两个随机变量的独立性和相关性之比较

从随机变量的独立性和相关性概念出发,运用反例和定理的形式详细探讨二者的区别和联系.     

具体应用中的矛盾分析法之种种

矛盾分析法在科学认识中的具体应用,可作多侧面的展开,形成多方面的更为具体的科学方法。这些具体科学方法可概括为,矛盾的定性分析法、矛盾的定位分析法、矛盾的定点分析法、矛盾的定量分析法、矛盾的定势分析法、矛盾的历史过程分析法、矛盾的逻辑过程分析法、矛盾的系统分析法、矛盾的对立面互补分析法等等.它们均体现哲学方法与具体科学方法的一致性。     

A study of simulated annealing and a revised cascade algorithm for image reconstruction

We describe an image reconstruction problem and the computational difficulties arising in determining the maximum a posteriori (MAP) estimate. Two algorithms for tackling the problem, iterated conditional modes (ICM) and simulated annealing, are usually applied pixel by pixel. The performance of this strategy can be poor, particularly for heavily degraded images, and as a potential improvement Jubb and Jennison (1991) suggest the cascade algorithm in which ICM is initially applied to coarser images formed by blocking squares of pixels. In this paper we attempt to resolve certain criticisms of cascade and present a version of the algorithm extended in definition and implementation. As an illustration we apply our new method to a synthetic aperture radar (SAR) image. We also carry out a study of simulated annealing, with and without cascade, applied to a more tractable minimization problem from which we gain insight into the properties of cascade algorithms.     

光纤扭转对循环延迟线偏振控制系统特性影响的研究

借助模式耦合理论和矩阵光学的知识,对引入光纤扭转机构后的延迟线偏振控制系统的偏振转换特性进行了分析,推导出了描述该系统偏振特性的琼斯矩阵,得到了光纤扭转对系统偏振特性影响的理论模型。     

分析Chiral分层媒质特性的一般方法(英文)

提出了一套系统方法用于求解任意导体片位于界面的Chiral分层媒质的谐振频率,衰减因子和电磁场分布。文中的分析是在Fourier变换域的并矢格林函数和矩阵分析的基础上来进行的,给出的公式的最大价值在于它提供了求解Chiral分层媒质问题的方法论。     

蜕变与再生——菲律宾洪水神话的宏观结构

菲律宾洪水神话异文的具体情节不尽相同,但其隐含的基本叙事结构却是共同的,都可以划分为开端、中介、结尾三个发展阶段,于是可以用一个统一的情节结构纲目来归纳各异文中的情节发展。它们在宏观叙事结构上具有“蜕变型”的统一范式,意味着由旧秩序向新秩序的蜕变。     

利用风险投资促进高校科技成果转化探讨

风险投资可以有效弥补高校科技成果转化中的资金缺口,也可提高高校科技企业后续融资能力。针对目前我国高校科技成果转化中风险投资参与度偏低的现状,文章在分析风险投资对促进高校科技成果的必要性基础上,研究了影响风险投资资金投资于高校科技成果的主要障碍因素,并提出了相应的对策。     

绵阳城区街道用字状况的调查分析

通过对绵阳城区街道用字状况的抽样调查,发现绵阳城区街道用字仍存在着一些不规范的现象。有关部门应加强宣传教育,提高人们的用字规范意识;同时加强监督管理,切实提高绵阳城区街道用字的规范程度。     

Doing Gender unto the Other: Fiction as a Mode of Studying Gender Discrimination in Organizations

Although ‘doing gender’ has been recently defined as an accomplishment, an element of social practice, this understanding of the concept needs to be extended to coercive action such as subtle workplace discrimination. Even though great effort has been invested in revealing the dynamic of such social practices, the researcher's task is not easy for a variety of reasons. This type of study is difficult to conduct by following traditional research design and many alternative approaches have been tried. This article presents the possibility of using fiction as one possible and relatively unexploited venue of research.     

自由心证制度模式考察--一种比较法的分析

自由心证制度以证据的自由评价模式为核心,同时包括所有规制自由评价的规则和制度.两大法系近代证据制度都以证据的自由评价模式为核心,采用的都是自由心证制度,但是由于事实裁判者、诉讼机制、审理形式以及法律传统等诸方面的差异,两者在规制自由评价的措施上迥然有异,形成自由心证制度的两种模式.