Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 18
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
A DECOMPOSITION APPROACH TO ASSESS ILUC RESULTS FROM GLOBAL MODELING EFFORTS AgEcon
Witzke, Heinz Peter; Fabiosa, Jacinto F.; Gay, Stephan Hubertus; Golub, Alla A.; Havlik, Petr; Msangi, Siwa; Tokgoz, Simla; Searchinger, Timothy D..
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/91430
Imagem não selecionada

Imprime registro no formato completo
An Economic Assessment along the Jatropha-based Biodiesel Value Chain In India AgEcon
Shinoj, P.; Raju, S.S.; Kumar, Praduman; Msangi, Siwa; Yadav, Pawan; Thorat, Vishal Shankar; Chaudhary, Khyali Ram.
The Government of India had launched the National Biofuel Mission in the year 2003 as an initiative to limit the country’s dependence on crude oil imports. An integral part of this mission is the Biodiesel Blending program and Jatropha, a tree-borne biodiesel yielding crop, is the cornerstone of the program. This study has been specifically designed to carry out economic assessment of the upcoming jatropha-based biodiesel value chain in the country. The study, based on primary data collected from three major jatropha growing states, has observed that jatropha cultivation is an economically viable proposition in the long-run as indicated by favourable values of net present value, internal rate of return and benefit cost ratio. Nevertheless, initial...
Tipo: Journal Article Palavras-chave: Agricultural and Food Policy.
Ano: 2010 URL: http://purl.umn.edu/96913
Imagem não selecionada

Imprime registro no formato completo
Biofuels and Rural Economic Development in Latin America and the Caribbean AgEcon
Falck-Zepeda, Jose Benjamin; Msangi, Siwa; Sulser, Timothy B.; Zambrano, Patricia.
Biofuel expansion is seen as a way to reduce dependence on fossil fuels, as an alternative energy source for transportation and other uses, as a way to reduce Green House Gases, and as way to revitalize the agricultural sector. Very little discussions have been focused on Latin America, except for Brazil. Potential negative impacts re-enforce the need of performing more in depth analysis of the potential impact of biofuels expansion in Latin America and the Caribbean (LAC). Paper estimates biofuels production potential based on current production situation and develops a forward-looking analysis of the long-term impact of biofuels expansion in Latin America and its effects on prices, trade, food security, malnutrition and other indicators using the...
Tipo: Conference Paper or Presentation Palavras-chave: Community/Rural/Urban Development; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/6113
Imagem não selecionada

Imprime registro no formato completo
Biofuels, Growth and Agricultural Development AgEcon
Msangi, Siwa.
Global projections for increasing food demand combined with increasing demand for energy from all sources – including crop-based biofuels – point towards greater stress on food systems and their supporting ecosystems. In many parts of the world, increasing household incomes has translated into increasing demands for energy, of which transportation fuel comprises a fast-growing share. Accompanying the world’s steady population growth is an increasing demand for food and the necessary feedstuffs to fuel the requisite increases in livestock production. The combination of these two trends will inevitably lead to greater stresses and demands on the natural resource base and eco-systems that underlie the world’s food and energy production systems – such as land...
Tipo: Conference Paper or Presentation Palavras-chave: Biofuels; Agriculture; Food Security; Agricultural and Food Policy; Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/51723
Imagem não selecionada

Imprime registro no formato completo
Calibrated Stochastic Dynamic Models for Resource Management AgEcon
Howitt, Richard E.; Reynaud, Arnaud; Msangi, Siwa; Knapp, Keith C..
In this paper we develop a positive calibrated approach to stochastic dynamic programming. Risk aversion, discount rate, and intertemporal substitution preferences of the decision-maker are calibrated by a procedure that minimizes the mean squared error from data on past decisions. We apply this framework to managing stochastic water supplies from Oroville Reservoir, located in Northern California. The calibrated positive SDP closely reproduces the historical storage and releases from the dam and shows sensitivity of optimal decisions to a decision-maker's risk aversion and intertemporal preferences. The calibrated model has average prediction errors that are substantially lower than those from the model with an expected net present value objective.
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2002 URL: http://purl.umn.edu/19620
Imagem não selecionada

Imprime registro no formato completo
Climate change: Impact on agriculture and costs of adaptation AgEcon
Nelson, Gerald C.; Rosegrant, Mark W.; Koo, Jawoo; Robertson, Richard D.; Sulser, Timothy B.; Zhu, Tingju; Ringler, Claudia; Msangi, Siwa; Palazzo, Amanada; Batka, Miroslav; Magalhaes, Marilia Castelo; Valmonte-Santos, Rowena A.; Ewing, Mandy; Lee, David R..
Tipo: Report Palavras-chave: Environmental Economics and Policy; Farm Management.
Ano: 2009 URL: http://purl.umn.edu/57371
Imagem não selecionada

Imprime registro no formato completo
Estimating Disaggregate Production Functions: An Application to Northern Mexico AgEcon
Msangi, Siwa; Howitt, Richard E..
This paper demonstrates a robust method for achieving disaggregation in the estimation of flexible-form farm-level multi-input production functions using minimally-specified data sets. Since our ultimate goal is to address important questions related to the distributional effects of policy changes, we place emphasis on the ability of the model to reproduce the characteristics of the existing production system and to predict the outcomes of these changes at a high level of disaggregation. Achieving this requires the use of farm-level models that are estimated across a wide spectrum of sizes and types, which is often difficult to do with traditional econometric methods, due to limitations of data. The approach to estimating flexible-form production...
Tipo: Conference Paper or Presentation Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2006 URL: http://purl.umn.edu/21080
Imagem não selecionada

Imprime registro no formato completo
Factor Demand, Output Supply Elasticities and Supply Projections for Major Crops of India AgEcon
Kumar, Praduman; Shinoj, P.; Raju, S.S.; Kumar, Anjani; Rich, Karl M.; Msangi, Siwa.
Policy planners face the challenge of formulating suitable agricultural policy by which the required growth in domestic production can be achieved. To attain effective food security policy, one needs reliable empirical knowledge about the degree of responsiveness of factor demand and output supply for commodities. This paper is an attempt in this direction and estimates the factor demand and output supply elasticity for major crops grown in India. These elasticities are used to project the domestic supply of major commodities, viz. rice, wheat, pulse grains, nine major edible oilseeds, and sugarcane under various scenarios with and without acreage expansion and TFP growth. The results of supply projections are compared with the food demand and policy...
Tipo: Journal Article Palavras-chave: Agricultural and Food Policy.
Ano: 2010 URL: http://purl.umn.edu/92090
Imagem não selecionada

Imprime registro no formato completo
Global Agriculture in a Rapidly Changing Environment: Needed Policies for Future Food and Well-being (PowerPoint) AgEcon
Msangi, Siwa.
Tipo: Conference Paper or Presentation Palavras-chave: Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety.
Ano: 2009 URL: http://purl.umn.edu/50582
Imagem não selecionada

Imprime registro no formato completo
Green Revolution Counterfactuals AgEcon
Evenson, Robert E.; Rosegrant, Mark W.; Msangi, Siwa; Sulser, Timothy B..
In this paper, we conduct two “"counterfactual" simulations for the 30-year period 1970-2000-the first holding 1970 crop genetic improvements (CGI) constant and the second presuming the International Agricultural Research Center (IARC) system had not been built. Both these counterfactuals apply to developing countries only. The core estimates on which the counterfactuals are based include country fixed effects , and the key estimates are for the Dietary Energy Sufficiency (DES) equation. DES affects birth rates, death rates, child mortality rates and malnutrition rates, making it possible to “"endogenize”" population growth in developing countries, in the counterfactuals. Reduced DES levels (from reduced CGI contributions) will lead to more births, more...
Tipo: Conference Paper or Presentation Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 2006 URL: http://purl.umn.edu/21363
Imagem não selecionada

Imprime registro no formato completo
Implementing Rural-Urban Disaggregated Food Demand in a Partial Equilibrium Model AgEcon
Mason-D'Croz, Daniel; Magnan, Nicholas; Msangi, Siwa; Leroy, Laetitia.
Global general and partial equilibrium models focused on the agricultural sector can help policy makers do ex-ante analysis by providing a variety of macro-level outcomes, such as changes in flows of international trade, and changes in the supply, demand, and prices of globally traded commodities. IFPRI’s IMPACT model (International Model for Policy Analysis of Agricultural Commodities and Trade) model is one such model. Since its inception nearly 20 years ago the model has evolved to inform increasingly complex and nuanced policy issues, such as the explicit modeling of water use and the productive response of agriculture to climate change. However, on the demand side it has remained a fairly blunt instrument. One oft mentioned shortcoming of global...
Tipo: Conference Paper or Presentation Palavras-chave: Partial Equilibrium Models; Disaggregated Food Demand; IMPACT model; Food Security; Agricultural and Food Policy; Demand and Price Analysis; Food Security and Poverty.
Ano: 2011 URL: http://purl.umn.edu/103859
Imagem não selecionada

Imprime registro no formato completo
Income Distributional Effects of Using Market-Based Instruments for Managing Common Property Resources AgEcon
Msangi, Siwa; Howitt, Richard E..
In the face of growing management problems and conflicts over increasing demands and dwindling or increasingly variable supplies of surface and groundwater, the need for revising the conventional water resource allocation methods has been increasingly felt among natural resource managers and policy makers. For the past 30 years economists have advocated for the application of various types of market-based instruments (MBIs) as an efficient means of effecting the re-allocation water resources among competing uses. While MBIs have been implemented in several countries, they have continued to encounter strong socio-political opposition, due to the impacts imposed on third-parties during transfers and re-allocations, as well as the distributional effects...
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/25247
Imagem não selecionada

Imprime registro no formato completo
Measuring the Gains to Groundwater Management with Recursive Utility AgEcon
Msangi, Siwa.
Replaced with revised version of paper 07/20/05.
Tipo: Conference Paper or Presentation Palavras-chave: Recursive Utility; Dynamic Games; Groundwater Policy; Resource /Energy Economics and Policy; D91; C73; Q25.
Ano: 2005 URL: http://purl.umn.edu/19212
Imagem não selecionada

Imprime registro no formato completo
RECONSTRUCTING DISAGGREGATE PRODUCTION FUNCTIONS AgEcon
Howitt, Richard E.; Msangi, Siwa.
This paper demonstrates a method for reconstructing flexible form production functions using minimal disaggregated data sets. The policy focus of our approach puts emphasis on the ability of the model to reproduce the existing production system and predict the disaggregate outcomes of policy changes. We combine Positive Mathematical Programming (PMP) with Generalized Maximum Entropy (GME) estimation to capture the individual heterogeneity of the local production environment, and allow the reconstructed production function to precisely replicate the input usage and outputs produced in the base year. Since we can generate demand, supply and substitution elasticities from the reconstructed model we can represent a wide range of policy responses. The...
Tipo: Conference Paper or Presentation Palavras-chave: Production Economics.
Ano: 2002 URL: http://purl.umn.edu/19585
Imagem não selecionada

Imprime registro no formato completo
Security Analysis for Agroterrorism: Applying the Threat, Vulnerability, Consequence Framework to Developing Countries AgEcon
Linacre, Nicholas A.; Koo, Bonwoo; Rosegrant, Mark W.; Msangi, Siwa; Falck-Zepeda, Jose Benjamin; Gaskell, Joanne; Komen, John; Cohen, Marc J.; Birner, Regina.
In some developing countries the potential exists for agroterrorism to cause widespread disruption through loss of sustenance, income and production. Defense of agriculture may also be problematic because of the lack stability and basic biosecurity infrastructure for the detection and prevention of diseases or invasive species. Currently new methodological approaches for terrorism risk assessments are being actively explored for resource prioritization. One such methodology for risk based allocation of resources is Threat, Vulnerability, and Consequence (TVC) Analysis. A qualitative application of the TVC framework is used to analyze the risk of agroterrorism in developing countries relative to industrialized countries. The analysis suggests that evidence...
Tipo: Working or Discussion Paper Palavras-chave: Agroterrorism; Terrorism risk analysis; Biosecurity; International Development; International Relations/Trade.
Ano: 2005 URL: http://purl.umn.edu/59238
Imagem não selecionada

Imprime registro no formato completo
Third Party Effects and Asymmetric Externalities in Groundwater Extraction: The Case of Cherokee Strip in Butte County, California AgEcon
Msangi, Siwa; Howitt, Richard E..
While water markets have been shown to be beneficial to users, the transfers made through sales can have serious third-party impacts, as has been addressed in the water resources literature. Potential asymmetries arising from the hydrological characteristics of the groundwater basin could seriously affect the distribution of the impacts resulting from these transfers, when taken into account. In this paper we seek to extend the water resources management literature by examining the depletion problem experienced on the Cherokee Strip, in the hills of Butte County, and account for asymmetric external effects in a model of strategic groundwater pumping. The results of this model show that current ordinance restricting water transfers from Butte County does...
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy; Q25; C7; H23.
Ano: 2006 URL: http://purl.umn.edu/25436
Imagem não selecionada

Imprime registro no formato completo
Understanding Small-Holder Constraints to Jatropha Investment AgEcon
Hill, Ruth Vargas; Msangi, Siwa; Zhang, Wei.
Tipo: Conference Paper or Presentation Palavras-chave: Financial Economics; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/61843
Imagem não selecionada

Imprime registro no formato completo
WATER MANAGEMENT REFORM AND THE CHOICE OF CONTRACTUAL FORM IN RURAL CHINA AgEcon
Huang, Qiuqiong; Rozelle, Scott; Msangi, Siwa; Huang, Jikun; Wang, Jinxia.
Inefficient performance of irrigation systems not only leads to a waste of water resources, but may also affect agriculture production, especially in regions facing a water stress problem. In rural China, only 40% of the water allocated to irrigation is effectively used, a figure much lower than many developed countries (Wang, 2000). Although traditional irrigation technology such as flood irrigation accounts for part of the inefficient use of water, the lack of effort in managing surface irrigation systems are also thought to affect the performance of China's water systems (Wang et al., 2003). In confronting problems with China's irrigation systems, leaders have begun experimenting with changing the institutions that manage water in rural communities....
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/22131
Registros recuperados: 18
Primeira ... 1 ... 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