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	Provedor de dados AgEcon (4) Autor Caceres-Hernandez, Jose Juan (4) Martin-Rodriguez, Gloria (3) Gonzalez-Gomez, Jose Ignacio (2) Ramos-Henriquez, Jose Manuel (2) Morini-Marrero, Sandra (1) Nuez-Yanez, Juan Sebastian (1) Mais... Palavra-chave Q17 (4) Agricultural and Food Policy (2) C22 (2) Q12 (2) Canarias (1) Costes (1) Demand and Price Analysis (1) Exportación (1) Farm Management (1) Heterogeneous seasonal patterns (1) Labor and Human Capital (1) Precios (1) Research Methods/ Statistical Methods (1) Splines (1) Tomate (1) Weekly data (1) Mais... Tipo do documento Conference Paper or Presentation (2) Journal Article (2) Ano 2010 (1) 2009 (2) 2006 (1) País United States (4) Idioma Espanhol (2) Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Impacto de la reforma del REASS en la agricultura canaria AgEcon Caceres-Hernandez, Jose Juan; Gonzalez-Gomez, Jose Ignacio; Nuez-Yanez, Juan Sebastian; Ramos-Henriquez, Jose Manuel. This paper deals with the potential effects on the profitability of Canary Islands’ farms due to the Special National Insurance System for Agricultural Workers Reform which was put in place in 2009 by the Spanish Government Ministry of Labour and Immigration. The effect on the employers’ National Insurance contributions per working day is analysed. Based on this analysis, the impact on costs and benefits in several farms which cultivate bananas, tomatoes or flowers is evaluated. According to the results, it is concluded that these farms cannot afford the costs’ increase derived from the reform if profitability per product unit or per surface should be maintained. On the other hand, the effect of changes in the contribution basis is softened to a great... Tipo: Journal Article Palavras-chave: Agricultural and Food Policy; Labor and Human Capital; Q12; Q17. Ano: 2010 URL: http://purl.umn.edu/99103 The Proportion of the Seasonal Period as a Season Index in Weekly Agricultural Data AgEcon Martin-Rodriguez, Gloria; Caceres-Hernandez, Jose Juan. In this paper a seasonal model is proposed to deal with weekly agricultural seasonal patterns in which neither the length of the seasonal period nor the magnitude of the seasonal effects remain the same over time. To model this heterogeneous seasonal behaviour, the seasonal effect at a season is defined as a function of the proportion of the length of the seasonal period elapsed up to this season, and the seasonal pattern is modelled by means of evolving splines. The methodology is illustrated for weekly Canary tomato prices. Tipo: Conference Paper or Presentation Palavras-chave: Weekly data; Heterogeneous seasonal patterns; Splines; Demand and Price Analysis; Research Methods/ Statistical Methods; C22; Q17. Ano: 2009 URL: http://purl.umn.edu/49956 Elección del calendario óptimo de exportación del tomate canario AgEcon Caceres-Hernandez, Jose Juan; Ramos-Henriquez, Jose Manuel; Gonzalez-Gomez, Jose Ignacio; Martin-Rodriguez, Gloria; Morini-Marrero, Sandra. Se formula un procedimiento para determinar el momento óptimo de inicio y final de la campaña exportadora de una explotación dedicada al cultivo de tomate en Canarias. Las horas semanales de trabajo en tareas de cultivo constituyen el elemento fundamental para evaluar los costes fijos, para el conjunto de la campaña, y variables, según la semana del periodo de exportación; mientras que los costes semanales de empaquetado y comercialización están más directamente asociados al volumen producido. Los volúmenes semanales exportados a los mercados europeos, así como las cotizaciones semanales obtenidas por el fruto, permiten determinar el periodo óptimo de exportación. Tipo: Journal Article Palavras-chave: Canarias; Costes; Exportación; Precios; Tomate; Agricultural and Food Policy; Q12; Q17. Ano: 2009 URL: http://purl.umn.edu/57289 Heterogeneous Seasonal Patterns in Agricultural Data and Evolving Splines AgEcon Caceres-Hernandez, Jose Juan; Martin-Rodriguez, Gloria. In this paper an appropriate model of the seasonal pattern in high frequency agricultural data is proposed that takes the specific nature of such a pattern into account. The methodological proposal is based on evolving splines that are shown to be a tool capable of modelling seasonal variations in which either the period or the magnitude of the seasonal fluctuations do not remain the same over time. The seasonal pattern in each year or agricultural campaign is modelled in such a way that the seasonal effect at each season is a function of the seasonal effects corresponding to some fixed seasons that act as reference points. The spline function is enforced to satisfy several conditions that provide some regularity in the adjusted seasonal fluctuation; on... Tipo: Conference Paper or Presentation Palavras-chave: Farm Management; C22; Q17. Ano: 2006 URL: http://purl.umn.edu/25261 Registros recuperados: 4 Primeira ... 1 ... Última

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