Conditions for fourth order rotatability in K dimensions

In this paper, conditions for a set of points to form a rotatable design of order four have been worked out. These condi- tions form the basis for obtaining a set of rotatable designs of order four.     

SAR的海洋遥感探测技术综述

从研究SAR的海洋遥感探测重要性和基本特点出发,概述了SAR系统的海洋遥感探测技术所涉及的主要研究内容,针对海洋环境要素分布的随机性和时变性,研究了海面微波散射特性和SAR的海面成像机理,给出了研究结果;分析了SAR系统主要特点,提出研究包括系统的宽测绘带特性和雷达的弱信号获取、海面精确成像算法和时空相关性等方面;同时探讨了海洋目标检测的技术途径,以满足SAR系统海洋观测应用的需要.     

Minimization of model inadequacy when observations subject to shift in means and variances

In this article optimality of experimental design for fitting a lower-order polynomial to a higher order response function for the situation in which observations may be subject to shift in means as well as in variances is considered. It is found that Karson, Manson and Hader‘s (1969) optimum designs provide pro-tection, in some sense, against model inadequacies even when observations are subject to shift in means and variances.     

面向村落：纠纷解决中的乡土逻辑与法治偏差

现代司法在乡土社会的下沉面临多种力量的制约与阻隔，其下沉的速度、幅度与深度都可能因多方面的原因而呈现出差别迥异的格局。现代法治的下沉所借助的最大推动力并不是政府法治的宣传与推广，也不是司法体制改革的深入与拓展，而是依赖于现代传媒技术的普及等一系列因素。村落纠纷呈现出不同于市民社会纠纷的乡土特质，原因是多方面的。面对纠纷，纠纷主体所考虑的利益与选择的策略是多元的，由此形成了村民所追求的以生存空间的维护为核心的“正义观”。     

A simpler way of obtaining non-sIngularity conditions of rotatability

In response surface designs, it is not usually easy to handle the moment matrix X'X, especially for higher orders. This paper presents a method in which the moment matrix of a response surface of any order can be standardized, i.e., X'X splits into a diagonal matrix consisting of sub-matrices of lower order. This eases the calculation of the determinant and the inverse of X'X. The method has been illustrated with applications to second, third and fourth order response surfaces.     

Cutting Experimental Designs into Blocks

Most experimental material in agriculture and industry is heterogeneous in nature and therefore its statistical analysis benefits from blocking. Many experiments are restricted in time or space, and again blocking is useful. This paper adopts the idea of orthogonal blocking of Box & Hunter (1957) and applies it to optimal blocking designs. This approach is then compared with the determinant-based approach described in the literature for constructing block designs.     

SAW振荡器的相位噪声分析

声表面波振荡器是一种典型的反馈振荡器。根据Ｌｅｅｓｏｎ反馈振荡器相位噪声模型，分析了ＳＡＷ振荡器的相位噪声特点，特别是不同的ＳＡＷ反馈元件，分析结果表明不同的ＳＡＷ反馈元件通常有不同的相位噪声特点。还讨论了降低相位噪声电平，提高振荡器的谱密度的方法和途径     

用灰色模型预测碳钢表面合金化处理后的耐腐蚀性能

用灰色理论对经表面合金化处理后的碳钢进行耐腐蚀性能预测；就已完成的实际课题，运用灰色理论加以验证、探讨；结果表明，这一预测方法对金属材料耐腐蚀试验有指导意义，并具实用价值。     

北美自由贸易区争端解决机制：——一个独特的争端解决模式

NAFTA争端解决机制规定了争端解决的具体方法和规则,建立了全面实施NAFTA及争端解决的制度框架。该机制与WTO等其他争端解决机制相比,呈现出许多特点,但在运行中仍存在法律效力、各机制的协调等问题,需要改进。     

后现代话语掩盖下的现实关怀——王蒙小说《青狐》寓意浅探

长篇小说《青狐》的深层寓意,主要是对80年代“极左政治思想回潮”与体制改革滞后的批判。王蒙把一个有关社会历史进程的宏大叙事的题材,巧妙地用“青狐”的恋爱与成名的故事作为包装,使之转换成以“边缘化叙事”的面目出现。这部小说,不仅是王蒙晚年小说艺术更臻成熟的标志,而且,也是中国当代文学中,现实主义话语与后现代主义话语互相磨合而产生新变的一种迹象。