Housing tenure choice and the dual income household

Housing tenure choice has been the subject of a very large literature. Many treatments have sought to estimate the effect of household income on the likelihood of home ownership. To date, no study has ever disaggregated the household income of married couples into the separate labor income components to see if one partner’s income has a different effect than the other. Using a derived likelihood function to control for censoring in the wife’s income, this paper estimates the effect of separate incomes on housing tenure choice, accounting for possible endogeneity of the wife’s income. To compare the results of this estimation method, the paper also estimates the standard IV models, 2SLS and IV probit. While the results show that there is no endogeneity of the wife’s income, ignoring the censoring of the endogenous variable (when a large fraction of observations are censored) can possibly lead to biased coefficient estimates. Also, this paper confirms the importance of total household income, which has a larger effect than the total disaggregated components.     

回归诊断在统计数据异常值探测中的应用

近年来有关异常值的理论探讨一直是个热点问题，从回归模型诊断的角度对统计数据中的异常值进行探测与分析，并在基于R语言的基础上，结合具体实例，给出回归诊断在统计数据异常值探测中的应用。     

SPATIAL DISCRIMINATION,PRODUCT SUBSTITUTABILITY AND WELFARE

The paper examines a quantity–location duopoly game in a spatial discrimination model in which the delivered goods are assumed to be imperfect substitutes or complements. By extending the range of the unit transportation cost analysed in the existing literature, it is shown that a dispersed equilibrium arises in which the choice of the optimal locations is affected by the degree of product substitutability. The interaction between the latter and the size of the transportation cost is also discussed in order to verify its welfare implications. In particular, it is shown that in this spatial framework imperfect substitutability may increase welfare.     

Where Should the Elderly Live and Who Should Pay for Their Care?*

We consider a model with a population consisting of earners and retired persons; elderly care is publicly provided. There is one big city, where congestion effects and agglomeration forces are at work, and a number of small villages. We show how the externalities related to population mobility lead to an inefficient spatial distribution of earners and retirees, and we characterize the second‐best solution. Decentralization of this solution in a fiscal federalism structure requires the use of taxes and subsidies proportional to the number of earners and retired persons living in the city and the villages.     

Buying a Home with a Resale Value: Location,Location, Location*

We develop a dynamic multiregion model, where a household's choice of housing location depends on its current wealth and its current type, and involves both consumption and investment considerations. The relative strength of the consumption motive and the investment motive determines the equilibrium pattern of residential sorting. A strong investment (consumption) motive implies sorting according to household type (wealth). The model predicts that large house‐price fluctuations are associated with a low degree of sorting by type. This prediction is consistent with evidence from US metropolitan areas when income, education, and age are used as proxies for household type.     

The Innovative Performance Of The World'S Largest Firms: Some New Evidence ‡

Data on R & D expenditures and US patenting in the world's 660 largest, technologically active firms both show a linear relation between firm size and the volume of innovative activities, despite some inconsistencies between the two measures. Technological diversity increases with firm size, but relatively weakly, especially in R & D-intensive sectors. Sectoral variations in the comparative technological advantage of large firms based in Japan, the USA and W. Europe are better explained by variations in rivalry in their home market than by variations in their size.     

Agglomeration economies with consistent productivity estimates

This paper investigates the relative impact of microeconomic agglomeration mechanisms on plant's total factor productivity (TFP) using German establishment and employment-level data. Contrasting different strategies for estimating TFP from plant-level production functions reveals that unobserved output prices bias true productivity and lead to underestimated agglomeration economies. With the corrected TFP measure, the largest impact is found for labor market pooling, which is captured by the correlation of the occupational composition between one county-industry and the rest of the county. This main result is robust, even when the spatial units are resized from counties to larger labor market regions. Input linkages appear to be relevant only at this larger regional scale. Overall, agglomeration economies differ substantially across industries. Only for a subset of industries, some positive evidence is detected for knowledge spillovers.     

Housing Allowance and the Rent of Low‐income Households

This paper analyses the effect of a housing allowance programme on the rent paid by assisted low‐income households. The data consist of 12,000 rental households in the free‐market and municipal sectors. The effect is estimated using the programme reform of 2002 as an instrument. The reform increased the allowance of the assisted households depending on housing characteristics, but it had little effect on the eligibility. Results suggest that in the private sector, one additional euro of allowance increases the rent of claimants by 60–70 cents. The effect is zero in the municipal sector, as rents are tied to the housing costs.     

研究与开发支出述评

研究与开发（以下简称R＆D）支出是企业获得超额利润的一个重要源泉,研究R＆D支出与企业的关系显得非常重要。R＆D支出是指企业R＆D投入强度。本文主要区分国内外研究现状,从R＆D支出对企业价值、企业业绩、企业风险及成长性等方面的影响角度进行综述。本文梳理了相关研究的脉络,力求为学者们的后续研究提供便利。     

基于4R理论的海外旅游专业硕士课程设置的思考

现代旅游业的国际化需要大批具有丰富行业管理经验的应用型、外向型人才．美国教育专家多尔的建构性4R理论为解决我国高等旅游教育课程设置中存在的问题提供了理论依据．在分析4R理论的基础上，对10多个国家及地区旅游专业硕士课程进行比较研究，并以西安外国语大学为例，结合其办学特色，从国际化、应用性、职业化人才培养视角，探索旅游管理专业硕士课程建设问题，以期使课程结构体系及内容符合市场要求．并随着旅游教育目标群体及教育者群体多样化拓宽，使高等旅游教育大众化走向完善，实现就业意义上的“供给创造需求”。