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721.
The Harris-Todaro hypothesis and the Heckscher-Ohlin-Samuelson trade model : A synthesis 总被引:1,自引:0,他引:1
M. Ali Khan 《Journal of International Economics》1980,10(4):527-547
We report a model of the Harris-Todaro variety in which capital is mobile and the urban wage is endogenous. Our model subsumes several other models presented in the literature. We extend the central theorems of trade to our model and also present formulae for the shadow wage and shadow rental. Our principal findings include (a) nonexistence of equilibrium in an important specialization of the model; (b) a factor-price and unemployment rate equalization theorem: and (c) an identical subsidy to labor but a differential subsidy to capital for obtaining a second-best optimum. 相似文献
722.
723.
For a market with an atomless continuum of assets, we formulate the intuitive idea of a “well-diversified” portfolio, and present a notion of “exact arbitrage”, strictly weaker than the more conventional notion of “asymptotic arbitrage”, and necessary and sufficient for the validity of an APT pricing formula. Our formula involves “essential” risk, one based on a specific index portfolio constructed from factors and factor loadings that are endogenously extracted to satisfy an optimality property involving a finite number of factors. We illustrate how our results can be translated to markets with a large but finite number of assets. 相似文献
724.
Dating back to the 1980s, American Express (AMEX) has been a corporate leader in successfully applying cause-related marketing
(CRM) to boost membership and credit card usage in troubled markets. During a downturn in the mid-1990s, AMEX and Share Our
Strength (SOS), a nonprofit organization tackling the problem of hunger in the United States, formed a strategic alliance
to create one of the best known and most highly touted CRM campaigns. AMEX implemented an innovative cause branding (CB) effort
to convince its cardholders to “Charge Against Hunger” (CAH) by utilizing their AMEX credit cards more frequently during the
holiday season. Over the 4-year life of the program, the issue of hunger in the United States was put somewhat higher on the
public agenda as more than US $21 million were raised for SOS projects. This study assesses how AMEX’s public relations efforts
contributed to the success of the CAH campaign. 相似文献
725.
The main intention of this paper is to investigate, with new daily data, whether prices in the two Chinese stock exchanges (Shanghai and Shenzhen) follow a random‐walk process as required by market efficiency. We use two different approaches, the standard variance‐ratio test of Lo and MacKinlay (1988) and a model‐comparison test that compares the ex post forecasts from a NAÏVE model with those obtained from several alternative models: ARIMA, GARCH and the Artificial Neural Network (ANN). To evaluate ex post forecasts, we utilize several procedures including RMSE, MAE, Theil's U, and encompassing tests. In contrast to the variance‐ratio test, results from the model‐comparison approach are quite decisive in rejecting the random‐walk hypothesis in both Chinese stock markets. Moreover, our results provide strong support for the ANN as a potentially useful device for predicting stock prices in emerging markets. 相似文献
726.
The objective of this paper is to determine the optimum level of quality a firm should choose in a product/service, given the customers‘ perceptions of quality and the reference standard in a competitive market. Our work on this quality selection problem differs from those of past researchers in that we model explicitly customer's perceptions and the reference standard. We develop a game-theoretic model to obtain insights into the firms’ quality selection problem. The model results suggest that the market differentially provides rewards or penalties to firms depending upon customers' perceptions as well as other market and product-specific parameters. We contrast our findings for an oligopolist with that for a monopolist and observe that although an oligopolist often provides a better quality product, he does not do so always; especially when perceptions are sufficiently weak and the reference standard is endogenous. 相似文献
727.
A study is reported where the introduction of teamworking was accompanied by negotiated changes in working time patterns, involving some employees transferring to a 5‐shift, 8‐hour pattern, others to a 5‐shift, 12‐hour pattern. Employee attitude surveys before and after the changes show those moving to 12‐hour working much more satisfied with both working time and other changes, compared with those remaining on 8‐hour shifts. The creation of extra non‐work days was seen as the major advantage of the longer shifts, which compensated for the harder work regime identified under teamworking and the greater rigidity of the 5‐shift system. The findings underline the potential significance of working hours for employee support for broader changes in working practices. Possible explanations of why the longer shift pattern met with considerable support at one research site, but failed to gain support at a similar site elsewhere, are also explored. 相似文献
728.
This special issue of Economic Systems includes five papers about the World Bank lending in developing countries. The motivation for the special issue stems from the relatively extensive literature on the sister institution, namely, the International Monetary Fund (IMF), but not on the World Bank itself. The papers’ focus is the influence of the World Bank lending on economic growth, education and health, poverty reduction, and regulation in the recipient countries. The papers’ findings contribute to our understanding of the effects of the World Bank lending in developing countries, which reflects both successes and shortcomings. 相似文献
729.
M. Ali Khan 《Journal of Business Ethics》2004,52(2):189-206
On taking the common distinction between the legal and the ethical as a point of departure, and in an effort to understand Marshall's approach to self-interest, and thereby to his conception of an ethics of commerce, I read three of his essays in the light of some non-technical writings of Frank Hahn and three other Cambridge intellectuals. My larger project connects self-interest and self-deception to a possible ethics of theorizing in economics, and thereby to the ethics of the relationship between the theorist and the theorized, the analyst and the analyzed. 相似文献
730.
Ali K 《Pakistan economic and social review》1985,23(1):65-83
The contribution of agricultural modernization to changes in fertility in developing countries was examined. A model for the determinants of both fertility and infant mortality--hypothesized to be positively related--was specified and applied to cross-sectional data for 75 developing countries for the year 1971. The infant mortality rate, productivity per unit of labor and land, and density of population for agricultural land were highly correlated with the crude birth rate. The only other exogenous variables highly correlated with each other were productivity per unit of labor and infant mortality, and productivity per unit of land and population density for agricultural areas. The coefficient of population density of agricultural areas suggested a negative impact of density on fertility. The infant mortality rate, productivity per unit of land and labor, and density of population of agricultural areas explained 85% of the intercountry variation in fertility. The infant mortality rate, productivity of land, and productivity of labor were of descending order of importance in determining the crude birth rates in the countries analyzed. 68% of the intercountry variation in infant mortality was explained by fertility, adult literacy, per capita energy consumption, gini-coefficient of income distribution, population per hospital bed, and protein supply. Adult literacy, crude birth rates, population per hospital bed, per capita energy consumption, per capita protein supply, and gini-coefficient of income distribution were of descending order of importance in determining infant mortality rates. All of the variables that affected infant mortality directly affected fertility indirectly; conversely, all the variables that affected fertility directly affected infant mortality indirectly. Overall, these results confirm that agricultural modernization does exert an effect on fertility. The task in developing countries is to break the vicious cycle of infant mortality and fertility. This can be achieved both through family planning programs and the diffusion of health programs to lower infant mortality. 相似文献