大学生消费水平和消费结构分析

本文根据在常熟理工学院随机抽样得到的样本数据,利用计量经济学方法,对大学生的消费水平、消费结构以及影响因素进行了定量分析和研究。由此得出的结论是,当代大学生的消费基本上是现实、理性的,但是也存在消费水平偏高且消费结构不合理等问题。     

The madelung constant of the sodium chloride crystal lattice

An analysis of the Madelung constant of the sodium chloride crystal lattice has been made, in an effort to supplement information available in undergraduate textbooks. A method of approximation of the constant using the personal computer is presented. An erratum to this article is available at .     

The relations among child negative interactive behavior,child temperament,and maternal behavior

Negative behavior toward the mother during toddlerhood might be a marker of increased risk for maladjustment. The aim of the present study was to examine the possible antecedents of toddler boys’ negative behavior observed in interaction with the mother: child temperament, and maternal behavior toward the child. We studied the moderating and mediating role of two dimensions of maternal behavior, sensitivity and intrusiveness, in the relationship between children's temperamental traits (frustration, soothability and activity level), on the one hand, and child negative behavior, on the other hand. The sample consisted of 112 mother–son dyads observed when the child was 17 months old. A temperament questionnaire was completed by the mothers. Child negative interactive behavior, maternal sensitivity and intrusiveness were observed at home during a 13-min play session. Maternal sensitivity was negatively related to child negative interactive behavior regardless of child temperament. Maternal intrusiveness, however, moderated the relation between activity level and negative behavior, i.e., children with high activity level showed higher levels of negative behavior especially when the mother was highly intrusive. Furthermore, maternal intrusiveness acted as a mediator in the relation between soothability and negative behavior, i.e., low soothability was linked to higher maternal intrusiveness, which in turn was associated with higher negative behavior.     

关于一类拟线性椭圆方程正解的存在性问题

讨论了拟线性椭圆方程-u″＋u-k（u^2）″u=f（x,u）,x∈R（＊）,其中k〉0是常数,f（x,u）是一个关于“的超线性和次临界函数,且f（x,0）=0．在函数f（x,u）满足某些条件下,通过变分法证明了方程（＊）至少存在一个正解．     

一类交换半群在求解二元二次不定方程中的应用

建立了一类新的交换半群,对《一个交换半群的元素的表示形式》、《一个交换半群的推广与应用》两文中半群的元素表示形式和结果进行了推广与加强.并且利用其结果得到了几类二元二次不定方程的整数解表达式.     

注重能力培养,构建工科基础化学实验教学平台

论述了学校在创建省级基础化学实验教学中心过程中,面向工业化注重能力培养,构建工科基础化学实验教学平台,在实验队伍建设、教学方法和特色建设方面的实践经验。     

数学教师教法选择与学生反应的差异性实验研究

数学教师选择教法与学生对于数学处理的认知具有根本的不同,当前教师的观念影响学生在教学中的主体地位,数学教师选择教法所依据的环境要求与学生选择教法有着明显的差异.     

不定方程X^21＋X^22＋…＋X^2κ=ω的系列解研究

采用归纳的方法对不定方程X^21＋X^22＋…＋X^2κ=ω所包含的一类方程X^21＋X^22＋…＋X^2κ=z^2（k≥2）及另一类方程X^21＋X^22=z^n（n≥2）推导出系列解的模式。这些解有本原解,也有非本原解。     

从SCI考量“诺贝尔奖”与中国的距离

学术研究能量一般包括研究能力和影响力两个方面。从近几年SCI收录我国科技论文获得一系列重要的科学指标,即从1990年的世界排名15位跃居2004年的第5位。对中国学术研究能量的一些重要指标进行了定量化的国际比较研究,从而发现了一些重要的发展趋势,从这些趋势看,中国科学家要获得＂诺贝尔奖＂还有很长的路要走。