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International Conference on computer Supported Cooperative Work in Design

作者： Nelson Baloian Gustavo Zurita Flávia Maria Santoro Renata Mendes Araujo Sean Wolfgan Doulgas Machado José A. Pino Department of Computer Science Universidad de Chile Santiago Chile Management Control and Information Systems Department Business School Universidad de Chile Santiago Chile Graduate Program in Information Systems-Research and Practice Group in Technology (NP2Tec) Federal University of Rio de Janeiro Rio de Janeiro Brazil

Collaborative techniques for business process design are generally supported by groupware tools that allow process actors to interact collecting their knowledge about the activities performed. Despite success reports, challenges are still observed due to the complexity of this task. We propose to gather benefits of interviews, collaboration and visual methods in eliciting business processes in order to deal with problems identified in literature. We present an approach based on a collaborative mobile application which analysts should use while interviewing process stakeholders. The information is collected through a simple BPMN diagram through which they exchange information and build parts of the models.

关键词： Business Collaboration Interviews Logic gates Mobile handsets Visualization Mobile communication

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The inference of stickiness to trust repair in virtual community

The inference of stickiness to trust repair in virtual commu...

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2011 International Conference on Financial Management and Economics（ICFME 2011）

作者： Jyh-Jeng Wu Shu-Hua Chien Ying-Hueih Chen Wan-Ru Lin Department of Business Management National United UniversityTaiwan Department of Insurance and Finance National Taichung Institute of TechnologyTaiwan Department of Computer Science and Information Management Providence UniversityTaiwan Master Program in Business Administration National United UniversityTaiwan1

In this research we investigate that user's stickiness of virtual community would affect the trust and the stickiness is mediator between trust repair and *** questionnaire through"Happy Farm"from the Facebook,we used the Structural equation modeling(SEM) to analyze the data,in order to understand repair methods and the community trust the persons concerned after the stickiness of the impact of *** result shows that functional and informational of trust repair has positive relationship with stickiness.

关键词： trust repair,trust,stickiness,virtual community

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3-3 Multimedia information hiding

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Journal of the National Institute of information and Communications technology 2011年第1-2期58卷 183-194页

作者： Takizawa, Osamu Sonoda, Kotaro Yoshioka, Katsunari Suzuki, Jouji Disaster Management and Mitigation Group Japan Security Fundamentals Group Information Security Research Center Japan Computer and Information Science Program Faculty of Engineering Nagasaki University Japan Disaster Management and Mitigation Group Information Security Research Center Japan Interdisciplinary Research Center Yokohama National University Japan Network Security Incident Response Group Information Security Research Center Japan Technology Transfer Promotion Office Outcome Promotion Department Japan Graduate School Research Institute of Environment and Information Sciences Yokohama National University Japan

We research the multimedia information hiding (MIH) which is a technology to overlay digital information on multimedia contents such as picture, sound, document, etc. As application to disaster management of MIH, we have developed a new technology called "PAIH" (Public Address information Hiding) which is a technology to overlay information such as position or destination on siren sound of urgent vehicles. Siren sound is allowed to degrade of sound quality, but PAIH is required to decode correct information from siren sound with pitch shift (Doppler effect) or under noisy environment.

关键词： Disasters

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Noise-based information processing

Noise-based information processing

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International Conference on Noise and Fluctuations (ICNF)

作者： Laszlo B. Kish Sunil P. Khatri Sergey M. Bezrukov Ferdinand Peper Zoltan Gingl Tamas Horvath Department of Electrical and Computer Engineering Texas A and M University USA Laboratory of Physical and Structural Biology Program in Physical Biology NICHD National Institutes of Health DHHS Bethesda MD USA National Institute of Information and Communications Technology Kobe Japan Department of Experimental Physics University of Szeged Szeged Hungary Department of Computer Science University of Bonn Germany Schloss Birlinghoven Fraunhofer IAIS Sankt Augustin Germany

We briefly introduce noise-based logic. After describing the main motivations we outline classical, instantaneous (squeezed and non-squeezed), continuum, spike and random-telegraph-signal based schemes with applicatio... 详细信息

关键词： Logic gates Noise Power dissipation Multivalued logic Neurons Hardware computers

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BioVLAB-MMIA: A Reconfigurable Cloud Computing Environment for microRNA and mRNA Integrated Analysis

BioVLAB-MMIA: A Reconfigurable Cloud Computing Environment f...

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IEEE International Conference on Bioinformatics and Biomedicine (BIBM)

作者： Hyungro Lee Youngik Yang Heejoon Chae Seungyoon Nam Donghoon Choi Patanachai Tangchaisin Chathura Herath Suresh Marru Kenneth P. Nephew Sun Kim School of Informatics and Computing Indiana University Bloomington IN USA J Craig Venter Institute San Diego CA USA National Cancer Center Goyang South Korea Supercomputing Center Korea Institute of Science and Technology Information South Korea Medical Sciences Program Indiana University School of Medicine Indiana University Bloomington IN USA School of Computer Science and Engineering Seoul National University Seoul South Korea

MicroRNAs, by regulating the expression of hundreds of target genes, play critical roles in developmental biology and the etiology of numerous diseases, including cancer. As vast amounts of microRNA expression profile data are now publicly available, the integration of those data sets with gene expression profiles represents an extremely active area of life science research. However, the ability to conduct genome wide microRNA-mRNA (gene) integration currently requires sophisticated, high-end informatics tools, significant expertise in bioinformatics and computer science to carry out the complex integration analysis. In addition, increased computing infrastructure capabilities are essential in order to accommodate large data sets. In this study, we have extending BioVLAB cloud workbench to develop an environment for the integrated analysis of microRNA and mRNA expression data, named BioVLAB-MMIA. The workbench facilitates computations on the Amazon EC2 and S3 resources orchestrated by XBaya Workflow Suite. The advantages of BioVLAB-MMIA over the web-based MMIA system include: 1) readily expanded as new computational tools become available; 2) easily modifiable by re-configuring graphic icons in the workflow; 3) on-demand cloud computing resources can be used on an as needed basis; 4) distributed orchestration supports complex and long running workflows asynchronously.

关键词： Bioinformatics Cloud computing Cancer Genomics Educational institutions Diseases computer architecture

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High embedding reversible data hiding scheme for JPEG

High embedding reversible data hiding scheme for JPEG

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6th International Conference on Intelligent information Hiding and Multimedia Signal Processing, IIHMSP 2010

作者： Kuo, Wen-Chung Kuo, Shao-Hung Wuu, Lih-Chyau Depart. of Computer Science and Information Engineering National Formusa University Yunlin 632 Taiwan Graduate School of Engineering Science Technology Doctoral Program National YunLin University of Science and Technology Yunlin 640 Taiwan

ISBN: (纸本)9780769542225

Both Data hiding and data compression are very important technologies in the field of image processing. It seems that there is no relationship between data hiding and data compression because most of the data hiding mechanisms focus on information security and the data compression mechanisms emphasize the compression ratio. In fact, they are closely related. Until now, there are many literatures to discuss the secret data how to be embedded into the media image. Unfortunately, the stego-image's size will be increased when the media image is hidden a lot of secret data. In order to overcome this disadvantage, a reversible data hiding scheme based on EMD data hiding and JPEG compression technology will be proposed in this paper. According to the experimental results, we can prove that our proposed scheme still keeps high embedding capacity, security and good compression ratio. © 2010 IEEE.

关键词： Steganography

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Mining email transaction logs to locate significant messages and users

Mining email transaction logs to locate significant messages...

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作者： Esichaikul, Vatcharaporn Guha, Sumanta Niyamosatha, Thanittha Computer Science and Information Management Program Asian Institute of Technology P.O. Box 4 Klong Luang Pathumthani 12120 Thailand

ISBN: (纸本)9788988678312

A simple and intuitive model to mine an email transactions log for significant messages and users is presented. No use is made of NLP or semantic analysis. The model is based only on scoring messages and users from a graphtheoretic analysis of the communication pattern represented in the transaction log. Practical experiments indicate the potential of the model.

关键词： Data mining

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Dynamic load balancing of short videos in heterogeneous storage environment

Dynamic load balancing of short videos in heterogeneous stor...

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作者： Jaiphakdee, W. Srinilta, C. Computer Engineering Program Faculty of Engineering King Mongkut's Institute of Technology Ladkrabang Bangkok Thailand School of Computer Engineering and Information Science Faculty of Engineering King Mongkut's Institute of Technology Ladkrabang Bangkok Thailand

ISBN: (纸本)9789881701282

Performance of storage system has great impact on overall performance of I/O intensive systems. Data distribution across storage devices affects storage performance directly. Data migration can degrade system performance. This paper focuses on data placement issue in heterogeneous tiers of storage devices storing YouTube videos. In addition to storage capability and current workload, our data placement algorithm also takes into account future workload. Future workload is estimated from video's characteristics. Workload in all storage tiers is dynamically adjusted to achieve balance at all times. Four data placement algorithms were used to distribute 16,314 videos across 3-tier storage system in the experiment. The proposed algorithm resulted in a more balance workload distribution compared to round robin and random algorithms.

关键词： Virtual storage

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Partial response maximum likelihood sequence detector for a nonlinear magnetic recording channel

Partial response maximum likelihood sequence detector for a ...

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2010 International Conference on System science and Engineering, ICSSE 2010

作者： Kao, Tsai-Sheng Chen, Chiu-Hsiung Chen, Sheng-Chih Hou, Sheng-Yun Chang, Yuan-Chang Chou, Xsing-Bang Department of Electronic Engineering Hwa-Hsia Institute of Technology Taipei Taiwan Department of Computer Science and Information Engineering China University of Technology Hsinchu Taiwan Graduate Program of Digital Contens and Technologies ChengChi University Taipei Taiwan

ISBN: (纸本)9781424464746

The nonlinear effects of partial erasure and transition shift, however, often limit the performance attained by the partial response maximum likelihood (PRML) detector because of model mismatch. Conventionally, the nonlinear effects are either ignored or approximated by linearization technique. In the article, a PRML detector for the PR4 model including the nonlinear effects has been developed to improve the detector performance. The new representation is more accurate and the corresponding PRML detector has better performance without increasing the realization complexity. computer simulation results show that the new representation outperforms the conventional ones due to the enhanced modeling capability. The method is also expected to be applied in the high order partial response channel. © 2010 IEEE.

关键词： Magnetic recording

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Correlation functions for storage data and nonreturn-to-zero-inverted modulated data of a high-density magnetic recording channel with partial erasure effect

Correlation functions for storage data and nonreturn-to-zero...

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2010 International Conference on computer Modeling and Simulation, ICCMS 2010

作者： Kao, Tsai-Sheng Chen, Chiu-Hsiung Chen, Sheng-Chih Chang, Yuan-Chang Wang, Shun-Te Department of Electronic Engineering Hwa-Hsia Institute of Technology Taipei Taiwan Department of Computer Science and Information Engineering China University of Technology Hsinchu Taiwan Graduate Program of Digital Contens and Technologies ChengChi University Taipei Taiwan

ISBN: (纸本)9780769539416

As magnetic recording densities grow, the nonlinear distortions, known as transition shift and partial erasure, arise and limit the performance of the detector. Despite that the transition shift can be compensated by a write current technique, the effect of partial erasure complicates the evaluation of the correlation functions for the storage data and the nonreturn-to-zero- inverted modulated data. In this article, we observe the dependence between the partial erasure effect and storage data, and derive the correlation functions for storage data and nonreturn-to-zero-inverted modulated data in a high density magnetic recording channel. The closed-form of the correlation functions are obtained, these results are applied to verify the timing function of the Muller & Mueller's phase detector in a partial response class IV channel via computer simulations. © 2010 IEEE.

关键词： Signal detection

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