Temat: safety reliability - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Semi-Markov decision process as a safety and reliability model of a sea transport operations
Autorzy:: Grabski, F.
Powiązania:: https://bibliotekanauki.pl/articles/2069650.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: safety reliability
semi-Markov decision process
transport operation
Opis:: A problem of optimization of a sea transport operation in safety and reliability aspect is discussed in the paper. To describe and solve this problem, a semi-Markov decision processes theory is applied. The semi-Markov decision process as a model of the sea transport operation is constructed. An algorithm which Allowi to compute the optimal strategy of the operation in safety and reliability aspect is presented.
Źródło:: Journal of Polish Safety and Reliability Association; 2010, 1, 1; 99--104
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Testing the integrated package of tools supporting decision making on identification, prediction and optimization of complex technical systems operation, reliability and safety. Part 1. Integrated Safety and Reliability Decision Support System – IS&RDSS
Autorzy:: Kołowrocki, K.
Soszyńska-Budny, J.
Ng, K. M.
Powiązania:: https://bibliotekanauki.pl/articles/2069515.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: reliability
safety
operation processes
availability
optimization
Opis:: The paper is composed of six parts and presents the main practical tool created in the scope of the PolandSingapore Joint Research Project, the Integrated Safety and Reliability Decision Support System - IS&RDSS. In the paper first part, there are presented the procedure of the IS&RDSS usage in the form of detailed and clear scheme-algorithm and the list of the project final reports and these reports supporting bibliography. In the remaining paper parts, there is presented the IS&RDSS application to the reliability analysis of an exemplary complex technical system.
Źródło:: Journal of Polish Safety and Reliability Association; 2011, 2, 2; 361--372
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Two various approaches to VTS Zatoka radar system reliability analysis
Autorzy:: Budny, T.
Powiązania:: https://bibliotekanauki.pl/articles/2069598.pdf
Data publikacji:: 2007
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: VTS system
system reliability
shipping safety
Opis:: In the paper we propose two ways of reliability calculation of radar system in Vessel Traffic Services Zatoka. Reliability and availability of the system were calculated on the base of reliability of the system components. In the first approach there was assumed that system is series, in the second approach system is treated as a series-“m out of n”. We obtain different results. Conclusion is that choosing proper method of approach to system reliability and availability analysis is decisive in appropriate evaluation of those properties.
Źródło:: Journal of Polish Safety and Reliability Association; 2007, 1; 39--43
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Methods and algorithms for evaluating unknown parameters of components reliability of complex technical systems
Autorzy:: Kołowrocki, K.
Soszyńska, J.
Powiązania:: https://bibliotekanauki.pl/articles/2069673.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: reliability
safety
lifetime
distribution
estimation
maritime transport
Opis:: The paper objectives are to present the methods and tools useful in the statistical identifying the unknown parameters of the components reliability and safety of complex industrial systems and to apply them in the maritime industry. There are presented statistical methods of estimating the unknown intensities of departure from the reliability state subsets of the exponential distribution of the component lifetimes of the multistate systems operating in various operation states. The goodness-of-fit method applied to testing the hypotheses concerned with the exponential form of the multistate reliability function of the particular components of the complex technical system in variable operations conditions is suggested. An application of these tools to reliability characteristics of a ferry operating at the Baltic Sea waters is presented as well.
Źródło:: Journal of Polish Safety and Reliability Association; 2009, 2; 223--230
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Reliability, availability and safety of complex technical systems : modelling – identification – prediction – optimization
Autorzy:: Kołowrocki, K.
Soszyńska, J.
Powiązania:: https://bibliotekanauki.pl/articles/2069542.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: reliability
safety
multistate system
operation process
complex system
Opis:: There is presented a practically well grounded approach concerned with the identification, evaluation, prediction and optimization of reliability, availability and safety of technical systems related to their operation processes. The main emphasis of this approach is on multi-state systems composed of ageing components and changing during the operation processes their structures and their components reliability and safety characteristics. There are proposed the convenient tools for analyzing these systems in the form of semi-markov modeling the systems’ operation processes and multistate modeling the systems’ reliability. There are described theoretical results of the proposed approach to reliability and safety analysis of multistate systems with degrading components in their operation processes and the possibility of their practical applications to the reliability and safety analysis and optimization of the complex technical port and maritime transportation systems.
Źródło:: Journal of Polish Safety and Reliability Association; 2010, 1, 1; 133--158
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Bayesian approach to shipping reliability and safety
Autorzy:: Smolarek, L.
Powiązania:: https://bibliotekanauki.pl/articles/2069249.pdf
Data publikacji:: 2012
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: reliability
safety
shipping
hierarchical Bayes model
prior model
Opis:: In a Bayesian approach, there are two main sources of information about parameters of interest such as prior beliefs or the prior distribution of the parameter and the likelihood of observing the data given our expectations about the parameter. The prior distribution may be based on previous studies, literature reviews or expert opinions and indicates how we believe the parameter would behave if we had no data upon which to base our judgments. In case where we have less data, the prior has greater influence. The maximum likelihood estimate predominates only when we have a lot of data. The posterior distribution is the result of combining the prior distribution and the likelihood. In the paper the examples of using Bayes approach to shipping operational reliability and safety is presented.
Źródło:: Journal of Polish Safety and Reliability Association; 2012, 3, 2; 227--236
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Nash-lambda algorithm with applications in safety and reliability
Autorzy:: Cui, Y.
Guo, R.
Powiązania:: https://bibliotekanauki.pl/articles/2069567.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: lambda algorithm
Nash equilibrium
genetic algorithm
safety
reliability
terrorist threa
Opis:: In this paper, a new algorithm, named as Nash-lambda algorithm by merging Nash equilibrium solution and the lambda algorithm, is proposed. The lambda algorithm, a new global optimization algorithm, is created by imitating ancient Chinese human body system model, which has already demonstrated its simplicity in searching scheme, codes and efficiency in computation comparing to the genetic algorithm. The noncorporative game environments determine the optimization problems which are different from those of the traditional safety and reliability optimizations because of the engagement of the Nash equilibrium for seeking the best strategy. The lambda algorithm serves the searching the Nash equilibrium solution efficiently. In other worlds, the Nash-lambda algorithm is just developed to address the optimization problems of the multiple objective functions representing non-corporative players’ interests.
Źródło:: Journal of Polish Safety and Reliability Association; 2011, 2, 1; 51--58
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Safety of some homogeneous series-„k out of n” systems
Autorzy:: Milczek, B.
Powiązania:: https://bibliotekanauki.pl/articles/2068738.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: large systems
safety of large systems
asymptotic approach
limit reliability function
Opis:: In the reliability investigation of large-scale systems, the problem of the complexity of their safety functions arises. This problem may be approximately solved by assuming that the number of system components tends to infinity and finding the limit safety function of the system. The problem of finding the limit reliability function of large-scale systems is well known for basic two-state systems (Gnedenko for series and parallel systems [1], Smirnov for “k out of n” systems [8]). The problem of possible limit reliability functions for series-parallel and parallel-series is also well recognized [3]. The solution for two-state series-“k out of n” systems, while k/n→0 and also while k/n→1 can be found in [5] and [6]. The paper is concerned with mathematical methods in multistate asymptotic approach to series-“k out of n” systems safety and shows the methods of establishing its possible limit safety functions, while k/n→ λ, 0˂ λ˂ 1.
Źródło:: Journal of Polish Safety and Reliability Association; 2018, 9, 3; 115--120
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Methodological issues of functional safety and reliability assessment of critical systems in industrial hazardous plants
Autorzy:: Kosmowski, K. T.
Powiązania:: https://bibliotekanauki.pl/articles/2069067.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: hazardous plants
control systems
functional safety
security
human factors
human reliability
Opis:: The aim of this article is to identify and discuss some methodological issues that are of interest among functional safety specialists and experts after publication of the second edition of international standards IEC 61508 and IEC 61511, including the design and implementing the safety-related functions of higher safety integrity levels and protection layers. The basic role of safety-related systems is to reduce effectively and to control in time the individual and/or societal risk with regard to its tolerable levels. These issues include: risk criteria, reliability data, probabilistic models of systems operating in high and/or low mode, dependent failures, human reliability analysis, security of programmable safety-related systems, and reducing uncertainty issues in decision making process applying the cost-benefit analysis. Selected aspects of these issues are discussed and some challenges requiring further research are indicated.
Źródło:: Journal of Polish Safety and Reliability Association; 2015, 6, 2; 59--70
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Safety of multistate series-„k out of n” systems
Autorzy:: Milczek, B.
Powiązania:: https://bibliotekanauki.pl/articles/2068728.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: large systems
safety of large systems
asymptotic approach
limit reliability function
Opis:: The paper is concerned with mathematical methods in asymptotic approach to systems safety and reliability analysis. In the safety investigation of large-scale systems, the problem of the complexity of their safety functions arises. This problem may be approximately solved by assuming that the number of system components tends to infinity and finding the limit safety function of the system. The article is based on the results of the author’s solutions for series-“m out of kn” given in [4] – [6].
Źródło:: Journal of Polish Safety and Reliability Association; 2018, 9, 3; 121--126
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Cognitive engineering and functional safety technology for reducing risks in hazardous plants
Autorzy:: Kosmowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/2068937.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: cognitive science
cognitive systems engineering
human factors
human reliability
functional safety
Opis:: Cognitive engineering is considered nowadays as interesting multidisciplinary domain that focuses on improving the relations between humans and the systems that are supervised and operated. The industrial automation and control systems (IACS) in hazardous plants are increasingly computerized and perform various safety functions. These are designed and implemented according to the functional safety concept. The objective is to maintain high performance / productivity and reduce various risks related to identified hazards and threats. An approach is proposed to apply selected cognitive engineering methods for verifying the design of the functional safety technology implemented in given hazardous plant in context of defined safety functions, operator interfaces, communication means and procedures. The methodology developed might be applied for functional safety management in life cycle of industrial hazardous plants and oil port terminals.
Źródło:: Journal of Polish Safety and Reliability Association; 2017, 8, 1; 73--86
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Applicable technologies to forecast, analyze and optimize reliability and risks for complex systems
Autorzy:: Kostogryzov, A.
Nistratov, G.
Nistratov, A.
Powiązania:: https://bibliotekanauki.pl/articles/2069444.pdf
Data publikacji:: 2012
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: analysis
forecasting
model
quality
reliability
risk
safety
software tools
system engineering
technology
Opis:: The paper is concerned with the application of the original mathematical models and supporting them software technologies to forecast, analyze and optimize reliability and risks for complex systems (system is defined as a combination of interacting elements organized to achieve one or more stated purposes). Functionality and usability to analyze information system processes and standard processes in system life cycle are presented. Rational use of the proposed results allows to go «from a pragmatical filtration of information to generation of the proved ideas and effective decisions». Effects are demonstrated by examples.
Źródło:: Journal of Polish Safety and Reliability Association; 2012, 3, 1; 1--14
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Monte Carlo simulation-based reliability model for the PSA of a radioactive waste repository
Autorzy:: Cadini, F.
Avram, D.
Zio, E.
Luce, A.
Taglioni, A.
Powiązania:: https://bibliotekanauki.pl/articles/2069572.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: radioactive waste repository
probabilistic safety assessment
reliability-based model
Monte Carlo simulation
Opis:: Disposal facilities for radioactive wastes comprise a series of engineered barriers whose purpose is to contain the radionuclides until their radiation hazard has decreased to acceptable levels. In this regard, it is required that the long-term functionality of the system of barriers be evaluated by a quantitative risk analysis procedure, also called performance assessment. In this paper, a Monte Carlo simulation-based reliability model is propounded for the preliminary analysis of the safety performance of a radioactive waste repository, accounting also for barrier degradation processes. The model strengths are: simplicity, chich allows ease of computation, and flexibility, which allows modification to account for various physical aspects and inter-comparison of their effects. An application to a case study of literature is presented to validate the approach and demonstrate its flexibility.
Źródło:: Journal of Polish Safety and Reliability Association; 2010, 1, 1; 43--50
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Modelling the ship safety on waterway according to navigational signs reliability
Autorzy:: Guze, S.
Smolarek, L.
Powiązania:: https://bibliotekanauki.pl/articles/2069700.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: safety
consecutive “m out of k” systems
reliability
navigational signs
IALA buoyage system
Opis:: An approach to safety analysis connected with consecutive “m out of n” systems is presented. Further, the consecutive “m out of n: G” system is defined and the recurrent formula for its reliability function evaluation are proposed. Next the IALA buoys and leading lights system are introduced. Moreover, the safety states model for ship navigation are defined. Further, analysis of safety during manoeuvre in restricted area with curved draws is illustrated.
Źródło:: Journal of Polish Safety and Reliability Association; 2009, 1; 139--144
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Zarządzanie jakością i niezawodnością oprogramowania w systemach związanych z bezpieczeństwem
Software quality and reliability management in safety-related systems
Autorzy:: Porzeziński, M.
Powiązania:: https://bibliotekanauki.pl/articles/2069725.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: jakość oprogramowania
niezawodność oprogramowania
bezpieczeństwo funkcjonalne
systemy związane z bezpieczeństwem
software quality
software reliability
functional safety
safety-related systems
Opis:: This article is concerned with the methods of ensuring the required quality and reliability of software in safetyrelated systems. The basic types of software reliability models and their specific properties are presented. The principles of managing the process of software development, based on the "Model V" life cycle, with particular emphasis on the role of inspection and testing processes are discussed. Also the methodology of quality management and reliability of the software recommended by the PN-EN 61508-3 are outlined. At the end the concept of application to support the process of assessing the quality and integrity of the safety-related software is described.
Źródło:: Journal of Polish Safety and Reliability Association; 2011, 2, 3; 45--52
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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