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Dissertations / Theses on the topic 'Stochastic deterioration'

Author: Grafiati

Published: 25 May 2024

Last updated: 19 July 2025

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1

SILVA, Rodrigo Bernardo da. "A Bayesian approach for modeling stochastic deterioration." Universidade Federal de Pernambuco, 2010. https://repositorio.ufpe.br/handle/123456789/5610.

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Made available in DSpace on 2014-06-12T17:40:37Z (GMT). No. of bitstreams: 2 arquivo720_1.pdf: 2087569 bytes, checksum: 4e440439e51674690e086dbc501c7a58 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2010<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>A modelagem de deterioracão tem estado na vanguarda das analises Bayesianas de confiabilidade. As abordagens mais conhecidas encontradas na literatura para este proposito avaliam o comportamento da medida de confiabilidade ao longo do tempo a luz dos dados empiricos

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2

Ahmadi, Reza. "Stochastic modelling and maintenance optimization of systems subject to deterioration." Thesis, City University London, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.540627.

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3

Hackl, Jürgen. "Generic Framework for Stochastic Modeling of Reinforced Concrete Deterioration Caused by Corrosion." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for konstruksjonsteknikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-23861.

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Reinforced concrete structures constitute an important fraction of the building infrastructure. This infrastructure is aging and a large number of structures will exceed the prescribed service period in the next decades. The aging of concrete structures is often accompanied by correspondent deterioration mechanisms. One of the major deterioration mechanisms is the corrosion of the reinforcing steel, caused by chloride ions or carbon dioxide exposure.The decisions, made in connection to possible repair or renewals of these structures, have major implications on safety and cost efficiency in a

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4

Hwisu, Shin. "Stochastic Analysis For Water Pipeline System Management." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/202696.

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5

Chang, Minwoo. "Investigating and Improving Bridge Management System Methodologies Under Uncertainty." DigitalCommons@USU, 2016. https://digitalcommons.usu.edu/etd/5039.

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This dissertation presents a novel procedure to select explanatory variables, without the influence of human bias, for deterioration model development using National Bridge Inventory (NBI) data. Using NBI information, including geometric data and climate information, candidate explanatory variables can be converted into normalized numeric values and analyzed prior to the development of deterministic or stochastic deterioration models. The prevailing approach for explanatory variable selection is to use expert opinion solicited from experienced engineers. This may introduce human influenced bia

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6

Baingo, Darek. "A Framework for Stochastic Finite Element Analysis of Reinforced Concrete Beams Affected by Reinforcement Corrosion." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23063.

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Corrosion of reinforcing bars is the major cause of deterioration of reinforced concrete (RC) structures in North America, Europe, the Middle East, and many coastal regions around the world. This deterioration leads to a loss of serviceability and functionality and ultimately affects the structural safety. The objective of this research is to formulate and implement a general stochastic finite element analysis (SFEA) framework for the time-dependent reliability analysis of RC beams with corroding flexural reinforcement. The framework is based on the integration of nonlinear finite element and

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Yang, Jidong. "Road crack condition performance modeling using recurrent Markov chains and artificial neural networks." [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000567.

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8

Zhu, Wenjin. "Maintenance of monitored systems with multiple deterioration mechanisms in dynamic environments : application to wind turbines." Thesis, Troyes, 2014. http://www.theses.fr/2014TROY0005/document.

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Les travaux présentés contribuent à la modélisation stochastique de la maintenance de systèmes mono- ou multi-composants à détériorations et à modes de défaillances multiples en environnement dynamique. Dans ce cadre, les contributions portent d'une part sur la modélisation des processus de défaillance, et d'autre part sur la proposition de structures de décision de maintenance intégrant les différents types d'information de surveillance en ligne disponible sur le système (état de détérioration mesuré ou reconstruit, état de l'environnement, ...) et le développement des modèles mathématiques d

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9

Kosgodagan, Alex. "High-dimensional dependence modelling using Bayesian networks for the degradation of civil infrastructures and other applications." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2017. http://www.theses.fr/2017IMTA0020/document.

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Cette thèse explore l’utilisation des réseaux Bayésiens (RB) afin de répondre à des problématiques de dégradation en grandes dimensions concernant des infrastructures du génie civil. Alors que les approches traditionnelles basées l’évolution physique déterministe de détérioration sont déficientes pour des problèmes à grande échelle, les gestionnaires d’ouvrages ont développé une connaissance de modèles nécessitant la gestion de l’incertain. L’utilisation de la dépendance probabiliste se révèle être une approche adéquate dans ce contexte tandis que la possibilité de modéliser l’incertain est un

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10

Langeron, Yves. "Modélisation stochastique pour la sûreté de fonctionnement des systèmes commandés." Thesis, Troyes, 2015. http://www.theses.fr/2015TROY0001/document.

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Dans le contexte des systèmes commandés, l’effort de recherche est principalement porté sur la reconfiguration d’une loi de commande à l’apparition d’une situation de défaut. La reconfiguration a pour objectif de pallier au défaut et donc de maintenir les performances du système. La problématique principale de nos travaux est d’étudier ces systèmes du point de vue de leur sûreté de fonctionnement en s’interrogeant sur les causes qui engendrent une situation de défaut. Pour cela, il est supposé l’existence d’une relation étroite entre la commande d’un système, sa dégradation et ses défauts. Un

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11

Cherkaoui, Hajar. "Vers une prise de décision robuste en maintenance conditionnelle." Thesis, Troyes, 2017. http://www.theses.fr/2017TROY0040.

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Cette thèse est une contribution à la prise de décision robuste pour la maintenance des systèmes soumis à dégradation graduelle. Dans une première contribution, nous développons un critère permettant l'évaluation conjointe de la performance économique moyenne et la robustesse de différents types de stratégies de maintenance. L'avantage du critère proposé est qu'il s'adapte à différents types de stratégies de maintenance et permet d'avoir accès à un modèle d'évaluation simple et pertinent. La deuxième contribution est dédiée au développement et l'évaluation d'une stratégie conjointe de maintena

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12

Sazvar, Zeinab. "Replenishment policies for deteriorating items under uncertain conditions by considering green criteria." Phd thesis, INSA de Lyon, 2013. http://tel.archives-ouvertes.fr/tel-00876632.

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The development and application of inventory models for deteriorating items is one of the main concerns of the experts in the domain, since the number and variety of deteriorating products are dramatically increasing. One of the major gaps in the deteriorating inventories literature is that researchers have not paid enough attention to two important features in their models: i) Considering stochastic conditions; especially stochastic lead time is almost overlooked since makes the mathematical challenges complicated, ii) designing innovative inventory policies by taking into account the environ

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13

Tan, Yang. "Optimal Discrete-in-Time Inventory Control of a Single Deteriorating Product with Partial Backlogging." Scholar Commons, 2010. http://scholarcommons.usf.edu/etd/3711.

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The implicit assumption in conventional inventory models is that the stored products maintain the same utility forever, i.e., they can be stored for an infinite period of time without losing their value or characteristics. However, generally speaking, almost all products experience some sort of deterioration over time. Some products have very small deterioration rates, and henceforth the effect of such deterioration can be neglected. Some products may be subject to significant rates of deterioration. Fruits, vegetables, drugs, alcohol and radioactive materials are examples that can experience

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14

Zuo, Jian. "Développement de stratégies de gestion conjointe de la détérioration et de de l'énergie pour un système multi-piles à combustible PEM." Electronic Thesis or Diss., Université Grenoble Alpes, 2022. http://www.theses.fr/2022GRALT077.

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Les systèmes de piles à combustible offrent une solution durable à la production d'énergie électrique dans le secteur des transports, même s'ils rencontrent encore des problèmes de fiabilité et de durabilité. Le recours à des systèmes multi-piles à combustible (MFC) au lieu de piles à combustible uniques est une solution prometteuse pour surmonter ces limitations en répartissant de manière optimale la demande de puissance entre les différentes piles tout en tenant compte de leur état de santé, au moyen d'une stratégie de gestion de l'énergie (EMS) efficace. Dans ce travail, différentes stratég

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15

Yuan, Xianxun. "Stochastic Modeling of Deterioration in Nuclear Power Plant Components." Thesis, 2007. http://hdl.handle.net/10012/2756.

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The risk-based life-cycle management of engineering systems in a nuclear power plant is intended to ensure safe and economically efficient operation of energy generation infrastructure over its entire service life. An important element of life-cycle management is to understand, model and forecast the effect of various degradation mechanisms affecting the performance of engineering systems, structures and components. The modeling of degradation in nuclear plant components is confounded by large sampling and temporal uncertainties. The reason is that nuclear systems are not readily accessible

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16

Ramesh, Kumar 1982. "Stochastic Life-cycle Analysis of Deteriorating Infrastructure Systems and an Application to Reinforced Concrete Bridges." Thesis, 2012. http://hdl.handle.net/1969.1/148250.

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Infrastructure systems are critical to a country’s prosperity. It is extremely important to manage the infrastructure systems efficiently in order to avoid wastage and to maximize benefits. Deterioration of infrastructure systems is one of the primary issues in civil engineering today. This problem has been widely acknowledged by engineering community in numerous studies. We need to evolve efficient strategies to tackle the problem of infrastructure deterioration and to efficiently operate infrastructure. In this research, we propose stochastic models to predict the process of deterioration i

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17

Cohn, Sanford. "A dynamic programming approach to maintenance: Inspection models for a single machine under stochastic deterioration." 1995. https://scholarworks.umass.edu/dissertations/AAI9606498.

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Consider a single machine that produces N items each period. This machine which deteriorates over time needs occasional maintenance to restore it to its "new" condition. Our only indication that such deterioration has occurred is an increase in the incidence of defective items produced by the machine. The more periods that pass without maintenance, the higher the chances that the machine has deteriorated and will start producing more inferior items. We suppose that in the beginning of each period, the decision maker has three options: (1) To let the machine produce during that period without i

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18

許容瑄. "Stochastic Order Acceptance and Deteriorating Machine Maintenance Decision Methods." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/50184384940879911492.

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19

Cho, Hung-Chien, and 卓建宏. "A study of deteriorating EOQ model with stochastic demand and fixed shelf-lifetime." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/q7ex9z.

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碩士<br>國立臺灣科技大學<br>工業管理系<br>106<br>This paper deals with two specific inventory models for deteriorating items with a stochastic demand rate and a fixed shelf lifetime. Many researchers have been studied deterioration phenomenon as the deteriorating items always appear ubiquitously. In practice, the expiration date is a problem of deteriorating items that must be sold before their fixed shelf lifetime, or that only can be used within a certain period after being unpacked. As a result, consideration of the expiry date could help enterprise to avoid profit loss without waste of the orders. Most o

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20

Lu, Jian-Nan, and 盧建男. "Under the stochastic demand for deteriorating items retailer dynamic pricing with complement the search." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/01996364240929658922.

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碩士<br>國立屏東商業技術學院<br>行銷與流通管理系<br>96<br>The paper mainly considers a retailer who sales deteriorating items about the price and quantity with deteriorating items, assumption with two periods of the planning horizon. Besides, we consider a single product which is subject to continues decay and a demand which is a function of price and quantity. An inventory model of periodical stocktaking allow the selling price and can freely decide to rise or fall, in order to respond to the product life cycle which is demand or supply on the market. This research tries using dynamic programming to demonstrate

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21

Widyadana, I.-Gede-Agus, and 慧珂特. "Economic production quantity models for deteriorating items with stochastic maintenance and corrective time and rework." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/02702801836779746718.

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博士<br>中原大學<br>工業與系統工程研究所<br>99<br>Inventory problems have been investigated extensively in recent years. One form of industrial issues causing inventory problems is production system reliability. Since production system is not continuously reliable, some consequences such as inventory lost sales, and product rejects can occur. Due to the condition, this research studies inventory models dealing with unreliable production system. The study develops economic production quantity (EPQ) models for deteriorating items under unreliable production systems such as machine unavailability and breakdown.

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22

Aramon, Bajestani Maliheh. "Integrating Maintenance Planning and Production Scheduling: Making Operational Decisions with a Strategic Perspective." Thesis, 2014. http://hdl.handle.net/1807/65637.

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In today's competitive environment, the importance of continuous production, quality improvement, and fast delivery has forced production and delivery processes to become highly reliable. Keeping equipment in good condition through maintenance activities can ensure a more reliable system. However, maintenance leads to temporary reduction in capacity that could otherwise be utilized for production. Therefore, the coordination of maintenance and production is important to guarantee good system performance. The central thesis of this dissertation is that integrating maintenance and production dec

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