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Dissertations / Theses on the topic 'LARGE BANDWIDTH'

Author: Grafiati

Published: 11 September 2023

Last updated: 26 July 2025

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1

Kwon, Soun Pil. "Design of a large bandwidth scanning SQUID microscope using a cryocooled hysteretic dc SQUID." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3361.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2006.<br>Thesis research directed by: Physics. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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2

Badieirostami, Majid. "Design and implementation of ultra-high resolution, large bandwidth, and compact diffuse light spectrometers." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26644.

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Thesis (Ph.D)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Adibi, Ali; Committee Member: Bhatti, Pamela; Committee Member: Callen, William; Committee Member: Gaylord, Thomas; Committee Member: Zhou, Hao-Min. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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3

Garcia, Pardo Concepción. "Experimental characterization of the radio channel for systems of large bandwidth and multiple antennas." Thesis, Lille 1, 2012. http://www.theses.fr/2012LIL10014/document.

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La généralisation des nouvelles applications des communications sans fil nécessitera dans un avenir proche des communications très haut débit qui avoisineront 1Gb/s. Une des solutions proposées pour répondre à cette demande est basée sur l’utilisation de réseaux d’antennes à l’émission et à la réception connue sous la terminologie Multiple-Input Multiple-Output (MIMO). Plus récemment, les techniques ultra large bande (ULB) ont connu un regain d’intérêt grâce aux débits très élevés qu’offre sa grande bande passante et les faibles puissances d’émission mises en jeux. Si on envisage l’association

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4

Croce, Daniele. "End-to-end bandwidth estimation in the wide Internet." Doctoral thesis, Nice, 2010. http://www.theses.fr/2010NICE4007.

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The end-to-end Capacity and Available Bandwidth (AB) are fundamental characteristics of an Internet path and are essential for the operation of many emerging network applications. Unfortunately, ISPs have barely knowledge of the performance of the links under their control and are often unwilling to share this information. End-users are even less aware of the network conditions. Thus, several techniques have been proposed to measure the path capacity and AB just with the help of the end-hosts. However, most of these works are (i) agnostic of the underlying network technology, (ii) require a pa

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5

Al, Abed Isrà. "Measurement System at Large Bandwidth for Quality Evaluation of Electric Energy up to 150 kHz." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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Nowadays, Power Quality monitoring is an essential service many utilities perform for their industrial and other key commercial customers. Monitoring power quality has become specifically more effective in recent years due to the advent of the technology and software. Not only can a monitoring system provide information such as quality of the power and the causes of power system disturbances, but it is also able to identify problem conditions throughout the system prior they cause widespread customer complaints, equipment malfunctions, and even equipment failures. Power Quality problems are

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6

McCann, John Forrest. "On the design of large bandwidth arrays of slot elements with wide scan angle capabilities." Connect to resource, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1209590321.

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7

Mograne, Mohamed Abderrahmane. "Viscosimétrie ultrasonore ultra large bande." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTS089/document.

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Cette thèse a pour objectif d’instrumenter un contenant familier dans le domaine du biomédical et de la chimie (un tube à essai) avec des éléments piézoélectriques à ondes longitudinales (L) et d’implémenter, en les optimisant, diverses méthodes ultrasonores pour mesurer les viscosités rapidement, sans changer de banc de mesure et cela de quelques Hz à plusieurs dizaines de mégahertz au voisinage de la température ambiante. Grâce au système mis en place il est possible en quelques minutes de déterminer le comportement rhéologique du liquide, étudié en mesurant sa viscosité de cisaillement. Par

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Cook, David B. "Making All The Data Available Some Of The Time In Very Large Telemetry Volume Space Applications." International Foundation for Telemetering, 2002. http://hdl.handle.net/10150/607508.

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International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California<br>What do you do when your downlink telemetry needs outstrip your downlink bandwidth capability? The telemetry needed to support construction and operation of the largest, most complex engineering project ever undertaken, the International Space Station (ISS), already requires utilization of the full capacity of the downlink S-band capacity, yet there are additional systems and capabilities still to be added by NASA and the International Partners. The ISS Co

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9

Testa, Paolo Valerio, Bernhard Klein, Ronny Hahnel, Dirk Plettemeier, Corrado Carta, and Frank Ellinger. "On-Chip Integrated Distributed Amplifier and Antenna Systems in SiGe BiCMOS for Transceivers with Ultra-Large Bandwidth." De Gruyter, 2017. https://tud.qucosa.de/id/qucosa%3A38555.

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This paper presents an overview of the research work currently being performed within the frame of project DAAB and its successor DAAB-TX towards the integration of ultra-wideband transceivers operating at mm-wave frequencies and capable of data rates up to 100 Gbits–¹. Two basic systemarchitectures are being considered: integrating a broadband antenna with a distributed amplifier and integrate antennas centered at adjacent frequencies with broadband active combiners or dividers. The paper discusses in detail the design of such systems and their components, fromthe distributed amplifiers and c

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Urvoy, Alban [Verfasser], and Tilman [Akademischer Betreuer] Pfau. "Large bandwidth excitation of Rydberg atoms in thermal vapor : fast dynamics and strong interaction effects / Alban Urvoy ; Betreuer: Tilman Pfau." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2016. http://d-nb.info/111836922X/34.

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11

Godbole, Pushkar E. (Pushkar Eknath) Carleton University Dissertation Engineering Electrical. "A combined analogue and digital pulse compression system using large time bandwidth product signals for use in synthetic aperture radar." Ottawa, 1989.

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12

Miet, Gilles. "Towards wideband speech by narrowband speech bandwidth extension : magic effect or wideband recovery ? : application to mobile telephony." Le Mans, 2001. http://cyberdoc.univ-lemans.fr/theses/2001/2001LEMA1014.pdf.

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Cette thèse porte sur l’extension de la parole bande étroite [300-3400 Hz] vers la parole large bande [50-7000 Hz]. Cette étude est réalisée à l’aide de la modélisation de la parole et de la perception dans les bandes de fréquences autour de la bande étroite (inférieure à 300 hz et supérieure à 3400 hz). De nouveaux outils de calculs sont développés pour synthétiser la parole large bande à partir de l’analyse et de la classification de la parole bande étroite. Les différents algorithmes conçus dans le cadre de cette thèse sont évalués par des tests subjectifs statistiques, basés sur le standar

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Uznanski, Przemyslaw. "Large scale platform : Instantiable models and algorithmic design of communication schemes." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2013. http://tel.archives-ouvertes.fr/tel-00878837.

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The increasing popularity of Internet bandwidth-intensive applications prompts us to consider followingproblem: How to compute efficient collective communication schemes on large-scale platform?The issue of designing a collective communication in the context of a large scale distributed networkis a difficult and a multi-level problem. A lot of solutions have been extensively studied andproposed. But a new, comprehensive and systematic approach is required, that combines networkmodels and algorithmic design of solutions.In this work we advocate the use of models that are able to capture real-li

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Kamau, Edwin Ngugi [Verfasser], Ralf B. [Akademischer Betreuer] [Gutachter] Bergmann, and Peter [Gutachter] Lehmann. "Dynamic wave field synthesis: enabling the generation of field distributions with a large space-bandwidth product / Edwin Ngugi Kamau. Betreuer: Ralf B. Bergmann. Gutachter: Ralf B. Bergmann ; Peter Lehmann." Bremen : Staats- und Universitätsbibliothek Bremen, 2016. http://d-nb.info/1111020787/34.

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Zhang, Hao. "Circuit d'amplification Doherty intégré large bande pour applications radio cellulaires de puissance." Thesis, Poitiers, 2019. http://www.theses.fr/2019POIT2265.

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Ces travaux de recherche concernent la conception, la réalisation et la mesure des circuits d’amplification Doherty LDMOS intégrés large-bande pour stations de base, nécessaires au développement de la 5G. Suite à la recherche des techniques pour l’amélioration du rendement électrique pour des signaux à forte dynamique d’amplitude et les possibilités d’intégration, la technique Doherty a été choisie. Des études sur les structures Doherty à deux puis trois voies montrent que l’amélioration de rendement pourra être renforcée et étendue par l’ajout d’un troisième étage avec des tailles de transist

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Motaweh, Tammam. "Modélisation et validation expérimentale de nouvelles structures SOA large bande et de techniques d'élargissement de la bande passante optique." Thesis, Brest, 2014. http://www.theses.fr/2014BRES0117/document.

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L’amplification optique large bande à base de SOA est devenue indispensable pour la montée en débit des systèmes de transmissions optiques et pour pouvoir exploiter au mieux la bande optique des fibres optiques. Ce travail présente une étude théorique et expérimentale d’un SOA large bande passante développé par Alcatel Thales III-V Lab dans le cadre des projets ANR AROME et UltraWIDE. Dans cette thèse, nous avons d’abord effectué une modélisation semi-phénoménologique du gain matériau et du coefficient de gain d’une structure à base de multi-puits quantiques avec un nombre réduit de paramètres

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Jeunesse, Paulien. "Estimation non paramétrique du taux de mort dans un modèle de population générale : Théorie et applications. A new inference strategy for general population mortality tables Nonparametric adaptive inference of birth and death models in a large population limit Nonparametric inference of age-structured models in a large population limit with interactions, immigration and characteristics Nonparametric test of time dependance of age-structured models in a large population limit." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLED013.

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L’étude du taux de mortalité dans des modèles de population humaine ou en biologie est le cœur de ce travail. Cette thèse se situe à la frontière de la statistique des processus, de la statistique non-paramétrique et de l’analyse.Dans une première partie, centrée sur une problématique actuarielle, un algorithme est proposé pour estimer les tables de mortalité, utiles en assurance. Cet algorithme se base sur un modèle déterministe de population. Ces nouvelles estimations améliorent les résultats actuels en prenant en compte la dynamique globale de la population. Ainsi les naissances sont incorp

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Silva, Valter Filipe Miranda Castelão da. "Flexible management of bandwidth and redundancy in fieldbuses." Doctoral thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/2235.

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Doutoramento em Engenharia Electrotécnica<br>Os sistemas distribuídos embarcados (Distributed Embedded Systems – DES) têm sido usados ao longo dos últimos anos em muitos domínios de aplicação, da robótica, ao controlo de processos industriais passando pela aviónica e pelas aplicações veiculares, esperando-se que esta tendência continue nos próximos anos. A confiança no funcionamento é uma propriedade importante nestes domínios de aplicação, visto que os serviços têm de ser executados em tempo útil e de forma previsível, caso contrário, podem ocorrer danos económicos ou a vida de seres humanos

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Benouakta, Amina. "Conception de systèmes antennaires pour applications de supervision et de localisation dans l'Internet des objets industriel." Electronic Thesis or Diss., Université Côte d'Azur, 2024. http://www.theses.fr/2024COAZ4011.

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Cette thèse s'inscrit dans le contexte de l'Internet des Objets (Internet of Things, IoT), de l'identification et de la traçabilité d'objets dans des environnements dits complexes, réalisées au moyen de la technologie ULB (Ultra-Large Bande) dite de haute précision temporelle. L'ambition est de contribuer à l'évolution des systèmes ULB de localisation en temps réel par la conception et l'optimisation d'antennes ULB qui soient reconfigurables, multistandards et multifonctionnelles. Ainsi, tout système de localisation intégrant des antennes optimisées sera doté d'une qualité de localisation meil

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Alves, Luís Filipe Mesquita Nero Moreira. "High gain and bandwidth current-mode amplifiers : study and implementation." Doctoral thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/2216.

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Doutoramento em Engenharia Electrotécnica<br>Esta tese aborda o problema do projecto de amplificadores com grandes produtos de ganho por largura de banda. A aplicação final considerada consistiu no projecto de amplificadores adequados à recepção de sinais ópticos em sistemas de transmissão ópticos usando o espaço livre. Neste tipo de sistemas as maiores limitações de ganho e largura de banda surgem nos circuitos de entrada. O uso de detectores ópticos com grande área fotosensível é uma necessidade comum neste tipo de sistemas. Estes detectores apresentam grandes capacidades intrínsecas, o que

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Requin, Cédric. "Antennes quasi-auto-complémentaires pour terminaux mobiles multi-standards." Phd thesis, Université Nice Sophia Antipolis, 2013. http://tel.archives-ouvertes.fr/tel-00954410.

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Une antenne auto-complémentaire possède des caractéristiques radioélectriques très intéressantes en ce qui concerne l'élargissement de sa bande passante. Basée sur le principe de Babinet, l'auto-complémentarité permet en effet de maximiser la largeur de bande de par la complémentarité air-métal dans la structure de l'antenne. L'objectif de cette thèse est d'étudier quels pouvaient être les apports de l'auto-complémentarité dans le cas d'antennes à fortes contraintes d'intégration telles que celles utilisées pour les terminaux mobiles. Pour tester les limites de notre étude, nous avons choisi d

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Tiemounou, Sibiri. "Développement d'une méthode de diagnostic technique des dégradations de qualité vocale perçue des communications téléphoniques à partir d'une analyse du signal de parole." Thesis, Rennes 1, 2014. http://www.theses.fr/2014REN1S097/document.

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Les opérateurs de télécommunications se doivent de maîtriser et d'évaluer la qualité des services qu'ils offrent à leurs clients, dans un contexte en perpétuelle évolution. Comme alternative rapide et à moindre coût aux évaluations fondées sur l'interrogation d'utilisateurs, des outils de mesure ont été développés, qui intègrent des modèles permettant de prédire la qualité perçue. Cette thèse avait pour but de concevoir un outil de diagnostic de qualité vocale (applicable aux services de téléphonie), complémentaire à de tels modèles objectifs, afin d'obtenir des informations spécifiques sur la

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23

Landi, Laura. "Progetto PCB di un sistema a microcontrollore per sensing di corrente a banda larga." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18588/.

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Il progetto di tesi consiste nella realizzazione di un'applicazione per l'acquisizione di dati relativi ai consumi di potenza attraverso l'utilizzo di un sensore ad effetto Hall. Si è partiti dalla comprensione e descrizione del fenomeno dell'effetto Hall, per poi passare all'ideazione del circuito. Una volta focalizzato l'obiettivo della tesi e le specifiche di progetto, si è potuto procedere alla ricerca dei componenti necessari e alla realizzazione dello schematico e del layout del PCB. Il risultato finale è un circuito stampato di ridotte dimensioni, progettato per ridurre al massimo i con

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Rossoni, Mattos Diego. "Design and characterization of an 8gsps flash analog-to-digital converter for radio astronomy and cosmology applications." Thesis, Bordeaux 1, 2012. http://www.theses.fr/2012BOR14653/document.

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Un Convertisseur Analogique-Numérique (CAN) pour les applications spatiales en astrophysique et cosmologie a été développé au cours de cette thèse. Cette catégorie de circuits demande des bandes passantes très larges, de très hautes fréquences d'échantillonnage et une faible résolution. L’architecture flash a été retenue pour sa rapidité et sa bande passante. La fréquence d’échantillonnage est de 8GHz. La technologie utilisée est la CMOS 65 nm de chez STMicroeletronics. La conception a été faite en deux phases. Une première qui a amené à un prototype d'un échantillonneur-bloqueur et une deuxiè

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Alberti, Paolo. "Progetto e realizzazione di un sistema di test per sensori a effetto hall a banda larga." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9294/.

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Un ambito di largo interesse nel campo dell’elettronica, è quello delle misure di corrente a larga banda, in cui la richiesta per sistemi a basso costo è aumentata sensibilmente nel corso del tempo. La causa di questo interessamento è dovuto al più frequente utilizzo di sistemi switched power ad alta frequenza, che necessitano di sensori di correnti isolati e ad alte prestazioni. L’intero lavoro prende in considerazione un sensore di nuova generazione per le misure di corrente, capace di raggiungere prestazioni oltre lo stato dell’arte. L’elaborato presentato vede, quindi, come obiettivo la

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Cruz, Elifranio Alves. "Aprovisionamento avanÃado de recursos em redes convergentes sensÃveis ao contexto." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9235.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>Em razÃo da crescente demanda de usuÃrios mÃveis por conteÃdos criados com formato especÃfico e personalizado, ou adaptado para atender suas necessidades e preferÃncias no uso da web, as redes convergentes sensÃveis ao contexto incorporam uma promissora tecnologia para permitir aplicaÃÃes de serviÃos personalizados a mÃltiplos usuÃrios. O projeto C-CAST (Context Casting) (C-CAST, 2012) foi estabelecido para arquiteturas de redes convergentes sensÃveis ao contexto para suportar sessÃes com qualidade de serviÃo (QoS - Quality of Se

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Silva, Bruna Alice Lima da. "Antenas monopolo planar com patch em anel circular para sistemas UWB." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15320.

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Made available in DSpace on 2014-12-17T14:55:43Z (GMT). No. of bitstreams: 1 BrunaALS_DISSERT.pdf: 4847936 bytes, checksum: ecc365df0d6ba32afff7d15a2ae1d14a (MD5) Previous issue date: 2010-06-14<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>The microstrip antennas are largely used in wireless communication systems due to their low cost, weight, less complex construction and manufacturing, in addition to its versatility. UWB systems have emerged as an alternative to wireless communications over short distances because they offer of higher capacity and lower multipath disto

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Alves, George Dennes Fernandes. "Antenas planares multicamadas com materiais supercondutores e fot?nico para comunica??es m?veis." Universidade Federal do Rio Grande do Norte, 2006. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15280.

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Made available in DSpace on 2014-12-17T14:55:34Z (GMT). No. of bitstreams: 1 GeorgeDFA_Capa_ate_pag15.pdf: 8968407 bytes, checksum: 05f7b40d8df8312cf173aaad3ec43f83 (MD5) Previous issue date: 2006-08-04<br>Recently, planar antennas have been studied due to their characteristics as well as the advantages that they offers when compared with another types of antennas. In the mobile communications area, the need for this kind of antennas have became each time bigger due to the intense increase of the mobile communications this sector. That needs of antennas which operate in multifrequency and

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Chen, Tai-Liang, and 陳泰良. "Study of Photonic Crystal Waveguides with Large Delay-Bandwidth Product." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/24997034826635777590.

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碩士<br>龍華科技大學<br>電機工程研究所<br>99<br>This work is focused on the design and analysis of optical delay lines in two-dimensional photonic crystals. Six delay line structures are discussed in this work. The first one is by adjusting the radii of air holes adjacent to a line-defect waveguide. The second one is by adjusting the positions of air holes adjacent to a line-defect waveguide. The third one is by employing air rings adjacent to a line-defect waveguide. The fourth one is a photonic crystal waveguide with capsule-shaped air holes. The fifth one is a W2 waveguide. And the sixth one is a coupled-

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Liou, Jiun-Wei, and 劉俊緯. "Quasi-Phase-Matching Second Harmonic Generation Green Laser with Large Temperature Bandwidth On PPMgO:LiNbO3." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/42089668612886682779.

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碩士<br>國立臺灣大學<br>光電工程學研究所<br>98<br>This thesis reports the fabrication of periodically poled magne-sium-oxide-doped congruent lithium niobate (PPMgLN), to convert the 1064nm infrared laser into 532nm green light by using the technique of quasi-phase matching second harmonic generation(QPM-SHG). We improved the fabrication technique on electric poling method of congruent lithium niobate. This method leads to the realization of periodically poled QPM structures on 0.5mm and 1mm thick MgO:LiNbO3 substrates. The smallest periods achieved in this work are (i) 6.91um for the 1st - order 、(ii) chirpe

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Lai, Meng-Hsuan, and 賴孟暄. "Bandwidth selection in kernel estimation of relative risk: large control data vs. small case data." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/43q95b.

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碩士<br>淡江大學<br>統計學系碩士班<br>104<br>To estimate some disease relative risk, we ask whether residents suffer from particular disease on the certain region and record the residence of patient. We estimate the relative risk and observe the changes in the space. In our study, we use kernel estimation method to estimate relative risk and interest in choosing the bandwidth of kernel estimation. Another focus of our study, we set the bandwidths of case group and control group whether to be same when the number of patients is much less than the observations. We propose three cross-validation methods to se

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John, Jem Teresa. "Optical Diffraction Tomography for the Refractive Index Profiling of Objects with Large Space-Bandwidth product." Thesis, 2017. http://etd.iisc.ac.in/handle/2005/3617.

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The primary goal of this work is to arrive at direction tomography (DT) algorithms freed from the severe linearization in the formulation, and as-assumptions on variation of the refractive index distribution (RID), involved in the earlier approaches based on Born and Royton approximations and the Fourier di reaction theorem (FDT). To start with, a direct single-step re-covery of RID from intensity measurements is demonstrated, replacing the common two-step procedure involving, rest the recovery of phase from in-density followed by the inversion of scattered led for the RID. The information los

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John, Jem Teresa. "Optical Diffraction Tomography for the Refractive Index Profiling of Objects with Large Space-Bandwidth product." Thesis, 2017. http://etd.iisc.ernet.in/2005/3617.

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The primary goal of this work is to arrive at direction tomography (DT) algorithms freed from the severe linearization in the formulation, and as-assumptions on variation of the refractive index distribution (RID), involved in the earlier approaches based on Born and Royton approximations and the Fourier di reaction theorem (FDT). To start with, a direct single-step re-covery of RID from intensity measurements is demonstrated, replacing the common two-step procedure involving, rest the recovery of phase from in-density followed by the inversion of scattered led for the RID. The information los

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Chen, Wei-Chun, and 陳韋鈞. "The new demodulation technique without carrier signal of FOIS with large bandwidth and amplitude demodulation performance." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/43942982498144255539.

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碩士<br>國立高雄師範大學<br>光電與通訊工程學系<br>102<br>This is the first time to demodulate the original sensing signal without using carrier signal but the digital interference signal. The theory and logical skill of the interference demodulation without carrier signal will be proposed in this paper. comparing with the counting signal processing demodulation system, the advantages of the new demodulation technique are showing the wave form of original sensing signal (including the frequency and amplitude of the sensing signal), and also have great dynamic range. Comparing with the PGC demodulation technique,

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SHAHI, RAJENDRA SINGH. "REALIZATION OF WAVELENGTH CONVERSION AND DENSEWAVELENGT DIVISON MULTIPLEXING AT 40 Gb/S." Thesis, 2011. http://dspace.dtu.ac.in:8080/jspui/handle/repository/13882.

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M.TECH<br>Large bandwidth along with high transmission rate is require for today’s communication system. At present, optical fiber is the only medium for it with low loss communication links. With growing transmission rates, electronic regeneration become more and more expensive. So to overcome this problem of elctronic regenration, switching to optical domain is the best way to cater the high speed processing demand of the user. This can be accomplished by use of optical amplifier which are bit transparent and have an ability to amplify the signals at different wavelength simultaneously

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Alturkestani, Tariq. "Maximizing I/O Bandwidth for Out-of-Core HPC Applications on Homogeneous and Heterogeneous Large-Scale Systems." Diss., 2020. http://hdl.handle.net/10754/665396.

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Out-of-Core simulation systems often produce a massive amount of data that cannot t on the aggregate fast memory of the compute nodes, and they also require to read back these data for computation. As a result, I/O data movement can be a bottleneck in large-scale simulations. Advances in memory architecture have made it feasible and a ordable to integrate hierarchical storage media on large-scale systems, starting from the traditional Parallel File Systems (PFSs) to intermediate fast disk technologies (e.g., node-local and remote-shared NVMe and SSD-based Burst Bu ers) and up to CPU ma

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Hsieh, Meng-Hsuan, and 謝孟軒. "Design and Fabrication of Periodically Poled Magnesium-Doped Lithium Niobate Strip Waveguide Green Lasers with Large Temperature Bandwidth." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/20236176514235688171.

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碩士<br>國立臺灣大學<br>光電工程學研究所<br>99<br>Abstract Magnesium-doped lithium niobate substrates are used for the design and fabrication of waveguides on a 5 mm long segment-chirped grating structure. Green laser of wavelength 532 nm is obtained by the quasi-phase matching second harmonic generation (QPM-SHG), when launched with an incident laser of wavelength 1064nm. On the part of waveguide fabrication, two waveguides are fabricated by zinc-and-nickel co-diffusion and gallium diffusion in this thesis. The zinc-and-nickel co-diffusion waveguides have linewidth of 160 μm and film thickness of 100 nm, whi

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Wu, Zheng-yao, and 吳政耀. "10 Gbit/sec Planar InAlAs Avalanche Photodiodes with Large Active Area and Bandwidth Enhancement Effect under High-Sensitivity Operation Mode." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/95583585677569349624.

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碩士<br>國立中央大學<br>電機工程研究所<br>98<br>We demonstrate a novel type of planar InAlAs based separated absorption, transport, charge, and multiplication (SATCM), avalanche photodiode (APD) structure. By inserting an additional InP transport layer in the traditional InAlAs based SACM-APD structure, a strong 3-dB bandwidth enhancement (BE) phenomenon under 0.9 breakdown voltage (0.9Vbr) operation has been observed, which greatly releases the trade-off between RC-limited bandwidth and secondary-hole transport time. Through the use of such phenomenon, we can thus increase the active diameter of our SATCM

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Sincore, Alex. "Broad Bandwidth, All-fiber, Thulium-doped Photonic Crystal Fiber Amplifier for Potential Use in Scaling Ultrashort Pulse Peak Powers." Master's thesis, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6186.

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Fiber based ultrashort pulse laser sources are desirable for many applications; however generating high peak powers in fiber lasers is primarily limited by the onset of nonlinear effects such as self-phase modulation, stimulated Raman scattering, and self-focusing. Increasing the fiber core diameter mitigates the onset of these nonlinear effects, but also allows unwanted higher-order transverse spatial modes to propagate. Both large core diameters and single-mode propagation can be simultaneously attained using photonic crystal fibers. Thulium-doped fiber lasers are attractive for high peak po

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Cruz, Fernando Pedro Ferreira da. "Disjoint path pair calculation considering bandwidths." Master's thesis, 2014. http://hdl.handle.net/10316/40425.

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Dissertação de Mestrado Integrado em Engenharia Electrotécnica e de Computadores apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra<br>A dependência da sociedade moderna dos serviços de telecomunicações tem vindo a crescer nos últimos anos, assim como a responsabilidade de providenciar serviços com elevada qualidade. A garantia de fornecimento de um serviço de comunicações sem perda de conetividade é extremamente importante, pois qualquer interrupção nas comunicações é fortemente sentida pelos utilizadores. A proteção global de um caminho é uma forma simples de aume

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