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181.
Reviva Hasson Anthony Leiman Martine Visser 《The South African journal of economics. Suid-afrikaanse tydskrif vir ekonomie》2007,75(1):66-83
In May 2003 South Africa introduced legislation intended to decrease plastic bag litter. It combined standards and price‐based economic tools in an attempt to reduce the public's demand for plastic bags. This paper analyses the short term effects of the legislation on bag demand. It also provides a background to these regulations and a theoretical overview. The assessment uses bag consumption data from four retailers, each representing a different consumer market. These are analysed, and respective price elasticities calculated. The results suggest that plastic bag demand is relatively price inelastic and imply that instruments utilising price alone, would have limited efficacy. However, the combination of standards and pricing successfully curbed plastic bag use in the short run. Further analysis suggests that the effectiveness of the legislation may be declining over time. 相似文献
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183.
Summary. This paper derives the equilibrium of an infinite-horizon discrete-time CAPM economy in which agents have discounted expected quadratic utility functions. We show that there is an income stream obtainable by trading on the financial markets which best approximates perfect consumption smoothing (called the {\it least variable income stream} or LVI) such that the equilibrium consumption of each agent is some multiple of the LVI and some share of aggregate output. The welfare of agents is a decreasing function of the lack of consumption smoothing achievable, measured by the distance of the LVI from the perpetuity of one unit of income for ever. If in addition the economy has a Markov structure, the LVI, and hence the equilibrium, can be calculated by dynamic programming. When the model is calibrated to US data a striking prediction emerges: the quasi-irrelevance of the bond market. Infinitely-lived agents achieve almost all their desired consumption smoothing by applying carryover strategies to equity, the proportion of agents' portfolios in bonds rarely exceeding 3%. 相似文献
184.
This paper strongly corroborates the widely held claim about the democracy and freedom “deficit” in the Arab world and asks the natural question as to why has the Arab world experienced such a deficit. The estimation results of an extended “modernity” model of democracy (measured by the Polity IV global index) suggest that after controlling for a host of economic, social and historical variables a negative and highly significant Arab dummy effect remains. This suggests, therefore, that the modernization theory does not fully account for the democracy deficit of the Arab world. Controlling for the modernity and other determinants, oil is negatively associated with democracy while the net effect of regional conflicts in the Arab world was negative, suggesting that conflicts in the Arab world promote authoritarianism in contrast with other regions where regional wars have been associated with democratic transitions. Moreover, and very significantly the Arab dummy was no longer significant as a stand alone effect though it remains significant when interacted with regional wars. 相似文献
185.
The provision of health care in Western societies is examined in relation to the arrival of complementary and alternative medicine (CAM) as a serious provider in the latter half of the 20th century. This article examines the underlying components of the increasing uptake of CAM and attempts to cluster health‐care consumers according to their attitudes and motivation toward the use of health‐care products and services. The analysis does not support the idea of a widespread uptake of CAM practitioner treatments on the part of the general public except for particular segments of that public, including the seriously ill. There is also little evidence of exclusive use of CAM for personal health care. On the other hand, there is significant evidence for an uptake of non‐practitioner‐based CAM by wider segments of the population. The findings raise issues regarding the evidence for the efficacy of CAM and the methodology for testing it. These are discussed. © 2004 Wiley Periodicals, Inc. 相似文献
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187.
Elí Samuel González-Trejo 《Journal of Promotion Management》2013,19(4):480-493
Although some articles have tried to address the standardization/adaptation strategies of companies on the internet, there is still a lack of guidance on the issue, especially for companies outside of the United States. To help alleviate this shortage of guidance and provide Mexican web designers, web marketers, and IT managers with some insights into web cultural adaptation, this article conducted a comparative analysis of Mexican based companies’ domestic websites and their U.S. international websites, replicating a cultural adaptation framework from prior literature. Thirteen Mexican based Bolsa Mexicana de Valores (2005) companies were evaluated to test for the cultural adaptation of their Mexican and international websites. A content analysis of 26 Mexican domestic and U.S. international websites reveals non-significant cultural adaptation on the web; however, the results of the web content analysis are similar to those of previous research, which consider Mexican culture to score high in power distance, uncertainty avoidance, masculinity, and high-context cultural dimensions. However, for the collectivistic dimension, the results were opposite to those of previous research, which may suggest a need to develop and test other cultural adaptation frameworks for future research. 相似文献
188.
We introduce a matching model that allows for classical and frictional unemployment. The labor market is dual featuring low-skilled and high-skilled workers and simple and complex jobs. Simple jobs pay a minimum wage, while wages in the complex jobs are determined by Nash bargaining. Opportunities for low-skilled workers are limited to simple jobs; while high-skilled unemployed can apply for both types of jobs, and thereby can accept to be downgraded. We analyze the outcomes of simple job subsidy policies assuming that government budget is balanced through taxes on occupied workers. We first give conditions for the existence and uniqueness of a steady-state equilibrium and we then analyze the effects of different fiscal instruments. We show that in this set-up, increasing simple job subsidies does not necessarily reduce low-skilled unemployment or unemployment spells. By introducing heterogeneous skills and possible downgrading of the high-skilled workers, we show that the effectiveness of such policies in reducing the classical unemployment is decreasing. In fact, any additional classical unemployed re-entering the job market is accompanied by an increasing number of high-skilled workers downgrading to low-skilled jobs. We calibrate the model on French labor market data. It is found that for five low-skilled workers leaving classical unemployment, two high-skilled workers are downgraded. 相似文献
189.
Partial Identification and Bound Estimation of the Average Treatment Effect of Education on Earnings for South Africa 下载免费PDF全文
We partially identify the average treatment effect of education on earnings and non‐parametrically estimate its upper bound for African, Coloured (mixed race) and White males in South Africa. We address endogenous selection into education, cohort effects and endogenous selection into work. Using the September 2007 South African Labour Force Survey, the upper bound estimates are considerably lower than existing parametric point estimates of the return to education. As a lesson, policy makers should focus less on increasing the amount of education obtained by Africans and Coloureds, but rather on measures that can grow the return to existing levels of education. 相似文献
190.
Salima El Kolei 《Metrika》2013,76(8):1031-1081
We study a new parametric approach for particular hidden stochastic models. This method is based on contrast minimization and deconvolution and can be applied, for example, for ecological and financial state space models. After proving consistency and asymptotic normality of the estimation leading to asymptotic confidence intervals, we provide a thorough numerical study, which compares most of the classical methods that are used in practice (Quasi-Maximum Likelihood estimator, Simulated Expectation Maximization Likelihood estimator and Bayesian estimators) to estimate the Stochastic Volatility model. We prove that our estimator clearly outperforms the Maximum Likelihood Estimator in term of computing time, but also most of the other methods. We also show that this contrast method is the most robust with respect to non Gaussianity of the error and also does not need any tuning parameter. 相似文献