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Dissertations / Theses on the topic 'Models of Ageing'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

Schwämmle, Veit. "Simulations on evolutionary phenomena with ageing models." [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-27556.

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2

Mitchell, Hannah Jane. "Latent phase-type models for Italy's ageing population." Thesis, Queen's University Belfast, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709549.

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Quality of care is deemed a concept of immense importance, but also of great difficulty to define and analyse. This study proposes the development of a novel statistical approach to healthcare modelling which overcomes the need to define quality of care by treating it as a hidden layer in a special type of markov model. The study setting for this research is the Italian healthcare system, in particular admissions into geriatric wards of the Lombardy region of Italy during 2009. The Coxian phase-type distribution was applied to this dataset and shown to give the best representation of the flow

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3

Calvert, Shaun. "Studies of molecular responses in models of successful ageing." Thesis, University of Liverpool, 2018. http://livrepository.liverpool.ac.uk/3018939/.

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Ageing is a major socioeconomic concern and a risk factor in most diseases. As such, a better understanding of the ageing process could provide major insights into many disease treatments and prognoses. It is still not completely clear why organisms age, though multitudes of theories exist. There is large variation within and between species in lifespan and ageing progression. Superior maintenance of cognitive and physical function with age and avoidance of age-related morbidities is known as successful ageing. Understanding how this successful ageing occurs could be key to manipulating the ag

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4

Duggett, Natalie Amy. "Photobiomodulation in animal models of ageing and Alzheimer's disease." Thesis, Durham University, 2013. http://etheses.dur.ac.uk/7018/.

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Photobiomodulation refers to low-intensity light therapy, utilising wavelengths in the near-infrared region of the electromagnetic spectrum to elicit biological effects. The principle aim of this investigation was to explore signalling pathways initiated by IR1072, with particular focus on heat shock proteins (HSPs), a family of proteins known to target cellular aggregates which are involved in the maintenance of cellular homeostasis. This was further examined by exploring the role of age and sex in the magnitude of biological effects induced. Another aim of this study was to explore the cytop

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5

Hunter, David W. "Synthesis of facial ageing transforms using three-dimensional morphable models." Thesis, St Andrews, 2009. http://hdl.handle.net/10023/763.

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6

Fenton, Mark. "The role of ageing in atherogenesis : two in vivo models." Thesis, University College London (University of London), 2006. http://discovery.ucl.ac.uk/1445443/.

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Most mammalian cells grown in culture undergo only a limited number of rounds of replicative activity. This exhaustion of proliferative capacity is termed replicative senescence. There is some evidence that replicative senescence may also occur in vivo, and it has been postulated that such cellular ageing may contribute to age-related pathologies such as atherosclerosis, and to organismic ageing itself. The aim of this thesis is to explore the associations between replicative senescence, organismic ageing and atherosclerosis. It was found that a cytochemical assay, senescence-associated P-gala

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7

Dalle, Pezze Piero. "Dynamical models of the mammalian target of rapamycin network in ageing." Thesis, University of Newcastle upon Tyne, 2013. http://hdl.handle.net/10443/2183.

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The mammalian Target of Rapamycin (mTOR)kinase is a central regulator of cellular growth and metabolism and plays an important role in ageing and age- related diseases. The increase of invitro data collected to extend our knowledge on its regulation, and consequently improve drug intervention,has highlighted the complexity of the mTOR network. This complexity is also aggravated by the intrinsic time-dependent nature of cellular regulatory network cross-talks and feedbacks. Systems biology constitutes a powerful tool for mathematically for- malising biological networks and investigating such dy

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8

Skodras, Angelos A. "Computational approaches and models for ovarian ageing : from 2D to 4D." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/10189.

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The theme of the work presented in this multi-disciplinary PhD is the development of new computational tools and techniques to study and understand spatio-temporal follicle growth in neonatal mouse ovaries. The female ovary is endowed at birth with a finite, non-renewable supply of oocytes, each enclosed in a layer of supporting somatic (granulosa) cells to form a quiescent follicle. From birth, a steady trickle of follicles initiate growth to maintain a supply of mature oocytes for regular ovulation. Disruption in the regulation of initiation of follicle growth can result in various pathologi

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9

Gibson, Paul Martyn. "The application of hybrid neural network models to archaeofaunal ageing and interpretation." Thesis, University of York, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296383.

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10

Duncombe, Jessica. "Imaging cerebrovascular alterations in experimental models of ageing and vascular cognitive impairment." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28828.

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Vascular cognitive impairment describes a heterogeneous condition in which cognitive decline is precipitated by underlying cerebrovascular dysfunction. Ageing, as well as vascular diseases such as hypertension, stroke, cerebral small vessel disease and cerebral amyloid angiopathy, are risk factors for vascular cognitive impairment. The precise mechanisms by which these conditions impact the cerebral vasculature to drive cognitive decline, however, are unknown. Previous research has indicated that vascular risk factors can lead to microvascular oxidative stress, inflammation and endothelial dys

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11

Cooper, Elizabeth Susan. "Application of polymer ageing models to cable geometry and time-to-failure distributions." Thesis, University of Leicester, 2002. http://hdl.handle.net/2381/9984.

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Polymer ageing models predict the working lifetime of polymeric insulation in terms of the electrical and thermal stresses to which it is subjected. Two such models are investigated in this thesis and are found to be mathematically similar even though they are based on different mechanisms for the way in which an electric field accelerates the ageing process. It is shown that both models can successfully fit characteristic time-to-failure data from ageing experiments involving thin films. A new method is developed to allow the ageing models to be applied to cable insulation, where the field an

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12

Pegasiou, Chrysia-Maria. "Glutamate receptor composition in ageing human brain and in mouse models of synaptic degeneration." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/422279/.

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Neurodegenerative diseases, which involve progressive loss of structure and function of neurons, and ageing are often associated with cognitive decline. With an increase in the ageing population, we need better understanding of the neuronal changes that underpin this decline. NMDA receptors (NMDARs) are essential for many forms of synaptic plasticity, a molecular correlate of learning and memory. They consist of 4 subunits; the obligatory GluN1, and regulatory GluN2/3 subunits, which in turn exist in different subtypes. Evidence from rodents has shown a correlation between the content of a Glu

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13

Abubakar, Hadiza Ahmad. "Investigating ageing behaviours in supercapacitor (cells and modules) using EEC (electrical equivalent circuit) models." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/41066/.

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This thesis contributes to the reliability and aging studies of supercapacitors for more efficient use in EV/HEV applications. This thesis demonstrates the effect of aging/failure in supercapacitor cells and module cells using accelerated tests employed to expedite the aging process. The tests, as explained below were categorized based on operational and environmental aging factors associated with supercapacitor failure in EV/HEV applications to; • Investigate supercapacitor cell performance at high temperature and constant voltage individual conditions, and also simultaneously (known as calen

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14

Baines, Holly Louise. "Using mouse models to learn about mitochrondial DNA point mutations in ageing and disease." Thesis, University of Newcastle upon Tyne, 2015. http://hdl.handle.net/10443/2805.

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Mitochondrial DNA (mtDNA) point mutations clonally expand and result in focal respiratory chain deficiency in tissues of patients with mitochondrial disease and to a lesser extent in normal human ageing. The consequences of mtDNA point mutations upon cellular processes and the mechanisms involved in mitochondrial disease heterogeneity and progression as well as age-related tissue dysfunction, however still remain unknown. The aim of this thesis was to further our understanding of clonally expanded mtDNA point mutations in ageing and the mechanisms associated with disease heterogeneity, using m

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15

Stubbs, Thomas Michael. "DNA methylation : a model system for the study of ageing." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275689.

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DNA methylation is an important epigenetic mark spanning all of life's kingdoms. In humans, DNA methylation has been associated with a wide range of age-related pathologies, including type II diabetes and cancer. More recently, in humans, changes in DNA methylation at specific positions in the genome have been found to be predictive of chronological age. Interestingly, DNA methylation age is also predictive of health status and time-to-death. A better understanding of what these DNA methylation changes represent and whether they might be causative in the ageing process will be important to asc

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16

Fabris, Fabio. "New probabilistic graphical models and meta-learning approaches for hierarchical classification, with applications in bioinformatics and ageing." Thesis, University of Kent, 2017. https://kar.kent.ac.uk/63883/.

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This interdisciplinary work proposes new hierarchical classification algorithms and evaluates them on biological datasets, and specifically on ageing-related datasets. Hierarchical classification is a type of classification task where the classes to be predicted are organized into a hierarchical structure. The focus on ageing is justified by the increasing impact that ageing-related diseases have on the human population and by the increasing amount of freely available ageing-related data. The main contributions of this thesis are as follows. First, we improve the running time of a previously p

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17

Vojtek, Vítězslav. "Studium vlivu vícefaktorového namáhání na dielektrická spektra izolačních materiálů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217175.

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18

Kapetanakis, Venediktos. "Investigation of ageing using semi-Markov multi-state models in the presence of left-, right-, and interval-censoring." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610246.

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19

Paul, Grégory. "Causes and consequences of physiological constraints on evolutionary models : new insights on the evolution of ageing and heredity." Paris 6, 2007. http://www.theses.fr/2007PA066716.

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La biologie est une discipline hétérogène scindée en deux par les approches physiologiques et les approches évolutives que leur logique interne tend maintenant à rapprocher tant au niveau conceptuel qu'empirique. L'étude du vieillissement en est un bon exemple, où la preuve apportée au cours de cette thèse de l'existence du vieillissement chez un procaryote sans phase juvénile a permis de reformuler le problème de l'évolution du vieillissement à celui de l'évolution de l'(a)symmétrie fonctionnelle. Le propos principal de cette thèse est donc de comprendre les forces physiologiques et écologiqu

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20

Benzimra, Alison. "Experiences of older beneficiaries of private medical aid schemes and retirement annuities for the development of healthy ageing models." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/27884.

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This study explores the experiences and perceptions of older beneficiaries of private medical aid schemes and retirement annuities. Its main research question is: What motivates, challenges and concerns older research participants when it comes to maintaining their good health and financial well-being? Its research objective is to place these lived experiences within the context of the private health and finance sectors of South Africa in order to develop healthy ageing models. It arises out of the increase in longevity and the potential increase of healthcare expenses in old age. The key conc

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21

Do, Hyun-Woong. "Models of defective insulin secretion in human and mouse pancreatic islets : impact of granule exocytosis, mitochondrial metabolism, and ageing." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:a6175acb-b2a2-4169-b144-0917cca8bafe.

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Type-2 diabetes (T2D), a multi-factorial disease characterised by chronic hyperglycaemia, is caused by a complex interaction between genetic and environmental factors. Genetic and phenotypic characterisations of diabetic patients suggest that a combination of β-cell failure, culminating in defective insulin secretion, as well as impairment of glucagon secretion in α-cells is central to the aetiology of the disease. Mouse models represent a valuable tool in such investigations. With the advent of large-scale genetic tools, a myriad of novel susceptibility loci associated with T2D hav

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22

Luciani, Fabio. "Designing models for the dynamics of T-cell clones." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2006. http://dx.doi.org/10.18452/15486.

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Die Hauptaufgabe des Immunsystems ist der Schutz des Koerpers gegen den externen Angriff von Viren, Bakterien und sonstigen potentiellen Krankheitserregern, sowie die Vermeidung von weiteren Infektionen durch bereits erfahrene Pathogene, die durch die Errichtung eines immunologischen Gedaechtnisses vermieden werden. Zytotoxische T-Zellen sind die Protagonisten der spezifischen Immunantwort beim Bekaempfen von intrazellulaeren Infektionen. Das Proteasom spielt eine wichtige Rolle in der Produktion von antigenischen Peptiden dar, die, sobald sie von MHC-Molekurle praesentiert werden, furr die A

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23

Soueidan, Hayssam. "Discrete event modeling and analysis for systems biology models." Thesis, Bordeaux 1, 2009. http://www.theses.fr/2009BOR13916/document.

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Les travaux effectués durant cette thèse portent sur la spécification, l'analyse et l'application de systèmes a événements discrets pour la modélisation de processus biologiques stochastiques en biologie des systèmes. Le point de départ de cette thèse est le langage de modélisation AltaRica, que nous étendons afin de permettre de décrire des événements temporisés selon des distributions de probabilités quelconques (dégénérées, discrètes et continues). Nous définissons ensuite la sémantique de ce langage en terme d'automates de mode stochastiques et présentons trois opérations de compositions p

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24

Bosch, Farré Cristina. "L'envelliment actiu i saludable a la província de Girona i a Europa segons diferents models." Doctoral thesis, Universitat de Girona, 2016. http://hdl.handle.net/10803/456474.

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To determine the prevalence of Active and Healthy Ageing (AHA) in the province of Girona and 14 European countries according to various models, to analyze the association between health variables and social determinants of health. This was a cross-sectional, observational analysis of a representative sample of population aged 50 years and older in Girona and Europe consisted of 55.278 participants. The data were obtained by MESGI50 and SHARE studies. AHA was measured using Rowe Kahn model (AHA-RK) and a model based on the WHO definition (AHA-WHO). The prevalence was 23.5% in AHA-RK model and 3

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25

Bland, Rosemary. "Senior citizens, good practice and quality of life in residential care homes." Thesis, University of Stirling, 2006. http://hdl.handle.net/1893/70.

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This thesis is an examination of the definition and implementation of ‘good practice’ in residential care for senior citizens. The central contention is that ‘good practice’ is a term that has been variously defined. Different groups define it in different ways, and their definitions have changed over time. This reflexive qualitative study explores ‘good practice’ in local authority, voluntary and private residential care homes in Scotland from the perspective of policy, practice and the experience of senior citizens who live in them. The study is based on analysis of policy documents, histori

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26

Vozbutas, Stasys. "Lietuvos aktyvaus senėjimo politikos socialinė sistema struktūrinio funkcionalizmo sociologinės teorijos kontekste." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20060509_141720-87826.

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Population ageing is one of humanity’s greatest triumphs that in the same time raise a lot of complex economic and social problems in all countries in 21 century because of necessity of warranting equal rights, increasing physical and functional health, social participation, independency and well being for elderly people. World Health Organization (WHO) suggests the actualization of active aging policy approach and encourages research for solving the problems. The social problem in Lithuania, the considerable increasing amount of elderly willing to be institutionalized and resigning their auto

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27

Burger, Csaba. "Occupational pensions in Germany : an economic geography." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:94e64b94-3bf7-4fb6-b8f5-102a472f4be7.

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By the end of the twentieth century, the generous German public pay-as-you-go pension system had been struggling with a serious deficit due to the country’s ageing population. In 2001, the German government enacted the “Riester” pension reform, named after Mr. Walter Riester, the Labour Minister brokering it, which reduced the level of publicly provided pensions, and strengthened the funded occupational and private pillars in order to replace the loss in retirement income. This thesis investigates the role and structure of occupational pensions during the Riester-reform and in its aftermath, u

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Cabella, Brenno Caetano Troca. "Modelos aplicados ao crescimento e tratamento de tumores e à disseminação da dengue e tuberculose." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/59/59135/tde-01082012-110701/.

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A generalização de modelos de crescimento por meio de um parâmetro de controle foi primeiramente proposta por Richards, em 1959. Em nosso trabalho, propomos uma forma alternativa de generalização obtendo uma interpretação emp rica e outra microscopica do parâmetro de controle. Mais especificamente, quando consideramos a proliferacão de c elulas, o parâmetro est a relacionado ao alcance da interação e a dimensão fractal da estrutura celular. Obtemos a solucão anal ítica para esta equação diferencial. Mostramos que, atrav és da escolha apropriada da escala conseguimos o colapso de dados represen

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29

Coe, J. B. "Evolutionary ageing and the Penna model." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597801.

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We consider the application and analytical solution of a commonly-employed computational model to the phenomenon of evolutionary ageing. The Penna model is expressed in mathematical form and explicitly solved in the steady-state. It is demonstrated that incorporating non-genetic individuality into the Penna model can account for the onset of a mortality plateau, where the mortality rate no longer rises with age. The analytical approach we employ is used to solve the Penna model in a variety of dynamic states - steady growth, decline and fluctuations - broadening its applicability to real syste

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30

Robson, Lindsay. "Central 5-HT function in aged rats." Thesis, University of Nottingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241224.

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31

Jayatilleke, Gaya Buddhinath, and buddhinath@gmail com. "A Model Driven Component Agent Framework for Domain Experts." RMIT University. Computer Science and Information Technology, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080222.162529.

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Industrial software systems are becoming more complex with a large number of interacting parts distributed over networks. Due to the inherent complexity in the problem domains, most such systems are modified over time to incorporate emerging requirements, making incremental development a suitable approach for building complex systems. In domain specific systems it is the domain experts as end users who identify improvements that better suit their needs. Examples include meteorologists who use weather modeling software, engineers who use control systems and business analysts in business process

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32

Tan, Lay Ean. "A model of ageing vitreous : implications for drug delivery." Thesis, University of Strathclyde, 2010. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=22620.

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This thesis concerns the development of ex-vivo and in vivo models of vitreous synchisis, a condition that develops in the elderly. The biophysical properties of the vitreous and the effects of liquefaction on the ocular disposition of intravitreally injected substances were investigated. Conventional rheometry demonstrated that the vitreous is a non-uniform, lightly cross-linked viscoelastic solid gel, which, once destroyed, cannot be re-formed. Optical trapping was used to quantify the local viscosity with the objective of allowing repeat measurements in the same sample, a method validated u

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33

Drbal, Abed Alnaser A. A. "Studies on Bioactive Lipid Mediators Involved in Brain Function and Neurodegenerative Disorders. The effect of ¿-3PUFA supplementation and lithium treatment on rat brain sphingomyelin species and endocannabinoids formation; changes in oxysterol profiles in blood of ALS patients and animal models of ALS." Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/6285.

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Lipids are important for structural and physiological functions of neuronal cell membranes. They exhibit a range of biological effects many are bioactive lipid mediators derived from polyunsaturated fatty acids such as sphingolipids, fatty acid ethanolamides (FA-EA) and endocannabinoids (EC). These lipid mediators and oxysterols elicit potent bioactive functions in many physiological and pathological processes of the brain and neuronal tissues. They have been investigated for biomarker discovery of ageing, neuroinflammation and neurodegenerative disorders. The n-3 fatty acids EPA and DPA are t

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34

Wadensten, Barbro. "Gerotranscendence from a Nursing Perspective - from Theory to Implementation /." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3544.

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Drbal, Abed Alnaser Anter Amer. "Studies on bioactive lipid mediators involved in brain function and neurodegenerative disorders : the effect of ω-3PUFA supplementation and lithium treatment on rat brain sphingomyelin species and endocannabinoids formation : changes in oxysterol profiles in blood of ALS patients and animal models of ALS". Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/6285.

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Lipids are important for structural and physiological functions of neuronal cell membranes. They exhibit a range of biological effects many are bioactive lipid mediators derived from polyunsaturated fatty acids such as sphingolipids, fatty acid ethanolamides (FA-EA) and endocannabinoids (EC). These lipid mediators and oxysterols elicit potent bioactive functions in many physiological and pathological processes of the brain and neuronal tissues. They have been investigated for biomarker discovery of ageing, neuroinflammation and neurodegenerative disorders. The n-3 fatty acids EPA and DPA are t

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36

Kowald, Axel. "Interactions of different ageing theories : development of a unifying model." Thesis, University College London (University of London), 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303200.

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37

Burian, Jan. "Reaktivní multiagentní modely v ekonomii." Doctoral thesis, Vysoká škola ekonomická v Praze, 2003. http://www.nusl.cz/ntk/nusl-77107.

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Multi-agent models are software models of real systems, which are compounded of a large amount of active autonomous units -- agents. The main theme of this study is the application of multi-agent models in economics. In the first part of this study I synthesized information from many sources and created a proposal of methodology of multi-agent modeling in social sciences. This methodology is illustrated by a detailed analysis of a well-known model of ethnocentric behavior. I focused on the issue of complexity a self-organization a observed the development of different kinds of structural compl

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Ashri, Ronald. "Models for agent-based infrastructures." Thesis, University of Southampton, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409603.

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Silvestre, Joao Alexandre Parreira. "Agent-Based models in macroeconomics." Doctoral thesis, Instituto Superior de Economia e Gestão, 2020. http://hdl.handle.net/10400.5/20604.

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Doutoramento em Economia<br>A crise financeira de 2007/2008 desencadeou uma onda de críticas à teoria económica. Ataques baseados em quatro críticas principais: os economistas não terem previsto a maior crise desde a Grande Depressão; as autoridades deixarem formar bolhas sem controlo; o falhanço da supervisão bancária; e os modelos usados serem desfasados da realidade. No caso dos modelos, o alvo principal são os modelos DSGE (dinâmicos, estocásticos e de equilíbrio geral) e duas das suas hipóteses simplificadoras: o agente representativo e a racionalidade. As economias são realidades complex

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40

Wiedemann, Michael. "Robust parameter design for agent-based simulation models with application in a cultural geography model." Thesis, Monterey, California : Naval Postgraduate School, 2010. http://edocs.nps.edu/npspubs/scholarly/theses/2010/Jun/10Jun%5FWiedemann.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, June 2010.<br>Thesis Advisor(s): Johnson, Rachel T. ; Second Reader: Baez, Francisco R, "June 2010." Description based on title screen as viewed on July 15, 2010. Author(s) subject terms: Cultural Geography, Agent-Based Model (ABM), Irregular Warfare (IW), Theory of planned Behavior (TpB), Baysian Belief Nets (BBN), Counterinsurgency Operations (COIN), Stability Operations, Discrete Event Simulation (DES), Design of Experiments (DOX), Robust Parameter Design (RPD). Includes bibliographical references (p. 69-70). Also available in

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41

Saadat, Abdelkader. "Etude de la mobilite moleculaire du collagene par courants thermostimules : modelisation du vieillissement cutane." Toulouse 3, 1988. http://www.theses.fr/1988TOU30178.

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42

Fleury, Benoît. "Comportement des supercondensateurs en environnement sévère et conception optimale d’alimentations hybrides embarquées aérospatiales." Thesis, Ecole centrale de Lille, 2013. http://www.theses.fr/2013ECLI0004/document.

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L’objectif de cette étude est de développer une alimentation multisources exploitant la complémentarité batterie/supercondensateurs pour gagner en masse sur le stockage de l’énergie électrique embarquée à bord des aéronefs et des véhicules spatiaux. L’étude se déroule en trois parties :Dans la première partie, un outil d’aide à la décision permettant développer une alimentation hybride pour une application donnée est présenté. Cet outil a pour but d’estimer la masse optimale d’une alimentation hybride à partir des seules informations d’énergies spécifiques et puissances spécifiques des sources

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Li, Binhong. "Etude de l'effet du vieillissement sur la compatibilité électromagnétique des circuits intégrés." Thesis, Toulouse, INSA, 2011. http://www.theses.fr/2011ISAT0033/document.

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Avec la tendance continue vers la technologie nanométrique et l'augmentation des fonctions complexes intègres dans les électroniques systèmes embarqués, Assurant la compatibilité électromagnétique (CEM) des systèmes électroniques est un grand défi. CEM est devenu une cause majeure de redesign des Circuits intègres (CI). D’ailleurs, les performances des circuits pourraient être affectés par les mécanismes de dégradation tels que hot carrier injection (HCI), negative bias temperature instability (NBTI), gate oxide breakdown, qui sont accélérés par les conditions d'exploitation extrême (haute / b

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Patel, Bhavik Anil. "Changes in neurotransmitter release during ageing in a model invertebrate system." Thesis, Imperial College London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421685.

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Farazdaghi, Elham. "Facial ageing and rejuvenation modeling including lifestyle behaviours, using biometrics-based approaches." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1236/document.

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Cette thèse a pour objectif de modéliser, par approches biométriques, l’évolution dans le temps du visage humain, en partant de l’âge enfant, jusqu’à un âge adulte. Ces travaux sur le vieillissement rentrent dans le cadre des activités de recherche du groupe biométrie du laboratoire LiSSi (UPEC).Comme il est connu, l’évolution des traits dues au vieillissement dépend deplusieurs facteurs intrinsèques ou extrinsèques, dont : la génétique, l’origine ethnique, le mode de vie, etc. En considérons les modèles paramétriques proposés dans cette thèse, nous exploitons entre autres, les similitudes des

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Junges, Robert, and Franziska Klügl. "Learning Agent Models in SeSAm : (Demonstration)." Örebro universitet, Institutionen för naturvetenskap och teknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-29234.

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Designing the agent model in a multiagent simulation is a challenging task due to the generative nature of such systems. In this contribution we present an extension to the multiagent simulation platform SeSAm, introducing a learning-based design strategy for building agent behavior models.

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Hilscher, Rainer. "Agent based models of competitive speciation." Thesis, University of Sussex, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413887.

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Rocks-Macqueen, James Douglas. "Agent based predictive models in archaeology." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/21013.

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For over 40 years archaeologists have been using predictive modelling to locate archaeological sites. While great strides have been made in the theory and methods of site predictive modelling there are still unresolved issues like a lack of theory, poor data, biased datasets and poor accuracy and precision in the models. This thesis attempts to address the problems of poor model performance and lack of theory driven models through the development of a new method for predictive modelling, agent based modelling. Applying GIS and agent based modelling tools to a project area in southeaster New Me

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Murray, Eleanor Jane. "Agent-Based Models for Causal Inference." Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:27201721.

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Sound clinical decision making requires evidence-based estimates of the impact of different treatment strategies. In the absence of randomized trials, two potential approaches are agent-based models (ABMs) and the parametric g-formula. Although these methods are mathematically similar, they have generally been considered in isolation. In this dissertation, we bridge the gap between ABMs and the parametric g-formula, in order to improve the use of ABMs for causal inference. In Chapter 1, we describe bias that can occur when ABM inputs or estimates are extrapolated to new populations, and demon

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Zappala, Julian. "Models of multi-agent decision making." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/28306/.

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In this thesis we formalise and study computational aspects of group decision making for rational, self-interested agents. Specifically, we are interested in systems where agents reach consensus according to endogenous thresholds. Natural groups have been shown to make collective decisions according to threshold-mediated behaviours. An individual will commit to some collective endeavour only if the number of others having already committed exceeds their threshold. Consensus is reached only where all individuals express commitment. We present a family of models that describe fundamental aspects

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