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International Conference on Advanced Materials in Microwaves and Optics (AMMO 2011)

作者： Zeng, Xiaohui Liu, Dongsheng Luo, Wenlang Fu, Lixin School of Electronics and Information Engineering Jinggangshan University China Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University China

ISBN: (纸本)9783037852736

In order to apply our high efficiency fibre-channel token-routing network (shortened as FC-TR network) to the field of materials simulation research, a new MPI parallel computing environment is proposed and designed, and independently developed a parallel programming environment FC-TR-MPI based on FC-TR network. In FC-TR-MPI, a new method was applied to point-to-point communication that the network communications between processes in the same computing node were changed into memory operations;moreover, according to the underlying software and hardware features of FC-TR network, new algorithms were proposed to optimize the communication performance of some collective communications. Experimental results show that, compared with ScaMPI parallel programming environment, FC-TR-MPI has a higher parallel efficiency and speedup.

关键词： MPI parallel computing environment fibre-channel materials simulation

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Low frequency analysis of resting-state fMRI

Low frequency analysis of resting-state fMRI

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2012 International Conference on Computer Science and Information Processing, CSIP 2012

作者： He, Lianghua Ji, Hongfei Wan, Meng Liu, Shuang Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai China Center for Science and Technology Development of the Ministry Education Beijing China

ISBN: (纸本)9781467314114

Resting state functional magnetic resonance imaging (rsfMRI) is a relatively new and an powerful method for evaluating regional interactions that occur when a participant is not performing an explicit task. Because of sensitiveness to time delay and length of time courses, respectively, traditional methods of correlation and coherence based on region of interest are not very suitable for rsfMRI. In this paper, we analyzed low frequency property of rsfMRI data. Firstly, we calculated the low frequency of resting-state Blood-Oxygenation-Level-Dependent(BOLD) signal on every voxel using Welch method, based on which we analyzed the statistical distribution cross subjects and voxels. The low frequency feature is proved by a series of experiments to be more robust and consistent comparing with coorelation in time domain and coherency in frequency domain. We found that the property of low frequency statistical distribution is dominant on narrow band, which is around 0.0137HZ. © 2012 IEEE.

关键词： Frequency domain analysis

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A Dependability Model for TMR system

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International Journal of Automation and computing 2012年第3期9卷 315-324页

作者： Peng, Jun-Jie Liu, Yan-Ping Chen, Yuan-Yuan School of Computer Engineering and Science Shanghai University Shanghai 200072 China Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China

Much research has been done on the dependability evaluation of computer systems. However, much of this is gone no further than study of the fault coverage of such systems, with little focus on the relationship between fault coverage and overall system dependability. In this paper, a Markovian dependability model for triple-modular-redundancy (TMR) system is presented. Having fully considered the effects of fault coverage, working time, and constant failure rate of single module on the dependability of the target TMR system, the model is built based on the stepwise degradation strategy. Through the model, the relationship between the fault coverage and the dependability of the system is determined. What is more, the dependability of the system can be dynamically and precisely predicted at any given time with the fault coverage set. This will be of much benefit for the dependability evaluation and improvement, and be helpful for the system design and maintenance.

关键词： Dependability Markovian model coverage triple-modular-redundancy (TMR) failure rate.

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A HW/SW co-design of execution migration for shared-ISA heterogeneous chip multiprocessors

A HW/SW co-design of execution migration for shared-ISA hete...

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2013 IEEE 8th International Conference on Networking, Architecture and Storage, NAS 2013

作者： Liu, Hongwei Sang, Bo Huang, Jing Qiu, Ji Gao, Xiang Key Laboratory of Computer System and Architecture Chinese Academy of Sciences No. 6 Kexueyuan South Road Zhongguanchun Haidian District Beijing China Institute of Computing Technology Chinese Academy of Sciences No. 6 Kexueyuan South Road Zhongguanchun Haidian District Beijing China Yuquan Road Shijingshan District Beijing China Loongson Corporation No. 10 Kexueyuan South Road Zhongguanchun Haidian District Beijing China Deptartment of Computer Science Purdue University Lawson Computer Science Build 305 N University Street West Lafayette IN United States

ISBN: (纸本)9780769550343

Heterogeneous multi-core processors have strong potential for performance improvement, energy efficiency and area efficiency, compared to the homogeneous multi-core processors. The present methods of execution migration for heterogeneous multi-core processor suffer in efficiency, cost, compatibility, or programmability. In this paper, we propose a HW/SW code sign migration method based on binary-instrumentation. Our method takes full advantage of the shared-ISA. It enhances the performance of heterogeneous chip multiprocessor with low HW/SW cost. And it's not required to modify source codes or compile system. The experiment results show that the efficiency of our method is 3.29 times of kernel simulation. © 2013 IEEE.

关键词： Energy efficiency

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BTMD: A framework of binary translation based malcode detector

BTMD: A framework of binary translation based malcode detect...

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4th International Conference on Cyber-Enabled Distributed computing and Knowledge Discovery, CyberC 2012

作者： Shan, Zheng Guo, Haoran Pang, Jianmin Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing China National Digital Switching System Engineering and Technology Research Center Zhengzhou China

ISBN: (纸本)9780769548104

Binary Translation technology is used to convert binary code of one Instruction Set Architecture (ISA) into another. This technology can solve the software-inheritance problem and ISA-compatibility between different computers architecture. In this paper, we describe BTMD (Binary Translation based Malcode Detector), a novel framework that exploits static and dynamic binary translation features to detect broad spectrum malware and prevent its execution. By operating directly on binary code with MD Rules on the availability of source code, BTMD is appropriate for translating low-level binary code to high-level proper representation, obtaining CFG (Control Flow Graph) and other high-level Control Structure by MD Parser. Then Critical API Graph based on CFG is generated to do sub graph matching with the defined Malware Behavior Template. MD Engine in BTMD is called to undertake the process to take on the remaining code analysis. Compared with other detection approaches, BTMD is found to be very efficient in terms of detection capability and false alarm rate. © 2012 IEEE.

关键词： Binary codes

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Self-assembly of block copolymers under 3D confinement: Toward nanostructured particles

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Nanoscience and Nanotechnology - Asia 2012年第2期2卷 163-182页

作者： Deng, Renhua Wang, Jianying Liang, Ruijing Liu, Shanqin Zhu, Jintao Hubei Key Laboratory of Materials Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 China Key Laboratory of Large-Format Battery Materials and System Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 China

Compared to self-assembly of block copolymers in bulk, self-assembly of block copolymers under confinement, especially three-dimensional (3D) confinement, can lead to various unexpected microphase-segregated structures, which not only opens a door for deep investigation of the phase behavior of block copolymers, but also offers a precise and powerful route for the preparation of nanostructured particles. A rich variety of unique nanostructured particles can be generated through regulating the confinement effect, interfacial interaction, and volume fraction of each block, which pose great potentials in nanoscience and nanotechnology. In this review, we will first highlight several recent advances in preparing block copolymer nanostructured particles based on 3D confinement theoretically and experimentally. Two types of 3D confinement assembly, e.g., hard and soft confinement, are both discussed. Compared to the 3D hard confinement which has fixed confining geometry and space size, 3D soft confinement assembly are more flexible, and the shape and dimension of the block copolymer particles can be tailored by varying either the internal or external conditions. The functionalization and potential applications of the nanostructured particles will then be discussed, followed by the summary and outlook of this unique field. © 2012 Bentham Science Publishers.

关键词： Block copolymers

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Petri net-based scheduling analysis of dual-arm cluster tools with wafer revisiting

Petri net-based scheduling analysis of dual-arm cluster tool...

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2012 IEEE International Conference on Automation Science and Engineering: Green Automation Toward a Sustainable Society, CASE 2012

作者： Qiao, Yan Wu, Naiqi Zhou, Mengchu Department of Industrial Engineering School of Electro-Mechanical Engineering Guangdong University of Technology Guangzhou 510006 China Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 200092 China

ISBN: (纸本)9781467304283

With wafer revisit, it is complicated to schedule cluster tools in semiconductor fabrication. In wafer fabrication processes, such as atomic layer deposition (ALD), the wafers need to visit some process modules for a number of times. The existing swap-based strategy can be used to operate a dual-arm cluster tool for such a process. It results in a 3-wafer cyclic schedule. However, it is not optimal in the sense of cycle time. Thus, to search for a better schedule, a Petri net model is developed for a dual-arm cluster tool with wafer revisit. With it, the properties of the 3-wafer schedule are analyzed. It is found that, to improve the performance, it is necessary to reduce the number of wafers completed in a cycle. Thus, a 1-wafer schedule is developed by using a new swap-based strategy. © 2012 IEEE.

关键词： Petri nets

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Design issues in ZigBee-based sensor network for healthcare applications

Design issues in ZigBee-based sensor network for healthcare ...

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2012 9th IEEE International Conference on Networking, Sensing and Control, ICNSC 2012

作者： Choi, Jin Soo Zhou, MengChu Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ 07102 United States Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 200092 China

ISBN: (纸本)9781467303880

IEEE 802.15.4/ZigBee sensor networks support small power consumption and node expansion compared to other network standards for WSN. Body sensor networks (BSN) require a number of sensors for sensing medical information from human body, and low power consumption to monitor a patient's status for a long time. However, ZigBee has limited bandwidth and is thus hard to support real time data transmission because of the adoption of CSMA-CA as its medium access control (MAC) protocol. In this paper, we will analyze the reasonable number of nodes, size of payload and packet interval for best QoS for such network. It is found that an appropriate MAC parameters setting can improve the QoS compared to the default setting in IEEE 802.15.4 specification. The effective data rate, average end-to-end delay and packet delivery ratio are found via simulation for various network settings. The results are useful for the construction of ZigBee networks for patient monitoring and care. © 2012 IEEE.

关键词： Medium access control

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Reconstruction of table-manipulation method with constraints based on algebra-shape-computer thought

Reconstruction of table-manipulation method with constraints...

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International Conference on Mechanical Science and Engineering, ICMSE 2012

作者： Li, Dao Guo Fu, Bin Zhou, Zhong Yuan Yang, Chen School of Management Hangzhou Dianzi University Hangzhou 310018 China Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 200092 China

ISBN: (纸本)9783037854723

The table-manipulation method plays a important role in optimizing resource scheduling, scientifically location chosen, task assignment, investment distribution and so on. Most literatures introduction the table-manipulation method used to single thought pattern, for example, the algebra thought model, the shape thought model, or Computer software method, which cruse it is difficult to understand and apply. Therefore, a novel table-manipulation integration approach is proposed by combining the thought of algebra-shape-computer. This builds convenient access among the abstraction, modeling, solving on the practical optimizing problems discussed above. © (2012) Trans Tech Publications, Switzerland.

关键词： Algebra

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Attribute recursive algorithms based on knowledge rough representation

Attribute recursive algorithms based on knowledge rough repr...

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International Conference on Information and Business Intelligence, IBI 2011

作者： Li, Dao-Guo Fan, Zhuo-Bin Chen, Yang School of Management Hangzhou Dianzi University Hangzhou 310018 China Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 200092 China

ISBN: (纸本)9783642290862

Existing representative research achievement of the relevant literatures focused on two *** is how to improve the efficiency of attribute reduction algorithms in all attributes including the added properties. Such as the recursive algorithm to change conjunctive normal form into disjunctive normal form based on the boolean matrix and the algorithm based on radix sorting for computing core and reductions of a given information system, etc. On the other hand focus on the objects recursive algorithms. The drawback is that these methods have not fully use the knowledge gained when some attributes was added to a discussion on the domain. Therefore, the regularity of the core and reduction's changes under adding new attributes into a given information system were discussed. Moreover, the incremental reduction algorithms from a information system was proposed. The experiments show that these algorithms can quickly and exactly calculate new core and reduction of the new information system by taking advantage of the knowledge of the original information system. © 2012 Springer-Verlag Berlin Heidelberg.

关键词： Rough set theory

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