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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.
1

Comparative Study of Body Doubling in Extended Reality

Annavarapu, Swetha 29 February 2024 (has links)
Body doubling is a mechanism that lets individuals work alongside someone on a monotonous task that they might not be able to focus on when they work alone. The person they work alongside is called a body double. It could be considered similar to co-working, but it gives individuals the freedom to work on anything that they want without feeling obligated to interact with the other person. This research aims to understand if body doubling is helpful to the users and how mixed reality body doubling can be a better addition to the existing mode of in-person and video-call based body doubling. In this work, we have recruited 40 participants to perform a user study where we have done a between-groups comparative study between a no body-double, in-person body double, a video-call based body double, and a mixed reality body double modes. Through these studies, we try to analyze if body doubling is helpful, and if so, which mode the participants are more inclined towards. The work also presents a few suggestions for future improvements. / Master of Science / Body Doubling, defined here, is in the context of a productivity strategy where a person is present beside an individual when they are working. This way, when the individual is working on a monotonous task, a person beside them would make them motivated to focus again. The person helping in body-doubling is called a ``Body Double''. This uses the concept of accountability that is felt in the presence of someone. Even though it seems similar to widely popular co-working, where job professionals share an office space to work together, in body-doubling, there is no interaction with the body-double, and in most cases, the two individuals might not be working on the same task. This research aims to understand if body doubling is helpful to users. In this work, we have recruited 40 participants to perform a user study where we have done a between-groups comparative study between a no body-double, in-person body double, a video-call based body double, and a mixed reality body double modes. It tries to show how mixed reality body doubling can be a better addition to the existing mode of in-person and video-call based body doubling. Through the user studies, we try to analyze if body doubling is helpful, and if so, which mode are the participants more inclined towards. The work also presents a few suggestions for future improvements.
2

Extended Reality Simulator for Advanced Training Life Support System

Donekal Chandrashekar, Nikitha 08 February 2023 (has links)
This research focuses on the design of an Extended Reality simulator for training medical professionals in Advanced Trauma Life Support (ATLS) and pulse palpation. Existing pulse simulators have the disadvantages of being bulky, expensive, and unsuitable to be used as training tools. In addition, none of the simulators were designed to incorporate the auditory feedback of the pulse, a crucial component of continuous pulse monitoring. The developed simulator incorporates haptic, visual, and auditory feedback modes. In this work, we also conduct a comparative user study to determine the effect of multimodal feedback on different participants. Participants trained in the Audio-Haptic scenario outperformed those trained in the Haptic only scenario. These values could also be correlated with qualitative user feedback indicating that Audio-Haptic interactions were perceived as superior. With this simulator, we hope to provide medical professionals with an immersive and realistic training tool for learning the skill of palpating pulse. / Master of Science / The medical field demands accurate and precise procedures to be performed by doctors, with no room for error. Traditional training methods consist of the trainer demonstrating the technique and the student duplicating it, which increases the risk of medical errors. Advanced Trauma Life Support (ATLS) is a program designed by the American College of Surgeons to teach physicians a systematic approach to treating trauma patients. Palpating and classifying pulses is one of the steps involved in the ATLS procedure. The majority of existing ATLS and pulse simulators are not fully integrated with haptic and auditory feedback, and there has been very little research on this topic. This work describes the design and development of an Extended Reality ATLS simulator with a pulse simulator for medical student training. We conduct a user study to determine how the Audio-Haptic scenario affects the learnability of palpating pulses and ATLS procedures. Our ATLS simulator aims to provide a comprehensive training module for emergency trauma response practice for medical professionals.
3

Layered Space: Toward an Architecture of Superimposition

Sambuco, Adam J. 24 September 2018 (has links)
No description available.
4

An Examination of Presence and Engagement in Video Conferencing Systems and Virtual Environments

Manuel, Mark Balfour 27 January 2022 (has links)
Extended Reality (XR) is an upcoming field of technology that has garnered interest from researchers in the last few decades. This increased interest is largely due to the development of powerful hardware like the Microsoft HoloLens, Oculus Quest and the Magic Leap. Several companies like Microsoft, Meta Platforms, Apple and Nvidia are touting the rise of a new "metaverse'' - the next generation of the internet, that will blur the lines between physical and virtual presence. This thesis explores the use of web-based XR platforms in Computer-Supported Cooperative Work (CSCW) as an alternative to contemporary video conferencing tools. We conducted a user study with 15 subjects to evaluate web-based XR platforms (Mozilla Hubs) with video conferencing (Zoom) and examined subject attention and success in remote collaborative tasks. We also proposed a new system design to support embodied interactions in XR. This system was tested by measuring the communication latency between two collaborators separated by varying distances. Our system performance evaluation suggests the feasibility of support embodied interactions, with a minimal latency of 120ms across a distance of 4700 miles. / Master of Science / Extended Reality (XR) is changing the way we interact with digital content. In 2021, several companies like Microsoft, Meta Platforms, Apple and Nvidia are developing devices that allow users to physically interact with virtual content in 3-dimensional space. These technologies bring with them the promise of better remote communication and collaboration. Users will be able to enter these 3d virtual spaces as avatars and will be able to interact with digital media just like they would with real world objects. This thesis explores the use of web-based XR platforms in supporting remote collaboration as an alternative to contemporary video conferencing tools. We conducted a user study with 15 subjects to compare differences in web-based XR platforms (Mozilla Hubs) with video conferencing (Zoom). We proposed and evaluated a new system design to support more natural and intuitive interactions in XR. This system was tested by measuring the communication latency between two collaborators separated by varying distances. Our system performance evaluation suggests the feasibility of support embodied interactions, with a minimal latency of 120ms across a distance of 4700 miles.
5

An Evaluative Study on the Impact of Immersion and Presence for Flight Simulators in XR

Dahlkvist, Robin January 2023 (has links)
Flight simulators are a central training method for pilots and with the advances of human-computer interaction, new cutting-edge technology introduces a new type of simulator using extended reality (XR). XR is an umbrella term for many representative forms of realities, where physical reality (PR) and virtual reality (VR) are the endpoints of this spectrum, and any reality in between can be seen as mixed reality (MR). The purpose of this thesis was to investigate the applicabilities of XR and how they can be compared with each other in terms of usability, immersion, presence, and simulator sickness for flight simulators, respectively. To answer these questions, a MR and a VR version was implemented in Unity using the Varjo XR-3 head-mounted display based on the Framework for Immersive Virtual Environments (FIVE). To evaluate these aspects, a user study (N = 11) was conducted, focusing on quantitative and qualitative experimental research methods. Interaction with physical interfaces is a core procedure for pilots; thus, three reaction tests were conducted with the goal of pressing a random button that is lit green for a 3 x 3 Latin square layout for a given time to measure the efficiency of interaction for both versions. Reaction tests were conducted in different complexities: Simple (no flight), moderate (easy flight), and advanced (difficult flight). Participants experienced the MR and VR versions, and completed complementary questionnaires on immersion, presence, and simulator sickness while remaining in the simulation. The user study showed that the usability in MR is considerably higher, and more immersive than VR when incorporating interaction. However, excluding the interaction aspects showed that VR was more immersive. Overall, this work demonstrates how to achieve high levels of immersion, and a high elicitation of sense of presence, simultaneously while having minuscule levels of simulator sickness with a relatively realistic experience. / Flygsimulatorer är en central träningsmetod för piloter, och med framsteg inom människa-datorinteraktion introduceras ny, toppmodernt teknik som använder utökad verklighet (XR) för en ny typ av simulator. XR är ett samlingsbeteckning för många olika former av verkligheter, där den fysiska verkligheten (PR) och den virtuell verklighet (VR) är ändpunkterna på detta spektrum, och alla verkligheter däremellan kan ses som blandad verklighet (MR). Syftet med denna avhandling var att undersöka tillämpbarheten av XR och hur de kan jämföras med varandra när det gäller användbarhet, immersion, närvaro och simulatorsjuka för flygsimulatorer. För att besvara dessa frågor implementerades en MR- och en VR-version i Unity med hjälp av Varjo XR-3 huvudmonterad display baserat på ramverket för immersiva virtuella miljöer FIVE. För att utvärdera dessa aspekter genomfördes en användarstudie (N = 11), med fokus på kvantitativa och kvalitativa experimentella forskningsmetoder. Interaktion med fysiska gränssnitt är en kärnprocedur för piloter; Därför genomfördes tre reaktionstester med målet att trycka på en slumpmässig knapp som lyser grönt för en 3 x 3 latinsk kvadrat under en given tid för att mäta interaktionens användbarhet för båda versionerna. Reaktionstesterna genomfördes under olika komplexiteter: Enkel (utan flygning), måttlig (enkel flygning) och avancerad (svår flygning). Deltagarna upplevde MR- och VR-versionerna och fyllde i kompletterande enkäter om immersion, närvaro och simulatorsjuka medan de var kvar i simuleringen. Användarstudien visade att användbarheten i MR är betydligt högre och mer immersiv än i VR när man inkluderar interaktion. Exkluderar man interaktionsaspekter visade det sig att VR var mer immersiv. Sammantaget visar detta arbete hur man kan uppnå höga nivåer av immersion och hög framkallning av sinnesnärvaro samtidigt som man har minimala nivåer av simulatorsjuka med en relativt realistisk upplevelse.
6

Implementation of Extended Realityin Swedish Healthcare : A Study on Implementation of Technology in the Swedish Healthcare Industry / Implementering av extended realityi svensk sjukvård : En studie om implementering av teknologi inom sjukvården

Selin, Carl-Johan, Iwarsson, Hannes January 2022 (has links)
Extended reality solutions are becoming increasingly relevant for companies to implementand use commercially. One sector that have shown great potential and can benefit from implementing this type of technology is the healthcare industry. More specifically, for solutions connected to medical devices. Meanwhile, the healthcare industry has generally been particularly slow at adopting new technologies. Digitalization has been observed to progress at a slower pace than in other sectors. This study investigated why technology is progressing at slow pace and identified critical drivers and bottlenecks that affect the implementation of extended reality within healthcare. This was done through a case study on a proof concept project where the value of a mixed reality solution in the healthcare sector was investigated. This was particularly interesting as the tested solution was the first of its kind in Sweden. The results of the study revealed several barriers within the healthcare sector, including conservatism in the industry, lack of incentives, lack of absorption as well as data protection and privacy issues. Furthermore, theresults revealed that implementation of XR solutions into Swedish healthcare is in first phase. However, underlying drivers imply that there is value in further development. Especially, since the proof of concept was considered successful and showed signs of progressing to the next stage of implementation.
7

Augmented Reality Contact Lenses: An Investigation of Technology Acceptance Drivers from a Potential User Perspective

Gmeinwieser, Korbinian, Schock, Nikolas January 2020 (has links)
Background: Augmented Reality (AR) could be the next revolutionary technology after the personal computer, the internet and the mobile era. While AR Smart Glasses are already on the market, AR Contact Lenses (ARCL) are still in the stage of research and development, but likely to replace the smartphone in the near future. Purpose: The purpose of this thesis is the identification of key factors influencing the acceptance of ARCL from a potential user perspective to gather early-stage pre-market knowledge and extend the Technology Acceptance Model (TAM) literature to this novel wearable technology. Method: An explanatory online survey was conducted to test the hypotheses in an extended TAM. Data from 250 respondents up to an age of 34 years, representing the potential target group was collected. Partial Least Squares Structural Equation Modeling (PLS-SEM) was used to assess the measurement model in terms of validity and reliability and the structural model in terms of hypotheses testing and strength of relationships between proposed variables. In addition, a multigroup analysis was examined to identify significant differences among groups. Conclusion: The results show that the attitude, which is strongly influenced by perceived usefulness, is the major key determinant affecting potential users’ behavioral intention to adopt ARCL in the future, followed by subjective norms. Furthermore, a strong influence of personal innovativeness on both antecedents of attitude, perceived usefulness and perceived ease of use was identified. Moreover, moderating effects of educational background, knowledge of ARCL and usage of contact lenses were discovered.
8

Synergies of radical paradigms and emerging technologies in knowledge production for transforming the modernist urban design. A focus on artificial intelligence, extended reality and sensor technology

Ingaruca, Melissa January 2019 (has links)
Emerging technologies, such as; Artificial Intelligence, extended reality technologies (MR, AR and VR), and sensor technologies are increasingly used during knowledge production within urban design processes. This thesis shows that the combination of different paradigms underlying experimental initiatives that bring together design and technology can lead to either vicious loops that continue to reinforce the modernist city, or virtuous loops where the interweaving of fundamentally different paradigms of knowledge production with emerging technology possess potential for radical urban transformation.  The key findings of this work include: Sensorial ways of knowing the city can be in synergy with these emerging technologies 1) augmenting our human senses and overcoming spatial-temporal constraints in experiencing ecological change, 2) they can create fully embodied experiences of sidelined or marginalized narratives in urban planning and the future of cities, 3) they open up new space for more collaboration in research design and planning. In the same way, democratization and co-production of knowledge for urban design, can be in synergy with these emerging technologies that; 1) allow for the expansion of collaboration and the integration of multiple sources of knowledge, 2) that promote an open relation with the future by rapid prototyping of alternative scenarios, and that 3) democratize the power over the process of data collection and data analysis all the way to ‘open-sourcing’ the tools themselves.
9

From Pixels to Culture : Gamification and Extended Reality in the Modern Museum

Gkizis Chatziantoniou, Nikolaos January 2023 (has links)
This thesis aims to explore the theory, implementation, and critical aspects of gamification and extended reality employed within the cultural sector. More specifically the impact of gamification and virtualization on the information dissemination by the institutions and what it means for the visitor as well as the challenges that arise with the use of such technologies and potential points of criticism. The role of digitalization of memory institutions will be examined, with a focus on gamification/virtualization from both the museum’s professionals’ experiences and the visitors’ perspectives as well as the utilization of gamification and virtualization for the preservation of cultural heritage. The relevant data will be extracted using semi-structured interviews and conducting a literature study for five modes of virtualization and gamification. The thesis will conclude by summarizing the contribution of gamification and extended reality and highlight the benefits and challenges arising from the implementation of such elements. The main findings showcase that gamification and virtualization are not just generic additions to museum exhibitions, they signify the crossing towards a new type of learning while experiencing culture more critically and shifting the focus not only towards the visitor but also to a new type of visitor.
10

Former à la conception d’expériences de réalité étendue : vers un champ d’études et de pratique en design et médiation de futurs

Filion-Mallette, Ronald 10 1900 (has links)
Ce mémoire porte sur l’enseignement universitaire du design formant à la conception des expériences de la réalité étendue (RE). Il s’agit d’une modalité évolutive de médiation expérientielle qui intègre l’ensemble de celles établies (RA, RV, RM). Nous étudions les potentialités des expériences qui, lorsqu’elles sont actualisées grâce à des technologies prêt-à- porter sur ou en soi, peuvent modifier in situ la réalité perçue pour fluidifier, enrichir, ou enchanter l’existence de l’être humain évoluant à l’intersection de l’actuel-physique et du virtuel- numérique. Dans une perspective prospectiviste révélant la pratique du projet de design comme la conception de ces expériences constitutives de nos futurs préférables, nous abordons la médiation du cadre de la vie quotidienne au prisme expérientiel du modèle ontophanique unifiant de la « réalité multiplis » (Courchesne, 2012). Si le projet, nous amenant à avoir une expérience mémorable et indivisible des multiples plis de notre réalité qui s’enrichit, génère de nouveaux axes de recherche et de création au croisement des disciplines œuvrant à son avancement, il pose aussi des défis croissants aux divers programmes d’études et de pratique qui y préparent – défis pourtant peu abordés au sein des écoles de design. Notre recherche vise à développer l’enseignement universitaire du design formant à la conception des expériences à la fois immersives et nomades de la réalité étendue (RE). À cette fin, nous avons effectué une revue de littérature qui porte sur les principales modalités établies de médiation expérientielle, sur la nomadisation des expériences immersives dans la vie de tous les jours, et sur la méthodologie de la recherche en éducation. Ce chapitre qui constitue la charpente de notre cadre théorique nous conduit à élaborer une stratégie méthodologique mixte organisant la recherche sur le terrain en trois parties. Nous débutons par la réalisation 1) d’une étude de cas visant à mieux comprendre, par la pratique réflexive, la conception de l’expérience immersive et nomade dont nous modélisons le projet. Le modèle est ensuite mis à l’épreuve dans l’enseignement, grâce à 2) une enquête par questionnaire (n = 54), afin d’identifier les principaux défis rencontrés par les étudiants. Ces défis servent à vérifier la pertinence de l’offre de cours dans l’analyse comparative de 3) deux recensements comprenant trente-six programmes d’un système universitaire développé. À la lumière de nos résultats, nous concluons la recherche en introduisant un modèle synthèse inédit qui structure un nouvel axe d’enseignement en design et médiation des futurs. Nous espérons que ce modèle pourra contribuer au développement de l’enseignement universitaire qui forme à la conception des expériences de la réalité étendue (RE) dans les divers champs d’études et de pratique du design. / This thesis focuses on design education aimed at the design practice of extended reality (XR) experiences defined as an evolving modality of experiential mediation which integrates all of those established (AR, VR, MR). We study the potential of these experiences which, when they are actualized using wearable technologies on or in ourselves, can modify in situ our perceived reality to fluidify, enrich, or enchant the existence of the human being evolving at the intersection of the actual-physical and the virtual-digital. From a foresight perspective revealing design practice as the conception of these constitutive experiences of our preferable futures, we approach the mediation of the daily life through the experiential prism of the unifying ontophanic “multifold reality” model (Courchesne, 2012). If the project leading us to have a memorable and indivisible experience of the multiple folds of our extending reality generates new research and creation axes, at the crossroads of disciplines working towards its advancement, it also poses growing challenges to most programs of studies and practice in design – challenges that are not often addressed in design schools. Our research seeks to develop design education that trains to both immersive and nomad extended reality (XR) experiences. To this end, we conducted a review of the literature on the main established modalities of experiential mediation, on the nomadization of immersive experiences in everyday life, and on the research methodology in education. This chapter, which constitutes our theoretical framework, leads us to develop a mixed methods strategy by organizing our research into three parts. We begin by 1) a case study aimed at better understanding, through reflective practice, of the design of immersive and nomad experience, which we model the project. The model is then put to the test in teaching, using a 2) a questionnaire survey (n = 54), to identify the main challenges encountered by the students. These challenges are crossed with the comparative analysis of 3) two lists comprising thirty-six programs of a developed university system, with the aim of verifying the relevance of the course offer. In the light of our results, we conclude the research by introducing a novel synthesis model that structures a new teaching axis in design and futures mediation. We hope that this model can contribute to the development of design education training to extended reality (XR) experiences in the various fields of studies and practice of design.

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