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Instruction-set Simulators: A Survey

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Instruction-set Simulators: A Survey

A comparison of mesospheric winds measured by FPI and meteor radar located at 40N

Asian Simulation Conference/The 6th International conference on system Simulation and Scientific Computing

作者： wan Han, GAO Xiaopeng (Computer science Department, beijing University of Aeronautics & Astronautics, beijing 100083, china)

As embedded systems, in particular processor micro-architectures, have become increasing complex, methods for evaluating system designs before they are implemented in hardware are becoming increasingly important. One such method, instruction-set simulators (ISS) have become essential tools for embedded system research and development. This paper surveys and analyzes the evolution of the ISS, from interpretive ISS to compilation based ISS, we categorize and compare existing techniques, such as just-in-time cache compiled simulation (JIT-CCS) , instruction set compiled simulation (IS-CS). Then discusses architecture description languages employed in the ISS development, and statistically approaches for improving simulation methodology. The strengths and weaknesses of different approaches, including speed, flexibility, retargetbility and easy-of-maintenance are considered. In a concluding section, we discuss our future work including the software architecture of ISS, software reuse, and simulation methodology improvement.

关键词： interpretive simulation compiled simulation instruction set simulation architecture description language simulation methodology.

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A comparison of mesospheric winds measured by FPI and meteor...

Fault Detection of Networked Control systems with Uncertain Time-Varying Delay and Quantization Error

第十四届全国日地空间物理学术研讨会

作者： JIANG GuoYing1 XU JiYao1 Yuan Wei1 Ning BaiQi2 wan WeiXing2 & Hu LianHuan2 (1 State Key Laboratory of Space Weather, Center for Space science and Applied Research, chinese academy of sciences, beijing 100190) (2 beijing National Observatory of Space Environment, Institute of Geology and Geophysics, chinese academy of sciences, beijing 100029)

Winds derived from OH Meinel 892.0 nm detection by a FPI （Fabery-Perot Interferometer） are compared with the simultaneous wind measurements from a meteor radar during April - May of 2010. The peak height of OH Meinel 892.0 nm is about 87 km. The variation of FPI wind at 87 km mostly have the similar track to meteor radar wind at 87 km, and the data values of FPI wind mainly fall into the range of meteor radar wind. However, there are still quantitative differences between the observations of the two systems. The best linear correlation occurs in meridional winds of two systems in April of 2010;and （3） An obvious wave signal with 0.2 cycle/day frequency is found in meridional winds observed by both FPI and meteor radar.

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Journal of Shanghai Jiaotong university(science) 2011年第5期16卷 513-518页

作者：李斌万一鸣叶昊 Department of Automation Tsinghua University

Problems related to fault detection of networked control systems (NCSs) with both uncertain time-varying delay and quantization error are studied in this paper. A novel model with the form of polytopic uncertainty is given to represent the influences of both the time-varying delay and the quantization error, and then the reference model based method is used to design the residual generator that is robust to both unknown network-induced delay and unknown inputs. A numerical example is also given to illustrate the merits of the presented method. The proposed method can be regarded as an extension of the authors' former work, which can only deal with time-varying delay.

关键词： fault detection networked control systems (NCSs) delay quantization error polytopic uncertainty

Studies on Single-Ion Conducting Polymer with Pendant Sulfonate Group

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Chemical Research in chinese Universities 1992年第3期8卷 267-272页

作者： ZHANG Sheng-shui(Laboratory of Solid State Ionics,beijing University of science and Technology, beijing, 100083)wan Guo-xiang (Chengdu Institute of Organic Chemistry, Academia Sinica, Chengdu, 610015)

The present paper narrates the single-ion conduction of the network polymer with lithium sulfonate as pendant group studied by using DC polarization. The Willianms-Landel-Ferry parameters, calculated from the temperature dependence of conductivity, agree reasonably well with universal values, verifying the influence of segmental motion on conductivity. Additional confirmation was obtained from a Vogel-Tammann-Fulcher plots. The battery composed of (Li/this film/PAn) performs better characteristics than other systems using polymer solid electrolytes.

关键词： Crosslinked copolymer Polymeric solid electrolyte Lithium battery

Thermal Regimes of Lithosphere and Geothermal Resources Potential in Fujian Province, china

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Acta Geologica Sinica(English Edition) 1988年第4期1卷 451-461页

作者： wan Tianfeng Chu Mingji Chen Mingyou beijing Graduate School, Wuhan College of Geology WUHAN COLL GEOL BEIJING GRAD SCHBEIJINGPEOPLES R CHINA

From the determinations of surface heat flow based on silica geothermometry, residual heat flow,radiogenic heat production of rocks, thermal conductivities of rocks and so on, the temperatures at differentdepths of the lithosphere in Fujian Province are estimated by using a one-dimensional steady-state model. Ac-cording to these and the research on geological structures. the possibility of existence of various geothermalsystems in Fujian is discussed. The authors consider that in Fujian, geothermal systems related to shallow magmatism do not exist andhot dry rock systems can not be exploited for the time being. However, intermediate-and low-temperaturehydrothermal systems are well developed. They are controlled by active faults and distributed widely insoutheastern Fujian. but do not have an anomalous heat source. The groundwater circulates at great depthsand has a temperature usually less than 150℃ with less discharge but good quality. It can be used directly as avaluable geothermal water resource but not suitable to be developed as an energy source.

关键词： china Thermal Regimes of Lithosphere and Geothermal Resources Potential in Fujian Province

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模糊PID技术在热板焊接机中的应用

武汉理工大学学报 2008年第7期30卷 158-161页

作者：王英男邢忠宝苏宛新中国科学院长春光学精密机械与物理研究所

通过对热板焊接机的执行机构永磁同步电动机的数学模型分析,确立了基于转子磁场定向的控制策略和模糊自整定PID的控制方法。应用模糊控制理论,对系统所处的不同状态实现PID参数的在线整定。结果表明,采用模糊自整定PID控制器后,在控制... 详细信息

通过对热板焊接机的执行机构永磁同步电动机的数学模型分析,确立了基于转子磁场定向的控制策略和模糊自整定PID的控制方法。应用模糊控制理论,对系统所处的不同状态实现PID参数的在线整定。结果表明,采用模糊自整定PID控制器后,在控制非线性和时变对象时,控制效果优于PID控制器,可满足热板焊接机的控制需求。

关键词：自动控制技术永磁同步电动机模糊PID控制热板焊接机

An Approximate Optimal Relationship in the Sampling Plan with Inspection Errors

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Journal of systems science and systems Engineering 2001年第1期13卷 38-43页

作者： YANG Ji ping 1, QIU wan hua 1, Martin NEWBY 2 1.School of Economics & Management, beijing University of Aeronautics and Astronautics, beijing 100083, china 2.Department of Actuarial science and Statistics, City University, London, EC1V 0HB, UK School of Economics & Management Beijing University of Aeronautics and Astronautics Beijing 100083 China Department of Actuarial science and Statistics City University London EC1V 0HB UK

：The paper presents and proves an approximate optimal relationship between sample size n andacceptance number c in the sampling plans under imperfect inspection which minimize the Bayesian risk. Theconclusion general... 详细信息

关键词： sampling inspection sampling plan imperfect inspection

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基于遗传算法的制造流程价值优化

系统工程学报 2005年第5期20卷 524-529页

作者：杨青邱菀华北京航空航天大学经济管理学院

为解决最短路线动态规划的维数障碍及模式欺骗性问题,提出了一种数组链染色体编码方式及基于自适应性变异概率和模拟退火惩罚函数法的适应性遗传算法(AGA),仿真测试验证了该算法的有效性.针对某发动机壳体制造工艺流程优化问题,采用质... 详细信息

为解决最短路线动态规划的维数障碍及模式欺骗性问题,提出了一种数组链染色体编码方式及基于自适应性变异概率和模拟退火惩罚函数法的适应性遗传算法(AGA),仿真测试验证了该算法的有效性.针对某发动机壳体制造工艺流程优化问题,采用质量功能展开法得到了各工艺方案的价值,以工艺路线的总价值最大为目标函数、总成本为约束条件,采用AGA得到了一条最佳工艺路线.

关键词：动态规划遗传算法价值优化制造流程

Engineer and split an efficient hypercompact CRISPR–CasΦ genome editor in plants

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Plant Communications 2024年第7期5卷 8-11页

作者： Yan Sun Jianjian Hu Zhichao Hu Hejie Zhou Yuhong Gao Yini Liu Yuan Ji Gencheng Xu Yifan Guo Yuanyan Zhang Yunlu Tian Xi Liu Shirong Zhou Yuqiang Liu Tingdong Li Chao Li Jianmin wan State Key Laboratory of Crop Genetics&Germplasm Enhancement and Utilization Jiangsu Engineering Research Center for Plant Genome EditingNational Observation and Research Station of Rice Germplasm ResourcesNanjing Agricultural UniversityNanjing 210095China Zhongshan Biological Breeding Laboratory Nanjing 210095China Sanya Institute of Nanjing Agricultural University Hainan Seed Industry LaboratorySanya 572025China State Key Laboratory of Crop Stress Biology for Arid Areas College of AgronomyNorthwest A&F UniversityYangling 712100China State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop ScienceChinese Academy of Agricultural SciencesBeijing 100081China These authors contributed equally to this article

The programmable CRISPR-Cas genome editing technology,adopted from prokaryotic adaptive immune systems,has revolutionized genome engineering in plants(Liu et al.,2022a).Many efforts have been made to improve the activity,specificity,and protospacer adjacent motif(PAM)variants of Class 2 Cas nucleases,such as Cas9,Cas12a,and Cas12b(Liu et al.,2022a).However,their large size(∼1000–1400 amino acids)poses a challenge in scenarios requiring a compact Cas nuclease,particularly in urgent situations like plant virus-induced genome editing(Cheuk and Houde,2018;Li et al.,2021;Varanda et al.,2021).

关键词： CRISPR genome editor