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Dissertations / Theses on the topic 'Tracer System'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Pérez, Moreno Rodrigo. "Stable isotope and anthropogenic tracer signature of waters in an andean geothermal system." Tesis, Universidad de Chile, 2019. http://repositorio.uchile.cl/handle/2250/170853.

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Tesis para optar al grado de Magíster en Ciencias, Mención Geología<br>El presente trabajo se centra en el uso de isótopos estables y trazadores antropogénicos para investigar el origen, los tiempos de residencia y la evolución de las aguas termales en el Complejo Volcánico Lonquimay-Tolhuaca, ubicado en la parte central de la Zona Volcánica Sur. Veinte muestras de agua subterránea, surgiendo en un amplio rango de temperaturas (8-96°C), son analizadas para determinar su composición química, incluyendo elementos mayores, razones isotópicas (δ2H, δ18O, δ13CTDIC) y la concentración de clorofluoro

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Figueiras, Francisca Patuleia 1984. "Dual-tracer molecular neuroimaging : methodological improvements and biomedical applications." Doctoral thesis, Universitat Pompeu Fabra, 2012. http://hdl.handle.net/10803/84176.

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Positron emission tomography (PET) is a functional imaging method that allows studying physiological, biochemical or pharmacological processes in vivo. PET is being used in both research and clinical practice. In the brain, it has been used to investigate metabolism, receptor binding, and alterations in regional blood flow. This thesis involves both preclinical and clinical dual-tracer PET imaging studies of different neurological disorders. In this way, different radiotracers were used along the projects. The first project focused on the implementation and in vivo validation of the simultaneo

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Azevedo, Celicina Maria da Silveira Borges 1955. "Nitrogen transfer using ¹⁵N as a tracer in an integrated aquaculture and agriculture system." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/288918.

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Integration of aquaculture with agriculture appears to be an excellent way to save water, dispose of aquaculture effluents, and provide additional fertilizer to the agricultural crop. However, the amount of nitrogen transferred from fish effluent to plants has not been quantified. Therefore, I tested the feasibility of using ¹⁵N labeled fish feed, to produce a labeled effluent that could be used to study the fate of nitrogen in an integrated aquaculture and agriculture system. A pilot project showed that tilapia accepted labeled feed, that ¹⁵N ammonium sulfate was not hazardous to fish, and t

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4

October, Adolf Gerswin. "Development of a conceptual model for ash dump system using hydraulic and tracer test techniques." Thesis, University of the Western Cape, 2011. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_1072_1367481543.

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<p>Coal provides for 77% of South Africa&rsquo<br>s primary energy needs and is therefore a major resource that supports the socio-economic needs of South African citizens. Power stations are the major consumers of coal in South Africa and produces electricity from burned coal. The burning of coal produces a large volume of ash that is disposed in the form of ash dump systems. The ash&nbsp<br>dump system is treated with high salinity process water from the power station for dust suppression. The process water contains salts due to evaporation processes from the recirculation&nbsp<br>&nbsp<br>o

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5

Fitznar, Hans Peter. "D-Aminosäuren als Tracer für biogeochemische Prozesse im Fluß-Schelf-Ozean-System der Arktis = D-amino acids as tracers for biogeochemical processes in the river-shelf-ocean-system of the Arctic /." Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung, 1999. http://www.gbv.de/dms/bs/toc/305097660.pdf.

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6

Klustaitis, Kori M. "Activation of the central nervous system by circulating Glucagon-Like Peptide-1." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1243357633.

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7

Lizima, Louis. "Hydraulic Evaluation of a Community Managed Wastewater Stabilization Pond System in Bolivia." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4360.

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This work explores the hydraulic performance of a wastewater lagoon system located in San Antonio, Bolivia. The system consists of one facultative pond and two maturation ponds in series and is managed through a locally elected water committee. A tracer study was performed on the primary facultative pond and an analysis of the solids accumulation on the bottom of the facultative lagoon was also performed. The results were used to generate residence time distribution curves and provide an estimate of mean residence time in the system. The data was used to examine hydraulic efficiency as it rela

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8

Peña, Malo Julio J., and Zafra-Polo Igor Panjkov. "Analysis of three ventilation systems in an office: Mixing, displacement and confluent jet ventilation system. : Analysis of temperature gradient, tracer gas and thermal comfort." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-14753.

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Scandinavian countries have always been the first in investigation and development of new ventilation systems. In the last years, engineers from Finland and Sweden are studying a new ventilation system known “Confluent jet ventilation system” which is trying to improve displacement and mixing results. The aim of this thesis master is to study the behaviour of three different ventilation systems, mixing ventilation, displacement ventilation and confluent jet ventilation, in an office room by mean of three analysis, temperature gradient analysis, tracer gas analysis and thermal comfort analysis,

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9

MELO, IVANI B. "Preparo do reagente liofilizado HYNIC-[Tyrsup(3)]-octreotato e estudo de marcacao com tecnecio-99m." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11726.

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Made available in DSpace on 2014-10-09T12:55:10Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:05:55Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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10

Henriksson, Jörgen. "Uptake of manganese and some other metals into the CNS via the olfactory pathway /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5447-6.pdf.

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11

Muthusamy, Kalai Arasu. "The pedunculopontine nucleus and its connections in the primate central nervous system : A diffusion tensor imaging and neural-tracer Anatomical study." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.510197.

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12

Smith, Lauren A. "Using radon-222 as a tracer of mixing between surface and ground water in the santa fe river sink/rise system." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0003260.

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13

Pavlas, David. "Výzkum účinnosti zesíleného odsávacího systému v kombinaci s pracovním stolem." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228036.

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Proposed diploma work provides capture efficiency measurements of generated pollution captured by reinforced slot exhaust system in modification with work bench using tracer gas method. There are shown results of capture efficiency for traditional exhausting (no radial air added) and reinforced exhausting (using radial air supply effect) in this work. This study also conatins the comparison and discusion of obtained measurement results with measurement errors and uncertainties.

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14

Billwiller, Francesca. "Activation du gyrus dentelé par le noyau supramammillaire au cours du sommeil paradoxal chez le rongeur : étude neuroanatomique et fonctionnelle." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1025/document.

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Ce travail s'inscrit dans l'étude du réseau neuronal responsable de l'activation corticale au cours du sommeil paradoxal (SP) chez le rongeur. Dans la première partie de ma thèse, j'ai participé à la démonstration que cette activation est limitée à quelques structures limbiques déterminantes pour l'apprentissage, dont le gyrus dentelé de l'hippocampe (GD). Nous avons ensuite montré que l'activation du GD en SP est due à une projection issue du noyau supramammillaire (Sum). J'ai ensuite montré en combinant l'hybridation in situ d'un marqueur des neurones glutamatergiques et GABAergiques et l'im

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15

Steimes, Johan. "Performance study and modelling of an integrated pump and gas-liquid separator system: Optimisation for aero-engine lubrication systems." Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209365.

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A system able to simultaneously separate and pump a gas-liquid mixture was developed.<p>It works efficiently and can be used in many applications (nuclear power plants,<p>pulp and paper processing, petroleum extraction, etc.). However, this pump and separator<p>system (PASS) was especially designed to handle air-oil mixture generated in<p>aero-engine lubrication systems. The PASS combines three important functions of the<p>scavenge part of the lubrication system: the deaeration and deoiling of the air-oil mixture<p>generated in the bearing and gearbox sumps and the pumping of the oil towards<p

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16

Samuelsson, Jörgen. "Development of Methods for Phase System Characterization in Liquid Chromatography." Doctoral thesis, Uppsala universitet, Ytbioteknik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8597.

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The aim of this thesis is first and foremost to improve the fundamental knowledge of nonlinear and preparative separation theory by focusing on some of the remaining “white spots” on the theoretical chromatographic map. Secondly, the acquired knowledge is used to develop, validate and execute new methods for phase characterization in liquid chromatography. The methodology used in this thesis is a combination of experiments, fundamental nonlinear theory and systematic computer simulations. A fundamental knowledge of the molecular interactions between the compounds to be separated and the separa

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17

Оводова, Н. Б. "Графічний інтерфейс для налаштування безпеки портів комутаторів". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/79554.

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Розроблений веб-додаток, який генерує конфігураційні налаштування для комутаторів на реальному обладнанні та для симуляторів Cisco Packet Tracer в комп’ютерних мережах. Сгенеровані команди можливо скопіювати завдяки зручному графічному інтерфейсу. Також для легко вводу вхідних данних були розроблені зручні та прості поля вводу. Веб-додаток був реалізований на основі фреймворку Vue JS, що робить його якісним та повністю покриваючим всі сучасні вимоги до програмного забезпечення.

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18

Schumacher, Marcus. "Airborne and ground level flask sampling for regional carbon budgets the potential of multiple tracer and isotope analyses ; development of a new "Investigation Strategy" and of an improved "Sampling System" /." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=97605406X.

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19

Song, Minho. "A Study on the Correlation between Ladle Glaze and Non-Metallic Inclusions in the Ladle Treatment." Doctoral thesis, KTH, Mikro-modellering, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-27640.

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In the present thesis, the correlation between ladle glaze and non-metallic inclusions in the ladle treatment was studied. A number of industrial trials with full scale ladle and laboratory works were performed to investigate the inclusions in the ladle treatment. BaO was used as tracer in the ladle slag to investigate the effect of slag on inclusion composition and the formation of non-metallic inclusions by ladle glaze. BaO was detected in the inclusions of all followed heats. This observation showed strong evidence for the generation of non-metallic inclusions by the ladle glaze. The increa

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20

Teshome, Tewodros Meless. "Computational fluid dynamics application to optimize and evaluate the performance of high rate algal pond system." Thesis, Strasbourg, 2020. http://www.theses.fr/2020STRAD002.

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Le chenal à haut rendement algal (CHRA) est l'un des moyens les plus appropriés pour la production de biomasse algale. Cette étude s'intéresse à l'effet de l'hydrodynamique d'un CHRA à l'échelle pilote afin d’y optimiser le mélange. La mécanique des fluides numérique a fait ses preuves en offrant la possibilité de comprendre et d'optimiser des paramètres hydrodynamiques complexes qui sont généralement considérés comme des facteurs décisifs du degré de mélange. Dans cette étude, deux approches alternatives de modélisation CFD, les méthodes vitesse d’entrée et maillage dynamique, sont utilisées

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21

Ho, Hoang Nam. "Décision multicritère à base de traces pour les applications interactives à exécution adaptative." Thesis, La Rochelle, 2015. http://www.theses.fr/2015LAROS024/document.

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Nos travaux sont menés dans le cadre des architectures logicielles pour des applications interactives dont le principe général d’exécution adaptative a été défini au sein du laboratoire. Nous nous plaçons dans l’hypothèse où une application interactive est contextualisée au moyen de situations. L’utilisateur exécute des actions dans le contexte de situations successives pour avancer dans l’application interactive jusqu’à atteindre un ou plusieurs objectifs prédéfinis par le concepteur. Au cours de son déroulement, il se peut que l’utilisateur ne puisse plus continuer selon la logique du concep

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Dias, Danyllo Santos. "Contribuição relativa do K de zonas do solo para o conteúdo na soja e plantas em sucessão." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-03052018-131125/.

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Esta pesquisa foi realizada com o objetivo de identificar a zona do solo de onde o K foi absorvido e acumulado na soja (safra) e nas plantas em sucessão (segunda safra: milho, braquiária e milho consorciado com a braquiária). Para tanto, utilizou o elemento rubídio (Rb) como marcador do nutriente potássio (K), o qual foi posicionado na superfície do solo, a 30 cm e 60 cm de profundidade. A contribuição relativa de as camadas do solo para a ciclagem de K será assumida como proveniente dos primeiros 30 cm de solo (Rb na superfície), de 30 cm a 60 cm (Rb a 30 cm) e de 60 cm a 90 cm de profundidad

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23

Nienow, Peter. "Dye tracer investigations of glacier hydrological systems." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282820.

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24

Kanso, Bilal. "Modeling and testing of component-based systems." Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2011. http://www.theses.fr/2011ECAP0050/document.

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La thèse s’inscrit dans le domaine de la modélisation et de la validation des systèmes modernes complexes. Les systèmes actuels sont en fait d’une complexité sans cesse croissante et formés de plus en plus de composants de natures différentes. Ceci rend leur processus de conception et de validation coûteux et difficile. Il semble être la simple façon permettant de faire face à cette hétérogénéité et à cette complexité est l’approche orientée composant. Suivant cette approche, le système est une entité formée par un ensemble des composants interconnectés. Les composants définissent une interfac

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Гамалій, В. С. "Розробка локальної обчислювальної мережі адміністративної будівлі компанії «Інформаційні системи»". Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/23013.

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Гамалій, В. С. Розробка локальної обчислювальної мережі адміністративної будівлі компанії «Інформаційні системи» : випускна кваліфікаційна робота : 123 "Кoмп’ютepнa iнжeнepiя" / В. С. Гамалій ; керівник роботи В. В. Казимир ; НУ "Чернігівська політехніка", кафедра iнфopмaцiйниx тa кoмп’ютepниx cиcтeм. – Чернігів, 2021. – 77 с.<br>Розроблена кваліфікаційна робота на тему: «Розробка локальної обчислювальної мережі адміністративної будівлі компанії «Інформаційні системи»». Виконано розробку схеми розташування вузлів мережі, планусхеми приміщень, розподіл адресного простору сегментів мережі та нал

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PRIGIOBBE, VALENTINA. "Analysis and application of novel method for quantifying infiltration and exfiltration in urban sewer systems." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2005. http://hdl.handle.net/2108/134.

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La presente tesi riporta i risultati di una ricerca bibliografica e sperimentale di campo relativamente al problema delle infiltrazioni di acque parassite (infiltrazioni) e di perdite di acque reflue (exfiltrazioni) in reti di fognatura urbana. Tale lavoro di tesi è stato sviluppato nell’ambito di un progetto Europeo denominato APUSS (Assessing Infiltration and Exfiltration on the Performance of Urban Sewer Systems) il cui obiettivo è stato quello di creare nuovi metodi e nuovi modelli per quantificare e prevedere le infiltrazioni ed exfiltrazioni. Tale progetto ha visto coinvolti gruppi di

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Kracht, Oliver. "Tracer-based hydrograph separation methods for sewer systems /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16994.

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Robinson, Andreas. "Implementation and evaluation of a 3D tracker." Thesis, Linköpings universitet, Datorseende, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-111887.

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Many methods have been developed for visual tracking of generic objects. The vast majority of these assume the world is two-dimensional, either ignoring the third dimension or only dealing with it indirectly. This causes difficulties for the tracker when the target approaches or moves away from the camera, is occluded or moves out of the camera frame. Unmanned aerial vehicles (UAVs) are increasingly used in civilian applications and some of these will undoubtedly carry tracking systems in the future. As they move around, these trackers will encounter both scale changes and occlusions. To impro

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29

Brataas, Erlend. "Modellering av en hardware ray tracer." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-15004.

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Berg, Martin. "Pose Recognition for Tracker Initialization Using 3D Models." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11080.

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<p>In this thesis it is examined whether the pose of an object can be determined by a system trained with a synthetic 3D model of said object. A number of variations of methods using P-channel representation are examined. Reference images are rendered from the 3D model, features, such as gradient orientation and color information are extracted and encoded into P-channels. The P-channel representation is then used to estimate an overlapping channel representation, using B<sub>1</sub>-spline functions, to estimate a density function for the feature set. Experiments were conducted with this repre

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Leblay, Joffrey. "Vers une nouvelle forme d'accompagnement des processus dans les systèmes interactifs : apport de la fouille de processus et de la recommandation." Thesis, La Rochelle, 2019. http://www.theses.fr/2019LAROS021.

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Un système d’information est un système socio-technique comprenant des processus métier et des données afférentes. Avec le développement et la démocratisation des outils informatiques, les informations stockées sont plus importantes et réparties. Il en est de même pour les processus qui deviennent de plus en plus complexes et sensibles pour les organisations. Afin d’obtenir un service, nous sommes de plus en plus amenés à composer des processus métiers pour collecter l’information, la transformer et la réinjecter. L’objectif de cette thèse consiste à explorer la problématique du pilotage de pr

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Maples, David William. "The Solar Energy Tracker." Thesis, University of Canterbury. Electrical and Computer Engineering, 2008. http://hdl.handle.net/10092/4420.

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Reference is increasingly being made towards the need for the world to find new and renewable forms of energy, especially for electric power generation, but also for space heating and the heating of water. Solar energy is one of the cheapest forms of renewable energy available and is so far one of the most underutilised resources. One contribution makes reference to the way forward as being ‘using concentrating solar power which uses parabolic mirrors to focus the solar heat (energy) and generate steam to drive electric generators’ as is currently happening in the utility power marketplace in

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Wang, Ning. "Towards a competency recommender system from collaborative traces." Thesis, Compiègne, 2016. http://www.theses.fr/2016COMP2300/document.

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Les systèmes de recommandation sont conçus dans une variété d'applications pour aider à la prise de décision. Dans un environnement collaboratif, le système de recommandation peut guider la collaboration. Les utilisateurs laissent des traces d’interaction lorsqu'ils collaborent sur une plateforme numérique. Ces traces peuvent être analysées pour détecter les signaux forts et les signaux faibles d’une collaboration. Cette thèse porte sur la mise en œuvre d'un système de recommandation exploitant les traces de collaboration dans un environnement informatique. Les travaux réalisés ont été testés

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Cheng, Danling. "Integrated System Model Reliability Evaluation and Prediction for Electrical Power Systems: Graph Trace Analysis Based Solutions." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28944.

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A new approach to the evaluation of the reliability of electrical systems is presented. In this approach a Graph Trace Analysis based approach is applied to integrated system models and reliability analysis. The analysis zones are extended from the traditional power system functional zones. The systems are modeled using containers with iterators, where the iterators manage graph edges and are used to process through the topology of the graph. The analysis provides a means of computationally handling dependent outages and cascading failures. The effects of adverse weather, time-varying loads,

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Duboc, Christine. "Commutations dans les monoïdes libres : un cadre théorique pour l'étude du parallélisme." Rouen, 1986. http://www.theses.fr/1986ROUES003.

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36

Irrgang, Kai-Uwe. "Modellierung von On-Chip-Trace-Architekturen für eingebettete Systeme." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-170562.

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Das als Trace bezeichnete nicht-invasive Aufzeichnen von Systemzuständen, während ein eingebettetes System unter realen Einsatzbedingungen in Echtzeit läuft und mit der Systemumgebung interagiert, ist ein wichtiger Teil von Softwaretests. Die Notwendigkeit für den On-Chip-Trace resultiert aus der rückläufigen Einsetzbarkeit etablierter Werkzeuge für den Off-Chip-Trace. Ein wesentlicher Bestandteil von On-Chip-Trace-Architekturen ist die Volumenreduktion der Tracedaten in deren Entstehungsgeschwindigkeit direkt auf dem Chip. Der Schwerpunkt liegt auf dem Trace des Instruktionsflusses von Prozes

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Jäger, Wadim. "Validation and Application of the System Code TRACE for Safety Related Investigations of Innovative Nuclear Energy Systems." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-93747.

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The system code TRACE is the latest development of the U.S. Nuclear Regulatory Commission (US NRC). TRACE, developed for the analysis of operational conditions, transients and accidents of light water reactors (LWR), is a best-estimate code with two fluid, six equation models for mass, energy, and momentum conservation, and related closure models. Since TRACE is mainly applied to LWR specific issues, the validation process related to innovative nuclear systems (liquid metal cooled systems, systems operated with supercritical water, etc.) is very limited, almost not existing. In this work, esse

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Ocakli, Mehmet. "A Video Tracker System For Traffic Monitoring And Analysis." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/2/12608712/index.pdf.

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In this study, a video tracker system for traffic monitoring and analysis is developed. This system is able to detect and track vehicles as they move through the camera&rsquo<br>s field of view. This provides to perform traffic analysis about the scene, which can be used to optimize traffic flows and identify potential accidents. The scene inspected in this study is assumed stationary to achieve high performance solution to the problem. This assumption provides to detect moving objects more accurately, as well as ability of collecting a-priori information about the scene. A new algorithm is pr

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Persson, Elias, and Martin Hautamäki. ""Buddy Tracker", an early warning system for recreational divers." Thesis, Karlstads universitet, Fakulteten för teknik- och naturvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-6386.

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Napolitano, Annalisa. "Automated Learning of Quantitative Software Models from System Traces." Thesis, IMT Alti Studi Lucca, 2022. http://e-theses.imtlucca.it/351/1/Napolitano_phdthesis.pdf.

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Models are primary artifacts in software system development. In particular, performance models allow us to evaluate and reason about extra-functional properties, such as the aver- age response time and throughput, for which meeting ade- quate quality levels is increasingly important. Indeed, per- formance quality is considered as essential as correctness in many practical development scenarios. Markov processes are valuable models for the qualitative analysis of performance. In this thesis, we will present statistical methods that learn Markov models directly from the running software sy

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Alqahtani, Faleh Mohammed A. "Three-dimensional facial tracker using a stereo vision system." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/131825/1/Faleh%20Mohammed%20A_Alqahtani_Thesis.pdf.

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This thesis develops an algorithm enabling accurate tracking of human faces, precise estimation of head poses, efficient resolution of occlusions and improved depth perception under different lighting conditions. The system also utilises two stereo cameras that have the ability to track movements across six degrees of freedom, thereby accounting for pose variations. The system can address circumstances in which facial features are no longer discernible, as the results demonstrate increased accuracy in real-time estimation of head poses and facial landmark features. It can also precisely map fa

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Wallenberg, Marcus. "A Single-Camera Gaze Tracker using Controlled Infrared Illumination." Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-17398.

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<p>Gaze tracking is the estimation of the point in space a person is “looking at”. This is widely used in both diagnostic and interactive applications, such as visual attention studies and human-computer interaction. The most common commercial solution used to track gaze today uses a combination of infrared illumination and one or more cameras. These commercial solutions are reliable and accurate, but often expensive. The aim of this thesis is to construct a simple single-camera gaze tracker from off-the-shelf components. The method used for gaze tracking is based on infrared illumination and

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Dobinson, Jack. "Transitional disks and planets : dust as a tracer of planetary systems." Thesis, University of Bristol, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.690770.

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Newly formed planetary systems are very challenging to observe with traditional methods. The dusty environment around young planet-hosting star systems either reduces the sensitivity of measurements (requiring a longer integration time) or renders techniques such as transit observations impossible. Therefore, this thesis aims to determine a set of markers that , if present in a system, increase the likelihood that said system is hosting a young planet. Using these markers to target observations towards promising candidates only, the best use of instrumentation can be made, and the probability

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Emeras, Joseph. "Workload Traces Analysis and Replay in Large Scale Distributed Systems." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENM081/document.

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L'auteur n'a pas fourni de résumé en français<br>High Performance Computing is preparing the era of the transition from Petascale to Exascale. Distributed computing systems are already facing new scalability problems due to the increasing number of computing resources to manage. It is now necessary to study in depth these systems and comprehend their behaviors, strengths and weaknesses to better build the next generation.The complexity of managing users applications on the resources conducted to the analysis of the workload the platform has to support, this to provide them an efficient service

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Li, Siying. "Context-aware recommender system for system of information systems." Thesis, Compiègne, 2021. http://www.theses.fr/2021COMP2602.

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Travailler en collaboration n’est plus une question mais une réalité, la question qui se pose aujourd’hui concerne la mise en œuvre de la collaboration de façon à ce qu’elle soit la plus réussie possible. Cependant, une collaboration réussie n’est pas facile et est conditionnée par différents facteurs qui peuvent l’influencer. Il est donc nécessaire de considérer ces facteurs au sein du contexte de collaboration pour favoriser l’efficacité de collaboration. Parmi ces facteurs, le collaborateur est un facteur principal, qui est étroitement associé à l’efficacité et à la réussite des collaborati

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Khandeparkar, Satej. "Behavioral modelling of embedded software using execution traces." Thesis, Högskolan i Halmstad, Halmstad Embedded and Intelligent Systems Research (EIS), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-34561.

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Software updates made by developers often achieve their intendedpurpose, but these updates may also lead to an anomalous behaviorpreviously unknown to the developers. This might be due to theirinteraction with other parts of the system. If the developers had a toolwhich could help them to visually see these changes as a behavioralmodel, it would benefit them to actually know how the changes haveaffected the behavior of the system. Thus, empowering them to fixany side effects or bugs that arise as a part of their update. Thus, in order to visualize and compare learned behavioral models,a tool w

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Troska, Jan Kevin. "Radiation-hard optoelectronic data transfer for the CMS tracker." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313621.

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Blein, Yoann. "ParTraP : un langage pour la spécification et vérification à l'exécution de propriétés paramétriques." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAM014.

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La vérification à l'exécution est une technique prometteuse pour améliorer la sûreté des systèmes complexes. Ces systèmes peuvent être instrumentés afin qu'ils produisent des traces d'exécution permettant d'observer leur utilisation dans des conditions réelles. Un défi important est de fournir aux ingénieurs logiciel un langage formel simple adapté à l'expression des exigences les plus importantes. Dans cette thèse, nous nous intéressons à la vérification de dispositifs médicaux. Nous avons effectué l'analyse approfondie d'un dispositif médical utilisé mondialement afin d'identifier les exigen

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Al, Anqah Laila. "Trace element contaminants in the Kuwait water production system." Thesis, Brunel University, 1996. http://bura.brunel.ac.uk/handle/2438/5012.

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Fresh water in Kuwait is produced by non- conventional methods. About 95% of this water comes from desalinated seawater using multi-stage flash distillation technique and the remainder comes from underground brackish water. The blended water containes organic, inorganic and trace metal impurities within the recommended international standard limits. The purpose of this work is to identify the source of selected trace metals present in the drinking water in Kuwait. Chromium, copper, iron, lead, manganese, nickel, vanadium and zinc have been analysed using atomic absorption spectroscopy (AAS) an

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Poon, Chun-hin. "An RFID-based track-and-trace anti-counterfeiting system." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/HKUTO/record/B39556906.

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