Relevant bibliographies by topics / Neuronal ageing / Dissertations / Theses
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Dissertations / Theses on the topic 'Neuronal ageing'

Author: Grafiati
Published: 4 June 2025
Last updated: 1 August 2025

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Consult the top 41 dissertations / theses for your research on the topic 'Neuronal ageing.'

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1

Andrews, Timothy John. "The role of targets and growth factors in neuronal ageing." Thesis, University College London (University of London), 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307442.

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2

McKillop, Laura. "Sleep slow wave oscillation : effect of ageing and preceding sleep-wake history." Thesis, University of Oxford, 2018. http://ora.ox.ac.uk/objects/uuid:a3c762ab-cbc0-4095-86db-99e04dc7e84f.

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Sleep is well-established to become more superficial and fragmented as we age, with deficits in cognitive processing also commonly observed. While effects have been identified in both humans and mice (used in this thesis), there are important species differences in these findings and importantly, very little is known about the neural dynamics underlying these changes. By integrating several state-of-the-art approaches from putative single unit electrophysiological recordings to behavioural and pharmacological assessments, this thesis aimed to provide novel insights into the neural mechanisms i
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3

Chew, Yee Lian. "Protein with Tau-like repeats (PTL-1) modulates the oxidative stress response, neuronal ageing and lifespan." Thesis, The University of Sydney, 2014. http://hdl.handle.net/2123/12497.

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Protein with Tau-like repeats (PTL-1) is the sole Tau /MAP2/MAP4 homolog in Caenorhabditis elegans. Dysregulation of Tau is a pathological hallmark of neurodegenerative diseases such as Alzheimer’s disease. Therefore, reducing Tau levels has been suggested as a therapeutic strategy. We used PTL-1 to model the biological functions of a Tau-like protein without the complication of functional redundancy. Firstly, our data indicate that PTL-1 in the nervous system mediates the oxidative stress response in a pathway that may involve the C. elegans homolog of the Nrf2 transcription factor, SKN-1. I
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4

Ladd, Aliny Antunes Barbosa Lobo. "Mecanismos de proliferação neuronal pós-natal no gânglio cervical cranial de preás (Galea spixii spixii) Wagler, 1831. Neurogênese x diferenciação neuronal tardia." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/10/10132/tde-17122009-162828/.

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Neste estudo, foram abordados os aspectos quantitativos do gânglio cervical cranial (GCC) esquerdo de preás (Galea spixii spixii) machos, oriundos do criatório da Universidade Federal Rural do Semi-Árido Nordestino de Mossoró-RN. Os seguintes parâmetros foram estimados: volume do GCC, número total e tamanho dos neurônios (uni e binucleados) durante dois períodos do desenvolvimento pós-natal (maturação e envelhecimento). Para tanto, utilizamos quatro grupos etários distintos de animais: neonatos, jovens, adultos e senis. Após a eutanásia dos animais, os GCCs foram fixados (perfusão sistêmica) c
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5

Abele, Julia Verfasser], and Daniela C. [Gutachter] [Dieterich. "Ageing in a dish : strategies ro rejuvenate neuronal cell cultures and balance protein homoeostasis / Julia Abele ; Gutachter: Daniela C. Dieterich." Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2019. http://d-nb.info/1219965723/34.

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6

Steinbach, Simone [Verfasser], Katrin [Gutachter] Marcus, and Dirk [Gutachter] Wolters. "A proteomic investigation of the ageing \(\textit substantia nigra}\) and the selective neuronal vulnerability of its neurons / Simone Steinbach ; Gutachter: Katrin Marcus, Dirk Wolters ; Fakultät für Chemie und Biochemie." Bochum : Ruhr-Universität Bochum, 2018. http://d-nb.info/1167505034/34.

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7

Marutle, Amelia. "Neuronal nicotinic receptor subtypes in normal ageing, Alzheimer's disease and schizophrenia : influences of neuropathological mechanisms as studied in human autopsy brain and transgenic mice /." Stockholm : [Karolinska institutets bibl.], 2002. http://diss.kib.ki.se/2002/91-7349-133-0.

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8

Morgan, Lindsay Dawn. "A characterisation and functional analysis of the role of the 14-3-3-like proteins in neuronal ageing in the pond snail, Lymnaea stagnalis." Thesis, University of Brighton, 2012. https://research.brighton.ac.uk/en/studentTheses/e356047e-62f2-4905-bcef-c995044ceb44.

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14-3-3 proteins are a ubiquitous family known for their ability to regulate myriad cellular processes including lifespan, neuronal signalling and transduction, protein trafficking and transmitter production and release. Previous work has shown that 14-3-3 proteins are linked to a variety of pathological neurodegenerative diseases although their role in healthy brain ageing is currently unclear. This study utilised the pond snail, Lymnaea stagnalis to examine the contribution made by 14-3-3 to the decrease in feeding rate that is seen in this model system with age. Interrogation of a Lymnaea CN
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9

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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10

Alsbury, Samantha Jane. "Neuroprotection and ageing in sensory neurons." Thesis, University College London (University of London), 2004. http://discovery.ucl.ac.uk/1446474/.

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Cardiotrophin-l (CT-1) and Urocortin (UCN) are peptides which have previously been shown to have protective effects in cardiac myocytes and which induce heat shock protein expression. CT-1 is a member of the interleukin-6 family of cytokines. UCN is a peptide expressed in the brain that binds to the corticotrophin releasing hormone receptors. In this investigation the ability of CT-1 and UCN to protect cells against a lethal stress was tested in neonatal and adult sensory neurons. CT-1 has a protective effect against hypoxic ischaemia in neonatal sensory neurons; in contrast although CT-1 indu
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11

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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12

Bet, Da Rosa Orssatto Lucas. "Effects of ageing and resistance training on intrinsic motor neurone excitability." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/233612/1/Lucas_Bet%20Da%20Rosa%20Orssatto_Thesis.pdf.

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This thesis examined the age-related impairments in the function of motor neurones, the connection between our spinal cord and the muscles, and the use of exercise as a therapy to counteract this dysfunction. Older adults have reduced function of the motor neurones, which could contribute to muscle weakness and physical function impairments observed in this population. Exercise can be used as medicine to restore motor neurone function, contributing to improvements in muscular strength and general physical function in older adults.
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Merican, Yusoff Sharizal Bin Yusoff Azmi. "The effects of ageing on the spinal neurones controlling micturition and continence." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/14285/.

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In humans, the prevalence of urinary incontinence increases with old age. This condition has a major impact on the quality of life of elderly people, and is associated with anxiety, depression, social embarrassment, interrupted sleep and financial burden. The main goal of the research presented in this thesis was to examine potential changes in neuronal circuitry underlying urinary incontinence to increase our understanding of the pathophysiology of urinary incontinence in ageing, using the mouse as a model. Measuring the micturition characteristics of 3, 24 and 32 month old mice revealed that
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Fargo, Keith Nolan. "Testosterone as a neuroprotective/neurotherapeutic agent following partial neuronal depletion." [Bloomington, Ind.] : Indiana University, 2006. http://wwwlib.umi.com/dissertations/fullcit/3210051.

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Thesis (Ph.D.)--Indiana University, Program in Neuroscience and the Dept. of Psychological and Brain Sciences, 2006.<br>Title from PDF t.p. (viewed Nov. 3, 2008). Source: Dissertation Abstracts International, Volume: 67-03, Section: B, page: 1299. Adviser: Dale R. Sengelaub.
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15

Fielder, Edward Peter. "Does a senescene-like phenotype in neurons contribute to brain ageing and neurodegeneration?" Thesis, University of Newcastle upon Tyne, 2018. http://hdl.handle.net/10443/4177.

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Senescent cells accumulate in the body with age, and drive organismal ageing and tissue dysfunction. Senescence is not a simple growth arrest, but is accompanied by a host of phenotypic changes, including the generation of pro-inflammatory molecules, and is maintained by a network of auto- and paracrine reinforcement. Senescence is now also understood to occur in post-mitotic cells, including neurons - contrary to the former definition of senescence occurring exclusively in proliferating cells. This is called the senescent-like phenotype. While senescent cells can be seen to increase with age,
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16

Border, Sandra Caroline. "The phenotypic expression of a variety of immunocytochemical and histochemical markers in relation to ageing and the disease diabetes mellitus." Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266885.

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17

Richardson, Katie. "The investigation of oxidative damage to nucleic acids during ageing and motor neuron disease." Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/5720/.

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Amyotrophic lateral sclerosis (ALS) is a progressive, fatal neurodegenerative disorder, characterised by the degeneration of upper and lower motor neurons. Multiple mechanisms have been associated with ALS pathology, however the precise molecular events leading to selective motor neuron degeneration have yet to be understood. Prominent neuronal RNA oxidation has been reported during ageing and presymptomatic stage of ALS, with specific transcripts selectively modified during disease, which may contribute towards selective cellular degeneration. Gene expression changes using microarray technolo
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18

Ativie, Frank [Verfasser]. "The role of endocannabinoid system in neuron-glial communication in the ageing and diseased brain / Frank Ativie." Bonn : Universitäts- und Landesbibliothek Bonn, 2017. http://d-nb.info/114915439X/34.

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19

Deogade, Ajinkya 1989. "Fine-grained model of the sensorimotor control underlying Drosophila larval chemotaxis." Doctoral thesis, Universitat Pompeu Fabra, 2017. http://hdl.handle.net/10803/665160.

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Chemotaxis is a powerful paradigm to study how sensory stimulations drive orientation behaviors in an organism. Drosophila larvae navigate odor gradients by controlling the duration of runs and the direction of turns. A turn is preceded by lateral head sweeps (“casts”) that sample the stimulus from the surroundings. In addition, larvae correct their course towards the odor source during runs, a phenomenon called “weathervaning”. Peristaltic waves that propagate along the body axis drive forward run events. We showed that the peristaltic wave cycle acts as a natural unit of movement and
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20

Soula, Hédi. "Dynamique et plasticité dans les réseaux de neurones à impulsions : étude du couplage temporel réseau / agent / environnement." Lyon, INSA, 2005. http://theses.insa-lyon.fr/publication/2005ISAL0056/these.pdf.

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Dans ce travail, une approche de "vie artificielle" est utilisée pour étudier le support neural des comportements. Un comportement est issu d'une bonne adéquation entre le système de contrôle, les capacités sensori-motrices de l'agent et de l'environnement. Dans un paradigme dynamique, un comportement est ainsi un attracteur dans l'espace perception/action - composé de la dynamique interne du contrôleur et de celle obtenue par l'évolution de l'agent. La dynamique neurale est à l'origine de la dynamique interne. L'apprentissage de comportement revient donc à coupler ces deux dynamiques. Nous in
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Soula, Hédi Favrel Joel Beslon Guillaume. "Dynamique et plasticité dans les réseaux de neurones à impulsions étude du couplage temporel réseau / agent / environnement /." Villeurbanne : Doc'INSA, 2005. http://docinsa.insa-lyon.fr/these/pont.php?id=soula.

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22

Ramassamy, Charles. "Effets neurotoxiques induits par des radicaux libres sur le système dopaminergique nigro-striatal. Etude d'agents protecteurs." Rouen, 1994. http://www.theses.fr/1994ROUES001.

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Les mécanismes à l'origine de la dégénérescence des neurones dopaminergiques nigrostriés observée dans la maladie de Parkinson restent encore inconnus. Au sein de ce système dopaminergique, la production de radicaux libres est favorisée par la présence de la neuromélanine, la richesse en fer ou par la dégradation de la dopamine elle-même. Dans la maladie de Parkinson l'hypothèse du stress oxydatif liée à la production excessive et neurotoxique de radicaux libres est soutenue par de nombreux travaux effectués à partir des prélèvements de cerveaux de parkinsoniens. L'implication des facteurs env
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23

Frezza-Buet, Hervé. "Un modèle de cortex pour le comportement motivé d'un agent neuromimétique autonome." Nancy 1, 1999. http://www.theses.fr/1999NAN10246.

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Nous proposons une approche du problème de contrôle d'un agent autonome fondée sur une architecture connexionniste et inspirée de données biologiques concernant le cortex cérébral. L'ensemble du comportement du robot est géré par un réseau, dont les unités sont des automates complexes, modélisant les maxicolonnes corticales et effectuant des traitements plus élaborés que le neurone formel classique. Nous insistons sur la nécessité de modéliser le rôle de notions comme la motivation et la récompense dans l'élaboration du comportement du robot. Cette prise en compte suppose la capacité de constr
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24

Bělohlávek, Jiří. "Agent pro kurzové sázení." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2008. http://www.nusl.cz/ntk/nusl-235980.

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This master thesis deals with design and implementation of betting agent. It covers issues such as theoretical background of an online betting, probability and statistics. In its first part it is focused on data mining and explains the principle of knowledge mining form data warehouses and certain methods suitable for different types of tasks. Second, it is concerned with neural networks and algorithm of back-propagation. All the findings are demonstrated on and supported by graphs and histograms of data analysis, made via SAS Enterprise Miner program. In conclusion, the thesis summarizes all
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Saadouni, Saïda. "Participation à l'étude des radicaux impliqués dans la liaison spécifique des deux inhibiteurs tritiés au transporteur neuronal de la dopamine : [3H] GBR 12783 et [3H] cocaïne." Rouen, 1993. http://www.theses.fr/1993ROUES047.

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Les réactifs alkylants, NEM, pHMBS et DTNB inhibent les liaisons spécifiques du [3h]GBR 12783 et de [3H]cocaïne aux membranes striatales de rat. Les courbes d'inhibition de la liaison spécifique du [3h]GBR 12783 par le NEM et le pHMBS diffèrent significativement de celles de la [3H]cocaïne. Les inhibiteurs et les substrats du système de capture protègent la liaison des deux radiomarqueurs vis-à-vis des effets du NEM. Seule la liaison spécifique de la [3H]cocaïne peut être protégée vis-à-vis du pHMBS par certains inhibiteurs et substrats. Cependant aucun inhibiteur ni substrat n'est capable de
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26

Bono, Guillaume. "Deep multi-agent reinforcement learning for dynamic and stochastic vehicle routing problems." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI096.

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La planification de tournées de véhicules dans des environnements urbains denses est un problème difficile qui nécessite des solutions robustes et flexibles. Les approches existantes pour résoudre ces problèmes de planification de tournées dynamiques et stochastiques (DS-VRPs) sont souvent basés sur les mêmes heuristiques utilisées dans le cas statique et déterministe, en figeant le problème à chaque fois que la situation évolue. Au lieu de cela, nous proposons dans cette thèse d’étudier l’application de méthodes d’apprentissage par renforcement multi-agent (MARL) aux DS-VRPs en s’appuyant sur
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Michulke, Daniel. "Evaluation Functions in General Game Playing." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-90566.

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While in traditional computer game playing agents were designed solely for the purpose of playing one single game, General Game Playing is concerned with agents capable of playing classes of games. Given the game's rules and a few minutes time, the agent is supposed to play any game of the class and eventually win it. Since the game is unknown beforehand, previously optimized data structures or human-provided features are not applicable. Instead, the agent must derive a strategy on its own. One approach to obtain such a strategy is to analyze the game rules and create a state evaluation funct
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Parmentier, François. "Spécification d'une architecture émergente fondée sur le raisonnement par analogie : application aux références bibliographiques." Phd thesis, Université Henri Poincaré - Nancy I, 1998. http://tel.archives-ouvertes.fr/tel-00003024.

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BAsCET est un système multi-agents à « blackboard », fondé sur l'émergence de concepts dans un modèle dynamique et inspiré de COPYCAT. Pour éviter un raisonnement déterministe unique limitant sa<br />créativité il adapte son comportement en fonction de la solution courante. Nous l'avons appliqué à la reconnaissance automatique de la structure logique (des champs) de références bibliographiques dans les articles scientifiques (en format uniquement physique, c'est-à-dire en PostScript). Le modèle, appelé Réseau de Concepts, s'apparentant à la fois aux réseaux sémantiques et aux réseaux de neuron
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Duhart, Clément. "Toward organic ambient intelligences ? : EMMA." Thesis, Le Havre, 2016. http://www.theses.fr/2016LEHA0035/document.

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L’Intelligence Ambiamte (AmI) est un domaine de recherche investigant les techniques d’intelligence artificielle pour créer des environnements réactifs. Les réseaux de capteurs et effecteurs sans-fils sont les supports de communication entre les appareils ménagers, les services installés et les interfaces homme-machine. Cette thèse s’intéresse à la conception d’Environements Réactifs avec des propriétés autonomiques i.e. des systèmes qui ont la capacité de se gérer eux-même. De tels environements sont ouverts, à grande échelle, dynamique et hétérogène, ce qui induit certains problèmes pour leu
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Marza, Pierre. "Learning spatial representations for single-task navigation and multi-task policies." Electronic Thesis or Diss., Lyon, INSA, 2024. http://www.theses.fr/2024ISAL0105.

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Agir de manière autonome dans notre monde 3D requiert un large éventail de compétences, parmi lesquelles se trouvent la perception du milieu environnant, sa représentation précise et suffisamment efficace pour garder une trace du passé, la prise de décisions et l’action en vue d’atteindre des objectifs. Les animaux, par exemple les humains, se distinguent par leur robustesse lorsqu’il s’agit d’agir dans le monde. En particulier, ils savent s’adapter efficacement à de nouveaux environnements, mais sont aussi capables de maîtriser rapidement de nombreuses tâches à partir de quelques exemples. Ce
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31

Dutar, Patrick. "Les systèmes cholinergiques centraux chez le rat adulte et le rat âgé : étude des caractéristiques électrophysiologies et pharmacologiques." Paris 6, 1986. http://www.theses.fr/1986PA066464.

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Etude in vivo chez le rat adulte et âgé à l'aide d'approches multidisciplinaires des caractéristiques des neurons cholinergiques des voies septo-hippocampique et basalo-corticale. Les caractéristiques physiologiques ont été décrites par enregistrements extra et intracellulaires, les propriétés pharmacologiques par applications iontophorétiques, les modifications de ces propriétés ont été étudiées au cours du vieillissement. Enfin une étude anatomique par marquage histologique à la peroxydase a été menée pour définir la voie basalo-corticole.
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Da, Costa Gomes Eduardo Jonas. "Modéliser l'occupation du sol au prisme des intentions des agriculteurs : une approche à base d'agents." Thesis, Paris 1, 2019. http://www.theses.fr/2019PA01H044.

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Les changements d’usage et occupation des sols résultent d’activités naturelles et anthropiques et peuvent avoir un impact négatif sur les ressources naturelles et même agricoles. Dans les régions métropolitaines, les principaux changements d’usage des sols sont ceux qui proviennent de la transformation des terres agricoles en des couvertures artificielles, essentiellement pour des usages urbains, industriels, de transports et de loisirs. Ces usages sont en concurrence avec les utilisations agricoles en raison, surtout, de la croissance démographique et de la recherche de nouvelles aires de co
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Toofanee, Mohammud Shaad Ally. "An innovative ecosystem based on deep learning : Contributions for the prevention and prediction of diabetes complications." Electronic Thesis or Diss., Limoges, 2023. https://aurore.unilim.fr/theses/nxfile/default/656b0a1f-2ff2-49c5-bb3e-f34704d6f6b0/blobholder:0/2023LIMO0107.pdf.

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En 2021, le diabète touchait environ 537 millions de personnes dans le monde. Ce chiffre devrait grimper à 643 millions d'ici 2030 et 783 millions d'ici 2045. Le diabète est une maladie métabolique persistante qui nécessite des soins et une gestion quotidiens continus. Le fardeau des maladies chroniques pèse lourdement sur les systèmes de santé lorsqu'il touche une partie substantielle de la population. De telles circonstances ont un impact négatif non seulement sur le bien-être général d'une grande partie de la population, mais contribuent également de manière significative aux dépenses de sa
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Lemaire, Laurent. "Imagerie et Spectroscopie par Résonance Magnétiqueappliquées à l'étude du petit animal." Habilitation à diriger des recherches, Université d'Angers, 2003. http://tel.archives-ouvertes.fr/tel-00129097.

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L'imagerie du petit animal a largement évolué au fils des 10 dernières années avec notamment Le recours massif aux modèles animaux de pathologies humaines. Ce besoin d'outils pré-cliniques non invasifs a contribué et contribue toujours aux développements que nous pouvons observer en Imagerie par Résonance Magnétique, mais également en imagerie optique, acoustique ou scintigraphique. Ces développements concernent bien évidemment les<br />machines et méthodes de mesures mais sont également perceptibles aux niveaux des agents de<br />contraste IRM et ultrasonores ou des traceurs optiques et radio
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Belém, Cláudia Garcia. "Retrotransposition and Ageing-associated Neuronal Function Decline." Master's thesis, 2019. http://hdl.handle.net/10362/61565.

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The world population is progressively ageing. It is estimated that by 2050, almost onefifth of the world population will be aged 65 years or more. Despite the significant increases in life expectancy observed in the last century, health span remained unchanged. Therefore, people live longer but in suboptimal conditions, which frequently lead to the development of age-related diseases, like neurodegenerative diseases. Understanding the molecular and cellular mechanisms underlying ageing and neurodegeneration is crucial and could provide the means to delay, mitigate or even revert the dete
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Wang, Lei. "The urban real-time traffic control (URTC) system : a study of designing the controller and its simulation." Mémoire, 2006. http://www.archipel.uqam.ca/3525/1/M9405.pdf.

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The growth of the number of automobiles on the roads in China has put higher demands on the traffic control system that needs to efficiently reduce the level of congestion occurrence, which increases travel delay, fuel consumption, and air pollution. The traffic control system, urban real-time traffic control system based on multi-agent (MA-URTC) is presented in this thesis. According to the present situation and the traffic's future development in China, the researches on intelligent traffic control strategy and simulation based on agent lays a foundation for the realization of the system. Th
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"Lifelong Adaptive Neuronal Learning for Autonomous Multi-Robot Demining in Colombia, and Enhancing the Science, Technology and Innovation Capacity of the Ejército Nacional de Colombia." Doctoral diss., 2019. http://hdl.handle.net/2286/R.I.55488.

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abstract: In order to deploy autonomous multi-robot teams for humanitarian demining in Colombia, two key problems need to be addressed. First, a robotic controller with limited power that can completely cover a dynamic search area is needed. Second, the Colombian National Army (COLAR) needs to increase its science, technology and innovation (STI) capacity to help develop, build and maintain such robots. Using Thangavelautham's (2012, 2017) Artificial Neural Tissue (ANT) control algorithm, a robotic controller for an autonomous multi-robot team was developed. Trained by a simple genetic algorit
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Prioste, Érica Maria Vicente. "Age Estimation of the Central Nervous System from Retinal Images." Master's thesis, 2020. http://hdl.handle.net/10316/92217.

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Trabalho de Projeto do Mestrado Integrado em Engenharia Biomédica apresentado à Faculdade de Ciências e Tecnologia<br>Este projeto teve como objetivo a obtenção do valor da idade estimada do Sistema Nervoso Central (SNC), tão próximo quanto possível à verdadeira idade cronológica, em indivíduos saudáveis, através da utilização de parâmetros de textura obtidos a partir de dados de tomografia de coerência ótica (OCT). Scans volumétricos de OCT obtidos de 100 indivíduos foram utilizados para obter imagens de fundo ("mean value fundus images") das seis camadas da neuroretina, a partir das quais fo
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39

Perles-Barbacaru, Teodora-Adriana. "IMAGERIE PAR RESONANCE MAGNETIQUE DU VOLUME SANGUIN POUR LA CARACTERISATION DE LA NEOVASCULARISATION DANS LES TUMEURS CEREBRALES EXPERIMENTALES." Phd thesis, 2007. http://tel.archives-ouvertes.fr/tel-00564020.

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LA MESURE DU VOLUME SANGUIN CEREBRAL (VSC) PAR IMAGERIE PAR RESONANCE MAGNETIQUE (IRM) PERMET D'ETUDIER L'ANGIOGENESE TUMORALE. DANS CETTE THESE, UNE METHODE IRM, DITE METHODE T1 STATIONNAIRE RAPIDE (RSST1) POUR QUANTIFIER LE VSC EST PROPOSEE. LE PRINCIPE REPOSE SUR LES PROPRIETES DE LA RELAXATION LONGITUDINALE AVEC DES AGENTS DE CONTRASTE (AC) PARAMAGNETIQUES INTRAVASCULAIRES ET SUR UN MODELE DU CERVEAU BI-COMPARTIMENTAL EXTRA/INTRAVASCULAIRE SANS ECHANGE D'EAU. LA METHODE A ETE VALIDEE SUR DES RATS SAINS A 2.35T (VSC: 2 A 3%) ET LA SENSIBILITE EVALUEE SOUS HYPERCAPNIE (AUGMENTATION DU VSC DE
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Silva, Carlos Manuel da. "Um estudo sobre emergência de linguagens para a comunicação de agentes em sistemas de vida artificial." Master's thesis, 2009. http://hdl.handle.net/1822/10511.

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Dissertação de mestrado em Informática (área de especialização em Sistemas Distribuídos, Comunicações por Computador e Arquitectura de Computadores)<br>O objectivo deste trabalho é investigar os processos que uma comunidade de agentes artificiais poderá utilizar de forma a criar a sua interpretação da sua realidade e chegar a um consenso quanto à simbologia decorrente dessa interpretação. Esse consenso permitirá a emergência de linguagens que suportem uma forma básica de comunicação, sem interferência de nenhum agente exterior. Desta forma, estes agentes poderão adquirir ganhos de desem
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Nabli, Adel. "The multilevel critical node problem : theoretical intractability and a curriculum learning approach." Thesis, 2020. http://hdl.handle.net/1866/24329.

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Évaluer la vulnérabilité des réseaux est un enjeu de plus en plus critique. Dans ce mémoire, nous nous penchons sur une approche étudiant la défense d’infrastructures stratégiques contre des attaques malveillantes au travers de problèmes d'optimisations multiniveaux. Plus particulièrement, nous analysons un jeu séquentiel en trois étapes appelé le « Multilevel Critical Node problem » (MCN). Ce jeu voit deux joueurs s'opposer sur un graphe: un attaquant et un défenseur. Le défenseur commence par empêcher préventivement que certains nœuds soient attaqués durant une phase de vaccination. Ensuite,
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