Results 1 to 10 of about 1,995,749 (291)
Testing Conditional Factor Models [PDF]
SSRN Electronic Journal, 2009 We develop a new methodology for estimating time-varying factor loadings and conditional alphas based on nonparametric techniques. We test whether long-run alphas, or averages of conditional alphas over the sample, are equal to zero and derive test statistics for the constancy of factor loadings. The tests can be performed for a single asset or jointly
Ang, A., Kristensen, D.
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Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2011 Growth rate of sterlet (Acipenser ruthenus) juveniles and adults was studied and compared with other sturgeon species under experimental and farm conditions in the Czech Republic.
Miroslav Prokeš +4 more
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Scientia Marina, 2017 Anchovy is a commercial species that supports large fisheries in the Mediterranean Sea. In addition, anchovy is an essential element of the pelagic food web, playing a considerable role in connecting the lower and upper trophic levels.
Ana Ventero +2 more
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Brazilian Archives of Biology and Technology, 2008 The population structure, condition and reproductive period of Astyanax paranae adult individuals inhabiting a small reservoir were investigated. The fishes were quarterly captured from the riverine and lacustrine zones of the Alagados Reservoir, Paraná,
Milza Celi Fedatto Abelha +1 more
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Conditional Risk Factors for Atherosclerosis [PDF]
Mayo Clinic Proceedings, 2005 Although most patients who experience a coronary heart disease (CHD) event have one or more of the conventional risk factors for atherosclerosis, so do many people who have not yet experienced such an event. Therefore, predictive models based on conventional risk factors have a lower than desired accuracy, providing a stimulus to search for new tools ...
Iftikhar J, Kullo +1 more
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Morphological observations, length-weight relationships, and condition factors of the Whipfin fish, Gerres filamentosus (Cuvier, 1829) in the Hurghada Red Sea, Egypt. [PDF]
Journal of Bioscience and Applied Research, 2016 During the period from January 2010 to December 2010, the biometric studies of 669 (both sexes- 12:39 centimeters) the whipfin, silver biddy, Gerres filamentosus (Cuvier,1829) have been described to clarify the identity of the fish population in the ...
Taher M. Abu El-Nasr
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Applied Sciences, 2022 The impacts of pollution and long-term effects of local clam populations are misunderstood in estuaries. The purpose of this study was to follow inorganic contamination in tissues, changes of physiological health indicators, such as condition factor (CF),
François Gagné +3 more
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Interpretational factors in conditional reasoning [PDF]
Memory & Cognition, 1994 Two experiments examined the role of necessity and sufficiency relationships in conditional reasoning. The results indicated that perceived necessity and sufficiency predicted variability in reasoning performance for four pragmatic relations (permission, obligation, causation, and definition), for both determinant and indeterminant syntactic forms, and
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Brycon hilarii produced in hapas: effects in allometric growth [PDF]
Brazilian Journal of BiologyBiometric evaluations are essential to determine the growth characteristics related to the weight and length of fish. This study aimed to determine the growth patterns of juvenile piraputangas (Brycon hilarii) produced in hapas within an excavated pond ...
F. C. Oliveira +5 more
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Biological aspects of Hypostomus affinis (Siluriformes: Loricariidae) in Brazilian coastal rivers
Acta Limnologica Brasiliensia, 2022 Aim Determine the length-weight relationship (LWR), the period of reproduction, and evaluate the variation of the condition factor (K) of Hypostomus affinis from two coastal drainages in southeastern Brazil, assessing the influence of the rainfall on ...
Tiago Magalhães da Silva Freitas +1 more
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