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81.
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Children's television advertising is rapidly becoming a major concern to government agencies, citizens' groups and researchers in many areas of the social sciences. To this point there has been little integration of research efforts. This article presents a model of the processing of television advertising by children in order to organize and integrate previous research results and to act as the basis for suggesting future directions for research. The authors indicate that more involvement by advertisers is needed. 相似文献
84.
Geography, insolation, and vitamin D in nineteenth century US African-American and white statures 总被引:1,自引:1,他引:0
Scott Alan Carson 《Explorations in Economic History》2009,46(1):149-159
Using a new source of nineteenth century US state prison records I contrast the biological living conditions of comparable African-Americans and whites. Although blacks and whites today in the US reach similar terminal statures, nineteenth century African-American statures were consistently shorter than those of whites. Greater insolation (vitamin D production) is shown to be associated with taller black and white statures and a considerable share of the stature difference between US blacks and whites was attributable to insolation and vitamin D production. Black statures increased during the antebellum period, while white statures declined. Black and white statures both decreased after the Civil War. Farmers were taller than workers in other occupations, and an alternative explanation for stature variation by social class is considered. 相似文献
85.
Production risk is an inherent characteristic of agriculture and changes in production risk will affect the welfare of risk‐averse producers. Using standard concepts from the literature on uncertainty, we introduce a welfare measure which comprises total factor productivity (TFP), production risk and farmer risk preferences, and which reflects the impact on producer welfare of changes in production technology. An empirical application is carried out using data from a sample of Spanish dairy farms which shows how the positive impact of increases in TFP on welfare can be offset by increases in the risk premium (‘cost of risk’) to the point where welfare may decrease. 相似文献
86.
Alan B. Krueger 《The Journal of economic education》2013,44(3):243-258
The author argues that the recent controversy over the effect of the minimum wage on employment offers an opportunity for teaching introductory economics. Research findings on the minimum wage could be used to motivate alternative models of the labor market, such as monopsony and search models, and to teach students how economists test hypotheses with data. 相似文献
87.
88.
Gyan P. Nyaupane Alan R. Graefe Robert C. Burns 《Leisure Sciences: An Interdisciplinary Journal》2013,35(5):425-442
Equity is a major public concern related to recreation fees on public lands. The purpose of this study was to test a three-dimensional model of equity and to examine the perceptions of equity across demographic segments. Data were collected by a telephone survey with residents (N = 366) of two western states. Confirmatory factor analysis supported the three-dimensional equity model in a recreation fee context. People tended to support democratic equity more than compensatory equity. Greater support was shown for discounted fees for the elderly and persons with disabilities than for discounts for ethnic minorities, low income people, or large families, suggesting the possibility of two sub-dimensions of the compensatory equity construct. Overall, the results do not support that disadvantaged groups seek discounted fees. 相似文献
89.
90.
Stephen M. Holland Robert B. Ditton Alan R. Graefe 《Journal of Sustainable Tourism》2013,21(4):346-351
This paper estimates the quantity of pollutant produced by the Hong Kong hotel industry through diesel oil consumption. A survey of 20 hotels was carried out to collect three years' energy consumption data. Regression analysis indicated that gross floor area was a major and statistically accepted factor in explaining diesel oil consumption. Diesel oil consumption had reduced from the early 1990s and stabilised by the late 1990s. The sulphur dioxide, nitrogen dioxide, carbon dioxide and particulate pollution created by the hotel industry's diesel oil usage from 1990 to 1999 is estimated. The findings indicate that existing green measures and devices are passive and depend on the assimilation of the atmosphere. Environmental costs have stabilised at about HK$54,000 per annum. More proactive approaches to reduce usage and environmental impacts are proposed. 相似文献