http://hdl.handle.net/1834/1359 Thu, 23 May 2013 20:58:09 GMT 2013-05-23T20:58:09Z http://hdl.handle.net/1834/2560 Title: Introducción al análisis Bayesiano Authors: Hernandez, D.R. Abstract: An introduction to the Bayesian Analysis is presented and conceptual aspects highlighted. Initially, the probability concept is analyzed from its objective perspective such as frequency, and from its subjective perspective such as degree of belief. It is discussed how, within the context of Bayesian statistics, probability as degree of belief allows to give sense to the probability of a hypothesis and, therefore, enables to resolve problems of scientific interest that could not be otherwise addressed. The likelihood concept is discussed and the Bayes formula, which integrates a priori information and knowledge with information provided by current data demonstrated. Basic concepts of the Decision Theory within the Bayesian perspective are introduced. The SIR (Sampling Importance Resampling) algorithm is presented as a tool to carry out a Bayesian Analysis with numerical techniques. Finally, an application example in fisheries considering Shaefer biomass dynamics model is shown.; Se presenta una introducción al Análisis Bayesiano donde se destacan, esencialmente, los aspectos conceptuales. Se analiza inicialmente el concepto de probabilidad desde su perspectiva objetiva tal como frecuencia, y desde su perspectiva subjetiva tal como grado de creencia. Se discute cómo, en el contexto de la estadística Bayesiana, la probabilidad como grado de creencia permite darle sentido a la probabilidad de una hipótesis y por lo tanto habilita a resolver problemas de interés científico que de otra forma serían inabordables. Se discute el concepto de verosimilitud y se demuestra la fórmula de Bayes que integra información y conocimiento a priori con la información proporcionada por los datos actuales. Se introducen conceptos básicos de la Teoría de la Decisión en el contexto Bayesiano. Se presenta el algoritmo SIR (Sampling Importance Resampling) como herramienta para realizar un Análisis Bayesiano con técnicas numéricas. Por último, se muestra un ejemplo de aplicación en pesquerías considerando el modelo de dinámica de biomasa de Schaefer. Mon, 01 Jan 2007 00:00:00 GMT http://hdl.handle.net/1834/2560 2007-01-01T00:00:00Z http://hdl.handle.net/1834/2478 Title: Guía técnica para la identificación de invertebrados epibentónicos asociados a los bancos de vieira patagónica (Zygochlamys patagonica)en el Mar Argentino Authors: Bremec, C.; Marecos, A.; Schejter, L.; Lasta, M.L. Abstract: Technical guide to identify epibenthic invertebrates associated to Patagonian scallop (Zygochlamys patagonica)beds in the Argentine Sea, SW Atlantic. A catalogue of the invertebrate species that conform the by-catch of the Patagonian scallop fishery is presented and a descriptive technical note with basic information on the organisms considered is included. Wed, 01 Jan 2003 00:00:00 GMT http://hdl.handle.net/1834/2478 2003-01-01T00:00:00Z http://hdl.handle.net/1834/2504 Title: Plancton sin formol Authors: Ramirez, F.C. Tue, 01 Jan 2002 00:00:00 GMT http://hdl.handle.net/1834/2504 2002-01-01T00:00:00Z http://hdl.handle.net/1834/2587 Title: Flota pesquera Argentina. Evolucion 1960-1998 con una actualizacion al 2000. Authors: Bertolotti, M.I.; Verazay, G.A.; Pagani, A.N.; Errazti, E.; Buono, J.J. Abstract: The analysis of the Argentine fishing fleet (SW Atlantic) evolution as of 1960 allows to explain the major causes of expansion, the crisis in the fisheries and the structural changes of the fleet during the 90's. Different fleet classification criteria focused on fishing capacity, fish landing composition, yields and productivity indices are described. The expansion cycles were associated to the incorporation of fishing vessels, while the 1960-1989 crisis originated in domestic and international economic crisis and changes in the strategy pattern of the fishing countries. The latter was related to overfishing of traditional coastal and demersal fisheries and to the full exploitation of resources such as squid, blue whiting and toothfish incorporated to the fishery as of 1989. Mon, 01 Jan 2001 00:00:00 GMT http://hdl.handle.net/1834/2587 2001-01-01T00:00:00Z