Buscar
Mostrando ítems 1-10 de 154
Conditional alphas and realized betas
(2013-12-06)
This paper proposes a two-step procedure to back out the conditional alpha of a given stock using high-frequency data. We rst estimate the realized factor loadings of the stocks, and then retrieve their conditional alphas ...
The natural radioactivity in water by gross alpha and beta measurements
(Pergamon-Elsevier B.V. Ltd, 2009-01-01)
An alternative method for evaluating gross alpha and beta radioactivity in water was developed by performing alpha counting using a surface barrier detector and gamma-ray spectrometry using a Nal(Tl) scintillation detector. ...
The natural radioactivity in water by gross alpha and beta measurements
(Pergamon-Elsevier B.V. Ltd, 2009-01-01)
An alternative method for evaluating gross alpha and beta radioactivity in water was developed by performing alpha counting using a surface barrier detector and gamma-ray spectrometry using a Nal(Tl) scintillation detector. ...
Beta Diversity of Plant-Pollinator Networks and the Spatial Turnover of Pairwise Interactions
(Public Library Science, 2014-11-10)
Interactions between species form complex networks that vary across space and time. Even without spatial or temporal constraints mutualistic pairwise interactions may vary, or rewire, across space but this variability is ...
The natural radioactivity in water by gross alpha and beta measurements
(Pergamon-Elsevier B.V. Ltd, 2014)
Níveis de Beta-glucanos em dietas de leitões de 21 a 60 dias de idade
(Universidade Federal de Minas GeraisBrasilPrograma de Pós-Graduação em ZootecniaUFMG, 2008)
One experiment was realized with 1,500 animals distributed in experimental blocks at random with five treatments: control, 60, 120, 180 and 240 grams of beta-glucan per ton of feed. The analyzed variables were daily weight ...
Seiberg-Witten for Spin(n) with spinors
(Springer, 2015-08-07)
N = 2 supersymmetric Spin(n) gauge theory admits hypermultiplets in spinor representations of the gauge group, compatible with beta <= 0, for n <= 14. The theories with beta < 0 can be obtained as mass-deformations of the ...
Beta Diversity of Plant-Pollinator Networks and the Spatial Turnover of Pairwise Interactions
(Public Library Science, 2015)