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Dissertations / Theses on the topic 'RCS simulation'

Author: Grafiati

Published: 25 January 2025

Last updated: 31 July 2025

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1

Ton, Cuong. "Radar cross section (RCS) simulation for wind turbines." Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/34754.

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Approved for public release; distribution is unlimited<br>Wind-turbine power provides energy-independence and greenhouse-gas reduction benefits, but if wind turbines are built near military and commercial radar and communication installations, they can cause degradation in the systems performance. The purpose of this research is to study the radar cross section (RCS) of a wind turbine and assess its effect on the performance of radar and communication systems. In this research, some basic scattering characteristics of wind turbines are discussed. Several computational methods of RCS prediction

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2

Al-Asad, Zahir. "Implementation of NURBS Objects in a Ray TracingCode for RCS Simulation." Thesis, Högskolan i Gävle, Ämnesavdelningen för elektronik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-7713.

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Hanslík, Radovan. "Odrazná plocha osobních automobilů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400701.

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This diploma thesis is aimed at radar cross section of passenger cars. Basic scattering parameters of simple targets are described. Some numeric methods used for computing radar cross section are discussed. CST Microwave Studio is used for simulation of passenger car with two different solvers. For the results there are plots of radar cross section of a car for 1 GHz, 24.125 GHz and 33 GHz. There is a plot of visualized hotspots.

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Lindgren, Jonas. "Evaluation of CST Studio Suite for simulation of radar cross-section." Thesis, Umeå universitet, Institutionen för fysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-187751.

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When designing military vehicles, it is of interest to make the vehicles difficult to detect using radar. The radar cross-section (RCS) property indicates how easily a vehicle is detected by radar and should thus be minimized. However, the RCS of a vehicle represents the cross-sectional area of a perfectly reflecting sphere that would produce the same reflection strength as the vehicle in question. Since this is extremely complicated to calculate as military vehicles are quite complex, these calculations are performed using computational simulations. BAE Systems Hägglunds is looking into chang

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5

Salhani, Mohamad. "Modélisation et simulation des réseaux mobiles de 4ème [quatrième] génération." Phd thesis, Toulouse, INPT, 2008. http://oatao.univ-toulouse.fr/7725/1/salhani.pdf.

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Cette thèse porte sur l'interopérabilité et la qualité de service dans les réseaux de 4ème génération. En particulier, nous proposons des solutions d'intégration entre le réseau WiMAX et le système satellite DVB-RCS en s'appuyant sur le standard IEEE 802.21. Trois solutions peuvent être mises en place pour l'interconnexion de réseaux sans fil. Il s'agit de la technologie GAN soutenue par le 3GPP, du protocole FMIP proposé par l'IETF et du standard IEEE 802.21. Notre choix se porte sur ce denier standard car il propose un cadre générique pour l'interopérabilité des réseaux. En fait, nous propos

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6

Hanslík, Radovan. "Odrazná plocha osobních automobilů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-412967.

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This diploma thesis is aimed at radar cross section of passenger cars. Basic scattering parameters of simple targets are described. Selected numeric methods used for computing radar cross section are discussed. Shape and size of simplified vehicle models is investigated. Simulations are verified by computing RCS of objects with well-known characteristics. Radar cross section of Skoda Octavia was simulated using selected numeric methods. Results of all performed simulations are shown in included graphs. Experimental measurment of radar cross section of a vehicle was performed so the measured da

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7

Kljajič, Marko. "Simulační studie robotické linky pro obsluhu obráběcího stroje a realizaci dokončovacích operací." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417547.

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The aim of the thesis is conceptual design of robotic workplace with its subsequent simulation. The current workplace for manufacturing and deburring parts for automotive industry is operated manually. The plan is overall automation and replacement of operators by robots. The thesis deals with the concept of layout of elements in the cell, and the procedure of their selection or design. Process simulation is performed in the Process Simulate software from Siemens. For the purposes of the work is used RCS module, which on the basis of dynamic conditions can calculate the cycle of production ver

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8

Grönberg, Christoffer. "Simulering och cykeltidsberäkning av automatiserad produktionslina med hjälp av Process Simulate." Thesis, Högskolan Väst, Institutionen för ingenjörsvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-2806.

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Detta examensarbete har utförts i samarbete med Löfqvist Engineering i Örebro. Uppgiften har varit att utföra en simulering av en stor automatiserad produktionslina som ska användas vid tillverkning av avgassystem till lastbilar. Utifrån denna simulering skall exakta cykeltider för produktionen bestämmas. Dessa tider kan sedan användas av Löfqvist Engineering för att verifiera tidigare uppskattade tider. Arbetet inkluderar en litteraturstudie om Lean Production och hur det fungerar ihop med automation. Det finns även med lite bakgrundsinformation om Just In Time, olika filformat och robotsimul

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9

Bui, Nicolas. "Méthode FDTD conforme et d’ordre (2,4) pour le calcul de SER large bande de cibles complexes." Thesis, Limoges, 2016. http://www.theses.fr/2016LIMO0118/document.

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L'évaluation précise de la surface équivalente radar (SER) large bande de cibles complexes et de grande dimension est réalisée par des méthodes numériques rigoureuses. Parmi celles-ci, la méthode des différences finies dans le domaine temporel (FDTD) est bien adaptée pour effectuer ce calcul de SER sur une large bande de fréquence et obtenir une signature temporelle de la cible. Le schéma de Yee, schéma FDTD historique pour la simulation de propagation d'ondes électromagnétiques en régime transitoire, souffre de deux points faibles cruciaux: la dispersion numérique imposant une finesse de mail

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10

Arzur, Fabien. "Développement de simulateurs de cibles pour radars automobiles 77 GHz." Thesis, Brest, 2017. http://www.theses.fr/2017BRES0082.

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Le travail présenté dans ce manuscrit porte sur le développement d’un simulateur de cible (RTS) pour radars automobiles 77 GHz. Afin de proposer des véhicules toujours plus sûrs, les constructeurs automobiles développent des systèmes ADAS de plus en plus performants. On assiste aujourd’hui à la démocratisation des radars automobiles d’alerte à la collision et de régulation de distance. La généralisation de tels systèmes sur des véhicules de série va nécessiter le recours accru à des moyens de tests, chez les constructeurs et dans les centres de contrôle technique. Pour pouvoir tester et calibr

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Mazzolo, Lisa-Marie. "Étude et développement d’un outil efficace de simulation pour l’évaluation de SER : Application à la détection d’objets enfouis à partir de plates-formes aéroportées." Electronic Thesis or Diss., Toulouse, ISAE, 2024. http://www.theses.fr/2024ESAE0047.

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La détection d'objets enfouis, qu'il s'agisse d'engins explosifs dans un contexte militaire ou de structures archéologiques dans un contexte civil, constitue une préoccupation majeure. En termes de télédétection radar, les systèmes aéroportés, comme le radar à synthèse d’ouverture (SAR), permettent une imagerie non destructive des sous-sols tout en offrant la possibilité d'explorer de vastes zones avec une distance de sécurité par rapport à celles-ci. Cependant, leur efficacité pour la détection d’objets enfouis dépend de nombreux facteurs, tels que les caractéristiques diélectriques du sol, q

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12

Nishinari, Katsuhiro, Satoshi Kokubo, and Kazuhiro Yamamoto. "Simulation for pedestrian dynamics by real-coded cellular automata (RCA)." Elsevier, 2007. http://hdl.handle.net/2237/20045.

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13

MORGAT, ANNE. "Contribution a l'etude structurale des p21 ras. Simulations par dynamique moleculaire de la p21 ha ras." Paris 11, 1991. http://www.theses.fr/1991PA112159.

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La connaissance structurale approfondie des proteines ras (p21 ras) permet une meilleur comprehension des mecanismes reactionnels regulant leur activite biologique (fixation des nucleotides gdp, gtp et hydrolyse du gtp, en presence d'un ion mg ii). L'etude des complexes p21. Gppnp et p21. Gdp dans leur environnement cristallin, associee a une etude de leur surface moleculaire a montre des sites potentiels d'interactions avec d'autres macromolecules. Les proprietes dynamiques de la p21 ras complexee a une molecule de gppnp et un ion mg ii ont ete etudiees par dynamique moleculaire (programme di

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14

Klähn, Marco. "Untersuchung des intrinsischen GTPase-Mechanismus von Ras p21 mit Mitteln der Molekulardynamik-Simulation und QM/MM-Kraftfeld." [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969939345.

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15

Silva, Alessandro Alves da. "Efeitos topográficos em espectros RBS." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-09042008-142058/.

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A medida da rugosidade de uma superfície costuma produzir resultados que dependem da metodologia empregada. A microscopia eletrônica de varredura, SEM, a microscopia de força atômica, AFM e a perfilometria são algumas das técnicas costumeiramente empregadas na caracterização de superfícies rugosas. Esse trabalho explora a e desenvolve o uso da espectrometria de retroespalhamento Rutherford, RBS, para medir e quantificar a rugosidade de uma superfície. Quatro diferentes amostras com rugosidade periódica e controlada (duas retangulares e duas senoidais) com razão de aspecto suficientemente grand

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16

Dirks, Babette. "Simulation and Measurement of Wheel on Rail Fatigue and Wear." Doctoral thesis, KTH, Spårfordon, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168023.

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The life of railway wheels and rails has been decreasing in recent years. This is mainly caused by more traffic and running at higher vehicle speed. A higher speed usually generates higher forces, unless compensated by improved track and vehicle designs, in the wheel-rail contact, resulting in more wear and rolling contact fatigue (RCF) damage to the wheels and rails. As recently as 15 years ago, RCF was not recognised as a serious problem. Nowadays it is a serious problem in many countries and ''artificial wear'' is being used to control the growth of cracks by preventive re-profiling and gri

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17

Mondloch, Riley. "Characterization of agricultural floodplain scour using one-dimensional hydraulic simulation." Thesis, University of Iowa, 2014. https://ir.uiowa.edu/etd/1487.

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The Iowa Flood Center (IFC), a unit of The University of Iowa's IIHR - Hydroscience & Engineering, and the Iowa Department of Natural Resources are developing a statewide floodplain boundary dataset to provide information that is critical to proper flood mitigation planning. During flooding, soil loss from agricultural land, in addition to inundation, can have a substantial economic impact on an agricultural state like Iowa. The ability to identify areas with a high potential to experience scour during flooding could assist farmers and land owners in making better land management decisions. Cu

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18

Dippolito, Mario. "Real scale simulation of ballistic test for soft armor." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/36199.

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Doctor of Philosophy<br>Department of Mechanical and Nuclear Engineering<br>Youqi Wang<br>The strength of the fabric system is based on fiber strength and fabric mechanics. Modeling a fabric system accurately requires research into fiber behavior within the yarn and yarn behavior within the fabric. Limited computer resources require new approaches to yarn modeling and fabric modeling especially in regards to ballistic impact. The fabric is discontinuous. There are many factors which require modeling the physics in order to accurately simulate and design fabric systems. Weaving yarns into

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19

Davis, Mallory. "Numerical Simulation of Unsteady Hydrodynamics in the Lower Mississippi River." ScholarWorks@UNO, 2010. http://scholarworks.uno.edu/td/1126.

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Alterations along the Mississippi River, such as dams and levees, have greatly reduced the amount of freshwater and sediment that reaches the Louisiana coastal area. Several freshwater and sediment diversions have been proposed to combat the associated land loss problem. To aid in this restoration effort a 1-D numerical model was calibrated, validated, and used to predict the response of the river to certain stimuli, such as proposed diversions, channel closures, channel modifications, and relative sea level rise. This study utilized HEC-RAS 4.0, a 1-D mobile-bed numerical model, which was cal

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20

Abba, Omar Sabina. "Capability of CORDEX RCMs in simulating extreme rainfall events over South africa." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/9103.

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Includes bibliographical references.<br>In South Africa, extreme rainfall events often lead to widespread destruction, damage infrastructure, displace communities, strain water management and even destroy lives. Past studies have shown that reliable predictions of extreme rainfall events from regional climate models (RCMs) could help reduce the impact of these events. The present study evaluates the ability of nine RCMs in simulating extreme rainfall events over South Africa, focusing on the Western Cape (WC) and east coast (EC) areas. This study defines an extreme rainfall over a location as

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21

Hossein, Nia Saeed. "An Investigation of the Iron-Ore Wheel Damages using Vehicle Dynamics Simulation." Licentiate thesis, KTH, Spårfordon, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-159733.

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Maintenance cost is one of the important issues in railway heavy haul operations. For the iron-ore company LKAB, these costs are mainly associated with the reprofiling and changing of the wheels of the locomotives and wagons. The main reason for the wheel damages is usually surface initiated rolling contact fatigue (RCF) on the wheels.The present work tries to enhance and improve the knowledge of the vehicle-track interaction of the Swedish iron-ore freight wagons and locomotives used at Malmbanan. The study is divided into two parts. Firstly, it is tried to get into the roots of RCF using the

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Hossein, Nia Saeed. "On Heavy-Haul Wheel Damages using Vehicle Dynamics Simulation." Doctoral thesis, KTH, Spårfordon, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-220344.

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Maintenance cost is one of the important issues in railway heavy-haul operations. In most of the cases, these costs are majorly referring to reprofiling and changing the wheels of the locomotives and the wagons. The main reason of the wheel damages is usually severe wear and/or surface initiated rolling contact fatigue (RCF).This work tries to enhance and improve the knowledge of the wheel wear and RCF prediction models using dynamic simulations. While most of the contents of this study can be generalised to other operational networks, this study is focused on the locomotives and wagons of the

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Harding, Charles P. "In Vitro Simulation of Microgravity Induced Muscle Loss Successfully Increases Expression of Key In Vivo Atrophy Markers." DigitalCommons@USU, 2019. https://digitalcommons.usu.edu/etd/7436.

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Muscle loss from lack of activity is a serious issue for immobilized patients on Earth and in human spaceflight, where the low gravity environment prevents normal muscle activity. Simulating muscle loss in cultured cells is an important step in understanding how this condition occurs. This work evaluates different means of simulating muscle loss and selects the one that most closely mimics the cellular responses seen in animals and humans. To simulate the microgravity environment of spaceflight, mouse skeletal muscle cells were grown in a rotary cell culture system (RCCS). Growing the cells wi

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24

Hudec, Martin. "Klimatická změna a její vliv na vodohospodářské řešení zásobního objemu nádrže." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372277.

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The diploma thesis describes Climate Change and impacts of Climate Change on the development of the water management analyis of reservoir strorage capacity. The development of climate chang influence on reserviors storage capacity is presented until 2100. It also gives a detailed online downscaling description.

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Johnston, Michael. "Development of a molecular simulator and its application to the study of biomolecular dynamics." Doctoral thesis, Universitat Pompeu Fabra, 2009. http://hdl.handle.net/10803/7172.

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Aquesta tesi tracta de la creació d'un nou programari de codi obert i d'una interfície de programació (API) per realitzar simulacions (bio) moleculars, així com de a la seva aplicació posterior a problemes biològics. El nou programa, Adun, es focalitza en les àrees clau del càlcul d'energies lliures, el desenvolupament ràpid de programari i la productivitat d'alt rendiment. Mètodes com SCAAS, EVB i Born generalitzat han estat implementats per tal d'assolir el primer objectiu. La presencia d'aquestes tècniques, a m´es d'altres, mostra la velocitat de desenvolupament d'Adun. Totes les caracterís

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Ssembatya, Martin. "PERFORMANCE EVALUATION OF A SOLAR COOLING SYSTEM IN UAE – RAS AL KHAIMAH BY BOTH EXPERIMENT AND SIMULATION." Thesis, Högskolan i Gävle, Akademin för teknik och miljö, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-14312.

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In United Arab Emirates (UAE), a huge proportion of electrical energy consumed in buildings is used to run air conditioning equipments. This is because UAE’s climate is characterized by very high ambient temperatures and high humidity, especially during summer periods. There is need to promote air conditioning systems that are run by renewable energy based power because of the environment threats and energy security negative issues associated with conventional fossil fuel – energy powered systems. The huge buildings’ cooling loads occur during periods of high solar insolation; this creates a h

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Pérez, Ancelmo Clodomiro Alcides. "Propuesta de implementación de un sistema de gestión de mantenimiento centrado en la confiabilidad para la industria farmacéutica." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2018. http://hdl.handle.net/10757/625963.

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La siguiente propuesta de implementación está formada por tres capítulos en el primero se está considerando el marco teórico investigado de fuentes con revistas indexadas y respaldado por autores especialistas en los temas de confiabilidad, mantenibilidad definición, evolución, técnica, aplicación y tipos de mantenimiento. En el segundo capítulo la situación y diagnostico actual de la empresa, identificación del activo más relevante y el impacto económico que genera. En el tercer capítulo se muestra la propuesta de la implementación con respecto al diagnóstico que se realizó en los capítulo

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Mahmud, Sadab. "Development and Simulation of Maximum Power Point Tracking (MPPT) Controller with Ripple Correlation Control (RCC) for Deep Space Spacecraft." University of Toledo / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1588686169167826.

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Peyroux, Elodie. "Remédiation des troubles de la cognition sociale dans la schizophrénie et les troubles apparentés : le programme RC2S : études de cas uniques." Thesis, Lyon 2, 2014. http://www.theses.fr/2014LYO20124/document.

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Les difficultés à interagir dans le monde social et à s’y adapter sont une plainte centrale des personnes souffrant de troubles psychiatriques et notamment de schizophrénie ou de troubles apparentés. Ces difficultés, qui constituent un frein au processus de réhabilitation psychosociale, pourraient en partie être expliquées par un dysfonctionnement des processus regroupés sous le terme de cognition sociale. La cognition sociale est définie comme la capacité à construire des représentations sur soi-même et autrui, et sur les relations entre soi et les autres, ainsi qu’à utiliser ces représentati

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Khan, Abdul Kareem. "Electrostaticanalisys the Ras active site." Doctoral thesis, Universitat Pompeu Fabra, 2009. http://hdl.handle.net/10803/7161.

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La preorganització electrostàtica del centre actiu s'ha postulat com el mecanisme genèric de l'acció dels enzims. Així, alguns residus "estratègics" es disposarien per catalitzar reaccions interaccionant en una forma més forta amb l'estat de transició, baixant d'aquesta manera el valor de l'energia dactivació g cat. S'ha proposat que aquesta preorientació electrostática s'hauria de poder mostrar analitzant l'estabilitat electrostàtica de residus individuals en el centre actiu.<br/>Ras es una proteïna essencial de senyalització i actúa com un interruptor cel.lular. Les característiques

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Ghimire, Ekaraj. "Evaluation of One-Dimensional and Two-Dimensional HEC-RAS Models for Flood Travel Time Prediction and Damage Assessment Using HAZUS-MH: A Case Study of Grand River, Ohio." Youngstown State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1558558269011099.

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FRACCALVIERI, DOMENICO. "Comparison of protein dynamics: a new methodology based on self-organizing maps." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2011. http://hdl.handle.net/10281/19615.

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The deep relation between dynamics, in terms of both global and local flexibility, and function of proteins is now widely acknowledged. Flexibility is involved in protein binding to small molecules as well as in mechanisms involving domain motions and is also at the basis of signal transduction processes and allosteric interactions. Computational methods, and in particular Molecular-Dynamics (MD) simulations, are widely applied in the investigation of a wide range of dynamic properties and processes that occur in the ps to μs timescale. By means of MD simulations a large ensemble of molecular

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Rodriguez, Caceres Adrian Rigoberto, and Fuchs Marysabel Valenzuela. "Propuesta de mejora del plan de gestión de mantenimiento basado en RCM y Lean Office en el proceso de inyección de polímeros." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/655147.

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La propuesta es el diseño de una propuesta para mejorar la implementación del plan de gestión de mantenimiento en el proceso de moldeo por inyección de polímeros basado en la filosofía de las metodologías Lean Office y RCM. La aplicación se lleva a cabo en una empresa peruana de inyección de plástico donde se identificó el uso inadecuado del plan de Gestión de Mantenimiento, causado por la baja disponibilidad de repuestos y personal, el porcentaje de materia prima reprocesada y el deterioro de las Máquinas de moldeo. La importancia de resolver este problema es reducir la baja confiabilidad del

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Leduc, Alexandre. "Etude par la simulation et l'expérimentation de la production d'ions métalliques Calcium à l'aide d'une source d'ions du type Résonance Cyclotronique Electronique." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMC239.

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Dans le cadre du projet SPIRAL2, la source d'ions à la résonance cyclotronique électronique (RCE) PHOENIX V3 (amélioration par rapport à la précédente version PHOENIX V2) a été développée afin d'augmenter la production d'ions avec un A/Q=3. La source vise principalement la production d'ions métalliques. Pour cela, des atomes métalliques sont sublimés dans un four avant d'être injectés dans la source d'ions. Lors de la production de tels faisceaux d'ions, la grande majorité des atomes se fixe au niveau de la paroi de la chambre à plasma et y reste. Ces pertes mènent à une faible efficacité glob

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Lakshantha, Wickramaarachchige Jayampath. "Ion Beam Synthesis of Binary and Ternary Transition Metal Silicide Thin Films." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc955104/.

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Among the well-known methods to form or modify the composition and physical properties of thin films, ion implantation has shown to be a very powerful technique. In particular, ion beam syntheses of binary iron silicide have been studied by several groups. Further, the interests in transition metal silicide systems are triggered by their potential use in advanced silicon based opto-electronic devices. In addition, ternary silicides have been by far less studied than their binary counterparts despite the fact that they have interesting magnetic and electronic properties. In this study, we inves

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Hilber, Patrik. "Component reliability importance indices for maintenance optimization of electrical networks." Licentiate thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-274.

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Cojocaru, Vlad. "Molecular motions at the 5 stem-loop of U4 snRNA: Implications for U4/U6 snRNP assembly." Doctoral thesis, [S.l.] : [s.n.], 2005. http://webdoc.sub.gwdg.de/diss/2005/cojocaru.

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Hilber, Patrik. "Maintenance optimization for power distribution systems." Doctoral thesis, Stockholm : Electrical Engineering, Elektrotekniska system, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4686.

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Wattanasoontorn, Voravika. "Serious games for health and medicine. A cardiopulmonary resuscitation (CPR) case study." Doctoral thesis, Universitat de Girona, 2013. http://hdl.handle.net/10803/128270.

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Serious games are video games designed to provide specific expertise, knowledge and skills to the player, going beyond pure entertainment. In this thesis we present a classification of serious games for health and medicine that have been proposed in the last decade. We propose LISSA a serious game designed to teach the cardiopulmonar resuscitation protocol (RCP). In the context of LISSA, we study the visual realism of 3D serious games and their elements, evaluating photorealistic and non-photorealistic effects and camera position in first and third person. In addition, we study the physical re

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Ben, Ammar Amira. "Approche cross-layer pour la minimisation d’énergie dans les réseaux de capteurs sans fil." Thesis, Paris, CNAM, 2018. http://www.theses.fr/2018CNAM1191/document.

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Les réseaux de capteurs sans fil (RCSF) sont des réseaux ad hoc généralement constitués d’entités autonomes miniaturisées appelés noeuds capteurs pouvant communiquer entre eux par liaison radio. Les RCSF ont suscité beaucoup d’engouement dans la recherche scientifique en raison notamment des nouveaux problèmes de routage sous forte contrainte de durée de vie du réseau et de faibles capacités des noeuds.Ce type de réseau diffère des réseaux filaires par ses caractéristiques et limitations qui ont motivé le développement d’une nouvelle approche de conception cross-layer ignorant certains paradig

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Ben, Ammar Amira. "Approche cross-layer pour la minimisation d’énergie dans les réseaux de capteurs sans fil." Electronic Thesis or Diss., Paris, CNAM, 2018. http://www.theses.fr/2018CNAM1191.

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Les réseaux de capteurs sans fil (RCSF) sont des réseaux ad hoc généralement constitués d’entités autonomes miniaturisées appelés noeuds capteurs pouvant communiquer entre eux par liaison radio. Les RCSF ont suscité beaucoup d’engouement dans la recherche scientifique en raison notamment des nouveaux problèmes de routage sous forte contrainte de durée de vie du réseau et de faibles capacités des noeuds.Ce type de réseau diffère des réseaux filaires par ses caractéristiques et limitations qui ont motivé le développement d’une nouvelle approche de conception cross-layer ignorant certains paradig

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Sun, Jie. "Intelligent flood adaptative contex-aware system." Thesis, Université Clermont Auvergne‎ (2017-2020), 2017. http://www.theses.fr/2017CLFAC076/document.

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A l’avenir, l'agriculture et l'environnement vont pouvoir bénéficier de plus en plus de données hétérogènes collectées par des réseaux de capteurs sans fil (RCSF). Ces données alimentent généralement des outils d’aide à la décision (OAD). Dans cette thèse, nous nous intéressons spécifiquement aux systèmes sensibles et adaptatifs au contexte basés sur un RCSF et un OAD, dédiés au suivi de phénomènes naturels. Nous proposons ainsi une formalisation pour la conception et la mise en œuvre de ces systèmes. Le contexte considéré se compose de données issues du phénomène étudié mais également des cap

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Cimentada, Jorge. "Educational institutions and their effect on inequality: three papers on educational systems and inequality of achievement and opportunity." Doctoral thesis, Universitat Pompeu Fabra, 2019. http://hdl.handle.net/10803/667640.

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By placing particular attention to the socio-economic dimension, this thesis explores the role of three pillars of an educational system: decentralization, early education and curricular tracking. The first article focuses on an experiment in Mexico that aimed to increase parental empowerment in the school's decision-making. Results show that increased participation produced an increase in cognitive abilities, however, this was mediated by the SES of the student. The second article brings an international perspective by comparing the evolution of the achievement gap over time in 32 countries.

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Chuang, Kai-Chieh, and 莊凱傑. "The design and implementation of DVB-RCS satellite system over the NCTUns Network Simulator." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/41302046280408858395.

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Bakhsh, Anis. "Modeling and simulation of forced circulation evaporation crystallizer." Thesis, 2013. http://ethesis.nitrkl.ac.in/6617/1/M._Tech.(Res.)-610CH308.pdf.

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Crystallization is an effective process of forming a solid phase from solution and crystallizer is the equipment used for industrial crystallization operations. There has been a lot of experimental research work carried out for understanding and improving crystallization operations in the past years, several aspects relating to the crystal growth, nucleation, breakage, type of crystallization process, design of crystallizer and scale up of crystallizers. It is difficult to analyze complex hydrodynamic behaviour in crystallizer by experiment. In last decade a good number of works has been carr

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Wu, Huali. "Heat Transfer Simulation of Reactor Cavity Cooling System Experimental Facility using RELAP5-3D and Generation of View Factors using MCNP." Thesis, 2013. http://hdl.handle.net/1969.1/151265.

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As one of the most attractive reactor types, The High Temperature Gas-cooled Reactor (HTGR) is designed to be passively safe with the incorporation of Reactor Cavity Cooling System (RCCS). In this paper, a RELAP5-3D simulation model is set up based on the 1/16 scale experimental facility established by Texas A&M University. Also, RELAP5-3D input decks are modified to replicate the experiment procedures and the experimental results are compared with the simulation results. The results show there is a perfect match between experimental and simulation results. Radiation heat transfer dominates

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LIANG-TA, TU, and 凃良達. "A Simulation Study on Applying HEC-RAS Inundation Model in Guidan Stream Watershed." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/10115428853980945342.

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碩士<br>國立屏東科技大學<br>水土保持系所<br>97<br>Taiwan locates in subtropical zone of meteorological condition and gets plenty of raining in monsoon and typhoon season，The mean annual precipitation reach 2510mm；Because of the unequal rainfall distribution in space and time and the steep slope of stream bed heavy storm usually cause serious damages both in human life and properties. Therefore, this research used the recorded data from rainfall station near Guidan stream and to estimate flood frequency analysis. The methodology adopted to estimate design peak flow rates for different return periods. The impor

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Sehoana, Kabelo Albert. "Simulation of natural circulation in an air-cooled Reactor Cavity Cooling System using Flownex / Kabelo Albert Sehoana." Thesis, 2014. http://hdl.handle.net/10394/15542.

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Nuclear reactors with improved safety concepts are currently being studied within the nuclear engineering community, with a focus on passive safety features. One of these reactor concepts is the Very High Temperature gas-cooled Reactor (VHTR) of which the Reactor Cavity Cooling Systems (RCCS) is seen as an integral and crucial part of the passive safety concept. Considerable validation and development of the necessary software tools is required to perform analysis and designs of these future reactor concepts. The primary objective of this study is to establish a methodology for the creation of

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Stites, Edward Cooper. "Network analysis of oncogenic Ras activation /." 2008. http://wwwlib.umi.com/dissertations/fullcit/3289596.

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Chiao-YaChang and 張喬亞. "Integration of HEC-RAS and FLO-2D Models for Inundation Simulation in Dianbao River Basin." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/34929623894047107875.

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碩士<br>國立成功大學<br>水利及海洋工程學系碩博士班<br>101<br>This study aims to integrate HEC-RAS and FLO-2D models for inundation simulation and assess their performances. The study area focuses on the regional drainage of Dianbao River in Kaohsiung whose low-relief catchment is easily affected by tide level and is hard to drain overland flow properly. In the event that large mountain runoff or storm surge resulting from intense rainfall happens, the catchment often suffers from serious inundation due to the rise of external floodwater and the blocked drainage of internal floodwater. Thus, by analyzing the inunda

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