奇摄动问题解的多层现象

讨论了一类二阶微分方程奇摄动两点边值问题，首先求出问题的外部解，然后再利用伸长变量，构造了对应问题的内部解，最后利用匹配原则得到了原问题解的渐近式，并且指出了该解的展开式具有多层边界现象。     

非线性奇摄动椭圆型方程问题

研究了一类具有非线性椭圆型方程奇摄动问题，在适当的条件下，利用微分不等式理论，讨论了当退化问题具有两个相交解时，原边值问题解的渐近性态。     

多解物理问题归类解析

所谓多解物理问题是指问题的解不是唯一的，而是有多种可能值．此类问题的物理条件一般具有隐蔽性，要求学生全方面、准确地分析物理现象和过程，防止出现漏解．     

具有反馈控制的Logistic扩散系统周期解的存在与稳定

利用上下解，Brouwer不动点原理及Lyapunov泛函方法，讨论了一类具有反馈控制的Logistic扩散系统的周期解问题，获得了周期解存在且稳定的判别条件。     

波的多解问题分析

机械振动和机械波的最大特点是具有重复性，机械振动在时间上具有重复性，机械波在时间和空间上均具有重复性．由于波在时间及空间上具有重复性，故波的问题往往会引起多解．波的多解问题，是《机械振动和机械波》一章中高考的热点问题，这类问题要求学生有较高的空间想象力和动态分析能力，故学生在解决这类问题时往往感到比较困难．     

两类积分－微分方程有限元方法的超收敛分析

本文讨论抛物型及双典型积分－微分方程的初边值问题，证明如果相应的椭圆问题的有限元解具有超收敛性，那么这两类积分－微分方程的有限元解也具有超收敛性。     

具有转向点的奇摄动问题的渐近解

用Langer变换研究了一类具有转向点的奇摄动问题εy″ 2axy′-αβy=0，求得了该问题的渐近解，从而给出了这类问题解的一般性结论．     

线性规划问题的四种求解方法

线性规划问题是现实生活中一类重要的应用问题，它常用来研究物资调运、生产安排、下料等工作的资源优化配制问题，寻求线性规划问题的最优解具有十分重要的现实意义．现介绍几种求解线性规划问题的最优解的策略。     

一类抛物型方程的摄动问题

讨论了一类具有奇性右端项的抛物型方程的初边值问题的摄动问题，考察了摄动问题广义解的存在性及其极限性态，证明了当ε趋于零时，摄动问题的解在一定意义下收敛于原问题的解．     

含参数最优化问题的解的通有唯一性

本文研究了含参数最优化问题解的通有唯一性。针对目标函数空间，采用了函数的上方图形拓扑，在目标函数仅仅关于第一变元下半连续的条件下，我们得出含参数最优化问题的解具有通有唯一性。     

基于极大模糊熵原理的模糊推理三Ⅰ约束算法

给出了FMP,FMT问题的模糊熵三Ⅰ约束原则,讨论了FMP,FMT问题的模糊熵三Ⅰ约束解的存在性条件,分别给出了几个常见蕴涵算子的FMP问题与FMT问题的模糊熵三Ⅰ约束算法的计算公式,进一步将问题一般化;给出了FMP问题与FMT问题的模糊熵α-三Ⅰ约束解的存在性条件,并得到了基于这些蕴涵算子的模糊熵α-三Ⅰ约束算法相应的计算公式。     

Reactive attachment disorder in looked‐after children

The great majority of children living in foster or residential care have been abused and neglected. Mental health problems are common and the nature of these problems may be rooted in early attachment relationships. The carers of 82 children in care in Scotland and 125 children from local schools completed questionnaires on mental health problems including Reactive Attachment Disorder. More than half (53%) of the children in care fulfilled criteria for mental health problems compared with 13% of the control group, and children living in care scored significantly higher for conduct problems, emotional problems (anxiety and depression), hyperactivity, problems with peer relations and Reactive Attachment Disorder. This has important implications for service development for this vulnerable group of children.     

Predicting Behavior Problems in Children with Epilepsy: Child Factors, Disease Factors, Family Stress, and Child-Mother Interaction

This study examines the relative role of parent-child relationships, family stress, and disease factors in predicting behavior problems in children with epilepsy. It extends existing literature on parent-child relationships and behavior problems by examining children with biological risk. Child-mother interaction was observed for 51 children with epilepsy ages 7–13 years and related to teacher- and parent-reported behavior problems. Child's self-reliance correlated with parent-reported problems; expression of affect related to teacher-reported externalizing problems. A child self-reliance factor accounted for behavior problems after partialing age, gender, IQ, epilepsy variables, and family stress. The term child gender × quality of mother-child interaction predicted teacher-reported externalizing problems, with mother-child interaction correlated with behavior problems for boys. Child-parent relationships predict the development of behavior problems over and above the influence of disease-related factors, even for children at considerable biological risk.     

Children’s Responses to Interparental Conflict: A Meta‐Analysis of Their Associations With Child Adjustment

A meta‐analysis examined the relations between children’s adjustment and children’s cognitive, affective, behavioral, and physiological responses to interparental conflict. Studies included children between 5 and 19 years of age. Moderate effect sizes were found for the associations between cognitions and internalizing and externalizing behavior problems and self‐esteem problems, negative affect and behavioral responses and internalizing behavior problems, and behavioral responses and self‐esteem problems. Small to moderate effect sizes were found for the associations between cognitions and relational problems, negative affect and behavioral responses and externalizing behavior problems, and physiological reactions and internalizing and externalizing behavior problems. Effect sizes were, with 1 exception, larger for internalizing than for externalizing behavior problems. Age significantly moderated the majority of effect sizes.     

Banach空间中的平衡问题

提出了Banach空间中的平衡问题,并给出了求解该问题的迭代算法及算法的收敛性分析。该算法同样适用于变分不等式和互补问题,推广了最新文献[4.7.8]中的相应结果。     

全球问题和德育内容的更新

全球问题是在 2 0世纪出现的 ,它包括自然环境问题、社会问题和人自身的问题等。全球问题的出现要求人们更新德育内容 ,进行环境道德教育、全球意识教育、爱国主义教育和生命关怀教育。     

Adolescent exposure to violence and adult physical and mental health problems

Evidence on the relationship of adolescent exposure to violence (AEV) with adult physical and mental health problems is limited, with studies often focusing on earlier childhood rather than adolescence, and also on short term rather than long term outcomes. Information specifically on the relationship of AEV to seeking help for mental health problems in adulthood from either formal sources such as mental health professionals or informal sources such as friends and clergy is even more difficult to find. The present study investigates how adolescent exposure to violence (AEV), in the form of parental physical abuse, witnessing parental violence, and exposure to violence in the neighborhood, are related to self-reported adult physical problems and seeking formal or informal assistance with mental health, controlling for more general adolescent violent victimization and for self-reports and parent reports of mental health problems in adolescence. This study adds to the literature on AEV and adult physical problems, and provides a rare look at the relationship of AEV to adult help-seeking for mental health problems. The results suggest that AEV is associated with mental health problems in adolescence for both females and males, that for females AEV is related to physical problems and to seeking help for mental health problems in adulthood, but for males the only significant relationship involves inconsistent reports of witnessing parental violence and adult physical problems.     

Focus on the Representation of Problem Types in Intended Curriculum: A Comparison of Selected Mathematics Textbooks from Mainland China and the United States

This study compared how selected mathematics textbooks from Mainland China and the United States at the lower secondary grade level represent various types of problems for classroom teaching and learning. The examination of problems was carried out based on the classifications of problem types established in the study, including routine problems versus non-routine problems, open-ended problems versus close-ended problems, traditional problems versus non-traditional problems, and application problems versus non-application problems, among others. Both the similarities and differences in the representation of problems in the selected textbooks were analyzed. The results were used to explore the possible influences of those textbooks on students’ different performances in mathematics, as revealed in cross-national comparisons. Discussions about how to improve the representation of problems in mathematics textbooks were provided at the end of the study.     

农民工保障状况及对策研究

农民工保障问题与我国的社会制度、法律和教育背景有着紧密联系。在社会主义现阶段,只有通过合理的途径正确处理好由此引起的相关问题,才能够促进经济的快速发展和社会的更加稳定。本文主要从农民工保障问题的背景和现状进行了分析,并探索了解决的途径。     

我国基础教育办学体制改革问题及其症结剖析

近年来,我国基础教育办学体制改革存在着诸多的问题。文章试图从以下三方面来思考我国基础教育办学体制改革问题。首先,分析基础教育办学体制改革存在的问题;其次,揭示基础教育办学体制改革问题的症结;最后,探讨我国基础教育办学体制改革问题的解决对策。