A new model and class of designs for mixture experiments with process variables

Experiments that involve the blending of several components are known as mixture experiments. In some mixture experiments, the response depends not only on the proportion of the mixture components, but also on the processing conditions, A new combined model is proposed which is based on Taylor series approximation and is intended to be a compromise between standard mixture models and standard response surface models. Cost and/or time constraints often limit the size of industrial experiments. With this in mind, we present a new class of designs that will accommodate the fitting of the new combined model.     

我国汇率制度的改革取向及政策思考

随着金融业的逐步开放,我国现行的汇率制度存在着许多问题。通过分析国际汇率制度的演化趋势,认为我国汇率制度的改革取向是实行浮动汇率制。由于目前我国经济自由化程度还处于较低水平,在短期内,最重要的改革就是要培育健全的外汇市场,扩大汇率的浮动范围,实行真正意义上的管理浮动汇率制。     

适当变换问题是解数学题的一个关键

数学问题是千变万化的 ,解决数学问题的方法也是多种多样的。如何选择正确的解题方法是数学教学法研究的中心课题之一。对数学问题 ,学生总是采用从原问题入手推出原问题结论的方法 ,但有些数学问题 ,采用这种方法难以解决 ,笔者认为适当变换问题是解题的关键 ,本文就变换问题时应遵循的几点原则予以浅述     

民办本科高校的人才培养目标与育人模式

我国高等教育已进入“大众化”发展新阶段，民办本科高校应以培养高素质应用型人才为目标，构建“三统一”育人模式：本科学历教育与高职教育统一，知识教育与能力教育统一，做人教育与做事教育统一，并以学分制具体实施。     

Semi‐Parametric Models for the Multivariate Tail Dependence Function – the Asymptotically Dependent Case

Abstract. In general, the risk of joint extreme outcomes in financial markets can be expressed as a function of the tail dependence function of a high‐dimensional vector after standardizing marginals. Hence, it is of importance to model and estimate tail dependence functions. Even for moderate dimension, non‐parametrically estimating a tail dependence function is very inefficient and fitting a parametric model to tail dependence functions is not robust. In this paper, we propose a semi‐parametric model for (asymptotically dependent) tail dependence functions via an elliptical copula. Under this model assumption, we propose a novel estimator for the tail dependence function, which proves favourable compared to the empirical tail dependence function estimator, both theoretically and empirically.     

增强高等学校教工党支部工作实效性的途径

党支部是学校党组织的基础，是校党委联系广大师生员工的桥梁和纽带，是学校实现和加强党的领导的重要条件。加强教工党支部建设，是保证党对高等教育坚强领导的重要举措，是坚持社会主义办学方向、培养社会主义事业合格建设者与可靠接班人的必然要求，是维护高等学校稳定、构建和谐校园的根本保障。这就需要通过科学设置党支部、精选党支部书记、提供较为充足的经费、创新组织生活会模式、搭建党建工作平台、创造和谐党内环境、开展党内目标考核评估等手段，来增强高等学校教工党支部工作的实效性。     

Has the Youth Labor Market in Japan Changed? An Event History Analysis Approach

Abstract: This paper examines whether the Japanese youth labor market has become more unstable, particularly since the 1990s. To address this problem, I suggest that we consider the transition rate of job exit to be the benchmark of instability in the labor market and focus on workers' career histories until they reach the age of 34 years. This paper presents six hypotheses that explain the instability of the youth labor market as follows: the total increase in the job-exit transition rate, the higher risk of job exit for provisional workers, the increase in the number of provisional workers, the increasing transition rate for provisional workers and stable regular workers, the impact of firm size, and the impact of the collapse of the bubble economy. I present the summary statistics of job exit rates and the results of the Cox partial likelihood estimation models. A conspicuous phenomenon of the 1990s entailed an increasing number of provisional workers who ran a higher risk of job exits compared to regular workers. However, the job exit transition rates are generally stable. Moreover, the transition rates for regular female workers have decreased since the 1980s due to the increasing realization of gender equality in society. Although partial likelihood estimation states that firm size and the type of officer concerned (public/private) had significant effects on the transition rates, their effect did not intensify after the collapse of the bubble economy. In sum, the evidence that the Japanese youth labor market changed in the 1990s is limited.     

论综合动态数据库的建立与应用

利用周期性普查数据与经常性调查数据建立的综合动态数据库具有数据全面、质量较高等优点。针对该数据库数据不完整、可能是不等距的时间序列数据等特点，提出基于周期性普查数据对经常性调查数据修正的时序建模与应用的思路以及周期性普查指标的数据插补方法与应用思想，通过描述综合动态数据库综合运用的流程，说明该数据库的综合运用实质是一个逐步完善数据库的过程。     

关于最优旅行商路线问题的条件

证明了非完全留的最小Hamilton回路为最优旅行商路线的条件是：除了满足广义三角不等式外，还必须满足正则收缩性．     

E~n中n维Milosevic不等式的加强

文章研究了n维欧氏空间En中Milosevic不等式,通过算术平均数与几何平均数的组合,将n维Milosevic不等式进行了推广,在研究的过程中,采用了几何不等式理论与解析的方法,将已有的结果进行了加强.