陕西省居民家庭消费支出的扩展线性模型(ELES)分析

消费需求是最终需求,消费拉动是最根本的拉动。积极研究陕西省消费需求的相关问题,增强其对经济增长的拉动作用,对于保持陕西省经济的持续稳定增长具有重要的意义。文章根据1999--2008年陕西省城乡居民消费结构的数据,利用扩展线性支出系统模型（ELES）分析法,对陕西省城乡居民消费结构的现状及变动趋势进行了分析,在此基础上,对扩大陕西省居民消费需求、优化居民消费结构提出了建议。     

由边际技术替代率递减规律分析马克思的资本有机构成理论

资本有机构成概念是马克思分析资本积累历史趋势的理论创新。但其关于资本不同部分变动规律的论述更多地表现为一种规范意义的价值判断,而欠缺必要的相关因素实证分析。撇开制度属性不谈,边际主义的边际技术替代率递减规律与马克思的资本有机构成理论有着相同的逻辑起点和分析轨迹,都着眼于长期经济过程中两种要素的变化趋势与利润最大化关系的研究。我们将二者结合,引入西方经济学等成本线等分析工具,对马克思的资本有机构成理论作尝试性的分析,旨在寻求对马克思资本积累理论更全面、更深刻的认识。     

福建4种薏苡营养成分的分析比较

本文对福建4种主要薏苡品种营养成分进行了对比分析.结果表明,薏苡仁的蛋白质含量较高,蛋白质的平均含量为17.48％;薏苡仁氨基酸组成齐全,氨基酸含量最高为翠薏1号;必需氨基酸中,含量最高为亮氨酸,含量最低为赖氨酸,蛋氨酸+胱氨酸的含量较为丰富,氨基酸含量均高于大米.以AAS与CS为标准,第一限制性氨基酸为赖氨酸,第二限...     

产业结构变动对货币流通速度的影响——中国货币流通速度下降之谜

文章运用协整分析、格兰杰因果检验和误差修正模型实证研究了中国产业结构变动与货币流通速度之间的动态关系以及“货币化假说”。实证分析结果显示货币化对货币流通速度的影响随着时间逐渐增强,但这并不能完全解释我国货币流通速度下降;产业结构变动才是影响我国货币流通速度下降的主要原因。通过误差修正模型发现我国狭义货币流通速度相对于产业结构变动的弹性为2.7,广义货币流通速度相对于产业结构变动的弹性为1.2。     

我国商业银行推行战略成本管理的思考

随着我国商业银行股份制改造步伐的加快,各家银行为了保持竞争优势,在产品、服务、价格、质量、人才等方面展开了全方位的竞争。从成本角度来看,商业银行能否改变传统成本管理在某些方面的局限性,通过推行有效的战略成本管理,建立起本行的“低成本竞争优势”,已成为商业银行是否具有核心竞争力的关键因素之一。文章对传统成本管理与战略成本管理进行了差异比较,分析了战略成本管理的优势及商业银行推行战略成本管理的必要性,提出了现阶段商业银行推行战略成本管理的着力点,并需不断寻求特定条件下的最优模式。     

要素投入结构变化对中国农业增长影响的实证研究

从生产要素结构变动的角度,分析了1985年与2004年中国各省(市、区)农业生产要素投入比例的变化,然后借助计量经济模型检验了两个时期要素产出弹性的差异。结果显示:随着资源配置市场化的深入,土地与劳动力在农业生产中的投入比例呈下降趋势,而资本的投入比例日益上升。就产出弹性而言,2004年资本要素的产出弹性最大,劳动次之,土地的产出弹性最小。但与1985年相比,各要素的产出弹性变化趋势不同,其中资本与土地的产出弹性呈现幅度不等的下降,而劳动的产出弹性则是上升的。研究同时表明中国农业产出处于规模报酬递增阶段,近期内增加农业的资本投入对农业的增长仍具有重要意义。     

The consequences of armed conflict on household composition

We evaluate the effect of large-scale violent conflict on the household composition of internally displaced persons using quantitative data from Colombia. We use a panel database of migrants constructed with the Sisben database (used to target social programmes in Colombia) for 2006–2009. We follow migrant mothers and children who belong to nuclear-biparental households before migration, and analyse the changes in the composition of their households after migration through multilevel multinomial logistic models. We do this separately for rural and urban migrants because they exhibit differences in household composition traditions and exposure to armed conflict. We find that urban and rural migrants have different migration strategies in both peaceful and armed conflict circumstances. We conclude that the household compositions of mothers and children are differently affected by violence, which might be caused by family separation; for example, rural children have a higher probability than mothers of belonging to households which are not nuclear biparental. We also find that exposure to violence can increase or decrease the effects of individual variables; for instance, in peaceful situations it is more likely that a household remains intact during migration when the number of children per adult increases; however, this effect is attenuated in violence situations.     

Sovereign debt composition and time-varying public finance sustainability

We compute time-varying responses of the sovereign debt ratio to primary budget balances for 13 advanced economies between 1980 and 2012, and assess how fiscal sustainability reacts to different characteristics of government debt. We find that the sustainability time-varying coefficient increases and countries become more fiscally sustainable if they contract a higher share of long-term public debt, if more debt is held by the central bank or if it is easily marketable in capital markets.     

Corporate governance and the bankrupt firm: An empirical assessment

The incidence of bankruptcy has risen dramatically among firms of all types and sizes in the past decade. Little is known, however, about the effects of alternative governance structures on the propensity of an organization to file Chapter 11 bankruptcy. Relying on logistic regression for periods 5 years and 3 years prior to the bankruptcy, as well as the contemporaneous period, we examine the relationships among independent/interdependent board composition and the structure of CEO/board chairperson positions and the filing of bankruptcy. While controlling for a series of financial indicators and firm size, the results illustrate robust explanatory power for the governance variables for both lagged periods.     

偏心滚子活齿传动的研究

本文分析了活齿传动的组成结构,提出了一种新型结构型式的活齿传动——偏心滚子活齿传动,论述了偏心滚子活齿传动的结构组成、运动学和齿形综合问题,应用高低副替代理论得到了它的等效机构,利用等效机构推导出中心轮的齿形方程式。