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Cover Picture: Mechanistic Studies on the Transformation of Ethanol into Ethene over Fe-ZSM-5 Zeolite (ChemPhysChem 1/2013)

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ChemPhysChem 2013年第1期14卷 1-1页

作者： Thana Maihom Dr. Pipat Khongpracha Dr. Jakkapan Sirijaraensre Prof. Dr. Jumras Limtrakul Laboratory for Computational and Applied Chemistry Department of Chemistry Faculty of Science and Center of Nanotechnology Kasetsart University Research and Development Institute Kasetsart University Bangkok 10900 (Thailand) NANOTEC Center for Nanoscale Materials Design for Green Nanotechnology Kasetsart University Bangkok 10900 (Thailand) Center for Advanced Studies in Nanotechnology and its Applications in Chemical Food and Agricultural Industries Kasetsart University Bangkok 10900 (Thailand)

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VLSI implementation of sub-pixel interpolator for AVS encoder

VLSI implementation of sub-pixel interpolator for AVS encode...

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2010 International Conference on Life System modeling and Simulation, LSMS 2010 and the 2010 International Conference on Intelligent Computing for Sustainable Energy and Environment, ICSEE 2010

作者： Guanghua, Chen Anqi, Wang Dengji, Hu Shiwei, Ma Weimin, Zeng School of Mechatronics Engineering and Automation Shanghai Key Laboratory of Power Station Automation Technology Shanghai University Shanghai 200072 China Key Laboratory of Advanced Display and System Applications Microelectronic Research and Development Center Shanghai University Shanghai 200072 China

Interpolation is the main bottleneck in AVS real-time high definition video encoder for its high memory bandwidth and large calculation complexity caused by the new coding features of variable block size and 4-tap filter. In this paper, a high performance VLSI architecture of interpolation supporting AVS Baseline@L4 is presented. Vertical redundant data reuse, horizontal redundant data reuse and sub-pixel data reuse schemes are presented to reduce memory bandwidth and processing cycle. The separated 1-D interpolation filters are used to improve throughput and hardware utilization. The proposed design is implemented on FPGA with operating frequency of 150MHz and can support 1080p (1920x1080)/30fps AVS real-time encoder. It is a useful intellectual property design for real-time high definition video application. © 2010 Springer-Verlag.

关键词： Pixels

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Characterization of protein tyrosine phosphatase H1 knockout mice in animal models of local and systemic inflammation

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Journal of Inflammation 2010年第1期7卷 1-14页

作者： Patrignani, Claudia Lafont, David T Muzio, Valeria Gréco, Béatrice Van Huijsduijnen, Rob Hooft Zaratin, Paola F MerckSerono Ivrea Vivo Pharmacology Department 10010 Colleretto G. (TO) via ribes 5 Italy University of Eastern Piedmont Department of Medical Sciences 28100 Novara via solaroli 17 Italy Wellcome Trust Sanger Institute Team 109 Hinxton CB1 1SA Cambridge United Kingdom Advanced Accelerator Applications Research and Development Pharmacology Department 10010 Colleretto Giacosa (TO) via Ribes 5 Italy Merck Serono International S.A. Innovation and Partnerships Department 1211 Geneva 9 chemin des mines Switzerland Merck Serono International S.A. Molecular Neurobiology MS Department Geneva Research Center 1202 Geneva 9 Chemin de Mines Switzerland Scientific Research Department Associazione Italiana Sclerosi Multipla Onlus 16149 Genova Via Operai 40 Italy

Background. PTPH1 is a protein tyrosine phosphatase expressed in T cells but its effect on immune response is still controversial. PTPH1 dephosphorylates TCRzeta in vitro, inhibiting the downstream inflammatory signaling pathway, however no immunological phenotype has been detected in primary T cells derived from PTPH1-KO mice. The aim of the present study is to characterize PTPH1 phenotype in two in vivo inflammatory models and to give insights in possible PTPH1 functions in cytokine release. Methods. We challenged PTPH1-KO mice with two potent immunomodulatory molecules, carrageenan and LPS, in order to determine PTPH1 possible role in inflammatory response in vivo. Cytokine release, inflammatory pain and gene expression were investigated in challenged PTPH1-WT and KO mice. Results. The present study shows that carrageenan induces a trend of slightly increased spontaneous pain sensitivity in PTPH1-KO mice compared to WT (wild-type) littermates, but no differences in cytokine release, induced pain perception and cellular infiltration have been detected between the two genotypes in this mouse model. On the other hand, LPS-induced TNF, MCP-1 and IL10 release was significantly reduced in PTPH1-KO plasma compared to WTs 30 and 60 minutes post challenge. No cytokine release modulation was detectable 180 minutes post LPS challenge. Conclusion. In conclusion, the present study points out a slight potential role for PTPH1 in spontaneous pain sensitivity and it indicates that this phosphatase might play a role in the positive regulation of the LPS-induced cytokines release in vivo, in contrast to previous reports indicating PTPH1 as potential negative regulator of immune response. © 2010 Patrignani et al;licensee BioMed Central Ltd.

关键词： Cytometric Bead Array Carrageenan Injection Minute Post Treatment

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Improvement of interleaved multiplication algorithm

Improvement of interleaved multiplication algorithm

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1st International Conference on Information Science and Engineering, ICISE2009

作者： Chen, Guanghua Liu, Ming Zhu, Jingming Zheng, Weifeng School of Mechatronics Engineering and Automation Shanghai Key Laboratory of Power Station Automation Technology Shanghai University Shanghai 200072 China Key Laboratory of Advanced Display and System Applications Microelectronic Research and Development Center Shanghai University Shanghai 200072 China

ISBN: (纸本)9780769538877

An improved modular multiplication algorithm based on the interleaved multiplication is presented in this paper. Carry save addition (CSA), redundant representation, a fast lookup table and a counter register are used to improve this algorithm. Carry save addition and redundant representation are used to replace other additions like carry select addition, carry lookahead addition and so on, because carry propagation brought by those additions can be prevented by carry save addition, and redundant representation can make the arithmetic operations fast without carry propagation. The fast lookup table with only 7 pre-calculated values can minimize the number of additions, and can only be addressed once in one iteration, which not only speed up, but also save area compared with other literatures used lookup tables. The iteration number can be reduced by a counter register being added in this improved method to compute the number of 0 from the most significant bit of one operand like X. Analysis and emulation result shows the area and time complexity (AT) of the improved method is equal or even less than 2n2. ©2009 IEEE.

关键词： Table lookup

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Inside Cover: Oxidative Dehydrogenation of Propane over a VO2-Exchanged MCM-22 Zeolite: A DFT Study (ChemPhysChem 16/2010)

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ChemPhysChem 2010年第16期11卷 3370-3370页

作者： Sippakorn Wannakao Dr. Bundet Boekfa Dr. Pipat Khongpracha Prof. Dr. Michael Probst Prof. Dr. Jumras Limtrakul Laboratory for Computational and Applied Chemistry Department of Chemistry Faculty of Science and Center of Nanotechnology Kasetsart University Research and Development Institute Kasetsart University Bangkok 10900 (Thailand) Fax: (+66) 2-562-5555 NANOTEC Center of Excellence National Nanotechnology Center Kasetsart University Bangkok 10900 (Thailand) Center for Advanced Studies in Nanotechnology and its Applications in Chemical Food and Agricultural Industries Kasetsart University Bangkok 10900 (Thailand) Institute of Ion Physics and Applied Physics University of Innsbruck 6020 Innsbruck (Austria)

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Wigner-Ville distribution and cross Wigner-Ville distribution of noisy signals

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Journal of Systems Engineering and Electronics 2008年第5期19卷 1053-1057页

作者： Chen Guanghua Ma Shiwei Liu Ming Zhu Jingming Zeng Weimin Key Laboratory of Advanced Display and System Applications Ministry of Education & Microelectronic Research and Development Center Shanghai Univ. Shanghai 200072 P. R. China

The Wigner-Ville distribution （WVD） and the cross Wigner-Ville distribution （XWVD） have been shown to be efficient in the estimation of instantaneous frequency （IF）. But the statistical result of the IF estimation from XWVD peak is much better than using WVD peak. The reason is given from a statistical point of view. Theoretical studies show that XWVD of the analyzed signal can be estimated from XWVD of the noise-contaminated signal. The estimation is unbiased, and the variance is equal to that of noise. In this case, WVD cannot be estimated from W-VD of the noise-contaminated signal. Therefore, higher SNR is required when WVD is used to analyze signals.

关键词： Wigner-Ville distribution cross Wigner-Ville distribution instantaneous frequency expectation variance.

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Hardware /software co-design for Viterbi decoder

Hardware /software co-design for Viterbi decoder

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International Conference on (ICEPT) Electronic Packaging Technology

作者： Ming Li Tao Wen Microelectronics Research & Development Center Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University China

Convolutional code and Viterbi decoding is one of the methods used for channel coding. Convolutional coding is widely used in many aspects because of its excellent performance. However, both the coding algorithm and hardware implementation are very complex. Along with the continuous deepening of SOC design, hardware-software co-design technology has become more and more important as one part of SOC design. A hardware-software platform used for the design of the Viterbi decoder is proposed in this paper. The platform includes embedded software, hardware acceleration, and peripheral interface. Good practicality and powerful verification functions are proved, and optimum design for the Viterbi decoder can be achieved by using the platform.

关键词： Hardware Software Viterbi algorithm Decoding Computer architecture Field programmable gate arrays System-on-a-chip

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Simulation of multi-bit digital delta-sigma modulator

Simulation of multi-bit digital delta-sigma modulator

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International Conference on (ICEPT) Electronic Packaging Technology

作者： Wen-Rong Yang Yuan-Yuan Cheng Jiong-ming Wang Key Laboratory of Advanced Display and System Applications Ministry of Education Microelectronic Research & Development Center Shanghai University Shanghai China

The paper describes a four-order delta-sigma modulation (DSM) with 15 levels quantizer which is used in a 24-bit 44.1-kHz sample-rate audio digital-to-analog converter (DAC). An odd level quantizer has been chosen instead of an even level to reduce quantization noise. The noise transfer function (NTF) is designed to have the zeros optimally in order to increase DR. The peak SNR of the DSM is about 130 dB, which is enough for an audio DAC designed with a 0.35 um CMOS technology.

关键词： Noise Signal to noise ratio Quantization CMOS technology Transfer functions CMOS integrated circuits Converters

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The design of the cache crossbar based on OpenSPRAC architecture

The design of the cache crossbar based on OpenSPRAC architec...

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International Conference on (ICEPT) Electronic Packaging Technology

作者： Xi-chuan Wang Bin-feng Qian Microelectronic Research & Development Center Key Laboratory of Advanced Display & System Applications Ministry of Education Shanghai University Shanghai China

Multi-core processor is widely used on the server and desktop computer nowadays. This paper describes the structure of a cache crossbar which used in the multi-core processor SPARC T2. The cores can use the cache crossbar to exchange the data in the L2 cache banks. The multi cores can communicate among each other core by sharing the data in the L2 cache banks. And with the analysis of the CCX, this paper provides a protocol for connecting multi cores and cache banks. The cache crossbar is implemented in SMIC 0.13 mum with design compiler and can run at 200 MHz.

关键词： Magnetic cores Protocols Sun Computer architecture Pipelines Registers Packaging

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research of design-for-testability of CMOS image sensor

Research of design-for-testability of CMOS image sensor

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International Conference on (ICEPT) Electronic Packaging Technology

作者： Zhaohui Ou Feng Lin Microelectronics Research & Development center Key Laboratory of Advanced Display and System Applications (Shanghai University) Ministry of Education Shanghai University Shanghai China

CMOS image sensor has experienced explosive growth in recent years. As increasing of number of pixel scale and complexities of circuit, testability of image sensor chip has become an important problem that must be dealt with by both design and test engineers. A systematic approach to handle testability of CMOS image sensor circuits is urgently needed, because current test methods less address this domain. In this paper, a uniform and systematic approach is explored to the testability problem of CMOS image sensor, and it covers the image sensor defect analysis, fault model definition and test system design. The experimental data shows the fault coverage can be up to 99.3%.

关键词： Pixel CMOS image sensors Image sensors Circuit faults System-on-a-chip Photodiodes Noise

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