Economics and underdetermination: a case study of urban land and housing economics

Underdetermination, associated with the Duhem–Quine thesis,is a familiar if under-researched theme in economics. In thelight of this, we examine the development of urban land andhousing economics. Through its Cartesian dualistic delineationof theory and data, the contemporary mainstream approach appearsunable to circumvent the problem of underdetermination. In effect,it employs the strong version of Duhem–Quine in its retentionof the assumption of a single, unitary competitive market (andassociated access–space trade-off). Conversely, we highlightthe affinity of Ely's (and the later Columbia School's) approachto pragmatists Dewey and Peirce, which provides a more fruitfulbasis for explanation.     

PLANNING MULTIPLE LOCATION INVENTORIES

Supplying customer demand from comparable alternate inventory locations when an item is out of stock at its primary stocking point creates a virtual inventory for that item. The expectation is that if more inventories can be drawn upon, the inventory for an item would be lower, the fill rate would be higher, or both. While generally true that safety stocks will be lower, regular stocks, on the other hand, may rise with such cross filling of demand. In this study, a methodology is developed that balances the cross filling effects on both regular and safety stocks for determining whether an inventoried item should be cross‐filled. An example and guidelines are given to show how the methodology can be simplified and applied in practice.     

Some Empirical Evidence of the Efficacy of Job Matching in Urban Labor Markets

Theory predicts that workers in cities are more likely to engage in job search, ceteris paribus, due to market efficiencies associated with greater job density. However, if job search is more efficient in urban markets, then the quality of a given job match should also tend to be higher in cities, ceteris paribus. Employed workers living in cities might then be expected to search less than their nonurban counterparts. In this latter instance, it is not city residency itself that makes search less likely, but rather the positive correlation between city residency and job match quality. Using data from the National Longitudinal Survey of Youth 1979, this prediction is confirmed: The estimated coefficient on an indicator of urban residency is found to be near zero and statistically insignificant in models of employed search that omit proxies for job match quality. When job match proxies are included in the models, the estimated coefficient on urban residency becomes positive and highly significant. This result suggests that workers are not only more likely to engage in employed search in urban labor markets, but also tend to find more productive job matches in cities over time.

皖江城市带承接产业转移示范区人才柔性流动机理分析

文章对人才柔性流动的相关理论进行阐述,在此基础上具体分析了皖江城市带承接产业转移示范区人才资源现状以及未来示范区建设过程中对人才资源的需求预测,并从人才柔性流动的必要性、可行性以及流动路径等方面对示范区人才柔性流动机理加以分析。     

资源枯竭型城市发展服务业问题研究

加快发展服务业有利于转变经济发展方式;有利于扩大内需拉动经济增长;是广开城乡就业渠道、促进社会和谐的内在要求;是转变经济增长方式、调整产业结构、促进资源枯竭型城市经济转型的必然选择.本文探讨了资源枯竭型城市服务业发展存在的问题和不足,阐述了资源枯竭型城市发展服务业的必要性和紧迫性,在吸收借鉴国内外资源枯竭型城市发展服务业做法的基础上,指出服务业发展的生产性、消费性和农村服务业等重点领域,提出了服务业发展的主要措施:深化体制改革,激活服务业企业发展活力;进一步放宽市场准入,不断提高服务业对外开放水平;规范监督管理,优化服务业发展环境;创新机制,努力构筑现代服务业人才高地;加大投融资支持力度,扶持中小企业发展.     

Did households’ time preference change due to the Great Recession?

Household time preference for US households, as measured by the planning horizon, was fairly stable for many years, but sharply changed with the onset of the Great Recession. Based on an analysis of a combination of the 1992–2013 Survey of Consumer Finances (SCF) datasets, time preference increased in 2010 and remained high in 2013, indicating households were less patient after the onset of the recession. This pattern held up even after controlling for household characteristics.     

城市交通问题的产权分析

通过对多个城市的观察,发现《中华人民共和国道路交通安全法》的许多条款形同虚设,得不到切实的执行。本文根据产权理论对这一现象进行了分析,解释当前城市交通问题的主要成因即：车辆的增多、无法识别、十字路口和交通意识。产权的主要作用是帮助人们形成与他人交流的信息的预期,有了清晰界定的产权,就可以减少城市交通中人与人之间的不确定性,减小冲突的发生。为此,本文提出了解决城市交通问题的政策建议,即限制行车数量、增强非机动车辆的识别能力和规范十字路口标识,提高公民城市交通意识。通过减少交易成本,清晰的界定产权等手段规范城市交通,从而帮助行人建立稳定的预期,保证道路畅通。     

城市居民环境行为模型构建——基于北京城市居民的调研数据分析

随着城市化进程的加快,城市环境问题已经不容忽视。很多污染问题都是直接或间接由城市居民的行为造成的,也就是说,城市居民的环境行为会直接对环境状况的改善或恶化起作用,因此对城市居民环境行为研究具有重要意义。本文在借鉴以往对环境行为研究的基础上,结合中国城市居民的特征,构建了包括环境行为、环境意识、环境知识、外界因素、个性变量为结构变量并构造结构变量间关系的城市居民环境行为模型,然后通过在北京的五个小区发放并回收311份问卷数据的基础上,运用VPLS、SPSS等统计软件对数据进行观测变量分析、模型测评属性评价和模型检验等分析,完成了对模型的实证分析,最后在结果分析的基础上提出了分别从环境行为、环境意识、环境知识等几个维度来改进城市居民环境行为表现的建议。     

转轨阶段城乡居民收入差距的演变及社会效应

我国经济体制转型期间的城乡居民收入差距呈缩小—扩大—缩小—扩大的趋势,这在一定程度上对农村居民收入的增长和对农村消费市场、人力资本投资产生负面影响,同时也对社会的稳定、经济的可持续发展以及建设和谐社会产生负面效应。