学习成绩采用标准绩点制之探讨

绩点制是我国高校学籍管理改革的发展方向,文章在介绍学习成绩绩点计算方法的基础上,分析了绩点制存在的不足之处,并提出了标准绩点的概念,即采用班级相对排名计算绩点,从而可以避免不同课程的不可比性或一门课程成绩分布不合理时所带来的不可比性,使得绩点计算更加科学公正。     

关于幂等矩阵秩关系式的一个证明

利用构作可逆矩阵的方法,证明了文献[2,3]中关于幂等矩阵秩的部分关系式。     

希斯克厉夫的性格及其成因分析

希斯克厉夫是《呼啸山庄》中的主人公,许多人都把他看成一个魔鬼,十恶不赦,而使他变成魔鬼的根本原因是凯瑟琳对爱情的背叛。笔者认为,希斯克厉夫虽是一个变态的魔鬼,但他的性格形成有其阶级压迫和金钱门第影响的原因,仍然是一个值得同情的人物,而凯瑟琳只是点燃他仇恨之火的导火线。     

保点谱反乘法映射

证明了B（X）到B（Y）上保一秩算于点谱的反乘法映射具有形式（T）=AT*A－1．     

品第与流别——钟嵘诗歌美学史观的独特视角

品第和流别是《诗品》的独特体例,也是钟嵘诗歌美学史观的视角。流别批评的出现,除受到刘歆《七略》影响外,还与当时谱学兴盛有一定关系。通过品第和流别,钟嵘确立了自然真美、风力与丹采相结合、滋味的美学观以及《诗经》、《楚辞》在诗歌史上的重要地位。     

Dynamic Decision Making when Risk Perception Depends on Past Experience

The aim of the article is to propose a preferences representation under risk where risk perception can be past experience dependent. A first step consists in considering a one-period decision problem where individual preferences are no more defined only on decisions but on pairs (decision, past experience). The obtained criterion is used in the construction of a dynamic choice model under risk. The article ends with an illustrative example concerning insurance demand. It appears that our model allows to explain modifications in the insurance demand behavior over time observed on the insurance markets for catastrophic risk and difficult to justify with standard models.     

Choosing appropriate covariance matrices in a nonparametric analysis of factorials in block designs

The standard nonparametric, rank-based approach to the analysis of dependent data from factorial designs is based on an estimated unstructured (UN) variance–covariance matrix, but the large number of variance–covariance terms in many designs can seriously affect test performance. In a simulation study for a factorial arranged in blocks, we compared estimates of type-I error probability and power based on the UN structure with the estimates obtained with a more parsimonious heterogeneous-compound-symmetry structure (CSH). Although tests based on the UN structure were anti-conservative with small number of factor levels, especially with four or six blocks, they became conservative at higher number of factor levels. Tests based on the CSH structure were anti-conservative, and results did not depend on the number of factor levels. When both tests were anti-conservative, tests based on the CSH structure were less so. Although use of the CSH structure is concluded to be more suitable than use of the UN structure for the small number of blocks typical in agricultural experiments, results suggest that further improvement of test statistics is needed for such situations.     

Some partially sequential nonparametric tests for detecting linear trend

In the present study, we develop two nonparametric partially sequential tests for detecting possible presence of linear trend among the incoming series of observations. We assume that a sample of fixed size is available a priori from some unknown univariate continuous population and there is no sign of trend among these historical observations. Our proposed tests can be viewed as the sequential type tests for monitoring structural changes. We use partial sequential sampling schemes based on usual ranks as well as on sequential ranks. We provide detailed discussion on asymptotic studies related to the proposed tests. We compare the two tests under various situations. We also present some numerical results based on simulation studies. Proposed tests are extremely important in profit making in volatile market through Margin Trading. We illustrate the mechanism with a detailed analysis of a stock price data.     

论西方社会的中产阶级--文化资本理论框架内的一种解读

作为文化能力、文化习性、文化权力、文化产品在内的文化资源的总和,文化资本的积累具有独特主体性、持续过程性和潜在风险性等特征.西方社会中产阶级的形成离不开文化资本的积累.市场、权力和教育三个不同层面的积累机制决定了中产阶级成员内部存在的文化资本数量、品位、消费偏好等差异.     

变法的前夜：秦国墨学与商鞅变法的社会史考察

从献公时期秦国的社会制度和社会需要的角度再次审视商鞅变法,一方面对其制度的变革进行纵向的溯源探究,另一方面对其制度所彰显的思想进行深入分析。我们关注到了一个被学界所忽略的重要因素——秦墨学。献公时期,秦墨者实施了建设具备军事职能的县和什伍连坐制度,这两项制度对后来商鞅变法措施中的郡县制度和什伍连坐制度的成功起到了基础性作用,秦墨学为商鞅变法的成功提供了制度上的影响和基础性作用。