rss_2.0Journal of KONBiN FeedSciendo RSS Feed for Journal of KONBiNhttps://sciendo.com/journal/JOKhttps://www.sciendo.comJournal of KONBiN 's Coverhttps://sciendo-parsed-data-feed.s3.eu-central-1.amazonaws.com/60f4b375f83c0e1a37b93e3a/cover-image.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20211021T092156Z&X-Amz-SignedHeaders=host&X-Amz-Expires=604800&X-Amz-Credential=AKIA6AP2G7AKDOZOEZ7H%2F20211021%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Signature=e4ccf7239935a3c7418b40ce535b0375ca85090fab6c638e15899682abb3f0a2200300Efficiency Analyse of Airport Commercial Areahttps://sciendo.com/article/10.2478/jok-2021-0024<abstract> <title style='display:none'>Abstract</title> <p>The article is focused on analysis of financial cost effectiveness and the utilization of business premises in the terminal building of Bratislava Airport. Our analysis is based on a comparison of sales, profitability, and number of customers of individual newsagents of the GGT a. s. company, which operates three such newsagent stands at the examined airport. Each of the newsagents are located in a different part of the airport terminal, namely Schengen, non-Schengen and check-in area. The examined shops will serve as a practical example of the usability of these areas, and our goal is to find out which of these parts of the Bratislava Airport terminal building is most used by passengers and airport visitors. The data was collected for the period from 1st January 2018 to 31st December 2018, covering one full calendar year, which is a sufficient period for our analysis.</p> </abstract>ARTICLE2021-07-17T00:00:00.000+00:00Preliminary System Safety Hazard Analysis of a Transport Helicopter SHM Systemhttps://sciendo.com/article/10.2478/jok-2021-0019<abstract> <title style='display:none'>Abstract</title> <p>The purpose of this paper is to provide the Mi-8/17 helicopter Structural Health Monitoring (SHM) System Preliminary System Safety Hazard Analysis (PSSHA). The PSSHA identifies and classifies potential hazards, and the actions necessary to reduce or eliminate the risks resulting from the installation and operation of SHM System on board of the helicopter. The overall objective of the PSSHA is to establish that the potential Mi 8/17 helicopter modification does not introduce unacceptable hazard conditions to both the helicopter and personnel. The MIL-STD-882 risk assessment methodology is applied to assess hazards and risk acceptance levels for both hardware and software elements of the SHM system.</p> </abstract>ARTICLE2021-07-17T00:00:00.000+00:00Federated Learning for Spanish Ports as an Aid to Digitizationhttps://sciendo.com/article/10.2478/jok-2021-0018<abstract> <title style='display:none'>Abstract</title> <p>The Spanish Port System is immersed in the process of digital transformation towards the concept of Ports 4.0. This entails new regulatory and connectivity requirements, making it necessary to implement the new technologies offered by the market towards digitalization. The digitalization of the individual processes in a first step helps the exchange of digital information between the members of the port community. The next step will mean that the information flow between the participants of a port community is done in a reliable, efficient, paperless way, and thanks to technologies. However, for the Spanish port sector, data exchange has a competitive disadvantage. That is why Federated Learning is proposed. This approach allows several organizations in the port sector to collaborate in the development of models, but without the need to directly share sensitive port data among themselves. Instead of gathering data on a single server, the data remains locked on your server, and the algorithms and predictive models travel between them. The goal of this approach is to benefit from a large set of data, which contributes to increased Machine Learning performance while respecting data ownership and privacy. Through an Inter-institution or “Cross-silo FL” model, different institutions contribute to the training with their local datasets in which different companies collaborate in training a learning machine for the discovery of patterns in private datasets of high sensitivity and high content. This environment is characterized by a smaller number of participants than the mobile case, with typically better bandwidth and less intermittency.</p> </abstract>ARTICLE2021-07-17T00:00:00.000+00:00Measures Taken by the European Union Agency for Aviation Safety to Ensure Aviation Safetyhttps://sciendo.com/article/10.2478/jok-2021-0026<abstract> <title style='display:none'>Abstract</title> <p>The author will discuss the subject of aviation safety. The measures taken by EASA to maintain the high standard of aviation safety will be identified. At the same time, the paper will present the genesis of the establishment of the European Union Agency for Aviation Safety.</p> </abstract>ARTICLE2021-07-17T00:00:00.000+00:00Checking Aircraft Engines Adjustmenthttps://sciendo.com/article/10.2478/jok-2021-0029<abstract> <title style='display:none'>Abstract</title> <p>The paper presents a new approach to the process of regulating the basic parameters of a turbine jet engine. It presents a system for monitoring these parameters developed and put into operation and the creation of the so-called phase mapping of the engine speed increment. Its modular structure is described, which allows it to be adapted quite quickly to other types of aircraft engine units. Individual modules are based on mathematical descriptions from the theory of aircraft engines. The phase mapping of the engine speed indicates a dynamic change of this parameter. On this basis, the characteristic ranges and individual points of engine operation are presented. The following are examples of characteristics and their interpretation.</p> </abstract>ARTICLE2021-07-17T00:00:00.000+00:00Diagnostics of Turbine Blades, Based on Estimation of Frequency Response Functionhttps://sciendo.com/article/10.2478/jok-2021-0022<abstract> <title style='display:none'>Abstract</title> <p>The aim of the study is to propose a diagnostics method based on blade’s vibration model in frequency domain. Amplitude spectrum A(ω) and phase spectrum φ(ω) have been experimentally identified which define transfer function G(jω) = P(ω) + jQ(ω) and their real P(ω) and imaginary Q(ω) parts. Transfer function G(jω) and resulting frequency, amplitude, phase characteristics and real P(ω) and imaginary Q(ω) parts are parts of blade’s diagnostics model. Changes in those characteristics are directly related to changes in the technical condition of the blades. It has been noticed that small changes in the technical condition cause large changes in frequency characteristics, which proves their usefulness in the diagnosis process.</p> </abstract>ARTICLE2021-07-17T00:00:00.000+00:00Small UAV SHM System Functional Hazard Analysishttps://sciendo.com/article/10.2478/jok-2021-0020<abstract> <title style='display:none'>Abstract</title> <p>The safety assessment process tailored to Remotely Piloted Aircraft Systems (RPAS) applications has been discussed briefly. The modified Hazard Reference System for STANAG 4703 Category UAV including Non Safety Effect (NSE) severity category has been proposed. The Functional Hazard Analysis (FHA) for small Unmanned Aerial Vehicle (UAV) Structural Health Monitoring (SHM) system has been conducted.</p> </abstract>ARTICLE2021-07-17T00:00:00.000+00:00Aviation Criminal Law Regulations of the Tokyo Convention and the Penal Code to Counteract Terrorist Actshttps://sciendo.com/article/10.2478/jok-2021-0021<abstract> <title style='display:none'>Abstract</title> <p>The aim of the study is to present issues related to acts of terror and attempts to counteract them, whose subject matter of which is governed by a number of legal acts of various territorial scope, primarily by regulations contained in the Tokyo Convention, which is a source of public international law, and Polish normative acts, such as the Aviation Law together with legal and penal regulations. The paper presents considerations aimed at indicating the proper interpretation of the provisions regulating the obligation to undertake investigative and explanatory actions as part of pre-trial proceedings conducted by the prosecutor, the issues of jurisdiction and competence of the courts adjudicating in criminal cases, and the issues concerning the institution of extradition and its legal basis.</p> </abstract>ARTICLE2021-07-17T00:00:00.000+00:00The Impact of Standard Deviation of Wind on the Bomb Flight in Atmospheric Turbulencehttps://sciendo.com/article/10.2478/jok-2021-0023<abstract> <title style='display:none'>Abstract</title> <p>The paper provides the simulation results of a small-diameter guided training bomb released during atmospheric turbulence. The simulation utilized a guided bombed devised at ITWL. Aerodynamic characteristics of the bomb were obtained from wind tunnel tests and from calculations made by the PRODAS programme. The simulation programme was developed based on a mathematical model describing a spatial motion of an aerial bomb moving in atmospheric turbulence. To describe a turbulence component, the model of stochastic processes proposed by Shinozuki was used. The manuscript includes examples of diagrams of basic parameters showing the bomb flight in a disturbed atmosphere. The analysis of the impact of the standard deviation of the wind on the change in the parameters of bomb flight was performed. The relationships between the parameters of bomb flight and the possibility to hit the target were provided.</p> </abstract>ARTICLE2021-07-17T00:00:00.000+00:00The Impact of Technological Changes of PVC Light Partitions and Glazing on the Risk Connected with the Organization of International Transporthttps://sciendo.com/article/10.2478/jok-2021-0028<abstract> <title style='display:none'>Abstract</title> <p>The Author of the article proves that in practice the suitable result concerning the balanced development and the effective use of resources should be controlled simultaneously. The setting of the parameters of thermal isolation for constructional products such as light partitions and glazing (windows and doors) with respect to technological development of products is not enough. Production, the product and its transport makes the whole arrangement of processes that influence the entirety resulting from ecology, transport and the effective use of resources. The only way to meet the demands of the strategy described in the EU documents is to implement such product design that assumes for example the optimal transport possibilities.</p> </abstract>ARTICLE2021-07-17T00:00:00.000+00:00Use of Electric Motors in the Context of Glider Aviationhttps://sciendo.com/article/10.2478/jok-2021-0025<abstract> <title style='display:none'>Abstract</title> <p>In sailplane aviation, I attach great importance to the achieved aerodynamic parameters due to the main idea of sailplane flights, which is the flight of a sailplane without external energy supply for staying in the air and only in favourable weather conditions, e.g. increasing thermal movements of the air. Only during take-off, external devices, such as a winch or a towing plane, can be used. Therefore, the use of a propulsion installed in sailplanes and operating only during take-off is a very convenient solution. This is a step towards facilitating the access to flying for a wider group of people due to the reduction of costs related to the take-off processes, and also increases the level of safety of sailplane flights by enabling the use of propulsion at critical moments of the flight. The study presents the current trends in the development of gliding, in particular motor gliders. Additionally, as a result of research works, the energy storage system was shown, which is the weakest element of the system, and at the same time the one with the greatest development potential.</p> </abstract>ARTICLE2021-07-17T00:00:00.000+00:00Reaction Wheel Control System for Cubesat Nanosatellitehttps://sciendo.com/article/10.2478/jok-2021-0027<abstract> <title style='display:none'>Abstract</title> <p>Nanosatellites, although originally developed for educational purposes, are increasingly being used for commercial sense. Continuous increase in the application and use means that they require continuous improvement of performance to cope with new challenges. An important issue is the control of the position of the satellite sufficiently accurate and fast to enable it to efficiently carry out its mission. This paper includes a project consisting of a modelled test system and a presented method of control with simulation. Then, the obtained results and resulting conclusions are discussed.</p> </abstract>ARTICLE2021-07-17T00:00:00.000+00:00Evidential Networks for Evaluating Predictive Reliability of Mechatronics Systems under Epistemic Uncertaintieshttps://sciendo.com/article/10.2478/jok-2019-0045<abstract> <title style='display:none'>Abstract</title> <p>In reliability predicting field, the probabilistic approaches are based on data relating to the components which can be precisely known and validated by the return of experience REX, but in the case of complex systems with high-reliability precision such as mechatronic systems, uncertainties are inevitable and must be considered in order to predict with a degree of confidence the evaluated reliability. In this paper, firstly we present a brief review of the non-probabilistic approaches. Thereafter we present our methodology for assessing the reliability of the mechatronic system by taking into account the epistemic uncertainties (uncertainties in the reliability model and uncertainties in the reliability parameters) considered as a dynamic hybrid system and characterized by the existence of multi-domain interaction between its failed components. The key point in this study is to use an Evidential Network “EN” based on belief functions and the dynamic Bayesian network. Finally, an application is developed to illustrate the interest of the proposed methodology.</p> </abstract>ARTICLE2019-08-21T00:00:00.000+00:00The Effects of Roadside Hazards on Road Accident Severityhttps://sciendo.com/article/10.2478/jok-2019-0038<abstract> <title style='display:none'>Abstract</title> <p>The risk of becoming involved in an accident emerges when elements of the transport system do not operate properly (man – vehicle – road – roadside). The road, its traffic layout and safety equipment have a critical impact on road user safety. This gives infrastructural work a priority in road safety strategies and programmes. Run-off-road accidents continue to be one of the biggest problems of road safety with consequences including vehicle roll-over or hitting a roadside object. This type of incident represents more than 20% of rural accidents and about 18% of all road deaths in Poland. Mathematical models must be developed to determine how selected roadside factors affect road safety and provide a basis for new roadside design rules and guidelines.</p> </abstract>ARTICLE2019-08-21T00:00:00.000+00:00Methodology of Building the Strategy of Maintenance of Rail Vehicles with the Use of the Rams Analysis in the Area of Safetyhttps://sciendo.com/article/10.2478/jok-2019-0033<abstract> <title style='display:none'>Abstract</title> <p>The paper discusses one of the most important stages in the developed methodology for building a strategy of maintenance of railway vehicles, which is the RAMS analysis (Reliability, Availability, Maintainability, Safety) in the area of safety. The paper presents the application of RAMS analysis in the construction process (development or change) of the maintenance strategy on the example of a 6Dg diesel locomotive. Based on the conducted research, it was found that this analysis enables proper classification of hazards, quantification of the frequency of occurrence of hazards and the adoption of the appropriate criteria for risk assessment of the created strategy.</p> </abstract>ARTICLE2019-08-21T00:00:00.000+00:00Technical Aspect Concerning Vessels Halt Safety Upon Terrorist Hazardhttps://sciendo.com/article/10.2478/jok-2019-0030<abstract> <title style='display:none'>Abstract</title> <p>The article presented and analysed the reliability of water barriers as one of the methods of securing naval technical facilities against the terrorist attacks (motorboats with explosive materials) from the sea. Water tests of FOXX barriers were described as a means of protection against such a threat. The reliability of the barrier was modelled and simulated with the use of Finite Element Method (FEM).</p> </abstract>ARTICLE2019-08-21T00:00:00.000+00:00Selected Problems of Liquid Fuels Storage in Armyhttps://sciendo.com/article/10.2478/jok-2019-0035<abstract> <title style='display:none'>Abstract</title> <p>The assessment of the suitability of fuel delivered to fuel bases and forecasting the maximum time of safe storage in specific storage capacities is a key element of an efficiently functioning storage system. Paper presents the results of research of long-term stability of liquid fuels, which, according to the authors, is crucial in the process of refreshing and rotation of fuels stored as tactical reserves of the Armed Forces. In addition, an analysis of the impact of selected factors on the increase in the intensity of ageing mechanisms is presented.</p> </abstract>ARTICLE2019-08-21T00:00:00.000+00:00The Problem of Reliability Allocation in the Subassemblies of Rail Vehicleshttps://sciendo.com/article/10.2478/jok-2019-0032<abstract> <title style='display:none'>Abstract</title> <p>The following paper concerns an application of reliability allocation as a method for achieving the desired level of reliability for a selected subassembly of a type 6Dg diesel locomotive. On the basis of real operational data for the investigated vehicle, a decision model was developed to solve the allocation problem. It was demonstrated that the locomotive’s reliability may be improved by replacing the individual components in the braking and pneumatic system with components of higher reliability or by using additional equivalent parallel components in the reliability-wise configuration.</p> </abstract>ARTICLE2019-08-21T00:00:00.000+00:00Modelling Consequences of Maritime Critical Infrastructure Accidentshttps://sciendo.com/article/10.2478/jok-2019-0046<abstract> <title style='display:none'>Abstract</title> <p>The probabilistic general model of critical infrastructure accident consequences including the superposition of three models of the process of initiating events, the process of environment threats and the process of environment degradation is adopted to the maritime transport critical infrastructure. The general model is applied to this critical infrastructure accident with chemical release consequences identification and prediction. The model also includes the cost analysis of losses associated with these chemical releases. Further, under the assumption of the stress of weather influence on the ship operation condition, critical infrastructure accident losses are examined and the results are compared with the previous ones. Finally, the method of optimization are practically tested to the minimizing these losses and the procedures and the new strategy assuring lower environment losses of the considered critical infrastructure accidents are proposed.</p> </abstract>ARTICLE2019-08-21T00:00:00.000+00:00The Use of Instrumental Methods to Identify Liquid Fuels Applied in the Polish Armed Forceshttps://sciendo.com/article/10.2478/jok-2019-0043<abstract> <title style='display:none'>Abstract</title> <p>The publication topic is to present the research results on the identification methodology of liquid fuels used in the Polish Armed Forces and beyond them. The part related to the use of non-standard instrumental methods to recognise the differences between various types of products was presented. The results of testing the samples of diesel fuels and fuels for aircraft turbine engines both from the civil market and from the stock of the armed forces were described. The usefulness of chromatography, infrared (IR) spectrometry and UV-VIS spectroscopy as instruments being an element of the procedure of the fuel type and origin identification was presented.</p> </abstract>ARTICLE2019-08-21T00:00:00.000+00:00en-us-1