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International Journal of Interactive Mobile Technologies 2012年第1期6卷 25-32页

作者： Setyono, A. Alam, M.J. Eswaran, C. Faculty of Information technology Multimedia University Cyberjaya Malaysia Faculty of Computer Science Dian Nuswantoro University Semarang Indonesia Faculty of Information Technology Center for Multimedia Computing Multimedia University Cyberjaya Malaysia Department of electrical engineering Indian Institute of Technology Madras India

Limitation of message size of the MMS technology is one of the important factors which make this technology less attractive. This limitation restricts the system developers in developing new mobile applications using MMS technology. This research attempts to improve the capacity of the maximum message size by implementing compression, splitting and cropping techniques for MMS application on the mobile phone devices. This paper presents the architecture to enhance the multimedia capabilities of the MMS technology and also the implementation details for developing client-server system applications. The modified MMS technology can be used to develop practical client-server applications. © 2012, International Federation of Engineering Education Societies (IFEES). All rights reserved.

关键词： Cost effectiveness

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Efficient Collusion-Resisting Secure Sum Protocol

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电子学报(英文版) 2011年第3期20卷 407-413页

作者： ZHU Youwen HUANG Liusheng YANG Wei YUAN Xing National High Performance Computing Center at Hefei Department of Computer Science and Technology University of Science and Technology of China Hefei China Suzhou Institute for Advanced Study University of Science and Technology of China Suzhou China

Secure sum protocol is a significant secure multiparty computation protocol and it has various applications in privacy-preserving distributed multiparty computation. However, most existing secure sum protocols rarely considered how to resist underlying collusion which is a significant practical problem. Urabe et al. proposed a collusion-resistant secure sum protocol, but too much cost of communication and computation results in its low performance efficiency. In this paper, we propose security definitions to measure secure multiparty computation protocol's capability of resisting potential collusion. Then, we precisely analyze several previous secure sum protocols' capability of resisting collusion. In addition, considering realistic requirement to resist collusion and performance efficiency needs, we present a novel collusion-resisting secure sum protocol. Theoretical analysis and experimental results confirm that our secure sum protocol is efficient and has strong capability of resisting potential collusion such that it is much superior to previous ones. The communication overheads and computation complexity of our scheme both are linearity of the number of participants. Besides, our protocol's capability of resisting collusion is adjustable according to different security needs.

关键词：安全多方计算协议抗合谋隐私保护安全总结安全协议计算结果通信开销安全需求

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Handwritten and Machine Printed Text Separation in Document Images Using the Bag of visual Words Paradigm

Handwritten and Machine Printed Text Separation in Document ...

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International Workshop on Frontiers in Handwriting Recognition

作者： Konstantinos Zagoris Ioannis Pratikakis Apostolos Antonacopoulos Basilis Gatos Nikos Papamarkos Pattern Recognition and Image Analysis (PRImA) Research Laboratory School of Computing Science and Engineering University of Salford Greater Manchester UK Department of Electrical and Computer Engineering Democritus University of Thrace Xanthi Greece Institute of Informatics and Telecommunications National Center for Scientific Research Demokritos Athens Greece

In a number of types of documents, ranging from forms to archive documents and books with annotations, machine printed and handwritten text may be present in the same document image, giving rise to significant issues within a digitisation and recognition pipeline. It is therefore necessary to separate the two types of text before applying different recognition methodologies to each. In this paper, a new approach is proposed which strives towards identifying and separating handwritten from machine printed text using the Bag of visual Words paradigm (BoVW). Initially, blocks of interest are detected in the document image. For each block, a descriptor is calculated based on the BoVW. The final characterization of the blocks as Handwritten, Machine Printed or Noise is made by a Support Vector Machine classifier. The promising performance of the proposed approach is shown by using a consistent evaluation methodology which couples meaningful measures along with a new dataset.

关键词： visualization Noise Image segmentation Hidden Markov models Gabor filters Handwriting recognition Text recognition

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Partial product generation utilizing the sum of operands for reduced area parallel multipliers

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IPSJ Transactions on System LSI Design Methodology 2011年 4卷 131-139页

作者： Kawashima, Hirotaka Takagi, Naofumi Center for Embedded Computing Systems School of Information Science Nagoya University Japan Department of Communications and Computer Engineering School of Informatics Kyoto University Japan

We propose a novel method to generate partial products for reduced area parallel multipliers. Our method reduces the total number of partial product bits of parallel multiplication by about half. We call partial products generated by our method Compound Partial Products (CPPs). Each CPP has four candidate values: zero, a part of the multiplicand, a part of the multiplier and a part of the sum of the operands. Our method selects one from the four candidates according to a pair of a multiplicand bit and a multiplier bit. Multipliers employing the CPPs are approximately 30% smaller than array multipliers without radix-4 Booth's method, and approximately up to 10% smaller than array multipliers with radix-4 Booth's method. We also propose an acceleration method of the multipliers using CPPs. © 2011 Information Processing Society of Japan.

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Yield enhancement for 3D-stacked ICs: Recent advances and challenges

Yield enhancement for 3D-stacked ICs: Recent advances and ch...

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Asia and South Pacific Design Automation Conference

作者： Qiang Xu Li Jiang Huiyun Li Bill Eklow CUhk REliable Computing Laboratory (CURE) Department of Computer Science & Engineering Chinese University of Hong Kong Hong Kong China Automotive Electronics Research Center Shenzhen Institutes of Advanced Technologies Chinese Academy of Sciences China Cisco Systems Inc. San Jose CA USA

Three-dimensional (3D) integrated circuits (ICs) that stack multiple dies vertically using through-silicon vias (TSVs) have gained wide interests of the semiconductor industry. The shift towards volume production of 3D-stacked ICs, however, requires their manufacturing yield to be commercially viable. Various techniques have been presented in the literature to address this important problem, including pre-bond testing techniques to tackle the “known good die” problem, TSV redundancy designs to provide defect-tolerance, and wafter/die matching solutions to improve the overall stack yield. In this paper, we survey recent advances in this filed and point out challenges to be resolved in the future.

关键词： Through-silicon vias Three dimensional displays Testing Bonding Redundancy Semiconductor device modeling Maintenance engineering

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Identification of Surface and Deep Layer Muscles Activity by Surface EMG

Identification of Surface and Deep Layer Muscles Activity by...

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SICE Annual Conference

作者： Toshiki Koshio Shigeru Sakurazawa Masashi Toda Junichi Akita Kazuaki Kondo Yuichi Nakamura Department of System Information Science Future University Hakodate Department of Electrical & Computer Engineering Kanazawa University Academic Center for Computing and Media Studies Kyoto University

ISBN: (纸本)9784907764401

In the surface EMG measurement, since signals generated from surface layer muscles are interfered with signals from deep layer muscles, it is difficult to identify each EMG. In this study, we aimed to identify surface layer and deep layer muscle activity by surface electrode. We focused on the intersection of the two muscles of surface layer and deep layer whose fibers run at right-angle each other. In such place, we placed electrodes along each muscle fiber. We observed the difference of each signals measured from each electrode sets for two kinds of body movements in which each muscle acts independently. At that time, it was confirmed that only the EMG signal along each muscle was detected when the muscle acted independently. Therefore, we thought that it can be identified surface or deep layer muscle activity by the difference of propagation directions of EMG signal along muscle fiber. Accordingly, we tried to identify the propagation direction of EMG using an electrode array. From this result, we found that the propagation direction can be visible by the electrode array. It is thought that we can identify muscle activity of deep layer muscle from the mixed signal from both of surface layer and deep layer by this method.

关键词： Surface EMG Surface layer Deep layer Electrode array Propagation direction of EMG

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visualizing translation variation: Shakespeare's Othello

Visualizing translation variation: Shakespeare's Othello

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7th International Symposium on visual computing, ISVC 2011

作者： Geng, Zhao Laramee, Robert S. Cheesman, Tom Ehrmann, Alison Berry, David M. Visual Computing Group Computer Science Department Swansea University United Kingdom College of Arts and Humanities Swansea University United Kingdom

ISBN: (纸本)9783642240270

Recognized as great works of world literature, Shakespeare's poems and plays have been translated into dozens of languages for over 300 years. Also, there are many re-translations into the same language, for example, there are more than 60 translations of Othello into German. Every translation is a different interpretation of the play. These large quantities of translations reflect changing culture and express individual thought by the authors. They demonstrate wide connections between different world regions today, and reveal a retrospective view of their cultural, intercultural, and linguistic histories. Researchers from Arts and Humanities at Swansea University are collecting a large number of translations of William Shakespeare's Othello. In this paper, we have developed an interactive visualization system to present, analyze and explore the variations among these different translations. Our system is composed of two parts: the structure-aware Treemap for document selection and meta data analysis, and Focus + Context parallel coordinates for in-depth document comparison and exploration. In particular, we want to learn more about which content varies highly with each translation, and which content remains stable. We also want to form hypotheses as to the implications behind these variations. Our visualization is evaluated by the domain experts from Arts and Humanities. © 2011 Springer-Verlag.

关键词： visualization

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Controlled quantum perfect teleportation of multiple arbitrary multi-qubit states

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science China(Physics,Mechanics & Astronomy) 2011年第12期54卷 2208-2216页

作者： SHI RunHua HUANG LiuSheng YANG Wei ZHONG Hong National High Performance Computing Center at Hefei Department of Computer Science and Technology University of Science and Technology of China Hefei 230027 China School of Computer Science and Technology Anhui University Hefei 230039 China Suzhou Institute for Advanced Study University of Science and Technology of China Suzhou 215123 China

We present an efficient controlled quantum perfect teleportation scheme. In our scheme, multiple senders can teleport multiple arbitrary unknown multi-qubit states to a single receiver via a previously shared entanglement state with the help of one or more controllers. Furthermore, our scheme has a very good performance in the measurement and operation complexity, since it only needs to perform Bell state and single-particle measurements and to apply Controlled-Not gate and other single-particle unitary operations. In addition, compared with traditional schemes, our scheme needs less qubits as the quantum resources and exchanges less classical information, and thus obtains higher communication efficiency.

关键词： perfect quantum teleportation controlled quantum teleportation quantum state sharing

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Bamboo - Translating MPI applications to a latency-tolerant, data-driven form 12

Bamboo - Translating MPI applications to a latency-tolerant,...

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ACM/IEEE International Conference for High Performance computing, Networking, Storage, and Analysis

作者： Tan Nguyen Pietro Cicotti Eric Bylaska Dan Quinlan Scott B. Baden Department of Computer Science and Engineering University of California San Diego La Jolla CA 92093 USA Environmental Molecular Sciences Laboratory Pacific Northwest National Laboratory Richland WA 99354 USA Center for Advanced Scientific Computing Lawrence Livermore National Laboratory Livermore CA 94550 USA

ISBN: (纸本)9781467308052

We present Bamboo, a custom source-to-source translator that transforms MPI C source into a data-driven form that automatically overlaps communication with available computation. Running on up to 98304 processors of NERSC's Hopper system, we observe that Bamboo's overlap capability speeds up MPI implementations of a 3D Jacobi iterative solver and Cannon's matrix multiplication. Bamboo's generated code meets or exceeds the performance of hand optimized MPI, which includes split-phase coding, the method classically employed to hide communication. We achieved our results with only modest amounts of programmer annotation and no intrusive reprogramming of the original application source.

关键词： latency-tolerant NERSC's MPI message passing mannose phosphate isomerase remote procedure calls bamboos phase splitting Communication Research data driven AUTOMATIC

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Developing an Automated Mechanism for Cluster computing in computerized Classroom

Developing an Automated Mechanism for Cluster Computing in C...

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International Conference on Computational science (ICCS) on the Ascent of Computational Excellence

作者： Wang, Shuen-Tai Li, Chin-Hung Chang, Hsi-Ya Chen, Ying-Chuan Hsu, Ching-Hsien National Center for High-Performance Computing Taiwan Department of Computer Science and Information Engineering Chung Hua University Taiwan

Scientific computing has become one of the key players in the advance of modern science and technologies. In the meantime, due to the success of developments in processor fabrication, the computing power of Personal computer (PC) is not to be ignored as well. Lots of high throughput type of applications can be satisfied by using the current desktop PCs, especially for those in computerized classrooms, and leave the supercomputers for the demands from large scale high performance parallel computations. The goal of this work is to develop an automated mechanism for cluster computing to utilize the computing power such as resides in computerized classroom. The PCs in computerized classroom are usually setup for education and training purpose during the daytime, and shut down at night. After well deployment, these PCs can be transformed into a pre-configured cluster computing resource immediately without touching the existing education/training environment installed on these PCs. Thus, the training activities will not be affected by this additional activity to harvest idle computing cycles. To echo today's energy saving issues, a dynamic power management is also developed to minimize energy cost. This development not only greatly reduces the management efforts and time to build a cluster, but also implies the reduction of the power consumption by such a mechanism.

关键词： Personal computer cluster computing computerized classroom dynamic power management

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