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作者： Metsis, Vangelis Kosmopoulos, Dimitrios Athitsos, Vassilis Makedon, Fillia Heracleia Human-Centered Computing Lab Department of Computer Science and Engineering University of Texas at Arlington Arlington TX United States Department of Computer Science and Engineering University of Texas at Arlington Arlington TX United States

The monitoring of sleep patterns is of major importance for various reasons such as the detection and treatment of sleep disorders, the assessment of the effect of different medical conditions or medications on the sleep quality, and the assessment of mortality risks associated with sleeping patterns in adults and children. Sleep monitoring by itself is a difficult problem due to both privacy and technical considerations. The proposed system uses a combination of non-invasive sensors to assess and report sleep patterns: a contact-based pressure mattress and a non-contact 3D image acquisition device, which can complement each other. To evaluate our system, we used real data collected in Heracleia lab's assistive living apartment. Our system uses Machine Learning techniques to automatically analyze the collected data and recognize sleep patterns. It is non-invasive, as it does not disrupt the user's usual sleeping behavior and it can be used both at the clinic and at home with minimal cost. © 2012 Springer-Verlag London.

关键词： Learning systems

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Propagation of errors in citation networks: a study involving the entire citation network of a widely cited paper published in, and later retracted from, the journal Nature

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Research integrity and peer review 2016年第1期1卷 3页

作者： Paul E van der Vet Harm Nijveen 1Human Media Interaction Group Department of Computer Science University of Twente Drienerlolaan 5 Enschede 7522 NB the Netherlands. 2ZGT Academy Ziekenhuisgroep Twente Zilvermeeuw 1 Almelo 7609 PP the Netherlands. 3Bioinformatics Laboratory Wageningen University Droevendaalsesteeg 1 Wageningen 6708 PB the Netherlands. 4Wageningen Seed Lab Laboratory of Plant Physiology Wageningen University Droevendaalsesteeg 1 Wageningen 6708 PB the Netherlands.

BACKGROUND:In about one in 10,000 cases, a published article is retracted. This very often means that the results it reports are flawed. Several authors have voiced concerns about the presence of retracted research in the memory of science. In particular, a retracted result is propagated by citing it. In the published literature, many instances are given of retracted articles that are cited both before and after their retraction. Even worse is the possibility that these articles in turn are cited in such a way that the retracted result is propagated further. METHODS:We have conducted a case study to find out how a retracted article is cited and whether retracted results are propagated through indirect citations. We have constructed the entire citation network for this case. RESULTS:We show that directly citing articles is an important source of propagation of retracted research results. In contrast, in our case study, indirect citations do not contribute to the propagation of the retracted result. CONCLUSIONS:While admitting the limitations of a study involving a single case, we think there are reasons for the non-contribution of indirect citations that hold beyond our case study.

关键词： Citation network Citing behaviour Retraction

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CTArcade: Computational thinking with games in school age children

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International Journal of Child-computer interaction 2014年第1期2卷 26-33页

作者： Lee, Tak Yeon Mauriello, Matthew Louis Ahn, June Bederson, Benjamin B. Human-Computer Interaction Lab University of Maryland College Park 20742 MD United States Computer Science Department University of Maryland College Park 20742 MD United States ISchool University of Maryland College Park 20742 MD United States College of Education University of Maryland College Park 20742 MD United States

We believe that children as young as ten can directly benefit from opportunities to engage in computational thinking. One approach to provide these opportunities is to focus on social game play. Understanding game play is common across a range of media and ages. Children can begin by solving puzzles on paper, continue on game boards, and ultimately complete their solutions on computers. Through this process, learners can be guided through increasingly complex algorithmic thinking activities that are built from their tacit knowledge and excitement about game play. This paper describes our approach to teaching computational thinking skills without traditional programming-but instead by building on children's existing game playing interest and skills. We built a system called CTArcade, with an initial game (Tic-Tac-Toe), which we evaluated with 18 children aged 10-15. The study shows that our particular approach helped young children to better articulate algorithmic thinking patterns, which were tacitly present when they played naturally on paper, but not explicitly apparent to them until they used the CTArcade interface. © 2014 Elsevier B.V..

关键词： Computational thinking Design Games human factors Learning

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Erratum: Genomic landscape of high-grade meningiomas

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NPJ genomic medicine 2017年第1期2卷 26页

作者： Wenya Linda Bi Noah F Greenwald Malak Abedalthagafi Jeremiah Wala Will J Gibson Pankaj K Agarwalla Peleg Horowitz Steven E Schumacher Ekaterina Esaulova Yu Mei Aaron Chevalier Matthew A Ducar Aaron R Thorner Paul van Hummelen Anat O Stemmer-Rachamimov Maksym Artyomov Ossama Al-Mefty Gavin P Dunn Sandro Santagata Ian F Dunn Rameen Beroukhim Center for Skull Base and Pituitary Surgery Department of Neurosurgery Brigham and Women's Hospital Harvard Medical School Boston MA USA. Department of Cancer Biology Dana-Farber Cancer Institute Boston MA USA. Broad Institute of MIT and Harvard Cambridge MA USA. Division of Neuropathology Department of Pathology Brigham and Women's Hospital Boston MA USA. Research Center King Fahad Medical City Riyadh Saudi Arabia. The Saudi Human Genome Project Lab King Abdulaziz City for Science and Technology Riyadh Saudi Arabia. Department of Neurosurgery Massachusetts General Hospital Boston MA USA. Department of Surgery The University of Chicago Chicago IL USA. Department of Pathology and Immunology Washington University School of Medicine St. Louis MO USA. Computer Technologies Department ITMO University Saint Petersburg Russia. Center for Cancer Genome Discovery Dana-Farber Cancer Institute Boston MA USA. Department of Pathology Massachusetts General Hospital Boston MA USA. Department of Neurosurgery Washington University School of Medicine St. Louis MO USA. Center for Human Immunology and Immunotherapy Programs Washington University School of Medicine St. Louis MO USA. Department of Medical Oncology Dana-Farber Cancer Institute Boston MA USA.

[This corrects the article DOI: 10.1038/s41525-017-0014-7.].

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Fetal Abdominal Standard Plane Localization Through Representation Learning with Knowledge Transfer

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2014年 8679卷 125-132页

作者： Chen, Hao Ni, Dong Yang, Xin Li, Shengli Heng, Pheng Ann Department of Computer Science and Engineering The Chinese University of Hong Kong Hong Kong SAR Hong Kong National-Regional Key Technology Engineering Laboratory for Medical Ultrasound School of Medicine Shenzhen University China Department of Ultrasound Affiliated Shenzhen Maternal and Child Healthcare Hospital of Nanfang Medical University China Human Computer Interaction Research Center Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences China

Acquisition of the fetal abdominal standard plane (FASP) is crucial for prenatal ultrasound diagnosis. However, it requires a thorough knowledge of human anatomy and substantial experience. In this paper, we propose an automatic method to localize the FASP from US images. Unlike the previous methods that consider simple low-level features such as Haar features, we exploited the deep convolutional neural network to automatically learn the latent representation. In addition, we adopted the novel knowledge transfer method to enhance the learning performance by making use of the knowledge obtained in other domain. Experimental results on 219 fetal abdomen videos showed that the classification accuracy of our method was above 90%, outperforming other methods by a significant margin. © Springer International Publishing Switzerland 2014.

关键词： Diagnosis

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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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SubRosa: Supporting a proper learning atmosphere through subtle cues with immediate feedback

SubRosa: Supporting a proper learning atmosphere through sub...

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9th International Conference on Persuasive Technology, PERSUASIVE 2014

作者： Woźniak, Pawel Koczorowicz, Bartosz Fjeld, Morten Romanowski, Andrzej t2i Interaction Lab. Department of Applied IT Chalmers University of Technology Gothenburg Sweden Institute of Applied Computer Science Lodz University of Technology Lodz Poland

ISBN: (纸本)9783319071268

SubRosa is a persuasive ambient display system designed to reduce sound levels in areas used for quiet study. We have constructed a high-fidelity prototype that visualises ambient noise levels, in this case as a rotting tomato. SubRosa is different from similar systems in that it uses immediate feedback and targets a dynamic user group with a high member turnover. An experience study we conducted in two different locations showed positive influence on ambient noise conditions. Based on the study results, we discuss insights into the design of persuasive ambient displays, the effectiveness of our approach, and types of ambient feedback that could be used in similar systems. By comparing the experience study results, we show how immediate feedback for ambient displays is suitable for environments with dynamic user groups. © 2014 Springer International Publishing.

关键词： Ubiquitous computing

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Assessing real-time cognitive load based on psycho-physiological measures for younger and older adults

Assessing real-time cognitive load based on psycho-physiolog...

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IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB)

作者： Eija Ferreira Denzil Ferreira SeungJun Kim Pekka Siirtola Juha Röning Jodi F. Forlizzi Anind K. Dey Department of Computer Science and Engineering University of Oulu Finland Human-Computer Interaction Institute Carnegie Mellon University USA

We are increasingly in situations of divided attention, subject to interruptions, and having to deal with an abundance of information. Our cognitive load changes in these situations of divided attention, task interruption or multitasking; this is particularly true for older adults. To help mediate our finite attention resources in performing cognitive tasks, we have to be able to measure the real-time changes in the cognitive load of individuals. This paper investigates how to assess real-time cognitive load based on psycho-physiological measurements. We use two different cognitive tasks that test perceptual speed and visio-spatial cognitive processing capabilities, and build accurate models that differentiate an individual's cognitive load (low and high) for both young and older adults. Our models perform well in assessing load every second with two different time windows: 10 seconds and 60 seconds, although less accurately for older participants. Our results show that it is possible to build a real-time assessment method for cognitive load. Based on these results, we discuss how to integrate such models into deployable systems that mediate attention effectively.

关键词： Electroencephalography Atmospheric measurements Particle measurements Electrocardiography Real-time systems Load modeling Physiology

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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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Kitchen kinesics: Situating gestural interaction within the social contexts of family cooking 14

Kitchen kinesics: Situating gestural interaction within the ...

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26th Australian computer-human interaction Conference, OzCHI 2014

作者： Nansen, Bjorn Davis, Hilary Vetere, Frank Skov, Mikael Paay, Jeni Kjeldskov, Jesper Interaction Design Lab Microsoft Centre for Social NUI Dept of Computing and Information Systems University of Melbourne Aalborg Australia Research Centre for Socio-Interactive Design Department of Computer Science Aalborg Denmark

ISBN: (纸本)9781450306539

HCI research and practice have moved into the kitchen, and alongside screen-based technologies, a number of tangible interaction designs are emerging to support home cooking. However, we note that the designs of tangible technologies for kitchens have, to date, emphasized the work of cooking rather than the social significance or context in which it occurs. Building on this growing interest in cooking and the kitchen, we report on ethnographic research with intergenerational family members cooking together in their homes. We analyze the social, material and embodied contexts of kitchen kinesics - the non-verbal gestural communication observed in family cooking interactions. Based upon these social, embodied, and material contexts of gestural interaction in the kitchen, we identify a number of contextual concerns for approaching the design and understanding of the role of gesture in familial cooking. Ultimately we highlight the significance of collocated gestural interaction and gestured interaction over a distance to understand the opportunities and limitations afforded by the design of new technologies in the kitchen. Copyright 2014 ACM.

关键词： Kitchens

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