Global ETD Search

211	In pursuit of consumer-accessible augmented virtuality / En strävan efter konsumenttillgänglig augmented virtuality Berggrén, Rasmus January 2017 (has links) This project is an examination of the possibility of using existing software to develop Virtual Reality (VR) software that includes key aspects of objects in a user’s surroundings into a virtual environment, producing Augmented Virtuality (AV). A defining limitation is the requirement that the software be consumer-accessible, meaning it needs run on a common smartphone with no additional equipment. Two related AV concepts were considered: shape reconstruction and positional tracking. Two categories of techniques were considered for taking the measurements of reality necessary to achieve those AV concepts using only a monocular RGB camera as sensor: monocular visual SLAM (mvSLAM) and Structure from Motion (SfM). Two lists of requirements were constructed, formalising the notions of AV and consumer-accessibility. A search process was then conducted, where existing software packages were evaluated for their suitability to be included in a piece of software fulfilling all requirements. The evaluations of SfM systems were made in combination with Multi-View Stereo (MVS) systems – a necessary complement for achieving visible shape reconstruction using a system that outputs point clouds. After thoroughly evaluating a variety of software, it was concluded that consumer-accessible AV can not currently be achieved by combining existing packages, due to several issues. While future hardware performance increases and new software implementations would solve complexity and availability issues, some inaccuracy and usability issues are inherent to the limitation of using a monocular camera. / Detta projekt är en undersökning av möjligheten att använda befintlig programvara till att utveckla Virtual Reality (VR)-programvara som infogar framstående aspekter av objekt från en användares omgivning in i en virtuell miljö och därmed skapar Augmented Virtuality (AV). En definierande begränsning är kravet på att programvaran skall vara konsumenttillgänglig, vilket innebär att den behöver kunna köras på en vanlig smartphone utan extra utrustning. Två besläktade AV-koncept beaktades: formrekonstruktion och positionsspårning. Två kategorier av tekniker togs i beaktande, vilka kunde användas för att göra de uppmätningar av verkligheten som var nödvändiga för att uppnå de tänkta AV-koncepten med hjälp av endast en monokulär RGB-kamera som sensor: monocular visual SLAM (mvSLAM) och Structure from Motion (SfM). Två listor med kriterier konstruerades, vilka formaliserade begreppen AV och konsumenttillgänglighet. En sökprocess utfördes sedan, där befintliga programvarupaket utvärderades för sin lämplighet att inkluderas i en programvara som uppfyllde alla kriterier. Utvärderingarna av SfM-system gjordes i kombination med Multi-View Stereo (MVS)-system – ett nödvändigt komplement för att uppnå synlig formrekonstruktion med ett system vars utdata är punktmoln. Efter att noggrant ha utvärderat en mängd programvara var slutsatsen att konsumenttillgänglig AV inte för närvarande kan uppnås genom att kombinera befintliga programvarupaket, på grund av ett antal olika problem. Medan framtida prestandaökningar hos maskinvara och nya programvarutillämpningar skulle lösa problem med komplexitet och tillgänglighet, är vissa problem med tillförlitlighet och användbarhet inneboende hos begränsningen till att använda en monokulär kamera. virtual reality VR mixed reality MR augmented virtuality AV SLAM SfM interaction design consumer-accessible consumer-accessibility smartphone 3D reconstruction shape reconstruction positional tracking computer vision point cloud Multi-View Stereo MVS Unity Google Cardboard feature detection Media and Communication Technology Medieteknik
212	Staroegyptské mytologické narativy. Strukturalistické interpretace Příběhu o dvou bratrech, Příběhu o princi, kterému byl předurčen osud, Astartina papyru, Usirovského cyklu a Anatina mýtu / Ancient Egyptian Mythological Narratives. Structural Interpretation of the Tale of Two Brothers, Tale of the Doomed Prince, the Astarte Papyrus, the Osirian Cycle and the Anat Myth Pehal, Martin January 2015 (has links) is study is composed of two units: manuscript of the author's publication Interpreting Ancient Egyptian Narratives: A Structural Analysis of the Tale of Two Brothers, the Anat Myth, the Osirian Cycle, and the Astarte Papyrus (Nouvelles études orientales, Bruxelles-Fernelmont: EME, 2014) and an additonal chapter entitled Accommodating Ambivalence: Case of the Doomed Prince and His Dog, which follows directly a er the Index of the first unit and which extends the applied methodology to yet another New Kingdom mythological narrative, the so-called Tale of the Doomed Prince. Methodologically, the author follows the neo-structuralist approach. Both studies explain the strong configurational character of ancient Egyptian (mythological) thought which has the ability to connect various ontological levels of human experience with the surrounding world into complex synchronic structures. ese symbolical systems are shown to be mediating between the various cultural paradoxes which were inherent to ancient Egyptian society. Axial role in this process is a ributed to the institution of positional kingship represented by the Pharaoh. Its transformative function is also put into relation to the special status of female characters who are shown to play the part of the "powerful powerless ones" further personifying...
213	Bullying: Out Of The School Halls And Into The Workplace Cooney, Lucretia 01 January 2010 (has links) The primary purpose of this study is to identify those people at most risk of being bullied at work. While much research is being conducted on school bullying, little has been conducted on workplace bullying. Using data gathered from a 2004 study conducted by the National Opinion Research Center for the General Social Survey, which included a Quality of Work Life (QWL) module for the National Institute for Occupational Safety and Health (NIOSH), linear regressions indicated significant findings. As predicted, workers in lower level occupations, as ranked by prestige scoring developed at National Opinion Research, are more likely to be victimized. Data also suggest that being young, Black, and relatively uneducated may contribute to being bullied in certain situations. Future research is needed to examine influences of socio-economic, legal, and other demographic factors that may predict the chance of being bullied. psychological abuse mobbing verbal abuse workplace bullying workplace harassment workplace mistreatment workplace aggression psychological violence employee employee emotional abuse emotional emotional abuse bullying job workplace bully occupational mobbing incivility interpersonal conflict harassment psychological violence employee abuse psychological service service positions women black non-white narcissists work boss bosses managers target age IPV interpersonal violence younger females marital status divorced single married occupation positional power relational power Marx Marxist social social conflict education health minority education region attendance church religious professional educational NIOSH prestige put down act upset upset shout personal space space sociology policy victim business academia co-worker humiliation intimidation slander social isolation isolation perpetrator stress discriminatory discrimination hospital court harassment Sociology
214	ON-MACHINE MEASUREMENT OF WORKPIECE FORM ERRORS IN ULTRAPRECISION MACHINING Gomersall, Fiona January 2016 (has links) Ultraprecision single point diamond turning is required to produce parts with sub-nanometer surface roughness and sub-micrometer surface profiles tolerances. These parts have applications in the optics industry, where tight form accuracy is required while achieving high surface finish quality. Generally, parts can be polished to achieve the desired finish, but then the form accuracy can easily be lost in the process rendering the part unusable. Currently, most mid to low spatial frequency surface finish errors are inspected offline. This is done by physically removing the workpiece from the machining fixture and mounting the part in a laser interferometer. This action introduces errors in itself through minute differences in the support conditions of the over constrained part on a machine as compared to the mounting conditions used for part measurement. Once removed, the fixture induced stresses and the part’s internal residual stresses relax and change the shape of the generally thin parts machined in these applications. Thereby, the offline inspection provides an erroneous description of the performance of the machine. This research explores the use of a single, high resolution, capacitance sensor to quickly and qualitatively measure the low to mid spatial frequencies on the workpiece surface, while it is mounted in a fixture on a standard ultraprecision single point diamond turning machine after a standard facing operation. Following initial testing, a strong qualitative correlation exists between the surface profiling on a standard offline system and this online measuring system. Despite environmental effects and the effects of the machine on the measurement system, the capacitive system with some modifications and awareness of its measurement method is a viable option for measuring mid to low spatial frequencies on a workpiece surface mounted on an ultraprecision machine with a resolution of 1nm with an error band of ±5nm with a 20kHz bandwidth. / Thesis / Master of Applied Science (MASc)

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