Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 133
Primeira ... 1234567 ... Última
Imagem não selecionada

Imprime registro no formato completo
A Binary Logit Estimation of Factors Affecting Adoption of GPS Guidance Systems by Cotton Producers AgEcon
Banerjee, Swagata (Ban); Martin, Steven W.; Roberts, Roland K.; Larkin, Sherry L.; Larson, James A.; Paxton, Kenneth W.; English, Burton C.; Marra, Michele C.; Reeves, Jeanne M..
Binary logit analysis was used to identify the factors influencing adoption of Global Positioning System (GPS) guidance systems by cotton farmers in 11 Mid-south and Southeastern states. Results indicate that adoption was more likely by those who had already adopted other precision-farming practices and had used computers for farm management. In addition, younger and more affluent farmers were more likely to adopt. Farmers with larger farms and with relatively high yields were also more likely to adopt. Education was not a significant factor in a farmer’s decision to adopt GPS guidance systems.
Tipo: Journal Article Palavras-chave: Binary logit; Cotton; GPS guidance system; Marginal effect; Precision farming; Technology adoption; Agribusiness; Crop Production/Industries; Q2; Q16; Q19; Q20; Q24.
Ano: 2008 URL: http://purl.umn.edu/45530
Imagem não selecionada

Imprime registro no formato completo
A Case Study of an NGOs Ecotourism Efforts: Findings Based on a Survey of Visitors to its Tropical Nature Reserve AgEcon
Tisdell, Clement A..
This article outlines the efforts of a small NGO, the Mareeba Wetland Foundation, to conserve nature and conduct tourism at its Mareeba Tropical Savanna Wetland Reserve in northern Queensland. It provides background about the establishment of the reserve and its nature and draws on the results from a survey of visitors to this reserve. It provides a socio-economic profile of visitors, their frequency of visits to it and their knowledge of it prior to visiting. This knowledge is found, on the whole, to be poor. The way in which visitors decided to visit the reserve is also considered as are indicators of the economic surplus obtained from visits. Because for most visitors their visit was an experiential good, doubts are raised about the traditional method...
Tipo: Working or Discussion Paper Palavras-chave: Conservation NGOs; Consumers’ surplus; Ecotourism; Experiential goods; Mareeba Tropical Savanna and Wetland Reserve; Mareeba Wetlands Foundation; National parks; Public economics; Environmental Economics and Policy; Public Economics; Q2; Q5; L83; H30.
Ano: 2010 URL: http://purl.umn.edu/93403
Imagem não selecionada

Imprime registro no formato completo
A Coasian Approach to Efficient Water Allocation of a Transboundary River AgEcon
Willis, David B.; Baker, Justin Scott.
The United States and Mexico recently resolved a decade-old water dispute that required Mexico to repay the accumulated water debt within one year. A Coasian analysis estimates the social welfare gains attainable to each country under an alternative debt repayment scheme that allows repayment over a longer time horizon and in a combination of dollars and water, instead of solely in water. Assuming average water supply conditions, under the agreed 1-year repayment contract, U.S. compensation value is 534% greater and Mexico’s compensation cost is 60% less relative to when compensation is paid exclusively in water.
Tipo: Journal Article Palavras-chave: Coase; Water allocation; Water compensation; Water markets; Agribusiness; Consumer/Household Economics; Environmental Economics and Policy; Q1; Q2.
Ano: 2008 URL: http://purl.umn.edu/46985
Imagem não selecionada

Imprime registro no formato completo
A Flexible Inventory Model for MSW Recycling AgEcon
Louis, Garrick; Shih, Jhih-Shyang.
Most of the United States have laws mandating the recycling of municipal solid waste (MSW). In order to comply, municipalities recycle quotas of materials, without regard to fluctuating prices. An inventory system is proposed that allows municipalities to be sensitive to materials prices as they recycle in accordance with state mandates. A dynamic model is developed; it uses historical secondary material prices as exogenous inputs to minimize the net present value of MSW recycling system cost. The model provides a cost-effective method for municipalities to achieve their MSW recycling targets. The savings is approximately $1.43 per ton of MSW generated based on total MSW management costs of $13.5 per ton. The model also allows one to investigate the...
Tipo: Working or Discussion Paper Palavras-chave: Municipal solid waste; Recycling; Inventory; Optimization; Environmental Economics and Policy; Q2.
Ano: 2002 URL: http://purl.umn.edu/10459
Imagem não selecionada

Imprime registro no formato completo
A Reconsideration of Environmental Federalism AgEcon
Oates, Wallace E..
This paper provides a review and assessment of the debate over environmental federalism-the issue of the roles of different levels of government in environmental management. The paper begins with the presentation of three benchmark cases that provide a framework for thinking about the issue. It then offers a review, first of the theoretical literature and second of some new, provocative empirical literature on the race to the bottom. The paper contends that there remains, under certain circumstances, an important role for decentralized government in the setting of environmental standards and the design of regulatory programs. The central government, in addition to setting standards for "national" pollutants, has a fundamental contribution to make in...
Tipo: Working or Discussion Paper Palavras-chave: Environmental federalism; Environmental management; Environmental policy; Environmental regulation; Environmental Economics and Policy; Q2; H1; H7.
Ano: 2001 URL: http://purl.umn.edu/10460
Imagem não selecionada

Imprime registro no formato completo
A Spatial-Intertemporal Model for Tropical Forest Management Applied to Khao Yai National Park, Thailand AgEcon
Albers, Heidi J..
This paper discusses the application of a spatial-intertemporal model for tropical forest management to Khao Yai National Park in Thailand. This type of model, especially the spatial components, finds different optimal land allocations than do traditional models at empirically relevant levels of benefits. The spatial analysis here suggests that most of this park can be best used as a preserved area and also provides support for expanding the park into an adjacent unpopulated area. The analysis demonstrates that the park's benefits to regional agriculture and villagers are large enough that preservation can proceed without international support, and that local people, as a group, have incentives to maintain most of the area as preserved land. Although the...
Tipo: Working or Discussion Paper Palavras-chave: Parks; Protected areas; People-park conflict; Spatial; Biodiversity; Option value; Resource /Energy Economics and Policy; Q2; Q15; O13.
Ano: 2001 URL: http://purl.umn.edu/10751
Imagem não selecionada

Imprime registro no formato completo
Air Emissions of Ammonia and Methane from Livestock Operations: Valuation and Policy Options AgEcon
Shih, Jhih-Shyang; Burtraw, Dallas; Palmer, Karen L.; Siikamaki, Juha.
The animal husbandry industry is a major emitter of methane, which is an important greenhouse gas. The industry is also a major emitter of ammonia, which is a precursor of fine particulate matter, arguably the number-one environment-related public health threat facing the nation. We present an integrated process model of the engineering economics of technologies to reduce methane and ammonia emissions at dairy operations in California. Three policy options are explored: greenhouse gas offset credits for methane control, particulate matter offset credits for ammonia control, and expanded net metering policies to provide revenue for the sale of electricity generated from captured methane gas. Individually, any of these policies appears to be sufficient to...
Tipo: Working or Discussion Paper Palavras-chave: Methane; Ammonia; Carbon dioxide; Greenhouse gases; Climate change; Offset; Particulate matter; Net metering; Environmental policy; CAFO; Manure management; Biodigester; Electricity; Global warming; Cost-benefit; Incentive approach; Livestock Production/Industries; Q2; Q4; Q53.
Ano: 2006 URL: http://purl.umn.edu/10749
Imagem não selecionada

Imprime registro no formato completo
Allocation of CO2 Emissions Allowances in the Regional Greenhouse Gas Cap-and-Trade Program AgEcon
Burtraw, Dallas; Palmer, Karen L.; Kahn, Danny.
Cap-and-trade programs for air emissions have become the widely accepted, preferred approach to cost-effective pollution reduction. One of the important design questions in a trading program is how to initially distribute the emissions allowances. Under the Acid Rain program created by Title IV of the Clean Air Act, most emissions allowances were distributed to current emitters on the basis of a historic measure of electricity generation in an approach known as grandfathering. Recent proposals have suggested two alternative approaches: allocation according to a formula that is updated over time according to some performance metric in a recent year (the share of electricity generation or something else) and auctioning allowances to the highest bidders....
Tipo: Working or Discussion Paper Palavras-chave: Emissions trading; Allowance allocations; Electricity; Air pollution; Auction; Grandfathering; Generation performance standard; Output-based allocation; Cost-effectiveness; Greenhouse gases; Climate change; Global warming; Carbon dioxide; Sulfur dioxide; Nitrogen oxides; Mercury; Environmental Economics and Policy; Q2; Q25; Q4; L94.
Ano: 2005 URL: http://purl.umn.edu/10650
Imagem não selecionada

Imprime registro no formato completo
Allocation of Orbit and Spectrum Resources for Regional Communications: What's at Stake? AgEcon
MacAuley, Molly K..
Contentious debate surrounds allocation of the geostationary orbit and electromagnetic spectrum, two resources used by communications satellites. An extensive economics literature alleges that the nonmarket administrative allocative procedures now in place are highly inefficient, but no research has empirically estimated the welfare loss. This paper develops a conceptual framework and a computerized model to estimate the economic value of the resources, the size and distribution of welfare costs associated with the present regulatory regime, and the potential gains from more market-like allocation.
Tipo: Working or Discussion Paper Palavras-chave: Outer space; Communications satellites; Pricing natural resources; Community/Rural/Urban Development; H4; Q2.
Ano: 1997 URL: http://purl.umn.edu/10746
Imagem não selecionada

Imprime registro no formato completo
ANALYZING NEGOTIATION APPROACHES IN NATURAL RESOURCE MANAGEMENT - A CASE STUDY OF CROP-LIVESTOCK CONFLICTS IN SRI LANKA AgEcon
Birner, Regina.
Participatory approaches in natural resource management are increasingly being criticized for their tendency to neglect power relations and conflicts of interests. Negotiation approaches have been proposed as a strategy to overcome such shortcomings. Using the case of negotiations on crop-livestock conflicts in Sri Lanka as an empirical example, this paper proposes to apply the concept of political capital in combination with game theoretical modeling for an analysis of negotiation processes in natural resource management. The model serves to analyze both the incentive structure of the resource users, who are motivated by economic incentives, and the incentive structure of political decision-makers, who are motivated by political interests. The crucial...
Tipo: Conference Paper or Presentation Palavras-chave: Natural resource management; Negotiation; Political capital; Extensive form game; Sri Lanka; Resource /Energy Economics and Policy; Q2.
Ano: 2003 URL: http://purl.umn.edu/25859
Imagem não selecionada

Imprime registro no formato completo
Aquaculture and Fisheries Interactions: Implications for the Global Supply of Fish AgEcon
Arnason, Ragnar.
Aquaculture, or more generally fish farming, and fisheries interact in several different ways. First, many types of fish farming require fish products as inputs, mostly for feeding purposes. Second, farmed fish and wild fish products compete in fish markets with consequences for both the industry and, of course, consumers. Third, fish farming generates various types of polluting agents that may affect wild fish stocks and their habitat. Several other interactions exist. This paper is primarily concerned with the implications of the first of these interactions, namely the input relationships, for the overall supply of fish products in the future. To the extent that the fish farming industry demands wild fish products such as fish meal, fish oil, etc....
Tipo: Conference Paper or Presentation Palavras-chave: Aquaculture; Fisheries; Aquaculture and fisheries interactions; Global supply of fish; Livestock Production/Industries; Q0; Q1; Q2.
Ano: 2005 URL: http://purl.umn.edu/55996
Imagem não selecionada

Imprime registro no formato completo
Assessing the impact of U.S. ethanol market shocks on global crude oil and U.S. gasoline: A structural VAR approach AgEcon
McPhail, Lihong Lu.
Tipo: Conference Paper or Presentation Palavras-chave: Structural VAR; Ethanol; Crude oil; Gasoline; Shocks; Agricultural and Food Policy; Environmental Economics and Policy; Q1; Q2; Q4.
Ano: 2010 URL: http://purl.umn.edu/61136
Imagem não selecionada

Imprime registro no formato completo
Bang for the Buck: Cost-Effective Control of Invasive Species with Different Life Histories AgEcon
Buhle, Eric; Margolis, Michael; Ruesink, Jennifer L..
Strategies for controlling invasive species can be aimed at any or all of the stages in the life cycle. In this paper we show how to combine biological data on population dynamics with simple economic data on control cost options to determine the least costly set of strategies that will halt an invasion. We then apply our methods to oyster drills (Ocinebrellus inornatus), an economically important aquaculture pest that has been accidentally introduced worldwide. If the costs of intervention were the same across life stages, extermination of adults would be an inefficient way to control species with the population dynamics characteristics of invaders. In the oyster drill case, however, efficient control targets adults because they are much easier to find.
Tipo: Working or Discussion Paper Palavras-chave: Invasive species; Bioeconomics; Control strategies; Environmental Economics and Policy; Q10; Q2; Q22.
Ano: 2004 URL: http://purl.umn.edu/10793
Imagem não selecionada

Imprime registro no formato completo
BEHAVIOURS OF CONSERVATION ORGANIZATIONS AND THEIR ENVIRONMENTAL IMPLICATIONS. Analysis based on New (and not so new) Institutional Economics AgEcon
Tisdell, Clement A..
This article draws mostly (but not entirely) on new institutional economics to consider the likely behaviours of non-government conservation organizations and the implications of these behaviours for biodiversity conservation. It considers how institutional factors may result in behaviour of conservation NGOs diverging from their objectives, including their support for biodiversity conservation; examines aspects of rent capture and conservation alliances; specifies social factors that may restrict the diversity of species supported by NGOs for conservation; considers bounded rationality in relation to the operation of conservation NGOs; and using game theory, shows how competition between NGOs for funding can result in economic inefficiencies and narrow...
Tipo: Working or Discussion Paper Palavras-chave: Australia; Biodiversity conservation; Bounded rationality; Civil society; Common Agricultural Policy; European Union; Landcare; Mixed goods; New institutional economics; New Zealand; NGOs; Principal-and-agent problem; Political acceptability; Environmental Economics and Policy; Institutional and Behavioral Economics; Political Economy; Q00; Q2; Q5; Q57; Z13.
Ano: 2008 URL: http://purl.umn.edu/6185
Imagem não selecionada

Imprime registro no formato completo
Bid Design and its Influence on the Stated Willingness to Pay in a Contingent Valuation Study AgEcon
Carmona-Torres, Carmen; Calatrava-Requena, Javier.
The CV method estimate the monetary value that specific changes in the provision of goods and services represent for society, which is asked for their Willingness To Pay (WTP) for it, according to their budget and individual preferences, in a survey. The applications of CV are a source of information to important public decision-making. Therefore, it seems to be a desirable objective for a CV study to strive to detect and reduce, as far as possible, the bias affecting the elicited values. In the present work, the starting point bias in an application to the case study of the conservation of the Iberian Lynx in Spain is analyzed. This bias is caused by the potential influence of the bid values offered to the interviewees on their stated preferences. Three...
Tipo: Conference Paper or Presentation Palavras-chave: Contingent valuation; Starting point bias; Bid design; Dichotomous choice; Openended question; Iberian Lynx; Resource /Energy Economics and Policy; H4; Q2; Q5; Q57.
Ano: 2006 URL: http://purl.umn.edu/25367
Imagem não selecionada

Imprime registro no formato completo
Biological Limits on Agricultural Intensification: An Example from Resistance Management AgEcon
Laxminarayan, Ramanan; Simpson, R. David.
When the application of pesticides places selective evolutionary pressure on pest populations, it can be useful to plant refuge areas-crop areas intended to encourage the breeding of pests that are susceptible to the pesticide. Renewed interest in refuge areas has arisen with recent advances in biotechnology and genetically modified (GM) crops. In this paper, we use a simple model of the evolution of pest resistance to characterize the socially optimal refuge strategy for managing pest resistance. We demonstrate some interesting analogies with other models of renewable resource management, such as those of fisheries. Among the analogous results are findings that maintaining what we might call "maximal sustainable susceptibility" is typically not...
Tipo: Working or Discussion Paper Palavras-chave: Pest resistance; Biotechnology; Optimization; Research and Development/Tech Change/Emerging Technologies; Q1; Q2.
Ano: 2000 URL: http://purl.umn.edu/10914
Imagem não selecionada

Imprime registro no formato completo
Biomass Supply for Biofuel Production: Estimates for the United States and Canada AgEcon
Kumarappan, Subbu; Joshi, Satish V.; MacLean, Heather.
Published in BioResources, Volume 4, Number 3, 2009, Pages 1070-1087.
Tipo: Journal Article Palavras-chave: Biomass Supply; Resource Assessment; Lignocellulosic Biomass; Crop Production/Industries; Demand and Price Analysis; Production Economics; Resource /Energy Economics and Policy; Q42; Q11; Q2; Q20; Q29.
Ano: 2009 URL: http://purl.umn.edu/51427
Imagem não selecionada

Imprime registro no formato completo
Buying Time: Real and Hypothetical Offers AgEcon
Smith, V. Kerry; Mansfield, Carol.
This paper provides the results of a field test of contingent valuation estimates within a willingness to accept framework. Using dichotomous choice questions in telephone mail-telephone interviews, we compare responses to real and hypothetical offers to survey respondents for the opportunity to spend time in a second set of interviews on an undisclosed topic. Five hundred and forty people were randomly split between the real and hypothetical treatments. Our findings indicate no significant differences between people's choices with real and hypothetical offers. Choice models indicate the size of the offer and income were significant determinants of respondents' decisions, and these models were not significantly different between real and hypothetical offers.
Tipo: Working or Discussion Paper Palavras-chave: Contingent value; Real and hypothetical offer; Willingness to accept; Experiment; Institutional and Behavioral Economics; C93; D12; Q2.
Ano: 1996 URL: http://purl.umn.edu/10719
Imagem não selecionada

Imprime registro no formato completo
Captive insurance companies and the management of non-conventional corporate risks AgEcon
Lesourd, Jean-Baptiste; Schilizzi, Steven.
We examine under what conditions setting up a captive insurance company with reinsurance is an optimal solution for risk-averse firms when the insured firm, the insurer and the reinsurer do not know the probability distribution of some risks, and have conflicting estimates of this distribution.
Tipo: Working or Discussion Paper Palavras-chave: Corporate insurance; Reinsurance; Uncertainty; Ambiguity; Non-conventional risks; Captive insurance companies; Risk and Uncertainty; D81; G22; Q2.
Ano: 2011 URL: http://purl.umn.edu/100886
Imagem não selecionada

Imprime registro no formato completo
Climate Change and Agriculture: Economic Impacts AgEcon
Antle, John M..
Tipo: Journal Article Palavras-chave: Environmental Economics and Policy; Q1; Q2; Q3; Q4.
Ano: 2008 URL: http://purl.umn.edu/94495
Registros recuperados: 133
Primeira ... 1234567 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional