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HISPF智能构件管理器的研究

计算机工程与应用 2003年第25期39卷 223-225页

作者：侯秀萍邹宽城李万龙长春工业大学计算机科学与工程学院长春130012

构件管理器是医疗卫生机构信息系统应用平台HISPF的重要组成部分,其基本思想采用构件理论与技术结合人工智能理论实现了对构件库的编辑,通过刻面分类技术对构件进行聚类以实现构件的分类存储及目录库的管理。该文对其基本原理、关键技... 详细信息

构件管理器是医疗卫生机构信息系统应用平台HISPF的重要组成部分,其基本思想采用构件理论与技术结合人工智能理论实现了对构件库的编辑,通过刻面分类技术对构件进行聚类以实现构件的分类存储及目录库的管理。该文对其基本原理、关键技术进行了讨论。

关键词： HISPF 人工智能构件构件管理器

辐射致冷及辐射体的光谱选择性对致冷效果的影响

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太阳能学报 1982年第2期 128-136页

作者：葛新石孙孝兰中国科学技术大学

本文概述了辐射致冷的机理,讨论了由不同的透明“风屏”及辐射体组成的几种可能的冷却系统,分析了致冷系统中辐射体与天空之间辐射换热的计算方法。为比较辐射体的光谱选择性特性对致冷效果的影响,文中对以理想辐射体、铝化的聚氟乙烯... 详细信息

本文概述了辐射致冷的机理,讨论了由不同的透明“风屏”及辐射体组成的几种可能的冷却系统,分析了致冷系统中辐射体与天空之间辐射换热的计算方法。为比较辐射体的光谱选择性特性对致冷效果的影响,文中对以理想辐射体、铝化的聚氟乙烯表面及以TiO2.基的白漆为辐射体的三种辐射致冷系统作了实例计算。计算结果表明,三种系统都具有明显的致冷效果,以理想辐射体的冷却能力最强。本文对今后拟开展研究的课题提出了几点建议。

关键词：辐射体天空辐射特性单色吸收率辐射散热辐射致冷黑体辐射灰体辐射红外辐射光谱选择性

Preparation of High Pore Volume Pseudoboehmite Doped with Transition Metal Ions through Direct Precipitation Method

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Preparation of High Pore Volume Pseudoboehmite Doped with Tr...

Amperometric Detection of Hydrogen Peroxide Utilizing Synergistic Action of Cobalt Hexacyanoferrate and Carbon Nanotubes Chemically Modified with Platinum Nanoparticles

第十六届全国化学热力学和热分析学术会议

作者： Fan Yang~a,Qiang Wang~a,Jing-Long Yan~a,Jian Fang~a,Ji-Hua Zhao~(a,*), Wei-Guo Shen~b a School of chemistry and chemical Engineering,Lanzhou University,Lanzhou 730000 b School of chemistry and chemical Engineering,East China University of science and Technology, Shanghai 2.02.7

Mesoporous pseudoboehmite with novel pore properties was prepared via direct precipitation method using aluminum nitrate nonahydrate as the inorganic alumina precursor and different surfactants containing bis(2.ethylhexyl) sulfosuccinate sodium salt(AOT),N-cetyl-N,N,N-trimethylammonium bromide(CTAB) and tert-octylphenoxypolyethoxyethanol(Triton X-100) as the structure-directing agents. The as-synthesized mesoporous products were characterized by a variety of techniques,such as wide-angle X-ray diffraction(XRD),which implied that pure pseudoboehmite could be obtained when the final pH was between 8 and 10.5,and transmission electron microscope(TEM) images of the as-made nanocomposites indicated that the presence of different surfactant micelles played an important role in the morphology and growth of *** addition,it was noteworthy that the pore properties could be enhanced significantly by the presence of transition metal ***,when nickel nitrate was added to the aluminum nitrate solution at the molar ratio of 0.0040,the specific surface area,the pore volume and the average pore diameter of pseudoboehmite reached significantly enlarged values of 381 m/g,1.18 cm/g and 9 nm,respectively.

关键词： pseudoboehmite surfactant transition metal ions micelle

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Amperometric Detection of Hydrogen Peroxide Utilizing Synerg...

第十六届全国化学热力学和热分析学术会议

作者： Li-Juan Han~a,Qiang Wang~a,Jian-Xin Liu~a,Jian Fang~a,Ji-Hua Zhao~(*a), Wei-Guo Shen~(a,b) a School of chemistry and chemical Engineering,Lanzhou University,Lanzhou 730000, b School of chemistry and chemical Engineering,East China University of science and Technology, Shanghai 2.02.7

In this study,a novel composite of cobalt hexacyanoferrate nanoparticles(CoNP) and platinum nanoparticles(PtNP) on carbon nanotubes(CNTs) is obtained by ultrasonically mixing of CoNP synthesized in microemulsion with CNTs chemically modified with platinum nanoparticles(Pt/CNTs). Cyclic voltammetric and amperometric measurements on glass carbon electrode showed that the composite (called CoNP-Pt/CNTs) exhibits a well-defined pair of redox peaks and a prominent electrocatalytic activity toward the reduction of hydrogen peroxide(HO).Besides,the current response of CoNP-Pt/CNTs is 2.orders of magnitude higher than the response of CoNP alone and 1 order of magnitude higher than the response of Pt/CNTs or CoNP/CNTs *** higher efficiency can be attributed to a remarkable synergistic effect between CoNP,PtNP and *** sensor shows a linear response to HO concentrations ranging from 0.2.M to 1.2. mM with a detection limit of 0.1μM,a maximum sensitivity of 0.744 A·M and a fast response time below 2.s.

关键词： Electrochemical sensor Cobalt hexacyanoferrate nanoparticles Platinum nanoparticles Carbon nanotubes

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内隐学习在武术教学中的应用

体育学刊 2008年第8期15卷 72-75页

作者：陈庆合郑永成张红岳志荣河北科技师范学院体育系河北秦皇岛066004

中华武术是具有传统民族特色的难美类体育项目,她具有深厚的文化底蕴、鲜明的东方运动风格特点、复杂的技术动作结构、富有哲理的攻防技击特色。武术的这些特征为其教学带来很大的难度。内隐学习是在刺激结构高度复杂、关键信息较为隐... 详细信息

中华武术是具有传统民族特色的难美类体育项目,她具有深厚的文化底蕴、鲜明的东方运动风格特点、复杂的技术动作结构、富有哲理的攻防技击特色。武术的这些特征为其教学带来很大的难度。内隐学习是在刺激结构高度复杂、关键信息较为隐蔽、不可能有意识解决的条件下发生的,具有突发性特点的,学习者能在瞬间依靠直觉、领悟、灵感等方式解决问题和抽象概括出事物中隐含的底层规则。提高武术教学效果的内隐学习的策略有:用录像教学提高感性认识;重视武术基本功和典型动作教学;加强基础武术理论和民族传统文化的教学;加强动作用法和武术实用技法的教学;创设丰富多样的练习环境和方法;练习要做到"拳不离手"。

关键词：武术内隐学习理论教学方法

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一个前向安全的强代理签名方案

信息与电子工程 2003年第4期1卷 257-259页

作者：谭作文刘卓军中国科学院数学与系统科学研究院系统科学研究所北京100080

基于代理签名理论和前向安全签名理论,提出了一个前向安全的强代理签名方案,其安全性建立在求离散对数和模合数求平方根是困难的这两个假设的基础上。此方案同时对代理签名人和原始签名人的权益提供了保护,攻击者即使在第i时段入侵系统... 详细信息

基于代理签名理论和前向安全签名理论,提出了一个前向安全的强代理签名方案,其安全性建立在求离散对数和模合数求平方根是困难的这两个假设的基础上。此方案同时对代理签名人和原始签名人的权益提供了保护,攻击者即使在第i时段入侵系统,也无法伪造第i时段之前的签名,因而具有较高执行效率和较强的安全性。

关键词：公钥密码学数字签名前向安全离散对数模合数求平方根代理签名

A Two-step Deposition Process for Electrode Fabrication of CdZnTe Detectors

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A Two-step Deposition Process for Electrode Fabrication of C...

CO_2.flux evaluation over the evergreen coniferous and broad-leaved mixed forest in Dinghushan, China

第18届国际真空大会

作者： K. F. Qin * L. J. Wang J. H. Min J. J. Zhang J. Huang X. Y. Liang K. Tang Y. B. Xia School of Materials science and Engineering Shanghai University Shanghai 2.0072.China

Recently, Cadmium Zinc Telluride （CdZnTe） has rapidly drawn a significant interest due to its high potential for room temperature nuclear radiation detectors. The quality of CdZnTe crystal plays a vital role in determining the performance of these detectors. Besides, the surface preparation technique including etching, passivation and electrodes deposition process are also important. The electrical properties and interfacial properties of Au-CdZnTe contacts fabricated by the thermal vacuum deposition have been reported. Though the thermal vacuum deposition is convenient and controllable, the key problems of how to enhance its adhesion strength and to reduce the degradation of the contact interfacial properties still remained.

关键词： CdZnTe thermal vacuum deposition detector

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science China Earth sciences 2006年第S2期49卷 127-138页

作者： WANG Chunlin, YU Guirui, ZHOU Guoyi, YAN Junhua, ZHANG Leiming, WANG Xu, TANG Xuli & SUN Xiaomin South China Botanical Garden, Chinese Academy of sciences, Guangzhou 510650, China Climate and Agrometeorology Center of Guangdong Province, China Meteorological Administration, Guangzhou 510080, China Institute of Geographic science and Natural Resources Research, Chinese Academy of sciences, Beijing 100101, China Graduate University of Chinese Academy of sciences, Beijing 100049, China

The Dinghushan flux observation site, as one of the four forest sites of ChinaFLUX, aims to acquire long-term measurements of CO2.flux over a typical southern subtropical evergreen coniferous and broad-leaved mixed forest ecosystem using the open path eddy covariance method. Based on two years of data from 2.03 to 2.04, the characteristics of temporal variation in CO2.flux and its response to environmental factors in the forest ecosystem are analyzed. Provided two-dimensional coordinate rotation, WPL correction and quality control, poor energy-balance and underestimation of ecosystem respiration during nighttime implied that there could be a CO2.leak during the nighttime at the site. Using daytime (PAR > 1.0μmol-1·m-2.s-1) flux data during windy conditions (u* > 0.2.m·s-1), monthly ecosystem respiration (Reco) was derived through the Michaelis-Menten equation modeling the relationship between net ecosystem CO2.exchange (NEE) and photosynthetically active radiation (PAR). Exponential function was employed to describe the relationship between Reco and soil temperature at 5 cm depth (Ts05), then Reco of both daytime and nighttime was calculated respectively by the function. The major results are: (i) Derived from the Michaelis-Menten equation, the apparent quantum yield (α) was 0.002.±0.0011 mgCO2.μmol-1 photons, and the maximum photosynthetic assimilation rate (Amax) was 1.102.0.2.8 mgCO2.m-2.s-1. Indistinctive seasonal variation of o or Amax was consistent with weak seasonal dynamics of leaf area index (LAI) in such a lower subtropical evergreen mixed forest. (ii) Monthly accumulated Reco was estimated as 95.3±2..1 gC·m-2.mon-1, accounting for about 68% of the gross primary product (GPP). Monthly accumulated NEE was estimated as -43.2.2..6 gC·m-2.mon-1. The forest ecosystem acted as carbon sink all year round without any seasonal carbon efflux period. Annual NEE of 2.03 and 2.04 was estimated as -563.0 and -441.2.gC·m-2.a-1 respectively, accounting for about 32. of G

关键词： carbon dioxide flux eddy covariance Dinghushan southern subtropical region evergreen coniferous and broad-leaved mixed forest ChinaFLUX.

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基于分治策略与指导抽样的二视运动分割

信息安全与通信保密 2010年第3期7卷 66-68,71页

作者：王会靖陈凯管海兵上海交通大学信息安全工程学院上海200240 上海交通大学计算机科学与工程系上海200240

动态场景运动分割作为计算机视觉领域的一个重要研究方向,在图像检索,运动分析,场景解释中均有广泛应用。该问题的关键在于如何同时确定出运动模型的个数和对应的运动参数。区别于以往的全局聚类和随机抽样方法,提出一种基于由分治策略... 详细信息

动态场景运动分割作为计算机视觉领域的一个重要研究方向,在图像检索,运动分析,场景解释中均有广泛应用。该问题的关键在于如何同时确定出运动模型的个数和对应的运动参数。区别于以往的全局聚类和随机抽样方法,提出一种基于由分治策略和指导抽样的二视场景运动分割方法,无需对运动类型个数进行任何预先假设,通过指导抽样和分治处理保证准确性和高效性。实验表明该方法能够给出满意的运动分割结果。

关键词：运动分割分治策略指导抽样