中国自由贸易协定揭开隐藏的成本节约的秘密

当今的全球经济中,“中国价格”正在不断影响产品的生产区域和方式。中国具有丰富的劳动力资源以及低成本的生产结构。仅仅使用在其他国家生产产品的一小部分成本,就可以在中国生产出“中国制造”的产品。全世界的消费者当然希望能够获得更低的价格。     

Demographic change and income inequality in the United States, 1976-1989

"The U.S. economy experienced significant increases in the degree of income inequality over the past two decades.... In this paper we consider the effects of race, age, female headship, and college education on the distribution of family income by developing a multivariate methodology that allows us to gauge the influence of one factor while holding other determinants of family incomes constant. Over the period studied we find that race had only a minor effect on the overall size distribution of income. Age had a somewhat greater effect than race. In contrast, the impact of female heads and college education were quite substantial. The multivariate estimates reveal that the effects of female heads and college education both increase the Gini to a much greater extent than the progressivity of federal income taxes decreases it. The effects of college education and female headed families on inequality have grown larger across time, while the influence of age has declined. We find that the effects of race on inequality have changed little over the 1976 to 1989 period."     

Lending Through the Cycle: The Federal Housing Administration’s Evolving Risk in the Primary Market

Utilizing a sample of loan originations, the distribution of the market served by the Federal Housing Administration (FHA) and conventional lenders is modeled through this current cycle. Results indicate that FHA market shares in the early years of the observation period (2003 through 2006) are concentrated in zip codes with higher economic risk characteristics and obtained by high risk borrowers. FHA is forced to accept lower quality loans as competition from more nimble private lenders with lower access hurdles and more rapid processing expanded into markets traditionally served by FHA. Unexpectedly, the analysis also reveals that the distribution of FHA loans fails to exhibit a targeted racial bias toward neighborhoods with African American Concentration.     

Simulated testing of nonparametric measure changes for hedging European options

We test the accuracy and hedging performance of the deltas given by a range of nonparametric measure changes. The nonparametric models accurately estimate deltas across a number of asset price dynamics. The optimal nonparametric measure change displays superior estimation bias, which depends on how the models capture the stylised features of the dynamics, moneyness, and time-to-expiry. Differences in estimation error appear negligible. The optimal measure change produces superior static hedging outcomes compared to the Black–Scholes model. Differences in dynamic hedging outcomes are negligible.     

What's in Your 403(b)? Academic Retirement Plans and the Costs of Underdiversification

Sponsors of defined contribution retirement plans typically limit the investment choices of plan participants to a small number of investment managers and a limited number of investment vehicles. Such restrictions may limit excessive risk-taking by participants but also may preclude opportunities for efficient diversification. Many college and university 403 (b) plans have restricted investment choices to the retirement annuities offered by TIAA-CREF, the current manager of over half of all 403(b) contributions. Using 10 years of historical data, we study the efficiency of this TIAA-CREF opportunity set relative to a larger set that includes several standard index funds. Extrapolations must be interpreted -with caution. Assuming optimal rebalancing, depending on loss aversion and diversification constraints, the historical sample of returns implies that over a 20-year remaining work life, an employee -with an expanded menu that includes standard index funds could gain over 40% in terminal wealth compared to one who is restricted to TIAA-CREF retirement annuities. Even when a naive diversification strategy of equally weighting (1/n) all available funds is used, the expandedmenu outperforms the restricted portfolio by more than 25% over20years. These differences generally are significant at conventional levels based on parametric and nonparametric testing and do not appear to result from idiosyncratic market performance durinz the sample period.     

An empirical investigation of the effectiveness of an integrated service recovery system

Although service recovery has become an increasingly-studied topic in the operations management literature, robust theories and accompanying empirical studies have only begun to emerge. For example, while many authors have identified and measured the specific activities that are perceived by consumers as effective ways to recover from failure, much less attention has been directed at the systematic structuring of recovery efforts to consistently ensure customer satisfaction and achieve improved, long-term organizational outcomes. Building on recent research that identified the principal constructs of service recovery, this study seeks to explore the relative effectiveness of an integrated service recovery system. Data from 158 service organizations are used to explore the relationship between the system and its associated recovery outcomes. Results indicate that a complete recovery system defined by seven distinct dimensions (formalization, decentralization, comprehensiveness, accessibility, influence, human intensity, and system intensity,) significantly impacts internal capability improvements as well as externally-perceived outcomes (i.e., speed, employee empathy, and recovery effectiveness) while both of these outcomes have a significant impact on customer satisfaction and market performance attributed to service recovery     

Economic Depreciation of Residential Real Estate: Microlevel Space and Time Analysis

Three elements in the study of real estate depreciation that warrant further consideration are uncovered: the spatial variation of depreciation on a micro scale, the variability of depreciation within a single market across time and the recognition of land value as an influence in modeling real property prices. Taken together, these three dimensions provide an opportunity to further expand the understanding of residential economic depreciation while enhancing the predictive power of real estate market models. The analytical results, utilizing a land-value-adjusted hedonic model, indicate that both the intramarket location and the year in which the property sold have significant impacts on the observed rate of economic depreciation. Such information is vitally important to policymakers and others interested in accurate modeling of real estate markets.