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51.
Blair Little Americo Albala Professor Bela Gold Professor Robert E. Rothberg Professor K. Bradley Paxton Manager C. Merle Crawford Professor Edgar Pessemier Professor David Cullwick Professor Robert G. Cooper Professor Richard N. Foster Director Roland W. Schmitt Senior Vice President 《Journal of Product Innovation Management》1984,1(1):56-66
What's happening in the world of product innovation? What are the tough issues that managers are facing? And what's going to happen in the remaining years of this decade? In this article, several members of the Editorial Board of The Journal of Product Innovation Management offer their ideas about where the important problems lie. This is the fodder for a good round table discussion and through the medium of this journal we'll engage in such a discussion in this and a subsequent issue. 相似文献
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Do liquidity measures measure liquidity? 总被引:1,自引:0,他引:1
Given the key role of liquidity in finance research, identifying high quality proxies based on daily (as opposed to intraday) data would permit liquidity to be studied over relatively long timeframes and across many countries. Using new measures and widely employed measures in the literature, we run horseraces of annual and monthly estimates of each measure against liquidity benchmarks. Our benchmarks are effective spread, realized spread, and price impact based on both Trade and Quote (TAQ) and Rule 605 data. We find that the new effective/realized spread measures win the majority of horseraces, while the Amihud [2002. Illiquidity and stock returns: cross-section and time-series effects. Journal of Financial Markets 5, 31–56] measure does well measuring price impact. 相似文献
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This study analyses how market imperfections affect land productivity in a degraded low‐potential cereal‐livestock economy in the Ethiopian highlands. A wide array of variables is used to control for land quality in the analysis. Results of three different selection models were compared with least squares models using the HC3 heteroskedasticity‐consistent covariance matrix estimator. Market imperfections in labour and land markets were found to affect land productivity. Land productivity was positively correlated with household male and female labour force per unit of land. Female‐headed households achieved much lower land productivity than male‐headed households. Old age of household heads was also correlated with lower land productivity. Imperfections in the rental market for oxen appeared to cause overstocking of oxen by some households. Conservation technologies had no significant positive short‐run effect on land productivity. The main results were consistent across the different econometric models. 相似文献
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Mette Wik Tewodros Aragie Kebede Olvar Bergland Stein T. Holden 《Applied economics》2013,45(21):2443-2451
Attitudes towards risk are measured for households in Northern Zambia using an experimental gambling approach with real payoffs that at maximum were equal to 30% of average total annual income per capita. The results of the experiment show decreasing absolute risk aversion and increasing partial risk aversion. Determinants of risk aversion are investigated using random effects interval regression model exploiting the panel data structure of the repeated experiments. Wealth indicator variables are found to be significant, and partial relative risk aversion decreases as wealth increases. Females are found to be more risk averse than males. 相似文献
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Robert Haveman Karen Holden Barbara Wolfe Paul Smith Kathryn Wilson 《Empirical Economics》1999,24(4):571-598
We track the level of economic well-being of the population of men who began receiving Social Security Disability Insurance
benefits in 1980–81 from the time just after they became beneficiaries (in 1982) to 1991. We present measures of the economic
well-being of disabled individuals and their nondisabled peers as indicators of the relative economic position of these two
groups. These measures also provide an intertemporal comparison of well-being and hardship as disabled persons and their nondisabled
peers age and retire. We first show several economic well-being indicators for new male recipients of disability benefits
in 1982 and 1991. We then compare their economic position to that of a matched group of nondisabled males with sufficient work histories to have been disability-insured. Because labor market changes over this decade
have led to a relative deterioration in the position of younger and less-educated workers, we compare men with disabilities
to those without disabilities and distinguish different age and educational levels within the groups. We conclude by assessing
the antipoverty effectiveness of Social Security income support for both younger and older male SSDI recipients.
First version received: May 1998/final version received: July 1999 相似文献
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