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81.
Helen Slater Neil M. Davies Simon Burgess 《Oxford bulletin of economics and statistics》2012,74(5):629-645
Using a unique primary dataset for the UK, we estimate the effect of individual teachers on student outcomes, and the variability in teacher quality. This links 7,305 pupils to the individual teachers who taught them, in each of their compulsory subjects in the high‐stakes exams at age 16. We use point‐in‐time fixed effects and prior attainment to control for pupil heterogeneity. We find considerable variability in teacher effectiveness, a little higher than the estimates found in the few US studies. We also corroborate recent findings that observed teachers’ characteristics explain very little of the differences in estimated teacher effectiveness. 相似文献
82.
Detection of structural change is a critical empirical activity, but continuous ‘monitoring’ for changes in real time raises well‐known econometric issues that have been explored in a single series context. If multiple series co‐break then it is possible that simultaneous examination of a set of series helps identify changes with higher probability or more rapidly than when series are examined on a case‐by‐case basis. Some asymptotic theory is developed for maximum and average CUSUM detection tests. Monte Carlo experiments suggest that these both provide an improvement in detection relative to a univariate detector over a wide range of experimental parameters, given a sufficiently large number of co‐breaking series. This is robust to a cross‐sectional correlation in the errors (a factor structure) and heterogeneity in the break dates. We apply the test to a panel of UK price indices. Copyright © 2011 John Wiley & Sons, Ltd. 相似文献
83.
Simon Collinson 《Entrepreneurship & Regional Development》2013,25(3):217-244
This paper examines the emergence of small indigenous software companies in Scotland, focusing on the strengths and weaknesses of the region's socio-economic infrastructure as a foundation for innovative new business ventures. Following a brief review of some of the accepted wisdom on high-tech start-ups and regional economic development the paper provides some background information on the Scottish region, comparing new firms in the software industry with the foreign multinationals that dominate the local IT industry. A framework - the ‘sociotechnical constituencies’ approach - is then proposed that allows the author to examine networks of specialist knowledge that underlie new business development. Agglomeration effects and the influence of ‘clusters’ of complementary types of knowledge, expertise and innovative competencies at the regional level are at the heart of the analysis. The framework is applied to a sample of local firms, looking at how ‘learning’ via sociotechnical networks underlies their evolution. Policy-makers' attempts to boost the region's new business birth rate and promote the hoped-for ‘silicon glen’ effect are viewed in the light of the study's findings. 相似文献
84.
The effects of air quality regulations on the location decisions of pollution-intensive manufacturing plants 总被引:1,自引:1,他引:0
This research examines the effects of the 1977 Clean Air Act Amendments (CAAA) on the location decisions of pollution-intensive
manufacturing plants. We develop a panel data set to analyze plant births of polluting manufacturers over time as a function
county-level attainment status of the federal standard for ozone pollution. We find that more stringent county-level environmental
regulations impact pollution-intensive capital flows through deterring new plant births. We also find that the impact of stricter
regulations varies by pollution-intensity of manufacturers, with results suggesting that federal guidelines have a greater
impact on high pollution intensive manufacturers than more moderate polluters.
相似文献
85.
Simon Forster 《Development Southern Africa》1998,15(2):267-285
Most contemporary economic theories upon which conventional national accounting is based regard man‐made assets as productive capital to be depreciated against the value of production. Such production, without replenishment or renewal of the asset or capital stock, is not sustainable. Natural resource assets, however, are not valued in the same way. There is no accounting mechanism to reflect the decrease in potential future pro duction as the resource diminishes or deteriorates. In 1993, the United Nations adopted its guidelines for a ‘System of Integrated Environmental and Economic Accounting’ (SEEA), which allows for the adjustment of the System of National Accounts (SNA) for natural asset stripping and degradation, providing a format for national accounting which assesses the viability and sustainability of economic growth. The concept of an SEEA for South Africa was pursued in 1994 as a pilot study. The framework to be devel oped was termed the South African National Economic Environmental Planning (SANEEP) model. The framework can be used to predict the environmental impact, in terms of natural resource use and degradation, of economic growth, both nationally and at the sectoral level. In addition, it can be used to test the sectoral economic impact, and thus the desirability of certain types of environmental economic instruments such as pol lution taxes, or the imposition of royalties on mineral extraction. Hence, the SANEEP framework has the potential to become a broad‐based, integrated environmental and economic planning tool. This article describes the SANEEP model, its information requirements and applications. 相似文献
86.
87.
Business ethics: a SWOT exercise 总被引:1,自引:0,他引:1
Simon Webley 《Business ethics (Oxford, England)》2001,10(3):267-271
This paper reflects on the present state of business ethics. The question has become more complex in an era of globalisation: cross‐border activities make it particularly difficult for companies to formulate effective ethical programmes which are true to core corporate values. The author presents his reflection in terms of a SWOT analysis, examining the strengths, weaknesses, opportunities and threats likely to be experienced by business ethics in the new millennium. He concludes that the challenge for business ethics is to work for global agreement on common values and common approaches to issues of integrity and trust in global business. 相似文献
88.
Consumer arbitrage affects international pricing in several ways. If all consumers face the same arbitrage costs, a monopolist's profit increases with arbitrage costs, and world welfare declines with them (if output does not rise). If arbitrage costs differ across consumers, a monopolist may sell in a second country even if there is no local demand—it can use the second country to discriminate across consumers in the first country. Again, world welfare typically falls with arbitrage costs. When there is also local demand in the second country, world welfare may be increasing in arbitrage costs, even if output falls. 相似文献
89.
90.
This paper argues that life satisfaction data can be used to value natural disasters. We discuss the strengths of this approach, compare it to traditional methods and apply it to estimate and monetize utility losses caused by floods in 16 European countries between 1973 and 1998. Using combined cross-section and time-series data, we find a negative impact of floods on life satisfaction that is sizeable, robust and significant. The estimates are comparable to price discounts found in housing markets. In an exploratory analysis, we find that risk transfer mechanisms such as mandatory insurance have large mitigating effects. 相似文献