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11th International Conference of the Learning Sciences: Learning and Becoming in Practice, ICLS 2014

作者： Yip, Jason Clegg, Tamara Ahn, June Bonsignore, Elizabeth Gubbels, Michael Rhodes, Emily Lewittes, Becky Joan Ganz Cooney Center at Sesame Workshop United States University of Maryland Human-Computer Interaction Lab United States

ISBN: (纸本)9781732467200

Ownership of science learning is defined as learners being able to fully participate in the practicing culture of science, having greater control and possession over the ideas put forth, knowledge developed, and the science learning process. While ownership is beneficial to promoting science engagement, in this study, we show that conflicts in ownership of science learning manifest and can hinder learning. We document three focal learners who faced tensions and conflicts in their ownership of science learning. Specifically, we examine how learners' development and conceptions of ownership at home and school influenced how ownership of learning was expressed in an afterschool program called Kitchen Chemistry (KC). We argue that learners' expressions of ownership are a reflection of their identity development in science and that conflicts are a part of this manifestation. © 2014 ISLS.

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Interactive and live performance design with children 14

Interactive and live performance design with children

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13th International Conference on interaction Design and Children, IDC 2014

作者： Rust, Karen Foss, Elizabeth Bonsignore, Elizabeth McNally, Brenna Hordatt, Chelsea Malu, Meethu Mei, Bie Gumbs, Hubert Kofi Human-Computer Interaction Lab. University of Maryland 2117 Hornbake Library South Wing College Park MD 20742 United States

ISBN: (纸本)9781450322720

Performative Experience Design (PED) is an extension of experience design focusing on the unique time-bound encounter between performers and spectators. Technology is purposefully designed to enhance the experience between audience and performers. PED has been studied with adult participants;however, it has not been explored with children. We conducted a Cooperative Inquiry session to explore 1) how children want to interact with live performances;2) how they seek to change a story in live performances;and 3) a specific technique that might facilitate designing for such interactions. We present our initial findings regarding children's perceptions of what constitutes live performance and the ways in which children want to use technology to interact with, direct, and respond to narrative structures and characters within live performances. We include a discussion of the features of a specific co-design technique for supporting the ideation process of our child designers. Copyright 2014 ACM.

关键词： Design

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Motion estimation of multiple depth cameras using spheres

Motion estimation of multiple depth cameras using spheres

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作者： Deng, Xiaoming Liu, Jie Tian, Feng Chang, Liang Wang, Hongan Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Sciences China College of Information Science and Technology Beijing Normal University China

ISBN: (纸本)9781479957514

Automatic motion estimation of multiple depth cameras has remained a challenging topic in computer vision due to its reliance on the image correspondence problem. In this paper, spherical objects are employed to estimate motion parameters between multiple depth cameras. We move a sphere several times in the common view of depth cameras. We fit the spherical point clouds to get the sphere centers in each depth camera system, and then introduce a factorization based approach to estimate motions between the depth cameras. Both simulated and real experiments show the robustness and effectiveness of our method. © 2014 IEEE.

关键词： Motion estimation

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Real-time collision detection with two-level spatial hashing on GPU 22

Real-time collision detection with two-level spatial hashing...

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22nd Pacific Conference on computer Graphics and Applications, PG 2014

作者： Hong, Yang Wu, Wen Chen, Hui Department of Computer and Information Science Faculty of Science and Technology University of Macau China Department of Computer Science and Engineering The Chinese University of Hong Kong Hong Kong Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Science Beijing China

ISBN: (纸本)9783905674736

In this paper, a two-level parallel spatial hashing method is presented for real-time collision detection of deformable objects based on modern GPU architecture. The second-level of spatial hashing is used to improve the culling efficiency. Moreover, a novel encoding method on GPU is proposed to compensate the inflexibility of the GPU memory system. It can efficiently determine the colliding pairs of primitives between deformable objects. The experimental results show that our method can perform high culling efficiency with low memory cost. © The Eurographics Association 2014.

关键词： Graphics processing unit

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Design and evaluation of web interfaces for informal care providers in senior monitoring

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Proceedings of the Association for Information Science and Technology 2014年第1期50卷 1-10页

作者： Lu Xiao Xueheng Yan Alison Emery Human-Computer Interaction Lab Faculty of Information & Media Studies The University of Western Ontario London ON Canada

It has been recognized that most seniors prefer to age in a place with familiar surroundings until their health makes this impossible. In an attempt to address the aging phenomenon, as well as recognize seniors' preference, we worked with a Canada-based company that develops a sensor-based home monitoring system for people to monitor the home activities of independently living seniors. Our role was to develop web interfaces that present sensor data to the intended web users – the seniors' informal care providers (e.g., their close friends or family members). In this paper, we present the information design and the web interface prototypes, and report the results of our formative evaluations through cognitive walkthrough and heuristic evaluation methods. The common problems discovered in both methods were problematic notification mechanism, inconsistency, background and layout. Each method also detected usability issues that the other did not. Our work adds more empirical evidence to the importance of combining evaluation methods in a study. The experiences in this study also helped us reflect on approaches and strategies when working with industry partners.

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26th Annual Computational Neuroscience Meeting (CNS*2017) of the Organization for Computational Neuroscience Antwerp, Belgium, July 15-20, 2017

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BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 59-59页

作者： [Anonymous] Indiana University Purdue University Indianapolis Indianapolis IN 46032 USA Stark Neurosciences Research Institute Indiana University School of Medicine Indianapolis IN 46032 USA Department of Mathematics East Carolina University Greenville NC 27858 USA Jülich Supercomputing Centre Forschungszentrum Jülich 52425 Jülich Germany Future Systems Swiss National Supercomputing Centre 8092 Zurich Switzerland User Engagement and Support Swiss National Supercomputing Centre 6900 Lugano Switzerland Institut de Neurosciences des Systèmes Aix Marseille Univ 13005 Marseille France Simulation Lab Neuroscience Forschungszentrum Jülich Jülich Germany Department of Experimental Psychology Ghent University 9000 Ghent Belgium Donders Center for Cognitive Neuroimaging Radboud University 6525HR Nijmegen The Netherlands Department of Electrical Computer and Energy Engineering University of Colorado Boulder CO 80309 USA Department of Neurosurgery Johns Hopkins School of Medicine Baltimore MD 21287 USA Department of Neurology Johns Hopkins School of Medicine Baltimore MD 21287 USA Department of Otolaryngology Johns Hopkins School of Medicine Baltimore MD 21287 USA INSERM U968 Paris France Sorbonne Universités UPMC University Paris 06 UMR_S 968 Institut de la Vision Paris France CNRS UMR_7210 Paris France Department of Computer Architecture and Technology University of Granada (CITIC) Granada Spain Sorbonne Universités UPMC Univ Paris 06 INSERM CNRS Institut de la Vision Paris France Department of Adaptive Machine Systems Osaka University Osaka Japan Department of Computer Science University of Cergy-Pontoise Cergy-Pontoise France Department of Physics and Astronomy College of Charleston Charleston SC 29424 USA School of Physics Faculty of Science University of Sydney Sydney NSW 2006 Australia Center of Excellence for Integrative Brain Function Australian Research Council Sydney Australia Max Planck Institute for Human Cognitive and Brain Sciences Saxony Lei

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Left and right hand distinction for multi-touch tabletop interactions 14

Left and right hand distinction for multi-touch tabletop int...

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19th International Conference on Intelligent User Interfaces, IUI 2014

作者： Zhang, Zhensong Zhang, Fengjun Chen, Hui Liu, Jiasheng Wang, Hongan Dai, Guozhong 1Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Sciences China State Key Laboratory of Computer Science Institute of Software Chinese Academy of Sciences China Information Center Guodian Finance Co. Ltd. China

ISBN: (纸本)9781450321846

In multi-touch interactive systems, it is of great significance to distinguish which hand of the user is touching the surface in real time. Left-right hand distinction is essential for recognizing the multi-finger gestures and further fully exploring the potential of bimanual interaction. However, left-right hand distinction is beyond the capability of most existing multi-touch systems. In this paper, we present a new method for left and right hand distinction based on the human anatomy, work area, finger orientation and finger position. Considering the ergonomics principles of gesture designing, the body-forearm triangle model was proposed. Furthermore, a heuristic algorithm was introduced to group multi-touch contact points and then made left-right hand distinction. A dataset of 2880 images has been set up to evaluate the proposed left-right hand distinction method. The experimental results demonstrate that our method can guarantee the high recognition accuracy and real time performance in freely bimanual multi-touch interactions. © 2014 ACM.

关键词： Heuristic algorithms

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Incorporating peephole interactions into children's second language learning activities on mobile devices 14

Incorporating peephole interactions into children's second l...

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13th International Conference on interaction Design and Children, IDC 2014

作者： McNally, Brenna Guha, Mona Leigh Norooz, Leyla Rhodes, Emily Findlater, Leah Human-Computer Interaction Lab. College of Information Studies University of Maryland College Park MD 20742 United States Usability Lab. College of Arts and Sciences University of Baltimore Baltimore MD 21201 United States

ISBN: (纸本)9781450322720

Physical movement has the potential to enhance learning activities. To investigate how movement can be incorporated into children's mobile language learning, we designed and evaluated two versions of a German vocabulary game called Scenic Words. The first version used movement-based dynamic peephole navigation, which requires physical movement of the arms, while the second version used touch-based static peephole navigation, which only requires standard touchscreen interactions;static peepholes are the status quo interaction technique for navigation, commonly found, for example, in map applications and games. To compare the two types of navigation and to assess children's reactions to dynamic peepholes, we conducted an in-home study with 16 children (ages 8-9). The children participated in pairs but individually played each version of the game on a mobile device. While results showed that the more familiar static peepholes were the preferred interaction style overall, participants became accustomed to the movement-based dynamic peepholes during the study. Participants noted that the dynamic peephole interaction became easier over time, and that it had some advantages such as for dragging-and-dropping elements in the game. Copyright © 2014 ACM.

关键词： Dynamics

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P-33: A Comprehensive Evaluation of Visual Fatigue on Viewing Small Autostereoscopic Display

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SID Symposium Digest of Technical Papers 2015年第1期46卷

作者： Danli Wang Xinpan Yang Yaohua Xie Zijian Wan State Key Laboratory of Computer Institute of Software Chinese Academy of Sciences Beijing China b Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Sciences Beijing China

Stereoscopic displays are promising and have many applications in various fields because they can provide amazing visual effects. However, one of the inevitable problems is that they also cause visual fatigue after durative viewing. Recent years, many researches have been proposed on the visual fatigue during stereoscopic viewing. But there are very few researches on the visual fatigue during a continuous viewing process, especially for those combine both subjective and objective evaluation. Besides, with the development and popularization of mobile devices, it is now possible for users to experience stereoscopic effects using mobile devices anytime and anywhere. In this paper, a comprehensive evaluation method is proposed. Subjective scores, Electrocardiograph (ECG) and eye movement of all subjects were collected when they were viewing stereoscopic videos. These data were then used to analyze the change of the visual fatigue during viewing. A mobile device was adopted and a comparative experiment was designed to assess the change of the visual fatigue when viewing 2D and 3D content respectively. Eighteen subjects were employed in the experiment, and the results show that the visual fatigue is generally greater when viewing 3D contents than when viewing similar 2D contents.

关键词： Visual fatigue evaluation method autostereoscopic display

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Laser origami: Laser-cutting 3D objects

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interactions 2014年第2期21卷 36-41页

作者： Mueller, Stefanie Kruck, Bastian Baudisch, Patrick Human Computer Interaction Lab at Hasso Plattner Institute Germany IT -systems engineering at the Hasso Plattner Institute Germany Computer Science At Hasso Plattner Institute Germany

The article discusses how LaserOrigami allows users to quickly create 3D structures that do not require manual assembly. LaserOrigami bends the workpiece by distributing the heat over a larger surface. By moving the workpiece away from the laser, it defocuses the laser. This distributes the laser's heat over a larger region. In addition, LaserOrigami further distributes the laser's heat by repeatedly running the laser back and forth over the region to be bent. LaserOrigami modifies focus by moving the cutting table up and down. LaserOrigami offers two types of interfaces. The first one is a traditional CAD-style interface, which researchers created as a master shape library for Microsoft Visio. The key idea behind LaserOrigami is that it achieves three-dimensionality by bending the workpiece. LaserOrigami accomplishes this by heating selected regions of the workpiece until they turn compliant and bend under the forces of gravity.

关键词： computer aided design

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