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Challenges to Data-Path Physical Design Inside SOC 被引量:2
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作者 经彤 洪先龙 +5 位作者 蔡懿慈 许静宇 杨长旗 张轶谦 周强 吴为民 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2002年第8期785-793,共9页
Previously,a single data-path stack was adequate for data-path chips,and the complexity and size of the data-path was comparatively small.As current data-path chips,such as system-on-a-chip (SOC),become more complex,m... Previously,a single data-path stack was adequate for data-path chips,and the complexity and size of the data-path was comparatively small.As current data-path chips,such as system-on-a-chip (SOC),become more complex,multiple data-path stacks are required to implement the entire data-path.As more data-path stacks are integrated into SOC,data-path is becoming a critical part of the whole giga-scale integrated circuits (GSI) design.The traditional physical design methodology can not satisfy the data-path performance requirements,because it can not accommodate the data-path bit-sliced structure and the strict performance (such as timing,coupling,and crosstalk) constraints.Challenges in the data-path physical design are addressed.The fundamental problems and key technologies in data-path physical design are analysed.The corresponding researches and solutions in this research field are also discussed. 展开更多
关键词 physical design data-path bit-sliced structure SYSTEM-ON-A-CHIP giga-scale integrated circuits very-deep-submicron
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Function and Chromosomal Localization of Differentially Expressed Genes Induced by Marssonina brunnea f.sp.multigermtubi in Populus deltoides
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作者 张燕梅 张新叶 +3 位作者 陈雨辰 王琦 王明庥 黄敏仁 《Journal of Genetics and Genomics》 SCIE CAS CSCD 北大核心 2007年第7期641-648,共8页
A total of 1,160 differentially expressed genes induced by Marssonina brunnea f. sp. muhigermtubi were identified in Populus deltoides cv. 'Lux' (1-69/55) with two-colour cDNA microarray including 2,952 cDNAs from... A total of 1,160 differentially expressed genes induced by Marssonina brunnea f. sp. muhigermtubi were identified in Populus deltoides cv. 'Lux' (1-69/55) with two-colour cDNA microarray including 2,952 cDNAs from two cDNA libraries constructed with 72 h inoculated poplar leaves. Functional analysis showed that 1,160 genes were classified into 11 functional categories that are involved in metabolism (15.9%), signal transduction (9.5%), transcription and replication (8.7%), and cell rescue and defense (7.8%). Among them, 926 genes were sporadically localized on 19 linkage groups. Chromosome 2 contained 102 (11%) differentially expressed genes, followed by chromosome 1 which contains 93 genes (10%), and chromosome 17 had the least number of differentially expressed genes. Clustering of expressed sequence tags (ESTs) in poplar genome was observed at the terminal regions of several chromosomes. The relationship between cluster of genes and plant defense response would be further studied. 展开更多
关键词 Marssonina brunnea POPLAR cDNA microarray functional analysis chromosomal localization
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厦漳跨海大桥引桥隔震效果分析 被引量:2
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作者 王明远 张星雷 袁涌 《土木工程与管理学报》 2011年第3期382-384,共3页
厦漳大桥地处地震高烈度区。为了解决其抗震问题,厦漳大桥北汊南引桥采用普通铅芯隔震橡胶支座和滑动限位式铅芯隔震橡胶支座混合隔震,本文通过有限元软件Ansys对其进行有限元动力分析,并与全部采用普通铅芯隔震橡胶支座对比,从理论上... 厦漳大桥地处地震高烈度区。为了解决其抗震问题,厦漳大桥北汊南引桥采用普通铅芯隔震橡胶支座和滑动限位式铅芯隔震橡胶支座混合隔震,本文通过有限元软件Ansys对其进行有限元动力分析,并与全部采用普通铅芯隔震橡胶支座对比,从理论上验证隔震支座的减震效果。 展开更多
关键词 滑动限式铅隔震橡胶支座 附加弯矩 混合隔震
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Automated visual position detection and adjustment for optical waveguide chips and optical fiber arrays 被引量:1
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作者 郑煜 开小超 +1 位作者 段吉安 李白冰 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第10期3868-3875,共8页
The alignment coupling between optical waveguide chips and optical fiber arrays is the basis of the alignment coupling of planar optical waveguide devices, and the precise position detection with angle and spacing adj... The alignment coupling between optical waveguide chips and optical fiber arrays is the basis of the alignment coupling of planar optical waveguide devices, and the precise position detection with angle and spacing adjustments is one of the key steps of alignment coupling. A methodology for position detection, and angle and spacing adjustment was proposed for optical waveguide chips and optical fiber arrays based on machine vision. The experimental results show angle detection precision levels higher than 0.05°, line detection precision levels higher than 0.1 μm, and detection time less than 2 s. Therefore, the system developed herein meets the precise requirements necessary for position detection, and angle and spacing adjustments for optical waveguide chips and optical fiber arrays. 展开更多
关键词 planar optical waveguide alignment coupling automated alignment machine vision
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共轨喷油器电磁铁结构与加工工艺的改进
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作者 平晓锋 李宝峰 矫亚利 《现代车用动力》 2014年第1期53-55,共3页
针对早期共轨喷油器总成跑合后性能变化的现象,阐述了引起这种变化现象的主要原因,并从电磁铁部件两大零件:限位芯和外圆镶圈着手,提出了从结构、材料及加工工艺等方面的改进方案。经冷拖及高温试验结果表明,该改进技术方案可行。
关键词 共轨喷油器总成 跑合试验 衔铁行程 电磁铁部件 外圆镶圈
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Reconfigurable-System-on-Chip Implementation of Data Processing Units for Space Applications
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作者 张宇宁 常亮 +1 位作者 杨根庆 李华旺 《Transactions of Tianjin University》 EI CAS 2010年第4期270-274,共5页
Application-specific data processing units (DPUs) are commonly adopted for operational control and data processing in space missions. To overcome the limitations of traditional radiation-hardened or fully commercial d... Application-specific data processing units (DPUs) are commonly adopted for operational control and data processing in space missions. To overcome the limitations of traditional radiation-hardened or fully commercial design approaches, a reconfigurable-system-on-chip (RSoC) solution based on state-of-the-art FPGA is introduced. The flexibility and reliability of this approach are outlined, and the requirements for an enhanced RSoC design with in-flight reconfigurability for space applications are presented. This design has been demonstrated as an on-board computer prototype, providing an in-flight reconfigurable DPU design approach using integrated hardwired processors. 展开更多
关键词 RSoC in-flight reconfigurability spaceborne data processing unit
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羊八井ARGO实验初期阵列性能 被引量:5
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作者 刘琨 何会海 +8 位作者 陈欣 卢红 木钧 沈培若 谭有恒 吴超勇 杨群宇 张慧敏 张勇 《高能物理与核物理》 CSCD 北大核心 2004年第9期914-917,共4页
中意合作羊八井ARGO实验采用大型RPC阵列探测广延大气簇射事例 ,本文报告了该探测阵列初期建设进展状况及测试运行的包含 16个CLUSTER的局部阵列性能 ,并探讨由此阵列所采集数据重建后的事例芯位、到达方向与角分辨等 .初步测试结果表明... 中意合作羊八井ARGO实验采用大型RPC阵列探测广延大气簇射事例 ,本文报告了该探测阵列初期建设进展状况及测试运行的包含 16个CLUSTER的局部阵列性能 ,并探讨由此阵列所采集数据重建后的事例芯位、到达方向与角分辨等 .初步测试结果表明RPC阵列可很好地在高海拔、低气压条件下正常运行 . 展开更多
关键词 高能物理学 羊八井ARGO实验 天顶角 角分辨 芯位 广延大气簇射
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Genome wide expression analysis of the effect of Socheongryong Tang in asthma model of mice 被引量:1
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作者 Chi-Yeon Lim Hyung-Woo Kim +1 位作者 Bu-Yeo Kim Su-In Cho 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2015年第2期168-174,共7页
OBJECTIVE:To investigate the molecular effect of Socheongryong Tang(SCRT,Xiaoqinglong Tang in Chinese) on whole genome level in asthma mouse model by microarray technology.METHODS:Asthma was induced by intranasal inst... OBJECTIVE:To investigate the molecular effect of Socheongryong Tang(SCRT,Xiaoqinglong Tang in Chinese) on whole genome level in asthma mouse model by microarray technology.METHODS:Asthma was induced by intranasal instillation of ovalbumin in mouse.After administration of SCRT on asthma-induced mouse,the expression of genes in lung tissue was measured using whole genome microarray.The functional implication of differentially expressed genes was performed using ontological analysis and the similarity of promoter structure of genes was also analyzed.RESULTS:Treatment of SCRT restored expression level of many up- or down-regulated genes in asthma model,and this recovery rate means SCRT could regulate a set of genes having specific TFBS binding sites.CONCLUSION:In this study,we identified a set of genes subjected to similar regulation by SCRT in asthma model in mice. 展开更多
关键词 Asthma Transcription factors Microarray analysis Genome wide expression Socheongryong Tang(Xiaoqinglong Tang)
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Large-scale assembly of Cu/CuO nanowires for nano-electronic device fabrication 被引量:2
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作者 XU Ke TIAN XiaoJun +3 位作者 YU HaiBo YANG Yang ZHOU Lei LIU LianQing 《Science China(Technological Sciences)》 SCIE EI CAS 2014年第4期734-737,共4页
To improve the efficiency of nano-electronic device fabrication, a new method named floating electrical potential assembly is proposed to realize large-scale assembly of Cu/CuO nanowires, The simulation of floating el... To improve the efficiency of nano-electronic device fabrication, a new method named floating electrical potential assembly is proposed to realize large-scale assembly of Cu/CuO nanowires, The simulation of floating electrical potential distribution on the micro-electrode chip is performed by COMSOL software, and the simulation result shows that the coupled electrical poten- tial on the floating drain electrodes is very close to the original electrical potential applied on the gate electrode, whicb means that the method can provide di-electrophoresis (DEP) force for all the electrode pairs at one time, thus realizing large-scale as- sembly at one time. With Cu/CuO nanowires well dispersed and micro-electrode chip fabrication, nanowires assembly experiments are performed and the experimental results show that Cu/CuO nanowires are assembled at hundreds of micro-electrodes pairs at one time, and the success rate of nanowires assembly also reaches 90%. 展开更多
关键词 large-scale assembly Cu/CuO nanowires floating potential di-electrophoresis
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