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81.
We revisit the widely discussed contribution of investment in ICT to economic growth, focusing on differences in productivity and quality of ICT across countries and time. In a growth accounting approach, we look at the way rates of return and rates of asset price decline measure these aspects. Conducting a sensitivity analysis with data from the EU KLEMS database for the years 1990–2007, we introduce a constant rate of return and a constant rate of ICT price decline. Both alternative measurements somewhat downplay the role investment played relative to growth in multifactor productivity in the U.K. and the U.S. during 1995–2000. Moreover, we show that more than half of the ICT contribution to labor productivity growth results from changes in capital quality and composition rather than from quantity.  相似文献   
82.
Prior studies on attitudes towards brand extensions focus mainly on the effects of the perceived fit between the brand extension and the extension category. This exploratory paper contributes by describing two studies of how the following four extension category characteristics affect consumers' attitudes towards brand extensions: (1) the awareness set size; (2) the perceived similarity among existing brands; (3) the perceived category familiarity; and (4) overall category attitudes. Results from two studies suggest that consumers evaluate brand extensions more favorably when the awareness set size is small or when their attitude towards the extension category is favorable. Consequently, brand managers must analyze the extension category carefully when developing brand extensions.  相似文献   
83.
84.
Recent research has identified what determines local exports and what policies might make them grow. Regions with higher Gross Domestic Product per capita, faster population growth, higher levels of skills, greater export diversification and shorter distances to ports have experienced faster export growth. However, the results of regression models apply to a theoretical representative region and do not allow one to establish where policy interventions will be most effective. This article constructs an index to identify the regions in South Africa that can export manufactured goods. It draws on the literature of the determinants of exports for indicators of the capability (or potential) to export across 354 magisterial districts in 1996 and 2001. The results show a positive relationship between export capability and export performance. The article identifies a number of front-runner magisterial districts along with those of high capability but low performance that stand to benefit most from industrial policy interventions.  相似文献   
85.
Judging from their profit trends, new technology-based firms have not been very successful in Norway. After ten or more years of activity, fewer than half a dozen has accumulated profits over £1 million. Those that risked large initial investments in order to standardize an innovative new technology enjoyed the greatest amount of success. Most firms were able to develop a prototype, but many had great difficulties gearing up for production. Insufficient financing and know-how were the main problems. Firms have had more problems with production than with marketing, but very few seem prepared for the costs and challenges of an international marketing effort. Most lacked a clear marketing strategy or business plan. Financing was often a problem: there was little private investment, and equity capital was often scarce with a mean debt to equity ratio of less than 30%. Most firms received some sort of public funding, usually in support of product development, but so far it has had little impact on profit trends. A multi-national follow-up study with access to a larger data base would provide many more insights.  相似文献   
86.
The continuing gender and race/ethnic pay gaps continue to be a matter of considerable concern. Using detailed NLSY data we examine the effects of a number of variables often thought to explain a large part of these gaps. Because the new variables explain some of the differentials our results provide no justification for ascribing all the remaining differentials to discrimination. On the other hand, they explain very little and therefore give no support to those who would discount the possibility of discrimination.  相似文献   
87.
Different change point models for AR(1) processes are reviewed. For some models, the change is in the distribution conditional on earlier observations. For others, the change is in the unconditional distribution. Some models include an observation before the first possible change time – others not. Earlier and new CUSUM type methods are given, and minimax optimality is examined. For the conditional model with an observation before the possible change, there are sharp results of optimality in the literature. The unconditional model with possible change at (or before) the first observation is of interest for applications. We examined this case and derived new variants of four earlier suggestions. By numerical methods and Monte Carlo simulations, it was demonstrated that the new variants dominate the original ones. However, none of the methods is uniformly minimax optimal.  相似文献   
88.
This paper examines demand for and access to private‐sector extension services by contracted cotton producers in northern Tanzania. Data from a non‐random survey of 520 smallholders show that only 21.9% received any extension and only 4.6% received extension from the cotton ginnery. Wealthier households were three times more likely to receive extension from any provider. While the public sector remains the main source of extension and is prioritized by smallholders, almost all households demanded extension from firms and are willing to invest 3 days per month mainly for advice on cotton and maize production. The involvement of third parties in the supply of extension from ginneries could not only meet smallholders' demands but could increase cotton supply and repayment rates to the firm, and thus finance the provision of missing extension advice.  相似文献   
89.
This paper examines an affirmative action program for “lower-caste” groups in engineering colleges in India. We study both the targeting properties of the program, and its implications for labor market outcomes. We find that affirmative action successfully targets the financially disadvantaged: the upper-caste applicants that are displaced by affirmative action come from a richer economic background than the lower-caste applicants that are displacing them. Targeting by caste, however, may lead to the exclusion of other disadvantaged groups. For example, caste-based targeting reduces the overall number of females entering engineering colleges. We find that despite poor entrance exam scores, lower-caste entrants obtain a positive return to admission. Our estimates, however, also suggest that these gains may come at an absolute cost because the income losses experienced by displaced upper-caste applicants are larger than the income gains experienced by displacing lower-caste students. Limited sample sizes in our preferred econometric specifications, however, prevent us from drawing strong conclusions from these labor market findings.  相似文献   
90.
We analyze a comprehensive set of labor economics and industrial relations articles by authorship affiliation (economist vs. noneconomist) and discuss the relative openness of economists to variety in methodology and data sources.  相似文献   
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