专业性别隔离的产生过程及其影响因素

目前在教育领域中仍然存在着性别不平等，专业性别隔离就是其表现之一。运用定量研究，证实专业性别隔离的存在，并把中等教育和高等教育连接，从教育过程中探究专业性别隔离的产生和强化，从家庭、学校及专业环境考察影响因素，提出消除关于专业的性别刻板印象及鼓励女生在专业和职业发展的具体建议，为以后进行更为深入的分析提供探索性研究。     

完全模糊线性系统的非正模糊近似解

针对完全模糊线性系统A~x=~b,其中A~,~x和b~分别为模糊数矩阵和模糊数向量,利用广义LR-模糊数及其近似算法,讨论了完全模糊线性系统的非正模糊近似解.     

传媒权力生成——另一种考察视阈

传媒权力的生成不仅呈现出多元复杂的生态景象,而且表现出动态变化的生长逻辑.当传媒充当意识形态国家机器时,传媒的权力表征为对国家暴力机器的依附,并且释放出无所不能的力量.当传媒作为社会公器时,传媒凭借其对公共舆论形成与走向的掌控,日益显示出无所不能的霸权.当传媒充当现代社会人们信息化生存的依赖时,传媒由于控制了受众的看法,导演了受众的意见,从而占有了大众或者获得了支配大众的权力.     

NONPARAMETRIC STATISTICAL ANALYSIS OF DISCRETE-TIME QUEUES,WITH APPLICATIONS TO ATM TELETRAFFIC DATA

In this paper nonparametric statistical analysis of a discrete-time queueing system is considered. Estimation of performance measures of the system is studied. The attention is first focused on the estimation of the waiting time probability distribution, as well as of functionals of interest (mean waiting time, variance of the waiting time, etc.). The approach is based on the estimation of the corresponding generating function. Attention is paid to the estimation of the probability of a “long delay”, in view of its importance for applications. Results for possibly unstable models are also obtained. Finally, an application to ATM teletraffic data is provided.     

On the differences of two generalized negative binomial variates

The generalized negative binomial (GNB) distribution was defined by Jain and Consul (SIAM J. Appl. Math., 21 (1971)) and was obtained as a particular family of Lagrangian distributions by Consul and Shenton (SIAM J. Appl. Math., 23 (1973)). Consul and Shenton also gave the probability generating function (p.g.f.) and proved many properties of the GNBD. Consul and Gupta (SIAM J. Appl. Math., 39 (1980)) proved that the parameter β must be either zero or 1≤ β ≤ θ^-1 for the GNBD to be a true probability distribution and proved some other properties. Numerous applications and properties of this model have been studied by various researchers. Considering two independent GNB variates X and Y, with parameters (m,β,θ) and (n,β,θ) respectively, the probability distribuition of D = Y-X and its p.g.f. and cumulant generating function have been obtained. A recurrence relation between the cumulants has been established and the first four cumulants, β₁ and β₂ have been derived. Also some moments of the absolute difference |Y-X| have been obtained.     

关于“杨辉三角形的推广”一文的注记

本文用图论方法给出文献[1]中提出的广义杨辉三角形的通解公式:(1 t t~2 … t~k)~n=(?)C_(i 101~(t~i))~(n)     

Time series with discrete semistable marginals

We propose several stationary integer-valued first-order autoregressive [INAR(1)] models with discrete semistable marginals and related distributions. The corresponding first-order moving average processes are also presented.     

The Balakrishnan skew–normal density

We consider a generalization of the Azzalini skew–normal distribution. We denote this distribution by SNB _n (λ). Some properties of SNB _n (λ) are studied. Its moment generating function is derived, and the bivariate case of SNB _n (λ) is introduced. Finally, we illustrate a numerical example and we present an application for order statistics.     

近似格式的统一形式

将有限差分和有限元两种近似方法用统一的公式表示,使不同近似格式有了一个统一形式.     

Nuclear Safety in Ontario: A Critical Review of Quantitative Analyses

In this article quantitative analyses of CANDU nuclear generating stations are evaluated using an explicit set of criteria derived from a decision-analytic framework. A systematic search was made for relevant analyses, including both risk assessments and economic analyses. Only a small number of scientifically sound quantitative analyses that are being used to make decisions about specific safety measures or projects were located. The availability of scientifically sound quantitative data for making major energy policy decisions is even more limited, and what is available has major shortcomings. The province of Ontario is now heavily dependent on nuclear energy. Given the uncertainties surrounding the health, environmental, economic, and social consequences of nuclear energy, there is a need to assemble the information that is available within a comprehensive decision-making framework, and to decide future energy policies for the province in a public forum from a societal perspective.