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	Provedor de dados AgEcon (7) Autor Amikuzuno, Joseph (7) Ihle, Rico (4) von Cramon-Taubadel, Stephan (2) Zorya, Sergiy (1) Palavra-chave Ghana (5) Q13 (5) Q11 (4) Tomato (4) C32 (3) Border (2) Burkina-Faso (2) Demand and Price Analysis (2) F14 (2) International Relations/Trade (2) Price Transmission (2) Q17 (2) Q18 (2) Research Methods/ Statistical Methods (2) Agribusiness (1) Agricultural and Food Policy (1) Asymmetric price transmission (1) Cointegration (1) Crop Production/Industries (1) F15 (1) Mais... Tipo do documento Conference Paper or Presentation (6) Journal Article (1) Ano 2011 (3) 2010 (2) 2009 (2) País United States (7) Idioma Inglês (6) Alemão (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 7 Primeira ... 1 ... Última Grenzeffekte in der Marktintegration bei Mais in Ostafrika: Einsichten aus einem semi-parametrischen Regressionsmodell AgEcon Ihle, Rico; Amikuzuno, Joseph; von Cramon-Taubadel, Stephan; Zorya, Sergiy. Diese Arbeit analysiert Faktoren, die Einfluß auf das Ausmaß der inländischen und grenz-übergreifenden Integration der Maismärkte Kenias, Tansanias und Ugandas ausüben. Die Stärke der Reaktion der Preise auf Abweichungen von ihren Langzeitgleichgewichtswerten als Maß der Marktintegration und die Determinanten dieser Reaktion werden für 85 Marktpaare von Januar 2000 bis Oktober 2008 untersucht. Zu diesem Zweck wird ein semi-parametrisches partiell-lineares Regressionsmodell genutzt, das imstande ist, den Einfluß der Marktentfernung, der sich als nichtlinear herausstellt, adäquat zu modellieren. Die Ergebnisse der Untersuchung sind kohärent mit der ökonomischen Theorie und von politischem Interesse. Ein Grenzeffekt wird identifiziert, der in dem Sinne... Tipo: Conference Paper or Presentation Palavras-chave: Grenzeffekt; Mais; Ostafrika; Räumliche Marktintegration; Semi-parametrische Regression; Research Methods/ Statistical Methods. Ano: 2009 URL: http://purl.umn.edu/53272 Adapting Johansen’s Estimation Method for Flexible Regime-dependent Cointegration Modelling AgEcon Ihle, Rico; Amikuzuno, Joseph; von Cramon-Taubadel, Stephan. Tipo: Conference Paper or Presentation Palavras-chave: Research Methods/ Statistical Methods. Ano: 2011 URL: http://purl.umn.edu/114461 Border Effects on Spatial Price Transmission between Fresh Tomato Markets in Ghana and Burkina-Faso: Any Case for Promoting Trans-Border Trade in West Africa? AgEcon Amikuzuno, Joseph. Cross-border trade in food commodities within sub-regional economic blocks in Sub-Sahara Africa (SSA) is believed to be faster, cheaper, more convenient and welfare-enhancing than overseas trade between SSA countries and the USA, EU and the BRIC countries. The difficulty of commodity arbitrage across international borders SSA is however a fundamental constraint to price transmission, market integration and the realisation of the welfare-enhancing role of cross-border trade in Africa. This study examines the impact of border and distance on price transmission between tomato markets in Ghana and Burkina-Faso. The analysis applies a regime-switching vector error correction model to estimate semi-weekly, wholesale prices of tomato in four tomato markets in... Tipo: Conference Paper or Presentation Palavras-chave: Price Transmission; Border; Tomato; Ghana; Burkina-Faso; Agribusiness; C32; Q11; Q13; Q17; Q18. Ano: 2011 URL: http://purl.umn.edu/115519 Seasonal Asymmetric Price Transmission in Ghanaian Tomato Markets: Adapting Johansen’s Estimation Method AgEcon Amikuzuno, Joseph; Ihle, Rico. We assess market integration and price transmission of perishable agricultural produce in Sub-Saharan Africa by studying Ghanaian tomato markets which are characterized by pronounced seasonality in production and trade flows. We analyse the tomato markets of Ghana by simultaneously regarding its five most important markets, Navrongo, Techiman, Kumasi, Tamale and Accra, in a multivariate asymmetric price transmission framework. The estimation of the model is based on a unique dataset and on a modified version of the Johansen estimation procedure which is suitable for estimating such multivariate models. We estimate the price transmission parameters for four regimes which are a combination of the seasonal patterns in trade flows and asymmetries in the... Tipo: Conference Paper or Presentation Palavras-chave: Asymmetric price transmission; Cointegration; Ghana; Regime-dependent model; Seasonality; Tomato; Vector error-correction model; Crop Production/Industries; Demand and Price Analysis; C32; Q11; Q13; F14; F15. Ano: 2010 URL: http://purl.umn.edu/96814 Spatial Price Transmission Analysis in Agricultural Markets: Does the Data Frequency Improve our Estimation? AgEcon Amikuzuno, Joseph. Unavailability of high frequency, weekly or daily data compels most studies of price transmission in developing countries to use low frequency, monthly data for their analyses. Analyzing price dynamics with monthly data may however yield imprecise price adjustment parameters and lead to wrong inferences on price dynamics. This is because agricultural markets in developing countries operate daily or weekly. In this paper, we investigate the relevance of data frequency in price transmission analysis. We use a standard- and a threshold vector error model to estimate and compare price adjustment parameters for a high frequency, semi-weekly, data and a low frequency, monthly data. The results reveal that adjustment parameters estimated from the low frequency... Tipo: Journal Article Palavras-chave: Ghana; Tomato; Market integration; Physical trade; Demand and Price Analysis; Q13. Ano: 2010 URL: http://purl.umn.edu/96167 The Integration of Tomato Markets in Ghana with and without Direct Trade Flows AgEcon Ihle, Rico; Amikuzuno, Joseph. Spatial market equilibrium theory views trade flow as the driving force behind market integration. We assess spatial price transmission between domestic tomato markets in Ghana to ascertain whether spatial price transmission veritably depends on direct trade between markets, or whether other forces drive market integration. We analyze a unique data set on tomato trade consisting of semi-weekly price and trade flow data for the five most important Ghanaian markets for fresh tomato, which represents one of the most important commercially produced and consumed vegetables in the country. A regime-dependent vector error correction model is proposed to investigate this question, and the results are compared with those of a linear vector error correction model.... Tipo: Conference Paper or Presentation Palavras-chave: Keywords— spatial market integration; Regime-dependent vector error correction model; Information flow; Ghana; Tomato.; Agricultural and Food Policy; Food Security and Poverty; International Relations/Trade; Marketing; JEL: C32; Q11; Q13; F14. Ano: 2009 URL: http://purl.umn.edu/51402 Border Effects on Spatial Price Transmission between Fresh Tomato Markets in Ghana and Burkina-Faso: Any Case for Promoting Trans-border Trade in West Africa? AgEcon Amikuzuno, Joseph. Cross-border trade in food commodities within sub-regional economic blocks in Sub-Sahara Africa (SSA) is believed to be faster, cheaper, more convenient and welfare-enhancing than trade between SSA countries and the USA or EU. The difficulty of commodity arbitrage across borders in SSA is however a fundamental impediment to price transmission, market integration and the realisation of the welfare-enhancing role of cross-border trade. This study examines the impact of border and distance on price transmission between tomato in Ghana and Burkina-Faso. The analysis applies a linear and a regime-switching vector error correction model to estimate wholesale prices of tomato in four tomato markets in Ghana and a producer market in Burkina-Faso. The estimated... Tipo: Conference Paper or Presentation Palavras-chave: Price Transmission; Border; Tomato; Ghana; Burkina-Faso; International Relations/Trade; C32; Q11; Q13; Q17; Q18. Ano: 2011 URL: http://purl.umn.edu/108943 Registros recuperados: 7 Primeira ... 1 ... Última

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