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This study exploits longitudinal employer–employee matched data from the U.S. Census Bureau to investigate the contribution of worker and firm reallocation to changes in earnings inequality within and across industries between 1992 and 2003. We find that factors that cannot be measured using standard cross‐sectional data, including the entry and exit of firms and the sorting of workers across firms, are important sources of changes in earnings distributions over time. Our results also suggest that the dynamics driving changes in earnings inequality are heterogeneous across industries.  相似文献   
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Passengers’ expectations of service quality at airports are becoming increasingly important as air traffic grows. This research investigated passengers’ perceptions of airport service quality at O.R. Tambo International Airport, South Africa. An existing model placing the concept of passenger expectations central to measuring an airport’s specific level of performance was applied. The results proved significant in terms of the investment made by the airport in staff training and highlighted areas for improvement. The results show that business travellers and leisure travellers have different opinions regarding the importance of services offered by airports and of the level of performance at ORTIA in particular. Significant differences also occur in the perceptions of frequent travellers and infrequent travellers.  相似文献   
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In The Present Paper The Author Reviews The Results Of An Investigation Aimed At Estimating The relative level of stocks in Hungary in terms of international comparisons. Though international comparison was limited by scarcity of data, it has still become evident that stocks as a whole, compared to production and sales, seem to be unnecessarily high. The investigation has been carried out in relation both to the level of stocks and their rate of increase. The global volume and building of stocks, however, did not give a satisfactory explanation, and the investigation had to be extended to the individual groups of stocks separately. In order to facilitate the comparison, stocks were classified into the following groups: agricultural stocks, goods in process, industrial finished goods and manufactures held by users, and retail stocks. The classification was based on the different function of the individual groups. This classification of stocks could be compared only with the data of the U.S A. The international comparison revealed that both the volume and the rate of increase of stocks in Hungary is unreasonably high. They are high even if we consider that the growth rate of the economy in Hungary was greater than in any of the countries examined. The author refers to the fact that the stock problem was one of the starting issues in the economic research process which led to the reform of the Hungarian economic management system introduced on 1st January 1968.  相似文献   
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