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

Search

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

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

Search

13 Articles
Open Access

Shock a disposable time in electronic security systems / Porażenie a czas dyspozycyjny w elektronicznych systemach bezpieczeństwa

Published Online: 16 Nov 2016
Page range: 5 - 32

Abstract

Abstract

This paper presents a method to determine the time TD disposable electronic security system that struck a pulse surges or lightning. Disposable time is the time from the moment of shock electronic security system until its transition to a state of security failures, assuming the impact of anti. Disruption (shock), which occurs in the frequency band (0-100) kHz, and effects on the ESB can be catastrophic is lightning.

Keywords

  • electromagnetic field
  • disposable time

Słowa kluczowe

  • pole elektromagnetyczne
  • czas dyspozycyjny
Open Access

Influence of flooding boat deck compartment on the training warship stability safety / Wpływ zatopienia pomieszczenia pokładu łodziowego na stateczność okrętu szkolnego

Published Online: 16 Nov 2016
Page range: 33 - 52

Abstract

Abstract

The paper presents computational stability issues with a flooded ship compartment situated on boat deck. As the main criteria for stability of the warship, calculation algorithm of metacentric height and righting levers have been defined, with a free surface effect taken into account. Based on the results of the calculations presented in tabular and graphical forms, suitable conclusions have been drawn up.

Keywords

  • ship stability
  • angle of heel

Słowa kluczowe

  • stateczność okrętu
  • kąt przechyłu
Open Access

Reliability-exploitation analysis of the alarm columns of highway emergency communication system / Analiza niezawodnościowo-eksploatacyjna kolumn alarmowych autostradowego systemu łączności alarmowej

Published Online: 16 Nov 2016
Page range: 53 - 76

Abstract

Abstract

The article presents issues concerning on the alarm columns of highway emergency communication system. The system is presented in general and then the reliability-exploitation analysis was done. This enabled preparing a development graph of the relationship, under which is created a set of Kolmogorov-Chapman equations describing the system. On this basis, it was possible to find the relation for calculating the probabilities of system staying (in symbolic terms) in the functional: states of full ability SPZ, impendency over safety SZB and unreliability of safety SB.

Keywords

  • reliability
  • exploitation
  • highway emergency communication system

Słowa kluczowe

  • niezawodność
  • eksploatacja
  • autostradowy system łączności alarmowej
Open Access

Application of the order statistics to the fault tolerant systems / Zastosowanie statystyk porządkowych do systemów tolerujących uszkodzenia

Published Online: 16 Nov 2016
Page range: 77 - 98

Abstract

Abstract

Various models of ordered random variables having different interpretations have been introduced and studied extensively in the literature. The most popular of these are order statistics obtained by arranging n random variables (rv’s) in non-decreasing order of magnitude. Order statistics appear in many areas of statistical theory and applications including quality control, robustness, outlier detection, and reliability analysis. In this paper we study the construction of the functional and numerical reliability characteristics for the fault tolerant systems with so called “k-out-of-n” threshold reliability structure based on order statistics.

Keywords

  • order statistics
  • “k-out-of-n” threshold structure
  • regularized beta function

Słowa kluczowe

  • statystyki porządkowe
  • struktura progowa „k-z-n“
  • regulowana funkcja beta
Open Access

Analysis and assessment of an information subsystem in an inland container terminal / Analiza i ocena podsystemu informacyjnego w lądowym terminalu kontenerowym

Published Online: 16 Nov 2016
Page range: 99 - 130

Abstract

Abstract

An inland terminal is a complex system whereby properly designed elements allow for their efficient operation, by means of transport such as ship, rail or truck with semi-trailer. An information system is an inherent part of a technical system. Every employee of a company is a user of such a system. The aim of this article is to analyse and assess the information flow at the container terminal. The article consists of three parts: the first one characterizes the notion of information and also presents various approaches to the information system occurring in the literature; the second, describes the information subsystem in the terminal container. For the selected sub-process, the methodology of research at the container terminal is presented together with an analysis and assessment of the results obtained. The summary will present a conclusion from the analysis conducted and from the specification of weaknesses of the discussed information subsystem, and will propose the possibilities for further studies and research related to this subsystem.

Keywords

  • intermodal transport
  • inland terminal
  • information

Słowa kluczowe

  • transport intermodalny
  • terminal lądowy
  • informacja
Open Access

The selected aspects of transport services punctuality measurement rated by the carrier and passengers / Wybrane aspekty pomiaru punktualności przewozów przez przewoźnika i pasażerów

Published Online: 16 Nov 2016
Page range: 131 - 152

Abstract

Abstract

The quality of public transport plays an increasingly important role in overall quality of life assessment in metropolitan areas. The punctuality of departures is classified as one of the primary criteria for passengers, public transport authorities and carriers. The paper presents the problem of measuring the punctuality of services in view of assessing by different participants of the transportation process. The literature references were discussed pointing out the most commonly used measures for punctuality assessment and relevance to travel-time reliability. The analytic tool designed for transport operator was described, which provides detailed analysis based on data registered during the transport services execution. The information support model for the transport system operation process was referred, which utilizes the available archive timetable execution data to provide the optimized routes based on passengers’ query. The importance of reliability assessment was highlighted for the interchanges being performed along the journey.

Keywords

  • public transport
  • punctuality analysis
  • travel-time reliability

Słowa kluczowe

  • transport publiczny
  • pomiar punktualności
  • niezawodność czasu podróży
Open Access

Analysys of reliability and cost of repairs of trucks under long-term lease conditions / Analiza niezawodności i kosztów napraw samochodów ciężarowych w warunkach wynajmu długoterminowego

Published Online: 16 Nov 2016
Page range: 153 - 178

Abstract

Abstract

The article presents the results of the reliability tests of three makes of trucks. They used samples of 30 vehicles of each make. The vehicles were used by transport companies on a rental basis. The analysis omitted defects of the body-work of the vehicles as the component unrelated to a particular make. The first part of the analysis characterized operating process in respect to mileages and operating time. Then the analysis of the reliability of vehicles and their components was conducted taking into account the mileages till the first recorded defect and separately inter-repair periods’ mileages. The analyses presented are part of a larger work, which aims to develop a method for evaluating the operational quality of trucks from the point of view of the owner of the rental vehicles.

Keywords

  • reliability
  • transport
  • truck
  • maintenance cost

Słowa kluczowe

  • niezawodność
  • transport samochodowy
  • samochód ciężarowy
  • koszt utrzymania
Open Access

Validation of simulation model of the filling line failures / Walidacja modelu symulacyjnego uszkodzeń linii napełniania

Published Online: 16 Nov 2016
Page range: 179 - 200

Abstract

Abstract

The main objective of the article is to present the methodology of validating a simulation model of failures of serial production line. In case of the investigated object, the simulation model was tested to find technological solutions which could compensate for the impact of failures on the operation of important objects present on the line before a failures occurs. A possible solution may be to introduce a new buffer or to adjust the size of existing buffers. Validation is one of the most significant stages in the process of constructing simulation models, as it concerns the credibility of the model. The article presents the use of disturbances modeling, especially breakdowns and micro-stoppages, in the simulation model. It also shows the statistical distribution applied in the model and defines the validation measurement instrument as well as evaluation criteria. All these features are the major strengths of the article.

Keywords

  • a simulation model
  • failure
  • validation

Słowa kluczowe

  • model symulacyjny
  • awarie
  • walidacja
Open Access

Dependability issues in designing warehouse facilities and their functional areas / Zagadnienia niezawodności w projektowaniu magazynów i ich obszarów funkcjonalnych magazynów

Published Online: 16 Nov 2016
Page range: 201 - 228

Abstract

Abstract

The dependability of warehouse facility results from dependability and reliability of its functional areas and effects on the reliability of entire supply chain. The elements of dependability of warehouse facilities should be taken into account at the design stage, but this is difficult because of the complexity of these systems and the variability of qualitative and quantitative structure of material flows at the inputs and outputs. Currently used procedures in warehouse designing include the dependability as criteria to assess the solutions in simplistic terms. The paper presents attempts to systematize basic research issues related to the dependability of warehouses as elements of supply chains on one hand, and technical systems on the other. This will allow specifying reliability measures possible to determine in relation to typical parameters of warehouse facility. This will lead to generalization of the model assessing the reliability of the warehousing processes.

Keywords

  • dependability
  • warehouse designing
  • warehousing process

Słowa kluczowe

  • niezawodność
  • projektowanie magazynów
  • proces magazynowy
Open Access

Preliminary analysis of the availability of the medium firefighting vehicles chassis / Wstępna analiza gotowości podwozi średnich samochodów pożarniczych

Published Online: 16 Nov 2016
Page range: 229 - 244

Abstract

Abstract

The paper presents analysis of the availability of medium firefighting and rescue vehicles chassis used by State Fire Brigade in Warsaw. For analysis of availability of vehicles chassis the technical availability factor has been used. Additionally, in the paper time to restore of the vehicles chassis regarding causes of unavailability has been presented. In the tests the data obtained from the Decision Support System (DSS) of Warsaw State Fire Brigade were applied. The research included the period from January 2012 to May 2015. Based on the results, it can be statement that the operating mileage is the crucial factor of operating degradation of firefighting vehicles chassis.

Keywords

  • availability
  • reliability
  • firefighting vehicle

Słowa kluczowe

  • gotowość
  • niezawodność
  • samochód pożarniczy
Open Access

Risk analysis in case of fire on PZL BRYZA using the event tree analysis / Analiza ryzyka w przypadku pożaru samolotu PZL BRYZA z wykorzystaniem metody drzewa zdarzeń

Published Online: 16 Nov 2016
Page range: 245 - 270

Abstract

Abstract

The paper presents application of the Event Tree Analysis method for analyzing risk in complex situations. A model associated with the occurrence of fire on PZL Bryza was developed using the aircraft flight manual. The probabilities of events caused by the initiating event and the losses caused by each of the highlighted final undesirable events were determined. Statistical data for flight safety was used to calculate probability of the initiating event. The risk was determined as the probability that losses of at least given category will occur during one flight. As a result of the conducted analysis it was found that the probability of in-flight fire is very small. However, in such a case, the probability of death of one or more passengers is relatively high.

Keywords

  • risk analysis
  • Event Tree Analysis
  • flight safety

Słowa kluczowe

  • analiza ryzyka
  • metoda drzewa zdarzeń
  • bezpieczeństwo lotów
Open Access

Markov model in logistic management of enterprise / Model Markowa w logistycznym zarządzaniu przedsiębiorstwem

Published Online: 16 Nov 2016
Page range: 271 - 290

Abstract

Abstract

The article presents an analysis of exploitation of vehicles of a transportation company, offering services in international transport. The research referred to two stages of the company operations - before and after introducing some organizational changes. Due to the lack of relation between probability of the future event and all preceding events except the current one, Markov processes have been used in the calculations. A simple, 5-state model, constituted a base for defining main directions of improvements and at the same time, effectively indicated areas of negligence and failures. The conducted research showed many faults in the studied system resulting from excessive trust towards the drivers and allowed to introduce some changes and corrections, which in effect allowed to obtain better results.

Keywords

  • Markov model
  • transport
  • logistics

Słowa kluczowe

  • model Markowa
  • transport
  • logistyka
Open Access

Genetic algorithm method for solving the optimal allocation of response resources problem on the example of polish zone of the Baltic Sea / Metoda algorytmów genetycznych do rozwiązywania problemów optymalnej alokacji środków do zwalczania rozlewów olejowych na przykładzie polskiej strefy Morza Bałtyckiego

Published Online: 16 Nov 2016
Page range: 291 - 310

Abstract

Abstract

The paper presents research related to optimal allocation of response vessels. Research belong to the logistical problem, location-allocation type (LA). Research is focused on vessels belongs to polish Search and Rescue. For the optimal allocation of resources used two-stages method wherein the first stage, using genetic optimization methods and consist in such allocation of response vessels to minimize costs of the spill at sea. In the second stage uses an accurate simulation model of oil spill combat action to verify the solutions obtained by genetic algorithm method.

Keywords

  • oil spill
  • optimization
  • allocation

Słowa kluczowe

  • rozlewy olejowe
  • optymalizacja
  • alokacja
13 Articles
Open Access

Shock a disposable time in electronic security systems / Porażenie a czas dyspozycyjny w elektronicznych systemach bezpieczeństwa

Published Online: 16 Nov 2016
Page range: 5 - 32

Abstract

Abstract

This paper presents a method to determine the time TD disposable electronic security system that struck a pulse surges or lightning. Disposable time is the time from the moment of shock electronic security system until its transition to a state of security failures, assuming the impact of anti. Disruption (shock), which occurs in the frequency band (0-100) kHz, and effects on the ESB can be catastrophic is lightning.

Keywords

  • electromagnetic field
  • disposable time

Słowa kluczowe

  • pole elektromagnetyczne
  • czas dyspozycyjny
Open Access

Influence of flooding boat deck compartment on the training warship stability safety / Wpływ zatopienia pomieszczenia pokładu łodziowego na stateczność okrętu szkolnego

Published Online: 16 Nov 2016
Page range: 33 - 52

Abstract

Abstract

The paper presents computational stability issues with a flooded ship compartment situated on boat deck. As the main criteria for stability of the warship, calculation algorithm of metacentric height and righting levers have been defined, with a free surface effect taken into account. Based on the results of the calculations presented in tabular and graphical forms, suitable conclusions have been drawn up.

Keywords

  • ship stability
  • angle of heel

Słowa kluczowe

  • stateczność okrętu
  • kąt przechyłu
Open Access

Reliability-exploitation analysis of the alarm columns of highway emergency communication system / Analiza niezawodnościowo-eksploatacyjna kolumn alarmowych autostradowego systemu łączności alarmowej

Published Online: 16 Nov 2016
Page range: 53 - 76

Abstract

Abstract

The article presents issues concerning on the alarm columns of highway emergency communication system. The system is presented in general and then the reliability-exploitation analysis was done. This enabled preparing a development graph of the relationship, under which is created a set of Kolmogorov-Chapman equations describing the system. On this basis, it was possible to find the relation for calculating the probabilities of system staying (in symbolic terms) in the functional: states of full ability SPZ, impendency over safety SZB and unreliability of safety SB.

Keywords

  • reliability
  • exploitation
  • highway emergency communication system

Słowa kluczowe

  • niezawodność
  • eksploatacja
  • autostradowy system łączności alarmowej
Open Access

Application of the order statistics to the fault tolerant systems / Zastosowanie statystyk porządkowych do systemów tolerujących uszkodzenia

Published Online: 16 Nov 2016
Page range: 77 - 98

Abstract

Abstract

Various models of ordered random variables having different interpretations have been introduced and studied extensively in the literature. The most popular of these are order statistics obtained by arranging n random variables (rv’s) in non-decreasing order of magnitude. Order statistics appear in many areas of statistical theory and applications including quality control, robustness, outlier detection, and reliability analysis. In this paper we study the construction of the functional and numerical reliability characteristics for the fault tolerant systems with so called “k-out-of-n” threshold reliability structure based on order statistics.

Keywords

  • order statistics
  • “k-out-of-n” threshold structure
  • regularized beta function

Słowa kluczowe

  • statystyki porządkowe
  • struktura progowa „k-z-n“
  • regulowana funkcja beta
Open Access

Analysis and assessment of an information subsystem in an inland container terminal / Analiza i ocena podsystemu informacyjnego w lądowym terminalu kontenerowym

Published Online: 16 Nov 2016
Page range: 99 - 130

Abstract

Abstract

An inland terminal is a complex system whereby properly designed elements allow for their efficient operation, by means of transport such as ship, rail or truck with semi-trailer. An information system is an inherent part of a technical system. Every employee of a company is a user of such a system. The aim of this article is to analyse and assess the information flow at the container terminal. The article consists of three parts: the first one characterizes the notion of information and also presents various approaches to the information system occurring in the literature; the second, describes the information subsystem in the terminal container. For the selected sub-process, the methodology of research at the container terminal is presented together with an analysis and assessment of the results obtained. The summary will present a conclusion from the analysis conducted and from the specification of weaknesses of the discussed information subsystem, and will propose the possibilities for further studies and research related to this subsystem.

Keywords

  • intermodal transport
  • inland terminal
  • information

Słowa kluczowe

  • transport intermodalny
  • terminal lądowy
  • informacja
Open Access

The selected aspects of transport services punctuality measurement rated by the carrier and passengers / Wybrane aspekty pomiaru punktualności przewozów przez przewoźnika i pasażerów

Published Online: 16 Nov 2016
Page range: 131 - 152

Abstract

Abstract

The quality of public transport plays an increasingly important role in overall quality of life assessment in metropolitan areas. The punctuality of departures is classified as one of the primary criteria for passengers, public transport authorities and carriers. The paper presents the problem of measuring the punctuality of services in view of assessing by different participants of the transportation process. The literature references were discussed pointing out the most commonly used measures for punctuality assessment and relevance to travel-time reliability. The analytic tool designed for transport operator was described, which provides detailed analysis based on data registered during the transport services execution. The information support model for the transport system operation process was referred, which utilizes the available archive timetable execution data to provide the optimized routes based on passengers’ query. The importance of reliability assessment was highlighted for the interchanges being performed along the journey.

Keywords

  • public transport
  • punctuality analysis
  • travel-time reliability

Słowa kluczowe

  • transport publiczny
  • pomiar punktualności
  • niezawodność czasu podróży
Open Access

Analysys of reliability and cost of repairs of trucks under long-term lease conditions / Analiza niezawodności i kosztów napraw samochodów ciężarowych w warunkach wynajmu długoterminowego

Published Online: 16 Nov 2016
Page range: 153 - 178

Abstract

Abstract

The article presents the results of the reliability tests of three makes of trucks. They used samples of 30 vehicles of each make. The vehicles were used by transport companies on a rental basis. The analysis omitted defects of the body-work of the vehicles as the component unrelated to a particular make. The first part of the analysis characterized operating process in respect to mileages and operating time. Then the analysis of the reliability of vehicles and their components was conducted taking into account the mileages till the first recorded defect and separately inter-repair periods’ mileages. The analyses presented are part of a larger work, which aims to develop a method for evaluating the operational quality of trucks from the point of view of the owner of the rental vehicles.

Keywords

  • reliability
  • transport
  • truck
  • maintenance cost

Słowa kluczowe

  • niezawodność
  • transport samochodowy
  • samochód ciężarowy
  • koszt utrzymania
Open Access

Validation of simulation model of the filling line failures / Walidacja modelu symulacyjnego uszkodzeń linii napełniania

Published Online: 16 Nov 2016
Page range: 179 - 200

Abstract

Abstract

The main objective of the article is to present the methodology of validating a simulation model of failures of serial production line. In case of the investigated object, the simulation model was tested to find technological solutions which could compensate for the impact of failures on the operation of important objects present on the line before a failures occurs. A possible solution may be to introduce a new buffer or to adjust the size of existing buffers. Validation is one of the most significant stages in the process of constructing simulation models, as it concerns the credibility of the model. The article presents the use of disturbances modeling, especially breakdowns and micro-stoppages, in the simulation model. It also shows the statistical distribution applied in the model and defines the validation measurement instrument as well as evaluation criteria. All these features are the major strengths of the article.

Keywords

  • a simulation model
  • failure
  • validation

Słowa kluczowe

  • model symulacyjny
  • awarie
  • walidacja
Open Access

Dependability issues in designing warehouse facilities and their functional areas / Zagadnienia niezawodności w projektowaniu magazynów i ich obszarów funkcjonalnych magazynów

Published Online: 16 Nov 2016
Page range: 201 - 228

Abstract

Abstract

The dependability of warehouse facility results from dependability and reliability of its functional areas and effects on the reliability of entire supply chain. The elements of dependability of warehouse facilities should be taken into account at the design stage, but this is difficult because of the complexity of these systems and the variability of qualitative and quantitative structure of material flows at the inputs and outputs. Currently used procedures in warehouse designing include the dependability as criteria to assess the solutions in simplistic terms. The paper presents attempts to systematize basic research issues related to the dependability of warehouses as elements of supply chains on one hand, and technical systems on the other. This will allow specifying reliability measures possible to determine in relation to typical parameters of warehouse facility. This will lead to generalization of the model assessing the reliability of the warehousing processes.

Keywords

  • dependability
  • warehouse designing
  • warehousing process

Słowa kluczowe

  • niezawodność
  • projektowanie magazynów
  • proces magazynowy
Open Access

Preliminary analysis of the availability of the medium firefighting vehicles chassis / Wstępna analiza gotowości podwozi średnich samochodów pożarniczych

Published Online: 16 Nov 2016
Page range: 229 - 244

Abstract

Abstract

The paper presents analysis of the availability of medium firefighting and rescue vehicles chassis used by State Fire Brigade in Warsaw. For analysis of availability of vehicles chassis the technical availability factor has been used. Additionally, in the paper time to restore of the vehicles chassis regarding causes of unavailability has been presented. In the tests the data obtained from the Decision Support System (DSS) of Warsaw State Fire Brigade were applied. The research included the period from January 2012 to May 2015. Based on the results, it can be statement that the operating mileage is the crucial factor of operating degradation of firefighting vehicles chassis.

Keywords

  • availability
  • reliability
  • firefighting vehicle

Słowa kluczowe

  • gotowość
  • niezawodność
  • samochód pożarniczy
Open Access

Risk analysis in case of fire on PZL BRYZA using the event tree analysis / Analiza ryzyka w przypadku pożaru samolotu PZL BRYZA z wykorzystaniem metody drzewa zdarzeń

Published Online: 16 Nov 2016
Page range: 245 - 270

Abstract

Abstract

The paper presents application of the Event Tree Analysis method for analyzing risk in complex situations. A model associated with the occurrence of fire on PZL Bryza was developed using the aircraft flight manual. The probabilities of events caused by the initiating event and the losses caused by each of the highlighted final undesirable events were determined. Statistical data for flight safety was used to calculate probability of the initiating event. The risk was determined as the probability that losses of at least given category will occur during one flight. As a result of the conducted analysis it was found that the probability of in-flight fire is very small. However, in such a case, the probability of death of one or more passengers is relatively high.

Keywords

  • risk analysis
  • Event Tree Analysis
  • flight safety

Słowa kluczowe

  • analiza ryzyka
  • metoda drzewa zdarzeń
  • bezpieczeństwo lotów
Open Access

Markov model in logistic management of enterprise / Model Markowa w logistycznym zarządzaniu przedsiębiorstwem

Published Online: 16 Nov 2016
Page range: 271 - 290

Abstract

Abstract

The article presents an analysis of exploitation of vehicles of a transportation company, offering services in international transport. The research referred to two stages of the company operations - before and after introducing some organizational changes. Due to the lack of relation between probability of the future event and all preceding events except the current one, Markov processes have been used in the calculations. A simple, 5-state model, constituted a base for defining main directions of improvements and at the same time, effectively indicated areas of negligence and failures. The conducted research showed many faults in the studied system resulting from excessive trust towards the drivers and allowed to introduce some changes and corrections, which in effect allowed to obtain better results.

Keywords

  • Markov model
  • transport
  • logistics

Słowa kluczowe

  • model Markowa
  • transport
  • logistyka
Open Access

Genetic algorithm method for solving the optimal allocation of response resources problem on the example of polish zone of the Baltic Sea / Metoda algorytmów genetycznych do rozwiązywania problemów optymalnej alokacji środków do zwalczania rozlewów olejowych na przykładzie polskiej strefy Morza Bałtyckiego

Published Online: 16 Nov 2016
Page range: 291 - 310

Abstract

Abstract

The paper presents research related to optimal allocation of response vessels. Research belong to the logistical problem, location-allocation type (LA). Research is focused on vessels belongs to polish Search and Rescue. For the optimal allocation of resources used two-stages method wherein the first stage, using genetic optimization methods and consist in such allocation of response vessels to minimize costs of the spill at sea. In the second stage uses an accurate simulation model of oil spill combat action to verify the solutions obtained by genetic algorithm method.

Keywords

  • oil spill
  • optimization
  • allocation

Słowa kluczowe

  • rozlewy olejowe
  • optymalizacja
  • alokacja

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