Results 11 to 20 of about 51,126 (300)
Martini Indices, Fisher Indices, and Consistency-in-Aggregation [PDF]
SSRN Electronic Journal, 2023 In this article we consider the price and quantity indices introduced in the nineties by the Italian statistician Marco Martini (1944–2002). It turns out that Fisher indices can be considered as members of the infinite set of Martini indices. In particular attention is paid to the question to what extent these indices exhibit Consistency-in-Aggregation.
Balk, Bert M.
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Consistent Aggregation with Superlative and Other Price Indices [PDF]
Journal of the Royal Statistical Society Series A: Statistics in Society, 2020 AbstractVarious fields of economic analysis (e.g. growth and productivity) and economic policy (e.g. monetary and social policy) rely on accurate measures of price change. Unfortunately, the price index formulae that most price statisticians consider as particularly accurate—the superlative indices of Fisher, Törnqvist, and Walsh—are believed to ...
von Auer, Ludwig, Wengenroth, Jochen
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A review of water quality index models and their use for assessing surface water quality
Ecological Indicators, 2021 The water quality index (WQI) model is a popular tool for evaluating surface water quality. It uses aggregation techniques that allow conversion of extensive water quality data into a single value or index.
Md. Galal Uddin +2 more
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Ecological Indicators, 2023 Unprecedented levels of change in ocean ecosystems bring an ever-increasing need for re-analyses of existing data to explore pressing conservation questions. Substantial declines in white shark (Carcharodon carcharias) presence at two primary aggregation
Heather D. Bowlby +5 more
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Revista Brasileira de Ciência do Solo, 2007 A distribuição de classes de tamanho, a quantidade e a estabilidade dos agregados constituem importantes critérios para avaliação da estrutura, a qual desempenha papel relevante nas relações entre o solo e as plantas.
Amarildo Luiz Passarin +3 more
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Revista Brasileira de Engenharia Agrícola e Ambiental, 2012 Realizou-se este estudo com o objetivo de se avaliar o efeito da aplicação da vinhaça na estabilidade dos agregados e nos índices de agregação do solo e nas correlações das propriedades físicas do solo em áreas cultivadas com cana-de-açúcar no litoral ...
Thais F. da S. Vicente +5 more
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Three methods to measure parasite aggregation using examples from Australian fish parasites
Methods in Ecology and Evolution, 2021 The distribution of parasites in host populations is integral to simulations of parasite populations. We compared three methods to measure parasite aggregation, namely the Hoover, coefficient of variation and I10 indices, using field data from a range of
Robert J. G. Lester +1 more
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New indices to capture the evolution characteristics of urban expansion structure and form
Ecological Indicators, 2021 A quantitative description is the basis for correctly understanding the urban expansion process. Previous approaches were dedicated to identifying expansion types based on the boundary sharing rate, thereby depicting the evolution of urban expansion ...
Jiafeng Liu +8 more
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Micromachines, 2019 Aggregation of red blood cells (RBCs) varies substantially depending on changes of several factors such as hematocrit, membrane deformability, and plasma proteins. Among these factors, hematocrit has a strong influence on the aggregation of RBCs.
Yang Jun Kang
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Primerjava izbranih krajinsko-ekoloških kazalcev za gozdove v dveh različnih krajinskih tipih
Acta Silvae et Ligni, 2015 By analysing changes in landscape structure we can trace the influence they have on the evaluation of the diversity function of a forest. In the presented research, it was assessed which indices for computing areas, cores and aggregation tendencies that ...
Janez Pirnat
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