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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.
131

Rich multi-touch input with passive tokens / Objets passifs pour une entrée multi-points riche

Morales González, Rafael 09 October 2017 (has links)
L'entrée multi-points offre un canal d'interaction très expressif pour les dispositifs équipés d'une technologie tactile multi-points. Cependant, alors que la taille du canal de communication est, en théorie, très grande, la plupart des systèmes n'en font, en pratique, qu'un usage très limité. Cet état de fait est probablement dû à la difficulté de gérer un grand nombre de gestes multi-points pour deux raisons principales: (1) les limites cognitives et motrices des humains et (2) les difficultés techniques pour l'élaboration de systèmes de reconnaissance robustes. Cette thèse étudie une nouvelle technique d'entrée, TouchTokens, pour enrichir le vocabulaire de gestes multi-points, en se basant sur la position relative des points de contact et des objets (tokens) passifs. Un TouchToken est un "token" passif avec des encoches qui indiquent à l'utilisateur comment l'attraper, et qui est donc associé à une configuration de doigts qui lui est propre. Ainsi, lorsque les utilisateurs tiennent un token tout en étant en contact avec la surface, le système reconnaît le schéma de points de contact correspondant avec une grande robustesse. Nous commençons par présenter le principe avec des tokens rigides de forme basique. L'algorithme de reconnaissance et la conception des tokens sont issus des conclusions d'une étude formative dans laquelle nous avons collecté et analysé des schémas de points de contact lorsque les utilisateurs tiennent des tokens de taille et de forme variable. Cette première étude montre que les utilisateurs ont des stratégies individuelles cohérentes, mais que ces stratégies dépendent de l'utilisateur. Ces conclusions nous ont menés à l'élaboration de tokens avec des encoches afin que les utilisateurs attrapent un même token toujours de la même façon. L'expérience que nous avons menée sur ce nouvel ensemble de tokens démontre que nous pouvons les reconnaître avec un niveau de robustesse supérieur à 95%. Nous discutons les rôles que peuvent jouer les TouchTokens dans les systèmes interactifs, et nous présentons un échantillon d'applications de démonstration. La conception initiale des TouchTokens ne supporte qu'un ensemble d'interactions se limitant au modèle à deux états de l'interaction directe. Dans un second projet, nous décrivons une technique de fabrication avec une découpeuse laser qui permet de faire des tokens flexibles que les utilisateurs peuvent, par exemple, courber ou compresser en plus de les faire glisser sur la surface. Nous augmentons notre reconnaisseur pour analyser les micro-mouvements des doigts pendant la manipulation du token afin de reconnaître ces manipulations. Cette approche basée sur l'analyse des micro-mouvements des doigts nous permet également de discriminer, lorsque l'utilisateur enlève ses doigts de la surface, le cas où il enlève le token de la surface, du cas où le token est resté sur la surface. Nous rapportons sur les expériences que nous avons menées pour déterminer la valeur des paramètres de nos différents reconnaisseurs, et tester leur robustesse. Nous obtenons des taux de reconnaissance supérieurs à 90% sur les données collectées. Nous finissons cette thèse par la présentation de deux outils qui permettent de construire et reconnaître des tokens de forme arbitraire, TouchTokenBuilder and TouchTokenTracker. TouchTokenBuilder est une application logicielle qui permet de placer des encoches sur des contours vectoriels de forme arbitraire, et qui alerte en cas de conflit de reconnaissance entre tokens. TouchTokenBuilder produit deux fichiers en sortie: une description vectorielle des tokens pour leur construction, et une description numérique servant à leur reconnaissance. TouchTokenTracker est une librairie logicielle qui prend cette description numérique en entrée, et qui permet aux développeurs de traquer la géométrie (position, orientation et forme) des tokens au cours de leur manipulation sur la surface. / This thesis investigates a novel input technique for enriching the gesture vocabulary on a multi-touch surface based on fingers' relative location and passive tokens. The first project, TouchTokens, presents a novel technique for interacting with multi-touch surfaces and tokens. The originality is that these tokens are totally passive (no need for any additional electronic components) and their design features notches that guide users' grasp. The purpose of the notches is to indicate a finger spatial configuration (touch pattern) that is specific to the token. When users hold a token and place it on the surface, touching them simultaneously, the system can recognize the resulting touch patterns with a very high level of accuracy (>95%). This approach works on any touch-sensitive surface and makes it possible to easily build low-cost interfaces that combine no-conductive tangibles and gestural input. This technique supports a new multi-touch input that the system can recognize. However, the interaction is limited to the two-state model of touch interaction as the system only knows the tokens' position and cannot detect tokens that are not touched. In the second project of the thesis, we introduce a laser-cut lattice hinge technique for making the tokens flexible. We then develop a new recognizer that analyzes the micro-movements of the fingers while user are holding and deforming those tokens on the surface. We run three experiments to design and calibrate algorithms for discriminating the three following types of manipulations: (1) when a token is left on the surface rather than taken off it (On/Off); (2) when a token has been bent, and (3) when it is squeezed. Our results show that our algorithms can recognize these three manipulations with an accuracy of: On/Off 90.1%, Bent 91.1% and Squeezed 96,9%.The thesis concludes with the presentation of two tools, TouchTokenBuilder and TouchTokenTracker, for facilitating the development of tailor-made tangibles using a simple direct-manipulation interface. TouchTokenBuilder is a software application that assists interface designers in placing notches on arbitrarily-shaped vector contours for creating conflict-free token sets and warning them about potential conflicts. It outputs two files: a vector-graphics description of all tokens in the set and a numerical description of the geometry of each token. TouchTokenTracker is a software library that takes as input the numerical description produced by TouchTokenBuilder, and enables developers to track the tokens' full geometry (location, orientation and shape) throughout their manipulation on the multi-touch surface.
132

Řídící systém čístící stanice CIP pro čištení mlékárenského technologického zařízení / Control system for cleaning station CIP used for cleaning of milk processing equipment

Šindelář, Petr January 2009 (has links)
The thesis describes hardware and software of Control system for cleaning station CIP used for cleaning of milk processing equipment. The description of hardware contains definitions and number of PLC modules for PLC Simatic S7-300. The software part contains programs for PLC, SCADA software for WinCC flexible 2005 and the description of the computer's model.
133

Statistical Modeling Method for Efficiency Improvement of Industrial Processes / 生産プロセス効率化のための統計的モデリング手法

Kim, Sanghong 24 March 2014 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(工学) / 甲第18311号 / 工博第3903号 / 新制||工||1599(附属図書館) / 31169 / 京都大学大学院工学研究科化学工学専攻 / (主査)教授 長谷部 伸治, 教授 大嶋 正裕, 教授 宮原 稔 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM
134

The Effects of Input Flood, Structured Input, Explicit Information, and Language Background on Beginner Learners’ Acquisition of a Target Structure in Mandarin Chinese

Glimois, Laurene 27 August 2019 (has links)
No description available.
135

Fuzz Testing for Quality Control in Systems with Complex Input Data

Bodin, Josefin January 2023 (has links)
Fuzz testing is a testing technique used to generate a large amount of random or semi-random input data. This data is then fed to a target system which is then run with said data and monitored for anomalous behaviour. But as systems become increasingly complex, and as such, their input, fuzz testing becomes less efficient as pure randomisation no longer yields many useful results, and the long execution chains that may arise from complex systems create a demand for configurability in order to generate useful test data and make the testing efficient long-term. This thesis applies high-level configurability to a fuzz testing tool and tests this on a proprietary hard real-time operating system. The results show that this approach might not work all that well on the target system used during this thesis, but it is still believed that it is an approach to fuzz testing which may be useful in other regards.
136

Integration of an active optical system for Flexlab

Strahler, Jeremy A. January 2000 (has links)
No description available.
137

Design techniques for first pass silicon in SOC radio transceivers

Wilson, James Edward 26 June 2007 (has links)
No description available.
138

L'Analyse input-output et ses applications à l'économie libanaise : 1964-1969.

Thomas, Antranik. Unknown Date (has links)
Th.--Écon.--Rennes 1, 1977.
139

Dynamics and control of dual-hoist cranes moving distributed payloads

Miller, Alexander S. 07 January 2016 (has links)
Crane motion induces payload oscillation that makes accurate positioning of the payload a challenging task. As the payload size increases, it may be necessary to utilize multiple cranes for better control of the payload position and orientation. However, simultaneously maneuvering multiple cranes to transport a single payload increases the complexity and danger of the operation. This thesis investigates the dynamics and control of dual-hoist bridge cranes transporting distributed payloads. Insights from this dynamic analysis were used to design input shapers that reduce payload oscillation originating from various crane motions. Also, studies were conducted to investigate the effect input shaping has on the performance of human operators using a dual-hoist bridge crane to transport distributed payloads through an obstacle course. In each study, input shaping significantly improved the task completion time. Furthermore, input-shaping control greatly decreased operator effort, as measured by the number of interface button pushes needed to complete a task. These results clearly demonstrate the benefit of input-shaping control on dual-hoist bridge cranes. In addition, a new system identification method that utilizes input shaping for determining the modal frequencies and relative amplitude contributions of individual modes was developed to aid in the dynamic analysis of dual-hoist bridge cranes, as well as other multi-mode systems. This method uses a new type of input shaper to suppress all but one mode to a low level. The shaper can also be used to bring a small-amplitude mode to light by modifying one of the vibration constraints.
140

Multiple-Input Multiple-Output Systems for Spinning Vehicles

Petersen, Samuel 10 1900 (has links)
ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, California / This paper investigates the performance of a multiple-input multiple-output (MIMO) digital communication system, when the transmitter is located on a spinning vehicle. In particular, a 2x2 MIMO system is used, with Alamouti coding at the transmitter. Both Rayleigh and Rayleigh plus line-of-sight, or Rician, models combined with a deterministic model to simulate the channel. The spinning of the transmitting vehicle, relative to the stationary receive antennas, modulates the signal, and complicates the decoding and channel parameter estimation processes. The simulated system bit error rate is the primary performance metric used. The Alamouti channel code is shown to perform better than the maximal ratio receiver combining (MRRC) and single receiver (2x1) system in some circumstances and performs similarly to the MRRC in the broadside case.

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