Identification of the wave-particles interaction in space plasma using higher-order statistics

The interaction of wave-particles and wave-wave in the space plasmas are essentially non-linear or non-Gaussian processes. Using the higher-order statistical analyses methods (higher-order moments and bi-tri correlation or bi-tri spectrum), its physical properties can be described. The question addressed in this paper is that of the usefulness of higher-order statistical analysis for identification of the wave-particles interaction in space plasmas. The signals handled are from the ARCAD-3 ISOPROBE experiment on ELF frequency range, then strong electrostatic turbulence and electron density irregularities. Second and third order statistical analyses are applied: first, on time series associated with each type of measurement, then, on the two types. All results are presented for one typical case. Correlation functions estimated over the corresponding time intervals point out the existence of a, non-linear interaction between these fluctuations and electrostatic filed. Supported by National Natural Science Foundation of China Zhao Zhenyu; born in 1952, Ph. D.     

从科技统计指标看高校科技创新体系的发展

随着研究与开发(R＆D)投入的不断增加,高等学校专利申请数量和专利技术转让收入也是快速增长的势头,高校与产业的联系也越来越紧密。与此同时,在高校的科技创新体系中,科技开发投入所占比例却呈下降趋势,高校是否应着力于基础研究、应用研究等原创性科研是一个值得研究的问题。     

准最佳加权有序统计恒虚警检测器

为了提高恒虚警检测器在均匀背景中的检测性能及增强对干扰的鲁棒性,本文提出了一种准最佳加权有序统计恒虚警检测器,并应用了文献[3]提出的自动筛选技术。在Swerling Ⅰ型目标及瑞利杂皮假设下,本文推导出了它的P_(fa)、P_d及ADT的数学解析表达式。分析结果表明,它在均匀背景和杂波边缘背景中的性能均比TM获得了改善,同时对多目标也呈现了较好的鲁棒性。在特殊情况下,QBW退化为CMLD。     

从企业统计的责任与义务看企业统计改革的必要性

从企业统计的责任与义务出发,论述了企业统计改革的必要性,提出了企业统计改革的思路。     

Experimental study on photocount statistics of the ultraweak photon emission from some living organisms

The hypothesis that biophotons display a high degree of coherence was tested by measuring photocount statistics (PCS) of the ultraweak photon emission from three living organisms (cucumber seedling, mungbean seedling and soybean rhizobium bacteroids) with a high-sensitivity single-photon counter. For comparison, the same experiments were performed for laser beam, randomized laser beam, chemiluminescence from autoxidation of luminol and the dark counts of the equipment. Photocount distributions, close to Poissonian, were observed for the three tested biological systems but not for the pure chemiluminescence of luminol.     

统计模式识别算法的MATLAB语言实现

首先阐述了MATLAB语言的特点，然后列出了三种较为常见的统计模式识别算法，最后用MATLAB语言实现了3种统计模式识别算法，并且画出了它们的分界面图形。     

岭估计中的W—K估计量与广义相关系数

Weldsch-Kuch(1979)提出了一个度量数据对最小二乘估计影响大小的统计量。吴诗泳等讨论了这个统计量与相关系效的关系。本文提出了岭估计中的W-K统计量,建立了它与广义相关系数的关系。     

任意子气体的微扰物态方程与外磁场中任意子气体的第二维里系数

用费曼路径积分方法直接计算外磁场中理想任意子气体和相互作用任意子气体的第二维里系数。用量子统计的格林函数方法求出了费米点附近理想任意子气体的一阶微扰物态方程。     

浅析我院课堂教学质量评估的方法和评估中的若干问题

根据教育测量理论及数理统计理论,建立了对课堂教学质量评估数据处理方法的二次量化模型.讨论了评估过程中关于评估主客体间关系的可信度检验,二次量化模型的研究等问题,探索了建立我院教学质量保障系统,制定教学改革方案,检查教学效率的优化方法.     

从全国男子篮球俱乐部联赛总决赛技术统计析强弱队差距

通过对参加2002全国男子篮球俱乐部联赛总决赛的6支球队18场比赛的技术指标进行统计与分析，剖析强队与弱队之间的差距，反映我国甲级男篮在比赛中技术运用的现状．