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IIH-MSP 2009 - 2009 5th International Conference on Intelligent Information Hiding and Multimedia Signal Processing

作者： Lee, Chin-Feng Chen, Hsing-Ling Department of Information Management Chaoyang University of Technology 168 Jifong E. Rd. Wufong Township Taichung County 41349 Taiwan Graduate Institute of Informatics Doctoral Program Chaoyang University of Technology 168 Jifong E. Rd. Wufong Township Taichung County 41349 Taiwan

ISBN: (纸本)9780769537627

Since networks have progressed remarkably, there is countless information available on the World Wide Web. Generally, this information is formatted as an HTML document. Hence, this paper provides a data concealment scheme for HTML documents based on color code. Our proposed scheme not only avoids increasing the cover file size but also prevents the steganalytic techniques to detect. In addition, the extraction secret data will be meaningless without the assistance of secret key provided. © 2009 IEEE.

关键词： HTML

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Promoting and participating in online health forums: A guide to facilitation and evaluation for health professionals

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Journal of Communication in Healthcare 2010年第3期3卷 246-257页

作者： O''Grady, Laura Bender, Jackie Urowitz, Sara Wiljer, David Jadad, Alejandro R. Department of Health Policy University Health Network Toronto M5G 2C4 ON Canada Department of Management and Evaluation University Health Network Toronto M5G 2C4 ON Canada Centre for Global eHealth Innovation University Health Network Toronto M5G 2C4 ON Canada Dalla Lana School of Public Health University of Toronto Educational Informatics and Caring Voices Oncology Education Princess Margaret Hospital/University Health Network Toronto M5G 2M9 ON Canada Knowledge Management and Innovation Oncology Education/Radiation Medicine Program Princess Margaret Hospital University Health Network Toronto M5G 2M9 ON Canada Department of Anesthesia University Health Network Dalla Lana School of Public Health University Health Network University of Toronto Toronto M5G 2C4 ON Canada

The internet has been used to support and inform the lay person about health and healthcare services almost since its inception. One of the most popular elements of this is the exchange of information using electronic communications such as message boards or mailing lists. The purpose of this paper is to provide a guide for practitioners engaged in asynchronous moderating or facilitating online health communities. The paper outlines why facilitation of online support groups is important, and strategies to support these communities by promoting and maintaining participation, while outlining key characteristics of an effective facilitator. It also highlights some of the challenges involved in facilitating online environments, with emphasis on gender-related issues and 'groupthink'. Methods to evaluate these processes are also discussed. Electronic communication to support treatment decisions by patients is likely to continue to grow. As a result, so will the issues related to large groups working together. Ways to mediate and ensure equal and effective participation are an important option to support these endeavors. [ABSTRACT FROM AUTHOR]

关键词： evaluation facilitation GUIDELINES health MODERATING ONLINE

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Design of interleaved multithreading for Network Processors on Chip

Design of interleaved multithreading for Network Processors ...

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： Henrique C. Freitas Felipe L. Madruga Marco A. Z. Alves Philippe O. A. Navaux Graduate Program in Computer Science Informatics Institute Universidade Federal do Rio Grande do Sul Porto Alegre Rio Grande do Sul Brazil

ISBN: (纸本)9781424438273

Thread level parallelism and multi-core processors are current alternatives to increase performance of general-purpose applications. In the same way, networks-on-ohip (NoCs) are the main alternatives for supporting packet throughput for the next generations of many-core processors. NPoC (network processor on chip) is a proposal to increase the performance of programmable NoC routers and multi-cluster NoC architectures using interleaved multithreading (IMT) technique. Therefore, the main goal of this paper is to present the design impact of interleaved multithreading for network processors on chip focusing on area and performance feasibility. Results show that NPoC-based router has an acceptable and similar area relative to a conventional NoC, and higher performance up to 7.1% than the same NPoC version without IMT.

关键词： Multithreading Network-on-a-chip Throughput Pipelines Parallel processing Yarn Switches Hardware Costs Wire

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TREC Blog and TREC Chem: A View from the corn fields

TREC Blog and TREC Chem: A View from the corn fields

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18th Text REtrieval Conference, TREC 2009

作者： Mejova, Yelena Thuc, Viet Ha Foster, Steven Harris, Christopher Arens, Bob Srinivasan, Padmini Informatics Program University of Iowa Iowa City IA 52242 United States Department of Management Sciences University of Iowa Iowa City IA 52242 United States Department of Computer Science University of Iowa Iowa City IA 52242 United States Global News Intelligence Montpelier VT 05667 United States

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Robust cross-race gene expression analysis

Robust cross-race gene expression analysis

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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Hsun-Hsien Chang Marco F. Ramoni Division of Health Sciences and Technology Harvard and Massachusetts Institute of Technology Boston MA USA Childrens Hospital Informatics Program Harvard Medical School Boston MA USA

ISBN: (纸本)9781424423538

This paper develops a Bayesian network (BN) predictor to profile cross-race gene expression data. Cross-race studies face more data variability than single-lab studies. Our design handles this problem by using the BN framework. In addition, unlike existing methods that unrealistically assume independent genes, our BN approach can capture the dependencies among genes. Existing BN algorithms in biomedicine applications quantize data, leading to information loss; we adopt linear Gaussian model to keep the data intact, so our resulting model is more reliable. The application of our BN predictor to a lung adenocarcinoma study shows high prediction accuracy, and performance evaluation demonstrates our gene signature agreeable with those reported in the literature. Our tool has a promising potential in finding disease biomarkers common to multiple races.

关键词： Robustness Gene expression Biomarkers Bayesian methods Testing Biomedical measurements Biological system modeling Diseases Pediatrics Hospitals

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Modeling the dynamics of the recovery process in robot therapy

Modeling the dynamics of the recovery process in robot thera...

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International Workshop on Virtual Rehabilitation

作者： Maura Casadio Vladimir Novakovic Pietro G. Morasso Vittorio Sanguineti Sensorimotor Performance Program Rehabilitation Institute of Chicago Chicago USA Department Informatics Systems Telematics University of Genoa Genoa Italy Department Robotics Brain and Cognitive Science Italian Institute of Technology Genoa Italy

The mechanisms of action of physical assistance in promoting motor recovery after stroke are poorly understood. To explicitly model this process might help understanding what determines recovery, and how to make it faster and more effective. Linear dynamical models are used to describe the dynamics of sensorimotor adaptation, and could be extended to characterize the process of recovery of motor functions in impaired subjects while they move with the assistance of a therapist, or a robot. To test the feasibility of this approach, here we focus on a robot therapy experiment which involves a hitting task. Nine chronic stroke survivors underwent 8 to 10 rehabilitation sessions. We used a linear dynamical model to describe the trial-by-trial dynamics of the recovery process, with robot-generated assistance as input and subject's motor performance as output. In all subjects, the model correctly reproduced the overall evolution of performance over sessions. A comparison of the estimated model parameters with the clinical scales (Fugl-Meyer arm portion and Ashworth) and their modifications indicated that the time constant of the recovery process is predictive of the retention of the recovery (assessed after three months from completion of the protocol). Moreover, we found that in subjects with little or no spasticity, recovery is mediated by motor error. In contrast, in subjects with high spasticity, recovery is more influenced by performance. Although preliminary, these results suggest that modeling the recovery process with dynamical models is feasible, and could serve as basis to devise dasiaoptimalpsila strategies for regulating assistance with the aim of maximizing recovery.

关键词： Medical treatment Robot sensing systems Rehabilitation robotics Cognitive robotics Humans Force control Robot control Protocols Control systems Error correction

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The emergence of a catastrophe:an analysis of the 2006 Brazil mid-air collision

The emergence of a catastrophe:an analysis of the 2006 Brazi...

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第十七届国际工效学大会暨中国人类工效学会成立20周年庆祝大会

作者： Paulo Victor Rodrigues de Carvalho Jose Orlando Gomes Mario Cesar Vidal Nuclear Engineering Institute National Nuclear Energy Commission Post-Graduate Program in Informatics-NCE&IMC Federal University of Rio de Janeiro Environmental Engineering Program Federal University of Rio de Janeiro Luis Alberto Coimbra Research Institute COPPEFederal University of Rio de Janeiro

We use a systemic framework to investigate the en route mid-air collision that occurred in the clear afternoon Amazon sky in which 154 people lost their lives to understand how and why this tragedy *** our research method we search for the mid-air collision antecedents traced through the concurrence of performances of the several actors(pilots and controllers) and their interaction with the contextual conditions of the several ATM *** and evidences,antecedents and consequences from this mid-air collision come from a wide range of public available *** sources include official government documents,congressional hearings,including controllers',pilots',and air traffic management authorities'testimonies,video tapes,audio tapes of many media centers,press releases,newspaper clippings,flight plans,regulations,maps,directives and so *** findings emphasize that small and normal variations in the system behavior embedded in the equipment,people and organizational daily functioning jeopardize the active problem-solving behavior needed in an air traffic control management system,highlighting how the day-to-day functioning of the system can make monitoring and awareness difficult,and shape the cognitive strategies and decisions trade offs that operators have developed to deal with overall system behavior.

关键词： Amazon The emergence of a catastrophe:an analysis of the 2006 Brazil mid-air collision

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Molecular Evolution of Cystine-Stabilized Miniproteins as Stable Proteinaceous Binders

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Structure 2009年第4期17卷 620-631页

作者： Chang, Hung-Ju Hsu, Hung-Ju Chang, Chi-Fon Peng, Hung-Pin Sun, Yi-Kun Yu, Hui-Ming Shih, Hsi-Chang Song, Chun-Ying Lin, Yi-Ting Chen, Chu-Chun Wang, Chia-Hung Yang, An-Suei Genomics Research Center Academia Sinica Taipei 115 Taiwan Taiwan International Graduate Program Academia Sinica Taipei 115 Taiwan Institute of Biochemical Science National Taiwan University Taipei 106 Taiwan Graduate Institute of Life Sciences National Defence Medical Center Taipei 114 Taiwan Institute of BioMedical Informatics National Yang-Ming University Taipei 112 Taiwan Institute of Biochemistry and Molecular Biology National Yang-Ming University Taipei 112 Taiwan

Small cystine-stabilized proteins are desirable scaffolds for therapeutics and diagnostics. Specific folding and binding properties of the proteinaceous binders can be engineered with combinatorial protein libraries in connection with artificial molecular evolution. The combinatorial protein libraries are composed of scaffold variants with random sequence variation, which inevitably produces a portion of the library sequences incompatible with the parent structure. Here, we used artificial molecular evolution to elucidate structure-determining residues in a smallest cystine-stabilized scaffold. The structural determinant information was then applied to designing cystine-stabilized miniproteins binding to human vascular endothelial growth factor. This work demonstrated a general methodology on engineering artificial cystine-stabilized proteins as antibody mimetics with simultaneously enhanced folding and binding properties. © 2009 Elsevier Ltd. All rights reserved.

关键词： PROTEINS

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A Gigabit UDP/IP network stack in FPGA

A Gigabit UDP/IP network stack in FPGA

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IEEE International Conference on Electronics, Circuits and Systems (ICECS)

作者： Fernando Luis Herrmann Guilherme Perin Josue Paulo Jose de Freitas Rafael Bertagnolli Joao Baptista dos Santos Martins Post-Graduate Program in Informatics (PPGI) Federal University of Santa Maria (UFSM) - Microelectronics Group (Gmicro) Santa Maria Rio Grande do Sul Brazil Universidade Federal de Santa Maria Santa Maria RS BR

ISBN: (纸本)9781424450909;9781424450916

This paper presents a proposal of a Gigabit UDP/IP network stack in FPGA, which is the stack of the widely used in VoIP and Video-conference applications. This network node implements the Network, Transport and Link Layer of a traditional stack. This architecture is integrated and developed using Xilinx ISE tool and synthesized to a Spartan-3E FPGA. We show architecture details, timing and area results of a practical prototyping. Also, we compare our prototype and results with other works in terms of area (Xilinx slices), speed (MHz), maximum Ethernet frame length (bytes) and maximum Ethernet speed (Mbps). Comparing to these works our architecture obtained a intermediate solution in area and is the best implementation in terms of speed (MHz).

关键词： IP networks Field programmable gate arrays Protocols Ethernet networks Open systems TCPIP Computer networks Payloads Hardware Prototypes

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Resilience and situation awareness in operators' activities during shift changeovers in nuclear power plants

Resilience and situation awareness in operators' activities ...

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第十七届国际工效学大会暨中国人类工效学会成立20周年庆祝大会

作者： Tahar Hakim Benchekroum Paulo Victor Rodrigues de Carvalho Jose Orlando Gomes Conservatoire National des Arts et Métiers-CNAN Comiss o Nacional de Energia Nuclear-Instituto de Engenharia Nuclear Rio de Janeiro Graduate Program in Informatics-NCE&IM Cidade Universitária

Shift work situations occur in almost all safety critical organizations,such as nuclear power plants,petrochemical industries,and air traffic control systems,and the mechanisms that crew members use during changeovers to actualize and validate situation awareness are part of unstructured activities of the *** of some catastrophes like Chernobyl,Exxon Valdez,and,in Brazil,the recent Gol/Legacy mid-air collision indicated that inadequate communications during shift changeovers difficult operators’work in the moments that preceded these accidents,because they got inadequate information about the current ***,they also have difficult to understand what is really happening in the *** use field studies to investigate how information exchanges activities(verbal,written,and nonverbal) enable operator crews to share information regarding the events that occurred in the previous *** findings indicated that resilience of nuclear power plant operation depends on how operators actualize and validate shared situation awareness,and the activities that operators perform to achieve an adequate awareness cannot be considered as embedded or as being a natural complement of the process supervision/control activities.

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