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一种基于视线矢量的双星系统自主导航方法研究

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系统仿真学报 2009年第13期21卷 4088-4091,4096页

作者：常晓华崔祜涛崔平远刘宇飞哈尔滨工业大学深空探测基础研究中心哈尔滨150001

研究了近地绕飞双星系统的自主定轨问题,设计了一种基于相对视线矢量测量的自主导航方法。本方法利用导航相机观测双星之间的相对视线矢量,并转化为相机坐标系下的像元像线,从而得到导航系统的量测模型;然后结合卫星的轨道动力学方程,... 详细信息

研究了近地绕飞双星系统的自主定轨问题,设计了一种基于相对视线矢量测量的自主导航方法。本方法利用导航相机观测双星之间的相对视线矢量,并转化为相机坐标系下的像元像线,从而得到导航系统的量测模型;然后结合卫星的轨道动力学方程,通过扩展卡尔曼滤波算法精确估计双星在地心惯性系下的位置和速度共12个分量。最后,通过数学仿真验证了此导航方法的可行性。

关键词：自主定轨视线矢量 EKF滤波导航相机

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基于Agent的自主探测器软件结构

计算机工程与应用 2002年第6期38卷 231-235页

作者：徐瑞崔平远徐晓飞哈尔滨工业大学深空探测研究中心哈尔滨150001

深空探测的环境特点要求探测器具有一定的自主性,因而对探测器的软件结构也提出了新的要求,文章针对这一情况提出一种基于Agent的自主探测器软件结构,该结构包括两部分:短期反作用控制Agent和长期规划Agent,前者主要是处理一些紧急情况... 详细信息

深空探测的环境特点要求探测器具有一定的自主性,因而对探测器的软件结构也提出了新的要求,文章针对这一情况提出一种基于Agent的自主探测器软件结构,该结构包括两部分:短期反作用控制Agent和长期规划Agent,前者主要是处理一些紧急情况下的操作(如探测器故障时),后者是从全局考虑,对探测器的长期任务作出决策。文中软件结构以长期规划Agent为主,反作用控制Agent为辅,共同完成深空探测器的飞行任务。

关键词：自主探测器 Agent 软件结构航天

Fundamental study of CO_2 control technologies and policies in china

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Science china(Technological Sciences) 2008年第7期51卷 857-870页

作者： JIN HongGuang1, ZHANG XiLiang2, GAO Lin1, YUE Li2, HE JianKun2 & CAI RuiXian1 1 institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, china 2 institute of Nuclear and New Energy technology, Tsinghua University, Beijing 100084, china institute of Engineering Thermophysics Chinese Academy of Sciences Beijing 100080 China institute of Nuclear and New Energy technology Tsinghua University Beijing 100084 China

The technical roadmap and policies for CO2 mitigation suitable for china are a common center of attention in the fields of energy, environment, and management science in the country. Emphasizing interaction between technical research and policy research, this work discovers the potential breakthrough in the integrated field. The technical difficulties of recovering CO2 are pointed out, the mechanism of combining CO2 recovery with energy conversion is investigated, and the basic principle for integrating an environmental-friendly energy system is discussed. Moreover, the formulation of a new energy system that can recover CO2 with very low or even zero energy penalty is proposed, while the assessment methodology and model system for the technical roadmap of CO2 emission control are developed. Finally, a new technical roadmap constructing an energy network suitable for china is proposed, which may provide a new way for the development of sustainable energy and environment technologies.

关键词： CO2 capture and storage technical roadmap energy policy

A Flavobacterium lindanitolerans Strain Isolated from the Ascites Sample of a Chinese Patient with EV71 Virus Infection

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Biomedical and Environmental Sciences 2011年第6期24卷 694-696页

作者： TIAN Guo Zhong1,△,PIAO Dong Ri1,△,ZHAO Hong Yan1,△,JIANG Hai1,CUI Bu Yun1,and LI Jun Yan2,#1.State Key Laboratory for Infectious Diseases Prevention and control,National institute for Communicable Disease control and Prevention,Chinese center for Disease control and Prevention,Beijing 102206,china 2.National institute of Occupational Health and Poison control,Chinese center for Disease control and Prevention,Beijing 100050,china State Key Laboratory for Infectious Diseases Prevention and control National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Beijing 102206 China National institute of Occupational Health and Poison control Chinese Center for Disease Control and Prevention Beijing 100050 China

A strain of Flavobacterium lindanitolerans isolated from a sick child`s ascites was *** 16S rRNA gene of the strain was 100% identical to that of Flavobacterium lindanitolerans which was first identified in India in *** was first described that the isolate required X factor (Hemin) for growth in the optimal conditions of 37°C with 5% *** isolate produced indole and *** did not present hemolytic feature on blood agar.

关键词： Flavobacterium lindanitolerans 16S rRNA Biology

Implication of Reported Viral Hepatitis Incidence Rate Change in Hubei Province, china, between 2004-2010

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同方期刊数据库

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Journal of Huazhong University of Science and technology(Medical Sciences) 2012年第3期32卷 428-433页

作者：胡樱宇传华陈邦华王雷 Department of Epidemiology and Biostatistics School of Public Health of Wuhan University Wuhan University Global Health institute institute of Infectious Disease control and Prevention Wuhan Center for Disease Control and Prevention institute of Infectious Disease control and Prevention Hubei Center for Disease Control and Prevention

This study examined the change of reported incidence rate for viral hepatitis in Hubei province, china, between 2004 to 2010 to provide scientific evidence for viral hepatitis control. Reported viral hepatitis infection cases were queried from Centre for Disease control of Hubei Province, china. The incidence of viral hepatitis A decreased steadily across the study period. Viral hepatitis B composed 85% of the viral hepatitis cases. When reported incidence rates for chronic hepatitis B increased, the rates of acute and unclassified cases dropped from 2005 to 2010. The reported viral hepatitis B incidence rate for males was around 1.5-2 times higher than for females. The average annual percentage change of reported viral hepatitis B incidence rates was 4%. The same index for viral hepatitis C was 28%. The reported viral hepatitis B incidence rate of people under 20 years old declined over the period. This decrease was mainly attributed to the recent implementation of vaccination plan. Reported incidence rate of viral hepatitis E also rose in those years. Having a better understanding on reported incidence rates of the present surveillance system is important for developing strategies for further prevention of viral hepatitis. In addition, the data showed that a surveillance system that differentiates new and former infected cases will be more effective in providing evidence for disease control.

关键词： viral hepatitis reported incidence rate vaccination prevention

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基于xPC的小卫星半物理仿真验证平台

系统仿真学报 2009年第20期21卷 6444-6448页

作者：杨正贤孔宪仁王继河邱文勋王峰哈尔滨工业大学卫星技术研究所哈尔滨150080

介绍了小卫星控制系统地面半物理仿真验证平台的系统软硬件设计,并进行了姿态控制系统仿真验证。xPC实时仿真机作为平台核心,在气浮台上与星载计算机、敏感器、执行机构等实物组成闭环控制回路。引入数据库系统对仿真数据统一管理,联合... 详细信息

介绍了小卫星控制系统地面半物理仿真验证平台的系统软硬件设计,并进行了姿态控制系统仿真验证。xPC实时仿真机作为平台核心,在气浮台上与星载计算机、敏感器、执行机构等实物组成闭环控制回路。引入数据库系统对仿真数据统一管理,联合地面显示终端实现了仿真数据的可视化及仿真过程的回放。利用建立的实时仿真系统,进行了卫星三轴姿态控制半物理仿真,结果表明本仿真验证平台系统软硬件结构的正确性。

关键词：小卫星半物理仿真 xPC 数据库

Modernization of Chinese herbal compound and the high performance liquid chromatography tandem mass spectrometry (HPLC-MS)

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Modernization of Chinese herbal compound and the high perfor...

Limitation of fault-sealing and its control on hydrocarbon accumulation——An example from the Laoyemiao Oilfi eld of the Nanpu Sag

两岸三地药理学与临床药理学术会议

作者： LI Wen-lan~(1,2.3) SUN Zhi~(1,2) DU Juan~(1,2) (1.Engineering research center of natural antineoplastic drugs, Ministry of Education, harbin 150076, china 2. center of research and Development on Life Sciences and Environmental Sciences, harbin University of Commerce, harbin 150076, china 3. institute of Materia Medica and Postdoctoral Programme of harbin University of Commerce, harbin 150076, china)

Chinese herbal compound is playing an important role on curing human *** it has been a trend that Chinese herbal compound is being used all over the world in 21 ***,our Chinese herbal compound is facing serious challenge for the lack of canonical system of quality criterion for Chinese herbal compound so it has been a urgent problem to set up the quality control standards and reveal therapeu- tic basis of Chinese herbal *** order to give full play to the advantages of Chinese herbal com- pound,modern scientific and technological is used to research of Chinese herbal compound,especially the high performance liquid chromatography tandem mass spectrometry(HPLC-MS),because it is high sensi- tive,rapid,and obtain more *** is very necessary that HPLC-MS is uesed to elucidate tile effec- tive components of basic substances of Chinese Herbal Compound,and endow traditional Chinese medicine with modern scientific connotation.

关键词： modernization of Chinese herbal compound the high performance liquid chromatography tandem mass spectrometry(HPLC-MS)

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Petroleum Science 2008年第4期5卷 295-301页

作者： Jiang Zhenxue Dong Yuexia Li Hongyi Liu Luofu Liu Guangdi Li Xiaoying Basin and Reservoir research center China University of Petroleum Beijing 102249 China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum Beijing 102249 China research institute of Exploration and Development Jidong Oilfield PetroChina Tangshan Hebei 063004 China School of Resources and Information technology China University of Petroleum Beijing 102249 China

Based on previous studies on the internal structures of fault belts, the fault belts in the Laoyemiao Oilfield of the Nanpu Sag can be divided into three units, a crushed zone, an upper induced fracture zone and a lower induced fracture zone according to the log response characteristics. The upper induced fracture zone is characterized by the development of pervasive fractures and has a poor sealing or non-sealing capability. It therefore can act as pathways for hydrocarbon migration. The lower induced fracture zone consists of fewer fractures and has limited sealing capability. The crushed zone has a good sealing capability comparable to mudstone and can thus prevent lateral migration of fluid. Through physical modeling and comparing laboratory data with calculated data of oil column heights of traps sealed by faults, it is concluded that the fault-sealing capability for oil and gas is limited. When the oil column height reaches a threshold, oil will spill over from the top of reservoir along the lower induced fracture zone under the action of buoyancy, and the size of reservoir will remain unchanged. Analysis of the formation mechanisms of the fault-sealed reservoirs in the Nanpu Sag indicated that the charging sequence of oil and gas in the reservoir was from lower formation to upper formation, with the fault playing an important role in oil and gas accumulation. The hydrocarbon potential in reverse fault-sealed traps is much better than that in the consequent fault-sealed traps. The reverse fault-sealed traps are favorable and preferred exploration targets.

关键词： Limitation of fault-sealing fault belt oil column height hydrocarbon accumulation Nanpu Sag

H∞ Channel Filter Design for Tracking Time-Varying Mobile Radio Channels:A Polynomial Approach in Krein Space

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H∞ Channel Filter Design for Tracking Time-Varying Mobile R...