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Involution Fixing∪from （i=1） to r(RP（1）)mi×(CP（1）)si*)

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Communications in Mathematical Research 1999年第1期 46-52页

作者： Ma Kai (Department of Mathmeatics, Sichuan University, Chengdu, 610064) Liu Zongze and Wang Yanying (Department of Mathematics, Hebei Normal University, shijiazhuang, 050016)

§０．ＩｎｔｒｏｄｕｃｔｉｏｎＷｅｗｒｉｔｅＦＰ（ｎ）ｆｏｒＣＰ（ｎ）（ｎ－ｄｉｍｅｎｓｉｏｎａｌｃｏｍｐｌｅｘｐｒｏｊｅｃｔｉｖｅｓｐａｃｅ）ｏｒＨＰ（ｎ）（ｎ－ｄｉ－ｍｅｎｓｉｏｎａｌｑｕａｔｅｒｎｉｏｎｉｃｐｒ... 详细信息

§０．ＩｎｔｒｏｄｕｃｔｉｏｎＷｅｗｒｉｔｅＦＰ（ｎ）ｆｏｒＣＰ（ｎ）（ｎ－ｄｉｍｅｎｓｉｏｎａｌｃｏｍｐｌｅｘｐｒｏｊｅｃｔｉｖｅｓｐａｃｅ）ｏｒＨＰ（ｎ）（ｎ－ｄｉ－ｍｅｎｓｉｏｎａｌｑｕａｔｅｒｎｉｏｎｉｃｐｒｏｊｅｃｔｉｖｅｓｐａｃｅ）．Ｍｎ...

关键词： Involution Bordism Wu’s Formula

Research on the Zero Value Measuring Technique of BD Receiver

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Research on the Zero Value Measuring Technique of BD Receive...

第三届中国卫星导航学术年会

作者： Wang Xiangkun1,2.1. The 54th Research Institute of CETC, shijiazhuang, {2., , 050081 2. Satellite Navigation Technology and Equipment Engineering Technology Research Center of Hebei province, shijiazhuang, {2.

According to the working principle of BD1 satellites navigation system, this paper describes the basic composing of BD receiver zero value testing system and analyzes the measuring method in order to improve the measuring precision. Experiments shows that this method can correctly obtain the zero value of the receiver. Meanwhile, it is also valuable to other related areas.

关键词： BD satellites navigation system RDSS single direction zero val- ue double direction zero value

Reflections on the Anti-Interference Issue of the PLC Control System

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Reflections on the Anti-Interference Issue of the PLC Contro...

2.12.International Conference on Future Information Technology and Management Science & Engineering(FITMSE 2.12.

作者： Li Ge 1, Wenhong Liu 2. 1,2.{2. Institute of Technology, {2., 0502.8, {2.

With the rapid development of the society, PLC control system has been applied to various areas of society more widely than ever, changing our life and making it more colorful. PLC control system is commonly used in coarse environment, so the issue as interference occurs. The problem as how to efficiently solve the anti-interference in the control system attracts the author's focus.

关键词： PLC Control System, Anti-Interference Issue, Reflections.

Criterion Theorems of Set Valued Martingales With Values in a Banach Space

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The Journal of china Universities of Posts and Telecommunications 1995年第1期2卷 69-71页

作者： Xu Shundou(Department of Basic Courses, shijiazhuang Postal College shijiazhuang 0500{2., P. R. {{2.)

In this paper, by means of support functions and distance functions, we give tow criterion theorems ofset valued martingales with values in a Banach space.

关键词： set valued martingale,support function,distance function

纳秒级窄线宽脉冲钛宝石激光注入BBO晶体光参量放大器

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中国激光 2002年第2期29卷 104-106页

作者：王丽杨建黄骝河北师范大学物理系河北石家庄050016 北京工业大学物理系北京100022

实验上采用纳秒级窄线宽脉冲钛宝石激光注入BBO光参量放大器 (BBO OPA) ,实现了一台纳秒级Nd∶YAG激光器作钛宝石激光器和BBO光参量激光器抽运源的高效率系统。获得了钛宝石激光作为信号光注入BBO OPA时其输出能量为无信号光注入时的 6... 详细信息

实验上采用纳秒级窄线宽脉冲钛宝石激光注入BBO光参量放大器 (BBO OPA) ,实现了一台纳秒级Nd∶YAG激光器作钛宝石激光器和BBO光参量激光器抽运源的高效率系统。获得了钛宝石激光作为信号光注入BBO OPA时其输出能量为无信号光注入时的 6倍 ,并实现了 5 70～ 6 70nm的连续可调谐窄线宽 (<0 1nm)

关键词：纳秒掺钛蓝宝石激光器光参量放大器迁入 BBO晶体

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从学生投诉看高校图书馆的读者服务

图书馆论坛 2004年第4期24卷 212-214页

作者：张梅平河北师范大学图书馆河北石家庄050016

图书馆是传播科学文化的园地 ,肩负着提高全民族文化素质的使命。图书馆各项职能履行得到位与否 ,读者服务是关键。文章从学生投诉分析高校图书馆读者服务存在的问题及产生根源。

关键词：高校图书馆读者服务学生投诉馆员素质

Pollen indication to source plants in the eastern desert of china

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Science Bulletin 2005年第15期 98-107页

作者： LI Yuecong1,2. XU Qinghai2. ZHAO Yingkui3, YANG Xiaolan4, XIAO Jule1, CHEN Hui2.5 & Lü Xinmiao5 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 10002., china 2. College of Resources and Environment, Hebei Normal University, shijiazhuang 050016, china 3. Department of Environmental Management, University of Central Lancashire, Preston, UN 4. Hebei Geography Institute, Hebei Academy of Sciences, shijiazhuang 050011, china 5. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, china

In order to investigate the indication of major pollen types to source plants, 39 surface pollen samples are collected from 39 plant communities. The results show that diversity of pollen assemblages presents in different commu-nities. Chenopodiaceae pollen percentages are highest in Kalidium communities and Ceratoides communities (higher than 45%, average is 63.4%), but high Ephedra pollen per-centages (higher than 3.3%, average is 16.5%)in Ceratoides communities make it distinguished from Kalidium communi-ties. Artemisia pollen percentages (more than 50%) are much higher than Chenopodiaceae (less than 35%) in Artemisia Communities. Nitraria pollen percentages (higher than 2., average is 13.6%) are highest in Nitraria communities com-pared with those in other community patterns. Tamariceae pollen percentages (higher than 2., average is 8.6%) are highest both in Tetraena and Reaumuria communities com-pared with those in other community patterns. But in Reau-muria communities, Artemisia pollen percentages are higher than Chenopodiaceae with some other pollen types such as Gramineae, Compositae, Leguminosae; on the contrary, in Tetraena communities, Artemisia pollen percentages are less than Chenopodiaceae with few other pollen types. Calli-gonum pollen only appears in Calligonum communities (higher than 2.,average is 5%). The results of cluster analysis (CLA) and detrended correspondence analysis (DCA) show that the pollen indication to source plants can be reflected by association indices (A), over-representation in-dices (O), under-representation indices (U), R-value, the av-erage pollen percentages where parent plants are absent (Xa) and the average pollen percentages where parent plants are present (Xp). Zygophyllum, Calligonum, Tetraena, Tribulus and Tamariceae can indicate source plants very well, owing to high A scores. Artemisia, Chenopodiaceae and Gramineae have high R-values, and Nitraria, Cruciferae and sedum have high O scores, so they are over-represente

关键词： eastern desert of china pollen indication association indices (A) over-representation indices (O) under-representation indices (U) correlation coefficients (CC) similarity coefficients (C) detrended correspondence analysis (DCA) cluster analysis (CLA) ratios of Nitraria and Ephedra (N/E) ratios of Ephedra and Artemisia (E/A) ratios of Artemisia and Chenopodiaceae (A/C).

Study on Software Reliability in Intelligent Electric Apparatus

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Study on Software Reliability in Intelligent Electric Appara...

第一届电工产品可靠性与电接触国际会议

作者： Shuyuan Shang Wenxiong Li 1 Hebei University of Economics & Business shijiazhuang 050011 china {2.shijiazhuang Railway Institute shijiazhuang 050043 china

＜正＞ This paper states the concept of software reliability, studies the demand about software system in intelligent apparatus and the engineering methods to assure software reliability, put forward the application t... 详细信息

关键词： Intelligent electrical apparatus Software reliability Reliability design

Preparation,characterization and thermal properties of ternery lanthanide complexes with halogen-benzoic acid and 1,10-phenanthroline

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Preparation,characterization and thermal properties of terne...

中国化学会第十五届全国化学热力学和热分析学术会议

作者： Juan-Fen Wang~(1 2. Ning Ren~3 Jian-Jun Zhang~(1 2.) Ke-Zhong Wu~2.(1 Experimental Center Hebei Normal University shijiazhuang 050016 P.R.china.) (2.College of Chemistry & Material Science Hebei Normal University shijiazhuang 050016 P.R. china) (3 Department of Chemistry Handan College Handan 056005 P.R.china)

＜正＞The two new series of solid ternery lanthanide complexes of Ln（Ⅲ）（Ln = Eu,Tb,Ho） were synthesized with 2.3-dichlorobenzoate（2.3-DCIBA） or 2.chloro-4-fluorobenzoate（2.Cl-4-FBA） as the anion ligand,and 1,... 详细信息

关键词： lanthanide complexes halogen-benzoic acid 1,10-phenanthroline fluorescence heat capacity