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IEEE Conference on Visualization and Visual Analytics (IEEE VIS)

作者： Wang, Jinrui AlKadi, Mashael Bach, Benjamin Univ Edinburgh Edinburgh Midlothian Scotland Imam Abdulrahman Bin Faisal Univ Dammam Saudi Arabia

ISBN: (纸本)9798350325577

This paper describes the design of a dashboard and analysis pipeline to monitor users of visualization tools in the wild. Our pipeline describes how to extract analysis KPIs from extensive log event data and a mix of user types. The resulting three-page dashboard displays live KPIs, helping analysts to understand users, detect exploratory behaviors, plan education interventions, and improve tool features. We propose this case study as a motivation to use the dashboard approach for a more 'casual' monitoring of users and building carer mindsets for visualization tools.

关键词： human-centered computing Visualization Visualization design and evaluation methods human-centered computing Visualization Visualization application domainsVisual Analytics

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Towards Cross-Reality Interaction and Collaboration: A Comparative Study of Object Selection and Manipulation in Reality and Virtuality

Towards Cross-Reality Interaction and Collaboration: A Compa...

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Zhang, Shuhao Li, Yue Man, Ka Lok Yue, Yong Smith, Jeremy Xian Jiaotong Liverpool Univ Sch Adv Technol Xian Peoples R China Univ Liverpool Dept Elect Engn & Elect Liverpool Merseyside England

ISBN: (纸本)9798350348392

Cross-Reality (CR) is an important topic for the research of multiuser collaborative systems. It allows users to participate in the reality-virtuality continuum and select appropriate interactive systems to work with, such as Virtual Reality Head-Mounted Displays (VR HMDs). However, there is limited work showing how interaction in VR differs from the more commonly used Personal Computers (PCs) and tablet devices in terms of object selection and manipulation. In this paper, we present a comparative study that investigated how users perform and perceive workload on 3D object selection and manipulation tasks using different devices (e.g. PC, tablet, and VR). We recorded the time and accuracy as objective task performance measures, and users' self-reported workload as a subjective measure. Our results revealed that unlike the biased performances of PC and tablet, VR has a balanced performance and great potentials in complex tasks.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality human-centered computing human computer interaction (HCI) HCI design and evaluation methods User studies

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Design of the Seated Navigation for Immersive Lower Limb Exergame

Design of the Seated Navigation for Immersive Lower Limb Exe...

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Chung, Yu-Yen Annaswamy, Thiru M. Prabhakaran, Balakrishnan Univ Texas Dallas Richardson TX 75083 USA Penn State Rehabil Hosp Penn State Hlth Milton S Hershey Med Ctr Hummelstown PA USA

ISBN: (纸本)9798350348392

Immersive lower limb exergames have been used to motivate physical training or rehabilitation. Due to the relative constraint on mobility in the seated pose, interacting with the distanced object using the leg could he challenging. To tackle the challenge, we describe the detailed design and implementation of Dual Point -Tugging (DPT) seated navigation. The DPT interface unifies the translation and rotation, allowing users to refine their position and extend leg reachability in the immersive virtual environment. Also, by rearranging the arm position, the user could continuously perform swift translation around a spot in a comfortable and balanced pose.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality

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TENETvr: Comprehensible Temporal Teleportation in Time-Varying Virtual Environments 22

TENETvr: Comprehensible Temporal Teleportation in Time-Varyi...

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22nd IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Rupp, Daniel Kuhlen, Torsten Weissker, Tim Rhein Westfal TH Aachen Visual Comp Inst Aachen Germany

ISBN: (纸本)9798350328387

The iterative design process of virtual environments commonly generates a history of revisions that each represent the state of the scene at a different point in time. Browsing through these discrete time points by common temporal navigation interfaces like time sliders, however, can be inaccurate and lead to an uncomfortably high number of visual changes in a short time. In this paper, we therefore present a novel technique called TENETvr (Temporal Exploration and Navigation in virtual Environments via Teleportation) that allows for efficient teleportation-based travel to time points in which a particular object of interest changed. Unlike previous systems, we suggest that changes affecting other objects in the same time span should also be mediated before the teleport to improve predictability. We therefore propose visualizations for nine different types of additions, property changes, and deletions. In a formal user study with 20 participants, we confirmed that this addition leads to significantly more efficient change detection, lower task loads, and higher usability ratings, therefore reducing temporal disorientation.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality human-centered computing Interaction design Interaction design process and methods User interface design

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Participatory Design, Development, and Testing of Assistive Health Robots with Older Adults: An International Four-year Project

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ACM TRANSACTIONS ON human-ROBOT INTERACTION 2022年第4期11卷 1–19页

作者： Gasteiger, Norina Ahn, Ho Seok Lee, Christopher Lim, Jongyoon MacDonald, Bruce A. Kim, Geon Ha Broadbent, Elizabeth Univ Auckland Dept Psychol Med 28 Pk Ave Grafton Auckland 1023 New Zealand Univ Auckland Dept Elect Comp & Software Engn 5 Grafton Rd Auckland 1010 New Zealand Ewha Womans Univ Mokdong Hosp Coll Med Dept Neurol 1071 Anyangcheon Ro Seoul South Korea

Participatory design includes stakeholders in the development of products intended to solve real-life challenges. Involving end users in the design of robots is vital for developing effective, useful, acceptable and user-friendly products that meet expectations, needs, and preferences. This four-year international project developed and evaluated a home-based robot for mood stabilization and cognitive improvement in older adults with mild cognitive impairment and age-related health needs. The daily-care robot was developed in collaboration with experts, carers, relatives, and older adults, through six phases. Two phases were dedicated to cognitive stimulation games. This paper provides a summary of the participatory design and mixed-methods evaluation processes undertaken to develop, refine, and test the robot. The final robot and games were acceptable to older adults, and useful for delivering stimulating activities and providing reminders for medication, health and wellbeing checks. Personalization is required to optimize human-robot interaction, and imagery and speech should be consistent with local users. Functions should be personalizable to accommodate individual health needs and preferences. This project highlights the importance of participatory design and testing robotics in end-user environments, as technical issues associated with long-term use were uncovered. Recommendations for future development and the design of assistive health robots are made.

关键词： Participatory design human-robot interaction user perspective cognitive robots assistive robots gerontechnology human-centered computing human computer interaction (HCI) HCI design and evaluation methods usability testing

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Comparison of Physiological Cues for Cognitive Load Measures in VR

Comparison of Physiological Cues for Cognitive Load Measures...

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Ahmadi, Mohammad Bai, Huidong Chatburn, Alex Najafabadi, Marzieh Ahmadi Wunsche, Burkhard C. Billinghurst, Mark Univ Auckland Empath Comp Lab Auckland New Zealand Univ South Australia Adelaide SA Australia Univ Ontario Inst Technol Oshawa ON Canada Univ Auckland Sch Comp Sci Auckland New Zealand

ISBN: (纸本)9798350348392

Cognitive load (CL) is an important measure for detecting whether a user is struggling with a task. Many researchers have investigated physiological cues for measuring CL, such as pupil dilation, galvanic skin response (GSR), heart rate, and electroencephalography (EEG). However, physical activity can often affect the measured signals, so it is unclear how suitable these measures are for use in Virtual Reality (VR). In this paper we present a VR game, PlayMeBack, for measuring users' CL using different physiological cues. In the game, the user is shown different patterns of tiles lighting up and is asked to replay the patterns by pressing tiles in the same sequence. Task difficulty increases with the length of the lighting pattern. We found that for this type of VR environment, EEG and GSR are the most reliable physiological cues for measuring the user's cognitive load, whereas pupil dilation and heart rate did not vary significantly with increasing task difficulty.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality

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DBA: Direction-Based Authentication in Virtual Reality

DBA: Direction-Based Authentication in Virtual Reality

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Huang, Yuxuan Zhang, Danhua Rosenberg, Evan Suma Univ Minnesota Minneapolis MN 55455 USA

ISBN: (纸本)9798350348392

To protect the privacy and security in the emerging metaverse, various authentication methods have been designed for virtual reality. In this paper, we propose a novel selection-based authentication method called the Direction-Based Authentication (DBA). To enter a password. the user visits a sequence of four different environments and selects a direction in each of them as a symbol via either physical turning or panel-controlled snap-turning. The goal is to provide an authentication technique that is both memorable and efficient to use without compromising its security. Preliminary testing shows that the entry time of DBA can be as short as 6-12 seconds.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality Security and privacy human and societal aspects of security and privacy Usability in security and privacy

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AR-Based Educational Software for Nonspeaking Autistic People - A Feasibility Study 22

AR-Based Educational Software for Nonspeaking Autistic Peopl...

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22nd IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Shahidi, Ali Alabood, Lorans Kaufman, Kate M. Jaswal, Vikram K. Krishnamurthy, Diwakar Wang, Mea Univ Calgary Calgary AB Canada Univ Virginia Charlottesville VA USA

ISBN: (纸本)9798350328387

Approximately one-third of individuals with autism are nonspeaking: They cannot communicate effectively using speech. Some traditional accounts suggest that these individuals cannot talk because they lack the symbolic capacity for language. And yet, recent studies have shown that these individuals' cognitive abilities are vastly underestimated by standardized tests, and that difficulties with motor skills and movement contribute to their difficulty with speech. One consequence of the traditional accounts of nonspeaking autism is that life skills (rather than academic content) tend to be emphasized in schooling. Without access to meaningful academic content, their educational and vocational opportunities are significantly limited. Recent studies have proposed the use of head-mounted Augmented Reality (AR) applications as a means of providing engaging, customizable, and age-appropriate content to this population. Specifically, such applications can address the unique sensory and motor needs of nonspeaking autistic students, e.g., allow them to move freely around the room as they interact with lessons in the application. This paper describes the design and evaluation of the first AR application aimed to facilitate tailored educational experiences for nonspeaking autistic students. After extensive consultations with nonspeaking people, parents, and professionals, we developed our application to run on HoloLens 2 offering lessons and multiple-choice comprehension and spelling questions. We conducted a study involving five nonspeaking autistic participants and two specialized educators. Through a design critique process and an iterative design refinement approach, we show that most of our participants successfully interacted with the application and completed different types of lesson tasks. Based on quantitative data from the study sessions and qualitative feedback from participants and educators, we provide recommendations for UI and UX design that will promote the deve

关键词： human-centered computing Usability testing

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Data Abstraction Elephants: The Initial Diversity of Data Representations and Mental Models 23

Data Abstraction Elephants: The Initial Diversity of Data Re...

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CHI conference on human Factors in computing Systems (CHI)

作者： Williams, Katy Bigelow, Alex Isaacs, Katherine Univ Arizona Tucson AZ 85721 USA Stardog Arlington VA USA SCI Inst Salt Lake City UT USA Kahlert Sch Comp Salt Lake City UT USA

ISBN: (纸本)9781450394215

Two people looking at the same dataset will create different mental models, prioritize different attributes, and connect with different visualizations. We seek to understand the space of data abstractions associated with mental models and how well people communicate their mental models when sketching. Data abstractions have a profound influence on the visualization design, yet it's unclear how universal they may be when not initially influenced by a representation. We conducted a study about how people create their mental models from a dataset. Rather than presenting tabular data, we presented each participant with one of three datasets in paragraph form, to avoid biasing the data abstraction and mental model. We observed various mental models, data abstractions, and depictions from the same dataset, and how these concepts are influenced by communication and purpose-seeking. Our results have implications for visualization design, especially during the discovery and data collection phase.

关键词： human-centered computing visualization theory data abstractions

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Towards Trustworthy Augmented Reality in the Metaverse Era: Probing Manipulative Designs in Virtual -Physical Commercial Platforms

Towards Trustworthy Augmented Reality in the Metaverse Era: ...

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： de Haas, Esmee Huang Yiming Bermejo, Carlos Lin, Zijun Hui, Pan Lee, Lik-Hang Korea Adv Inst Sci & Technol Daejeon South Korea Hong Kong Univ Sci & Technol Hong Kong Peoples R China London Sch Econ & Polit Sci London England Hong Kong Univ Sci & Technol Guangzhou Hong Kong Peoples R China Hong Kong Polytech Univ Hong Kong Peoples R China

ISBN: (纸本)9798350348392

E-commerce has become an important activity where new advances in technology shape the shopper experience. At the same time, the metaverse is seen as the next milestone to revolutionize the e-commerce experience, where immersion, realism, and ubiquity are its main features. However, under such circumstances, manipulative designs to 'trick' users toward intended choices or outcomes can become more effective. This paper sheds light on the design space of manipulative techniques in e-commerce applications for the metaverse, reinforcing our understanding of interface design guidelines and counteracting malicious practices.

关键词： human-centered computing human computer interaction Interaction paradigms Mixed/ augmented reality & Virtual reality human -centered computing User experience User experience & usability

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