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Dissertations / Theses on the topic 'Aging condition'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Baker, Hallie Elizabeth. "A Life Course Disability Model for understanding Aging with a Chronic Condition." Miami University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=miami1250083380.

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Nakamura, Yusuke, Hiroshi Inano, Satoshi Hiroshima, Tatsuya Hirose, Masahiro Hamaguchi, and Hitoshi Okubo. "Partial Discharge Resistant Aging Mechanism of Nanocomposite Enamel Wires under Repetitive Surge Voltage Condition." IEEE, 2008. http://hdl.handle.net/2237/12130.

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3

Hollett, Anna Kirsten. "Condition factor and statolith aging in assessment of metamorphosis in sea lampreys, Petromyzon marinus, in the Great Lakes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ34100.pdf.

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4

Aprajita, Fnu. "Guidelines for Implementing Risk-Based Asset Management Program to Effectively Manage Deterioration of Aging Drinking Water Pipelines, Valves and Hydrants." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/84459.

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There is an unprecedented need to manage our deteriorating water infrastructure systems effectively to mitigate the enormous consequences of their premature failure such as loss of service, money, time, damage to other infrastructure, and damage to property. Most of the water utilities understand this need and are implementing asset management approaches and technologies to increase the overall service life of their assets. However, to indeed achieve sustainable water infrastructure systems, there is a requirement to implement a risk-based asset management program which provides a more compreh

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Laubenthal, Lilian [Verfasser]. "Cellular energy supply and aging in dairy cows : Characterization of different physiological states and impact of diet-induced over-condition / Lilian Laubenthal." Bonn : Universitäts- und Landesbibliothek Bonn, 2015. http://d-nb.info/1080591737/34.

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6

Shrestha, Dilesh Raj. "Bearing condition monitoring : An investigation on the possibility of monitoring aging of the lubricating grease by means of acoustic emission and temperature." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-87220.

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Grease is among the most widely used lubricants in rolling element bearings. Proper understanding of the effect of lubrication due to grease aging can provide a significant increase in the life of the engineering systems. However, at present, there is no sufficient understanding of the grease aging effect in rolling elements bearing. This restricts the optimal usage of the bearing and timely monitoring of the grease. The current research work tries to address this issue with an experimental investigation. This project studies the behavior of 4 types of greases in rolling elements bearings for

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7

Harris, Ockidde Dufayne. "Obesity and Health Status among Urban vs. Suburban Elderly in Philadelphia and Surrounding Counties." VCU Scholars Compass, 2004. http://scholarscompass.vcu.edu/etd/1207.

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Obesity is a dangerous health condition affecting approximately 30% of all Americans and can be attributed to 300,000 deaths a year. Obesity has been found to disproportionately affect Blacks, Latinos, and those with lower SES. Although obesity is a problem for all age groups, its prevalence is highest among those 60-74 years of age. Studies have shown that there is an association between obesity and chronic conditions such as cardiovascular disease, arthritis, cancers, and type-2 diabetes. According to the Centers for Disease Control, chronic health conditions affect 80% of all elderly pe

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Schlasza, Christian. "Analysis of aging mechanisms in Li-ion cells used for traction batteries of electric vehicles and development of appropriate diagnostic concepts for the quick evaluation of the battery condition." Thesis, Belfort-Montbéliard, 2016. http://www.theses.fr/2016BELF0155.

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Dans cette thèse, les mécanismes de vieillissement des cellules Li-ion sont analysés sur un niveau théorique,assisté par une AMDEC (Analyse des modes de défaillance, de leurs effets et de leur criticité). L'accent est mis surla famille des cellules lithium fer phosphate (LFP) utilisées comme batteries de traction dans les applicationsvéhicules électriques.L'objectif de la partie xpérimentale de cette thèse est le développement d'un concept d'un outil de diagnostic pourla détermination rapide d'état de la batterie. Une expérience de vieillissement accélérée est réalisée avec un groupede cellule

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9

Carriel, Lázaro Partamian 1950. "Carregamento e envelhecimento de transformadores elétricos de potência e aspectos prioritários para a manutenção baseada na condição : Loading and aging of electrical power transformers and main aspects to condition-based maintenance." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259377.

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Orientador: José Pissolato Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-21T11:22:49Z (GMT). No. of bitstreams: 1 Carriel_LazaroPartamian_M.pdf: 4727086 bytes, checksum: dcf745210139d03b3d6ea5af9c6db4d8 (MD5) Previous issue date: 2012<br>Resumo: O transformador é o maior ativo, o mais importante e o mais caro do sistema elétrico de potência. Este estudo tem a finalidade de apresentar uma metodologia e um processo de análise do ciclo de vida útil de transformadores de potência basead

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10

Agbangla, Nounagnon Frutueux. "Vieillissement, contrôle exécutif et exercice physique : Étude des corrélats neurophysiologiques par la spectroscopie proche de l'infrarouge." Thesis, Poitiers, 2017. http://www.theses.fr/2017POIT5035.

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Le déclin cognitif qui s'observe au cours du vieillissement se réduirait grâce à une bonne condition physique cardiorespiratoire. Dans le cadre de cette thèse, les corrélats neurophysiologiques sous-jacents de cet effet prophylactique de la condition physique cardiorespiratoire ont été explorés par le biais de la spectroscopie proche de l'infrarouge qui permet de mesurer de manière non invasive l'activité hémodynamique cérébrale. Les objectifs sont d'une part, d'investiguer les effets de la complexité de la tâche, de l'âge et de la condition physique cardiorespiratoire sur l'évolution des indi

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Zhu, Wenbo. "Soldering interconnects through self-propagating reaction process." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/23259.

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This thesis presents a research into the solder interconnects made through the reactive bonding process based on the self-propagating reaction. A numerical study of soldering conditions in the heat affected zone (HAZ) during bonding was initially carried out in order to understand the self-propagating reactive bonding and the related influencing factors. This was subsequently followed by an extensive experimental work to evaluate the feasibility and reliability of the reactive bonding process to enable the optimisation of processing parameters, which had provided a detailed understanding in te

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Pradhan, Manoj Kumar. "Conformal Thermal Models for Optimal Loading and Elapsed Life Estimation of Power Transformers." Thesis, Indian Institute of Science, 2004. https://etd.iisc.ac.in/handle/2005/97.

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Power and Generator Transformers are important and expensive elements of a power system. Inadvertent failure of Power Transformers would cause long interruption in power supply with consequent loss of reliability and revenue to the supply utilities. The mineral oil impregnated paper, OIP, is an insulation of choice in large power transformers in view of its excellent dielectric and other properties, besides being relatively inexpensive. During the normal working regime of the transformer, the insulation thereof is subjected to various stresses, the more important among them are, electrical

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Pradhan, Manoj Kumar. "Conformal Thermal Models for Optimal Loading and Elapsed Life Estimation of Power Transformers." Thesis, Indian Institute of Science, 2004. http://hdl.handle.net/2005/97.

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Power and Generator Transformers are important and expensive elements of a power system. Inadvertent failure of Power Transformers would cause long interruption in power supply with consequent loss of reliability and revenue to the supply utilities. The mineral oil impregnated paper, OIP, is an insulation of choice in large power transformers in view of its excellent dielectric and other properties, besides being relatively inexpensive. During the normal working regime of the transformer, the insulation thereof is subjected to various stresses, the more important among them are, electrical,

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14

Deshayes, Maxime. "Influence des stéréotypes sexués et des stéréotypes liés à l’âge sur la performance d’endurance non-technique : un effet positif de l’induction d’un stéréotype négatif ?" Thesis, Université Côte d'Azur (ComUE), 2019. http://www.theses.fr/2019AZUR4108.

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La théorie de la menace du stéréotype (Steele, 1997) suggère que lorsqu’un stéréotype négatif à l’encontre d’un groupe social est induit, dans un contexte où ce stéréotype est susceptible de s’appliquer, une baisse de la performance du groupe menacé serait observée. Après avoir été répliqué dans de nombreux domaines comme le domaine cognitif, cet effet négatif sur la performance a été généralisé au domaine physique et sportif. La majorité des études ont investigué cet effet au travers de tâches techniques comme des tâches de dribbles en football par exemple (pour une méta-analyse, voir Gentile

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15

Cox, Jessica Gruber. "Bilingualism, aging, and instructional conditions in non-primary language development." Thesis, Georgetown University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3606540.

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<p> A central question in second language acquisition (SLA) is the interaction of internal and external variables, and this dissertation contributes to the field by investigating the effects of bilingualism and aging on language development under different instructional conditions. Prior research suggests that bilingual young adults generally have an advantage over monolinguals in learning a non-primary language (e.g., Cenoz & Valencia, 1994; Sanz, 2000, 2007), an advantage that is more evident in less explicit instructional conditions (e.g., Lado, 2008; Lin, 2009). In addition, research s

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Saint-Aubert, Jean-Baptiste de. "Impact of aging on human decision-making in ecological conditions." Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS511.

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Chaque jour est fait d'innombrables décisions, influencées par la façon dont notre cerveau traite les informations perceptives, concentre l’attention, mobilise la mémoire ou apprend des choix passés. Ces mécanismes évoluent avec l’âge, et le vieillissement impacte l'interaction complexe des différents facteurs qui composent la prise de décision. Cette dernière repose souvent sur un équilibre entre l'exploration de nouvelles possibilités et l'exploitation d'options connues, et plusieurs études montrent que le vieillissement fait tendre les stratégies de décision vers l'exploitation. Cependant,

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Rebellato, Carolina. "Preditores da participação social de idosos independentes cadastrados em estratégias de saúde da família do município de Araras/SP." Universidade Federal de São Carlos, 2016. https://repositorio.ufscar.br/handle/ufscar/8753.

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Submitted by Alison Vanceto (alison-vanceto@hotmail.com) on 2017-05-11T13:02:44Z No. of bitstreams: 1 TeseCRpp.pdf: 3849521 bytes, checksum: 3d8a043d6e3436180b6e5cc6a1e316b5 (MD5)<br>Approved for entry into archive by Ronildo Prado (ronisp@ufscar.br) on 2017-05-18T20:18:34Z (GMT) No. of bitstreams: 1 TeseCRpp.pdf: 3849521 bytes, checksum: 3d8a043d6e3436180b6e5cc6a1e316b5 (MD5)<br>Approved for entry into archive by Ronildo Prado (ronisp@ufscar.br) on 2017-05-18T20:18:48Z (GMT) No. of bitstreams: 1 TeseCRpp.pdf: 3849521 bytes, checksum: 3d8a043d6e3436180b6e5cc6a1e316b5 (MD5)<br>Made availabl

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BECERRA, ANDRES FELIPE CRUZ. "HDPE CHARACTERIZATION BEFORE AND AFTER AGING IN DIFFERENT CONDITIONS AND MEDIUM." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=26152@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO<br>O interesse deste trabalho está baseado no estudo da influência das diferentes condições e meios de envelhecimento nas propriedades mecânicas, térmicas, estruturais e químicas do polietileno de alta densidade (PEAD) utilizado para a fabricação das tubulações para o transporte de óleo e gás. Foram fabricados corpos de prova com o formato para o teste de tra

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19

Mahendra, Nidhi. "Effect of encoding conditions on episodic memory in dementia and aging." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/279928.

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Memory deficits are considered the hallmark of Alzheimer's disease and indices of episodic memory and learning are critical in early identification of AD. Poor performance on episodic memory tests precedes detectable clinical change and global psychometric deterioration in individuals who develop AD. Performance on delayed story recall tasks is a sensitive measure of memory impairments associated with dementia. This task involves presenting a short story auditorily which subjects recall immediately and at different time delays. However, there is limited information on the effects of encoding c

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Canada, Brice. "Indentification des facteurs sous-tendant la relation entre personnalité et la santé physique lors de l'avancée en âge : le rôle des facteurs démographiques, médicaux, et environnementaux." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENS021/document.

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Au regard des problématiques sanitaires, économiques et environnementales liées à l'augmentation de la population âgée au cours des prochaines décennies, l'identification des déterminants du maintien ou de la dégradation de l'état de santé physique lors de l'avancée en âge représente un enjeu de santé publique majeur. Un consensus existe sur la relation entre les traits de personnalité définis par le Modèle en Cinq Facteurs (MCF, Digman, 1990), et la santé physique des seniors. Toutefois, peu de travaux ont identifié les processus sous-tendant cette relation. Sur la base d'un programme de rech

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Varli, Aziz Egemen. "Fatigue Crack Growth Behaviour Of Aa6013 Aluminum Alloy At Different Aging Conditions." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12607440/index.pdf.

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The effect of different aging treatments on fatigue crack growth behavior of AA6013 aluminum alloy was investigated. C(T) (Compact Tension) specimens were prepared in L-T and T-L direction for fatigue crack growth tests. Samples were in T651 as received, T42 which is solution heat treated at 538 &ordm<br>C for 90 minutes, water quenched and aged in room temperature for 96 hours, and one group of samples were overaged at 245 &ordm<br>C for 12 hours after T42 condition was achieved. Hardness and conductivity measurements were achieved for all conditions after the heat treatments. Fatigue crack

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Caron, Simon. "Accelerated aging of thick glass second surface silvered reflectors under sandstorm conditions." Thesis, Högskolan Dalarna, Maskinteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:du-6207.

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Concentrated solar power systems are expected to be sited in desert locations where the direct normal irradiation is above 1800 kWh/m2.year. These systems include large solar collector assemblies, which account for a significant share of the investment cost. Solarreflectors are the main components of these solar collector assemblies and dust/sand storms may affect their reflectance properties, either by soiling or by surface abrasion. While soiling can be reverted by cleaning, surface abrasion is a non reversible degradation.The aim of this project was to study the accelerated aging of second

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Kouadria, Djilali. "The ageing and breakdown characteristics of electrical machine insulation materials." Thesis, University of Brighton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264002.

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Thorstensen, Tom Anders. "Lifetime profit modelling of ageing systems utilising information about technical condition." Doctoral thesis, Norwegian University of Science and Technology, Department of Marine Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-2208.

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<p>This dissertation focuses on a framework to support decision making in the management of ageing (oil and gas) facilities. Within the oil and gas sector on the Norwegian Continental Shelf the topic has become important as the installations are approaching the end of their intended lifetime. The objective of the thesis is to provide decision support for managing ageing systems and equipment with respect to the inspection, overhaul and replacement strategy in a life cycle perspective. The replacement strategy also include evaluation of obsolescence i.e. changes in external requirements and thu

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Lind, Martin, та Cecilia Johansson. "Evaluation of the η (Eta) nitride with three laboratory melts". Thesis, KTH, Materialvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-176065.

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η (eta) nitride, Cr3Ni2SiN, is a precipitate found in high temperature austenitic stainless steel and is not yet included in Thermo-Calc steel database TCFE7. The aim of this thesis is to collect thermodynamic data to enable the addition of η nitride in the databases. Three laboratory melts with varying levels of silicon, chromium and nickel have been aged at 700-1000 °C for 75 h, 300 h and 1200 h and examined by Light Optical Microscopy, Scanning Electron Microscopy, Energy Dispersive Spectroscopy, Wavelength Dispersive Spectroscopy, Electron Backscattered Diffraction and X-ray Powder Diffrac

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Pimentel, Robles Edgar E. "Major insulation behaviour of generator windings under normal ageing conditions." Thesis, University of Salford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293768.

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Cortez, Edward M. "Environmental conditions and binder aging characteristics in the intermountain region of the United States." abstract and full text PDF (UNR users only), 2009. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1472949.

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Huttin, Olivier. "Dépistage du vieillissement cardio-vasculaire : impact des nouveaux marqueurs d’imagerie." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0017/document.

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Le vieillissement cardiaque est fortement associé à l’apparition d’une fibrose pouvant entrainer une dysfonction progressive du remplissage et de l’éjection ventriculaire. Le dépistage du remodelage et du vieillissement cardiovasculaire sont primordiaux afin de proposer des stratégies de prévention et de prises en charge spécifiques visant à retarder l’apparition ou ralentir la progression d’une insuffisance cardiaque à fraction d’éjection préservée. Les outils cliniques, biologiques ou d’imagerie sont insuffisamment performants à l’heure actuelle pour dépister ces modifications précoces ou pr

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Hallam, Dean Mark. "The influence of ageing and culture conditions on limbal epithelial cells." Thesis, University of Newcastle upon Tyne, 2015. http://hdl.handle.net/10443/2800.

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Introduction. The use of limbal stem cells as a cellular therapy has expanded over the last decade. Currently, the success rate of limbal stem cell transplantations is around 76% with advanced donor age being a possible reason for this figure. Medium and oxygen concentration could also have a detrimental effect on the growth of these cells for transplantation. With age the limbus undergoes a topological change which could alter the stem cells surroundings. A mouse model of corneal ageing was also used to complement the human study and avoid culturing and tissue storage artefacts. Aims. The mai

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Wang, Ningxin. "Multi-Generation Chemical Aging of Secondary Organic Aerosol Components Under Initial High/Low NOx Conditions." Research Showcase @ CMU, 2018. http://repository.cmu.edu/dissertations/1127.

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Secondary organic aerosol (SOA) formation from volatile organic compounds (VOCs) in the atmosphere can be thought of as a succession of oxidation steps. The production of later-generation SOA via continued oxidation of the first-generation products is defined as chemical aging. Zeroth order parameterizations have been developed to model the chemical aging of semi-volatile and intermediate volatility organic compounds in chemical transport models. Models using these schemes show improved performance in urban areas. However, they tend to over-predict OA in areas such as the southeastern United S

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Bécu, Marcia. "Impact of healthy aging on spatial cognition. Spatial navigation and gaze dynamics in ecological conditions." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS411.

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Ce travail de doctorat porte sur l'impact du vieillissement visuel et cognitif sur la che La nouveauté méthodologique réside dans l'utilisation d'environnements écologiques, qui permettent de tester la navigation dans des conditions naturelles et contrôlées. Nous avons montré une réorganisation spatiale liée à l'âge, où les représentations sont ancrées sur les indices objets chez les jeunes adultes et sur les indices géométriques chez les personnes âgées. L'enregistrement des mouvements du regard nous a permis d'identifier des signatures oculomotrices prédictives du codage spatial. Ces résulta

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Da, Silva domingues Elizabeth. "Improved condition monitoring of composite insulators." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/improved-condition-monitoring-of-composite-insulators(d42e15fb-d9c2-4e45-94b9-3321e9d9b9f0).html.

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Although the cost of investment in power lines insulators is 3-5% of the total cost of the installation, the impact of their performance on reliability, failure costs, maintenance routines, etc in power systems is tens of times higher. Composite insulators were introduced 50 years ago and have been used around the world with consistently good experience. Low weight, easy handling, good performance under high pollution, low maintenance costs, and resistance to vandalism are some of their advantages. Nevertheless, acid rain, salty dust deposition, corona discharges, ozone, UV radiation, and humi

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Lambert, Delphine. "Influence d’un régime riche en graisses sur un modèle de vieillissement « accéléré » : étude de la fonction et de la morphologie cardiaque, la fonction artérielle, le métabolisme et l’inflammation." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0266/document.

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L’obésité et le surpoids ont été décrits comme une pandémie. L’obésité et le vieillissement vont conduire à des complications cardiovasculaires. De plus, l’obésité favoriserait un vieillissement cardiaque prématuré chez les adultes jeunes. L’hypothèse de ce travail est qu’un régime riche en graisses, démarré avant l’âge adulte, poursuivi sur une longue durée, pourrait entraîner un vieillissement « accéléré » cardiovasculaire et métabolique. Nous avons démontré, dans un modèle murin vieillissant, qu’un régime riche en graisses conduit à des troubles métaboliques ainsi qu’à une augmentation de l

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Oldervoll, Frøydis. "Electrical and Thermal Ageing of Extruded Low Density Polyethylene Insulation Under HVDC Conditions." Doctoral thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2000. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-208.

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<p>After extensive research during the last decades extruded polymeric insulation is now becoming an alternative to the traditional oil-paper systems for high voltage DC (HVDC) cables. Durability is of great importance for power cables, and the main purpose of this work has been to increase the knowledge of factors controlling the endurance of an extruded polymeric insulation under HVDC conditions. The effect of electrical and thermal ageing on electrical properties like space change accumulation, DC breakdown strength and electrical tree initiation has been investigated and related to changes

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Miljkovic, Darko. "Corrélation entre la pression artérielle périphérique et la vitesse d'onde de pouls chez des sujets de plus de 80 ans institutionnalisés." Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0113/document.

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Rationnel : La vitesse d'onde de pouls (VOP) est une méthode non invasive d'estimation de la rigidité artérielle. Les recommandations internationales établissent que la VOP est un marqueur puissant du risque cardiovasculaire (CV). La corrélation entre la pression artérielle périphérique et la VOP et leurs influences respectives sur la mortalité ont été peu étudiés chez les sujets âgés. Notre objectif était d'analyser cette corrélation chez les sujets institutionnalisés de plus de 80 ans. Méthodes : PARTAGE (valeur prédictive de la pression artérielle et de la rigidité artérielle chez instituti

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Hahn, Daniel Robert. "Examination of the Aging Properties of Novel Cyanate Ester Thermosets and the Subsequent Evaluation of the Material under Application Conditions." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/11158.

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Cyanate ester thermosetting resins are a novel family of materials for high technology and aerospace applications. The high glass transition temperatures available from cured cyanate ester networks and subsequently, their resistances to corrosive materials make these resins attractive for harsh environmental applications. These features of cyanate ester resins presented a threefold opportunity for investigation, namely: 1) establish a characterization technique for the long term mechanical properties of the cured resins, 2) develop a method for determining the effect of physical and chemical

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Eyre, Kyle J. "Moisture absorption and stiffness degradation of carbon fiber reinforced polymer composite specimens exposed to accelerated environmental aging conditions." Laramie, Wyo. : University of Wyoming, 2007. http://proquest.umi.com/pqdweb?did=1313919681&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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Guler, Yigitoglu Askin. "A Methodology for Modeling Nuclear Power Plant Passive Component Aging in Probabilistic Risk Assessment under the Impact of Operating Conditions, Surveillance and Maintenance Activities." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1452240393.

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Hinson, Cathy Creed. "The service industry and the aging population: marketing opportunities in a dynamic environment." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/45155.

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The care of the elderly is a growing problem. Existing services are inadequate for the needs of an aging population. In order to suggest new services to deal with the care of the elderly, this report examined four areas: the demographic characteristics of our aging society, the nature of services in general, services provided to the elderly population, and the application of role theory to the caregiver/care recipient dyad. Role theory identified conflicts felt by both the caregiver and care recipient. <p>These conflicts were explored in three sets of focus group interviews: women 65 years old

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Bitseki, Penda Siméon Valère. "Inégalités de déviations, principe de déviations modérées et théorèmes limites pour des processus indexés par un arbre binaire et pour des modèles markoviens." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2012. http://tel.archives-ouvertes.fr/tel-00822136.

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Le contrôle explicite de la convergence des sommes convenablement normalisées de variables aléatoires, ainsi que l'étude du principe de déviations modérées associé à ces sommes constituent les thèmes centraux de cette thèse. Nous étudions principalement deux types de processus. Premièrement, nous nous intéressons aux processus indexés par un arbre binaire, aléatoire ou non. Ces processus ont été introduits dans la littérature afin d'étudier le mécanisme de la division cellulaire. Au chapitre 2, nous étudions les chaînes de Markov bifurcantes. Ces chaînes peuvent être vues comme une adaptation

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Tee, Sheng Ji. "Ageing assessment of transformer insulation through oil test database analysis." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/ageing-assessment-of-transformer-insulation-through-oil-test-database-analysis(9d99e3a3-8795-4b85-a484-48fae2f02d2e).html.

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Transformer ageing is inevitable and it is a challenge for utilities to manage a large fleet of ageing transformers. This means the need for monitoring transformer condition. One of the most widely used methods is oil sampling and testing. Databases of oil test records hence manifest as a great source of information for facilitating transformer ageing assessment and asset management. In this work, databases from three UK utilities including about 4,600 transformers and 65,000 oil test entries were processed, cleaned and analysed. The procedures used could help asset managers in how to approach

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Rhodes, Stephen. "Healthy ageing and binding features in working memory : measurement issues and potential boundary conditions." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/23447.

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Accurate memory for an object or event requires that multiple diverse features are bound together and retained as an integrated representation. There is overwhelming evidence that healthy ageing is accompanied by an associative deficit in that older adults struggle to remember relations between items above any deficit exhibited in remembering the items themselves. However, the effect of age on the ability to bind features within novel objects (for example, their colour and shape) and retain correct conjunctions over brief intervals is less clear. The relatively small body of work that exists o

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Somrang, Yatika. "Effect of operating conditions on product distributions and bio-oil ageing in biomass pyrolysis." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9202.

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Alternatives to petroleum-derived fuels are receiving significant interest in order to reduce dependence on finite resources of fossil fuels and to lower fossil-derived CO2 emissions. The present study addresses the production of bio-oil from biomass pyrolysis, one of the potential renewable substitutes to petroleum-derived fuels. The first objective of this work was to investigate the effect of pyrolysis operating parameters, i.e. temperature, heating rate and pyrolysis time, on product distributions in a wire-mesh reactor (WMR) which was designed to minimise secondary reactions. It has been

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Létocart, Adrien. "Capacités d’adaptations tendineuses à l’entraînement : effet de l'âge." Thesis, Compiègne, 2018. http://www.theses.fr/2018COMP2465/document.

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Un des problèmes majeurs contribuant à la réduction de la mobilité chez la personne âgée est la hausse de l’occurrence des chutes. La capacité à maintenir l’équilibre ou la stabilité posturale a été précédemment associée à la structure et aux propriétés mécaniques des tendons du membre inférieur. Cette étude fut menée afin d’évaluer les effets de l’intensité d’entrainement et de l’âge sur les changements de l’architecture tendineuse et ses propriétés mécaniques ainsi que sur les adaptations musculaires du membre inférieur. Ce projet avait ainsi pour objectif de comparer les effets de deux cond

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Skinner, Erin. "Age-related changes in the neural and cognitive processes relating to memory retrieval under conditions of full and divided attention." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2813.

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We examined the neural and cognitive processes engaged during auditory verbal recognition performance under full attention (FA) and divided attention (DA) conditions in younger and older adults. Recognition was disrupted by a word (DA-word), but not digit-based (DA-digit) distracting task, performed concurrently with retrieval. In Study 1, a multivariate functional magnetic resonance imaging analysis technique, Partial Least Squares (PLS) was used to identify distributed patterns of brain activity most related to the different conditions and behaviours. We found that similar retrieval

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Freeman, Emily. "Older adults' experiences of ageing, sex and HIV infection in rural Malawi." Thesis, London School of Economics and Political Science (University of London), 2012. http://etheses.lse.ac.uk/544/.

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This thesis contributes to understanding two demographically important phenomena: African ageing, and the ageing of the African HIV epidemic. Building on the body of interpretivist demography that privileges context and meanings, it explores older adults’ experiences of becoming old, sexuality and living with HIV in rural Malawi. The research uses a constructivist grounded theory framework. It is based primarily on data produced using repeat dependent interviews (N=135) with older men and women(N=43). These are supplemented by fieldwork observations, as well as data from a three-month multi-si

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Sansing, William K. Jr. "A quantitative study of the relationships between activity limitation and participation restriction among older people with vision impairment and comorbid conditions." Thesis, Mississippi State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3700055.

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<p> The purpose of the study was to investigate the prevalence and effects of vision impairment co-existing with other comorbid conditions. Utilizing the 2008 National Health Interview Survey, the most recent nationally representative data including expanded vision, health conditions, and activity questions, this study examined the effect of vision impairment co-existing with selected comorbid conditions among non-institutionalized older adults age ≥ 55 years. Specifically, this study compared 4 groups: (a) older adults with neither vison impairment nor comorbid conditions, (b) older adults

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Tzeng, Chien-Chun. "The political economy of NPOs promoting "active ageing" programs for the elderly in Taiwan." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:100e9681-c4f5-4fd2-b329-39c99e3da986.

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From the 1990s, welfare state and civil society in Taiwan were confronted with challenges and opportunities brought by population ageing. The author chooses NPOs with "Active Ageing" programs for the elderly, a group thriving as a consequence of Taiwan's unique transitional democratization and privatization under Neoliberalism, as a case to systematically investigate the governance structure. Four core NPOs of various scales and capacities are sampled while their stakeholders are also interviewed. Findings reveal that after the pension reform made possible by social movement and electoral poli

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Popov, Roman. "Neural Preparation For Step Initiation In Unpredictable Conditions With Age And Parkinson's Disease." ScholarWorks @ UVM, 2018. https://scholarworks.uvm.edu/graddis/952.

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Mobility is essential for the independent lifestyle. However, as the US population ages, challenges to mobility start to arise, among them just the aging itself which leads to decreased postural stability, falls and the second most common neurodegenerative disease, that is Parkinson’s disease (PD). We decided to investigate step initiation as it is crucial to mobility: walking is not possible without the first step. Step initiation is impaired in PD. However, the impact of PD on the neural mechanisms of step initiation when some of the step parameters are unpredictable remains unexplored. Cort

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Ding, Yew. "Pathways to frailty and its adverse outcomes : evidence from the English longitudinal study of ageing." Thesis, London School of Economics and Political Science (University of London), 2016. http://etheses.lse.ac.uk/3508/.

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Frailty affects 10% of adults aged 65 years and older. It denotes loss of an individual’s body reserves, which increases vulnerability to developing adverse health outcomes such as death, disability, and institutionalization. Consequently, frailty has been described as the most problematic expression of ageing. Having good understanding of specific conditions influencing development of frailty and its effects holds the key to slowing its progression and mitigating its adverse outcomes. To this end, pathways to frailty and its adverse outcomes are the focus of my thesis. I begin with a literatu

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