Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 100
Primeira ... 12345 ... Última
Imagem não selecionada

Imprime registro no formato completo
Social Networks in Ghana AgEcon
Udry, Christopher R.; Conley, Timothy G..
In this chapter we examine social networks among farmers in a developing country. We use detailed data on economic activities and social interactions between people living in four study villages in Ghana. It is clear that economic development in this region is being shaped by the networks of information, capital and influence that permeate these communities. This chapter explores the determinants of these important economic networks. We first describe the patterns of information, capital, labor and land transaction connections that are apparent in these villages. We then discuss the interconnections between the various economic networks. We relate the functional economic networks to more fundamental social relationships between people in a reduced form...
Tipo: Working or Discussion Paper Palavras-chave: Endogenous networks; Informal credit; Social learning; Institutional and Behavioral Economics; O12; D85.
Ano: 2004 URL: http://purl.umn.edu/28488
Imagem não selecionada

Imprime registro no formato completo
Labor Supply, Schooling and the Returns to Healthcare in Tanzania AgEcon
Adhvaryu, Achyuta; Nyshadham, Anant.
We estimate the effects of higher quality healthcare usage on health, labor supply and schooling outcomes for sick individuals in Tanzania. Using exogenous variation in the cost of formal sector healthcare to predict treatment choice, we show that using better quality care improves health outcomes and changes the allocation of time amongst productive activities. In particular, sick adults who receive better quality care reallocate time from non-farm to farm labor, leaving total labor hours unchanged. Among sick children, school attendance significantly increases as a result of receiving higher quality healthcare, but labor allocations are unaffected. We interpret these results as evidence that healthcare has heterogeneous effects on marginal productivity...
Tipo: Working or Discussion Paper Palavras-chave: Labor supply; Health shocks; Schooling; Tanzania; Health Economics and Policy; Labor and Human Capital; I10; J22; J43; O12.
Ano: 2011 URL: http://purl.umn.edu/107260
Imagem não selecionada

Imprime registro no formato completo
The Structural Estimation of Principal-Agent Models by Least Squares: Evidence from Land Tenancy in Madagascar AgEcon
Brown, Zachary S.; Bellemare, Marc F..
We develop a method to structurally estimate principal-agent models by ordinary least squares (OLS). We set up a general principal-agent model which explicitly incorporates the wealth levels of each party and the opportunity cost to the agent of entering the contract. This yields an optimal contract that is linearized by way of an Nth order Taylor approximation. This in turn imposes N(3N-1)/2 restrictions on the parameters and yields an empirical test of the canonical principal-agent model. In the application, we consider the case where N = 2 and apply our method to a sample of land tenancy contracts in rural Madagascar. Empirical tests lead to consistent failure to reject the hypotheses derived from our structural model, which lends support to our...
Tipo: Working or Discussion Paper Palavras-chave: Principal-Agent Models; Contract Theory; Structural Estimations; Risk and Uncertainty; C12; C13; D86; O12; Q12.
Ano: 2009 URL: http://purl.umn.edu/49368
Imagem não selecionada

Imprime registro no formato completo
EXOGENOUS PRODUCTION SHOCKS AND TECHNICAL EFFICIENCY AMONG TRADITIONAL IVORIEN RICE FARMERS AgEcon
Sherlund, Shane M.; Barrett, Christopher B..
This paper uses a unique panel data set and data envelopment analysis (DEA) to obtain estimates of technical efficiency for 492 traditional rice plots in Côte d'Ivoire. The objective of this paper is to explore the importance of explicitly controlling for exogenous shocks to production in technical efficiency estimation. We show how omission of such variables in highly stochastic production environments can lead to serious inferential errors, with potentially significant policy implications. Conventional DEA estimation of a production frontier, followed by second-stage Tobit estimation of the correlates of plot- level technical efficiency, suggest widespread and substantial inefficiency related to crop fragmentation and seed varieties. However, when...
Tipo: Conference Paper or Presentation Palavras-chave: Africa (Sub-Saharan); Ivory Coast; Production frontiers; Agricultural productivity; Rice.; Crop Production/Industries; Productivity Analysis; O12; Q12; D2.
Ano: 1998 URL: http://purl.umn.edu/20945
Imagem não selecionada

Imprime registro no formato completo
A Panel Data Study of the Determinants of Micronutrient Intake in China AgEcon
Liu, Yi; Shankar, Bhavani.
Rapid economic growth in China has resulted in substantially improved household incomes. Diets have also changed, with a movement away from traditional foods and towards animal products and processed foods. Yet micronutrient deficiencies, particularly for calcium and vitamin A, are still widespread in China. In this research we model the determinants of the intakes of these two micronutrients using household panel data, asking particularly whether continuing income increases are likely to cause the deficiencies to be overcome. Nonparametric kernel regressions and random effects panel regression models are employed. The results show a statistically significant but relatively small positive income effect on both nutrient intakes. The local availability of...
Tipo: Conference Paper or Presentation Palavras-chave: Food Consumption/Nutrition/Food Safety; I12; O12.
Ano: 2006 URL: http://purl.umn.edu/25585
Imagem não selecionada

Imprime registro no formato completo
Farmers' Subjective Valuation of Subsistence Crops: The Case of Traditional Maize in Mexico AgEcon
Arslan, Aslihan; Taylor, J. Edward.
Shadow prices guide farmers' resource allocations, but for subsistence farmers growing traditional crops, shadow prices may bear little relationship with market prices. We econometrically estimate shadow prices of maize using data from a nationally representative survey of rural households in Mexico. Shadow prices are significantly higher than the market price for traditional but not improved maize varieties. They are particularly high in the indigenous areas of southern and southeastern Mexico, indicating large de facto incentives to maintain traditional maize there.
Tipo: Working or Discussion Paper Palavras-chave: Shadow prices; Non-market values; Supply response; Traditional crops; Onfarm conservation; Mexico; Agricultural and Food Policy; Community/Rural/Urban Development; International Development; O12; O13; Q12; Q39.
Ano: 2008 URL: http://purl.umn.edu/44488
Imagem não selecionada

Imprime registro no formato completo
Spatial Networks, Labor Supply and Income Dynamics: Evidence from Indonesian Villages AgEcon
Yamauchi, Futoshi; Muto, Megumi; Chowdhury, Shyamal K.; Dewina, Reno; Sumaryanto, Sony.
This paper examines the impact of spatial connectivity development on household income growth and non-agriculture labor supply, combining household panel data and village census in Indonesia. Empirical results show that the impacts of the improvement of local road quality in the area (positively correlated with transportation speed) on income growth and the transition to non-agricultural labor markets depends on the distance to economic centers and household education. In particular, post-primary education significantly increases the benefit from the local spatial connectivity improvement in remote areas and labor transition to non-agricultural sectors. Education and local road quality are complementary, mutually increasing income growth and...
Tipo: Conference Paper or Presentation Palavras-chave: Income growth; Spatial Connectivity; Rural economy; Education; Indonesia; Community/Rural/Urban Development; Labor and Human Capital; O12; R40.
Ano: 2009 URL: http://purl.umn.edu/51571
Imagem não selecionada

Imprime registro no formato completo
Are Household Production Decisions Cooperative? Evidence on Pastoral Migration and Milk Sales from Northern Kenya AgEcon
Doss, Cheryl R.; McPeak, John G..
Market-based development efforts frequently create opportunities to generate income from goods previously produced and consumed within the household. Production within the household is often characterized by a gender and age division of labor. Market development efforts to improve well being may lead to unanticipated outcomes if household production decisions are non-cooperative. We develop and test models of household decision-making to investigate intra-household decision making in a nomadic pastoral setting from Kenya. Our results suggest that household decisions are contested, with husbands using migration decisions to resist wives’ ability to market milk.
Tipo: Working or Discussion Paper Palavras-chave: Intrahousehold decision-making; Household production; Kenya; Consumer/Household Economics; D13; O12.
Ano: 2005 URL: http://purl.umn.edu/28460
Imagem não selecionada

Imprime registro no formato completo
Dams AgEcon
Duflo, Esther; Pande, Rohini.
The construction of large dams is one of the most costly and controversial forms of public infrastructure investment in developing countries, but little is known about their impact. This paper studies the productivity and distributional effects of large dams in India. To account for endogenous placement of dams we use GIS data and the fact that river gradient affects a district's suitability for dams to provide instrumental variable estimates of their impact. We find that, in a district where a dam is built, agricultural production does not increase but poverty does. In contrast, districts located downstream from the dam benefit from increased irrigation and see agricultural production increase and poverty fall. Overall, our estimates suggest that large...
Tipo: Working or Discussion Paper Palavras-chave: Dams; Development planning; Program evaluation; India; Public Economics; O21; O12; H43; H23.
Ano: 2005 URL: http://purl.umn.edu/28373
Imagem não selecionada

Imprime registro no formato completo
Impacts of Land Rental Markets on Rural Poverty in Kenya AgEcon
Jin, Songqing; Jayne, Thomas S..
This study uses panel data from 1,142 Kenya smallholder households over four survey periods to examine the determinants of participation in land rental markets and to quantify the impact of renting land on households’ crop income and total income. We find that land rental markets in Kenya enhance productivity and are equitable. The results are consistent across different estimation methods and model specifications. Dynamic panel models were used to assess the impact of rental participation on households’ crop income and total income. After controlling for the endogeneity of rental market participation and the persistent effects of lagged income, we find that the decision to rent land increased tenant households’ net crop (net total) income by 25.1 (6.6)...
Tipo: Conference Paper or Presentation Palavras-chave: Land rental market; Kenya; Income; Poverty; Dynamic model; Agricultural and Food Policy; International Development; Land Economics/Use; O12; Q13; Q12; Q15.
Ano: 2011 URL: http://purl.umn.edu/103907
Imagem não selecionada

Imprime registro no formato completo
Monitoring Poverty without Consumption Data: an Application Using the Albania Panel Survey AgEcon
Azzarri, Carlo; Carletto, Calogero; Davis, Benjamin; Zezza, Alberto.
In developing countries poverty is generally measured with expenditure data. Such data are difficult and costly to obtain and it is generally recommended to collect them every 3-5 years. In between surveys, however, there is a clear need to provide policymakers with information for the monitoring of poverty trends. The paper reviews several such methods and compares the poverty estimates and trends resulting from their application to a panel dataset for Albania. The results are broadly consistent across methods and point to an overall improvement in welfare conditions over time, although the magnitude of the changes differs by locale, with urban areas showing a larger improvement than their rural counterparts. However, given the sensitivity of the...
Tipo: Working or Discussion Paper Palavras-chave: Poverty; Welfare; Asset index; Poverty measurement; Poverty monitoring.; Food Security and Poverty; O12; O18; O47; R11.
Ano: 2005 URL: http://purl.umn.edu/23809
Imagem não selecionada

Imprime registro no formato completo
The role of rural off-farm employment in agricultural development among farm households in low-income countries: Evidence from Zimbabwe AgEcon
Chikwama, Cornilius.
This study examines the widely held view that earnings from rural wage employment can help farm households overcome constraints on farm investments. It uses a panel dataset of 359 randomly selected farm households from three resettlement areas in Zimbabwe over the period 1996/97 to 1998/99. It finds no evidence to support the hypothesis that income from rural wage employment contributes towards increasing farm investment for the sampled households, and it attributes this to very low savings rates on rural wage employment income. Further, it finds that levels of farm investment increase with the amount of labor and land used in farm production in the previous year, and for households with male and/or older household heads. It also finds an inverse relation...
Tipo: Journal Article Palavras-chave: Rural off-farm wage employment; Farm investment; Agricultural development; Sub-Saharan Africa; Zimbabwe; International Development; Labor and Human Capital; O12; O18; J40; R20.
Ano: 2010 URL: http://purl.umn.edu/93874
Imagem não selecionada

Imprime registro no formato completo
Investing in Agriculture for Growth and Food Security in the ACP Countries AgEcon
Skoet, Jakob; Stamoulis, Kostas G.; Deuss, Annelies.
Countries in the ACP region will face significant challenges in the years to come as they try to step up economic growth, deal with increasingly integrated world markets and meet the Millennium Development Goals (MDGs), especially those focused on hunger and poverty. These efforts will take place in the face of declining external assistance and many competing demands on resources. The analysis in the paper shows that agriculture and rural economic activities are essential for growth, poverty reduction and food security especially for the poorer countries in the region. However trends in public resource mobilisation for agriculture and rural development (in terms of both domestic spending and Official Development Assistance) do not reflect that important...
Tipo: Working or Discussion Paper Palavras-chave: ACP countries; Hunger; Agriculture; Rural development; Food security; Resource mobilisation.; Food Security and Poverty; F35; H54; H55; Q18; R11; O12.
Ano: 2004 URL: http://purl.umn.edu/23802
Imagem não selecionada

Imprime registro no formato completo
Inter-household Allocations within Extended Family: Evidence from the Indonesia Family Life Survey AgEcon
Witoelar, Firman.
This paper uses data from two waves of the Indonesia Family Life Survey (IFLS2-1997 and IFLS3-2000) to investigate whether households that belong to the same extended families pool their income to smooth their consumption. We exploit the fact that the survey also tracks and interviews split-off households during the follow-up surveys, enabling us to construct a panel of extended families. The findings suggest that in contradiction to the null hypothesis of extended-family income pooling, household own income still matters to household consumption even after controlling for extended family resources. The result stands after correcting for potential measurement error and endogeneity of income. More importantly, the findings also suggest that although the...
Tipo: Working or Discussion Paper Palavras-chave: Consumption smoothing; Risk-sharing; Extended families; Consumer/Household Economics; D13; J12; O12.
Ano: 2005 URL: http://purl.umn.edu/28472
Imagem não selecionada

Imprime registro no formato completo
Receiving incorrect information is costly: Diffusion and accuracy of market information among farmers in northern Ghana AgEcon
Zanello, Giacomo; Shankar, Bhavani; Srinivasan, Chittur S..
The recent adoption of Information Communication Technologies (ICTs, namely mobile phones and radios) in rural areas of Sub- Saharan Africa has brought new evidence that an updated and reliable flow of information can have direct benefits for farmers' welfare. However, if correct market information can benefit the users, incorrect information can be costly. In this study we explore the diffusion (quantity) and the accuracy (quality) of price information among farmers in northern Ghana, with a focus on the role of ICTs.
Tipo: Presentation Palavras-chave: Market behaviour; Transaction costs; Information technologies; Consumer/Household Economics; International Development; Marketing; Research and Development/Tech Change/Emerging Technologies; D82; D83; D84; O12; O55.
Ano: 2012 URL: http://purl.umn.edu/123967
Imagem não selecionada

Imprime registro no formato completo
Social Connections and Group Banking AgEcon
Karlan, Dean S..
Lending to the poor is expensive due to high screening, monitoring, and enforcement costs. Group lending advocates believe lenders overcome this by harnessing social connections. Using data from FINCA-Peru, I exploit a quasi-random group formation process to find evidence of peers successfully monitoring and enforcing joint-liability loans. Individuals with stronger social connections to their fellow group members (i.e., either living closer or being of a similar culture) have higher repayment and higher savings. Furthermore, I observe direct evidence that relationships deteriorate after default, and that through successful monitoring, individuals know who to punish and who not to punish after default.
Tipo: Working or Discussion Paper Palavras-chave: Microfinance; Group lending; Informal savings; Social capital; Institutional and Behavioral Economics; O12; O16; O17; Z13.
Ano: 2005 URL: http://purl.umn.edu/28522
Imagem não selecionada

Imprime registro no formato completo
Institutions and Development: A View from Below AgEcon
Pande, Rohini; Udry, Christopher R..
In this paper we argue the case for greater exploitation of synergies between research on specific institutions based on micro-data and the big questions posed by the institutions and growth literature. To date, the macroeconomic literature on institutions and growth has largely relied on cross-country regression evidence. This has provided compelling evidence for a causal link between a cluster of ‘good’ institutions and more rapid long run growth. However, an inability to disentangle the effects of specific institutional channels on growth or to understand the impact of institutional change on growth will limit further progress using a cross-country empirical strategy. We suggest two research programs based on micro-data that have significant potential....
Tipo: Working or Discussion Paper Palavras-chave: Institutions; Growth; Cross-country regressions; Institutional and Behavioral Economics; International Development; O11; O12; O17; P51.
Ano: 2005 URL: http://purl.umn.edu/28468
Imagem não selecionada

Imprime registro no formato completo
Investment and Financial Constraints in European Agriculture: Evidence from France, Hungary and Slovenia AgEcon
Ferto, Imre; Bakucs, Lajos Zoltan; Bojnec, Stefan; Latruffe, Laure.
The article investigates the investment and financial constraints for French, Hungarian and Slovenian farms using FADN panel data with different econometric estimation approaches. Farm gross investment is positively associated with real sales growth and cash flow implying the absence of soft budget constraint. Gross farm investment is positively associated with investment subsidies. Specific results by country are found depending on farm indebtedness. Investment subsidies can mitigate some capital market imperfections in short-term, while on long-term what is crucial is farm sale ability to successfully compete in the output market gaining sufficient cash flow for farm competitive survival and investment.
Tipo: Conference Paper or Presentation Palavras-chave: Farm investment; Soft budget constraint; Investment subsidy; Panel data analysis; Agricultural Finance; D81; D92; O12; Q12; C23.
Ano: 2011 URL: http://purl.umn.edu/114357
Imagem não selecionada

Imprime registro no formato completo
What's Advertising Content Worth? Evidence from a Consumer Credit Marketing Field Experiment AgEcon
Bertrand, Marianne; Karlan, Dean S.; Mullainathan, Sendhil; Shafir, Eldar; Zinman, Jonathan.
Firms spend billions of dollars each year advertising consumer products in order to influence demand. Much of these outlays are on the creative design of advertising content. Creative content often uses nuances of presentation and framing that have large effects on consumer decision making in laboratory studies. But there is little field evidence on the effect of advertising content as it compares in magnitude to the effect of price. We analyze a direct mail field experiment in South Africa implemented by a consumer lender that randomized creative content and loan price simultaneously. We find that content has significant effects on demand. There is also some evidence that the magnitude of content sensitivity is large relative to price sensitivity....
Tipo: Working or Discussion Paper Palavras-chave: Economics of advertising; Economics & psychology; Behavioral; Economics; Cues; Microfinance; Institutional and Behavioral Economics; Marketing; D01; M31; M37; C93; D12; D14; D21; D81; D91; O12.
Ano: 2009 URL: http://purl.umn.edu/47038
Imagem não selecionada

Imprime registro no formato completo
Productive Benefits of Health: Evidence from Low-Income Countries AgEcon
Schultz, T. Paul.
Various household survey indicators of adult nutrition and health status are analyzed as determinants of individual wages. However, survey indicators of health status may be heterogeneous, or a combination of health human capital formed by investment behavior and variation due to genotype, random shocks, and measurement error, which are uncontrolled by behavior. Although there are no definitive methods for distinguishing between human capital and genetic variation in health outcomes, alternative mappings of health status, such as height, on community health services, parent socioeconomic characteristics, and ethnic categories may be suggestive. Instrumental variable estimates of health human capital and residual sources of variation in measured health...
Tipo: Working or Discussion Paper Palavras-chave: Health human capital; Wage productivity; Brazil; Ghana; Cote D’Ivoire; Health Economics and Policy; I12; J24; O12.
Ano: 2005 URL: http://purl.umn.edu/28532
Registros recuperados: 100
Primeira ... 12345 ... 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