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Volume 52 (2022): Issue 3 (September 2022)

Volume 52 (2022): Issue 2 (June 2022)

Volume 52 (2022): Issue 1 (March 2022)

Volume 51 (2021): Issue 4 (December 2021)

Volume 51 (2021): Issue 3 (October 2021)

Volume 51 (2021): Issue 2 (June 2021)

Volume 51 (2021): Issue 1 (March 2021)

Volume 50 (2020): Issue 4 (December 2020)

Volume 50 (2020): Issue 3 (October 2020)

Volume 50 (2020): Issue 2 (June 2020)

Volume 50 (2020): Issue 1 (March 2020)

Volume 49 (2019): Issue 4 (December 2019)

Volume 49 (2019): Issue 3 (October 2019)

Volume 49 (2019): Issue 2 (June 2019)

Volume 49 (2019): Issue 1 (March 2019)

Volume 48 (2018): Issue 1 (December 2018)

Volume 47 (2018): Issue 1 (December 2018)

Volume 46 (2018): Issue 1 (June 2018)

Volume 45 (2018): Issue 1 (March 2018)

Volume 44 (2017): Issue 1 (December 2017)

Volume 43 (2017): Issue 1 (October 2017)

Volume 42 (2017): Issue 1 (June 2017)

Volume 41 (2017): Issue 1 (March 2017)

Volume 40 (2016): Issue 1 (December 2016)

Volume 39 (2016): Issue 1 (October 2016)

Volume 38 (2016): Issue 1 (October 2016)

Volume 37 (2016): Issue 1 (July 2016)

Volume 36 (2015): Issue 1 (December 2015)

Volume 35 (2015): Issue 1 (November 2015)

Volume 34 (2015): Issue 1 (September 2015)

Volume 33 (2015): Issue 1 (September 2015)

Volume 32 (2014): Issue 1 (December 2014)

Volume 31 (2014): Issue 1 (September 2014)

Volume 30 (2014): Issue 1 (June 2014)

Volume 29 (2014): Issue 1 (March 2014)

Volume 27 (2014): Issue 1 (February 2014)

Volume 26 (2013): Issue 1 (June 2013)

Volume 25 (2013): Issue 1 (March 2013)

Volume 24 (2012): Issue 1 (December 2012)

Volume 23 (2012): Issue 1 (September 2012)

Volume 22 (2012): Issue 1 (June 2012)

Volume 21 (2012): Issue 1 (March 2012)

Volume 20 (2012): Issue 1 (January 2012)

Volume 14-15 (2010): Issue 2010 (December 2010)

Volume 13 (2010): Issue 1 (January 2010)

Volume 11-12 (2009): Issue 1 (December 2009)

Volume 9-10 (2009): Issue 1 (January 2009)

Volume 8 (2008): Issue 1 (December 2008)

Volume 7 (2008): Issue 4 (December 2008)

Volume 6 (2008): Issue 3 (September 2008)

Volume 5 (2008): Issue 2 (June 2008)

Volume 4 (2008): Issue 1 (March 2008)

Volume 3 (2007): Issue 2007 (January 2007)

Journal Details
Format
Journal
eISSN
2083-4608
First Published
26 Feb 2008
Publication timeframe
4 times per year
Languages
English

Search

Volume 51 (2021): Issue 3 (October 2021)

Journal Details
Format
Journal
eISSN
2083-4608
First Published
26 Feb 2008
Publication timeframe
4 times per year
Languages
English

Search

10 Articles
Open Access

Liability of an Air Carrier for Personal Damage

Published Online: 30 Oct 2021
Page range: 1 - 18

Abstract

Abstract

The aim of the study is to present the principles of civil liability for damage caused to a passenger for which an air carrier is responsible, regulated by the Warsaw and Montreal Conventions, and the norms of national law providing issues that are not included in international law acts. The paper presents a historical overview of the applicable Conventions. The provisions of the Polish Civil Code that are useful for interpretation of law institutions and complement the legal norms contained in the Conventions are also presented. The compiled issues put the legal norms contained in various law systems in order by indicating the practical dimension of the pursuit of potential claims by passengers vis-à-vis air carriers. This is followed by a discussion of the grounds for excluding third party liability of an air carrier in case of excessive or illegitimate claims of the carrier’s clients, and of the insurer.

Keywords

  • Warsaw and Montreal Conventions
  • personal damage
  • forms of remedy
  • obligations of an air carrier
Open Access

Integration of Image-Based Fog Detection with Autonomous Decision System for Intelligent Road Sign

Published Online: 30 Oct 2021
Page range: 19 - 36

Abstract

Abstract

The paper presents the description of the decision system implemented for Intelligent Road Signs. It focuses on the implementation of the novel air transparency analysis system and its integration with the rule system and the speed control infrastructure. Moreover, there are presented issues of making decisions about the content displayed in the case of autonomous and cooperating signs. To reflect more closely on real-life situations, it is assumed that the content presented by the IRS changes dynamically, depending on the road traffic and weather parameters. The IRS system operation was presented using fog detection as an example.

Keywords

  • rule system
  • intelligent road sign
  • inference engine
  • air transparency analysis
  • highways surveillance system
  • speed control
  • fog detection algorithm
Open Access

Legal Aspects Regarding Liability for Shooting Down an Aircraft

Published Online: 30 Oct 2021
Page range: 37 - 48

Abstract

Abstract

The author will raise the issue of responsibility for shooting down a civil aircraft. The powers of the state, as well as the responsibilities and obligations that are imposed on the state in this matter will be presented. The paper will also define the notion of sovereignty. Then, international documents which govern the responsibility of the state will be discussed. The author will also indicate the origin of the introduction of regulations on the shooting down of aircraft. The author will also provide examples of such incidents involving civil aircraft. In addition, the paper will include the position of the Constitutional Tribunal regarding the matter of shooting down an aircraft. The work will conclude with considerations regarding the legitimacy and reasons for shooting down aircraft. Can we sacrifice one “good” in the name of another?

Keywords

  • civil aircraft
  • state responsibility
  • aircraft
  • shooting down
  • the United Nations
Open Access

The System Dynamic and Compram Methodologies for Modelling, Simulation and Forecasting of Road Safety of Uzbekistan

Published Online: 30 Oct 2021
Page range: 49 - 63

Abstract

Abstract

In Uzbekistan, about 2,000 people die every year as a result of a traffic accident. At the same time, according to the Pulitzer Centre on Crisis Reporting, the Republic has the lowest rate in road mortality among the countries in the Central Asian region - for every 100,000 people, it is 11.32 people. Losses from road accidents in Uzbekistan equivalent up to 2.8% of GDP that is also one of the lowest indicators. But according to traffic safety experts, the losses from accidents are greater than reported data. Nowadays there are a lot of methods to analyse and ensure road safety and traffic management on the roads. The authors believe that road safety is a complex societal problem not only in Uzbekistan but all over the world. One of these methods is System Dynamic (SD) and COMplex PRoblem hAndling Methodology (COMPRAM). In this work, the Vensim PLE SD software tool (it is one SD tool amongst many others) has been used to perform the SD modelling of the case study at hand. In the methods of system dynamics, a computer model is created using a graphical technique for constructing flow diagrams and causal relationships of the system under study and then simulated on a computer. COMPRAM allows us to figure out the way to handle complex societal problems while involving a System Dynamics (SD) simulation option. There are similarities between COMPRAM and the traditional way of analysing road safety. In traditional ways, each element or factor is studied as a separate phenomenon. These indicators are studied in the stages of COMPRAM. This article has been studied a different aspect of how road accidents happen. The developed a comparison (according to six criteria) of the different modelling paradigms which have been historically used to assess road safety. Also, the authors made a comparison of the COMPRAM methodology with the traditional road safety assessment approach to highlight similarities and differences.

Keywords

  • Uzbekistan
  • system dynamic
  • COMPRAM
  • road safety
Open Access

The Operational Technique of Increasing Service Life Time of the Major Components of the Fighter Aircraft Engine Rotors

Published Online: 30 Oct 2021
Page range: 65 - 73

Abstract

Abstract

The operational technique for the major components of the fighter aircraft engine rotors has been introduced basing on the real conditions of their cyclic loading in each flight or ground test and a priori information on their previous operation. It has been confirmed that the obtained technical solutions not only conform to the current methods of accounting for the depletion of the life cycle of the Afterburning Turbofan Engine (ATE) but also introduce additional opportunities to consider individual characteristics and conditions of their cyclic loading throughout the overall operating time. A method for estimating the depletion of the life cycle in accordance with the Total Accumulated Cycle (TAC) has been proposed. It allows us to compare the actual operating time of the ATE in hours and the accumulated value of cyclic damage to the engine and its major components (within the TAC parameter) during the previous operation.

Keywords

  • Afterburning Turbofan Engine
  • major components
  • cycle damage
  • Total Accumulated Cycle
  • technique
  • assigned service life
Open Access

The Risk Related to the Influence of Sleep Deprivation on the Reliability of Human on the Example of Pilot

Published Online: 30 Oct 2021
Page range: 75 - 86

Abstract

Abstract

The purpose of this publication is to discuss the issues related to the operator sleep deficiency, its effects and the resulting risk. The issue is discussed on the example of a pilot, as a position in which the probability of occurrence of the phenomenon is high, with consequences of its occurrence that can be very severe. Despite the fact, the authors try to present the issues in a universal way enabling reference to a wide spectrum of different types of operators. In the article, concepts such as risk and fatigue are characterized. Furthermore, short and long-term fatigue are discussed, as well as the impact of shift work on human health and reliability. The second part presents methods of fatigue monitoring useful in aviation. The summary emphasizes the need for a holistic approach to the issue of crew fatigue in the management and the need for actions before commencing with work.

Keywords

  • human factor
  • risk
  • sleep deprivation
  • fatigue
  • safety of flights
Open Access

Comprehensive Study of the Microclimate Parameters in the Residential Building

Published Online: 30 Oct 2021
Page range: 87 - 96

Abstract

Abstract

The relevance of the research lies in the development of the current question about the influence of microclimate quality on the efficiency of residential units. The aim of the study is to examine how the microclimate parameters affect the efficiency of residential buildings. Findings. The results obtained are essential for the design of energy-efficient and comfortable residential buildings. The scientific novelty and practical importance of research resides in the thorough study of microclimate in low-rise residential buildings. Microclimate deviation charts for residential buildings have been produced.

Keywords

  • energy audit
  • heat-insulating cladding
  • heat insulation
  • energy efficiency
  • microclimate parameters
  • residential unit
  • complex thermal modernization
Open Access

Preliminary Risk Analysis of Low Pressure Railway Transport

Published Online: 30 Oct 2021
Page range: 97 - 122

Abstract

Abstract

The subject of this study is a preliminary risk analysis during travel by the low pressure railway Hyperloop. The main objective was to formulate recommendations related to the development of the project of the new transport mode. The main analysis was preceded by the identification of Man – Machine - Environment system. Undesirable events were identified for each of the specified steps of a ride. For each event, a risk assessment was performed using Risk Score based method. The causes, effects and preventive actions were also listed. Events with the highest risk score were indicated. The need to develop procedures for safety checks and emergency situations was pointed out. It was shown that the safety analysis of the transport system should be extended after a final project development of the railway system and the necessary infrastructure.

Keywords

  • transport
  • safety
  • low pressure railway
  • Hyperloop
  • risk analysis
  • Risk Score method
Open Access

Genetic Programming Based Identification of an Overhead Crane

Published Online: 30 Oct 2021
Page range: 123 - 133

Abstract

Abstract

Overhead cranes carry out an important function in the transportation of loads in industry. The ability to transport a payload quickly and accurately without excessive oscillations could reduce the chance of accidents as well as increase productivity. Accurate modelling of the crane system dynamics reduces the plant-model mismatch which could improve the performance of model-based controllers. In this work the simulation model to be identified is developed using the Euler-Lagrange method with friction. A 5-step ahead predictor, as well as a 10-step ahead predictor, are obtained using multi-gene genetic programming (MGGP) using input-output data. The weights of the genes are obtained by using least squares. The results of 15 different genetic programming runs are plotted on a complexity-mean square error graph with the Pareto optimal solutions shown.

Keywords

  • genetic programming
  • crane
  • nonlinear model
  • identification
Open Access

Analysis of the possibility of using a geogrid to improve load bearing capacity of natural airfield pavements

Published Online: 30 Oct 2021
Page range: 135 - 148

Abstract

Abstract

The article presents an innovative method that was verified in the field. It is aimed to improve the load bearing capacity of airfield pavements, which are one of the elements of the flight safety system. Airfield pavements protect the runway in case when the aircraft is taxiing beyond the runway. Moreover, they are also used to perform starting and landing operations of military aircraft. Due to this, they need to have an adequate load bearing capacity that ensures the safety of performing aircraft flights. Airports cannot afford to be shut down for a long time; thus, it is essential to look for efficient and fast solutions that could improve the load bearing capacity of airfield pavements. The authors suggested to apply geogrid immersed in natural airfield pavement.

Keywords

  • load bearing capacity
  • California Bearing Ratio (CBR)
  • natural airfield pavement
  • safety of aircraft operations
10 Articles
Open Access

Liability of an Air Carrier for Personal Damage

Published Online: 30 Oct 2021
Page range: 1 - 18

Abstract

Abstract

The aim of the study is to present the principles of civil liability for damage caused to a passenger for which an air carrier is responsible, regulated by the Warsaw and Montreal Conventions, and the norms of national law providing issues that are not included in international law acts. The paper presents a historical overview of the applicable Conventions. The provisions of the Polish Civil Code that are useful for interpretation of law institutions and complement the legal norms contained in the Conventions are also presented. The compiled issues put the legal norms contained in various law systems in order by indicating the practical dimension of the pursuit of potential claims by passengers vis-à-vis air carriers. This is followed by a discussion of the grounds for excluding third party liability of an air carrier in case of excessive or illegitimate claims of the carrier’s clients, and of the insurer.

Keywords

  • Warsaw and Montreal Conventions
  • personal damage
  • forms of remedy
  • obligations of an air carrier
Open Access

Integration of Image-Based Fog Detection with Autonomous Decision System for Intelligent Road Sign

Published Online: 30 Oct 2021
Page range: 19 - 36

Abstract

Abstract

The paper presents the description of the decision system implemented for Intelligent Road Signs. It focuses on the implementation of the novel air transparency analysis system and its integration with the rule system and the speed control infrastructure. Moreover, there are presented issues of making decisions about the content displayed in the case of autonomous and cooperating signs. To reflect more closely on real-life situations, it is assumed that the content presented by the IRS changes dynamically, depending on the road traffic and weather parameters. The IRS system operation was presented using fog detection as an example.

Keywords

  • rule system
  • intelligent road sign
  • inference engine
  • air transparency analysis
  • highways surveillance system
  • speed control
  • fog detection algorithm
Open Access

Legal Aspects Regarding Liability for Shooting Down an Aircraft

Published Online: 30 Oct 2021
Page range: 37 - 48

Abstract

Abstract

The author will raise the issue of responsibility for shooting down a civil aircraft. The powers of the state, as well as the responsibilities and obligations that are imposed on the state in this matter will be presented. The paper will also define the notion of sovereignty. Then, international documents which govern the responsibility of the state will be discussed. The author will also indicate the origin of the introduction of regulations on the shooting down of aircraft. The author will also provide examples of such incidents involving civil aircraft. In addition, the paper will include the position of the Constitutional Tribunal regarding the matter of shooting down an aircraft. The work will conclude with considerations regarding the legitimacy and reasons for shooting down aircraft. Can we sacrifice one “good” in the name of another?

Keywords

  • civil aircraft
  • state responsibility
  • aircraft
  • shooting down
  • the United Nations
Open Access

The System Dynamic and Compram Methodologies for Modelling, Simulation and Forecasting of Road Safety of Uzbekistan

Published Online: 30 Oct 2021
Page range: 49 - 63

Abstract

Abstract

In Uzbekistan, about 2,000 people die every year as a result of a traffic accident. At the same time, according to the Pulitzer Centre on Crisis Reporting, the Republic has the lowest rate in road mortality among the countries in the Central Asian region - for every 100,000 people, it is 11.32 people. Losses from road accidents in Uzbekistan equivalent up to 2.8% of GDP that is also one of the lowest indicators. But according to traffic safety experts, the losses from accidents are greater than reported data. Nowadays there are a lot of methods to analyse and ensure road safety and traffic management on the roads. The authors believe that road safety is a complex societal problem not only in Uzbekistan but all over the world. One of these methods is System Dynamic (SD) and COMplex PRoblem hAndling Methodology (COMPRAM). In this work, the Vensim PLE SD software tool (it is one SD tool amongst many others) has been used to perform the SD modelling of the case study at hand. In the methods of system dynamics, a computer model is created using a graphical technique for constructing flow diagrams and causal relationships of the system under study and then simulated on a computer. COMPRAM allows us to figure out the way to handle complex societal problems while involving a System Dynamics (SD) simulation option. There are similarities between COMPRAM and the traditional way of analysing road safety. In traditional ways, each element or factor is studied as a separate phenomenon. These indicators are studied in the stages of COMPRAM. This article has been studied a different aspect of how road accidents happen. The developed a comparison (according to six criteria) of the different modelling paradigms which have been historically used to assess road safety. Also, the authors made a comparison of the COMPRAM methodology with the traditional road safety assessment approach to highlight similarities and differences.

Keywords

  • Uzbekistan
  • system dynamic
  • COMPRAM
  • road safety
Open Access

The Operational Technique of Increasing Service Life Time of the Major Components of the Fighter Aircraft Engine Rotors

Published Online: 30 Oct 2021
Page range: 65 - 73

Abstract

Abstract

The operational technique for the major components of the fighter aircraft engine rotors has been introduced basing on the real conditions of their cyclic loading in each flight or ground test and a priori information on their previous operation. It has been confirmed that the obtained technical solutions not only conform to the current methods of accounting for the depletion of the life cycle of the Afterburning Turbofan Engine (ATE) but also introduce additional opportunities to consider individual characteristics and conditions of their cyclic loading throughout the overall operating time. A method for estimating the depletion of the life cycle in accordance with the Total Accumulated Cycle (TAC) has been proposed. It allows us to compare the actual operating time of the ATE in hours and the accumulated value of cyclic damage to the engine and its major components (within the TAC parameter) during the previous operation.

Keywords

  • Afterburning Turbofan Engine
  • major components
  • cycle damage
  • Total Accumulated Cycle
  • technique
  • assigned service life
Open Access

The Risk Related to the Influence of Sleep Deprivation on the Reliability of Human on the Example of Pilot

Published Online: 30 Oct 2021
Page range: 75 - 86

Abstract

Abstract

The purpose of this publication is to discuss the issues related to the operator sleep deficiency, its effects and the resulting risk. The issue is discussed on the example of a pilot, as a position in which the probability of occurrence of the phenomenon is high, with consequences of its occurrence that can be very severe. Despite the fact, the authors try to present the issues in a universal way enabling reference to a wide spectrum of different types of operators. In the article, concepts such as risk and fatigue are characterized. Furthermore, short and long-term fatigue are discussed, as well as the impact of shift work on human health and reliability. The second part presents methods of fatigue monitoring useful in aviation. The summary emphasizes the need for a holistic approach to the issue of crew fatigue in the management and the need for actions before commencing with work.

Keywords

  • human factor
  • risk
  • sleep deprivation
  • fatigue
  • safety of flights
Open Access

Comprehensive Study of the Microclimate Parameters in the Residential Building

Published Online: 30 Oct 2021
Page range: 87 - 96

Abstract

Abstract

The relevance of the research lies in the development of the current question about the influence of microclimate quality on the efficiency of residential units. The aim of the study is to examine how the microclimate parameters affect the efficiency of residential buildings. Findings. The results obtained are essential for the design of energy-efficient and comfortable residential buildings. The scientific novelty and practical importance of research resides in the thorough study of microclimate in low-rise residential buildings. Microclimate deviation charts for residential buildings have been produced.

Keywords

  • energy audit
  • heat-insulating cladding
  • heat insulation
  • energy efficiency
  • microclimate parameters
  • residential unit
  • complex thermal modernization
Open Access

Preliminary Risk Analysis of Low Pressure Railway Transport

Published Online: 30 Oct 2021
Page range: 97 - 122

Abstract

Abstract

The subject of this study is a preliminary risk analysis during travel by the low pressure railway Hyperloop. The main objective was to formulate recommendations related to the development of the project of the new transport mode. The main analysis was preceded by the identification of Man – Machine - Environment system. Undesirable events were identified for each of the specified steps of a ride. For each event, a risk assessment was performed using Risk Score based method. The causes, effects and preventive actions were also listed. Events with the highest risk score were indicated. The need to develop procedures for safety checks and emergency situations was pointed out. It was shown that the safety analysis of the transport system should be extended after a final project development of the railway system and the necessary infrastructure.

Keywords

  • transport
  • safety
  • low pressure railway
  • Hyperloop
  • risk analysis
  • Risk Score method
Open Access

Genetic Programming Based Identification of an Overhead Crane

Published Online: 30 Oct 2021
Page range: 123 - 133

Abstract

Abstract

Overhead cranes carry out an important function in the transportation of loads in industry. The ability to transport a payload quickly and accurately without excessive oscillations could reduce the chance of accidents as well as increase productivity. Accurate modelling of the crane system dynamics reduces the plant-model mismatch which could improve the performance of model-based controllers. In this work the simulation model to be identified is developed using the Euler-Lagrange method with friction. A 5-step ahead predictor, as well as a 10-step ahead predictor, are obtained using multi-gene genetic programming (MGGP) using input-output data. The weights of the genes are obtained by using least squares. The results of 15 different genetic programming runs are plotted on a complexity-mean square error graph with the Pareto optimal solutions shown.

Keywords

  • genetic programming
  • crane
  • nonlinear model
  • identification
Open Access

Analysis of the possibility of using a geogrid to improve load bearing capacity of natural airfield pavements

Published Online: 30 Oct 2021
Page range: 135 - 148

Abstract

Abstract

The article presents an innovative method that was verified in the field. It is aimed to improve the load bearing capacity of airfield pavements, which are one of the elements of the flight safety system. Airfield pavements protect the runway in case when the aircraft is taxiing beyond the runway. Moreover, they are also used to perform starting and landing operations of military aircraft. Due to this, they need to have an adequate load bearing capacity that ensures the safety of performing aircraft flights. Airports cannot afford to be shut down for a long time; thus, it is essential to look for efficient and fast solutions that could improve the load bearing capacity of airfield pavements. The authors suggested to apply geogrid immersed in natural airfield pavement.

Keywords

  • load bearing capacity
  • California Bearing Ratio (CBR)
  • natural airfield pavement
  • safety of aircraft operations

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