01336nam a2200181 a 450000100080000000500110000800800410001910000220006024501510008226000880023352006990032165000260102065300240104665300150107065300270108565300250111270000170113719012432011-09-23       2011    bl uuuu     u00u1 u    #d1 aSOUZA, G. da S. e  aA nonpaprametric approach to evaluate the impact of contextual variables on the agricultural research efficiency in Brazil.h[electronic resource]  aIn: SIMPÓSIO BRASILEIRO DE PESQUISA OPERACIONAL, 43, 2011, Ubatuba. Anais...c2011  aIn this paper we measure technical efficiency for each of Embrapa (Brazilian Agricultural Research Corporation) research centers. We model DEA efficiency as a function of contextual variables: revenue generation capacity, partnership intensity, improvement of administrative processes, and impact of technologies generated by the research centers. Production is modeled with random and inefficient errors, in a manner similar to stochastic frontiers. The assessment of significance for the set of contextual variables is carried out by means of linear programming and goodness of fit tests and has a nonparametric basis. We conclude that there is joint significance of all contextual variables.  aagricultural research  aContextual variable  aEfficiency  aPesquisa Agropecuária  aVariável contextual1 aGOMES, E. G.