Do homeowners achieve more household wealth in the long run?

Despite the public’s faith in homeownership as a vehicle for wealth creation, there are surprisingly few empirical studies of the independent impact of homeownership and its duration on household wealth accumulation. This paper provides the first empirical evidence that homeownership, after controlling for other drivers of wealth accumulation, is positively and significantly associated with wealth accumulation over time. Using the Panel Survey of Income Dynamics, it examines the influence of housing tenure choices between 1989 and 2001 on household net wealth levels in 2001 after controlling for initial wealth in 1989, location, income, education, and other family and personal characteristics that might influence the rate of wealth accumulation. Importantly, the models used also control for the tendency of households to accumulate wealth between 1984 and 1989 (five years prior to the studied period). This approach is used to address the possibility that an unobserved variable—the propensity to save or accumulate wealth—may be associated with both the probability and duration of homeownership and the rate of wealth accumulation. All else equal, those who owned homes and owned for longer periods of time had significantly higher household net wealth by 2001. These results are compelling because house price appreciation over the period was near its long-run average while stock gains were above and real rent increases below their long-run averages. Hence, the findings are suggestive of a positive influence of ownership over long periods on net wealth, even during a period when alternative investments produced higher than normal returns and rents grew slowly. This is especially important because the overwhelmingly majority of households do not sell their homes shortly after buying them. In our sample, those who became owners typically owned for 7 years. Furthermore, most households that bought during a period of declining real home values in the early 1990s continued to own their homes for at least eight years and came out well ahead of those who did not own.     

水泥土搅拌桩复合地基承载力的灰色预测

详细阐述灰色模型的建立及调整过程,利用复合地基沉降实测数据,根据灰色系统理论,建立(1,1)模型,可模拟复合地基的P~s曲线,预测地基沉降的发展趋势,分析水泥土搅拌桩复合地基的承载性能。     

报废汽车回收体系结构模型研究

报废汽车的回收重用一方面是＂生产者责任延伸制＂在汽车行业贯彻实施的结果,另一方面来源于再制造环节中蕴藏的丰厚利润的诱导.目前我国回收利用报废汽车的方式比较落后,主要是对原材料进行重用.本文构建了一个由汽车制造商牵头纽建,以功能多样化的回收中心作为中心处理单元的报废汽车回收体系结构模型,以期实现更高层次的回收重用.     

供应链中双方供应的竞争和合作博弈研究

针对当前供应链中供应方面存在的相关局限性。构造了双方供应和制造商之间的博弈模型。该模型主要特点是双方 供应之间的二阶段博弈所形成的质量和价格策略。在此条件下制造商和供应商之间进行讨价还价。以分配整体利润。指出了供 需双方在讨价还价时存在惟一的子博彝精炼纳什均衡。     

基于物流保险发展的几点思考

分析在物流业高速发展,其风险亦加大的新形势下物流保险发展迟滞的原因,并提出了促进物流保险发展的相关建议。     

物流企业服务柔性能力研究

分析了我国物流企业现状,研究了服务柔性能力内涵,提出从三个层面研究发展物流企业服务柔性能力。     

基于价值工程的项目团队人员配置的构件化管理

根据软件工程中软件开发模块构件化与项目管理中项目职能分解的相似性,把构件化方法引入到项目团队人员配置中,按照项目职能的构件并灌以价值最大化的思想来进行项目团队人员的选择方面的应用,并为企业建立项目人员配置构件化的管理体系,来实现满足人力配置需要,降低费用,长期改进发展的目的。     

对我国技术引进消化吸收与创新问题的思考

技术引进是迅速提升我国技术水平的有效捷径,本文在分析必须重视引进技术消化吸收和创新的基础上,分析了我国农业引进技术消化吸收和创新的主要制约因素,提出了加强引进技术消化吸收和创新工作的对策.     

Across-the-Curve Credit Spread Indices

We design a novel across-the-curve credit spread index, AXI, a measure of the recent cost of wholesale unsecured debt funding for publicly listed US bank holding companies and commercial banks. AXI, a benchmark for bank lending and risk management, is the weighted average of credit spreads for unsecured debt instruments with maturities ranging from overnight to five years, with weights that reflect both transaction and issuance volumes. We provide illustrative output of the bond-based component of AXI. By widening coverage to include all corporate debt issuers, we also build a financial conditions index (FXI).     

养老保险全国统筹、渐进式延迟退休与基金可持续

基于精算模型分析养老金全国统筹与渐进式延迟退休年龄政策对养老保险基金可持续性的影响,结果显示：全国统筹政策在短期使财政负担下降100%,长期内不能有效降低财政负担。在此基础上实施“女先男后”和“男女同步”渐进式延迟退休年龄政策能分别使养老保险累计财政负担降低6.68%和34.36%。为有效减轻养老保险基金支付压力和财政负担,应完善全国统筹政策,并尽快出台渐进式延迟退休年龄方案。