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| Registros recuperados: 10 | |
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| Sam, Abdoul G.; Innes, Robert; Khanna, Madhu. |
| EPA-sponsored voluntary pollution reduction programs (VPR) have gained increased prominence in U.S. environmental policy. However, as commitments to these programs are not enforceable by design, the empirical literature has mostly focused on studying the motives for their adoption and their efficacy in curbing pollution. This paper seeks (i) to shed light on the bi-directional links between participation in a VPR and adoption of firm-structured environmental management strategies (EMS), and (ii) the joint impact of VPRs and EMS adoption on the environmental performance of participant firms. Our econometric analysis reveals that participation in the 33/50 program, helped spur the adoption of Total Quality Environment Management (TQEM), which in turn had a... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/21192 |
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| Sam, Abdoul G.; Ker, Alan P.. |
| This paper proposes a nonparametric bias-reduction regression estimator which can accommodate two empirically relevant data environments. The first data environment assumes that at least one of the predictor variables is discrete. In such an empirical framework, a "cell" approach, which consists of estimating a separate regression for each discrete cell has generally been employed. However, the "cell" estimator may be inefficient in that it does not include data from the other cells when estimating the regression function for a given cell. The second data environment assumes that the researcher is faced with a system of regression functions that belong to different experimental units. In each case, the new estimator attempts to reduce estimation error by... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2004 |
URL: http://purl.umn.edu/20417 |
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| Thompson, Stanley R.; Sam, Abdoul G.. |
| The objective of this paper is to investigate the impact of media advertising on the US consumption of imported wine. A panel data of seven countries and twelve years from 1994-2005 is used to estimate the demand function for US wine imports. Our empirical analysis reveals evidence of strong price and advertising effects of domestic and imported wines on imported quantities; the advertising of imported wines significantly increases the quantity of imports while the advertising of domestic wines has a strong depressing effect on imported wine volumes. Our short-run import demand price and advertising elasticity estimates are -0.406 and 0.109 for imports and 0.654 and -0.370 for domestic wines, respectively. Other determinants such as population, real... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: International Relations/Trade; Marketing. |
| Ano: 2008 |
URL: http://purl.umn.edu/6553 |
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| Sam, Abdoul G.; Zheng, Yi. |
| This article proposes a semiparametric two-step procedure for estimating a censored consumer demand system with micro data. The semiparametric estimator considered in the first step is suggested by Klein and Spady (1993). This estimator, used as a counterpart of the probit estimator in a conventional two-step model, does not make any distributional assumptions about the disturbances and so is exempt from model misspecification and plausible heteroscedasticity. In the second step, we motivate the choice of the Almost Ideal Demand System (AIDS) as an economic representation of consumers' demand behavior. Implementing our proposed semiparametric two-step procedure as well as Shonkwiler and Yen (1999)'s two-step model to a household meat consumption dataset... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Censoring; Semiparametric estimator; Consumer demand system; Food expenditures; Demand and Price Analysis. |
| Ano: 2007 |
URL: http://purl.umn.edu/9686 |
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| Carrion-Flores, Carmen E.; Innes, Robert; Sam, Abdoul G.. |
| In the context of the EPA's 33/50 program, we study whether a VPR can prompt firms to develop new environmental technologies that yield future emission reduction benefits. Because pollutant reductions generally require costly reformulations of products and/or production processes, environmental over-compliance induced by a VPR may potentially spur environmental innovation that can reduce these costs. Conversely, a VPR may induce a participating firm to divert resources from environmental research to environmental monitoring and compliance activities that yield short-term benefits in reduced emissions. We find evidence that higher rates of 33/50 program participation are associated with significant reductions in the number of successful environmental... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2006 |
URL: http://purl.umn.edu/21124 |
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| Innes, Robert; Sam, Abdoul G.. |
| We broaden the existing empirical literature on environmental regulation and voluntary pollution abatement programs by testing the effects of implicit boycott threats and a firm's participation in a partnership program on its subsequent regulatory oversight using EPA's 33/50 program as a research experiment. Our results are consistent with the hypothesis of a preemptive self-selection to deter consumer boycotts. The findings also indicate that (1) predetermined corrective actions constitute a significant determinant of voluntary participation and (2) EPA reciprocated to voluntary participation by easing regulatory oversight on participants. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 2003 |
URL: http://purl.umn.edu/21945 |
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| Hernandez, Emilio; Sam, Abdoul G.; Gonzalez-Vega, Claudio; Chen, Joyce J.. |
| The impact of public and private transfers on credit markets has not been sufficiently studied and understanding any spill over effects caused by these transfers may be useful for policy makers. This paper estimates the impact of Conditional Cash Transfers (CCTs) and remittances received by poor households in rural Nicaragua on their decision to request a loan. We find that, on average, CCTs did not affect the request of credit while remittances increased it, controlling for potential endogeneity. We argue the reduction in income risk provided by remittances changes borrowers’ expected marginal returns to a loan and/or their creditworthiness, as perceived by lenders. The successful enforcement of the use of CCTs on long-term investments seems to... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: International Development; D14; F22; O15. |
| Ano: 2009 |
URL: http://purl.umn.edu/49319 |
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| Registros recuperados: 10 | |
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