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Dissertations / Theses on the topic 'WSe₂'

Author: Grafiati
Published: 9 November 2024
Last updated: 31 July 2025

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1

Dippel, Markus. "Charakterisierung des Schmelzverhaltens selbstorganisierter Indium-Nanostrukturen auf WSe₂-Substraten /." Konstanz, 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=96136629X.

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2

Maier, Andreas. "Strukturelle und magnetische Eigenschaften von CoPt 3-Nanostrukturen auf WSe 2." [S.l. : s.n.], 2002. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9683803.

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3

Trinh, Le-Huy. "Antennes reconfigurables pour les applications mobiles et réseaux sans fil." Thesis, Nice, 2015. http://www.theses.fr/2015NICE4047/document.

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Au cours de ces dernières années, les technologies de télécommunication ont fait d'énormes progrès, notamment dans les communications mobiles et les réseaux de capteurs sans fil (WSN). Pour répondre à l’augmentation de la capacité de transmission et à l’amélioration de la qualité des canaux de communications mobiles, l’élargissement de la bande de fonctionnement est nécessaire par l'utilisation d'antennes reconfigurables en fréquence. En outre, dans les applications WSN, afin de réduire les collisions, d’augmenter la distance de communication et d'optimiser la consommation, l’utilisation d’ant
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4

Digiere, Adriano Ricardo [UNESP]. "Camada de gerenciamento para comunicação entre computadores baseada em redes sem fio (WSE-OS)." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/98660.

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Made available in DSpace on 2014-06-11T19:29:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-03-31Bitstream added on 2014-06-13T19:59:30Z : No. of bitstreams: 1 digiere_ar_me_sjrp.pdf: 1496121 bytes, checksum: 2cc2450b0bec5e0610a6820222483893 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O maior custo de propriedade de computadores não é o hardware ou o software, mas sim o tempo que os profissionais de informática gastam em suporte e manutenção dos ambientes computacionais. Em um conglomerado de computadores em rede, cada computador torna- se uma e
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5

Zhang, Rui. "Experimental and theoretical studies of electronic and mechanical properties of two-dimensional (2D) WSe₂." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/33228.

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Two-dimensional (2D) transition metal dichalcogenides (TMDs) with intrinsic band gaps are considered to be prospective alternatives for graphene in the applications of emerging nano-semiconductor devices. As a significant member of the TMDs family, WSe₂ with superior optical properties attracts increasing attention, especially in the optoelectronics. In this thesis, the electronic and mechanical properties of 2D WSe₂ have been studied experimentally and theoretically. Firstly, the fabrication of substrate-supported and suspended pre-patterned WSe₂ FETs with the low-cost optical lithography and
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6

Digiere, Adriano Ricardo. "Camada de gerenciamento para comunicação entre computadores baseada em redes sem fio (WSE-OS) /." São José do Rio Preto : [s.n.], 2011. http://hdl.handle.net/11449/98660.

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Orientador: Roberta Spolon<br>Banca: João Paulo Papa<br>Banca: Regina Helena Carlucci Santana<br>Resumo: O maior custo de propriedade de computadores não é o hardware ou o software, mas sim o tempo que os profissionais de informática gastam em suporte e manutenção dos ambientes computacionais. Em um conglomerado de computadores em rede, cada computador torna- se uma entidade gerenciada individualmente, o que gera contínuas solicitações de alterações de configuração, como instalação de atualizações de software, conexão e configuração de periféricos, criação de perfis de e-mail e aplicação de pa
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7

Crepaldi, Luis Gustavo [UNESP]. "Middleware de comunicação entre objetos distribuídos para gerenciamento de computadores baseado em redes sem fio (WSE-OS)." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/98663.

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Made available in DSpace on 2014-06-11T19:29:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-03-31Bitstream added on 2014-06-13T18:59:19Z : No. of bitstreams: 1 crepaldi_lg_me_sjrp.pdf: 1446703 bytes, checksum: 5212981cdddeca5acc9e64906c893d50 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Universidade Estadual Paulista (UNESP)<br>Para simplificar o gerenciamento de computadores, vários sistemas de administração estruturados por conexões físicas adotam técnicas avançadas para gestão de configuração de software. No entanto, a forte ligação entre hard
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8

Crepaldi, Luis Gustavo. "Middleware de comunicação entre objetos distribuídos para gerenciamento de computadores baseado em redes sem fio (WSE-OS) /." São José do Rio Preto : [s.n.], 2011. http://hdl.handle.net/11449/98663.

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Resumo: Para simplificar o gerenciamento de computadores, vários sistemas de administração estruturados por conexões físicas adotam técnicas avançadas para gestão de configuração de software. No entanto, a forte ligação entre hardware e o software faz com que haja uma individualização desta gerência, além da penalização da mobilidade e ubiqüidade do poder computacional. Neste cenário, cada computador torna-se uma entidade individual a ser gerenciada, exigindo operações manuais de configuração da imagem de sistema. Tecnologias que oferecem gestão centralizada baseadas em conexões físicas client
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9

ESSAIDI, HATEM. "Contribution a l'obtention et a la caracterisation de couches minces de wse#2 pour applications au photovoltaique." Nantes, 1995. http://www.theses.fr/1995NANT2055.

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Suite aux travaux anterieurs realises au laboratoire sur les dichalcogenures de metaux refractaires, l'objet de ce travail a ete d'optimiser les procedes d'obtention de couches minces de wse#2, afin que leurs proprietes soient le plus proche possible de celles des monocristaux, de facon a pouvoir envisager leur utilisation dans le domaine photovoltaique. A cette fin deux techniques ont ete utilisees: la synthese simple a partir d'une couche mince de tungstene pulverise et d'un grain de selenium, le tout etant recuit dans un tube scelle sous vide. Si l'adherence des couches est fortement amelio
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10

Treubel, Frank. "Wachstum, Struktur und Magnetismus von gamma-Mn auf Pt(111) und CoPt3̀(111) auf WSe 2(111)." [S.l. : s.n.], 2000. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB8885149.

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11

Treubel, Frank. "Wachstum, Struktur und Magnetismus von gamma-Mn auf Pt(111) und CoPt 3(111) auf WSe 2(0001) /." [S.l. : s.n.], 2000. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB8875814.

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12

Frey, Michael [Verfasser]. "WSE-Sensor zur Erkennung feuchter, nasser, schnee- und eisbedeckter Fahrbahnoberflächen : Beitrag zum Dynamischen Fahrbahn Informations System DFIS / Michael Frey." Aachen : Shaker, 2005. http://d-nb.info/1181621186/34.

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13

Yau, Louis. "Simulation analysis of learning and expectations in the stock exchange : a case study with the Warsaw Stock Exchange (WSE)." Thesis, University of Leicester, 1996. http://hdl.handle.net/2381/35527.

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Increasingly, it has become difficult to explain economic phenomena within the neo-classical framework in a period of changes when learning about the changes precedes any costly adaptation. The process of learning has been argued to be a missing element. It is defined as the continuous inference from observable data the unobservable state and structure of the market that are typically unknown. Learning is more detectable during rapid economic changes and when the gain- loss differential is critically enormous, like in the financial markets. Hence, an interactive learning model is formulated to
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14

Lima, Leonardo José de [UNESP]. "Proposta para aumento da escalabilidade do sistema WSE-OS por meio do escalonamento de conexões e gerenciamento da replicação de dados dos servidores." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/110380.

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Made available in DSpace on 2014-11-10T11:09:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-08-07Bitstream added on 2014-11-10T11:58:47Z : No. of bitstreams: 1 000787445.pdf: 974406 bytes, checksum: 3e701ceadf5e053926fd1e9cf1e9e039 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Devido a queda gradual no custo de aquisição de novos computadores, há cada vez mais dispositivos computacionais adentrando o mercado. A grande quantidade de novos dispositivos gera heterogeneidade entre eles e esta dificulta a administração de ambientes computacionais, pois
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15

Lima, Leonardo José de. "Proposta para aumento da escalabilidade do sistema WSE-OS por meio do escalonamento de conexões e gerenciamento da replicação de dados dos servidores /." São José do Rio Preto, 2013. http://hdl.handle.net/11449/110380.

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Orientador: Roberta Spolon<br>Banca: José Remo Ferreira Brega<br>Banca: Sarita Mazzini Bruschi<br>Resumo: Devido a queda gradual no custo de aquisição de novos computadores, há cada vez mais dispositivos computacionais adentrando o mercado. A grande quantidade de novos dispositivos gera heterogeneidade entre eles e esta dificulta a administração de ambientes computacionais, pois é necessário manter os sistemas funcionando em compatibilidade com dispositivos bastante distintos simultaneamente. O sistema WSE-OS propõe uma solução de centralização de dados e recursos que aborda o problema da hete
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16

BENHIDA, SAMIR. "Mise au point de techniques d'obtention de couches minces de wse#2 et de cuinse#2, caracterisation en vue d'applications dans le domaine photovoltaique." Nantes, 1992. http://www.theses.fr/1992NANT2043.

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Les dichalcogenures de metaux refractaires sont des composes dont les proprietes chimiques et photoelectriques sont susceptibles d'applications dans le domaine de la conversion d'energie photoelectrochimique. Le wse#2, de part la valeur de sa bande interdite (1. 35 ev) est l'un des plus prometteurs de ces composes. L'objet de ce travail a ete de mettre au point des techniques d'obtention de ce materiau. A cette fin les montages de depot utilises ont ete optimises de facon a obtenir les couches desirees. Celles-ci ont ete caracterisees par diffraction de rayons x, microscopie a balayage et a tr
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17

Mahmoudi, Aymen. "Propriétés électroniques des dichalcogénures bi-dimensionnels de métaux de transition." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP106.

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Le sujet de cette thèse s'inscrit dans la thématique des matériaux bidimensionnels (2D) d'épaisseur atomique. L'étude des propriétés optiques et électroniques des hétérostructures hybrides à base de dichalcogénures de métaux de transition (TMD) MX₂ (M = Mo, W ; X = S, Se, Te) est aujourd'hui considérée avec attention en raison de futures applications et d'études plus fondamentales. Plus que leurs propriétés physiques intrinsèques, en configuration multicouche, ces matériaux offrent des phénomènes physiques prometteurs tels que la modulation de la valeur de la bande interdite, la ferroélectrici
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18

Zhang, Nan. "Propriétés électroniques de MoS2 / MoSe2van der Waals heterostructures." Thesis, Toulouse, INSA, 2020. http://www.theses.fr/2020ISAT0017.

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Le sujet de ma thèse concerne l’étude des propriétés optiques fon-damentales des dichalcogénures des métaux de transition (DCMT)des couches ultra-mince et plus précisément les hétérostuctures con-stituées de matériaux MX2(où M est du molybdène (Mo) et X dusoufre (S) ou du sélénium (Se)), liées entre elles par des interactionsde type Van der Waals. Le premier chapitre de la thèse a été con-sacré pour la description des propriétés fondamentales générales des(DCMT) exfolié et amincie jusqu’une monocouche. Egalement, leshétérostuctures à base des DCMT ont été largement décrites.Le chapitre 2 décri
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19

Oskarsson, Lina. "Regnvatteninsamling : Vattenbesparingspotential i svenska förhållanden med fallstudie i Järlåsa." Thesis, Uppsala universitet, Luft-, vatten- och landskapslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-417853.

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Vattenbesparing och alternativa lösningar för att tillgodose vattenbehovet har blivit mer aktuellt de senaste åren med torka. Regnvatteninsamling för hushållsanvändning används redan på många platser runtom i världen men är begränsad i Sverige idag. Syftet är att dels undersöka en lämplig dimensionering av ett system för regnvatteninsamling för hushåll i Jälåsa och att identifiera olika drivkrafter och hinder. Metoden i denna studie har varit dels massbalans- och effektivitetsberäkningar för att se hur mycket regnvatten som kan samlas in och dels intervjuer med två teknikleverantörer och fem k
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20

Zielinski, Kamil. "Langfristige Renditeentwicklung nach Börseneinführungen und Kapitalerhöhungen am polnischen Kapitalmarkt." Doctoral thesis, Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät, 2013. http://dx.doi.org/10.18452/16837.

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Die vorliegende Studie entstand, um die langfristige Renditeentwicklung polnischer Aktien nach Börseneinführungen und Kapitalerhöhungen in den Jahren 1994-2008 zu untersuchen. Ein besonderes Augenmerk richtet sich dabei auf die Erkennung und Analyse der performancerelevanten Unternehmenseigenschaften sowie auf die Erklärung der festgestellten Marktanomalien mit Hilfe ausgewählter Modellansätze. Die empirischen Analysen wurden aus dem Blickwinkel eines Kleininvestors durchgeführt, wodurch die meisten Ergebnisse, neben dem wissenschaftlichen Wert, eine hohe Praxisrelevanz besitzen. Die Untersuch
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21

Niste, Vlad. "WS2 nanoparticles as lubricant additives." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/383967/.

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Due to their excellent tribological properties and potential to replace problematic lubricant additives currently in use, WS2 nanoparticles (NPs) have spurred considerable interest from academia and industry over the last two decades to decipher their mechanism of action. To elucidate the mechanism, this study carried out tribological tests at high pressures and low/high temperatures (40 and 100ºC) and investigated the tribofilm generated on the wear track and its wear and friction properties. It was found that WS2 NPs react with the metal substrate at high temperatures to form a chemical trib
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22

Schwartz, Kerry, Candice Rupprecht, Mary Ann Stoll, et al. "Water Scene Investigation (WSI) Program." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2013. http://hdl.handle.net/10150/298147.

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23

Krajíček, Tomáš. "Analýza multicastových protokolů pro WSN." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219337.

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This work deals with the issue of multicast traffic over ZigBee wireless network and implementation of corresponding protocols in to MATLAB background, further with realisation of multicast data transmission, consequential energy performance evaluation and comparation of particular protocols.
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24

Takahshi, Naoko. "Flagella synthesis in Rhodobacter sphaeroides WS8." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259820.

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25

Brás, Luís Pedro Marques. "Sectorial antennas for WSN localization system." Doctoral thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/12857.

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Doutoramento em Engenharia Eletrotécnica<br>This work investigates low cost localization systems (LS) based on received signal strength (RSS) and integrated with different types of antennas with main emphasis on sectorial antennas. The last few years have witnessed an outstanding growth in wireless sensor networks (WSN). Among its various possible applications, the localization field became a major area of research. The localization techniques based on RSS are characterized by simplicity and low cost of integration. The integration of LS based on RSS and sectorial antennas (SA) was proven to p
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26

Bendeck, Fawsy. "WSM-P workflow semantic matching platform." München Verl. Dr. Hut, 2008. http://d-nb.info/99216298X/04.

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27

Bejoy, B. J., and B. Paramasivan. "RELIABILITY ORIENTED TRANSPORT PROTOCOL IN WSN." IJCSN Journal, 2012. http://hdl.handle.net/10150/229012.

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Wireless Sensor Network consists of tens or thousands of sensor nodes scattered in a physical space and one or more Base stations or Sinks. Even thought developed for military applications now they find a wide variety of civilian applications also. Some of the applications are Target tracking, Animal monitoring, Vehicle monitoring. The need (or lack thereof) for reliability in a sensor network is firmly dependent upon the specific application the sensor network is used for. Some applications like re-tasking or reprogramming sensor nodes [upgrading software or algorithms, adding codes
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Zafar, Muhammad Asif, and Zeshan Aslam Khan. "Fire Detection in Coal Mines Using WSN." Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-5030.

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<p>Fire Detection in Coal Mines Using WSN is an application for monitoring and detection of fire in coal mines using wireless sensor networks. The application uses BDI (Belief, Desire and Intention) based multi agent model and its implementation on sensor networks. The Language which is interpreted by Jason is an extension of AgentSpeak; this is based on the BDI Architecture. The BDI agents are reactive planning systems, systems that are not meant to compute the value of a function and terminate, but rather designed to be permanently running, reacting to some form of event. The distributed mod
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Wang, Teng. "Water Quality Monitoring System based on WSN." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-107735.

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With the growth of economy in recent years, the water quality monitoring becomes a critical issue about water pollution. Water Quality Monitoring has a big influence on the aquaculture management, waste water treatment, drinking water and some other applications. There is a trend to build a wireless sensor network system for water quality monitoring. This system detects pH, conductivity, dissolved oxygen, turbidity, temperature, ORP (Oxidation-Reduction Potential), BOD (Biochemical Oxygen Demand), Flow and etc. Some important electrochemical parameters of water quality should also be detected,
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Sha, Mao Xuan, Xi Tao Wang, and Shu Zuo. "WSN Setup by means of Software Agents." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16450.

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A significant challenge in the Wireless Sensor Networks (WSN) research field is to find flexible and energy efficient strategies to perform the network setup and configuration to accomplish specified sensing missions. This thesis presents an approach which uses mobile agents to disseminate and allocate sensing missions to the sensor nodes. The addressed problem refers to the selection of appropriate nodes to perform the sensing mission, by using a decentralized approach supported by mobile software agents. Traditional approaches to deal with WSN setup use the pre-planned strategies, which are
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Hassmund, David. "WSC Wind Science Centre : Centret för vindenergi." Thesis, Mittuniversitetet, Avdelningen för industridesign, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-20246.

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Målet med projektet har varit att designa en byggnad där information om vindkraft kan presenteras. Utgångspunkten iprojektet har varit upplevelsen med ett antal studier som grund. Området som berörs är Borgsjö som är optimalt läge fördenna typ av informationsbyggnad. Genom studiebesök, enkätundersökning, intervjuer och analys har ett antal konceptframställts. För att engagera besökarna så har även en enhet för utomhusbruk tagits fram där användaren med sin egenstyrka kan generera elektricitet och jämföra med miniverket. Slutkonceptet är en sluten byggnad med en interaktiv projektionoch statisk
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Koh, Kenneth Johannesen. "Analysis of Key Industrial WSN MAC Protocols." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for telematikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-27346.

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This paper looks at two MAC protocols for wireless sensor networksfor use in industrial applications developed at the Ubicom Lab, at theUniversity of Ulsan. A theoretical comparison of the MAC protocolsare performed to understand more about the benefits and downsidesto both of them, and experimental scenarios to validate the theoreticalanalysis are suggested. Theoretical analysis suggests that BigMAC hasan advantage in environments with high interference and frequent linkbreaks, while I-MAC has an advantage when the network topology isstable.
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AUZA, JOSE MAURICIO NAVA. "PERFORMANCE OF ENERGY EFFICIENT ALGORITHMS IN WSN." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2013. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35321@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>As redes de sensores sem fio se constituem numa área que outorga grandes oportunidades para a oferta de uma série de aplicações inovadoras e com baixo custo. Os dispositivos destas redes são bastantes pequenos e sua fonte de alimentação são baterias. O tempo de vida destas é limitado, limitando assim o tempo da vida dos sensores e da rede como um todo. Por esta razão nos últimos anos o tema de eficiência energética tem atraído grande interess
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Elliott, Bradley Jay. "Optimization of WSU Total Ankle Replacement Systems." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1341333609.

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35

Toldov, Viktor. "Adaptive MAC layer for interference limited WSN." Thesis, Lille 1, 2017. http://www.theses.fr/2017LIL10002/document.

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A l'époque de l'Internet des Objets, le nombre de dispositifs communicants ne cesse d'augmenter. Souvent, les objets connectés utilisent des bandes de fréquences « industriel, scientifique et médical (ISM) » pour effectuer les communications. Ces bandes sont disponibles sans licence, ce qui facilite le déploiement de nouveaux objets connectés. Cependant, cela mène aussi au fait que le niveau d'interférences augmente dans les bandes ISM. Les interférences ont non seulement un impact négatif sur la qualité de service, mais aussi elles causent des pertes de messages couteuses en énergie, ce qui e
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Michopoulos, Vasilis. "Congestion and medium access control in 6LoWPAN WSN." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/11463.

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In computer networks, congestion is a condition in which one or more egressinterfaces are offered more packets than are forwarded at any given instant [1]. In wireless sensor networks, congestion can cause a number of problems including packet loss, lower throughput and poor energy efficiency. These problems can potentially result in a reduced deployment lifetime and underperforming applications. Moreover, idle radio listening is a major source of energy consumption therefore low-power wireless devices must keep their radio transceivers off to maximise their battery lifetime. In order to minim
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Firouzbakhsh, Navid, and Karchegani Arash Mokhtari. "Internet to WSN configuration and access using 6LoWPAN." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-26607.

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The Internet of Things mission is to connect any objects to the Internet, in order to provide the ability to access everything, everywhere. It will enable people to control and monitor their environment in a very convenient way. In order to fulfill the Internet of Things mission, one idea is to wrap a non-IP based protocol stack in the objects equipped with sensors, actuators and computing resources to enable them to be connected to the Internet through a protocol translation gateway. An alternative and competing idea, is to embed the TCP/IP stack into such smart objects, enabling them to inte
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Dong, Ni. "Building control and automation via PID and WSN." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199344.

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Li, Zhitan. "The Optimization of Solar Energy Harvesting in WSN." Thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-35560.

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In recent year, wireless sensor networks have gradually become an indispensable part of people's daily lives. Energy consumption and energy harvesting play an important role in these systems. In outdoor, there is no doubt that solar energy is more suitable to powering the wireless sensor nodes. Although the energy consumption of these systems has been greatly reduced and the lifetime of sensor nodes also be improved through the larger capacity of supercapacitor or larger size of solar panel. But it will generate another kind of squander, how to choose a suitable solar panel and supercapacitor
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Goulart, Rodrigo Rafael Vilarreal. "Um modelo híbrido para o WSD em biomedicina." Pontifícia Universidade Católica do Rio Grande do Sul, 2013. http://hdl.handle.net/10923/1628.

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Made available in DSpace on 2013-08-07T18:43:20Z (GMT). No. of bitstreams: 1 000448850-Texto+Completo-0.pdf: 2763654 bytes, checksum: 430bc12ce50b74821fe6a8aa37994260 (MD5) Previous issue date: 2013<br>This work studies Word Sense Disambiguation (WSD) in the Biomedicine domain for English language, using external knowledge sources. Among the existing proposals for the selection of a sense for an ambiguous word, there is the graph-based approach. This approach uses a metric in the evaluation of graphs containing candidates to the correct sense for the ambiguous word. In this research, a set o
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Peng, Tingqing. "WSN Routing Schedule Based on Energy-aware Adaptation." Thesis, Mittuniversitetet, Institutionen för informationssystem och –teknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-39223.

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In view of the problem of uneven load distribution and energy consumption among nodes in a multi-hop wireless sensor network, this research constructs the routing schedule problem as a MOP (Multi-objective Optimization Problem), and proposed an energy-aware routing optimization scheme RDSEGA based on multi-objective optimization. In this scheme, in order to avoid the searching space explosion problem caused by the increase of nodes, KSP Yen's algorithm was applied to prune the searching space, and the candidate paths selected after pruning are recoded based on priority. Then adopted the improv
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Li, Jiakai. "AI-WSN: Adaptive and Intelligent Wireless Sensor Networks." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1341258416.

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43

Karlsson, Tom, and Mike Persson. "Outdoor localization in long range WSN using trilateration." Thesis, Linköpings universitet, Fysik och elektroteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-141689.

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This thesis report investigates how good position estimations that can be done outdoors with received signal strength indication (RSSI) trilateration for sub 1-GHz radio nodes. A custom network and an empirical distance model have been created as well as a technique for weighting multiple distance estimations, using wrapped normal probability density functions. The developed localization system was tested on an open area of one square kilometer, to estimate a node’s position on various locations. To evaluate the localization system, mean and median error of the estimated positions were calcula
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Votava, Martin. "Lokalizační protokol pro WSN s podporou mobility uzlů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218265.

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Work is focused on wireless sensor networks.The main theme is the mobility and localization in these networks. This work describes different methods and capabilities of mobile and localization schemes. This work describes a new localization protocol for wireless sensor networks. Finally, there is included a new protocol in the simulation at Network Simulator 2 and evaluate the results obtained.
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Ceriotti, Matteo. "Guaranteeing Communication Quality in Real World WSN Deployments." Doctoral thesis, Università degli studi di Trento, 2011. https://hdl.handle.net/11572/369149.

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Networks of smart interconnected objects have allowed the integration of the artificial world into the physical one. The interaction over a wireless medium is simultaneously the technology enabler and the primary hindering factor. The complexity and variability of the behavior of low power wireless communication is one of the challenges making the design and deployment of a system based on this technology a unique and demanding experience. In this thesis, we describe the deployment of two operational systems for structural health monitoring and adaptive lighting, undertaken by our research gro
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Ceriotti, Matteo. "Guaranteeing Communication Quality in Real World WSN Deployments." Doctoral thesis, University of Trento, 2011. http://eprints-phd.biblio.unitn.it/563/1/thesis.pdf.

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Networks of smart interconnected objects have allowed the integration of the artificial world into the physical one. The interaction over a wireless medium is simultaneously the technology enabler and the primary hindering factor. The complexity and variability of the behavior of low power wireless communication is one of the challenges making the design and deployment of a system based on this technology a unique and demanding experience. In this thesis, we describe the deployment of two operational systems for structural health monitoring and adaptive lighting, undertaken by our research gro
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Yaoming, Chen. "A smart gateway design for WSN health care system." Thesis, Jönköping University, JTH. Research area Robust Embedded Systems, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-11826.

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<p>Using Wireless Sensor Networks (WSNs) in health care system has yielded a tremendous effort in recent years. However, in most of these researches tasks like sensor data processing, health states decision making and emergency messages sending are done by a remote server. Numbers of patient with large scale of sensor data consume a lot of communication resource, bring a burden to the remote server and delay the decision time and notification time. In this paper,<strong> </strong>we present a prototype of a smart gateway that we have implemented. This gateway is an interconnection and services
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Gao, Jie. "Intelligent and Interactive Package Based on RFID and WSN." Licentiate thesis, KTH, Elektroniksystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-49765.

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An intelligent and interactive package can interact with people smartly, safely and friendly. It involves many technologies such as electronics, optics, biologic, magnetics and electro-mechanics. By combined with Radio Frequency Identification (RFID) and Wireless Sensor Network (WSN), intelligent and interactive packaging technology has been an emerging and global research topic over the years.    In this thesis, a new technology, named Controlled Delamination Material (CDM), is introduced. It was primarily used in aerospace applications in the past and further developed by Stora Enso AB. A CD
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Lagana, Marcello. "Cognitive WSN access based on local WLAN traffic estimation." Thesis, KTH, Kommunikationsnät, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91890.

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The recent growth in the deployment of wireless networks that access the unlicensed ISM bands has introduced the issue of co-existence between different kinds of wireless technologies. In this work we address the enhancement of the performance of the low-cost Wireless Sensor Network nodes competing for spectrum access with the WLAN devices, that are more powerful in terms of transmission and computational power. Those low-cost WSN nodes are usually battery powered devices with low computational capabilities and limited battery capacity, thus the traditional methods for accessing the wireless s
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Mir-Shekari, Sarah Yasamin. "Glycosylation of the influenza A/WSN/33 virus haemagglutinin." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294355.

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