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Registros recuperados: 33
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A standard computable general equilibrium (CGE) model in GAMS AgEcon
Lofgren, Hans; Harris, Rebecca Lee; Robinson, Sherman.
Over the past decade, the increasing power and reliability of microcomputers and the development of sophisticated software designed specifically for use with them has led to significant changes in the way quantitative food policy analysis is conducted. These changes cover most aspects of the analysis, ranging from the collections and analysis of socioeconomic data to the conduct of model-based policy simulations. The venue of the computations has shifted from off-site mainframes dependent on highly trained operators and significant capital investment in supporting equipment, to desktop and laptop computers dependent only on the occasional availability of electricity. This means that it is now feasible to quickly transfer new techniques between IFPRI and...
Tipo: Book Palavras-chave: Agriculture; Economic aspects; Mathematical models; Food supply; Mathematical models; Equilibrium (Economics); Mathematical models; Research Methods/ Statistical Methods.
Ano: 2002 URL: http://purl.umn.edu/42483
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Agricultural Protection in OECD Countries: Its Cost to Less-Developed Countries AgEcon
Valdes, Alberto; Zietz, Joachim A..
Many less-developed countries (LDCs) are finding it increasingly difficult to obtain the foreign exchange to pay for growing imports of basic food staples as well as the capital goods and raw materials necessary for their growth and modernization. Agricultural performance particularly is affected by a country’s capacity to import fertilizers and other agricultural inputs. Traditionally agriculture for developing countries and is a logical place to turn for increased earnings. The extent to which agricultural exports can be increased affects the patterns of output growth as well as the allocations of resources to crop-specific research and other inputs. In addition, increasing agricultural exports can lead to an increase in the level of income and...
Tipo: Report Palavras-chave: Underdeveloped areas; Farm produce; Commerce; Food supply; Organization for Economic Cooperation and Development; Commercial policy; Agricultural and Food Policy; International Relations/Trade.
Ano: 1980 URL: http://purl.umn.edu/42219
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Agriculture, Population, Land and Water Scarcity in a Changing World – The Role of Irrigation AgEcon
Sauer, Timm; Havlik, Petr; Schneider, Uwe A.; Kindermann, Georg E.; Obersteiner, Michael.
Fertile land and fresh water constitute two of the most fundamental resources for food production. These resources are affected by environmental, political, economic, and technical developments. Regional impacts may transmit to the world through increased trade. With a global forest and agricultural sector model, we quantify the impacts of increased demand for food due to population growth and economic development on potential land and water use. In particular, we investigate producer adaptation regarding crop and irrigation choice, agricultural market adjustments, and changes in the values of land and water.
Tipo: Conference Paper or Presentation Palavras-chave: Irrigation; Food supply; Integrated assessment; Water use intensity; Agricultural adaptation; Land scarcity; Partial equilibrium model; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/44271
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America's Eating Habits: Changes and Consequences AgEcon
Individual chapters in this book provide different perspectives on the nutrition problems in the United States: what are the economic costs associated with unhealthy eating patterns; how do dietary patterns compare with dietary recommendations; how do national income and prices, advertising, health claims, and trends in eating away from home affect nutrient intake; how much do people know about nutrition and how does nutrition knowledge and attitudes affect intake of fats and cholesterol; how do different government programs and regulations influence food expenditures and consumption; what are some public and private efforts to improve healthy eating; and what are potential impacts of healthier eating on domestic agriculture.
Tipo: Report Palavras-chave: Diet; Nutrition; Health; Eating patterns; Nutrition education; Nutrition knowledge; Dietary guidelines; Food guide pyramid; Food supply; Food consumption; Food assistance programs; School lunch; Food away from home; Advertising; Health claims; Nutrition labeling; Agriculture; Economic costs; Healthy Eating Index; Healthy People 2000; Food Consumption/Nutrition/Food Safety.
Ano: 1999 URL: http://purl.umn.edu/33604
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Climate change and agroecosystems: the effect of elevated atmospheric CO2 and temperature on crop growth, development, and yield Ciência Rural
Streck,Nereu Augusto.
The amount of carbon dioxide (CO2) of the Earth´s atmosphere is increasing, which has the potential of increasing greenhouse effect and air temperature in the future. Plants respond to environment CO2 and temperature. Therefore, climate change may affect agriculture. The purpose of this paper was to review the literature about the impact of a possible increase in atmospheric CO2 concentration and temperature on crop growth, development, and yield. Increasing CO2 concentration increases crop yield once the substrate for photosynthesis and the gradient of CO2 concentration between atmosphere and leaf increase. C3 plants will benefit more than C4 plants at elevated CO2. However, if global warming will take place, an increase in temperature may offset the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Global warming; Photosynthesis; Agriculture; Food supply.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782005000300041
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Commercialization of Agriculture Under Population Pressure: Effects on Production, Consumption, and Nutrition in Rwanda AgEcon
von Braun, Joachim; de Haen, Hartwig; Blanken, Juergen.
Rapid population growth in agroecologies that are already under high population pressure poses a major challenge for development policy. It becomes an even greater challenge in complex agroecologies where little new technology for rapid agricultural expansion is available. The mountain zones of the Zaire-Nile Divide in Central Africa present an example of such a challenging environment where agriculture has encroached onto marginal zones, that is, water catchment areas and the last tropical forests of the area. This study by von Braun, de Haen, and Blanken highlights the potentials of agricultural development for the employment, income, and consumption of the poor, but also stresses that nonagricultural rural growth and employment expansion are key to...
Tipo: Report Palavras-chave: Agriculture and State; Rwanda; Produce trade; Government policy; Exports; Food supply; Nutrition policy; Population; Food Consumption/Nutrition/Food Safety; International Development.
Ano: 1991 URL: http://purl.umn.edu/42154
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Consequences of Deforestation for Women’s Time Allocation, Agricultural Production, and Nutrition in Hill Areas of Nepal AgEcon
Kumar, Shubh K.; Hotchkiss, David.
In the face of growing concerns about the environment, policy makers in developing countries find themselves increasingly pressured to choose between environmental deterioration in the long run and the growing demands of poor populations in the short run. Some environmentalists point to new technology –irrigation, fertilizer, and pesticides- as the basis of ecological decay in rural areas. A number of studies have shown, instead, that expanding farm yields in less fragile area through modern technology offers a viable alternative to stripping the land to expand crop area in marginal soils. In the hill areas of Nepal, as many developing countries, women’s work is the key not only to the functioning of the household but also a necessary supply of field...
Tipo: Report Palavras-chave: Women agriculture laborers; Nepal; Agricultural productivity; Deforestation; Economic aspects; Time management; Women fuelwood gatherers; Food supply; Consumer/Household Economics; Labor and Human Capital; Resource /Energy Economics and Policy.
Ano: 1988 URL: http://purl.umn.edu/42172
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Famine in Ethiopia: Policy Implications of Coping Failure at National and Household Levels AgEcon
Webb, Patrick; von Braun, Joachim; Yohannes, Yisehac.
This study argues that famines are preventable. What was once a universal threat to human life is now primarily in Sub-Saharan Africa. Africa is likely to be the only continent to experience a continued high level of famine mortality during the 1990s, as well as an increase in absolute poverty. Therefore, the current challenge facing policymakers and research organizations such as IFPRI is to reduce the negative effects of famine in Africa and to lay the foundations for its longer- term eradication. This research by Patrick Webb, Joachim von Braum, and Yisehac Yohannes was designed to contribute to a better understanding of the root causes of famine and thereby to identify appropriate policies and projects for famine mitigation. As part of a larger IFPRI...
Tipo: Report Palavras-chave: Famines; Ethiopia; Droughts; Government policy; Food supply; Agricultural and Food Policy.
Ano: 1992 URL: http://purl.umn.edu/37973
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Food Insecurity in Sub-Saharan Africa: New Estimates from Household Expenditure Surveys AgEcon
Smith, Lisa C.; Alderman, Harold; Aduayom, Dede.
Reducing food insecurity in the developing world continues to be a major public policy challenge, and one that is complicated by lack of information on the location, severity, and causes of food insecurity. Such information is needed to properly target assistance, evaluate whether progress is achieved, and develop appropriate interventions to help those in need. This research report explores a new method of measuring food insecurity using food data collected as part of household expenditure surveys. Such surveys are routinely undertaken by numerous national governments throughout the developing world, but in the past the resulting food data remained largely unexploited for the purposes of measuring food insecurity. Using data from 12 Sub-Saharan African...
Tipo: Report Palavras-chave: Food supply; Africa; Sub-Saharan; Food Security and Poverty.
Ano: 2006 URL: http://purl.umn.edu/37885
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Food security: a mean variance approach AgEcon
Adelman, Irma; Berck, Peter; Gordon, Kathryn.
Tipo: Working or Discussion Paper Palavras-chave: Economic conditions; Food supply; Food Security and Poverty.
Ano: 1983 URL: http://purl.umn.edu/43305
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Food Security in Southwest Pacific Island Countries; Proceedings of a Workshop Held in Sydney, Australia, December 12-13, 2000 AgEcon
Simatupang, Pantjar; Fleming, Euan M..
This proceedings is a record of a regional workshop on "Food Security in the Southwest Pacific Island Countries", convened to discuss the findings and strategies achieved in a two-year research project "Food Security Strategies for Selected South Pacific Island Countries". The national experts of the participating countries: Fiji, Papua New Guinea, Tonga and Vanuatu, presented reports of their country studies and the commentators from each country provided additional information.
Tipo: Report Palavras-chave: Food supply; Food security; Food Security and Poverty.
Ano: 2001 URL: http://purl.umn.edu/32711
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Foodgrain Supply, Distribution, and Consumption Policies within a Duel Pricing Mechanism: a Case Study of Bangladesh AgEcon
Ahmed, Raisuddin.
Conflict between the short run welfare of poor consumers and agricultural production incentives creates some of the most difficult policy issues facing developing countries. Resulting policy option constraints are particularly severe in very low income countries. The conflict may on the one hand impede the growth in al production essential to improve long term welfare of low income consumers, and on the other hand restrain policies to increase consumption, which in the long run is essential to the success of the measures taken to increase production. The widely observed phenomenon of urban bias in food price policy is itself a product of the nature of low income societies and of this complex conflict. This research by Raisuddin Ahmed delineates and...
Tipo: Report Palavras-chave: Food supply; Bangladesh; Rice; Marketing; Prices; Agricultural and Food Policy; Crop Production/Industries.
Ano: 1979 URL: http://purl.umn.edu/42223
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Global Environmental Change And Food Provision In Southern Africa: Explorations For A Possible Gecafs Research Project In Southern Africa OceanDocs
Arntzen, J.; Muchero, M.; Dube, P..
This report is the result of a brief study that has been carried out in the period December 2003 to February 2004 by Jaap Arntzen, Pauline Dube and Martin Muchero for the Programme Office of the Global Environmental Change and Food Systems Programme,UK.
Tipo: Other Palavras-chave: Environmental impact; Climate change; Food supply; Http://aims.fao.org/aos/agrovoc/c_35367; Http://aims.fao.org/aos/agrovoc/c_3029.
Ano: 2004 URL: http://hdl.handle.net/1834/691
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Globalization of food and agriculture and the poor AgEcon
von Braun, Joachim; Diaz-Bonilla, Eugenio.
The economic impact of globalization, particularly on poverty, and the changes in agri-food markets have received much attention in recent years. However, the intersection of these two trends has been neglected. The present volume fills this gap by focusing on the way globalization of agri-food systems affects the world’s poor and its impact on food and nutrition security in developing countries. Rather than offering a single policy prescription or simplistic messages about globalization being 'good' or 'bad', the book acknowledges the complexity of the subject by including a variety of policy and research perspectives. The contributors analyse in details the links between poverty and globalization. They examine the different interactions between the...
Tipo: Report Palavras-chave: Food supply; Developing countries; Rural poor Globalization; Food Security and Poverty.
Ano: 2008 URL: http://purl.umn.edu/46012
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Improving Nutrition as a Development Priority: Addressing Undernutrition in National Policy Processes in Sub-Saharan Africa AgEcon
Benson, Todd.
Undernutrition has, fortunately, risen on the policy agenda in Africa in recent years. In 2004, an international IFPRI 2020 conference held in Kampala on food and nutrition security in Africa drew attention to the issue, and high-level policymakers noted the problem and the need for action much more than they had before. Still, undernutrition remains a fundamental challenge to achieving improved human welfare and economic growth in Sub- Saharan Africa. To address that challenge, national governments must undertake appropriate policies and actions. Politically, however, a high prevalence of undernutrition is not seen as anomalous and indicative of the inability of governments to fulfill their duties to their citizens. This report examines the findings from...
Tipo: Report Palavras-chave: Nutrition policy; Africa Sub-Saharan; Food supply; Food Consumption/Nutrition/Food Safety; International Development.
Ano: 2008 URL: http://purl.umn.edu/37875
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Income and Nutritional Effects of the Commercialization of Agriculture in Southwestern Kenya AgEcon
Kennedy, Eileen T.; Cogill, Bruce.
The commercialization of Agriculture is the cornerstone on economic development in the most developing countries. Yet relatively little is known about the income and nutritional effects of increasing commercial Agriculture. The present study by Eileen Kennedy and Bruce Cogill is the first in a series of studies conducted by IFPRI in Africa, Asia, and Central America to assess the effects of the commercialization of Agriculture on production, consumption, and nutrition status. In 1983 IFPRI was invited by the government of Kenya to undertake a study of the production and consumption effects of a smallholder sugarcane contracting scheme in Southwestern Kenya. The resulting study is unusual because it uses a random sample of farmers at various stages of...
Tipo: Report Palavras-chave: Agriculture; Economic aspects; Kenya; South Nynaza District; Food supply; Sugarcane Industry; Corn Industry; Agricultural wages; Agricultural laborers; Nutrition; Cost and standard of living; Nutrition policy; Diseases; Agricultural and Food Policy; Farm Management.
Ano: 1987 URL: http://purl.umn.edu/42174
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Irrigation Technology and Commercialization of Rice in the Gambia: Effects on Income and Nutrition AgEcon
von Braun, Joachim; Puetz, Detlev; Webb, Patrick.
With its focus in irrigation technology and commercialization of rice in West Africa, this study addresses the question of how agricultural growth in Sub-Saharan Africa may improve food security. Over the last few decades in Africa, rice has ranked second after maize among cereal that have contributed to the overall growth of cereal output. In West Africa, rice imports have grown rapidly during the last two decades. Future decisions on irrigation investments and technology choices will be critical importance in view of numerous past failures and excessive costs of irrigation in Sub-Saharan Africa. This research by Joachim Von Braun, Detlev Puetz, and Patrick Webb is to be seen against the backdrop of policy priorities resulting from the earlier work of...
Tipo: Report Palavras-chave: Rice trade; Gambia; Irrigation; Economic aspects; Food supply; Income; Crop Production/Industries; Food Consumption/Nutrition/Food Safety.
Ano: 1989 URL: http://purl.umn.edu/42167
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Legyen mindenki jóllakott? AgEcon
Romany, Pal.
Magyarországon a világélelmezés helyzetéről tanácskozott huszonöt évvel ezelőtt a Római Klub. A már akkor jelentkező világélelmezési válság kérdéseire többféle megoldást vázoltak fel a témakörrel foglalkozó szakemberek, melyek mind bíztatónak ígérkeztek, melyekből – szinte kivétel nélkül – csaknem semmi nem valósult meg. Magyarország évtizedeken át nemcsak helytállt az élelmezési versenyfutásban, hanem olyan tapasztalatokat is szerzett, melyek a mostani „újabb keletű” világélelmezési válságban is hasznosíthatók. --------------------- The Club of Rome organised a meeting about world food supply in Hungary 25 years ago. The experts proposed several solutions to alleviate world food crisis which seemed to be promising, nevertheless they–almost without...
Tipo: Journal Article Palavras-chave: Élelmezés; FAO; Kilábalási lehetőségek; Magyarországi tapasztalatok; Food supply; FAO; Recovering opportunities; Hungarian experiences; Agricultural and Food Policy; International Development.
Ano: 2008 URL: http://purl.umn.edu/58598
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Modelling the spatial heterogeneity of ecological processes in an intertidal estuarine bay: dynamic interactions between bivalves and phytoplankton ArchiMer
Grangere, Karine; Lefebvre, Sebastien; Bacher, Cedric; Cugier, Philippe; Menesguen, Alain.
Spatial patterns in ecological communities result from a combination of physical and biological factors. In an estuarine intertidal bay, spatial differences have been found in the structure of phytoplanktonic communities and in the biological performance of cultivated oysters. It has been hypothesised that trophic heterogeneity exists, although the mechanisms controlling it remain undefined. Spatial and temporal interactions in the structure of phytoplanktonic biomass and in the biological performance of cultivated oysters were highlighted in this estuarine intertidal bay using a 2-dimensional hydrodynamic model coupled to a nutrient-phytoplankton-zooplankton bivalve food web model. The coupled models allowed a reproduction in space and time of variations...
Tipo: Text Palavras-chave: Spatial heterogeneity; Hydrodynamics; Ecosystem model; Food supply; Bivalves; Dynamic energy budget model; Physiological status; Baie des Veys.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00017/12854/9819.pdf
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Multi-decadal changes in two co-occurring ophiuroid populations ArchiMer
Blanchet, Aline; Dubois, Stanislas; Hily, Christian; Rochette, Sebastien; Le Goaster, Edouard; Guillou, Monique.
Mixed beds of Ophiocomina nigra and Ophiothrix fragilis (Echinodermata, Ophiuroidea) are usually predominated by O. fragilis and are reported to be stable over time. The Bay of Brest (Brittany, France) is a highly productive ecosystem where both species co-occur in the main central part. Using a geostatistical approach, we tested for changes in O. nigra and O. fragilis density and total biomass patterns between 1987 and 2011. Our results highlighted an increase in O. nigra population size and the induction of a spatial shift of the co-occurring O. fragilis. O. nigra increased similar to 5 times in density and covered almost all the study area, while its density-dependent biomass increased similar to 3 times (22 t km(-2), ash-free dry mass) between 1987 and...
Tipo: Text Palavras-chave: Echinoderm; Ophiocomina nigra; Ophiothrix fragilis; Food supply; Kriging method; Suspension-feeder.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00090/20136/17782.pdf
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