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Dissertations / Theses on the topic 'Model of reliability assessment'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Williamson, Jamie D. "Reliability of the Brief Assessment Model." Miami University / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=miami1101994832.

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2

Moon, Min-Yeong. "Confidence-based model validation for reliability assessment and its integration with reliability-based design optimization." Diss., University of Iowa, 2017. https://ir.uiowa.edu/etd/5816.

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Conventional reliability analysis methods assume that a simulation model is able to represent the real physics accurately. However, this assumption may not always hold as the simulation model could be biased due to simplifications and idealizations. Simulation models are approximate mathematical representations of real-world systems and thus cannot exactly imitate the real-world systems. The accuracy of a simulation model is especially critical when it is used for the reliability calculation. Therefore, a simulation model should be validated using prototype testing results for reliability anal

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3

Hernandez, Hernandez Erika. "SEGMENT-BASED RELIABILITY ASSESSMENT FOR WATER DISTRIBUTION NETWORKS." UKnowledge, 2017. https://uknowledge.uky.edu/ce_etds/59.

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In recent years, water utilities have placed a greater emphasis on the reliability and resilience of their water distribution networks. This focus has increased due to the continuing aging of such infrastructure and the potential threat of natural or man-made disruptions. As a result, water utilities continue to look for ways to evaluate the resiliency of their systems with a goal of identifying critical elements that need to be reinforced or replaced. The simulation of pipe breaks in water reliability studies is traditionally modeled as the loss of a single pipe element. This assumes that eac

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4

Zhao, Liang. "Reliability-based design optimization using surrogate model with assessment of confidence level." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/1194.

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The objective of this study is to develop an accurate surrogate modeling method for construction of the surrogate model to represent the performance measures of the compute-intensive simulation model in reliability-based design optimization (RBDO). In addition, an assessment method for the confidence level of the surrogate model and a conservative surrogate model to account the uncertainty of the prediction on the untested design domain when the number of samples are limited, are developed and integrated into the RBDO process to ensure the confidence of satisfying the probabilistic constraints

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Lyons, Melinda. "Evaluation of a task performance resource constraint model to assess the impact of offshore emergency management on risk reduction." Thesis, Cranfield University, 2000. http://dspace.lib.cranfield.ac.uk/handle/1826/4056.

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In this age of safety awareness, technological emergencies still happen, occasionally with catastrophic results. Often human intervention is the only way of averting disaster. Ensuring that the chosen emergency managers are competent requires a combination of training and assessment. However, assessment currently relies on expert judgement of behaviour as opposed to its impact on outcome, therefore it would be difficult to incorporate such data into formal Quantitative Risk Assessments (QRA). Although there is, as yet, no suitable alternative to expert judgement, there is a need for methods of

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6

Zhuang, Xing. "A New Reliability Assessment Model for Power Electronic Modules Considering Failure Mechanism Interaction." Thesis, North Dakota State University, 2015. https://hdl.handle.net/10365/27615.

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A reliability prediction method is proposed to determine the lifetime of IGBTs (Insulated Gate Bipolar Transistors) under power cycling test based on the performance of solder joint and wire bond. The failure characteristics of solder joint and wire bond are captured via selected PoF model respectively. To provide precise reliability prediction, PoF models are converted into probabilistic models. In addition, the failure interaction between wire bond and solder joint is studied. Wire bond lift-off is treated as the predominant failure mode based upon experiments from literature and solder join

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7

Gil, Sagás Esteban Manuel. "Integrated network flow model for a reliability assessment of the national electric energy system." [Ames, Iowa : Iowa State University], 2007.

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8

Tiassou, Kossi Blewoussi. "Aircraft operational reliability : A model-based approach and case studies." Thesis, Toulouse, INSA, 2013. http://www.theses.fr/2013ISAT0012/document.

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Lors de la conception des avions, il est courant que les constructeurs évaluent la sûreté de fonctionnement en utilisant des modèles stochastiques, mais l'évaluation de la fiabilité opérationnelle à l’aide de modèles en ligne, pendant la réalisation des missions, reste rarement effectuée. Souvent, l'évaluation stochastique concerne la sécurité des avions. Cette thèse porte sur la modélisation de la fiabilité opérationnelle des avions, pour aider à la planification des activités de maintenance et des missions, ainsi qu’à la bonne réalisation de ces dernières. Nous avons développé une approche d

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9

Bakouros, Y. L. "Offshore pipeline reliability prediction : An assessment of the breakdown characteristics of offshore pipelines and the development of a statistical technique to improve their reliability prediction with particular reference." Thesis, University of Bradford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233657.

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10

Buhari, Muhammad. "Reliability assessment of ageing distribution cable for replacement in 'smart' distribution systems." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/reliability-assessment-of-ageing-distribution-cable-for-replacement-in-smart-distribution-systems(e253c774-b5e3-4872-9139-894e7df553f0).html.

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Majority of electricity networks have growing number of ageing elements. Critical network components, such as ageing underground cables, are very expensive to install and disruptive to replace. On the other hand, global climate changes have made connection of new low carbon technologies (LCT) into the grids increasingly necessary. These factors are contributing to the increasing complexity of the planning and management of power systems. Numerous techniques published on this subject tend to ignore the impact of LCT integration and the anchoring ꞌSmartꞌ solutions on ageing network assets, such

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11

Smith, William B. "Early component-based reliability assessment using UML based software models." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2634.

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Thesis (M.S.)--West Virginia University, 2002.<br>Title from document title page. Document formatted into pages; contains vii, 62 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 26-27).

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12

Ha, Taesung Garland W. J. "Probabilistic risk assessment for a loss of coolant accident in McMaster Nuclear Reactor and application of reliability physics model for modeling human reliability." *McMaster only, 2006.

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13

Yang, Fang. "A Comprehensive Approach for Bulk Power System Reliability Assessment." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14488.

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Abstract The goal of this research is to advance the state of the art in bulk power system reliability assessment. Bulk power system reliability assessment is an important procedure at both power system planning and operating stages to assure reliable and acceptable electricity service to customers. With the increase in the complexity of modern power systems and advances in the power industry toward restructuring, the system models and algorithms of traditional reliability assessment techniques are becoming obsolete as they suffer from nonrealistic system models and slow convergence (even non

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Allahvirdizadeh, Reza. "Reliability-Based Assessment and Optimization of High-Speed Railway Bridges." Licentiate thesis, KTH, Bro- och stålbyggnad, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-301318.

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Increasing the operational speed of trains has attracted a lot of interest in the last decades and has brought new challenges, especially in terms of infrastructure design methodology, as it may induce excessive vibrations. Such demands can damage bridges, which in turn increases maintenance costs, endangers the safety of passing trains and disrupts passenger comfort. Conventional design provisions should therefore be evaluated in the light of modern concerns; nevertheless, several previous studies have highlighted some of their shortcomings. It should be emphasized that most of these studies

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15

Crawley, P. D. "Risk and reliability assessment of multiple reservoir water supply headworks systems /." Title page, contents and synopsis only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phc911.pdf.

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16

Caycho-Rodríguez, Tomás, José M. Tomás, Miguel Barboza-Palomino, et al. "Assessment of Fear of COVID-19 in Older Adults: Validation of the Fear of COVID-19 Scale." Springer, 2021. http://hdl.handle.net/10757/655711.

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There is no information in Peru on the prevalence of mental health problems associated with COVID-19 in older adults. In this sense, the aim of the study was to gather evidence on the factor structure, criterion-related validity, and reliability of the Spanish version of the Fear of COVID-19 Scale (FCV-19S) in this population. The participants were 400 older adults (mean age = 68.04, SD = 6.41), who were administered the Fear of COVID-19 Scale, Revised Mental Health Inventory-5, Patient Health Questionnaire-2 items, and Generalized Anxiety Disorder Scale 2 items. Structural equation models wer

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Shmerling, Robert Zachary. "STRUCTURAL CONDITION ASSESSMENT OF PRESTRESSED CONCRETE TRANSIT GUIDEWAYS." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3529.

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Objective condition assessment is essential to make better decisions for safety and serviceability of existing civil infrastructure systems. This study explores the condition of an existing transit guideway system that has been in service for thirty-five years. The structural system is composed of six-span continuous prestressed concrete bridge segments. The overall transit system incorporates a number of continuous bridges which share common design details, geometries, and loading conditions. The original analysis is based on certain simplifying assumptions such as rigid behavior over support

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Elerath, Jon Garrett. "Reliability model and assessment of redundant arrays of inexpensive disks (RAID) incorporating latent defects and non-homogeneous Poisson process events." College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/6733.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.<br>Thesis research directed by: Mechanical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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19

Andrews, Curtis Kyo-shin. "Validity and Reliability of Peer Assessment Rating Index Scores of Digital and Plaster Models." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1208136018.

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20

Mukhametzianova, Leisan. "Vliv lidského činitele na bezpečnost průmyslových pecí." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-399208.

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The presented doctoral thesis is focused on assessment of human factor impact on safety of industrial furnaces. Industrial furnaces are classified as machinery and belong to a group of industrial thermal equipment. The operation of industrial furnaces is burdened with the risks which the manufacturers and the furnace operators realize. The first part of the thesis presents an analysis of the current situation of legislation and scientific knowledges in the field of assessment of human factor impact on safety of industrial furnaces. In this part of the thesis the issue of human factor in other

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Du, Plessis Minette. "The validity and reliability of the General Child Assessment model as pre-forensic screening instrument for children between three and five years old." Thesis, North-West University, 2012. http://hdl.handle.net/10394/9013.

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The forensic assessment of young children is a difficult and often daunting task for professionals working in the field of child sexual abuse. A forensic assessment with pre-school children requires that the professional have knowledge of various aspects of the children themselves and the disclosure of abuse, and remain as neutral and objective as possible while conducting the assessment. Literature indicates that the knowledge of the child’s social, behavioural and developmental level is essential in order to conduct a developmental sensitive forensic interview. Although the term “pre-forensi

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Schaefer, Sandra M. "An Assessment of Methods for Testing the Reliability of Wildlife Occurrence Models Used in Gap Analysis." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/SchaeferSM2002.pdf.

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23

Zhao, Xiaoyun. "Road network and GPS tracking with data processing and quality assessment." Licentiate thesis, Högskolan Dalarna, Mikrodataanalys, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:du-17354.

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GPS technology has been embedded into portable, low-cost electronic devices nowadays to track the movements of mobile objects. This implication has greatly impacted the transportation field by creating a novel and rich source of traffic data on the road network. Although the promise offered by GPS devices to overcome problems like underreporting, respondent fatigue, inaccuracies and other human errors in data collection is significant; the technology is still relatively new that it raises many issues for potential users. These issues tend to revolve around the following areas: reliability, dat

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Favaretto, Chiara. "Development of a model for the assessment of Coastal Flooding Vulnerability: an application to the Venetian littoral." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3424876.

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In the recent years, marine flooding and its impacts have become a question of growing interest in the scientific community as well as in managing authorities, since coastal areas are the most heavily populated and developed land zones in the world. Under climate change, sea levels are rising and even storm surge intensity is possibly increasing. Therefore, it is expected that the occurrence probability of extreme coastal flooding events will increase. This major hazard requires urgent adaptations in order to increase the resistance and resilience of an area to coastal floods. The motivation

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25

Sims, Maureen Estelle. "Rubric Rating with MFRM vs. Randomly Distributed Comparative Judgment: A Comparison of Two Approaches to Second-Language Writing Assessment." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7312.

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The purpose of this study is to explore a potentially more practical approach to direct writing assessment using computer algorithms. Traditional rubric rating (RR) is a common yet highly resource-intensive evaluation practice when performed reliably. This study compared the traditional rubric model of ESL writing assessment and many-facet Rasch modeling (MFRM) to comparative judgment (CJ), the new approach, which shows promising results in terms of reliability and validity. We employed two groups of raters<&hyphen>”novice and experienced<&hyphen>”and used essays that had been previously doubl

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CALLOU, Gustavo Rau de Almeida. "Assessment to support the planning of sustainable data centers with high availability." Universidade Federal de Pernambuco, 2013. https://repositorio.ufpe.br/handle/123456789/12262.

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The advent of services such as cloud computing, social networks and e-commerce has led to an increased demand for computer resources from data centers. Prominent issues for data center designers are sustainability, cost, and dependability, which are significantly affected by the redundant architectures required to support these services. Within this context, models are important tools for designers when attempting to quantify these issues before implementing the final architecture. This thesis proposes a set of models for the integrated quantification of the sustainability impact, cost,

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27

Neluheni, Tshililo Sedney. "Exploring quality and assessment models for English first additional language in Grade 10." Diss., University of Pretoria, 2011. http://hdl.handle.net/2263/27630.

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This research aimed at exploring the quality assurance and assessment models used for English First Additional language (EFAL) in the Further Education and Training (FET) band especially in Grade 10. It examined various quality assurance models used by grade 10 educators in designing the assessment tasks, with specific reference to EFAL. This study adopted the industry based SABS ISO 9004-2 conceptual framework. This conceptual framework ensures that the task to be performed and the objectives to be achieved are clearly spelt out, including how they affect quality. A qualitative research appro

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Hofer, Lorenzo. "Loss assessment models for seismic risk mitigation in structures." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3424961.

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Seismic risk can be defined as an inclusive term that encompasses the probability of different ground motions and the related consequences, depending on the structural vulnerability. Seismic risk analysis is a general procedure that usually can consider different indicators, for both a specific structure or at territorial level: among others, for civil structures, risk is expressed in terms of monetary losses, i.e. costs to be sustained for repairing seismic damage or loss of revenue. This work wants to contribute to the current seismic risk assessment approaches with original contributions to

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29

Xu, Changyi. "Operational dependability model generation." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI129.

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L'objectif à long terme des ingénieurs et des chercheurs est d'évaluer la fiabilité des systèmes industriels complexes. Les évaluations de la sécurité fondées sur des modèles effectuées ces dernières années, en particulier les études d'analyse structurelle et de modélisation des composants, fournissent des méthodes pratiques d'évaluation de la fiabilité,Toutefois, l'absence d'un cadre permettant d'évaluer simultanément la structure et les comportements des différents éléments d'un modèle unifié n'a pas permis d'obtenir d'excellentes évaluations. En outre, les opérations du système n'étant pas

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30

Yajima, Ayako. "Assessment of Soil Corrosion in Underground Pipelines via Statistical Inference." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1435602696.

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31

Wallnerström, Carl Johan. "On Risk Management of Electrical Distribution Systems and the Impact of Regulations." Licentiate thesis, KTH, Electromagnetic Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4717.

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<p>The Swedish electricity market was de-regulated in 1996, followed by new laws and a new regulation applied to the natural monopolies of electrical distribution systems (EDS). These circumstances have motivated distribution systems operators (DSOs) to introduce more comprehensive analysis methods. The laws, the regulation and additional incentives have been investigated within this work and results from this study can be valuable when developing risk methods or other quantitative methods applied to EDS. This tendency is not unique for Sweden, the results from a comparative study of customer

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Cuxart, i. Jardí Anna. "Models estadístics en avaluació educativa: les proves d'accés a la universitat." Doctoral thesis, Universitat Politècnica de Catalunya, 1998. http://hdl.handle.net/10803/6528.

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La tesis se inscribe en un doble ámbito científico formado por la Estadística y la Pedagogía. El objetivo de la tesis es la investigación de modelos estadísticos y estrategias de análisis que puedan ser de utilidad en el seguimiento de sistemas de evaluación complejos. Su motivación se encuentra en la necesidad de analizar las Pruebas de Aptitud para el Acceso a la Universidad (PAAU), que regulan el acceso a la universidad en España, desde la perspectiva de la ciencia estadística. La validez y fiabilidad de los exámenes COU (Curso de Orientación Universitaria) y PAAU han merecido una atenció

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33

Moravej, Hans. "Vibration-based probabilistic model updating of civil structures using structural health monitoring techniques." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/203653/1/Hans%20Moravej%20Thesis.pdf.

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Information extracted from monitored data is susceptible to uncertainties and not reliable to be used for structural investigations. Finite element model updating (FEMU) is an accredited framework which aims to improve the accuracy of FEMs of real structures. However, FEMU faces barriers to achieving efficiency and addressing uncertainties. This study aims to develop a probabilistic approach based on Modular Bayesian approach (MBA) to address challenges in the application of FEMU. Moreover, this research proposes an integration between MBA and structural reliability analysis to assess the perf

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Pllana, Drilon, and Fredrik Lohman. "Självutvärderingsverktyget språngbrädan : En mixad studie om verktygets aktualitet inom offensiv kvalitetsutveckling." Thesis, Mittuniversitetet, Institutionen för kvalitets- och maskinteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-38811.

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Det primära syftet med studien var att undersöka hur ett medelstort företag upplever självutvärderingsverktyget språngbrädan. Syftet var också att bidra med kunskap om forskningsläget kring språngbrädan. En mixad metod användes där datainsamlingen genomfördes genom en enkät på ett urval av företaget. Första delen av enkäten utgjorde en lättversion av språngbrädan som användes för självutvärdering av verksamheten, därigenom fick respondenterna uppleva verktyget. Andra delen av enkäten utgjorde en utvärdering av hur språngbrädan upplevs, med både skalfrågor och öppna frågor. Resultatet visar att

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Cross, Richard J. (Richard John). "Inference and Updating of Probabilistic Structural Life Prediction Models." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19828.

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Aerospace design requirements mandate acceptable levels of structural failure risk. Probabilistic fatigue models enable estimation of the likelihood of fatigue failure. A key step in the development of these models is the accurate inference of the probability distributions for dominant parameters. Since data sets for these inferences are of limited size, the fatigue model parameter distributions are themselves uncertain. A hierarchical Bayesian approach is adopted to account for the uncertainties in both the parameters and their distribution. Variables specifying the distribution of the f

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Silva, Monia Aparecida da. "Construção e estudo de evidências de validade e fidedignidade do inventário dimensional de avaliação do desenvolvimento infantil." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/173315.

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A prevalência de crianças com atrasos no desenvolvimento em um ou mais domínios varia entre 16 e 18% na literatura, mas estima-se que apenas 30% dos casos são detectados pelos profissionais de saúde. Em parte, este déficit na detecção se deve à falta de utilização de instrumentos de avaliação ou rastreio. No contexto brasileiro são poucos os instrumentos disponíveis para avaliar desenvolvimento infantil e, além disso, os que existem apresentam limitações. A presente tese teve como objetivo construir o Inventário Dimensional de Avaliação do Desenvolvimento Infantil (IDADI) para avaliação de cri

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Kaya, Deniz. "Software Reliability Assessment." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606466/index.pdf.

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In spite of the fact that software reliability studies have attracted great deal of attention from different disciplines in 1970s, applications of the subject have rarely been involved in the software industry. With the rise of technological advances especially in the military electronics field, reliability of software systems gained importance. In this study, a company in the defense industries is inspected for their abilities and needs regarding software reliability, and an improvement proposal with metrics measurement system is formed. A computer tool is developed for the evaluation of the

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Руденко, Александр Антонович. "Вероятностные модели и методы оценивания надежности программных средств с учетом вторичных дефектов". Thesis, Полтавский национальный технический университет им. Ю. Кондратюка, 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/19065.

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Диссертация на соискание ученой степени кандидата технических наук по специальности 05.13.06 – информационные технологии – Национальный технический университет "Харьковский политехнический институт", Харьков, 2015. Диссертация посвящена разработке моделей, методов оценки надежности программно-технических комплексов, информационной технологии на основе учета внесения вторичных дефектов. Как показывает проведенный анализ, необходимость обеспечения точности оценки надежности программного обеспечения обуславливает актуальность научных исследований, посвященных разработке и совершенствованию мето

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Mafu, Masakheke. "Reliability analysis: assessment of hardware and human reliability." Thesis, Rhodes University, 2017. http://hdl.handle.net/10962/6280.

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Most reliability analyses involve the analysis of binary data. Practitioners in the field of reliability place great emphasis on analysing the time periods over which items or systems function (failure time analyses), which make use of different statistical models. This study intends to introduce, review and investigate four statistical models for modeling failure times of non-repairable items, and to utilise a Bayesian methodology to achieve this. The exponential, Rayleigh, gamma and Weibull distributions will be considered. The performance of the two non-informative priors will be investigat

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Руденко, Олександр Антонович. "Імовірнісні моделі та методи оцінювання надійності програмних засобів з урахуванням вторинних дефектів". Thesis, ТОВ "Фірма "Техсервіс", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/19064.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.13.06 – інформаційні технології – Національний технічний університет "Харківський політехнічний інститут", Харків, 2015. Дисертація присвячена розробці моделей, методів оцінювання надійності програмно-технічних комплексів, інформаційної технології на основі врахування внесення вторинних дефектів. Науковими результатами є: удосконалення імовірнісних моделей оцінки надійності програмних засобів на основі врахування параметрів вторинних дефектів шляхом модифікації функцій ризику цих моделей, що дозволяє адекват

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Kartali, Csaba. "Posouzeni spolehlivosti procesu výroby průmyslových bezpečnostních přileb." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-432518.

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The theoretical part of this master thesis lists all the necessary prerequisites which are needed in order to carry out a full and comprehensive reliability assessment of any given process. To do so it provides an overview of reliability in general, mathematical and statistical guidance together with a more detailed picture of the application and description of the process by quantifiable indicators. Furthermore it gives an overview of two important analysis tools, such as FTA and FMEA, accompanied by the basic principle and summary of the Six Sigma methodology and tools. The practical part of

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Pizzo, Walter Nogueira. "Avaliação da disponibilidade de sistemas computacionais críticos para o controle do espaço aéreo por meio de modelo analítico da teoria de filas." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-02102008-174430/.

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O transporte aéreo e a indústria de sistemas de defesa foram setores pioneiros na utilização de sistemas computacionais críticos, incrementando os níveis de automação nas atividades de controle do espaço aéreo. Com o crescimento desses setores, verificado pela expansão dos números de vôos, volumes de cargas e usuários, assim como pela ampliação e diversidade das operações militares, os sistemas de controle têm assumido maior complexidade técnica, introduzindo novos recursos de automação ou facilidades adicionais de apoio para funções exercidas manualmente. Essa situação tem ampliado a dependên

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Da, Silva Maria da Guia. "Reliability assessment of meshed distribution systems." Thesis, Cardiff University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493157.

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Stølen, Ellen Margrete. "RELIABILITY ASSESSMENT OF A SUBSEA HIPPS." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for produksjons- og kvalitetsteknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-24545.

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Safety instrumented systems are vital in the oil and gas industry. A SIS consists of input elements, a logic solver and final elements. A High Integrity Pressure Protection System is an example of such a system. HIPPS is installed to protect a platform from too high pressure by shutting off the source before exceeding the design pressure. The IEC 61508 and IEC 61511 are used in the oil and gas industry during all phases of a SIS lifecycle. As a measure of SIS reliability, both standards use safety integrity level. The standards lists several requirements for both hardware and software. Complia

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Alali, Dawood. "Probabilistic reliability assessment of transmission systems." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/88271/.

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Power system reliability is defined as the ability of a power system to perform its function of maintaining supply without allowing network variables (e.g. voltage, component loading and frequency) to stray too far from the standard ranges. Traditionally over many decades, reliability has been assessed using deterministic criteria, e.g., ‘N-1’ or ‘N-2’ standards under prescribed severe system demand levels. However, using the so-called worst-case deterministic approach does not provide explicitly an assessment of the probability of failure of the component or system, and the likelihood of the

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Mason, Haley Alissa. "Determining Reliability Of The PEAK Assessment Tool Using Split Half Reliability." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1789.

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The present study looked at the internal reliability of the PEAK Relational Training Assessment, using a split-half method of measurement. The reliability of the assessment questions within each of the four factors, within the PEAK Relational Training Assessment was estimated through this process. Eighteen participants, between the ages of 26 months and ten years old were included in the study. All participants had been diagnosed with either a language based or developmental disability, including autism, seizure disorder, Down syndrome and related language disorders. The PEAK Relational T

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Ed-Daoui, Ilyas. "Towards systems-of-systems structural resilience assessment Resilience assessment as a foundation for systems-of-systems safety evaluation : application to an economic infrastructure An approach to systems-of-systems structural analysis through interoperability assessment : application on Moroccan Case A study of an adaptive approach for systems-of-systems integration A contribution to systems-of-systems concept standardization Unstructured peer-to-peer systems : towards swift Routing A deterministic approach for systems-of-systems resilience quantification Vers des systèmes de systèmes robustes Security enhancement architectural model for IMS based networks Towards reliable IMS-based networks." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMIR07.

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De nos jours, nous attendons des systèmes de systèmes d'être plus que simplement fonctionnel, mais aussi fiable, de préserver leurs performances, de mener les actions requises et, surtout, d'anticiper d'éventuelles défaillances. La résilience fait partie des nombreuses approches d'évaluation de la fiabilité. Elle est directement liée aux conséquences de perturbations et incertitudes. Il s'agit des conséquences en cas de perturbations et des incertitudes associées. La résilience est définie comme la capacité des systèmes à résister à une perturbation majeure selon paramètres de dégradation et à

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Damani, Manoj Kumar. "Physics Based Reliability Assessment of Embedded Passives." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5095.

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Multilayer embedded passives (resistors, inductors, and capacitors) on a printed wiring board can help to meet high performance requirements at a low cost and at a smaller size. Such an integration of embedded passives has new challenges with respect to design, materials, manufacturing, thermal management and reliability. As the area of integral passives on printed circuit boards is relatively new, there is inadequate literature on the thermo-mechanical reliability of integral passives. Therefore, there is a compelling need to understand the thermo-mechanical reliability of integral passives

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Che, Yunxiang, and S3145469@student rmit edu au. "Aging structure life prediction and reliability assessment." RMIT University. SAMME, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091113.114541.

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Confront with the serious aging problem in aircraft structure field, the profession was tasked to unveil the mysterious in the mechanism of aging. In decades, many endeavours were put into different subjects such as, fatigue and crack calculation, corrosion analysis, reliability evaluation, life prediction, structure monitor and protection, structure repair, etc. In an effort of developing a reasonable model for life prediction and reliability evaluation, a wide range of topics in the field of aging structure reliability are reviewed. Many existing methods and tools are carefully studied

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Jonnavithula, Satish. "Cost/benefit assessment of power system reliability." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/nq23942.pdf.

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