功能点分析法的研究和改进

根据项目实践中的经验,将当前流行的软件规模度量方法——功能点分析法进行了改进。针对不同业务需求稳定性的差异,考虑到了需求在项目过程中的变化因素,在功能点分析法的每个功能点接口中分别加上一个需求稳定性的调整系数,将原有功能点逐个进行稳定性调节。本文通过一个实际的例子分析了改进前后的功能点数的变化情况,实验数据证明改进后的功能点数在项目推进过程中平稳的被完成,避免了传统的功能点数在项目后期出现较大的震荡。     

Sequential estimation for a family of counting processes in the nuisance parameter case

The paper deals with the problem of sequential estimation for stochastic processes in the presence of a nuisance parameter. Using the approach to estimation through estimating equations, optimum estimating functions based on a random observation time are investigated in some models for processes appearing in reliability systems theory.     

SiZer Map for inference with additive models

Sizer Map is proposed as a graphical tool for assistance in nonparametric additive regression testing problems. Four problems have been analyzed by using SiZer Map: testing for additivity, testing the components significance, testing parametric models for the components and testing for interactions. The simplicity and flexibility of SiZer Map for our purposes are highlighted from the performed empirical study with several real datasets. With these data, we compare the conclusions derived from SiZer analysis with the global results derived from standard tests, previously proposed in the literature.     

Allan方差公式的扩充与修正

Allan方差是评定振荡器频率随机波动的一个特征值．本文对频域参数α作进一步扩充，推得一组Allan方差表达式，并在有限频域下提出修正，导出了在有限频域[fa，fb]的Allan方差扩充公式．     

Modelling cell generation times by using the tempered stable distribution

Summary.  We show that the family of tempered stable distributions has considerable potential for modelling cell generation time data. Several real examples illustrate how these distributions can improve on currently assumed models, including the gamma and inverse Gaussian distributions which arise as special cases. Our applications concentrate on the generation times of oligodendrocyte progenitor cells and the yeast Saccharomyces cerevisiae . Numerical inversion of the Laplace transform of the probability density function provides fast and accurate approximations to the tempered stable density, for which no closed form generally exists. We also show how the asymptotic population growth rate is easily calculated under a tempered stable model.     

三相异步电动机任意负载下参数计算

提出了异步电机在任意负载下十种参数的计算公式，对分析、研究电机的运行特性提供了理论基础，既经济实用又简便准确，并举例说明。     

On expected volumes of multidimensional confidence sets associated with the usual and adjusted likelihoods

We consider a general multiparameter set-up, where both the interest and the nuisance parameters are possibly vector valued. We derive an explicit higher order asymptotic formula to compare the expected volumes of confidence sets given by likelihood ratio statistics arising from the usual profile likelihood and various adjustments thereof. Our general framework also allows us to include highest posterior density regions, with approximate frequentist validity, in the study. The fact that our interest parameter is possibly vector valued complicates the derivation and warrants the development of special tools and techniques.     

计算机数控编程“变量”参数的应用

在机械加工中应用数控进行有效控制的变量参数是客观存在的。如何在计算机数控编程中对同一类型设定不同的变量是提高加工效率、减少编程程序的一项关键技术。介绍几种应用计算机数控编程类型，供不同类型的变量参数在计算机数控编程中借鉴。     

从“意义参数”的角度评新版《呼啸山庄》

文章试图在文学翻译批评中引入“意义参数”的概念,并结合《呼啸山庄》的最新中译本从语境、情感、形象、风格、语法五个意义参数方面对其做简要评析。目的在于明确文学翻译中单纯的语言上的忠实并不意味着一定能产生最好的译本,非文本因素同样起着不可忽视的作用。     

辽宁省就业和经济增长关系的时变参数模型

在讨论就业和经济增长之间关系的理论基础上,分析辽宁省就业弹性偏低和奥肯定律发生重大变异的机理,然后指出随时间变化的就业弹性系数才是分析辽宁省就业和经济增长之间关系的重要前提,最后构建辽宁省就业与经济增长之间关系的时变参数模型。