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检索条件"主题词=Human-centered computing"

共 2020 条记录，以下是1801-1810 订阅

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Evaluation of Optical See-Through Head-Mounted Displays in Training for Critical Care and Trauma 25

Evaluation of Optical See-Through Head-Mounted Displays in T...

引用

25th IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Azimi, Ehsan Winkler, Alexander Tucker, Emerson Qian, Long Sharma, Manyu Doswell, Jayfus Navab, Nassir Kazanzides, Peter Johns Hopkins Univ Baltimore MD 21218 USA Juxtopia LLC Baltimore MD USA Tech Univ Munich Munich Germany

ISBN: (纸本)9781538633656

One major cause of preventable death is a lack of proper skills for providing critical care. Conventional training for advanced emergency medical procedures is often limited to a verbal block of instructions and/or an instructional video. In this study, we evaluate the benefits of using an optical see-through head-mounted display (OST-HMD) for training of caregivers in an emergency medical environment. A rich user interface was implemented that provides 3D visual aids including images, text and tracked 3D overlays for each task. A user study with 20 participants was conducted for two medical tasks, where each subject received conventional training for one task and HMD training for the other task. Our results indicate that using a mixed reality HMD is more engaging, improves the time-on-task, and increases the confidence level of users.

关键词： human-centered computing Interaction paradigms Mixed / augmented reality human-centered computing Interaction design Interaction design process and methods User interface design

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Looking for a Black Cat in a Dark Room: Security Visualization for Cyber-Physical System Design and Analysis

Looking for a Black Cat in a Dark Room: Security Visualizati...

引用

15th IEEE Symposium on Visualization for Cyber Security (VizSec)

作者： Bakirtzis, Georgios Simon, Brandon J. Fleming, Cody H. Elks, Carl R. Virginia Commonwealth Univ Elect & Comp Engn Med Coll Virginia Campus Richmond VA 23284 USA Virginia Commonwealth Univ Syst Engn & Mech & Aerosp Engn Richmond VA USA

ISBN: (纸本)9781538681947

Today, there is a plethora of software security tools employing visualizations that enable the creation of useful and effective interactive security analyst dashboards. Such dashboards can assist the analyst to understand the data at hand and, consequently, to conceive more targeted preemption and mitigation security strategies. Despite the recent advances, model-based security analysis is lacking tools that employ effective dashboards-to manage potential attack vectors, system components, and requirements. This problem is further exacerbated because model-based security analysis produces significantly larger result spaces than security analysis applied to realized systems-where platform specific information, software versions, and system element dependencies are known. Therefore, there is a need to manage the analysis complexity in model-based security through better visualization techniques. Towards that goal, we propose an interactive security analysis dashboard that provides different views largely centered around the system, its requirements, and its associated attack vector space. This tool makes it possible to start analysis earlier in the system lifecycle. We apply this tool in a significant area of engineering design-the design of cyber-physical systems-where security violations can lead to safety hazards.

关键词： human-centered computing Visualization Visualization techniques Graph drawings human-centered computing Visualization Visualization systems and tools Visualization toolkits Security and privacy Systems Security Vulnerability management Security and privacy Security in hardware Embedded systems security

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EmbeddingVis: A Visual Analytics Approach to Comparative Network Embedding Inspection 13

EmbeddingVis: A Visual Analytics Approach to Comparative Net...

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13th IEEE Conference on Visual Analytics Science and Technology (VAST)

作者： Li, Quan Njotoprawiro, Kristanto Sean Haleem, Hammad Chen, Qiaoan Yi, Chris Ma, Xiaojuan Hong Kong Univ Sci & Technol Dept Comp Sci & Engn Hong Kong Peoples R China Tencent Technol Shenzhen Co Ltd WeChat Shenzhen Guangdong Peoples R China

ISBN: (纸本)9781538668610

Constructing latent vector representation for nodes in a network through embedding models has shown its practicality in many graph analysis applications, such as node classification, clustering, and link prediction. However, despite the high efficiency and accuracy of learning an embedding model, people have little clue of what information about the original network is preserved in the embedding vectors. The abstractness of low-dimensional vector representation, stochastic nature of the construction process, and non-transparent hyper-parameters all obscure understanding of network embedding results. Visualization techniques have been introduced to facilitate embedding vector inspection, usually by projecting the embedding space to a two-dimensional display. Although the existing visualization methods allow simple examination of the structure of embedding space, they cannot support in-depth exploration of the embedding vectors. In this paper, we design an exploratory visual analytics system that supports the comparative visual interpretation of embedding vectors at the cluster, instance, and structural levels. To be more specific, it facilitates comparison of what and how node metrics are preserved across different embedding models and investigation of relationships between node metrics and selected embedding vectors. Several case studies confirm the efficacy of our system. Experts' feedback suggests that our approach indeed helps them better embrace the understanding of network embedding models.

关键词： human-centered computing Visualization Visualization application domains-Visual analytics human-centered computing Visualization Visualization design and evaluation methods

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Activity Segmentation and Identification based on Eye Gaze Features 18

Activity Segmentation and Identification based on Eye Gaze F...

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11th ACM International Conference on Pervasive Technologies Related to Assistive Environments (PETRA)

作者： Segmentation, Activity Gollan, Benedikt Ferscha, Alois Heftberger, Josef Austria FG MbH Res Studios Pervas Comp Applicat Vienna Austria JKU Linz Insitute Pervas Comp Linz Austria Fischer Sports GmbH Ried Austria

ISBN: (纸本)9781450363907

In coherence with the ongoing digitalization of production processes, human Computer Interaction (HCI) technologies have evolved rapidly in industrial applications, providing abundant numbers of the versatile tracking and monitoring devices suitable to address complex challenges. This paper focuses on Activity Segmentation and Activity Identification as one of the most crucial challenges in pervasive computing, applying only visual attention features captured through mobile eye-tracking sensors. We propose a novel, application-independent approach towards segmentation of task executions in semi-manual industrial assembly setup via exploiting the expressive properties of the distribution-based gaze feature Nearest Neighbor Index (NNI) to build a dynamic activity segmentation algorithm. The proposed approach is enriched with a machine learning validation model acting as a feedback loop to classify segments qualities. The approach is evaluated in an alpine ski assembly scenario with real-world data reaching an overall of 91% detection accuracy.

关键词： Gaze Behavior Analysis Activity Segmentation Activity Identification human-centered computing

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Ordering Perceptions about Perceptual Order

Ordering Perceptions about Perceptual Order

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IEEE Scientific Visualization Conference (SciVis)

作者： Bujack, Roxana Turton, Terece L. Rogers, David H. Ahrens, James P. Los Alamos Natl Lab Los Alamos NM 87545 USA

ISBN: (纸本)9781538668825

One of the most important properties that inherently defines a good colormap is perceptual order. In the literature, we find a wide range of recommendations and hypotheses regarding order. Properties such as monotonicity in luminance, saturation, or hue are/are not stated as necessary/sufficient to ensure perceptual order. In this paper, we gather the most common statements about perceptual order and, when possible, prove or disprove them.

关键词： human-centered computing Visualization Visualization techniques Colormapping human-centered computing Visualization Visualization design and evaluation methods

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Transformative Experiences Become More Accessible Through Virtual Reality

Transformative Experiences Become More Accessible Through Vi...

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IEEE Workshop on Augmented and Virtual Realities for Good (VAR4Good)

作者： Stepanova, Ekaterina R. Quesnel, Denise Riecke, Bernhard Simon Fraser Univ Burnaby BC Canada

ISBN: (纸本)9781538659779

Virtual Reality (VR) has immersive powers that can teleport an immersant into a virtual world and provide them with an experience of being somewhere that they may not have been able to go to. These powers of VR are most often used for games and entertainment, creating a space for escapism and isolation that may have negative psychological and societal outcomes. In this paper, we argue for an opposing application of VR technology - for promoting wellness and feeling of connectedness with people and the world around us. Such feelings can be elicited as a result of a profound awe-inspiring experience, that expands one's mental model and consequently leads to a positive behavioral change. Such experiences are described as transformative, or in strong cases 'pivotal'. Unfortunately, these experiences are rare, only accessible by some people, and nearly unavailable for researchers interested in studying this phenomenon. The immersive powers of VR present a unique opportunity to reproduce such experiences in the lab or at home, thus making them accessible both to the public and to the researchers. Having real-time access to an experience of the immersant will allow the researchers to study the progression of the tranformative experiences and understand its effects and precursors. In this paper, we are proposing a framework through which transformative experiences can be studied in VR. Understanding this phenomenon will inform how VR experiences should be designed in order to create a positive impact on our society.

关键词： human-centered computing human Computer Interaction Interaction Paradigms Virtual Reality Applied computing Life and Medical Sciences Consumer Health Applied computing Education Interactive Learning Environments

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An AR-Guided System for Fast Image-Based Modeling of Indoor Scenes 25

An AR-Guided System for Fast Image-Based Modeling of Indoor ...

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25th IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Andersen, Daniel Popescu, Voicu Purdue Univ W Lafayette IN 47907 USA

ISBN: (纸本)9781538633656

We present a system that enables a novice user to acquire a large indoor scene in minutes as a collection of images that are sufficient for five degrees-of-freedom virtual navigation by image morphing. The user walks through the scene wearing an augmented reality head-mounted display (AR HMD) enhanced with a panoramic video camera. The AR HMD visualizes a 2D grid partitioning of a dynamically generated floor plan, which guides the user to acquire a panorama from each grid cell. The panoramas are registered offline using both AR HMD tracking data and structure-from-motion tools. Feature correspondences are established between neighboring panoramas. The resulting panoramas and correspondences support interactive rendering via image morphing with any view direction and from any viewpoint on the acquisition plane.

关键词： human-centered computing Mixed / augmented reality computing methodologies Virtual reality computing methodologies Image-based rendering

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Object Size Perception in Immersive Virtual Reality: Avatar Realism Affects the Way We Perceive 25

Object Size Perception in Immersive Virtual Reality: Avatar ...

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25th IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Ogawa, Nami Narumi, Takuji Hirose, Michitaka Univ Tokyo Tokyo Japan Univ Tokyo JST PREST Tokyo Japan

ISBN: (纸本)9781538633656

How does the representation of an embodied avatar influence the way in which a human perceives the scale of a virtual environment? It has been shown that the scale of the external environment is perceived relative to the size of one's body. However, the influence of avatar realism on the perceived scale has not been investigated, despite the fact that it is common to embody avatars of various representations, from iconic to realistic. This study examined how avatar realism would affect perceived graspable object sizes as the size of the avatar hand changes. In the experiment, we manipulated the realism (high, medium, and low) and size (veridical and enlarged) of the avatar hand, and measured the perceived size of a cube. The results showed that the size of the cube was perceived to be smaller when the avatar hand was enlarged for all degrees of realism of the hand. However, the enlargement of the avatar hand had a greater influence on the perceived cube size for the highly realistic avatar than for the medium-level and low-level realism conditions. This study shed new light on the importance of the avatar representation in a three-dimensional user interface field, in how it can affect the manner in which we perceive the scale of a virtual environment.

关键词： human-centered computing Virtual reality

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Employing Synergistic Interactions of Virtual Reality and Psychedelics in Neuropsychopharmacology

Employing Synergistic Interactions of Virtual Reality and Ps...

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IEEE Workshop on Augmented and Virtual Realities for Good (VAR4Good)

作者： Moroz, Matthew Carhart-Harris, Robin L. Univ Nevada Reno NV 89557 USA Imperial Coll London London England

ISBN: (纸本)9781538659779

The increased prevalence of various psychiatric disorders continue to concern [54, 71, 96]. Promising results are starting to emerge from recent experimental interventions employing VR [32, 81], and psychedelics [14, 69] individually. We propose that for certain pathologies researchers need not bother themselves as to which medium offers greater hope. Instead, we hypothesize that the most effective interventions shall necessarily come from a composite approach utilizing both. Traditional medicine adopts similar such synergistic strategies. Combining codeine and acetaminophen increases the analgesic effect. While research into the therapeutic effects of novel interventions using VR and psychedelics, independent of one another, is still in its infancy, we believe that the increased utility of a dual approach justifies closer examination without delay. We posit three main benefits from this integrated intervention. Increases in the efficacy of each individual paradigm due to synergistic coupling, and increases in specificity due to the ability to tailor bespoke therapies for particular individuals and groups, are achieved directly. Such increases in efficacy consequently lead to the third benefit of allowing a therapeutic effect to be achieved while using lower doses of a given psychedelic compound [19].

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality Applied computing Law, social and behavioral sciences Psychology

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Eventpad: Rapid Malware Analysis and Reverse Engineering using Visual Analytics

Eventpad: Rapid Malware Analysis and Reverse Engineering usi...

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15th IEEE Symposium on Visualization for Cyber Security (VizSec)

作者： Cappers, Bram C. M. Meessen, Paulus N. Etalle, Sandro van Wijk, Jarke J. Eindhoven Univ Technol Eindhoven Netherlands Radboud Univ Nijmegen Nijmegen Netherlands

ISBN: (纸本)9781538681947

Forensic analysis of malware activity in network environments is a necessary yet very costly and time consuming part of incident response. Vast amounts of data need to be screened, in a very labor-intensive process, looking for signs indicating how the malware at hand behaves inside e.g., a corporate network. We believe that data reduction and visualization techniques can assist security analysts in studying behavioral patterns in network traffic samples (e.g., PCAP). We argue that the discovery of patterns in this traffic can help us to quickly understand how intrusive behavior such as malware activity unfolds and distinguishes itself from the rest of the traffic. In this paper we present a case study of the visual analytics tool EventPad and illustrate how it is used to gain quick insights in the analysis of PCAP traffic using rules, aggregations, and selections. We show the effectiveness of the tool on real-world data sets involving office traffic and ransomware activity.

关键词： human-centered computing Visualization Visualization application domains Visual analytics Security Software and application security Software reverse engineering

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