Core is manipulable via segmentation

Any allocation rule that picks only core allocations is manipulable via segmentation. That is, there exists an economy with a coalition of agents such that, once this coalition splits momentarily from the rest of the economy and institutes the allocation rule within itself, no matter which individually rational sub-allocation the complementary coalition picks, when we paste all the agents back together at their new endowments and apply the allocation rule to this “collage” economy, each member of the former coalition will be strictly better off than under direct application of the allocation rule to the original economy.     

Resource Management under Production and Output Price Uncertainty: Implications for Environmental Policy

Various environmental policies have been proposed to control agricultural runoff of nutrients and pesticides. The impacts of these policies on input use are complicated because of the various sources of uncertainty farmers face and the precise nature of farmers' risk attitude. A risk–averse farmer's response to changed profit , input , and output taxes under output price and production uncertainty is examined. The impact of these policies on input use depends on the form of production uncertainty, risk–input relationships, risk attitudes, and degrees of output price and production uncertainty. These results have implications for the design and implementation of environmental and other production–related policies.     

A yield management model for five-star hotels: Computerized and non-computerized implementation

The purpose of this study was to propose an enhanced yield management (YM) model that was developed based on the previous models and to test the applicability on five-star lodging properties in Turkey to identify the related problems. The proposed model overcomes some of the limitations of previous ones. It was specifically developed for full service, upscale hotels, namely for five-star lodging properties with or without a computerized yield management system (CYMS). Examination of the actual implementation stages provided useful insight in determining the applicability and the problems related to the application of the model. Findings indicted that the proposed YM model can be used by all upscale properties (with or without a CYMS) to manage their revenue and yield. Findings suggested that the application of the model is likely to improve the operational and financial performance for both type of properties.     

The maximum entropy median in the presence of an outlier

When a random sample of size n from a standard normal population is contaminated by a normal outlier with either a different mean or a different variance, the maximum entropy median outperforms the sample median in terms of squared-error loss. The only exception is when n=3 and the outlier mean or variance is sufficiently different.     

Testing the validity of PPP theory for African countries

This study examines the purchasing power parity theory for 14 African countries by applying a recent composite time series method that incorporates the Fourier approximation. The structural breaks are modelled as a gradual smooth process by means of a Fourier component. The Fourier unit root test failed to find any evidence showing that real exchange rates for these 14 countries have mean-reverting tendencies. However, both cointegration and Fourier cointegration tests detect a stable long-term relation between the nominal exchange rate and relative price levels for 8 out of 14 countries; moreover, for five countries Fourier component in cointegration analysis is found to suit quite well.     

Bribery solicitations and firm performance in the Latin America and Caribbean region

This study shows that for firms in the Latin America and Caribbean region, bribery significantly distorts firm growth. Firms that were solicited for bribes when conducting business transactions – such as applying for permits, electricity, or water connections – have 23% lower annual sales growth than firms that do not face such solicitations. Moreover, these distortions are more severe for low-revenue-generating and young firms. Using the instrumental variables method on cross-sectional data as well as evidence from panel data, the authors show that these results are robust to different specifications and the use of different sub-samples.     

The Doha Round of the World Trade Organization and Agricultural Markets Liberalization: Impacts on Developing Economies

We investigate the impacts of multilateral removal of all border taxes and farm programs and their distortions on developing economies, using a world agriculture partial equilibrium model. We quantify changes in prices, trade flows, and production locations. Border measures and farm programs both affect world trade, but trade barriers have the largest impact. Following removal, trade expansion is substantial for most commodities, especially dairy, meats, and vegetable oils. Net agricultural and food exporters emerge with expanded exports; net importing countries with limited distortions before liberalization are penalized by higher world prices and reduced imports. We draw implications for current World Trade Organization negotiations.     

Can progressive taxation account for cross-country variation in labor supply?

The difference between average hours worked in the US and average hours worked in Continental European countries has been increasing since the early 1970s. To explain this phenomenon, this paper develops an endogenous growth model with two key properties: agents are heterogeneous in their rates of time preference and labor skills, and the model incorporates progressive income taxes. The model is calibrated to US and German data for the periods 1971-1974 and 1986-1989. Our findings suggest that the degree of progressivity is a major factor in explaining the patterns of the US and German labor supply over time. Predictions of the model also match the distributional trends in both countries during this time period.     

The Effect of Demographics on Job Satisfaction: A Study of Hotel Managers in Turkey

This study examined the relationship between selected demographic characteristics of middle-level hotel managers in Turkey and five selected job satisfaction dimensions (degree of satisfaction with the work, coworkers, supervision, financial compensation, and promotion opportunities). In addition, the relationship between job satisfaction dimensions and the middle-level hotel managers' overall job satisfaction level was analyzed. The study sample consists of 103 middle-level hotel managers (all Turkish nationals) in 17 rated four- and five-star hotels in Kusadasi, Turkey. Study findings indicate significant differences between managers in various demographic categories and their levels of job satisfaction. Overall, the data revealed that financial compensation, promotion opportunities, and supervision most significantly impacted middle-level hotel managers' overall job satisfaction levels.