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Monday, June 7 • 8:00am - 9:00am
Basic Research & Theory - Oral Presentations 5

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Implementing Decentralized Virtual Time in P2P Collaborative Learning Environment for Web XR
Nikolai Suslov
Krestianstvo.org, Russian Federation
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Virtual worlds and Web XR technologies offer to both programmers and domain experts nearly unlimited capabilities for creating novel computer-based simulated environments just in a web browser. Virtual time is becoming the new crucial concept of collaborative, immersive virtual learning environments (VLE). This paper explores the Croquet software architecture, which is known for its radical synchronization system with the notion of virtual time. It is ideal for developing collaborative serverless apps, but a tiny stateless server named reflector, on which Croquet heavily relies on still prevents doing that today. This paper presents the research, that transforms reflector into a peer-to-peer application Luminary, by implementing decentralized virtual time. The case study describes the prototype of a collaborative Rubik's Cube simulator, backed by three robots for kids. Finally showing how learners can easily experiment with augmenting physical reality, by creating fully synchronized, collaborative robots, operating in a P2P network.
METAL: Explorations into sharing 3D Educational content across Augmented Reality Headsets and Light Field Displays
Mengya Zheng, Xingyu Pan, Xuanhui Xu, Abraham Campbell
University College Dublin, Ireland
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Augmented Reality and Virtual Reality become increasingly popular in scientific visualization especially for education where they can support collaborative scientific visualization experiences in the classroom. However, the inherent limitations of head-mounted AR and VR tools are stemming the popularization of these existing content-sharing tools. Instead of sharing 3D educational content between AR/VR headsets, this paper proposes a novel prototype Mixed rEaliTy shAring pLatform (METAL) to allow for 3D educational content to be shared between a Microsoft HoloLens 2 and multiple Looking Glass displays which are a type of Light Field (Multi-view Autostereoscopic) display. This platform allows one teacher to use a HoloLens to manipulate and share different 3D contents with multiple student groups via the network, thus each student group can observe the synchronized 3D educational content with autostereoscopic experiences. Therefore, this proposed prototype enables a low-cost one-to-multiple 3D content sharing experience that allows intuitive 3D model interaction and seamless communication between the students and the teacher.
Design and Development of AR Applications in Online Higher Education A User-Centred Design Approach
Mitch Peters, Laura Calvet Liñan, Antoni Marín Amatller, Laura Porta Simó, Pierre Bourdin Kreitz
Open University of Catalonia, Spain
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The exploration of augmented reality’s (AR) potential in higher education teaching and learning demonstrates an impressive scope of critical inquiry. Online higher education (OHE) represents a transformation in learning practices and educational paradigms on a global scale, with a significant opportunity for the application of AR through e-learning. The overarching goal of the current study is to understand how the presence of AR applications in an OHE multimedia program impacts student learning. The study aims to design and develop a user-centered, AR prototype application that could be used to enhance student learning in STEM education. Implementing a user-centred approach ensures that learners are taken into account from the beginning of the design process and throughout the iterative design lifecycle. The current paper presents the results from the first phase of a multi-stage research project. First, conceptually designed personas, scenario reviews, and user journey mappings were developed based on identified learner needs and AR system requirements previously identified. The results show the design decisions made while revising AR scenarios from the learner’s perspective and exploring design requirements to ensure the feasibility of the AR application. An implication of our study is to demonstrate the value of a range of evaluation techniques presented here using a user-centred design approach, which can be used to design and develop future AR and Xtended reality technologies in educational scenarios.

avatar for Mitchell Joseph Peters

Mitchell Joseph Peters

Fundació per a la Universitat Oberta de Catalunya
avatar for Nikolai Suslov

Nikolai Suslov

Software engineer, Krestianstvo.org
Nikolai Suslov is a software engineer and researcher in computer science. His work is focused on virtual worlds software architecture, user-oriented self-exploratory integrated development environments, live coding, human-computer interaction, virtual reality. He is the creator and... Read More →
avatar for Mengya Zheng

Mengya Zheng

Ph.D. Candidate, University College Dublin
I am currently a Ph.D. candidate in the Computer Science Department at University College Dublin. My Ph.D. thesis is using Augmented Reality to visualize current and historical data for Precise Farming decision support explanation.

Monday June 7, 2021 8:00am - 9:00am EDT
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