Temat: system operation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Prediction of complex technical systems operation processes
Autorzy:: Soszyńska, J.
Kołowrocki, K.
Blokus-Roszkowska, A.
Guze, S.
Powiązania:: https://bibliotekanauki.pl/articles/2069638.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system operation
semi-Markov process
system operation prediction
transportation systems
Opis:: There is presented the contents of the training course addressed to industry. The curriculum of the course includes the methods, algorithms and procedures for prediction of the operation processes of the complex technical systems and their application in practice. It is based on the theoretical backgrounds concerned with the semi-markov modelling of the complex technical systems operation processes and on the methods of these processes prediction. The illustrations of the proposed methods and procedures practical application in port, shipyard and maritime transport sector and are included.
Źródło:: Journal of Polish Safety and Reliability Association; 2010, 1, 2; 497--510
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: A general model of industrial systems operation processes related to their environment and infrastructure
Autorzy:: Kołowrocki, K.
Soszyńska, J.
Powiązania:: https://bibliotekanauki.pl/articles/2069711.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system operation process
semi-markov process
system in varying operation
Opis:: The operation process of the complex industrial system is considered and its operation states are introduced. The semi-markov process is used to construct a general probabilistic model of the considered complex industrial system operation process. To build this model the vector of probabilities of the system operation process initials operation states, the matrix of probabilities of the system operation process transitions between the operation states, the matrix of conditional distribution functions and the matrix of conditional density functions of the system operation process conditional sojourn times in the operation states are defined. To describe the system operation process conditional sojourn times in the particular operation states the uniform distribution, the triangle distribution, the double trapezium distribution, the exponential distribution, the Weibull distribution and the normal distribution are suggested. Under these all assumptions from the constructed general model the main characteristics of the system operation process are find. The mean values of the system operation process conditional sojourn times in particular operation states having these distributions are calculated. Moreover, the unconditional distribution functions of the system operation process unconditional sojourn times in the particular operation states, the mean values of the system operation process unconditional sojourn times in the particular operation states, the limit values of the transient probabilities of the system operation process at the particular operation states and the mean values of the system operation process total sojourn times in the particular operation states are determined.
Źródło:: Journal of Polish Safety and Reliability Association; 2008, 2; 223--226
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Reliability assessment of an exemplary system operating at variable conditions
Autorzy:: Kołowrocki, K.
Kuligowska, E.
Soszyńska-Budny, J.
Powiązania:: https://bibliotekanauki.pl/articles/2069201.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system reliability
system operation process
analytical approach
Opis:: The reliability analysis of a multistate complex system subjected to varying in time its operation process is performed. A semi-Markov process is applied to construct the multistate model of the system operation process and its main characteristics are determined. Analytical linking of the system operation process model with the system multistate reliability model is proposed to get a general reliability model of the complex system operating at varying in time operation conditions and to find its reliability characteristics. The constructed integrated general model of a complex multistate system reliability, linking its reliability model and its operation process model and considering variable at different operation states its reliability structure and its components reliability parameters is applied to the reliability evaluation of an exemplary system.
Źródło:: Journal of Polish Safety and Reliability Association; 2015, 6, 1; 129--137
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Reliability and availability of a ground ship-rope transporter in variable operation conditions
Autorzy:: Blokus-Roszkowska, A.
Kołowrocki, K.
Powiązania:: https://bibliotekanauki.pl/articles/2069683.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: transportation system
reliability
risk
availability
system operation proces
Opis:: In the paper the environment and infrastructure influence of the ground ship-rope transporter operating in Naval Shipyard in Gdynia on its operation processes is considered. The results are presented on the basis of a general model of technical systems operation processes related to their environment and infrastructure. The transporter operation process is described and its statistical identification is given. Next, the reliability, risk and availability evaluation of the transporter in variable operation conditions is presented. In addition, the reliability and availability basic characteristics of the system assuming its components’ failure dependence are determined. Finally, the obtained results for the ground ship-rope transporter under the assumption that its components are dependent and independent are compared.
Źródło:: Journal of Polish Safety and Reliability Association; 2009, 1; 43--56
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Reliability and availability of a shipyard ship-rope elewator in variable operation conditions
Autorzy:: Blokus-Roszkowska, A.
Kołowrocki, K.
Powiązania:: https://bibliotekanauki.pl/articles/2069697.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: transportation system
reliability
risk
availability
system operation proces
Opis:: In the paper the environment and infrastructure influence of the ship-rope elevator operating in Naval Shipyard in Gdynia on its operation processes is considered. The results are presented on the basis of a general model of technical systems operation processes related to their environment and infrastructure. The elevator operation process is described and its statistical identification is given. Next, the elevator is considered in varying in time operation conditions with different its components’ reliability functions in different operation states. Finally, the reliability, risk and availability evaluation of the elevator in variable operation conditions is presented.
Źródło:: Journal of Polish Safety and Reliability Association; 2009, 1; 57--66
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: Reliability and risk evaluation of a container gantry crane at variable operation conditions
Autorzy:: Soszyńska-Budny, J.
Powiązania:: https://bibliotekanauki.pl/articles/2069538.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: reliability function
risk function
system operation processes
Opis:: The joint model of the system operation process and the system multi-state reliability is applied to the reliability and risk evaluation of the container gantry crane. The container gantry crane is described and its operation process unknown parameters are identified on the basis of real statistical data. The mean values of the container gantry crane operation process unconditional sojourn times in particular operation states are found and applied to determining this process transient probabilities in these states. The container gantry crane different reliability structures in various its operation states are fixed and their conditional reliability functions on the basis of data coming from experts are approximately determined. Finally, after applying earlier estimated transient probabilities and system conditional reliability functions in particular operation states the unconditional reliability function, the mean values and standard deviations of the container gantry crane lifetimes in particular reliability states, risk function and the moment when the risk exceeds a critical value are found. he joint model of the system operation process and the system multi-state reliability is applied to the reliability and risk evaluation of the container gantry crane. The container gantry crane is described and its operation process unknown parameters are identified on the basis of real statistical data. The mean values of the container gantry crane operation process unconditional sojourn times in particular operation states are found and applied to determining this process transient probabilities in these states. The container gantry crane different reliability structures in various its operation states are fixed and their conditional reliability functions on the basis of data coming from experts are approximately determined. Finally, after applying earlier estimated transient probabilities and system conditional reliability functions in particular operation states the unconditional reliability function, the mean values and standard deviations of the container gantry crane lifetimes in particular reliability states, risk function and the moment when the risk exceeds a critical value are found.
Źródło:: Journal of Polish Safety and Reliability Association; 2011, 2, 2; 453--464
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Monte Carlo simulation application to reliability assessment of an exemplary system operating at variable conditions
Autorzy:: Kołowrocki, K.
Kuligowska, E.
Soszyńska-Budny, J.
Powiązania:: https://bibliotekanauki.pl/articles/2069213.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system reliability
system operation process
Monte Carlo simulation approach
Opis:: A semi-Markov process is applied to construct the multistate model of the system operation process and its main characteristics are determined. Analytical linking of the system operation process model with the system multistate reliability model is proposed to get a general reliability model of the complex system operating at varying in time operation conditions and to find its reliability characteristics. The Monte Carlo simulation algorithm based on the integrated general model of a complex multistate system reliability, linking its reliability model and its operation process model and considering variable at different operation states its reliability structure and its components reliability parameters is applied to the reliability evaluation of an exemplary system. Next the results of this simulation method application are illustrated and compared with the results obtained by the analytical method.
Źródło:: Journal of Polish Safety and Reliability Association; 2015, 6, 1; 137--144
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Preliminary reliability, risk and availability analysis and evaluation of bulk cargo transportation system in variable operation conditions
Autorzy:: Kołowrocki, K.
Kwiatuszewska-Sarnecka, B.
Soszyńska, J.
Powiązania:: https://bibliotekanauki.pl/articles/2069686.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system operation process
multi-state system
reliability
risk
availability
Opis:: In the paper, definitions and theoretical results on system operations process, multi-state system reliability, risk and availability modelling are illustrated by the example of their application to a bulk cargo transportation system operating in Gdynia Port Bulk Cargo Terminal. The bulk cargo transportation system is considered in varying in time operation conditions. The system reliability structure and its components reliability functions are changing in variable operation conditions. The system reliability structures are fixed with a high accuracy. Whereas, the input reliability characteristics of the bulk cargo transportation system components and the system operation process characteristics are not sufficiently exact because of the lack of statistical data. Anyway, the obtained evaluation may be a very useful example in simple and quick systems reliability characteristics evaluation, especially during the design and improving the transportation systems operating in ports.
Źródło:: Journal of Polish Safety and Reliability Association; 2009, 1; 179--188
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: Integrated software tools supporting decision making on identification, prediction and optimization of complex technical systems operation, reliability and safety. Part 2. Integrated software tools application – Exemplary system operation and reliability unknown parameters identification
Autorzy:: Blokus-Roszkowska, A.
Kołowrocki, K.
Fu, X.
Powiązania:: https://bibliotekanauki.pl/articles/2069541.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system operation process
reliability parameters
identification
software tools
Opis:: There is presented the application of the integrated software tools to the operation and reliability models of an exemplary complex technical system unknown parameters identification. There are performed in the paper, the exemplary system operation and reliability analysis and modelling. The identification of the probabilities of transitions this system operation process between the operation states and the conditional mean values of this process sojourn times at the particular operation states because of the lack of statistical data is performed throw the arbitrary fixing their values assumption. Next using the computer program CP 8.3 the automatic evaluation of the system components unknown intensities of departures the reliability state subsets and the identification of the exponential forms of their multistate reliability functions on the arbitrarily fixed statistical data coming from the system components states changing processes are performed as well.
Źródło:: Journal of Polish Safety and Reliability Association; 2011, 2, 2; 279--288
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Testing uniformity of statistical data from complex technical systems operation processes
Autorzy:: Soszyńska, J.
Kołowrocki, K.
Blokus-Roszkowska, A.
Guze, S.
Powiązania:: https://bibliotekanauki.pl/articles/2069637.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system operation
statistical data
uniformity testing
maritime transport
Opis:: There is presented the contents of the training course addressed to industry. The curriculum of the course includes the methods and procedures for testing the uniformity of the statistical data collected from the operation process of the complex technical system in different experiments and their application in practice. It is based on theoretical backgrounds concerned with the semi-markov modeling of the complex technical systems operation processes and on the statistical methods of uniformity testing data of two samples coming from the complex technical system operation process. The illustration of the proposed methods and procedures practical application in maritime transport is included.
Źródło:: Journal of Polish Safety and Reliability Association; 2010, 1, 2; 329--342
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 11.

Tytuł:: Premises for a practical computer-aided parametric method of evaluation of the technical object reliability
Autorzy:: Borowczyk, H.
Lindsted, P.
Manerowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/242420.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
reliability
diagnostics
computer-aided method
system operation
Opis:: This work presents a practical and effective method to evaluate the reliability status of an object basing on the observation ofchanges in its functioning (automatics) and its technical condition (diagnostics). It has been observed that changes of the functioning condition potential could serve to determine the symptoms of transient (momentary) damages and the changes in the potential of the technical condition to determine the symptoms of parametric damages (non-total). Such an information, as it turns out, is sufficient to calculate reliability characteristics before dangerous catastrophic damages occur and to calculate reliability characteristics for every single object without having to deal with a numerous set of objects. The presented computer-aided method can be of a substantial practical importance in coordination of adjusting/control functions, diagnostics and reliability actions and thanhs to that it can improve the level of organisation of a system operati
Źródło:: Journal of KONES; 2009, 16, 2; 29-37
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 12.

Tytuł:: Analysis of system operation process influence on its reliability
Autorzy:: Kuligowska, E.
Powiązania:: https://bibliotekanauki.pl/articles/2069392.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system reliability
system operation process
analytical approach
Monte Carlo simulation
Opis:: The paper presents analytical and Monte Carlo simulation methods applied to the reliability evaluation of a system operating in two different operation states. A semi-Markov process is applied to construct the system operation model and its main characteristics are determined. Analytical linking of this operation model with the system reliability model is proposed to get a general reliability model of the system operating at two varying in time operation conditions and to find its reliability characteristics. The application of Monte Carlo simulation based on this general model to the reliability evaluation of this system is proposed as well. The exemplary results obtained from those two considered methods are illustrated.
Źródło:: Journal of Polish Safety and Reliability Association; 2014, 5, 1; 125--135
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 13.

Tytuł:: Complex technical systems safety prediction
Autorzy:: Soszyńska-Budny, J.
Powiązania:: https://bibliotekanauki.pl/articles/2069501.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: safety function
complex system
Semi-Markov process
system operation process
Opis:: There are presented general safety analytical models of complex multistate technical systems related to their operation processes. They are the integrated general models of complex technical systems, linking their multistate safety models and their operation processes models and considering variable at the different operation states safety structures and their components safety parameters. The conditional safety functions at the system particular operation states and independent of the system particular operation states the unconditional safety function and the risk function of the complex technical systems are defined. These joint models of the safety and the variable in time system operation processes are constructed for multistate series, parallel, “m out of n”, consecutive “m out of n: F”, series-parallel, parallel-series, series-“m out of k”, “mi out of li”-series, series-consecutive “m out of k: F” and consecutive “mi out of li: F”-series systems. The joint models are applied to determining safety characteristics of these systems related to their varying in time safety structures and their components safety characteristics. Under the assumption that the considered systems are exponential, the unconditional safety functions of these systems are determined. The proposed models and methods are applied to the safety analysis, evaluation and prediction of the one subsystem of the port grain transportation system related to varying in time their operation processes, structures and components safety parameters.
Źródło:: Journal of Polish Safety and Reliability Association; 2014, 5, 2; 127--142
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 14.

Tytuł:: Integrated software tools supporting decision making on identification, prediction and optimization of complex technical systems operation, reliability and safety. Part 3. Integrated software tools application – Exemplary system operation and reliability characteristics prediction
Autorzy:: Blokus-Roszkowska, A.
Kołowrocki, K.
Fu, X.
Powiązania:: https://bibliotekanauki.pl/articles/2069549.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system operation process
reliability characteristics
availability
prediction
software tools
Opis:: There is presented the application of the integrated software tools to the operation and reliability of an exemplary complex technical system prediction. The computer program CP 8.5 is used to determine the unconditional mean sojourn times and the limit transient probabilities of the exemplary system operation process at the particular operation states evaluations. Using the computer program CP 8.6 there are performed the evaluations of the exemplary system unconditional multistate reliability function, the expected values and the standard deviations of its unconditional lifetimes in the reliability state subsets and the mean values of its lifetimes in the particular reliability states. Finally, in the case when the system is repairable, its renewal and availability characteristics are estimated from the results of computer program CP 8.8.
Źródło:: Journal of Polish Safety and Reliability Association; 2011, 2, 2; 289--296
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 15.

Tytuł:: Identification of complex technical systems operation processes (part 2)
Autorzy:: Soszyńska, J.
Kołowrocki, K.
Blokus-Roszkowska, A.
Guze, S.
Powiązania:: https://bibliotekanauki.pl/articles/2069634.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system operation
semi-markov process
statistical identification
transportation systems
Opis:: There is presented the contents of the training course addressed to industry. The curriculum of the course includes the methods, algorithms and procedures for identification of the unknown parameters of the operations processes of the complex technical systems and their application in practice. It is based on theoretical backgrounds concerned with the semi-markov modelling of the complex technical systems operations processes, the statistical methods of identification of the complex technical systems operation processes. The illustrations of the proposed methods and procedures practical application in port, shipyard and maritime transport sector are included.
Źródło:: Journal of Polish Safety and Reliability Association; 2010, 1, 2; 309--328
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 16.

Tytuł:: Identification of complex technical systems operation processes
Autorzy:: Soszyńska, J.
Kołowrocki, K.
Blokus-Roszkowska, A.
Guze, S.
Powiązania:: https://bibliotekanauki.pl/articles/2069640.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system operation
semi-Markov process
statistical identification
transportation systems
Opis:: There is presented the contents of the training course addressed to industry. The curriculum of the course includes the methods, algorithms and procedures for identification of the unknown parameters of the operations processes of the complex technical systems and their application in practice. It is based on theoretical backgrounds concerned with the semi-markov modelling of the complex technical systems operations processes, the statistical methods of identification of the complex technical systems operation processes. The illustrations of the proposed methods and procedures practical application in port, shipyard and maritime transport sector are included.
Źródło:: Journal of Polish Safety and Reliability Association; 2010, 1, 2; 287--308
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 17.

Tytuł:: Preliminary statistical identification and prediction of the container gantry crane operation process
Autorzy:: Kołowrocki, K.
Soszyńska, J.
Powiązania:: https://bibliotekanauki.pl/articles/2069653.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: semi-Markov process
system operation process
sojourn time
estimation
Opis:: In the paper a Semi-markov process is used to construct a general model of complex industrial systems’ operation processes. Main parameters of this model are defined and its main characteristics are determined as well. In particular case, for a gantry crane, the operation states are defined, the relationships between them are fixed and particular model of its operation process is constructed and finally its main characteristics are determined.
Źródło:: Journal of Polish Safety and Reliability Association; 2010, 1, 1; 173--180
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 18.

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

Artykuł

Zmień widok

na półce

Skocz do pozycji: 19.

Tytuł:: A power constraint index to rank and group critical contingencies based on sensitivity factors
Autorzy:: Arenas-Crespo, O.
Candelo, J. E.
Powiązania:: https://bibliotekanauki.pl/articles/141453.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: contingency ranking
critical contingencies
power system operation
power system planning
sensitivity power factors
Opis:: Finding the most critical contingencies in a power system is a difficult task as multiple evaluations of load and generation scenarios are needed. This paper presents a mathematical formulation for selecting, ranking, and grouping the most critical N-1 net- work contingencies, based on the calculation of a Power Constraint Index (PCI) obtained from the Outage Transfer Distribution Factors (OTDF). The results show that the PCI is only affected by the impedance parameter of the transmission network, the topology, and the location of all generators. Other methods, such as the Performance Index (PI) and the Overload Index (OL) are affected by the power generation and demand variations. The proposed mathematical formulation can be useful to accelerate the calculation of other methods that evaluate contingencies in power system planning and operation. Furthermore, the fast calculation of indices makes it suitable for online evaluation and classification of multiple events considering the current topology. The results showed that the proposed algorithm easily selected and ranked the expected contingencies, with the highest values of the index corresponding to the most critical events. In the filtering process, the computational calculation time improved without losing the robustness of the results.
Źródło:: Archives of Electrical Engineering; 2018, 67, 2; 247--261
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 20.

Tytuł:: Methods and algorithms for evaluating unknown parameters of operation processes of complex technical systems
Autorzy:: Kołowrocki, K.
Soszyńska, J.
Powiązania:: https://bibliotekanauki.pl/articles/2069646.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system operation process
semi-Markov model
sojourn time
distribution
estimation
maritime transport
Opis:: The paper objectives are to present the methods and tools useful in the statistical identifying unknown parameters of the operation models of complex technical systems and to apply them in the maritime industry. There are presented statistical methods of determining unknown parameters of the semi-markov model of the complex technical system operation processes. There is also presented the chi-square goodness-of-fit test applied to verifying the distributions of the system operation process conditional sojourn times in the particular operation states. Applications of these tools to identifying and predicting the operation characteristics of a ferry operating at the Baltic Sea waters are presented as well.
Źródło:: Journal of Polish Safety and Reliability Association; 2009, 2; 211--222
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 21.

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

Artykuł

Zmień widok

na półce

Skocz do pozycji: 22.

Tytuł:: Integrated software tools supporting decision making on identification,prediction and optimization of complex technical systems operation,reliability and safety. Part 6. Integrated software tools application – Exemplary system operation cost analysis and maintenance optimization
Autorzy:: Blokus-Roszkowska, A.
Kołowrocki, K.
Salahuddin, H. M.
Powiązania:: https://bibliotekanauki.pl/articles/2069499.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: system operation process
optimization
cost analysis
corrective and preventive maintenance
software tools
Opis:: The integrated software tools are applied to the exemplary system operation cost analysis and maintenance optimization. Using the computer program CP 8.12 there is obtained the evaluation of the cost before and after the exemplary system operation process optimization and next the computer program CP 8.13 is applied for operation cost analysis of the improved exemplary system. The methods of corrective and preventive maintenance policy maximizing availability and minimizing renovation cost of the complex technical systems in variable operation conditions are illustrated for the analyzed exemplary system using equivalently the computer program CP 8.14 for maintenance policy maximizing system availability and CP 8.15 for minimizing system renovation cost.
Źródło:: Journal of Polish Safety and Reliability Association; 2011, 2, 2; 323--336
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 23.

Tytuł:: Problemy obsługi technicznej ciągników rolniczych na przykładzie województwa podkarpackiego
Problems of technical maintenance services of farm vehicles for example Podkarpackie province
Autorzy:: Juściński, S.
Chomik, Z.
Powiązania:: https://bibliotekanauki.pl/articles/239875.pdf
Data publikacji:: 2016
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: obsługa serwisowa
sprzedaż
ciągnik
sieć dealerska
system eksploatacji
service maintenance
sale
tractor
dealer network
system operation
Opis:: Na podstawie badań zrealizowanych w Firmie Handlowo Usługowej Zapałów przedstawiono funkcjonowanie obsługi technicznej ciągników marki Massey Ferguson i Fendt. Omówiono strukturę sieci dystrybucyjno-serwisowej w województwie podkarpackim w aspekcie obsługi technicznej ciągników rolniczych. Zaprezentowano analizę poziomu usług technicznych, wykonanych w FHU Zapałów w latach 2010–2013, podczas których prowadzono badania rynkowe. Badaniami dokumentacji warsztatowej objęto grupę 513 zleceń usług serwisowych, które były realizowane na terenie firmy, w gospodarstwach rolników oraz w warunkach polowych. Wyniki uzyskane z analizy danych wskazują na potrzebę optymalizacji działań w zakresie zarządzania obsługą serwisową. Głównym problemem dla firmy handlowo-usługowej jest okresowość popytu na części zamienne i obsługę techniczną, wynikająca z sezonowości prac agrotechnicznych.
Based on research carried out in the Company of Commerce and Service Zapałów, the functioning of the Massey Ferguson and Fendt’s tractors support service is shown in the article. The structure of distribution and service network in Podkarpackie province is discussed in the aspect of servicing tractors. The analysis of the level of servicing in the Company of Commerce and Service Zapałów for the years 2010–2013 during which market research was carried out is presented further. Research of workshop documentation covered a group of 513 commissions of servicing, which the company had executed both on farms and in fields. The results obtained from the data analysis show the need to optimise measures taken in servicing. The main problem for the commerce and service company is periodicity of demand for spare parts and the support service coming from the seasonality of the agricultural production.
Źródło:: Problemy Inżynierii Rolniczej; 2016, R. 24, nr 3, 3; 87-100
1231-0093
Pojawia się w:: Problemy Inżynierii Rolniczej
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 24.

Tytuł:: Energy storage systems: power grid and energy market use cases
Autorzy:: Komarnicki, P.
Powiązania:: https://bibliotekanauki.pl/articles/141507.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: storage technologies
storage system sizing
storage system operation
storage system management
storage system use case scenarios
storage system integration
Opis:: Current power grid and market development, characterized by large growth of distributed energy sources in recent years, especially in Europa, are according energy storage systems an increasingly larger field of implementation. Existing storage technologies, e.g. pumped-storage power plants, have to be upgraded and extended by new but not yet commercially viable technologies (e.g. batteries or adiabatic compressed air energy storage) that meet expected demands. Optimal sizing of storage systems and technically and economically optimal operating strategies are the major challenges to the integration of such systems in the future smart grid. This paper surveys firstly the literature on the latest niche applications. Then, potential new use case and operating scenarios for energy storage systems in smart grids, which have been field tested, are presented and discussed and subsequently assessed technically and economically.
Źródło:: Archives of Electrical Engineering; 2016, 65, 3; 495-511
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 25.

Tytuł:: The use of ultrasonic detectors in peripheral object protection for casement windows security
Zastosowanie ultradźwiękowych czujek ruchu w oknach typu skrzynkowego w ochronie peryferyjnego objektu
Autorzy:: Buczaj, M.
Powiązania:: https://bibliotekanauki.pl/articles/793391.pdf
Data publikacji:: 2013
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:: alarm system operation
peripheral object protection
hazard detection
signalling system
attack
protected object
ultrasound detector
window
security
Źródło:: Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2013, 13, 1
1641-7739
Pojawia się w:: Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "system operation" wg kryterium: Temat

Źródło danych

Dostawca treści

Podbaza

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język