impact on the deterioration of road capacity and drivers’ frustration with parking, especially during rush hours in the centres of large cities. Hence, urban logistics, including the country’s parking policy, is extremely important to a significant proportion of citizens. Unfortunately, citizens have different perspectives on parking issues. Most drivers expect to be able to leave their car as close as possible to their destination, while some residents, especially non-motorised ones, are against the conversion of free city space into car parks. In response to the presented issues, a comparative analysis of selected types of car parks was carried out. This analysis was one of the stages of the project entitled: “Analysis of the environmental impact of a vertical parking solution using life cycle assessment at the design stage” carried out at the Silesian University of Technology.

Keywords

  • parking areas
  • vertical parking areas
  • horizontal parking areas
  • on-street parking areas
  • off-street parking areas
Open Access

Research Towards Sustainable Parking Solutions

Published Online: 01 Sep 2021
Page range: 376 - 386

Abstract

Abstract

The aim of the article is to identify problems and public expectations regarding parking and the application of different parking solutions. Based on the results of a CAWI questionnaire survey, an evaluation of selected parking solutions is presented. Among others, vertical parking has been taken into account, the use of which is associated with a reduction in the area required for parking and an improvement in environmental performance characteristics at the use stage. This study is part of the search for sustainable solutions in city logistics. The results of the study serve as an initial insight into the opinions of one group of users in the life cycle of a car park. They can be used as an introduction to the eco-design of parking solutions and to compare different parking systems. The study was carried out as part of a project entitled: “Analysis of the environmental impact of a vertical parking solution using life cycle assessment at the design stage” carried out at the Silesian University of Technology.

Keywords

  • parking
  • sustainable development
  • questionnaire
  • smart city
  • transport
Open Access

Psychology of Creativity and Innovation in Engineering and Business Curriculum

Published Online: 01 Sep 2021
Page range: 387 - 394

Abstract

Abstract

The paper describes the development of a new course. Psychology of innovation, which is in the process of being approved as an elective course for four different majors: engineering, business, psychology, and art. The paper describes the course content, course educational objective, weekly assignments and projects. The new course is expected to be approved and implemented in the Fall 2021 Semester. The Course is expected to strengthen innovative potential of students from four different majors.

Keywords

  • Psychology innovation
  • innovative potential
  • students
Open Access

Statistical and Econometric Analysis of Selected Effects of COVID-19 Pandemic

Published Online: 01 Sep 2021
Page range: 395 - 407

Abstract

Abstract

The paper examines the impact of the COVID-19 pandemic on macroeconomic activity in the selected European countries. The studies are based on monthly and quarterly indicators of GDP, unemployment rates and key indicators of the tourism sector. To present how COVID-19 has affected these macroeconomic variables, statistic data from the three periods are compared. Namely, data are collected from the pre-pandemic period, i.e. the fourth quarter of 2019 as the reference period, the second period covers the first quarter of 2020 and means the beginning of the pandemic, and the third one covers second quarter of 2020, during which the pandemic has spread to all the analyzed countries. The following statistical techniques are used in the research: regression analysis, the hierarchical grouping of agglomerations, k-means method, and selected non-parametric tests (Kruskal-Wallis test for a selected group of countries and Kolmogorov-Smirnov test for a selected pair of countries). The results show the significant impact of the pandemic on the level of gross domestic product, unemployment rate and turism sector. In most cases, a correlation between incidence of COVID-19 infections, unemployment rate and GDP is observed. The statistical techniques also allow to demonstrate the similarities and differences in the response of the economies to the COVID-19 pandemic. Central Statistical Offices of the selected countries are the main data source and for all calculations Statistica version 13.3. is used.

Keywords

  • cluster analysis
  • COVID-19 pandemic
  • GDP
  • regression
  • unemployment
Open Access

Migration Processes in a Globalizing Society: Challenges for Donor and Recipient Countries

Published Online: 01 Sep 2021
Page range: 408 - 420

Abstract

Abstract

The article examines the influence of migration processes on the formation and development of production capacities of countries. The main functions that perform population migration are indicated. Reasonably, the process of labor migration affects the redistribution of industry types that develop in different countries. The impact of international labor migration on the economies of donor and recipient countries is determined. It has been proven that labor migration has different effects on donor and recipient countries. Researched the question of how the human, social and financial capital of labor migrants can be better used for their counties of origin becomes more and more urgent. There is an opinion that labor migration is not always negative. It is emphasized that educational migration can have a positive impact on the development of industry in the donor country, provided that the population returns home. It is noted that Ukraine often acts as a labor donor for many countries, including Poland. The main spheres of activity in which Ukrainians work abroad are given. The main benefits that donor and recipient countries receive from population migration are identified. It is emphasized that the return flows, ie the return of emigrants home from earnings abroad, change over time the ratio of benefits and losses in the donor country.

Keywords

  • migration processes
  • educational migration
  • consequences of migration
  • donor country
  • recipient country
  • migrants
  • cooperation
Open Access

Technology Analysis and the Need of a Value Framework

Published Online: 01 Sep 2021
Page range: 421 - 430

Abstract

Abstract

The idea that technology is only a value-neutral instrument that can be used for good and bad purposes is not tenable anymore. Technology shapes our human life in all its dimensions and determines the direction of social changes. In the paper, I first show a few arguments in favor of the value-ladenness of technology and then approaches developed in response to that fact. I will argue that none of those responses is satisfactory, for they lack a formative value framework that would serve for decisions and their justification in the realm of technology development. Building such a framework requires a transdisciplinary and cooperative effort.

Keywords

  • value-ladenness of technology
  • technology assessment
  • value sensitive design
  • axiometrics
  • formative value framework
Open Access

Retail Service Quality Scale (RSQS) as an Example of Quality Service Scale Used in Traditional Trade

Published Online: 01 Sep 2021
Page range: 431 - 441

Abstract

Abstract

We make purchases almost every day. We buy some products very often (e.g. food), others less often (e.g. furniture, car). Shops, selling products to customers, are not their producers, but rather provide them with services (commercial service). It is important that the customer, after making the purchase, is satisfied not only with the product, but also with the purchasing process itself. In order to determine what are the reasons for customer satisfaction or dissatisfaction, it is necessary to assess the quality of services, i.e. the process of making purchases by customers. In the available literature, there are many methods that are used to assess the service quality. However, their use is associated with the need to identify attributes that could well describe the service provision process, but also be a source of knowledge about customer satisfaction. The Retail Service Quality Scale (RSQS) developed by Dabholkar and his colleagues is applicable to assess the quality of services provided by shops, so it can be a ready-made tool that does not require the researchers to define attributes, as would be the case when using traditional methods. The aim of the paper was to assess the quality of operation of a traditional shop using the RSQS methodology. This study was carried out using a paper questionnaire that contained the attributes proposed in the RSQS. The survey was conducted among customers of a selected shop. The analyzed results made it possible to determine the quality level of commercial services provided by the research shop and to indicate its strengths and weaknesses. Additionally, the possibility of using the ready-made RSQS scale to assess the quality of commercial services provided in Polish economic realities was confirmed.

Keywords

  • RSQS
  • service quality
  • trade-related service
  • traditional trade
Open Access

Spatial Analysis of the Availability of Health and Social Services for People with Special Needs

Published Online: 01 Sep 2021
Page range: 442 - 452

Abstract

Abstract

The health care system should offer and provide a variety of services without undue delay. Due to numerous technical, financial and human resource constraints, not all services can be offered both without restrictions and in equal measure in places of different sizes of residence. As a result of qualitative and quantitative research, a map of accessibility to social and health services was drawn up, taking into consideration the division of the country into voivodeships with different population. Spatial analysis showed great diversity in terms of service availability. Voivodships with the highest accessibility of health and social services are Dolnośląskie, Opolskie and Świętokrzyskie, while the worst situation is in Wielkopolskie. Moreover, the article identifies the main problems that people with limited functionality encounter when using health and social services.

Keywords

  • sustainable development
  • health services
  • social services
  • spatial analysis
  • people with special needs
Open Access

Limitation of Manufacturing Defects of the Selected Product in the Glass Mill

Published Online: 01 Sep 2021
Page range: 453 - 464

Abstract

Abstract

In the era of global market and internationalization of enterprises, an extremely important element influencing the competitiveness of companies is ensuring high quality of manufactured products, taking into account the requirements and expectations of buyers. At the moment when defects appear in the manufactured product, the production plant ceases to meet the expectations of customers. Not only is this related to the costs of production or complaints, but above all to the loss of credibility and good customer opinion. It is extremely important to identify and analyze the causes of this phenomenon as soon as possible, without allowing it to repeat itself. The problem of manufacturing defects becomes even more important when it poses a threat to the health or life of the customer. This also applies to products manufactured for the purposes of food protection. This article presents the results of the research that enabled the development of a method to reduce the production defects of a selected product in a glass factory. In order to achieve the goal, an analysis of the production process of the selected glass packaging was carried out, which allowed to identify defects and determine the causes and effects of their formation. Based on the presented research results, improvement measures have been proposed, consisting in developing a new organization of work in the area of quality control.

Keywords

  • quality control
  • qualitative methods
  • defectiveness
  • glass products
Open Access

Technological Capabilities of Well Cementing

Published Online: 01 Sep 2021
Page range: 465 - 478

Abstract

Abstract

Cementing of casing string is a final operation before the next stage of well construction; it provides maximum operational life of the well. Cementing of casing string is carried out with the use of technology, based on squeezing of the whole volume of drilling mud by special grouting composition. The main purposes of cementing include isolation of water-bearing horizon, strengthening of borehole walls in unconsolidated and unstable rocks. Well cementing process is divided into five subsequent operations. Firstly, grouting mixture is prepared in concrete mixers (cementing units) with necessary water-to-cement ratio and additives. Secondly, prepared grouting solution is injected in a well. Thirdly, the solution is squeezed into the space between the casing pipes and wellbore walls. Then it is necessary to wait until the cement sheath is hardened. And at last, quality control is carried out. For convenient transportation, the equipment for well cementing is installed on the truck chassis (KAMAZ, URAL and etc.). All components are poured in concrete mixer, then the water is added and everything is being mixed until formation of uniform mass, which is later pumped in a well. Oil and Gas Industry Safety Regulations say that «calculated endurance of casing string cementing should not exceed 75% of time of cement thickening, established by laboratory tests». Therefore, it is necessary to carry out all operations of injection of fluids into the well as soon as possible without any incompliances of the cementing technology. With cementing material used and its water-to-cement ratio of 0.5, the average time of cement thickening is 120 minutes, according to laboratory tests. Therefore, a set of operations of injection of fluids should not exceed 90 minutes.

Keywords

  • cementing of casing string
  • isolation of water-bearing horizon
  • cement slurry injection
  • squeezing
Open Access

Quality Policy With Regard to the Orientation Towards Improvement Among Industrial Enterprises with Various Types of Organizational Culture

Published Online: 01 Sep 2021
Page range: 479 - 488

Abstract

Abstract

The article is one of a series of articles (Molenda, 2020) in which the results of studies on the assessment of the quality policy in industrial enterprises operating in Poland have been described. When carrying out the surveys in the years 2015-2019, in addition to the quality policy, the type of organizational culture of enterprises was identified, among other things. This allowed to divide enterprises into 4 groups, depending on the dominant type of organizational culture identified according to the Cameron-Quinn methodology (Cameron K., Quinn R. 2003). This study compares the quality policies of these enterprises in terms of their orientation towards improvement characteristic of the TQM philosophy. The first part of the article describes the issue of the quality policy in the context of organizational culture. The body of the article contains the results of studies conducted among 166 enterprises. A preliminary statistical analysis of the results allowed to answer the question of what is the level of orientation of the implemented quality policy towards improvement and whether this level varies depending on the organizational culture.

Keywords

  • quality
  • quality policy
  • quality culture
  • QMS
  • TQM
Open Access

PN-ISO 37120 Standard – Known or Unknown by Local Administration – Preliminary Study

Published Online: 01 Sep 2021
Page range: 489 - 498

Abstract

Abstract

Silesian cities are facing economic changes related, among others, to low-carbon transformation. The PN-ISO 37120 standard, which requires the analysis of a number of indicators that determine the directions of city development in particular areas of its functioning, may become a tool supporting city authorities in those activities. Having the above in mind, the authors of the article attempted to find an answer to the question whether the local administration employees of selected Silesian cities have knowledge of the PN-ISO 37120:2015 standard today, as it is an interesting tool for the implementation of the requirements for modern cities. Therefore, the knowledge of the content of the standard by the local government personnel seems to be necessary in order to decide whether this standard is an appropriate tool for the development of a particular city/municipality or not. The study was a pilot project and it involved two cities located in the Silesian agglomeration.

Keywords

  • ISO 37120 standard
  • Smart City
  • local administration
  • management
Open Access

Chatbot as a Tool for Knowledge Sharing in the Maintenance and Repair Processes

Published Online: 09 Oct 2021
Page range: 499 - 508

Abstract

Abstract

In the era of digitization and general access to Internet resources, it seems natural to expect fast, direct, and tailored access to the knowledge of interest. The research shows that the use of modern technologies is not reserved only for industrial solutions, but can be applied in common use. Solutions based on artificial intelligence can provide solutions to many problems of the modern world. This is particularly visible in the era of challenges related to ecology (e.g. minimization of paper consumption) and expectations of fast access to information regardless of place and time. Treating chatbots as a tool supporting the customer in current activities, quick problem-solving shows the potential and care for the image of the producers. Developing the functionality of virtual assistants used for marketing activities with the functionality of technical support can bring tangible benefits both in the economic and social spheres. It should be noted that electronic versions of documents, knowledge transferred in an interactive form can be easily updated and presented in different forms. This increases the attractiveness of transmitted knowledge, users can choose the appropriate form, and access to these resources becomes easier. Artificial intelligence-based tools in the form of chatbots (also called virtual assistants) seem to be a solution worthy of interest. This paper presents the process of developing a virtual assistant to support the maintenance and repair activities of small household appliances. A chatbot aims at gathering in one place and then providing dedicated knowledge resources to an individual user on a just-in-time basis.

Keywords

  • knowledge sharing
  • maintenance
  • chatbot
  • AI
  • virtual assistant
Open Access

Private and Public Sector Employer Actions for Home Office Workers During the COVID-19 Epidemic

Published Online: 09 Oct 2021
Page range: 509 - 519

Abstract

Abstract

A research was conducted among the employees referred to work in the home office in connection with the announced state of the epidemic in Poland. The research was conducted using a questionnaire method, the study was attended by 199 respondents. The research is burdened with an error in the selection of statistical sample units, which resulted from the respondents’ involvement and their truthfulness. The aim of the article is to assess the activities of employers from the private and state sectors in Poland, related to the delegation of employees to work in the home office, and to analyze the skills and possibilities of self-organization of work by employees. An important result of the survey was to demonstrate the differences in the behavior of public and private sector employers. The study shows that the private sector has adapted better to sudden changes than the state sector.

Keywords

  • home office
  • epidemic
  • COVID-19
  • activities of employers
  • work flexibility
  • job satisfaction
  • work efficiency
Open Access

The Way of Improvement of Quality of Life of Older Persons as Users and Maintainers of Technical Means

Published Online: 09 Oct 2021
Page range: 520 - 528

Abstract

Abstract

In the article the way of improvement quality of life as users and maintainers of technical means is presented. It is assumed that it is necessary to keep the fundamental of sustainable development. Therefore the application of the scheme of the process of satisfying needs is shown. It helps establish the activities necessary to achieve this goal and enables to plan required information resources. In the range of exploitation and design tasks the application of original strategy of exploitation by older persons was proposed. This strategy uses 6R method which in the future will be supplemented on elements commonly executed strategies and policies of exploitation. Decision making in accordance with proposed strategy will be possible by performing calculations and simulation with the use of multidisciplinary model, whose conception was indicated in the article and which uses matrix of assessment of the quality of life.

Keywords

  • quality of life
  • older persons
  • human engineering
  • exploitation of technical means
  • psychology
47 Articles

Part 1: Engineering and Technology. Editor: Witold Biały

Open Access

Modeling and Simulation of the Methane Risk in the Mining Production Process

Published Online: 01 Sep 2021
Page range: 1 - 13

Abstract

Abstract

The mining production process is of particular importance for the area of Upper Silesia, as well as a very significant impact on the economy of the entire country. One of the most common and most dangerous threats to this process is the methane hazard. It is related to the presence of methane in coal seams, which under appropriate conditions is a flammable and explosive gas. Events related to the methane hazard constitute a huge threat to the life and health of the crew as well as the infrastructure and equipment of excavations. Therefore, they have a huge impact on the efficiency of the entire mining production process. In order to ensure the safety and continuity of the production process, it is necessary to prevent the formation of dangerous methane concentrations in the area covered by the operation. One of the tools that can be used to assess the state of methane hazard are model studies supported by numerical simulation. Based on these studies, the article analyzes the distribution of methane concentration in the mining area. This area included an actual mining excavation in one of the hard coal mines. The model tests were carried out with the use of the finite volume method in the ANSYS Fluent software. The obtained results can be used for preventive measures and constitute an important source of information for the assessment of the methane hazard state.

Keywords

  • numerical modeling and simulations
  • mining production process
  • process efficiency
  • methane hazard
  • hard coal mining
Open Access

Multi-Criteria Assessment of Ergonomic Conditions of Work. Case Study

Published Online: 01 Sep 2021
Page range: 14 - 22

Abstract

Abstract

The supervision of OHS conditions (working conditions and the realization of work tasks) is one of the basic obligations of the employer. The number and variety of describing elements (and thus being subject to assessment) means that synthetic measures (measures that are one-dimensional images of complex phenomena) are more and more frequently applied to solve problems of that type. Although the methods of multivariate statistics used for this purpose differ in the way they treat assessment criteria (defining mutual dependency thresholds, unifying the field of compared criteria), the final effect of their application always offers the option to replace the entire set of features describing a given object with one variable (aggregate). The article presents a potential applicability of one of the so-called discrete multi-criteria decision-making methods (Simple Additive Weighting), which allows to determine a linear combination of normalized elements of the decision matrix and the elements of weight vector. As part of the article, the working conditions at 5 workstations were assessed (a miner’s workstation in 5 underground mine workings being excavated), taking into account 8 assessment criteria (6 were cost criteria and 2 – criteria of qualitative character). In effect of the application of the Simple Additive Weighting method, we could determine the ranking vector R, which allowed to order the examined objects and to carry out a comprehensive assessment of OSH conditions occurring in them.

Keywords

  • discrete multi-criteria decision
  • OHS
Open Access

Analysis of Exploitation Parameters in Drainage Boreholes of the Longwall Demethylation System. Case Study

Published Online: 01 Sep 2021
Page range: 23 - 39

Abstract

Abstract

In hard coal mines with methane, there is often a need to apply demethylation in order to keep the methane concentration not exceeding 2% in the ventilation air. The basic demethylation method in longwall areas is through drainage boreholes made in the roof rocks of the coal bed, from top gate, in front of the longwall. The drainage boreholes are usually made in bundles, in a fan-shaped arrangement, with several boreholes in each bundle. The paper presents the results of measurements and tests of the efficiency of a bundle of four drainage boreholes drilled approximately 100 m in front of the longwall face. The efficiency of individual boreholes was analyzed in time and depending on the distance of borehole outlets from the longwall face. It was found that there is a large variation in the extraction of air-methane mixture by individual drainage boreholes, as well as large differences in the efficiency of individual drainage boreholes during the longwall extraction process.

Keywords

  • hard coal mine
  • degasification
  • methane concentration
  • drainage boreholes
Open Access

Fuzzy Controller for Simplified Model of Mobile Vehicle Steering Booster

Published Online: 01 Sep 2021
Page range: 40 - 50

Abstract

Abstract

The article is aimed on the possibility of fuzzy control of an experimental device that represents the simplified model of automobile steering booster. The main part of model consists of a graphical unit illustrating the control of speed and supporting torque. Based on the structure of fuzzy controller, various counts and configurations of fuzzy sets were defined, whereby the relevant results were achieved by their application on controlled system.

Keywords

  • Automobile Booster
  • Fuzzy Sets
  • Fuzzy Controller
  • Speed Control
Open Access

Possibility of Application of the User Interface of a Conventional Smartphone for Communication of Graphical Information with a Special HW/SW Device

Published Online: 01 Sep 2021
Page range: 51 - 64

Abstract

Abstract

This article is focused on enhancement of HW/SW device by cooperation with a smartphone interface. The device was a programmable Lego Mindstorms Education EV3 set in the form of a robot designed to solve the Rubik’s Cube. The aim of the research was to replace the built-in color sensor with a camera that would allow the cube scanning process to be accelerated. Two approaches were chosen to meet the goal: the NXTcam camera, accessible as an accessory to expand the set, and the camera built into the smartphone. The use of NXTcam led to better scan time, but this result was prone to external influences. The camera on the smartphone sped up the scanning process to 57% of the original time. The impact of external factors on the outcome was significantly lower, compared to NXTcam. In the experiment, the cube solving process was observed in natural light, with addition distractive light source and in artificial light.

Keywords

  • Graphic Information Transfer
  • Lego Mindstorms Education
Open Access

Ergonomic Aspects of Choosing Children’s Robotics for the Smallest Children and Preschool Children

Published Online: 01 Sep 2021
Page range: 65 - 74

Abstract

Abstract

At present, there are a large number of manufacturers operating on the market, which are engaged in the production and distribution of mechatronic and robotic toys. These toys range from the cheapest and simplest to sophisticated costly models for play education. Looking at the market offer, it can be stated that mechatronic toys are being produced, which are intended for children of several months. When developing children’s and educational robotics, it is, therefore, necessary to take into account the psychomotor development of the child. Respecting or not respecting it has a major impact on the success of the toy for the consumer and the fulfillment of the educational goal for which it is intended. Last but not least, in connection with the child’s development, the question arises as to what ergonomic principles, when designing toys intended for children depending on age, need to be respected and implemented into solutions to eliminate problems related to the development of children’s and educational robotics. The subject of interest in the article is the age groups of children from birth to preschool age. The aim of the article is to identify which factors in the construction of children’s robotic toys for the youngest children up to the period of preschool age are key from the point of view of ergonomics.

Keywords

  • children
  • ergonomics
  • toys
  • psychomotor development of the child
  • children´s robotics
Open Access

Application of Selected Reverse Engineering Procedures Based on Specific Requirements

Published Online: 01 Sep 2021
Page range: 75 - 85

Abstract

Abstract

The paper describes a solution of reverse engineering tasks using the equipment of the laboratory of the Technical University in Zvolen. The first task was linked to evaluation of a wear rate of the tool used to for mulching and elimination of unwanted wood or weed vegetation. The obtained data will be used as a base line for determination of the time interval for the tool replacement. We developed a prototype of components and their drawing documentation for a single-purpose machine for cutting barley. We created the 3D model using the method of photogrammetry. The finished drawing documentation and prototypes were handed over to the company KRUP. Finally, we identified the most suitable procedures for creating a model of a part with a complex shape. We tested the techniques of editing the point cloud processing, as well as of smoothing the surfaces and automating the creation of partial geometric elements of the model. Based on the properties of the component, which is the starting point of the entire reverse engineering process and from the achieved results, we set recommendations for the selection of appropriate procedures.

Keywords

  • reverse engineering
  • scanning
  • 3D model
  • point cloud
Open Access

Analysis of Similarities Between the European Union Countries in Terms of Sustainable Energy and Climate Development

Published Online: 01 Sep 2021
Page range: 86 - 96

Abstract

Abstract

Energy and climate issues are an essential part of the sustainable development process of the EU countries. They are also one of the primary objectives of international policy, as evidenced by their inclusion in Agenda 2030, adopted by the UN in 2015 among the Sustainable Development Goals. The implementation of these goals is also taking place in the EU countries. Although climate protection and energy transition activities have been undertaken in the EU for years, individual countries significantly vary in this regard. The aim of the research, the results of which are presented in this paper, was to analyze similarities between the EU countries in terms of sustainable energy and climate development. The analysis was conducted for all EU countries, based on 14 indicators characterizing energy and climate sustainability, in energy, climate, social and economic dimensions. Kohonen’s artificial neural networks were used for analysis. The research was conducted for data from the period between 2009-2018. The results showed that in the studied period (10 years), significant differences were found between the EU countries. A high level of energy and climate development was reported for Sweden, Denmark, Austria and France, among other states, and a low level for e.g., the Czech Republic, Poland and Bulgaria.

Keywords

  • sustainable energy and climate development
  • similarity analysis
  • EU countries
  • artificial neural networks
Open Access

Monitoring of Groundwater Quality With Cokriging of Geochemical and Geoelectrical Measurements

Published Online: 01 Sep 2021
Page range: 97 - 106

Abstract

Abstract

The study presents the possibility of using geostatistical methods for monitoring groundwater quality. Poland is one of the largest copper producers in the world. However, the extraction and production of copper requires constant care for the natural environment. Reservoir Żelazny Most which is situated in South – Western Poland was designed to store flotation tailings out of nearby copper mines. It is one of the biggest industrial dumps in the world. The reservoir stores huge amounts of tailings and industrial water. Water migrating from dump to groundwater could be a potential source of contamination with chlorides, sulphates, heavy metals, and other hazardous substances used in ore separation process in the copper mining industry, like detergent and phenols. Monitoring system around Żelazny Most dump, which was designed to track harmful substances concentrations in groundwater, contains measuring wells and piezometers. They are used to collect groundwater samples for chemical analyses. The idea of the study was to integrate information provided by chemical analyses and geoelectrical measurements by cokriging method, utilizing correlation between electrical resistance of the soil solution and total dissolved solids concentration in groundwater. This enabled to obtain spatial distribution of total dissolved solids concentrations in groundwater at the part of eastern foreground of Żelazny Most dump.

Keywords

  • cokriging
  • geoelectrical measurements
  • geostatistics
  • total dissolved solids
  • Żelazny Most dump
Open Access

Visual Monitoring as a Tool in Industrial Security Engineering. Case Study

Published Online: 01 Sep 2021
Page range: 107 - 119

Abstract

Abstract

The article presents the use of video monitoring in a production company on the example of municipal thermal power plant. After analyzing the hazards and work inconvenience occurring in the analyzed enterprise, video surveillance zones have been designated with the division into the indoor and outdoor monitoring system. Video surveillance is provided for production, auxiliary and delivery processes. Moreover, video monitoring performs a control function over the occupation health in workstations at risk of explosion or fire. In addition, observation points have been set up in the visual monitoring system, among which the internal ones are served by the dispatcher responsible for the production process, while the external are operated by security guards of the facility.

Keywords

  • video monitoring
  • supervision of the production process
  • video surveillance zones
Open Access

Design of Construction and Controlling of Automation Technics in Order to Improve Skills of Students

Published Online: 01 Sep 2021
Page range: 120 - 131

Abstract

Abstract

The article summarizes the experience, skills of the students of technical subjects teaching methodologies using a number of software products. Solve specific assigned tasks described in this paper. Task is about the problems of automation and mechanization in the industry. That helps to improve the skills of praxis, through the design of construction and of controlling. Specifically it focuses on introducing automation in the wood industry. Article describes the design of the automation process for marking wooden hammers. Similar problems are solved by students in Computer Aided (CA) systems. The control process of automation is realized through the electro-pneumatic circuits. These circuits are creating in software FluidSIM 4 that is used as a simulation tool. FluidSIM 4 is comprehensive software for creation, simulation, instruction and study of electro-pneumatic, electro-hydraulic and digital circuits.

Keywords

  • CA system
  • Education
  • Simulation
  • Subject
  • Construction
Open Access

Using FCAW with Electrodes Based on Fe-Ti-Mo-B-C System for Increasing of Durability of Junk Removal Tools

Published Online: 01 Sep 2021
Page range: 132 - 141

Abstract

Abstract

In this work were analyzed factors and working conditions that leads to the wearing of junk mills tools that are a part of junk removal equipment used in drilling and workover of borehole. Such equipment is a part of oil and gas industry and work under condition of intense abrasive wearing with increased pressures and cyclic loads. Was established that traditional hardfacing materials based on the Fe-Cr-C system are not effective for improvement of abrasion resistance of elements of such equipment due to their low crack resistance and low hardness of chromium carbides. The aim of this work was to increase a durability of that equipment by using of flux cored electrodes with reaction components of pure metal powders, which leads to forming the fine-grained structure with increased hardness. Powders of Ti, Mo, B4C and their combinations were used. Structures of the hardfacing coatings were investigated by method of metallography, scanning electron microscopy (SEM). Abrasion wear tests were held under condition of fixed and non-fixed abrasion. Using of pure metal powders led to formation of a fine-grained structure with grains of Mo2FeB2 that forms around TiC, which work as modifier. It was investigated that the researched material based on Fe-Ti-Mo-C-B system that was used for increasing the wear resistance of junk mills led to increasing of the TBO period in 1.5-1.6 times comparing with serial hardfacing materials based on tungsten.

Keywords

  • abrasion resistance
  • flux cored electrodes
  • hardfacing
  • junk mills
  • microstructure
Open Access

Problems of Quality Assurance and Selection of Control Criteria in Laser Cutting Operations of Wood and Wood-Like Materials

Published Online: 01 Sep 2021
Page range: 142 - 152

Abstract

Abstract

The paper presents the problem of quality assurance of the laser cutting process of wood and wood-like materials and the selection of optimal processing conditions with respect to the required evaluation criteria. An experiment conducted to identify processing difficulties and potential causes of defects is described. Samples of three materials: pine wood, hardwood plywood and mixed wood HDF with a thickness of 4 mm were cut with a CO2 laser and visually inspected and the width of the slit was measured. It was found that there was a relationship between the laser operating parameters and the obtained slit width. The higher the cutting speed, the narrower the slit. The obtained numerical results allowed to formulate technological guidelines on the selection of laser parameters depending on the material. In turn, based on the visual inspection, defects depending on the material properties were identified. An example of a non-conformity identification manual was developed, which includes illustrations to enable comparative analysis in production. It was found that in the studied process, different criteria can be adopted to qualify a product as compliant or non-compliant. A dilemma may then arise as to which criterion is more important. Therefore, a quality evaluation criteria verification sheet was proposed. Furthermore, due to the fact that the success of the laser cutting process is also dependent on other factors, a list of risks to the process was made.

Keywords

  • laser cutting
  • quality criteria
  • defectiveness
  • risk
Open Access

An Overview of the Impacts of Geological Hazards on Production

Published Online: 01 Sep 2021
Page range: 153 - 165

Abstract

Abstract

Throughout history, human beings have been affected by the ongoing events in their environment. While some of the events take place in the sphere they live on, some of them are in the way that events outside the earth affect the world. Necessary measures should be taken on time and in place so that people are not adversely affected or at least minimally affected by the aforementioned events. Geological hazards are the most important risks that occur in the environment of human beings and have a high probability of damaging people’s life and property. In terms of risk management of geological hazards, which are divided into four main groups as seismic, hydro-meteorological, terrain instability and volcanic hazard and have their own characteristics, the efforts to prevent and reduce losses for each of them also differ within themselves. In this review article, geological hazards were introduced in general by giving various examples from the world, the effects of geological disasters on the economy and production were discussed, and the points to be considered for each risk were tried to be emphasized.

Keywords

  • production and geological hazards
  • seismic hazard
  • hydro-meteorological hazards
  • terrain instability
  • volcanic hazard
Open Access

The Prospects of Abrasive Treatment of Tough-To-Machine Materials

Published Online: 01 Sep 2021
Page range: 166 - 177

Abstract

Abstract

In current conditions, great attention is paid to the quality of parts, which is in many ways determined by finishing operations of mechanical treatment, with surface grinding being the most widespread. Grinding process efficiency, abrasive tool wear intensity, machined surface quality and other features of grinding process depend on properties of the environment, where the cutting process takes place. Forced changing of conditions of this environment is one of the ways to control and optimize the grinding process, which can be reached due to finding new technological decisions. One of the most promising directions to solve this problem is the process of face grinding with discontinuous grinding tool and supply of cooling fluid or air in the cutting zone directly. Carried analysis of features of face grinding has shown that heat density can be decreased by the usage by grooved wheels with vortex air cooling or by supply of cooling-lubricant technological fluid. Obtained dependences of temperature field of part surface during grinding establish the influence of the length of working shoulders and grooves, vortex tubes number, outflow rate, temperature and flow rate of cold vortex flow of air. These data provide conscious control over the process of discontinuous face grinding by changing wheel grain size and grinding speed.

Keywords

  • face grinding
  • grinding wheel
  • steel
  • vortex air cooling
  • cooling-lubricant technological fluid
Open Access

Global Trends in the Development of Battery-Powered Underground Mining Machines

Published Online: 01 Sep 2021
Page range: 178 - 189

Abstract

Abstract

The growing requirements and needs of users as well as a strong emphasis on pro-ecological solutions cause an increasing interest in battery-powered electric mining machines. Internal combustion machines consume oxygen, generate noise, fumes and heat, which affects work in underground mines, and minimizing these factors is expensive. Battery solutions allow achieving the same operational parameters of machines with significantly higher safety, comfort and work culture. The problem, however, is their range or working time. The article presents global trends in the development of battery-operated machines for underground mining. Various machines in battery-powered versions have been presented. The applied solutions have been discussed, especially in the field of battery replacement or recharging and braking energy recovery. Manufacturers around the world offer more and more battery-powered machines. Some producers are announcing complete replacement of combustion solutions with electric ones within the next few years. There are also hydrogen machines on the horizon, which will probably be the next step on the road to a zero-emission industry.

Keywords

  • self-propelled mining machines
  • battery power
  • battery drive
  • underground mining
  • braking energy recovery
  • battery replacement
Open Access

Using MCDM Methods to Assess the Extent to which the European Union Countries Use Renewable Energy

Published Online: 01 Sep 2021
Page range: 190 - 199

Abstract

Abstract

Energy security is one of the basic tasks carried out by individual countries. It is of great socio-economic and political importance and constitutes the basis for independent development of both economies and groups of countries. Access to adequate resources of affordable and environmentally neutral energy in the production process is the basis for sustainable energy development. Therefore, an important element of sustainable energy is its environmental neutrality. Currently, this condition is fulfilled to the greatest extent by energy produced from renewable energy sources (RES). Renewable energy development is taking place all over the world, but the European Union (EU) is a definite leader. In its energy policy, the importance and role of RES in the energy production structure has been growing systematically for many years. Introduced regulations and energy strategies caused member states to take extensive actions to achieve the set targets for RES. However, the large diversity of the EU countries makes this process occur with different intensity. Thus, it was justified to conduct research to assess the level of renewable energy use in the EU countries in a 15-year perspective (2004-2019). The research was based on a set of 4 indicators characterizing the use of renewable energy in the EU countries by means of the WASPAS method (from the group of MCDM methods). The results showed that a high level of RES use in the whole studied period was found in Sweden, Austria, Latvia and Finland, and a low level, for 2004, was found in Cyprus, Luxembourg and Malta, and for 2019 – in Luxembourg and Malta.

Keywords

  • European Union
  • renewable energy
  • RES
  • sustainable development
  • WASPAS method
  • MCDM method
Open Access

Availability Study of a Longwall Shearer Including Phases of its Operation

Published Online: 01 Sep 2021
Page range: 200 - 211

Abstract

Abstract

The mining production process includes a number of sub-processes, the most important of which is mining the rock mass. In this process, increasingly modern mining machines are being used to replace human labor and to achieve high productivity. Full utilization of the potential of these machines is of great importance for the efficiency of individual stages and the whole process of mining production. In the process of mining the rock mass, the use of machinery of a mechanized longwall system is of fundamental significance. Their availability, efficiency and reliability significantly affect the efficiency of the whole mining production process. The paper refers to the availability of a longwall shearer as the basic machine of a mechanized mining system. Based on the analysis of diagnostic signals, recorded by the industrial automation system, the availability of the longwall shearer was determined for 10 selected cycles of its operation. The analysis also included the phases of these cycles, treated as separate periods of the shearer’s work. This division is a consequence of a great difference in the character of the shearer’s work in particular phases of the operating cycle. The analysis covered the phases of cutting, mining and shunting. The determined temporal waveforms and the shearer’s availability in these phases show their great diversity. Therefore, the results indicated the necessity to analyze the operation of mining machines in their characteristic periods, which can be the basis for minimizing unplanned interruptions in their operation and improving the efficiency of their use.

Keywords

  • mining machines
  • efficiency
  • machine availability
  • OEE
  • industrial automation
Open Access

Modern Micro-Controllers to Improve the Quality of Production Process

Published Online: 01 Sep 2021
Page range: 212 - 220

Abstract

Abstract

In general, the production processes are more and more complex. This is the result of more and more sophisticated materials used, the pressure to save them as well as other production resources (ecological perspective), also the tendency to buy mobile products lighter and less power consuming than before. In previous years using highly specialized technology was very costly for the company. Nowadays, this situation is possible to be changed because of emerging types of modern micro-controllers and variety of compatible sensors. Some of those micro-controllers are more power saving, some are more powerful in terms of computing power. The common denominator is that both purchasing them as well as programming is possible for ordinary person, a hobbyist building DIY projects. This sheds new light to the professional usage of modern micro-controllers-based solutions that can become possible to offer comparable level of precision at the fraction of cost. The authors recognized the strong potential in modern micro-controllers and made the research among professionals in the area of production companies. The outcome of research showed that the professionals share the opinion of the authors. Therefore, the outbreak of usage of such inexpensive solutions in professional applications is expected. However, the research showed, that there is possible to find single situations, where usage of modern micro-controllers may be limited, for example in the company targeted to produce hand-made products or handicraft (manufacture).

Keywords

  • automation solutions
  • embedded systems
  • assembly supporting technologies
  • production assistive technologies
Open Access

The Evaporation Estimation on Lake Most

Published Online: 01 Sep 2021
Page range: 221 - 231

Abstract

Abstract

After finishing the mining process, the best way to deal with the residual of open-cut coal mines in the north-western region of the Czech Republic has been proposed to be hydric recultivation. The area of our study is the first artificial Lake Most (formerly known as Ležáky-Most coal quarry) finished in 2014 and opened to the public in 2020 for recreational purposes. Since the lake is a closed system without natural inflow and outflow, the prediction of evaporation plays a crucial role in the securitization of long-term sustainability based on the capability of keeping the stable level of a dimension of the final water level. In this paper, we use the historical data consisting of the altitude of the lake level, its area, the perimeter of the shoreline, and especially the volume of refilled water. These data are compared against the computational methods; namely, the Penman-Monteith Equation and Hargreaves-Samani model calibrated by the method proposed in our previous work.

Keywords

  • evaporation
  • hydric recultivation
  • calibration
  • modelling
Open Access

Towards a Self-Service Approach in the Printing Industry. An Investigation of State of the Art Technologies Along with Industry 4.0 Changes

Published Online: 01 Sep 2021
Page range: 232 - 244

Abstract

Abstract

It is commonly believed that the current economic state of many countries is at the stage of the fourth industrial revolution. The changes resulting from this revolution are affecting all sectors of the economy, including the printing sector. The aim of this article is to analyse the state of the art technology in sheetfed printing and then to identify the challenges for further changes in the technology of this type of printing as well as technological and organisational changes in the processes of preparation and realisation of printing products. The article uses case studies of selected technologies offered by key technology suppliers in this area and case studies of selected business entities – manufacturers of printing products. The research approach adopted in this article also takes conceptual work into account. It was found that the observed changes in the printing industry are consistent with the assumptions of the Industry 4.0 concept in the aspect of the digitisation and mass personalisation of products, which leads to the thesis that in the future personalised digital printing ordered through self-service will play a dominant role.

Keywords

  • Industry 4.0
  • servitization
  • mass-customization
  • printing industry
Open Access

The Impact of Remote Working During the COVID-19 Epidemic on Employee Well-being

Published Online: 01 Sep 2021
Page range: 245 - 254

Abstract

Abstract

The aim of the research was to answer the question whether the remote work imposed on workers during the COVID-19 epidemic has an impact on their well-being, and if so, how. The research material consisted of the results of a survey conducted among the employees referred to remote work in connection with the announced state of the epidemic in Poland. The research was conducted in the period from July 31 to August 19, 2020. The research was conducted using a questionnaire method, the study was attended by 199 respondents. A survey questionnaire was used in the study and the results obtained were statistically processed. The research carried out allowed us to obtain the results of the self-assessment of employees referred to work in the homme-office in terms of their mental well-being and physical well-being.

Keywords

  • Well-being
  • COVID-19
  • epidemic
  • home office
Open Access

Changes in Production Efficiency During the COVID-19 Pandemic

Published Online: 01 Sep 2021
Page range: 255 - 265

Abstract

Abstract

The limitations and new safety restrictions related to the COVID-19 pandemic caused by SARS-CoV-2 had a strong impact on the functioning of numerous manufacturing companies. This paper presents the results of a survey conducted among employees of manufacturing companies. A preliminary comparison of the production efficiency (and volume) in terms of the size of enterprises was made – results obtained for micro, small and medium entrprise, as well as for large production enterprise. On the basis of the presented results, it was unequivocally stated that it was much easier for micro and small enterprises to adapt to the introduced changes. They easily expanded the range of products and thus recorded a slight increase in production. Large enterprises, due to the narrow scope of their operations, unfortunately recorded a significant decrease in production – which may also be caused by the discontinuity of the supply chain.

Keywords

  • production
  • efficiency
  • COVID-19 pandemic
  • SMEs
  • supply chain
Open Access

Commercialization Processes of Innovative Solutions Developed at the KOMAG Institute – Thresholds and Barriers

Published Online: 01 Sep 2021
Page range: 266 - 280

Abstract

Abstract

Commercialization processes of research and development project results are costly and risky. That is why it is indispensable to analyze all the advantages and disadvantages very thoroughly as well as to identify potential risks and barriers which may emerge during commercialization processes of innovative solutions. The Authors presented in the article the results of their research work results oriented onto an identification potential barriers based on analyses of case studies carried out according to the Integrated Commercialization Model (ICM), developed by them. They highlighted the role of marketing communication in commercialization processes, giving some examples of mistakes commonly made and suggesting a new paradigm of marketing activities with use of the state-of-the-art efficient carriers of marketing information e.g. Internet, Intranet, Social Media etc. Marketing communication is presented as a complex tool enabling to strengthen collaborative relationships between science and industry within the framework of creating and implementing innovative solutions. The article also contains some recommendations and guidelines concerning thresholds and barriers impeding a successful transition of commercialization processes of R&D results and of technology transfer.

Keywords

  • Integrated Commercialization Model (ICM)
  • Marketing communication
  • commercialization of results
  • R&D works
  • technology transfer
Open Access

Determination of Coal Cutting Forces Using the Cutting Head of POU-BW/01-WAP Device

Published Online: 01 Sep 2021
Page range: 281 - 289

Abstract

Abstract

The paper presents a method for measuring and recording the forces involved in the coal cutting process. Moreover, a method for visualization of all forces involved in the cutting process was described. In the following part, the construction and principle of operation of a device for determination of forces involved in the cutting process (coal mining), referred to by the author as POU-BW/01-WAP, are presented. Resistance extensometry was used to measure the forces. This is the only device in the world that determines two of three force components that take part in the cutting process. For this purpose, two independent measuring blocks were used, which are strain gauges of force: cutting (Fs) and knife pressure (Fd). In order to register these forces, a real mining knife used in longwall shearer drums was applied – i.e. tangential-rotary. The equipment has the ATEX certificate allowing for operation in real conditions as a device intended for use in potentially explosive atmospheres – in accordance with the directive 94/9/EC. It has received many awards at world fairs for inventions and innovative solutions.

Keywords

  • workability
  • cutting forces
  • measurement
  • recording
  • strain gauges
Open Access

Determination of Traffic Noise on the Selected Area of the City of Zabrze

Published Online: 01 Sep 2021
Page range: 290 - 300

Abstract

Abstract

The article is a substantive summary of research conducted by the Institute of Production Engineering of the Silesian University of Technology in Zabrze, covering the determination of ways to reduce traffic noise in the selected area of the city of Zabrze using measurement and simulation methods. The analysis was conducted within the Project Based Learning (PBL) project which aimed at teaching a selected group of students teamwork, synthesizing information from various sources, making decisions and taking responsibility for them, planning and organizing work and proper time management.

Keywords

  • Strategic acoustic map
  • traffic noise
  • Project Based Learning
Open Access

Analysis the Influence of Steel Sheet Production Technology on the Quality Products in Steel Service Polska

Published Online: 01 Sep 2021
Page range: 301 - 308

Abstract

Abstract

The process of production and processing and preparation for distribution of steel products is associated with the requirements of maintaining appropriate procedures. They allow, in accordance with industry standards to avoid unforeseen problems associated with the preparation, implementation and finalization of activities aimed at achieving the intended purpose, which is a finished product of adequate quality and customer satisfaction. It is not always possible in the production process to meet all the requirements and technological, organizational and human factor recommendations. The analysis of selected problems, which includes the content of the article allows to significantly determine the factors and parameters associated with the preparation and technical implementation affecting the implementation of the intended objectives of the company, i.e. achieving an appropriate level of quality and minimizing the defects in the process of steel sheet preparation. Analysis of selected parameters was made on the basis of data obtained in the company operating on the international market Company Steel Service Poland. At the request of company representatives, the name has been changed due to the production data used in the article, which may be considered as sensitive. The article contains data based on research carried out in Steel Service Poland. Selected problems are the subject of analysis of steel sheets cutting processes with the analysis of causes of customer complaints with reference to the produced steel products. Selected steel grades and factors affecting the efficiency of the technological process are presented. The analysed set of factors translates into the level of product quality and reduction of arising defects.

Keywords

  • production
  • material
  • steel
  • quality
  • defects
Open Access

Building a Circular Economy Model for Managing Exploitation of Household Used Devices on the Example of Washing Machine Driven by DC Motor Along with Components

Published Online: 01 Sep 2021
Page range: 309 - 316

Abstract

Abstract

In the article, the authors describe, using the example of a selected class of technical means, their concept of replacing the “classical” linear management (exploitation) model with a circular economy (CE) model. An example of an object for which the authors plan to test the feasibility of the concept presented above is a household washing machine driven by a DC motor. The description of this object included in the article considers its complexity and multiplicity of assemblies, sub-assemblies, and elements. The DC electric motor driving the washing machine was considered the most important from the point of view of the created model, especially in terms of the possibility of maintenance and repair. For such an engine, the article presents the maintenance and disposal model as elements of the concept of building a ‘circular’ business model. The authors assumed that the formal basis for such a model would be the so-called circular model. The methodology and plan of the research carried out at Super Asia washing machine company in Pakistan were introduced, and the research results were shown. With the use of these results, an attempt was made to assess the requirements that the application of the CE business model places on manufacturers of a selected class of devices, both in their manufacture, repair, sharing and dematerialization. The concept of further research is described at the end of the article.

Keywords

  • Circular economy
  • exploitation
  • maintenance management
  • washing machine
  • DC electric motor
Open Access

Analysis of the Possibility of Using Unmanned Aerial Vehicles and Thermovision for the Stocktaking of Big Game

Published Online: 01 Sep 2021
Page range: 317 - 329

Abstract

Abstract

Classic methods of stocktaking big game living in a given area have many disadvantages. The main result is the need to ensure appropriate terrain and weather conditions and also require the involvement of a large number of people, so-called observers. The development of technology makes it possible to create new stocktaking methods that will not have as many of the above-mentioned disadvantages, while reducing the cost of stocktaking and increasing its accuracy. This paper presents an analysis of the possibility of using unmanned aerial vehicles, so-called drones, in combination with the observation of game in the infrared wave range with the use of a thermal imaging camera. The paper presents the concept of such a solution, which will of course be further developed. Raids are planned with the use of thermal cameras over areas according to strictly defined transects and subjecting the obtained images to analysis, also with the use of artificial intelligence methods. This article was written as part of the PBL project carried out by a group of students from the Silesian University of Technology under the supervision of dr inż. Arkadiusz Boczkowski.

Keywords

  • stocktaking of big game
  • wild animals
  • thermal imaging camera
  • dron
Open Access

Analysis of Options to Reduce Noise Exposure to Shooters on Sport Shooting Ranges

Published Online: 01 Sep 2021
Page range: 330 - 342

Abstract

Abstract

The intensive development of sport shooting and the significant increase in the number of people using sport and recreational shooting ranges also increases the risk of hearing damage to shooters, due to exposure to impulse noise from the shots of firearms. This article discusses the methodology for assessing shooters’ exposure to noise and identifies and extensively discusses possible ways to minimise this exposure. It then describes a research experiment carried out to measure and calculate the effectiveness of noise reduction by means of acoustic silencers when shooting with typical weapons in the most popular sporting and hunting calibres. The experiment also included firing tests with subsonic ammunition. On this basis, conclusions were drawn regarding the possibility of reducing impulse noise during shooting and the possibility of eliminating the risk of hearing damage.

Keywords

  • noise
  • shooting range
  • acoustic silencers
  • exposure to noise
  • noise risk assessment
Open Access

Operational Tests of a Modular Installation and Transport Assembly of Steel Arch Support in Underground Excavations

Published Online: 01 Sep 2021
Page range: 343 - 354

Abstract

Abstract

The roof support, especially the ŁP yielding steel arch support, is transported and assembled in the face with the use of auxiliary machines. This activity in Polish underground mines causes numerous problems, which until present have not been solved. Currently, transport and assembly are carried out manually, while the roadheader and suspended rail are used only to a small extent. Therefore, the modular installation and transport assembly was developed jointly by FAMA Sp. z o. o. and AGH University of Science and Technology. The solution in question enables performing a number of functions (including transport and assembly of all kinds of support arches), which are not available in currently manufactured equipment. The proposed manipulator solves numerous problems occurring during the installation of the steel arch support in an underground mining excavation and significantly improves the process of drilling galleries. This innovative solution considerably differs from the existing ones, and its greatest advantage is versatility with regard to the cross-section and equipment of the roadway, as well as a wide range of functions. In addition, it can also be used for reloading works. The modular installation and transport assembly together with a platform, a temporary mechanized roof support and a mining machine, make up a mechanizes roadheader complex, which enables continuous mining, loading and installing the permanent support in underground workings.

Keywords

  • underground mining
  • steel arch support
  • modular installation and transport assembly
  • safety

Part 2: Social Sciences. Editor: Patrycja Hąbek

Open Access

Incorporating Sustainability into Supplier Development Process

Published Online: 01 Sep 2021
Page range: 355 - 364

Abstract

Abstract

Nowadays companies are more and more often expected to take responsibility for social and environmental impacts of their activities. When doing business social responsible company takes into consideration a wide range of its stakeholder’s expectations but also spread the social and environmental responsibility idea within the supply chain. Suppliers are the key stakeholders which directly influence the producer in terms of costs and quality of the offered products. However suppliers who offer high quality materials or components at an attractive price but at the same time not paying attention to their social and environmental impacts may devastate the buyer sustainability performance. Therefore the companies are trying to support suppliers in assuring their social and environmental responsibility as with this approach both sides benefit. In the study the authors used the case study method to present the proposal of integrating sustainability issues into already functioning supplier development process of a manufacturing company.

Keywords

  • supplier development
  • sustainable development
  • corporate social responsibility
  • supplier development program
  • sustainability
Open Access

Comparative Analysis of Selected Car Parks

Published Online: 01 Sep 2021
Page range: 365 - 375

Abstract

Abstract

Statistics from the Central Statistical Office (CSO) state that the total number of motor vehicles and mopeds in Poland in 2019 was 31,989,313 units. According to the Central Register of Vehicles (CEPiK) maintained by the Ministry of Digitalisation, the number of motor vehicles registered in Poland in 2019 was 23,878.8 thousand units. Among them, 18,302.4 thousand passenger cars were registered. The constantly increasing number of vehicles on the road has a significant impact on the deterioration of road capacity and drivers’ frustration with parking, especially during rush hours in the centres of large cities. Hence, urban logistics, including the country’s parking policy, is extremely important to a significant proportion of citizens. Unfortunately, citizens have different perspectives on parking issues. Most drivers expect to be able to leave their car as close as possible to their destination, while some residents, especially non-motorised ones, are against the conversion of free city space into car parks. In response to the presented issues, a comparative analysis of selected types of car parks was carried out. This analysis was one of the stages of the project entitled: “Analysis of the environmental impact of a vertical parking solution using life cycle assessment at the design stage” carried out at the Silesian University of Technology.

Keywords

  • parking areas
  • vertical parking areas
  • horizontal parking areas
  • on-street parking areas
  • off-street parking areas
Open Access

Research Towards Sustainable Parking Solutions

Published Online: 01 Sep 2021
Page range: 376 - 386

Abstract

Abstract

The aim of the article is to identify problems and public expectations regarding parking and the application of different parking solutions. Based on the results of a CAWI questionnaire survey, an evaluation of selected parking solutions is presented. Among others, vertical parking has been taken into account, the use of which is associated with a reduction in the area required for parking and an improvement in environmental performance characteristics at the use stage. This study is part of the search for sustainable solutions in city logistics. The results of the study serve as an initial insight into the opinions of one group of users in the life cycle of a car park. They can be used as an introduction to the eco-design of parking solutions and to compare different parking systems. The study was carried out as part of a project entitled: “Analysis of the environmental impact of a vertical parking solution using life cycle assessment at the design stage” carried out at the Silesian University of Technology.

Keywords

  • parking
  • sustainable development
  • questionnaire
  • smart city
  • transport
Open Access

Psychology of Creativity and Innovation in Engineering and Business Curriculum

Published Online: 01 Sep 2021
Page range: 387 - 394

Abstract

Abstract

The paper describes the development of a new course. Psychology of innovation, which is in the process of being approved as an elective course for four different majors: engineering, business, psychology, and art. The paper describes the course content, course educational objective, weekly assignments and projects. The new course is expected to be approved and implemented in the Fall 2021 Semester. The Course is expected to strengthen innovative potential of students from four different majors.

Keywords

  • Psychology innovation
  • innovative potential
  • students
Open Access

Statistical and Econometric Analysis of Selected Effects of COVID-19 Pandemic

Published Online: 01 Sep 2021
Page range: 395 - 407

Abstract

Abstract

The paper examines the impact of the COVID-19 pandemic on macroeconomic activity in the selected European countries. The studies are based on monthly and quarterly indicators of GDP, unemployment rates and key indicators of the tourism sector. To present how COVID-19 has affected these macroeconomic variables, statistic data from the three periods are compared. Namely, data are collected from the pre-pandemic period, i.e. the fourth quarter of 2019 as the reference period, the second period covers the first quarter of 2020 and means the beginning of the pandemic, and the third one covers second quarter of 2020, during which the pandemic has spread to all the analyzed countries. The following statistical techniques are used in the research: regression analysis, the hierarchical grouping of agglomerations, k-means method, and selected non-parametric tests (Kruskal-Wallis test for a selected group of countries and Kolmogorov-Smirnov test for a selected pair of countries). The results show the significant impact of the pandemic on the level of gross domestic product, unemployment rate and turism sector. In most cases, a correlation between incidence of COVID-19 infections, unemployment rate and GDP is observed. The statistical techniques also allow to demonstrate the similarities and differences in the response of the economies to the COVID-19 pandemic. Central Statistical Offices of the selected countries are the main data source and for all calculations Statistica version 13.3. is used.

Keywords

  • cluster analysis
  • COVID-19 pandemic
  • GDP
  • regression
  • unemployment
Open Access

Migration Processes in a Globalizing Society: Challenges for Donor and Recipient Countries

Published Online: 01 Sep 2021
Page range: 408 - 420

Abstract

Abstract

The article examines the influence of migration processes on the formation and development of production capacities of countries. The main functions that perform population migration are indicated. Reasonably, the process of labor migration affects the redistribution of industry types that develop in different countries. The impact of international labor migration on the economies of donor and recipient countries is determined. It has been proven that labor migration has different effects on donor and recipient countries. Researched the question of how the human, social and financial capital of labor migrants can be better used for their counties of origin becomes more and more urgent. There is an opinion that labor migration is not always negative. It is emphasized that educational migration can have a positive impact on the development of industry in the donor country, provided that the population returns home. It is noted that Ukraine often acts as a labor donor for many countries, including Poland. The main spheres of activity in which Ukrainians work abroad are given. The main benefits that donor and recipient countries receive from population migration are identified. It is emphasized that the return flows, ie the return of emigrants home from earnings abroad, change over time the ratio of benefits and losses in the donor country.

Keywords

  • migration processes
  • educational migration
  • consequences of migration
  • donor country
  • recipient country
  • migrants
  • cooperation
Open Access

Technology Analysis and the Need of a Value Framework

Published Online: 01 Sep 2021
Page range: 421 - 430

Abstract

Abstract

The idea that technology is only a value-neutral instrument that can be used for good and bad purposes is not tenable anymore. Technology shapes our human life in all its dimensions and determines the direction of social changes. In the paper, I first show a few arguments in favor of the value-ladenness of technology and then approaches developed in response to that fact. I will argue that none of those responses is satisfactory, for they lack a formative value framework that would serve for decisions and their justification in the realm of technology development. Building such a framework requires a transdisciplinary and cooperative effort.

Keywords

  • value-ladenness of technology
  • technology assessment
  • value sensitive design
  • axiometrics
  • formative value framework
Open Access

Retail Service Quality Scale (RSQS) as an Example of Quality Service Scale Used in Traditional Trade

Published Online: 01 Sep 2021
Page range: 431 - 441

Abstract

Abstract

We make purchases almost every day. We buy some products very often (e.g. food), others less often (e.g. furniture, car). Shops, selling products to customers, are not their producers, but rather provide them with services (commercial service). It is important that the customer, after making the purchase, is satisfied not only with the product, but also with the purchasing process itself. In order to determine what are the reasons for customer satisfaction or dissatisfaction, it is necessary to assess the quality of services, i.e. the process of making purchases by customers. In the available literature, there are many methods that are used to assess the service quality. However, their use is associated with the need to identify attributes that could well describe the service provision process, but also be a source of knowledge about customer satisfaction. The Retail Service Quality Scale (RSQS) developed by Dabholkar and his colleagues is applicable to assess the quality of services provided by shops, so it can be a ready-made tool that does not require the researchers to define attributes, as would be the case when using traditional methods. The aim of the paper was to assess the quality of operation of a traditional shop using the RSQS methodology. This study was carried out using a paper questionnaire that contained the attributes proposed in the RSQS. The survey was conducted among customers of a selected shop. The analyzed results made it possible to determine the quality level of commercial services provided by the research shop and to indicate its strengths and weaknesses. Additionally, the possibility of using the ready-made RSQS scale to assess the quality of commercial services provided in Polish economic realities was confirmed.

Keywords

  • RSQS
  • service quality
  • trade-related service
  • traditional trade
Open Access

Spatial Analysis of the Availability of Health and Social Services for People with Special Needs

Published Online: 01 Sep 2021
Page range: 442 - 452

Abstract

Abstract

The health care system should offer and provide a variety of services without undue delay. Due to numerous technical, financial and human resource constraints, not all services can be offered both without restrictions and in equal measure in places of different sizes of residence. As a result of qualitative and quantitative research, a map of accessibility to social and health services was drawn up, taking into consideration the division of the country into voivodeships with different population. Spatial analysis showed great diversity in terms of service availability. Voivodships with the highest accessibility of health and social services are Dolnośląskie, Opolskie and Świętokrzyskie, while the worst situation is in Wielkopolskie. Moreover, the article identifies the main problems that people with limited functionality encounter when using health and social services.

Keywords

  • sustainable development
  • health services
  • social services
  • spatial analysis
  • people with special needs
Open Access

Limitation of Manufacturing Defects of the Selected Product in the Glass Mill

Published Online: 01 Sep 2021
Page range: 453 - 464

Abstract

Abstract

In the era of global market and internationalization of enterprises, an extremely important element influencing the competitiveness of companies is ensuring high quality of manufactured products, taking into account the requirements and expectations of buyers. At the moment when defects appear in the manufactured product, the production plant ceases to meet the expectations of customers. Not only is this related to the costs of production or complaints, but above all to the loss of credibility and good customer opinion. It is extremely important to identify and analyze the causes of this phenomenon as soon as possible, without allowing it to repeat itself. The problem of manufacturing defects becomes even more important when it poses a threat to the health or life of the customer. This also applies to products manufactured for the purposes of food protection. This article presents the results of the research that enabled the development of a method to reduce the production defects of a selected product in a glass factory. In order to achieve the goal, an analysis of the production process of the selected glass packaging was carried out, which allowed to identify defects and determine the causes and effects of their formation. Based on the presented research results, improvement measures have been proposed, consisting in developing a new organization of work in the area of quality control.

Keywords

  • quality control
  • qualitative methods
  • defectiveness
  • glass products
Open Access

Technological Capabilities of Well Cementing

Published Online: 01 Sep 2021
Page range: 465 - 478

Abstract

Abstract

Cementing of casing string is a final operation before the next stage of well construction; it provides maximum operational life of the well. Cementing of casing string is carried out with the use of technology, based on squeezing of the whole volume of drilling mud by special grouting composition. The main purposes of cementing include isolation of water-bearing horizon, strengthening of borehole walls in unconsolidated and unstable rocks. Well cementing process is divided into five subsequent operations. Firstly, grouting mixture is prepared in concrete mixers (cementing units) with necessary water-to-cement ratio and additives. Secondly, prepared grouting solution is injected in a well. Thirdly, the solution is squeezed into the space between the casing pipes and wellbore walls. Then it is necessary to wait until the cement sheath is hardened. And at last, quality control is carried out. For convenient transportation, the equipment for well cementing is installed on the truck chassis (KAMAZ, URAL and etc.). All components are poured in concrete mixer, then the water is added and everything is being mixed until formation of uniform mass, which is later pumped in a well. Oil and Gas Industry Safety Regulations say that «calculated endurance of casing string cementing should not exceed 75% of time of cement thickening, established by laboratory tests». Therefore, it is necessary to carry out all operations of injection of fluids into the well as soon as possible without any incompliances of the cementing technology. With cementing material used and its water-to-cement ratio of 0.5, the average time of cement thickening is 120 minutes, according to laboratory tests. Therefore, a set of operations of injection of fluids should not exceed 90 minutes.

Keywords

  • cementing of casing string
  • isolation of water-bearing horizon
  • cement slurry injection
  • squeezing
Open Access

Quality Policy With Regard to the Orientation Towards Improvement Among Industrial Enterprises with Various Types of Organizational Culture

Published Online: 01 Sep 2021
Page range: 479 - 488

Abstract

Abstract

The article is one of a series of articles (Molenda, 2020) in which the results of studies on the assessment of the quality policy in industrial enterprises operating in Poland have been described. When carrying out the surveys in the years 2015-2019, in addition to the quality policy, the type of organizational culture of enterprises was identified, among other things. This allowed to divide enterprises into 4 groups, depending on the dominant type of organizational culture identified according to the Cameron-Quinn methodology (Cameron K., Quinn R. 2003). This study compares the quality policies of these enterprises in terms of their orientation towards improvement characteristic of the TQM philosophy. The first part of the article describes the issue of the quality policy in the context of organizational culture. The body of the article contains the results of studies conducted among 166 enterprises. A preliminary statistical analysis of the results allowed to answer the question of what is the level of orientation of the implemented quality policy towards improvement and whether this level varies depending on the organizational culture.

Keywords

  • quality
  • quality policy
  • quality culture
  • QMS
  • TQM
Open Access

PN-ISO 37120 Standard – Known or Unknown by Local Administration – Preliminary Study

Published Online: 01 Sep 2021
Page range: 489 - 498

Abstract

Abstract

Silesian cities are facing economic changes related, among others, to low-carbon transformation. The PN-ISO 37120 standard, which requires the analysis of a number of indicators that determine the directions of city development in particular areas of its functioning, may become a tool supporting city authorities in those activities. Having the above in mind, the authors of the article attempted to find an answer to the question whether the local administration employees of selected Silesian cities have knowledge of the PN-ISO 37120:2015 standard today, as it is an interesting tool for the implementation of the requirements for modern cities. Therefore, the knowledge of the content of the standard by the local government personnel seems to be necessary in order to decide whether this standard is an appropriate tool for the development of a particular city/municipality or not. The study was a pilot project and it involved two cities located in the Silesian agglomeration.

Keywords

  • ISO 37120 standard
  • Smart City
  • local administration
  • management
Open Access

Chatbot as a Tool for Knowledge Sharing in the Maintenance and Repair Processes

Published Online: 09 Oct 2021
Page range: 499 - 508

Abstract

Abstract

In the era of digitization and general access to Internet resources, it seems natural to expect fast, direct, and tailored access to the knowledge of interest. The research shows that the use of modern technologies is not reserved only for industrial solutions, but can be applied in common use. Solutions based on artificial intelligence can provide solutions to many problems of the modern world. This is particularly visible in the era of challenges related to ecology (e.g. minimization of paper consumption) and expectations of fast access to information regardless of place and time. Treating chatbots as a tool supporting the customer in current activities, quick problem-solving shows the potential and care for the image of the producers. Developing the functionality of virtual assistants used for marketing activities with the functionality of technical support can bring tangible benefits both in the economic and social spheres. It should be noted that electronic versions of documents, knowledge transferred in an interactive form can be easily updated and presented in different forms. This increases the attractiveness of transmitted knowledge, users can choose the appropriate form, and access to these resources becomes easier. Artificial intelligence-based tools in the form of chatbots (also called virtual assistants) seem to be a solution worthy of interest. This paper presents the process of developing a virtual assistant to support the maintenance and repair activities of small household appliances. A chatbot aims at gathering in one place and then providing dedicated knowledge resources to an individual user on a just-in-time basis.

Keywords

  • knowledge sharing
  • maintenance
  • chatbot
  • AI
  • virtual assistant
Open Access

Private and Public Sector Employer Actions for Home Office Workers During the COVID-19 Epidemic

Published Online: 09 Oct 2021
Page range: 509 - 519

Abstract

Abstract

A research was conducted among the employees referred to work in the home office in connection with the announced state of the epidemic in Poland. The research was conducted using a questionnaire method, the study was attended by 199 respondents. The research is burdened with an error in the selection of statistical sample units, which resulted from the respondents’ involvement and their truthfulness. The aim of the article is to assess the activities of employers from the private and state sectors in Poland, related to the delegation of employees to work in the home office, and to analyze the skills and possibilities of self-organization of work by employees. An important result of the survey was to demonstrate the differences in the behavior of public and private sector employers. The study shows that the private sector has adapted better to sudden changes than the state sector.

Keywords

  • home office
  • epidemic
  • COVID-19
  • activities of employers
  • work flexibility
  • job satisfaction
  • work efficiency
Open Access

The Way of Improvement of Quality of Life of Older Persons as Users and Maintainers of Technical Means

Published Online: 09 Oct 2021
Page range: 520 - 528

Abstract

Abstract

In the article the way of improvement quality of life as users and maintainers of technical means is presented. It is assumed that it is necessary to keep the fundamental of sustainable development. Therefore the application of the scheme of the process of satisfying needs is shown. It helps establish the activities necessary to achieve this goal and enables to plan required information resources. In the range of exploitation and design tasks the application of original strategy of exploitation by older persons was proposed. This strategy uses 6R method which in the future will be supplemented on elements commonly executed strategies and policies of exploitation. Decision making in accordance with proposed strategy will be possible by performing calculations and simulation with the use of multidisciplinary model, whose conception was indicated in the article and which uses matrix of assessment of the quality of life.

Keywords

  • quality of life
  • older persons
  • human engineering
  • exploitation of technical means
  • psychology

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