Parental Work Demands and the Frequency of Child‐Related Routine and Interactive Activities

This study examined whether the frequency of child‐related activities was associated with parents' own work demands and those of their partners. In addition to parental paid working hours, we considered the parents' organizational culture and experienced job insecurity. Moreover, we differentiated between child‐related routine and interactive activities. Using self‐collected data on 639 Dutch couples with children, we found that paid working hours were consistently associated with a lower frequency of child‐related activities. Fathers generally responded more strongly to their own and their partner's work demands than mothers. For fathers, both their own and their partner's work demands were more strongly associated with routine than with interactive activities. Mothers did not differentiate between these activities, however.     

Economic Crisis and Marital Problems in Turkey: Testing the Family Stress Model

This paper applied the family stress model to the case of Turkey in the wake of the 2001 economic crisis. Using structural equation modeling and a nationally representative urban sample of 711 married women and 490 married men, we tested whether economic hardship and the associated family economic strain on families resulted in greater marital problems. Our results showed a modified family stress model applies to Turkey. In contrast to most previous research, economic strain had a direct effect on marital problems, and the indirect effect of strain, via emotional distress, was only significant for women. The results were interpreted in light of social and cultural factors that condition how economic distress affects marital relations.     

EU Accession and Income Growth: An Empirical Approach

The dynamic effects from EU membership are crucial for the new member states to catch up with the average income level in the old member states. To gauge the dynamic effects we follow a two-step procedure in which a gravity equation for bilateral trade shows the trade effect of EU membership and a growth regression yields the income effect of trade. Shared EU membership is found to increase trade between two of its member states with about 27%. EU membership may contribute to trade by inducing countries to improve the quality of their institutions. Trade increases by another 23% if institutions improve, yielding a total trade increase of 50%. Improved openness increases income by 38% according to our estimates. Adding a small direct effect of improved institutions on income, the total income effect of EU membership is 40% for the 12 new members and Turkey. This implies that EU membership, or its effect on trade and institutions, could lead to large economic gains for the new member states, but does not bring them economically on par with the old member states.

消费者购买直销产品意愿的影响因素研究——以北京地区为例的实证研究

首先结合消费者决策理论,通过总结文献和对行业从业人员进行访谈,归纳出了直销消费者决策单元过程。然后,在总结阶段直销特点的基础上收集资料建立消费者接受直销的影响因素模型,并开展问卷调查进行实证研究,运用SPSS软件与AMOS结构方程模型验证了模型和假设。最后,从实证分析的模型验证结果得出如下结论：消费者在接受直销过程中,感知可靠性比感知有用性对购物意愿的影响更为显著,而在直销过程中影响消费者感知可靠的主要因素有产品的知名美誉度、情感体验、感知有用三个方面。     

不具备Nagumo条件的边值问题的微分不等式

在一定的条件下研究一类不具备Nagumo条件的二阶微分方程的边值问题的微分不等式理论及解的存在性.     

陕西农业技术进步状况的分析

在对农业技术进步和农业技术进步贡献率测定方法理解的基础上，采用增长速度方程对陕西省1984—2002年农业（狭义，主要指种植业）技术进步贡献率进行了测算，发现该省的农业技术进步贡献率还处于比较低的水平，农业的发展对资金投入有很强的依赖性。     

合并新村脆弱性决定因子识别——基于宁夏永宁县试验区的探索

村庄合并是对传统村镇空间结构与组织形态的重大变革,是村民生计方式与社会结构的重大调整。合并新村建设初期因为居住环境、公用基础设施、公共服务体系不够完善,常表现出一定程度的脆弱性。脆弱性扰动、敏感性、适应力是抽象概念,不可直接观测。通过构建合并新村脆弱性结构方程模型对潜在变量对应的15个观测变量进行估计,有效排除了主观性判断影响,识别出5个重要影响因子。低保水平、政民互动因子是扰动的重要影响因子,养老保险、政策兑现因子是敏感性的重要影响因子,对外交通是适应力的重要影响因子。灰色定权聚类模型克服了结构方程模型能识别重要与次要因子但无法判断影响状态的不足之处。对上述重要影响因子与县域人均GDP指标进行再评估,最终识别出4个脆弱性决定因子,其中低保水平是脆弱性的扰动决定因子,养老保险、政策兑现是脆弱性的敏感性决定因子,县域人均GDP值是脆弱性的适应力决定因子。     

移动电子商务成功模型的实证研究

为预测影响人们使用移动电子商务的因素,采用实证研究的方法,分析了与移动技术相关的变量,如消费者创新质量感知、信任和感知价值这些指标对用户使用移动技术应用意图的影响,并利用收集来的数据对模型进行了实证检验,采用结构方程模型技术对模型进行了确认性测试。研究结果为移动电子商务的实践应用提供理论支持。     

国防生培养综合素质影响因素分析

依托普通高等学校培养军事人才已成为国内外培养军队干部的重要渠道。基于国防建设对国防生综合索质的要求,建构了国防生综合素质的结构方程模型,并验证了加强军政训练、增强学习能力是提高国防生综合素质的有效的途径。研究结果表明：军政训练对思想政治素质、军事专业素质、身体心理素质有正面影响;学习能力对科学文化素质有正面影响;自我激励对军政训练有正面影响;环境条件对军政训练和学习能力有正面影响。     

关于一个线性算子群的问题

在一个线性算子群应用于二阶线性发展方程求解的思路基础上［１］，归纳其中的生成算子为ｎ阶矩阵形式，进一步提出了该生成算子的线性算子群，在巴拿赫空间中证明了这个线性算子群的基本特征，且是高阶线性发展方程求解理论的基础部分。当然，低阶线性发展方程的解为其特殊情况