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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.
271

Understanding remote collaboration in video collaborative virtual environments : a thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy in the University of Canterbury /

Hauber, Jörg. January 2008 (has links)
Thesis (Ph. D.)--University of Canterbury, 2008. / Typescript (photocopy). Includes bibliographical references (leaves 216-239). Also available via the World Wide Web.
272

Polymer/ceramic wireless MEMS pressure sensors for harsh environments:

Fonseca, Michael Agapito. January 2007 (has links)
Thesis (Ph.D)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008. / Committee Chair: Dr. Mark G. Allen; Committee Co-Chair: Dr. Oliver Brand; Committee Member: Dr. Andrew Peterson; Committee Member: Dr. Elliot Chaikof; Committee Member: Dr. Gregory Durgin; Committee Member: Dr. Robert Butera.
273

Ultrasonic measurement of thin condensing fluid films

Shear, Michael A. January 2002 (has links)
Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: microgravity; condensation; ultrasound. Includes bibliographical references (p. 138).
274

Understanding user engagement in immersive and interactive stories

Dow, Steven P.. January 2008 (has links)
Thesis (Ph.D)--Computing, Georgia Institute of Technology, 2009. / Committee Chair: MacIntyre, Blair; Committee Member: Bolter, Jay; Committee Member: Guzdial, Mark; Committee Member: Mateas, Michael; Committee Member: Mynatt, Elizabeth. Part of the SMARTech Electronic Thesis and Dissertation Collection.
275

Design of a new narrow channel apparatus that simulates low gravity conditions for producing near limit flames

Gala, Kaci Jo. January 2007 (has links)
Thesis (M.S.)--Michigan State University. Dept. of Mechanical Engineering, 2007. / Title from PDF t.p. (viewed on Aug. 11, 2009) Includes bibliographical references (p. 85). Also issued in print.
276

Unscripted actions designing for product interaction through a preschool play system /

Stewart, Tiffany Ann. January 1900 (has links)
Thesis (M.S.)--The University of North Carolina at Greensboro, 2008. / Directed by Novem Mason; submitted to the Dept. of Interior Architecture. Title from PDF t.p. (viewed Sep. 3, 2009). Includes bibliographical references (p. 88-91).
277

Spreading of initially spherical viscous droplets

Kotikalapudi, Sivaramakrishna. January 2000 (has links) (PDF)
Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: crown; splash; spreading; oscillatory; droplets; microgravity; viscosity; map; stability; solid surface; surface tension; gravity. Includes bibliographical references (p. 111-113).
278

Virtually there social structure over time and space /

Rysavy, Wayne Erik. January 2009 (has links)
Thesis (M.A.)--Boise State University, 2009. / Title from t.p. of PDF file (viewed June 22, 2009). Includes bibliographical references (leaves 97-102).
279

Robust sampling-based conflict resolution for commercial aircraft in airport environments

Van den Aardweg, William 03 1900 (has links)
Thesis (MEng)--Stellenbosch University, 2015. / ENGLISH ABSTRACT: This thesis presents a robust, sampling-based path planning algorithm for commercial airliners that simultaneously performs collision avoidance both with intruder aircraft and terrain. The existing resolution systems implemented on commercial airliners are fast and reliable; however, they do possess certain limitations. This thesis aims to propose an algorithm that is capable of rectifying some of these limitations. The development and research required to derive this conflict resolution system is supplied in the document, including a detailed literature study explaining the selection of the final algorithm. The proposed algorithm applies an incremental sampling-based technique to determine a safe path quickly and reliably. The algorithm makes use of a local planning method to ensure that the paths proposed by the system are indeed flyable. Additional search optimisation techniques are implemented to reduce the computational complexity of the algorithm. As the number of samples increases, the algorithm strives towards an optimal solution; thereby deriving a safe, near-optimal path that avoids the predicted conflict region. The development and justification of the different methods used to adapt the basic algorithm for the application as a confiict resolution system are described in depth. The final system is simulated using a simplified aircraft model. The simulation results show that the proposed algorithm is able to successfully resolve various conflict scenarios, including the generic two aircraft scenario, terrain only scenario, a two aircraft with terrain scenario and a multiple aircraft and terrain scenario. The developed algorithm is tested in cluttered dynamic environments to ensure that it is capable of dealing with airport scenarios. A statistical analysis of the simulation results shows that the algorithm finds an initial resolution path quickly and reliably, while utilising all additional computation time to strive towards a near-optimal solution. / AFRIKAANSE OPSOMMING: Hierdie tesis bied 'n robuuste, monster-gebaseerde roetebeplanningsalgoritme vir kommersiële vliegtuie aan, wat botsingvermyding met indringervliegtuie en met die terrein gelyktydig uitvoer. Die bestaande konflikvermyding- stelsels wat op kommersiële vliegtuie geïmplementeer word, is vinnig en betroubaar; dit het egter ook sekere tekortkominge. Hierdie tesis is daarop gemik om 'n algoritme voor te stel wat in staat is om sommige van hierdie tekortkominge reg te stel. Die ontwikkeling en navorsing wat nodig was om hierdie konflik-vermyding-algoritme af te lei, word in die dokument voorgelê, insluitende 'n gedetailleerde literatuurstudie wat die keuse van die finale algoritme verduidelik. Die voorgestelde algoritme pas 'n inkrementele, monster-gebaseerde tegniek toe om vinnig en betroubaar 'n veilige roete te bepaal. Die algoritme maak gebruik van 'n lokale beplanningsmetode om te verseker dat die roetes wat die stelsel voorstel inderdaad uitvoerbaar is. Aanvullende soektog-optimeringstegnieke word geïmplementeer om die berekeningskompleksiteit van die algoritme te verlaag. Soos die aantal monsters toeneem, streef die algoritme na 'n optimale oplossing; sodoende herlei dit na 'n veilige, byna-optimale roete wat die voorspelde konflikgebied vermy. Die ontwikkeling en regverdiging van die verskillende metodes wat gebruik is om die basiese algoritme aan te pas vir die toepassing daarvan as 'n konflik-vermyding-stelsels word in diepte beskryf. Die finale stelsel word gesimuleer deur 'n vereenvoudigde vliegtuigmodel te gebruik. Die simulasie resultate dui daarop dat die voorgestelde algoritme verskeie konflikscenario's suksesvol kan oplos, insluitend die generiese tweevliegtuigscenario, die slegs-terreinscenario, die tweevliegtuig-met-terreinscenario en die veelvuldige vliegtuig-enterreinscenario. Die ontwikkelde algoritme is in 'n beisge (cluttered), dinamiese omgewing getoets om te verseker dat dit 'n besige lughawescenario kan hanteer. 'n Statistiese ontleding van die simulasie resultate bewys dat die algoritme vinnig en betroubaar 'n aanvanklike oplossingspad kan vind, addisioneel word die oorblywende berekeningstyd ook gebruik om na 'n byna optimaleoplossing te streef.
280

Autisme et architecture : l'exploration des troubles du spectre autistique en relation avec les paramètres architecturaux de leurs lieux de vie / Autism and architecture

Longuepee, Lucie 27 February 2015 (has links)
La recherche engagée dans ce travail de thèse se propose d’étudier les effets que peuventavoir différentes composantes du cadre architectural sur l'adaptation des personnes adultesavec autisme, et l'expression clinique des symptômes inhérents aux Troubles du SpectreAutistique (TSA). Pour ce faire, la recherche menée a consisté en un inventaire concernantcette problématique, tant d’un point de vue théorique (description des concepts abordés etrevue de littérature des études existantes) que pratique (méthodologie exploratoire appliquéeau terrain). Nos objectifs étant d’établir des hypothèses spécifiques concernant l’impact descaractéristiques architecturales de l’environnement bâti sur l’état clinique des personnesatteintes de TSA, un volet clinique et un volet architectural ont été menés conjointement afinde représenter l’inter-disciplinarité nécessaire pour répondre aux objectifs communs etcomplémentaires de cette recherche. Ce manuscrit présente la méthodologie utilisée lors del’évaluation clinique des personnes adultes atteintes de TSA qui résident et sont prises encharge au sein d’institutions sanitaires et médico-sociales (Foyers d’Accueil Médicalisés etMaison d’Accueil Spécialisée) et le protocole de caractérisations architecturales desespaces/temps de vie quotidienne de ces établissements. Nous présentons, dans un premiertemps, le descriptif de la population étudiée et les caractéristiques des lieux de vie qui leursont dédiés. Puis, nous présentons, dans un second temps, les résultats obtenus par laconceptualisation de modèles d’analyses multi-niveaux / multi-variées des données interdisciplinairesainsi recueillies (N=21 établissements/unités, N=148 résidents). Nous endiscutons les interprétations possibles formulables sous forme d’hypothèses exploratoiresentre les paramètres de caractérisations architecturales et les évaluations comportementales etsensorielles des adultes atteints de TSA. Nous présentons également les perspectives decontinuité de ce projet de recherche, tant pour les questionnements exploratoires émergents,que pour les possibilités expérimentales qu’il incite afin d’affiner notre compréhension desfacteurs environnementaux susceptibles de générer et/ou d’atténuer les troublescomportementaux et sensoriels observés chez les personnes atteintes de TSA. / The research undertaken in this thesis project was to study the possible effects of differentcomponents of the architectural framework on the adaptation of adults with autism, and theclinical expression of their symptoms associated with Autism Spectrum Disorders (ASD). Theresearch consisted of an inventory of the main points known on the issue at this time, bothfrom a theoretical point of view (description of the concepts and literature review of existingstudies) and practical (exploratory methodology applied to the field). As our goals were toestablish specific assumptions about the impact of architectural features of the environmenton the clinical condition of people with ASD, a clinical component and an architecturalcomponent were carried out jointly to represent the inter-disciplinarity necessary to meet thecommon and complementary objectives of this research. This manuscript presents themethodology used in the clinical evaluation of adults with ASD who live in healthcare andmedico-social institutions (in France, “Foyers d’Accueil Médicalisé” and “Maison d’AccueilSpécialisée”) and the architectural characterizations protocol of the spaces/time everyday lifein these institutions. We report, in the first instance, the description of the studied populationand the characteristics of the living spaces that are dedicated to it. In a second step, we presentthe results obtained by the conceptualization of multilevel analysis models/multivariate interdisciplinaryof the collected data (N = 21 care institutions, N = 148 residents). We discuss thepossible interpretations formulated in the forms of exploratory hypotheses betweenarchitectural characterization parameters and behavioral and sensory evaluations of adultswith ASD. Finally, we discuss avenues for further research in order to refine ourunderstanding of the environmental factors that can generate and/or attenuate behavioral andsensory processing disorders observed in individuals with ASD.

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