Autor: Muślewski, Ł. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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: 2.

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: 3.

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: 4.

Tytuł:: Study and assessment of transport system operation efficiency
Autorzy:: Muślewski, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/247798.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
efficiency
effectiveness
quality
Opis:: The article deals with an issue of complex systems operation efficiency, especially of the ones which are connected with transport. The operation of such systems aims at developing both passenger and load transportation in terms of safety, reliability, effectiveness and environment friendliness. These properties should be researched in a particular place and time that were earlier planned and selected. Operation effectiveness is an important component ofwidely understood social-economic and technological research, including assessment of the considered transport system. The concepts of operation efficiency, most frequently used in literature, express it as the relation between benefits (treated as profit or income in terms of economy) and costs. However, a ratio of two quantities, the flrst of which is evaluated positively, that is, aims at reaching the highest values and the other one being negative, is considered as the most important definition of efficiency. In some cases these quantities can assume constant values, treated as basic ones. It should be remembered, though, that in many cases the system goals are formulated in different terms than, e.g. economic ones. And the systems should be evaluated taking into consideration the goal achievement degree. The article deals with an analysis of distinguished values of selected assessment indices for an investigated transport system, and on this basis an assessment of the transport system operation efficiency, in a given period of time, has been made.
Źródło:: Journal of KONES; 2010, 17, 4; 353-359
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

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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Skocz do pozycji: 6.

Tytuł:: Zastosowanie metody głównych czynników do badania wymiarowości zbioru kryteriów
Analysis of main components for dimensionality of criteria set
Autorzy:: Muślewski, Ł.
Knopik, L.
Powiązania:: https://bibliotekanauki.pl/articles/310176.pdf
Data publikacji:: 2013
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:: metoda głównych czynników
system transportowy
model ocenowy
ocena jakości
main components
transport system
evaluation model
quality assessment
Opis:: Analiza wyników badań eksploatacyjnych oraz literaturowy przegląd zagadnienia wykazały, że problematyka wyznaczenia optymalnej liczby kryteriów oceny jakości działania danego systemu transportowego jest istotnym i aktualnym zagadnieniem, mającym bezpośredni wpływ na wynik realizowanej oceny. Całość rozważań dokonano na podstawie analizy danych pozyskanych z badań zrealizowanych w rzeczywistym systemie autobusowego transportu miejskiego, świadczącego usługi transportowe w 500 tysięcznej aglomeracji miejskiej. Na podstawie zrealizowanych badań, wyznaczono zbiór kryteriów oceny systemu. Niniejsze kryteria poddano ocenie z punktu widzenia ich istotności na jakość działania obiektu badań, dokonując ich podziału na cztery grupy, w zależności od preferencji i wymogów kierowców, pasażerów oraz pracowników podsystemu sterowania i zapewnienia zdatności. W celu optymalizacji wymiarowości rozpatrywanego zbioru kryteriów, zastosowano metodę głównych czynników, która polega na porównaniu wyróżnionych zbiorów parami, i na tej podstawie ustaleniu korelacji między ich elementami. W wyniku zrealizowanych badań wnioskowano o liczności i istotności zbioru analizowanych kryteriów. Na tej podstawie wyróżniono zbiór kryteriów, które w dalszym etapie realizowanych prac, uwzględniono w procesie budowy modelu wynikowego oceny jakości działania systemu transportowego.
The analysis of experimental tests and a literature review have revealed that the problems connected with determining the optimal number of criteria for of a given transportation system operation quality assessment is an issue of great importance as it has a direct influence on the result of the assessment. The whole study has been performed on the basis of an analysis of data obtained from tests carried out in a real busses transportation system providing services in an urban agglomeration of 500 thousand inhabitants. On the basis of the carried out tests, a set of criteria for assessment of the system, were developed. These criteria were evaluated from the point of view of their influence on the research object operation quality, being divided into four groups, depending on preferences and requirements of drivers, passengers, and workers of the subsystem of control and serviceability ensuring. In order to optimize dimensionality of the considered set of criteria, the method of analysis of main components, involving a comparison of identified pairs of sets in order to find correlation between their elements, was used. In result of the tests the number and significance of these sets were established. On the basis of this, a set of criteria was identified. They were used in further analysis and taken into consideration while building a resultant model for a transport system operation quality assessment.
Źródło:: Autobusy : technika, eksploatacja, systemy transportowe; 2013, 14, 3; 2345-2352
1509-5878
2450-7725
Pojawia się w:: Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Application of principal component analysis for optimization of a system operation assessment criteria set
Autorzy:: Muślewski, Ł.
Knopik, L.
Powiązania:: https://bibliotekanauki.pl/articles/247903.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: quality
criteria
transport system
analysis
canonical correlations
optimization
Opis:: The analysis of results of experimental tests and a literature survey of the issue reveal that the subject matter connected with determination of the optimal number of a given transportation system operation assessment criteria has a direct influence on the result of the considered assessment. The analysis was made within the research on operation quality of a selected transportation system. In order to optimize the analysed system assessment criteria, a theoretical description has been made and an example of canonical correlations application has been presented. Analysis of canonical correlations involves determination of linear combination parameters of the studied sets so that the obtained correlation coefficient will have maximal value. In the successive step, the next pair of linear combination are not correlated with the combinations determined in the first step. The determined correlations can measure the power of relation between two sets of variables and are useful in the process of choosing significant criteria for a given research object operation quality assessment.
Źródło:: Journal of KONES; 2013, 20, 4; 307-312
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Application of principal component analysis for optimization of a system operation assessment criteria set
Autorzy:: Muślewski, Ł.
Knopik, L.
Powiązania:: https://bibliotekanauki.pl/articles/242963.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: quality
criteria
transport system
analysis of main components
optimization
Opis:: The analysis of results of experimental tests and a literature survey on the issue reveal that the subject matter connected with determination of the optimal number of a given transportation system operation assessment criteria has a direct influence on the result of the considered assessment. Whole study has been made on the basis of the analysis of data obtained from tests performed in a real municipal transportation system, providing transport tasks in a 400 thousand urban agglomeration. On the basis of the tests, there was determined a set of sixteen criteria for the system operation assessment, depending on preferences of drivers, passengers, workers of the system providing vehicles with serviceability and the last group of results is a final assessment. The research involved tests of significance for correlation coefficients between the assessment criteria. The method of main factors involving analysis of a linear transformation of existing vector of variables X into Y has been used to study the task dimensioning. Proper values, providing basis for determination of a new space correspond to coordinates of the newly created vector Y. On this basis, the dimension of the criteria and their significance space has been concluded. The determined criteria have been accepted for the development of a resultant model for assessment of a transportation system operation quality.
Źródło:: Journal of KONES; 2012, 19, 4; 481-486
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: The idea of the genetic system of power plant exploitation planning
Optymalizacja planowania obsługi i użytkowania wybranego systemu eksploatacji maszyn i urządzeń
Autorzy:: Pająk, M.
Muślewski, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/360694.pdf
Data publikacji:: 2011
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: analiza obiektowa
projektowanie obiektowe
algorytmy genetyczne
object oriented analysis
object oriented designing
genetic algorithms
large-scale systems
Opis:: Currently, accurate activity planning and operating become to be the most important tasks of the factory management. Main reason of that is a consumer market which force flexibility and ability to quick response on fast changeable demand and supply. In such environment, the operation planning process has to integrate data from all parts of factory activity. It is very difficult task especially in case of the industrial objects. To create the optimal or suboptimal manufacturing plan an optimisation technique should be implemented. The paper presents an idea and the object model of the computerized system designed to integrate the data of the power plant operation. The system, using genetic algorithms, generates optimal plan of production. The implementation of the system in the biggest hard coal fired power plant in Poland decreased the costs of the energy generation.
Obecnie jednym z najważniejszych celów zarządzania eksploatacją obiektu przemysłowego jest właściwe planowanie procesów użytkowania i obsługi. Jest to spowodowane potrzebami wolnego rynku wymuszającymi elastyczność i szybkozmienność produkcji. Przy takim podejściu niezbędnym jest uwzględnienie w procesie planowania informacji dotyczących wszystkich podsystemów składających się na system eksploatacyjny obiektu przemysłowego. Jednocześnie w celu opracowania optymalnego lub suboptymalnego planu koniecznym jest zastosowanie wybranej techniki optymalizacyjnej. W opracowaniu przedstawiono obiektowy model zintegrowanego systemu komputerowego nadzorującego pracę całego systemu eksploatacyjnego przedsiębiorstwa produkcyjnego. Zaprezentowany system umożliwia opracowanie optymalnego lub suboptymalnego planu eksploatacji przy użyciu algorytmów genetycznych.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2011, 27 (99) z. 2; 43-50
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Research on effectiveness of transport means operational reliability and efficiency repairs
Autorzy:: Wdzięczny, A.
Muślewski, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/242143.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
reliability
efficiency
failures
simulation model
Opis:: Systems of transport means operational use are such systems whose main goal is to carry out transport tasks on an assigned territory. In each transport system assurance of the used transport means availability, viewed as the object capability to accomplish the transport task, is of great importance. A certain number of damages results from natural wear of transport means elements which is a natural phenomenon, whereas other damages can be caused by in effective repair of the previous damage. In this way, within a short time, there occur the so called repetitive damages to the repaired element. This reflects improper organization of repairs, poor skills of the maintenance workers, limitations connected with wrong diagnosing before and after the repair. Damages occurring during means of transport operation involve bearing considerable costs while assuring the transport means operational reliability, as well as covering the losses connected with impossibility to accomplish the transport task. Finding out the causes of in effective repairs would reduce the costs that a transport company has to bear to provide efficient operation of means of transport. Times of resultant repairs and being unftt for use have been analyzed, as well as costs of repairs, spare parts, maintenance and operation.
Źródło:: Journal of KONES; 2009, 16, 2; 485-494
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

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: 12.

Tytuł:: Damage rate as a reliability characteristics having significant influence on the operational quality of the technical object 375TS being operated and maintained in the transport systems
Autorzy:: Muślewski, Ł.
Wdzięczny, A.
Powiązania:: https://bibliotekanauki.pl/articles/244883.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
reliability
efficiency
maintenance
failures
Opis:: This paper presents theoretical basis for evaluation of the transport system operation quality. A general evaluation model was built, and further part of the paper is to consider the theme of damageability of the means of transport, as a reliability feature, constituting one of the most important criterion to evaluate the transport system operation. Based on the analysed references in question as well as on the results of our own research it has been found that the damages to the means of transport, being utilised within the transport systems, are a result of interaction of various forcing factors. Some number of the damages results from natural wear of the means of transport elements, which is a natural phenomenon, while the remaining damages may be caused by an inefficient repair of the previous damage. This leads to so called secondary damages to the repaired element, occurred within a short time interval, which is a proof of inappropriate organization of the repairs, poor training level of the repairing teams, limits related to pre and after repair diagnosis, which directly affects reliability of the means of transport and consequently the operation quality of the transport systems in which they are being operated and maintained. Based on the analysis of the investigation results it has been found that the primary damages are independent on one another and they occur randomly. The secondary damages are dependent, because their occurrence depends on prior occurrence of the primary damage and the effect of its improper repair or improper repair of the next secondary damage.
Źródło:: Journal of KONES; 2008, 15, 4; 375-384
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

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: 14.

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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Tytuł:: Analysis and evaluation of application of car modular systems in polish road transport
Autorzy:: Muślewski, Ł.
Lewalski, M.
Woropay, M.
Powiązania:: https://bibliotekanauki.pl/articles/246606.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
car modular system
SWOT analysis
efficiency
Opis:: This study presents an analysis and evaluation of application of European Car Modular Systems in the Polish road transport. Those systems and respective terminology have been analysed and classified. Application of such systems in other countries of the European Union has been described. SWAT analysis has also been carried out in order to enable the most optimal choice of modular system in freight transport to match the condition and characteristics of the Polish road infrastructure. The systems have also been analysed in terms of efficiency and the analysis was performed on the basis of a selected research object – a transport company. An analysis of costs and estimated profits from transport services to be provided by those systems has been carried out on the basis of the research object in comparison with costs borne by the considered company with currently used transport means. This study shows that taking into consideration the results of analyses, safety aspect, road infrastructure and energy efficiency of the vehicles it was found that the proposed oversized vehicles could be implemented to be used on the Polish roads. The analyses and tests performed for a transport logistic company discussed in this article have demonstrated that the proposed modular systems will undoubtedly allow reducing significantly the costs of transport services by increasing load capacity of vehicles.
Źródło:: Journal of KONES; 2015, 22, 4; 211-220
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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