Global ETD Search

81	Mathematical Practices and the Role of Interactive Dynamic Technology Burrill, Gail 06 March 2012 (has links) No description available. info:eu-repo/classification/ddc/510 ddc:510
82	Third-Party Perception: Implications for Governance and Communication of Health Risks during the Umrah in Saudi Arabia Alkhurayyif, Saad A. 05 1900 (has links) The current study projects the third-person perception phenomenon into the area of emergency management, specifically regarding risk communication in the context of religious gatherings. This study utilized the Umrah religious gathering in Makkah, Saudi Arabia, during summer 2019 as a case study (N = 257). This study aimed to investigate whether pilgrims perceive there was a greater effect of health information on others than on themselves. Survey results were translated and then coded and analyzed statistically using SPSS software. The findings indicated that third-person perception existed among pilgrims. Specifically, the perception of pilgrims that the influence of news about MERS-CoV, believed to be undesirable in its effect on themselves, was greater on others than on themselves was found statistically significant. Further, the findings indicated that the more pilgrims watched, listened to, or read news about MERS-CoV, the larger the effect of the news they perceived on themselves and others was. Thus, exposure to MERS-CoV news did not increase, but rather decreased the perception of difference between self and others. Also, the empirical findings indicated that pilgrims who were knowledgeable about MERS-CoV could relate to the coverage. Moreover, if pilgrims believed they were affected by MERS-CoV news, they believed that the MERS-CoV news had a similar or greater effect on other pilgrims. The findings indicated socio-demographics had a partial effect on third-person perception, Finally, the stronger the perceived effect of MERS-CoV news on oneself, the more likely these pilgrims were to take protective actions against the MERS-CoV epidemic. However, the third-person perception anticipated in the use of impersonal communication (pamphlets, television, radio, newspapers, Internet, social media, text message, health clinics, mosques messages, public events, and billboards) and of interpersonal communication (friends, family member, or others you know) was not found significant. Moreover, the perceived effects of MERS-CoV news on others did not show third-person perception regarding behavior intention or consequences. These findings have implications for risk communication and its governance during religious gatherings as well as for the prepared individuals to promote preparation for risk and actions toward risk mitigation. Third-person perception risk communication emergency management, MERS-CoV news health information disease epidemics Umrah pilgrims religious gathering behavior consequence. Political Science, Public Administration Political Science, Public Administration Political Science, Public Administration
83	Implementing Kalman Filtering Algorithms for Estimating Clamp Force on a Test Rig : Testing the Power and Limitations of Unscented Kalman Filter-based Estimations / Tillämpning av Kalman-Filtreringsalgoritmer för att Estimera Klämkraft på en Testrig Naser, Tim January 2023 (has links) his study explores clamp force estimation using Unscented Kalman Filtering (UKF) in torque-controlled tightening scenarios with various velocity profiles. Previous research has explored the impact of velocity levels on target torque and clamping force, but only using hand-held tools. Prior research is extended by implementing UKF in a fixed setup, using the QST42, to remove user errors. Four strategies, Continuous Drive, TurboTight, Accelerating Tightening, and Paused Tightening, are analyzed using error and quality factor metrics. In Continuous Drive, both hand-held and fixed rigshave mean errors of approximately 4.09% and 4.14%, with quality factors of 88.38% and 97.72%.UKF adapts well in TurboTight, with mean errors of 3.50% (hand-held) and 5.23% (fixed rigs), and quality factors of 93.02% and 94.44%, respectively. Dynamic strategies like Accelerating Tightening- yield higher mean errors (10.33%) and quality factors (94.86%), while Paused Tightening results in a mean error of 5.17% and a quality factor of 76.86%. Tailoring UKF calibration is crucial for accuracy. Overall, this research underscores the close correlation between UKF’s performance and the dynamics of the tightening strategy. The implications extend to industrial applications, advocating for strategy-specific adjustments to enhance clamp force estimation accuracy. This study contributes to advancing UKF’s applicability in real-world scenarios, providing a foundational framework to enhance the accuracy and reliability of clamp force estimations. / Denna studie utforskar kraftuppskattning för klammer i momentkontrollerade åtdragnings-scenarier med olika hastighetsprofiler med hjälp av Unscented Kalman Filtering (UKF). Tidigare forskning har utforskat påverkan av hastighetsnivåer på målmoment och klämkraft, men endast med användning av handhållna verktyg. Tidigare forskning utökas genom att implementera UKF i en fast inställning, med QST42 verktyget, för att eliminera användarfel. Fyra strategier, Continuous Drive, TurboTight, Accelerating Tightening och Paused Tight-ening, analyseras med hjälp av fel- och kvalitetsfaktormetoder. I Continuous Drive har både handhållna och fixta åtdragningar medelvärdesfel på cirka 4,09% och 4,14%, med kvalitetsfaktorer på 88,38% och 97,72%. UKF anpassar sig väl i TurboTight, med medelvärdesfel på 3,50% (handhållna) och 5,23%(fixt rig) och kvalitetsfaktorer på 93,02% och 94,44%, respektive. Dynamiska strategier som Accelerating Tightening ger högre medelvärdesfel (10,33%) och kvalitetsfaktorer (94,86%), medan Paused Tightening resulterar i ett medelvärdesfel på 5,17% och en kvalitetsfaktor på 76,86%. Sammanfattningsvis understryker denna forskning den nära korrelationen mellan UKF:s prestanda och dynamiken i åtdragningsstrategin. Implikationerna sträcker sig till industriella tillämpningar och förespråkar strategispecifika justeringar för att förbättra noggrannheten i klämkraftsuppskattningen. Denna studie bidrar till att främja användningen av UKF i verkliga scenarier och tillhandahåller en grundläggande ram för att förbättra noggrannheten och tillförlitligheten i klämkraftsuppskattning. Clamping Froce Kalman Filtering Unscented Kalman Filtering Tightening Velocity Profiles Klämkraft Kalman Filtrering Unscented Kalman Filtrering Åtdragning Hastightersprofiler. Engineering and Technology Teknik och teknologier
84	Unfair Contract Terms in European Contract Law : Legal consequences for and beyond Swedish Contract Law / Oskäliga avtalsvillkor inom den Europeiska Avtalsrätten : Rättsföljder för svensk avtalsrätt Garrido Huidobro, Mattias January 2014 (has links) Recent case law from the ECJ on one of the most important EU contract law legislation has left questions open about the compatibility of Swedish contract law with the Unfair Contracts Term Directive. The case law on Article 6 (1) in the directive seem to have changed the view on how to deal with the legal consequence of an unfair term in consumer contracts; namely that unfair terms cannot be adjusted but need to be declared invalid. This essay examines how the effects from the ECJ case law provide new light upon Swedish contract law. The effect creates a clash of ideas and rationalities between Union law and Swedish contract law. Unfair terms cannot be adjusted as the relevant Swedish legislation provides. An unfair term needs to be invalid, and if necessary, such an unfair term can in certain circumstances be complemented with default rules from national contract law. This does not only seem to change the interpretation and application of the Swedish law, but it also form an underlying tension between the instrumental market-functional Union law and the more justice oriented Swedish private law. Furthermore, as we move towards a new European civil code, perhaps these tensions and clashes may say something about where the discipline of European Private Law is headed. contract terms legal consequence directive 93/13 consumer internal market European Private Law Swedish Contract Law effet utile justice Aristotle instrumentalism Camino Section 36 of the Contracts Act oskäliga avtalsvillkor direktiv 93/13 Camino rättsföljder konsument inre marknad instrumentalism effet utile rättvisa Aristoteles Europeisk Privaträtt
85	Do performance measurement reports address the problem of accountability in the public sector?: A case of Gauteng Municipalities Mahuni, Netsiwell 09 1900 (has links) Public organisations account for their performance by making annual reports available to the public. While such increased emphasis on performance leads to a greater awareness of annual reports, it also raises the question of whether performance information is relevant and effective for accountability purposes. This qualitative study uses the Critical Realism approach to assess the contribution of performance reports in making municipalities more responsible; and their managers accountable for achieved and failed service delivery targets. Content and thematic analyses are applied to the collected data following case studies on the metropolitan cities of Ekurhuleni, Johannesburg, and Tshwane in Gauteng, South Africa. The findings are that despite poor quality issues in reports, there is no link between performance and accountability. In other words, while performance reports have the capacity to correctly provide actual performance data, they are not used to hold public managers to account. Generally, politicians from underdeveloped countries are elected based on popularity rather than ability, hence they are reluctant to utilise performance reports, instead they tend to keep those public managers who look after their interest despite failures. Therefore, lack of consequences, complex governance systems, and passive citizenry, create a safe zone for both councillors and public managers to remain unaccountable. Further studies are recommended on empowering communities and accountability of councillors to citizens. / Business Management / M. Phil (Accounting Sciences) Public service accountability Municipality performance evaluation Service delivery assessment Relevant performance information Citizen empowerment Consequence management Complex governance Management controls Political protection Underperformance 352.43096822 Performance -- Evaluation Civil service -- South Africa -- Gauteng
86	Implementation and Analysis of Co-Located Virtual Reality for Scientific Data Visualization Jordan M McGraw (8803076) 07 May 2020 (has links) <div>Advancements in virtual reality (VR) technologies have led to overwhelming critique and acclaim in recent years. Academic researchers have already begun to take advantage of these immersive technologies across all manner of settings. Using immersive technologies, educators are able to more easily interpret complex information with students and colleagues. Despite the advantages these technologies bring, some drawbacks still remain. One particular drawback is the difficulty of engaging in immersive environments with others in a shared physical space (i.e., with a shared virtual environment). A common strategy for improving collaborative data exploration has been to use technological substitutions to make distant users feel they are collaborating in the same space. This research, however, is focused on how virtual reality can be used to build upon real-world interactions which take place in the same physical space (i.e., collaborative, co-located, multi-user virtual reality).</div><div><br></div><div>In this study we address two primary dimensions of collaborative data visualization and analysis as follows: [1] we detail the implementation of a novel co-located VR hardware and software system, [2] we conduct a formal user experience study of the novel system using the NASA Task Load Index (Hart, 1986) and introduce the Modified User Experience Inventory, a new user study inventory based upon the Unified User Experience Inventory, (Tcha-Tokey, Christmann, Loup-Escande, Richir, 2016) to empirically observe the dependent measures of Workload, Presence, Engagement, Consequence, and Immersion. A total of 77 participants volunteered to join a demonstration of this technology at Purdue University. In groups ranging from two to four, participants shared a co-located virtual environment built to visualize point cloud measurements of exploded supernovae. This study is not experimental but observational. We found there to be moderately high levels of user experience and moderate levels of workload demand in our results. We describe the implementation of the software platform and present user reactions to the technology that was created. These are described in detail within this manuscript.</div> Software Engineering Computer Software Computer Graphics Simulation and Modelling Virtual Reality and Related Simulation Mobile Technologies Networking and Communications Computer-Human Interaction Collaborative Virtual Reality Virtual Reality Collaborative Virtual Reality Networking Networked VR Mulitplayer Multiplayer VR Data Visualization Data Exploration Head Mounted Display Cyberspace Augmented Reality Emerging Technologies Consumer Devices Virtual Environment Virtual Aesthetics Collaborative VR Simulation Training Simulation and Training Colocated Colocated Virtual Environment Immersive Media Immersive Technology Collaborative Tools Educational Virtual Environment Point Cloud Representations Isosurface Representations Mesh Smoothng Supernova Supernovae Supernova Remnant Modeling Astronomy and Astrophysics Cassiopeia N132D E0102 Crab Nebula CAVE CAVE Theater Mobile VR Virtual Classrooms STEM Workload Workload Assessment Tool Presence Engagement Immersion Experience Consequence Simulator sickness Simulator Sickness Questionnaire NASA TLX NASA Task Load Index Unified User Experience Quesionnaire Modified User Experience Questionnaire Oculus Oculus Go Oculus Quest Novel Solutions Optitrack Motive Motion Capture Mocap User Experience Unity3D Game Engine Lidgren Room Scale VR Hall Scale VR Co-location Colocation Virtual Training Collaborative Virtual Environments Shared Virtual Environments Collaboration Whiteboard Mobile Virtual Reality VR HMD LAN UX CSCL UXQ TLX AR VE CVE 3D UI EVE

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