Rank correlation methods for missing data

The subject of rank correlation has had a rich history. It has been used in numerous applications in tests for trend and for independence. However, little has been said about how to define rank correlation when the data are incomplete. The practice has often been to ignore missing observations and to define rank correlation for the smaller complete record. We propose a new class of measures of rank correlation which are based on a notion of distance between incomplete rankings. There is the potential for a significant increase in efficiency over the approach which ignores missing observations as demonstrated by a specific case.     

The dilation phenomenon in robust Bayesian inference

Upper and lower probabilities may become uniformly less precise after conditioning. We call this dilation. We review some results about dilation, present some examples and explore the effect of Bayesian updating. Also, we show a connection between dilation and nonconglomerability. Finally, we consider the implications of this phenomenon.     

Asymptotic distribution of data-driven smoothers in density and regression estimation under dependence

We consider automatic data-driven density, regression and autoregression estimates, based on any random bandwidth selector h/_T. We show that in a first-order asymptotic approximation they behave as well as the related estimates obtained with the “optimal” bandwidth h_T as long as h_T/h_T → 1 in probability. The results are obtained for dependent observations; some of them are also new for independent observations.     

论东亚地区自由贸易协定的兴起

最近几年，东亚地区兴起一股自由贸易协定热潮，这股热潮的特点是，东亚地区自由贸易协定主要由小经济体倡导，并且在东亚和亚太范围内同时进行，这一热潮兴起的基本原因是20世纪90年代东亚经济体之间贸易和投资关系的快速发展，东亚国家（地区）对自由贸易协定态度的转变和认识的提高，东亚区域内外竞争的压力，以及亚太经合组织的停滞不前等，面对这股热潮，中国应该正确估计自己的实力，与时俱进；抓住机遇，扎实走好第一步，并要具备前瞻性眼光。     

ΔG的求法综论

本文对ΔＧ的计算按过程性质．物理变化分为等温过程和非等温过程；化学变化分为等温等压过程和非等温等压过程进行系统分析论述．同时又对实验程ΔＧ的求法也进行了简要的说明。     

基于Pro/E的渐开线直齿圆柱齿轮三维造型设计

根据渐开线的形成原理,给出了渐开线齿形在笛卡尔坐标系和圆柱坐标系中的参数方程。最后详细介绍了在Pro/Engineer wildfire环境下,绘制精确渐开线直齿圆柱齿轮的三维造型方法。     

现行联合演算的判定标准不可靠的理由

希尔柏脱和阿克曼试图导出一个普遍可行的判定标准 ,判定一联合演算公式是否永真。克劳斯用这个标准来论证传统推论式并排除不正确的推理式。但是 ,由希尔柏脱和阿克曼提出并经克劳斯转述的所谓联合演算的“判定标准”并不是一个十分可靠的标准。联合演算的最特殊的方面是 ,其演算不可能在单一的层次上进行 ,必须在两个层次上同时进行。第一个层次是命题逻辑的层次 ,第二个层次是谓词逻辑或类逻辑的层次。希尔柏脱和阿克曼试图在笫一个层次上解决问题 ,克劳斯则承袭其思路 ,总是想把一联合演算的公式化为使其竖号在公式最外面的形式 ,然后在判定过程中脱去竖号。忽视联合演算的两个层次 ,正是现行联合演算出现混乱和错误的根源     

空间球状区域上的关联函数

本文在空间球状区域上给出了距与位值的概念，并建立了三元关联函数，推广了已有的结果。     

轻触式数字密码锁设计

本文介绍由R-S锁存器组成的轻触式数字密码锁的电路设计及工作原理．