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| Registros recuperados: 17 | |
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| Abdulai, Awudu; Diao, Xinshen; Johnson, Michael. |
| This study focuses on public investments and policy reforms for leveraging growth spillovers at the African regional level. A conceptual framework that is built on the endogenous growth theory and the new economic geography is presented first to gain a better understanding of the underlying theory and empirical evidence on regional integration and growth spillovers. In order to demonstrate the potential benefits from greater cross-border technology spillovers in Africa, as well as from trade liberalization and investment in infrastructure, results from ex-ante simulations using partial and general equilibrium models are then presented and discussed. Results indicate that sizeable regional spillover benefits can be obtained by permitting greater crossborder... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Computable General Equilibrium Models C68; Agricultural growth; Agricultural sector; International Development. |
| Ano: 2005 |
URL: http://purl.umn.edu/58371 |
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| Abdulai, Awudu; Delgado, Christopher L.. |
| This paper investigates empirically the factors that influence real agricultural wage rates in Ghana, based on 1957 to 1991 data. The Johansen cointegration framework is used to examine long-run relationships among agricultural and urban wage rates, the domestic terms of trade between agriculture and nonagriculture, urban unemployment, capital stock in agriculture and the size of the rural population. An error correction model is then used to investigate short-run dynamic relationships among the variables. The results show that: (1) there is only one stable equilibrium relationship among agricultural wage rates and their determinants in the long-run; (2) a 1 percent change in the domestic terms of trade between agriculture and non-agriculture leads to a... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Income; Ghana; Agriculture; Economic Aspects; Labor and Human Capital. |
| Ano: 1999 |
URL: http://purl.umn.edu/97382 |
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| Abdulai, Awudu; Huffman, Wallace E.. |
| This paper employs a stochastic frontier model to examine profit inefficiency of rice farmers in the Northern Region of Ghana using farm-level survey data. The efficiency index, based on a half-normal distribution of the stochastic error term is related to farm and household characteristics. The empirical results show that farmers' human capital represented by the level of schooling contributes positively to production efficiency, suggesting that investment in farmers' education improves their allocative performance. Access to credit and greater specialization in rice production, are found to be positively related to production efficiency. A farmer's participation in nonfarm employment and being older, however, reduce production efficiency. Farmers... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Africa; Ghana; Production efficiency; Profit frontier; Rice; Crop Production/Industries. |
| Ano: 1998 |
URL: http://purl.umn.edu/18271 |
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| Abdulai, Awudu; Aubert, Dominique. |
| This study employs both nonparametric and parametric methods to examine the influence of household expenditure and other demographic variables on household consumption of calories in Tanzania, using recent survey data. Under each estimation strategy we employ, we find significant and positive relationship between household expenditure and calorie consumption. Even with an estimation strategy that ensures consistent estimates in the presence of measurement error, the calorie-expenditure elasticity is 0.46, a finding that is consistent with the traditional view that, increases in household income will improve calorie intake and help alleviate inadequate nutrition. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Food Security and Poverty. |
| Ano: 2002 |
URL: http://purl.umn.edu/24863 |
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| Schmitz, Silke; Abdulai, Awudu. |
| This study examined the incidence and determinants of quantity price discounts and quantity price surcharges in the German food sector through a bivariate probit, using recent consumer scanner survey data. Selectivity bias was corrected for in estimating the degree of quantity price surcharge and quantity price discount, using Heckman's procedure. The findings reveal that almost 10% of the investigated products attract higher unit prices for larger package sizes, although the extent of price surcharges varied among product categories. The number of package sizes, the average package size, packaging form, storage form, as well as the price image of a product, were found to be significantly related to the probability and degree of quantity price surcharges... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Consumer/Household Economics. |
| Ano: 2006 |
URL: http://purl.umn.edu/21419 |
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| Abdulai, Awudu; Barrett, Christopher B.; Hazell, Peter B.R.. |
| Food aid remains significant for food availability in many low-income countries in sub-Saharan Africa, helping to reduce the gap between food consumption needs and supply from domestic production and inventories and commercial imports. Food aid remains a contentious subject, however, and there have been many recent pleas for more effective use of the resource. This study explores how food aid might be used for domestic food market development to facilitate poverty alleviation and economic growth. There are obvious risks to using food aid for market development, just as there have been in using food aid to try to stimulate agricultural development. Because food aid necessarily expands local food supply, it needs to be well targeted if adverse producer price... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Food Security and Poverty; International Relations/Trade. |
| Ano: 2004 |
URL: http://purl.umn.edu/16170 |
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| Abdulai, Awudu; Johnson, Michael; Diao, Xinshen. |
| This study focuses on public investments and policy reforms for leveraging growth spillovers at the Africa regional level. It reviews first the theory and evidence of knowledge and growth spillovers generally and second the evidence in the African context. Given the limited and scattered evidence of actual past spillovers, it reviews recent ex ante simulations using partial and general equilibrium models to stress the potential for spillovers from greater cooperation in agricultural research, and from trade liberalization, policy harmonization and investments in infrastructure. The results show that permitting greater crossborder transfers and adopting improved technologies could have large spillover multiplier effects on overall economic welfare in the... |
| Tipo: Journal Article |
Palavras-chave: Sub-Saharan Africa; Regional cooperation; Spillovers; Agricultural development; International Development. |
| Ano: 2006 |
URL: http://purl.umn.edu/57021 |
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| Mofya-Mukuka, Rhoda; Abdulai, Awudu. |
| 1) Export diversification has long been at the centre of Zambia’s economic diversification policies. This article focuses on the coffee sector as a potentially important source of export diversification and examines its supply response to changes in various incentives. 2) Zambian coffee exhibits asymmetric short-run supply adjustments to long-run equilibrium such that production rises significantly after prices rise while changing little after prices fall. 3) The fact that coffee in Zambia is mainly grown for export, the changes in real exchange have the most significant effect on supply in that a depreciation in the Zambian Kwacha leads to an increase in coffee supply. |
| Tipo: Technical Report |
Palavras-chave: Zambia; Coffee; Export; Agricultural and Food Policy; Food Security and Poverty. |
| Ano: 2012 |
URL: http://purl.umn.edu/123556 |
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| Abdulai, Awudu; Glauben, Thomas; Herzfeld, Thomas; Zhou, Shudong. |
| Whereas water is an important input in rice production, China faces severe problems with increasing demand for water and limited water resources. In conventional paddy production, one of the most important irrigated crops, a significant amount of irrigation water is lost due to percolation and evaporation. Therefore, it exist a vivid research in water saving rice technologies. This paper analyzes the adoption of one of these water-saving rice production technologies, the so-called Ground Cover Rice Production System (GCRPS), in the Hubei province. Based on farm survey data several factors which affect the adoption decision could be identified. The adoption decision is treated as a binary choice problem and therefore a probit model is used for the... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: China; Technology adoption; Water; GCRPS; Probit; Crop Production/Industries; O30; Q16. |
| Ano: 2005 |
URL: http://purl.umn.edu/24708 |
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| Registros recuperados: 17 | |
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