Results 81 to 90 of about 530,362 (239)
Aprimoramento do Índice de Segurança Hídrica da ANA
Revista de Gestão de Água da América LatinaA segurança hídrica é ampla, ainda assim tem sido modelada como sinônimo de escassez hídrica. No Brasil, a ANA criou o Índice de Segurança Hídrica (ISH) que seguiu este mesmo viés.
Daniel Ben-Hur Silva de Oliveira +2 more
doaj
Comparing the Productive Efficiency of Cooperatives and Private Enterprises: The Portuguese Wine Industry as a Case Study [PDF]
This paper compares the efficiency of cooperatives and private enterprises in the Portuguese wine industry, employing data envelopment analysis (DEA). The use of DEA for the analysis of comparative efficiency within a sector is a key tool in evaluating ...
Barros, Carlos Pestana +1 more
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Ciclos econômicos na taxa de crescimento do ICMS
Economia Aplicada, 2009 O objetivo principal deste trabalho é investigar a existência e as principais características de ciclos econômicos na taxa de crescimento do ICMS. Para alcançar esse objetivo, modelos de mudança de regime de Markov e com efeito limiar (threshold) foram ...
Roberto Tatiwa Ferreira
doaj
Asymptotics and Consistent Bootstraps for DEA Estimators in Non-parametric Frontier Models [PDF]
Non-parametric data envelopment analysis (DEA) estimators based on linear programming methods have been widely applied in analyses of productive efficiency.
Alois Kneip +2 more
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GrassesOzonation of irrigation water is a promising technology that improves the efficiency of irrigation systems. However, it is necessary to investigate the potential adverse effects of the continuous application of this technology on pastures, particularly ...
Wesley Lopes Cançado +6 more
doaj +1 more source
Quantitative selection of hedge funds using data envelopment analysis [PDF]
Previous studies have documented that Data Envelopment Analysis(DEA) could be a good tool to evaluate fund performance,especially the performance of hedge funds as it can incorporatemultiple risk-return attributes characterizing hedge fund's nonnormal ...
Huyen Nguyen-Thi-Thanh
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Influência da densidade do solo infestado por nematoide no desenvolvimento inicial de cana-de-açúcar [PDF]
Revista Brasileira de Engenharia Agrícola e Ambiental, 2014 Em áreas cultivadas com cana-de-açúcar no Nordeste do Brasil, a compactação do solo e a presença de altas densidades populacionais de nematoides, principalmente Meloidogyne spp. restringem severamente a produtividade agrícola. O presente estudo teve como
Carmem C. M. de Sousa +4 more
doaj
Modeling Blank Data Entries in Data Envelopment Analysis [PDF]
We show how Data Envelopment Analysis (DEA) can handle missing data. When blank data entries are coded by appropriate dummy values, the DEA model automatically excludes the missing data from the analysis.
Timo Kuosmanen
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Growth Performance of Sabia Grass Irrigated by Drippers Installed in Subsurface
AgriEngineeringStudies to improve the use of subsurface drippers in pasture formation are needed. Therefore, the objective of this study was to evaluate the germination and emergence of Sabia grass as a function of drippers installed at different depths.
Mayara Oliveira Rocha +4 more
doaj +1 more source
DEA investment strategy in the Brazilian stock market [PDF]
This paper presents a multi-period investment strategy using Data Envelopment Analysis (DEA) in the Brazilian stock market. Results show that the returns based on the DEA strategy were superior to the returns of a Brazilian stock index in most of the 22 ...
Ana Lopes +3 more
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