Temat: system operation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analysis of significance of criteria for transportation system operation quality assessment
Autorzy:: Muślewski, Ł.
Pająk, M.
Ślęzak, M.
Polański, J.
Powiązania:: https://bibliotekanauki.pl/articles/242909.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
transportation system assessment
assessment criteria
system operation quality
resultant model
Opis:: Selection and determination of assessment criteria is of great importance for evaluation of the system operation quality. The analysis was made within the research on operation quality of a selected transportation system. This was a real system, operating purposefully, providing passengers with transport tasks, over an assigned urban area and suburbs, according to an established schedule. Such a system of operation is affected by the behaviour of people, functioning of transport means and the environmental impact. On the basis of performed tests, a set of criteria, whose fulfilment degree is crucial for functioning of the analyzed system, has been determined. It must be remembered, though those particular criteria are diversified in terms of their significance for the transportation system assessment. Therefore, the analytic hierarchy process AHP has been applied in this work, in order to establish significance of particular criteria, from the point of view of the set quality requirements for the studied transportation system. The analytic hierarchy process has been used in the papers concerning the problems of quality control and assessment of transportation systems. It is one of several tools supporting the process of selection of the most significant criteria aiming at reduction of the considered vector dimensionality and establishing a set of features, accepted for an assessment of the research object operation quality, while building the resultant model.
Źródło:: Journal of KONES; 2012, 19, 4; 473-480
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of the change of qualitative states of transportation system operation
Autorzy:: Muślewski, Ł
Knopik, L.
Woropay, M.
Powiązania:: https://bibliotekanauki.pl/articles/247633.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
system operation quality
model
Markov chain
semi-Markov process
expected coast
Opis:: This paper deals with the problems connected with evaluation of a technical system and its being later used for decision making in order to provide complex technical systems with appropriate operation quality. The research object is a real municipal transportation system. The assessment quality of the systems operation is based on the changes of the systems features values. The features describe the operation of the systems operators, controlled technical objects and the environment influence. The assessment and the support the demand quality of the systems operation from the safety, efficiency, economic and reliability point of view is the basic factor of the executed exploitation process. The notion of a system operation quality has been defined, a scheme of an assessment model has been presented and a random process, providing the basis for evaluation of a technical system, has been developed. On the basis of carried out experimental tests there have been distinguished four states of a system operation quality reflecting intervals of values of grades that were characteristic for given time moments. A model of system operation qualitative state changes, based on Markov chain, has been considered in this paper. A system of equations has been determined for a distinguished Markov chain on the basis of which a mathematical model for assessment and control of selected types of transportation systems will be developed.
Źródło:: Journal of KONES; 2014, 21, 3; 251-257
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Identification and analysis of transport systems operation quality assessment criteria
Autorzy:: Muślewski, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/247398.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
operation quality
criteria
Opis:: The study deals with operation quality assessment of operating complex systems especially transport ones. It has been established that assessment of their operation quality depends on fulfilment level of specified criteria. Thus, determination of a set of criteria in terms of their quantity and significance is of great importance. Since the considerations refer to socio-technical systems of the type: human machine and environment , and especially municipal transport systems, these criteria account for human actions, machine operation (transport means) and the impact of factors coming from the environment. The basis of their operation quality is provided by a set of significant, variable in time, measurable and independent features whose values, in a given time period, determine the fulfilment degree of the specified criteria. .On the basis of fulfilment degree of the distinguished criteria, an assessment of operation quality and classification of the considered transport systems are made. In this study, one way of choosing the criteria has been proposed. This method is based on square matrixes and questionnaire survey, which are usedfor establishing their influence on the transport system operation quality, for selected transport means, used in urban complexes.
Źródło:: Journal of KONES; 2010, 17, 3; 313-320
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Control method for transport system operational quality
Autorzy:: Muślewski, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/245636.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: operation quality
model
transport system
metrics
Opis:: This paper deals with selected problems connected with transport means operation quality. Basic concepts concerning the problems of quality have been defined, and general characteristics of the elaborated methodology have been made. Description of rules on the basis of which the method was elaborated, has been presented. An algorithm of mathematical model determination has been created and a model for quality assessment of the system operation has been built. This model is supposed to serve as a general abstract form for operation quality assessment of a wide class of real transport systems different in terms of their features, structure and operation. The further part of the paper deals with possibilities of quality control in order to provide the desired level of the transport system operation quality which will be an effect of the carried out research, especially, the results, obtained on the basis of the proposed assessment method. The presented methodology can be found to be a universal tool for diagnostic, prognostic processes, and above all, for optimization and rational control ofcomplex systems of technical object using, especially transport ones through assessment of their states, determined on the basis of changes of significant features characteristic for the system.
Źródło:: Journal of KONES; 2009, 16, 3; 275-282
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Research and assessment of transport means operational quality
Autorzy:: Muślewski, Ł.
Pająk, M.
Powiązania:: https://bibliotekanauki.pl/articles/242277.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: operation quality
model
transport system
metrics
Opis:: In this paper there has been developed a method for the transport system operation quality assessment. The concept of the transport system quality has been defined. There has also been described the proposed evaluation method and the process of an assessment model construction. Basic features of the metrical space have been characterized and a proposition o f a system operation quality evaluation metrics has been presented. Also, studies concerning the choice of assessment criteria and distinction of the most signiflcant set of features accepted for the resultant model of the examined transport system operation quality, have been presented. It should be emphasized that using the presented method it is possible to make an assessment of the same system, in different times, with the assumption that the rating is performed on the basis of homogenous criteria, and with the use of a set of the same features, distinguished for the deser iption of the research object.
Źródło:: Journal of KONES; 2009, 16, 2; 349-359
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Analysis of intermode connections in terms of transport system development in Poland
Autorzy:: Muślewski, Ł.
Bojar, Ł.
Szubartowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/247176.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
operation
inter-mode transport
efficiency
Opis:: Continuous and dynamic development of freight transports, especially in the road sector, results in generation of negative effects on the environment and poses hazards to human health and life and by generating high costs it creates significant economic, social and environmental problems. Therefore, it is necessary to take actions aiming at promotion of development of sustainable and efficient transport systems, integrating different transport branches and technologies. Such requirements are fulfilled by the subsystem of inter-mode transport system, that is, combined transport which is an alternative for a traditional road transport, and can also play a very important role in achieving goals of the European policy for sustainable development of transport. Its promotion can largely contribute to solving present and future problems connected with transport in Europe through relieving excessively loaded roads from a certain portion of freight transports which will result in improvement in the traffic safety and reduction of its negative impact on the humans and the environment. Providing high quality of inter-mode transport operation, especially in terms of reliability, punctuality, safety and keeping delivery terms depends on the infrastructure state, modern equipment of terminals and efficiency and effectiveness of their functioning. It should be emphasized that promoting inter-mode transport provides social benefits on a big scale as shifting a part of international road transports into a combined one inter-mode can have a significant influence on reduction of the road transport external harmful effects. In this paper, there has been made an analysis and assessment of inter-mode transports in Poland, taking into consideration the motor and railway (linear and point) infrastructure. Also, a suggestion concerning the location and construction of terminals for the service of inter-mode transports has been considered. Moreover, a technical-economic analysis of implementation of the discussed solution purposefulness has been made as well.
Źródło:: Journal of KONES; 2011, 18, 4; 299-306
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Method for assessment of transport means failures repairs
Autorzy:: Muślewski, Ł.
Woropay, M.
Neubauer, A.
Szubartowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/246101.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
operation process
semi-Markov model
efficiency
Opis:: An analysis of experimental tests and a literature survey of the issue revealed that the problems connected with assessment of costs and effectiveness of transport means repairs has a significant influence on their operation efficiency. Operating factors affecting the elements of technical objects cause negative changes in their features resulting in failures. The failures are referred to as events which significantly impair the vehicle operation efficiency, safety and reliability. On the basis of experimental tests concerning times of failures occurrence, it was found that the set of failures can be divided into subsets of primary and secondary failures. The tests results revealed that the most frequent cause of secondary failures occurrence was improperly performed primary repairs. Primary failures are not related to each other and they appear randomly. However, secondary failures are related to each other as their occurrence is conditioned by the primary failure and results from an inappropriate performance of the successive secondary failure. Basing on an analysis of the author 's own tests results, it was established that failures of transport means used in real transport systems are the effect of impact of various forcing factors. Some failures result from the natural wear of machine elements, whereas, other failures can be caused by inappropriate repair of the previous damage. Thus, there occur the so called secondary failures in a short period of time. In connection with this, high efficiency of the repair performance is of primary importance as it largely affects efficiency of transport tasks accomplishment. In this article, there has been discussed a method developed for assessment of repair costs connected with elimination of secondary failures and its influence on the studied transport system operation efficiency. Familiarity with available technologies for repairs of primary failures as well as with costs of work and costs connected with technical equipment of the repair stations enables specification of the lowest costs necessary for reduction of the number of secondary failures and the average time of their repairs.
Źródło:: Journal of KONES; 2011, 18, 3; 299-307
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Analysis of problems connected with quality of operation systems functioning
Analiza problematyki jakości działania systemów eksploatacji
Autorzy:: Muślewski, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/360678.pdf
Data publikacji:: 2011
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: jakość
identyfikacja
model
ocena
system
transport
operation quality
transport system
metrics
fuzzy logic
Opis:: The basis of operation systems functioning is their ability to accomplish set goals, in given conditions, place, quantity and time. Assessment of their operation quality is a summary measurement of their efficiency, reliability, safety, environment friendliness and ergonomics. The analysis of literature on this subject proves, that studying the systems operation quality is one of the main factors, which make up the processes of their service, repairs, control, supply, diagnostics, and most of all, operation of used machines and devices. The studied systems belong to socio-technical systems of the type H–M–E (human–machine–environment), to which the discussed transport system, being the research object of this work, belongs as well. Basing on the author's own research and the identification of processes occurring within the studied object, a method and a model for its operation quality assessment have been developed and discussed in the article. Application of the method enables making an assessment of the research object operation quality, depending on changes of values of features describing the actions of operators, technical objects operated by them and the impact of the environment.
Podstawą działania systemów eksploatacji jest realizacja postawionych im celów w określonych warunkach, miejscu, ilości i czasie. Ocena jakości ich funkcjonowania stanowi zbiorczą miarę zarówno pod względem efektywności, niezawodności, bezpieczeństwa, ekologiczności, jak i ergonomiczności. Z analizy literatury przedmiotowej wynika, że badanie jakości funkcjonowania tych systemów stanowi jeden z podstawowych czynników w procesach obsługowo-naprawczych, sterowania, zasilania, diagnozowania, a w szczególności użytkowania eksploatowanych w nich maszyn i urządzeń. Omawiane systemy zalicza się do systemów socjotechnicznych typu (człowiek–maszyna–otoczenie), wśród których wyróżnić można system transportowy, stanowiący w niniejszym opracowaniu obiekt badań. Na podstawie wyników własnych badań eksploatacyjnych oraz identyfikacji procesów realizowanych w obiekcie badań w opracowaniu przedstawiono metodę oraz zbudowano model oceny jakości działania takich systemów. Zastosowanie tej metody umożliwia ocenę jakości ich działania, realizowaną w zależności od zmian wartości cech opisujących działanie operatorów, sterowanych przez nich obiektów technicznych oraz wpływu otoczenia.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2011, 27 (99) z. 2; 36-42
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Analysis of operation efficiency of selected transport systems
Autorzy:: Muślewski, Ł.
Lewalski, M.
Aleksandrowicz, P.
Landowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/245072.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
efficiency
operation process
maintenance process
semi-Markov process
simulation tests
Opis:: This study deals with the problems connected with evaluation of technical systems efficiency of particular transport systems. The main goal of such a system operation is its effective functioning, through rational control of its particular activities and subsequent processes. A literature analysis of the definition of the efficiency term has been made. A real transport system has been accepted to be the research object. The system belongs to the group of sociotechnical systems in which evaluation of its operation efficiency depends on performance of operators, transport means and the impact of environmental factors. Criteria and methods of operation efficiency evaluation have been determined in this study as well as assessment indexes for transport systems. It has been shown that evaluation of a repair efficiency has a large influence on the efficiency of the whole system operation, especially the influence of secondary failure repairs, on the values of particular efficiency indexes. A semi-markov model of operation and maintenance of transport means used in the research object has been developed. This model provides the basis for evaluation of the influence of the processes involved in preparing transport means for service on the system operation efficiency. Moreover, the research also describes how to verify the developed model and present its simulation tests. The study is summarized with conclusions formulated based on the evaluation of the influence of the operation and maintenance processes on the investigated transport system operation efficiency.
Źródło:: Journal of KONES; 2016, 23, 3; 351-358
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Semi-Markov model of quality state changes of a selected transport system
Autorzy:: Landowski, B.
Muślewski, Ł.
Knopik, L.
Bojar, P.
Powiązania:: https://bibliotekanauki.pl/articles/241811.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
efficiency
operation process
maintenance process
semi-Markov process
simulation tests
Opis:: The study deals with the problems connected with evaluation and analysis of transport systems operational quality. The research object is a real, sociotechnical system (of the type H-M-E) whose functional quality is affected by: operators, equipment and technical state of he operated vehicles and the environmental impact. A scheme of an assessment model was built on the basis of a developed concept of a system operational quality and a random process was defined to be used for the analysis. The assessment process involves investigating the variability degree of properties included in the resultant model in a given time and determining whether and to what degree the obtained values meet the requirements of the system appropriate operational quality. On the basis of the above assumptions and in result of experimental tests, four qualitative states of a transport system functioning, which represent intervals of values of the obtained grades in given time moments, were distinguished. The study presents a model of system operation qualitative state changes developed with the use of Markov chain inserted into a certain semi-Markov process. A graph and a matrix for probability of transition between the states were created and boundary distributions of the process were determined on the basis of experimentally obtained data. A system of equations was determined for the distinguished Markov chain, on the basis of which a mathematical model for assessment and control of operational quality of selected types of transport systems will be built.
Źródło:: Journal of KONES; 2017, 24, 4; 141-148
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Criteria based evaluation of municipal transportation system operation
Kryterialna ocena jakości działania systemu transportu miejskiego
Autorzy:: Muślewski, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/1364666.pdf
Data publikacji:: 2013
Wydawca:: Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:: transport system
quality operation
criteria evaluation
principal component analysis
statistical analysis
system transportowy
jakość działania
kryteria oceny
metoda głównych czynników
analiza statystyczna
Opis:: An analysis of experimental tests results and a literature review show that determination of the optimal number of criteria for assessment of operation quality of a given transportation system is crucial to the assessment result. The analysis has been performed on the basis of research on operation quality of a given transportation system. This is a real transportation system providing the population with transport services in a given urban and suburban area. The operation quality of such a transportation system is affected by people's behavior, operation of the vehicle, and the impact of the environment. In order to ensure appropriate quality of the system functioning it needs to be constantly evaluated. The transportation process ought to be optimized and innovative solutions should be implemented. In this work a set of evaluation criteria has been determined, on the basis of which, evaluation and analysis of the quality of transport services provided by a given municipal transportation system have been performed.
Analiza wyników badań eksploatacyjnych oraz literaturowy przegląd zagadnienia wykazały, że problematyka wyznaczania optymalnej liczby kryteriów oceny jakości działania danego systemu transportowego jest istotnym zagadnieniem, mającym bezpośredni wpływ na wyniki realizowanej oceny. Całość rozważań dokonano w ramach realizowanych badań dotyczących oceny i sterowania jakości działania wybranego systemu transportowego. Jest to rzeczywisty, działający celowo system, świadczący usługi przewozu pasażerów na określonym obszarze miejskim i terenach podmiejskich. Na jakości działania takiego systemu ma wpływ działanie ludzi, funkcjonowanie środków transportowych oraz oddziaływanie otoczenia. Zapewnienie oczekiwanego poziomu jakości świadczonej usługi transportowej powinno być związane z ciągłą jego oceną, optymalizowaniem procesu transportowego oraz wprowadzeniem innowacyjnych rozwiązań. W niniejszym opracowaniu wyznaczono zbiór kryteriów ocenowych i na ich podstawie dokonano oceny oraz analizy poziomu jakości usług przewozowych świadczonych przez wyróżniony system transportu miejskiego.
Źródło:: Archiwum Motoryzacji; 2013, 4; 33-48
1234-754X
2084-476X
Pojawia się w:: Archiwum Motoryzacji
Dostawca treści:: Biblioteka Nauki

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