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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Specification of difficult to test radar performance

Yu, Chen-Kuo. January 1990 (has links) (PDF)
Thesis (M.S. in Systems Engineering (Electronic Warfare))--Naval Postgraduate School, September 1990. / Thesis Advisor(s): Lee, Hung-Mou. Second Reader: Sternberg, Joseph. "September 1990." Description based on title screen as viewed on December 15, 2009. DTIC Identifier(s): Radar Equipment, Antiaircraft Defense Systems, Computerized Simulation, Performance (Engineering). Author(s) subject terms: Operational Requirement, Specification of Radar Performance. Includes bibliographical references (p. 73). Also available in print.

Arousal and self awareness models of social facilitation effects associated with audience presence during performance of a motor task /

Gordon, M.I. Unknown Date (has links) (PDF)
Thesis (B.A.(Hons.)) -- University of Adelaide, 1981.

Performance analysis of automated attack graph generation software

Cullum, James J. January 2006 (has links) (PDF)
Thesis (M.S. in Computer Science)--Naval Postgraduate School, December 2006. / Thesis Advisor(s): Cynthia Irvine, Timothy Levin. "December 2006." Includes bibliographical references (p. 137- 138). Also available in print.

Performance measurement system modeling using regression and neural networks /

Joshi, Atul. January 2005 (has links)
Thesis (M.S.)--State University of New York at Binghamton, Industrial and Systems Engineering Dept., 2005. / Includes bibliographical references.

Strategic Positioning and firm performance /

Tripathy, Arindam, January 2006 (has links)
Thesis (Ph. D.)--University of Texas at Dallas, 2006. / Includes vita. Includes bibliographical references (leaves 84-93).

Queens and batuqueiras: Race, gender, and knowledge in the transnational migrations of Afro-Brazilian maracatu nação

January 2021 (has links)
archives@tulane.edu / This study examines maracatu nação, a working-class, Afro-Brazilian carnival pageant from the city of Recife in Pernambuco state, and its relationship to the transnational circuits of knowledge production created by elite artists and intellectuals interested in the practice. Maracatu nação features the procession of an African royal court dressed in elaborate and ostentatious European Baroque garb, with thunderous drumming, call-and- response songs of competitive bravado, and dance. Linked to the coronation festivities of Black Catholic Brotherhoods and the rites of Afro-Brazilian spirit-possession religion, and associated with black, working-class neighbourhoods in Recife, in recent decades maracatu nação has commanded increased attention from academics and artists, gaining popularity among the local lighter-skinned middle-classes, within other regions of Brazil, and in the Brazilian diaspora. However, though this attention has exploded since the 1990s, this dissertation demonstrates that the relational patterns that characterize this interest extend well into the early twentieth century. Combining archival, ethnographic, and close reading methodologies, this study uncovers the how the field activities, creative and intellectual output, interventions, and field relationships of local and foreign artist-folklorists established enduring representations of maracatu nação as well as the intellectual paradigms through which the practice is understood today. Engaging with transnational and relational theories of identity and culture, this study also examines how performers of maracatu nação navigate the landscape shaped by former generations of researchers, and how they situate their practice and themselves within historical narratives of local blackness. Performers of maracatu nação continue to grapple with two legacies left by former visitors: one, the practice of stylization of maracatu nação by elite artists, which contributed to the term maracatu estilizado (“stylized maracatu”) becoming a pejorative term used to place limits on innovation; and two, the threat of “going to the museum”—the cessation of a group’s activities and donation of their instruments and costumes to a local archive—perceived as a kind of death. These two intertwined discourses produce a tension between notions of tradition and innovation that are central to how performers of maracatu nação conceive of the conditions necessary for the practice’s survival. / 1 / Amy Katherine Medvick

The French flute tradition

Stoltz, Liesl January 2003 (has links)
Bibliography: leaves 131-138. / The French flute tradition is remarkable and is admired by flautists, teachers and students of the flute all over the world. The dissertation researched the development of this tradition from the pre-Baroque period through to the modern era and tried to determine the underlying factors that stimulated its development specifically in France. The first key was added to the flute in France and with this the Hotteteres created the blueprint for the modern flute of today. During the Classical period the conservative French retarded the development of the instrument and the repertoire for the flute by initially rejecting additional keys.

A structured teaching approach to extended flute techniques at pre-tertiary level

Pietersen, Inge Kim January 2010 (has links)
Includes abstract. / Includes bibliographical references (p. 204-206). / This research explores extended flute techniques and arrives at a suggested structured teaching approach to these techniques at pre-tertiary level. The views of extended flute technique specialists have been collected to help set up lesson plans and resource lists for the contemporary teacher.

Fouille d'informations multimédia partagées orienté événements / Event-based social media data mining

Liu, Xueliang 03 December 2012 (has links)
La notion d’"évènement" est une des clés majeures permettant de se remémorer des souvenirs. Avec le développement du Web 2.0, beaucoup de sites de partage d’information au sujet d’évènements font leur apparition sur internet, et une grande variété d’évènements sont programmés et décrits par plusieurs services et réseaux sociaux en ligne. L’étude des relations entre medias sociaux et évènements pourrait tirer parti des connaissances liées au domaine des évènements et des ontologies afin de formuler les problèmes soulevés ; l’exploitation des caractéristiques multimodales peut aussi permettre d’explorer les caractéristiques en profondeur. Dans cette thèse, nous étudions le problème de l’extraction de connaissances quant aux relations entre évènements et données des réseaux sociaux. Trois problèmes sont au centre de notre analyse. Le premier problème porte sur l’enrichissement visuel des évènements : notre recherche vise à comprendre comment utiliser les médias sociaux pour illustrer des évènements. Le deuxième problème, la découverte d’évènement. Nous proposons d’utiliser la détection de niveaux et des méthodes de détection de sujet pour découvrir des évènements grâce aux annotations spatiales et temporelles présentes dans les médias sociaux. Le troisième problème concerne la modélisation visuelle des évènements, dont la problématique est de rassembler de façon automatique des échantillons d’apprentissage, afin de mettre en œuvre une représentation visuelle des évènements. La solution proposée consiste à rassembler des exemples à la fois positifs et négatifs ; de même, elle est dérivée de l’analyse du contexte des médias sociaux. / The exponential growth of social media data requires scalable, effective and robust technologies to manage and index them. Event is one of the most important cues to recall people’s past memory. With the development of Web 2.0, many event-based information sharing sites are appearing online, and a wide variety of events are scheduled and described by several social online services. The study of the relation between social media and events could leverage the event domain knowledge and ontologies to formulate the raised problems, and it could also exploit multimodal features to mine the patterns deeply, hence gain better performance compared with some other methods. In this thesis, we study the problem of mining relations between events and social media data. There are mainly three problems that are well investigated. The first problem is event enrichment, in which we investigate how to leverage the social media to events illustration. The second problem is event discovery, which focuses on discovering event patterns from social media stream. We propose burst detection and topic model based methods to find events from the spatial and temporal labeled social media. The third problem is visual event modeling, which studies the problem of automatically collecting training samples to model the visualization of events. The solution of collecting both of the positive and negative samples is also derived from the analysis of social media context. Thanks to the approaches proposed in this thesis, the intrinsic relationship between social media and events are deeply investigated, which provides a way to explore and organize online medias effectively.

TCP performance study and enhancements within wireless multi-hop ad hoc network environments / Analyse et amélioration conjointe de la consommation d'énergie et des débits de TCP dans les réseaux ad hoc sans fil

Seddik, Alaa 30 March 2009 (has links)
Les réseaux ad hoc diffèrent des réseaux filaires par la multitude de perturbation auxquels ils sont sujets. Alors qu’une rupture de lien est un événement plutôt rare sur des réseaux filaires, et généralement imputable à l’état physique du matériel intermédiaire, cet événement est courant avec les communications radio. Ceci est lié à la qualité du signal reçu de l’autre extrémité ou à la configuration de l’environnement. Les perturbations causées par l’environnement ne mènent pas seulement à une rupture d’un lien, elles peuvent avoir un impact sur la réception des données. La volatilité des liens est typique dans les réseaux sans fil alors pour les réseaux filaires ce problème est inexistant. TCP, qui est prévu pour assurer la transmission fiable des données, n’a été conçu qu’en tenant compte des contraintes des réseaux filaires. Ainsi, certains événements dans la transmission de données sans fil peuvent être mal interprétés et engendrer une mauvaise réaction de TCP. Pour améliorer la performance de TCP dans les réseaux ad hoc, l’objectif de cette thèse est double. Dans un premier temps, une étude complète des performances de TCP dans les réseaux ad hoc est dressée. Celle-ci concerne à la fois les débits atteignables et aussi la consommation d’énergie induite par l’utilisation de ce protocole de transport dans un réseau ad hoc. Cette étude permet d’identifier les points d’amélioration de TCP pour qu’il soit utilisable dans les réseaux ad hoc. Dans un second temps, nous proposons une nouvelle variante de TCP, appelée TCP-WELCOME, dont l’objectif est de traiter de façon adéquate les différents types de perte de paquets sur un réseau ad hoc et optimiser la performance de TCP. / Wireless ad hoc networks are different from wired networks by the multitude of data packet loss situations they are subjected to. This is due to the characteristics of wireless channel that might obstruct the proper reception of data packet at the destination end. In some case, these vulnerabilities of wireless channel can result in a complete link failure. Although link failure is of low probability in wired networks, it is rather common in wireless networks. The volatility of communication channel is a typical problem with wireless links, which is not the case with wired cables. TCP is a transport protocol that aims at ensuring high reliability and guarantying reception of data packets. However, TCP was designed for wired networks to address congestion, which is the main cause for data packet loss in wired networks. Therefore, other types of data packet loss encountered in wireless networks are prone to misinterpretation by TCP, which will lead to TCP performance degradation within the network. To overcome the performance limitation of TCP when used within ad hoc networks, the aim of this thesis is twofold. First, a complete performance study of TCP over ad hoc networks is achieved. This evaluation concerns two performance metrics: the achievable throughput and the energy consumption of TCP within ad hoc networks. This study allows identifying the potential room of improvement to enhance TCP efficiency in ad hoc networks. Second, we propose a new TCP variant, TCP-WELCOME that optimizes the performance of TCP in ad hoc networks through its ability to distinguish among, and efficiently deal with, different data packet loss situations, within ad hoc networks.

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