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ENSO事件对中国气候的可能影响

山东气象 2000年第1期20卷 4-12页

作者：赵振国蒋伯仁陈国珍王永光刘海波许力国家气候中心北京100081 山东省气象局山东济南250031

利用 1 95 1 -1 998年的北太平洋海温和中国的温度、降水月平均资料 ,分析了ENSO事件对中国夏季主要雨带、长江中下游梅雨、华北雨季和中国秋冬季降水、温度、台风之间的可能影响 ,结果表明ENSO事件是影响中国气候的重要因素之一。

关键词：厄尔尼诺中国气候可能影响

支撑一体化大电网的调度控制系统架构及关键技术

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电力系统自动化 2018年第6期42卷 1-8页

作者：许洪强姚建国於益军汤必强国家电网有限公司国家电力调度控制中心北京市100031 中国电力科学研究院有限公司(南京) 江苏省南京市210003

特高压交直流电网提升了大范围资源优化配置的能力,对电网调度控制系统也提出了新的挑战。分析了电网特性变化对电网调度控制技术支撑的新需求,提出了"物理分布、逻辑统一"的调度控制系统总体架构,并从基础支撑、模型云与调控大数据、... 详细信息

特高压交直流电网提升了大范围资源优化配置的能力,对电网调度控制系统也提出了新的挑战。分析了电网特性变化对电网调度控制技术支撑的新需求,提出了"物理分布、逻辑统一"的调度控制系统总体架构,并从基础支撑、模型云与调控大数据、基于源—网—荷互动的调度控制、大电网一体化安全风险防控、试验验证与运维等方面,具体分析了需要重点突破的关键技术。

关键词：电网调度安全预警源—网—荷互动调度控制系统

水热法制备质谱专用提取多肽的金属螯合纳米磁珠

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化学学报 2007年第4期65卷 344-348页

作者：王娜董方霆张学敏李爱玲王杰王红霞李萍吴胜明杨晓虹吉林大学药学院长春130021 国家生物医学分析中心北京100850

应用水热法合成质谱专用提取血清多肽的金属螯合纳米磁珠,可用于质谱对血清中多肽分布情况的研究,获得血清多肽谱．对磁珠进行透射电镜(TEM),原子力显微镜(AFM)和傅立叶红外光谱FT-IR的表征,显示该粒子粒径在70～90 nm．并通过质谱验证... 详细信息

应用水热法合成质谱专用提取血清多肽的金属螯合纳米磁珠,可用于质谱对血清中多肽分布情况的研究,获得血清多肽谱．对磁珠进行透射电镜(TEM),原子力显微镜(AFM)和傅立叶红外光谱FT-IR的表征,显示该粒子粒径在70～90 nm．并通过质谱验证该金属螯合磁珠能有效提取血清中的多肽,该磁珠为质谱进行疾病诊断解决样品制备的技术难题,具有广阔应用前景．

关键词：热水解法质谱多肽金属螯合磁珠

TESTING TALK ON WOMEN’S CONTRACEPTION AND REPRODUCTION HEALTH.

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TESTING TALK ON WOMEN’S CONTRACEPTION AND REPRODUCTION HEAL...

The effects of cement density and pipe dimension on casing waves in oil wells

第二次北京生育调节国际学术研讨会

作者： Zheng Hongqing~1 Yang Meiqing~2 Liu Minqin~(3 1 21)Maternity and Child Care Centre.Xianyou Fujian.351200 china 3 Dept.of Gynaecology and Obstetrics Xianyou Fujian 351200 china.

＜正＞Reproduction health is a completely new idea-to *** contraception and Reproduction health are of great *** fertility regulation policy, the women in our country not only play an important role in work,but also d...

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Chinese Journal of Acoustics 2011年第1期30卷 24-32页

作者： CHEN Dehu WANG Xiuming ZHANG Hailan WANG Dong WEI Tao LIU Liping State Key Laboratory of Acousties~ Institute of Acoustics Chinese Academy of Sciences Beijing 100190 Department of Geophysics Daqing Petroleum Institute Dinqing 163318 Logging center of COSL Yanjiao 101149

The acoustic field in a cased hole is studied through numerical modeling by combining experiment measurement when the first and scond interfaces are bonded well. The effects of the density of the cement, the diameter and thickness of the steel pipe on the amplitude of casing arrival （ACA） are investigated, and a part of the numerical results are compared with the experimental results. These results show that the ACA decreases with the increasing density of the cement. There exists a large difference between the ACAs for the low- and normal-density cements. Therefore, the different standard should be taken in the bonding evaluation for ce- ments with different densities. As the thickness of the steel pipe increases while its diameter keeps as a constant, the arrival time of the casing wave remains unvaried, while the ACA in- creases. But, when the diameter of the pipe with a constant thickness increases, the arrival time of the easing wave is delayed, and the ACA decreases. As for three kinds of the steel pipe commonly used in oilfields, the relative amplitude of the casing arrival is larger in the big pipe. In addition, the numerical results of the varying trend of the relative amplitude of the casing arrival with the density of cements, on the whole, are in agreement with the experimental ones.

关键词： The effects of cement density and pipe dimension on casing waves in oil wells

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国家实验室认可与环境监测

四川环境 2003年第1期22卷 28-30页

作者：肖兰平曹阳宗贵仪四川省环境监测中心站四川成都610041 眉山市环境监测站四川眉山620010

《全国环境监测条例》 (征求意见稿 )及《全国环境监测工作“十五”计划纲要》 (讨论稿 )以及《水和废水监测分析方法》 (第四版 )中均提出在全国环境监测系统内实行实验室认可。我国进入WTO后 ,形势也要求各检测机构必须进行实验室认可... 详细信息

《全国环境监测条例》 (征求意见稿 )及《全国环境监测工作“十五”计划纲要》 (讨论稿 )以及《水和废水监测分析方法》 (第四版 )中均提出在全国环境监测系统内实行实验室认可。我国进入WTO后 ,形势也要求各检测机构必须进行实验室认可后 ,方能进入市场化的国际、国内检测市场。本文介绍了我国加入WTO后 ,各检测机构、环境监测站所面临的机遇及挑战 ,介绍了实验室认可对检测机构的重要性和必要性 ,并对实验室认可的评审步骤。

关键词：环境监测检测机构实验室认可评审

Synchronization for two delayed bi-directionally coupled networks with noise perturbation via adaptive couplings

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Synchronization for two delayed bi-directionally coupled net...

RELAXED CONDITIONS FOR CONSENSUS IN MULTI-AGENT COORDINATION

第24届中国控制与决策会议

作者： SUN Mei 1 , CAO Long, CHEN Ying 1. Nonlinear Scientific Research center, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. china

Noise perturbation and time delay are ubiquitous in both natural and man-made systems, and must be taken into consideration in the design of synchronization. For solving the synchronization problem between two delayed bi-directionally coupled networks with noise perturbation, a synchronization criteria based on adaptive coupling was firstly presented in this paper. Based on LaSalle-type invariance principle for stochastic differential delay equations, the adaptive update laws of the coupling strengths are obtained to realize the synchronization. And the configuration matrices of the networks are not required to be symmetric and irreducible. Numerical simulations are given to show the correctness and effectiveness of theoretical results.

关键词： Network Bi-directionally Coupling Noise Perturbation Adaptive Coupling

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Journal of Systems Science & Complexity 2008年第3期21卷 347-361页

作者： Qin LI Zhongping JIANG Department of Electrical and Computer Engineering Polytechnic University Six Metrotech Center Brooklyn NY 11201 USA

This paper proposes relaxed sufficient conditions for the consensus of multi-agent systems by the averaging protocols with time-varying system topology. Bidirectional information exchange between neighboring agents is considered and both the discrete-time and continuous-time consensus protocols are studied. It is shown that the consensus is reached if there exists an unbounded time sequence such that two agents who own the maximum and minimum states at each time instant in the sequence will be jointly connected at some future time. Further, this result is applied to the original nonlinear Vicsek model, and a sufficient condition for the heading consensus of the group with restricted initial conditions is obtained.

关键词： Averaging protocol consensus multi-agent systems Vicsek's model

A RESEARCH OF UWB RAKE RECEIVER BASED ON NOVEL RLS ADAPTIVE ALGORITHM

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Journal of Electronics(china) 2006年第3期23卷 341-345页

作者： Yin Yong Yu Nenghai Dong Weijie MOE-Microsoft Key Laboratory of Multimedia Computing and Communication Information Processing Center University of Science and Technology of China Hefei 230027 China

A modified RAKE receiver based on novel Recursive Least Squares （RLS） adaptive algorithm is proposed. The receiver uses L-fingered correlators, which are composed of RLS adaptive filters, to enhance the performance of multipath receiving. It can also track the amplitude of the received signal to form a real-time amplitude estimation which is correlated with the power of excess delay bin. The simulation results based on the IEEE UltraWide Band （UWB） channel models （CMI to CM4） show that the novel RLS algorithm can alter the attenuation estimation with the finger＇s power delay profile, and RAKE receiver with few fingers can be employed to get high performance.

关键词： UltraWide Band (UWB) RAKE receiver Recursive Least Squares (RLS)