Results 21 to 30 of about 779,832 (257)

Genetic heterogeneity of residual variance - estimation of variance components using double hierarchical generalized linear models

Genetics Selection Evolution, 2010
Background The sensitivity to microenvironmental changes varies among animals and may be under genetic control. It is essential to take this element into account when aiming at breeding robust farm animals.
Fikse Freddy, Felleki Majbritt, Rönnegård Lars, Mulder Herman A, Strandberg Erling   +4 more
doaj   +1 more source

The Variance Composition of Firm Growth Rates [PDF]

BAR: Brazilian Administration Review, 2009
Firms exhibit a wide variability in growth rates. This can be seen as another manifestation of the fact that firms are different from one another in several respects.
Luiz Artur Ledur Brito, Flávio Carvalho de Vasconcelos   +1 more
doaj  

Kriging with Unknown Variance Components for Regional Ionospheric Reconstruction

Sensors, 2017
Ionospheric delay effect is a critical issue that limits the accuracy of precise Global Navigation Satellite System (GNSS) positioning and navigation for single-frequency users, especially in mid- and low-latitude regions where variations in the ...
Ling Huang, Hongping Zhang, Peiliang Xu, Jianghui Geng, Cheng Wang, Jingnan Liu   +5 more
doaj   +1 more source

Iteratively Reweighted Least Squares Fiducial Interval for Variance in Unbalanced Variance Components Model

Mathematics
The objective of this work is to propose the iteratively reweighted least squares concept to form a fiducial generalized pivotal quantity of the between-group variance component for the unbalanced variance components model.
Arisa Jiratampradab, Jiraphan Suntornchost, Thidaporn Supapakorn   +2 more
doaj   +1 more source

Solid Pseudopapillary Neoplasm of the Pancreas in Children and Adolescents: Expert Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low‐grade malignant exocrine pancreatic tumor, mostly discovered during the second decade of life in females, with a very good prognosis, provided microscopically complete surgical excision is achieved.
Sabine Irtan, Michael Abele, Calogero Virgone, Michaela Kuhlen, Ricardo Lopez‐Almarez, Tal Ben‐Ami, Ewa Bien, Maja Cesen, Malgorzata A. Krawczyk, Andrea Ferrari, Gianni Bisogno, Yves Reguerre, Dominik T. Schneider, Louise Galmiche, Jorg Fuchs, Sarah Braungart, Bilgehan Yalcin, Ines B. Brecht, Daniel Orbach   +18 more
wiley   +1 more source

Genetic Parameters and Trait Associations in Wheat Under Drought and Low Nitrogen Conditions

Nitrogen
Drought and low nitrogen stress are the leading cause of low crop production and productivity worldwide. Developing drought-tolerant wheat germplasm resilient to low nitrogen conditions is essential through genetic enhancement and selection for novel ...
Sbongeleni Warren Duma, Hussein Shimelis, Seltene Abady Tesfamariam, Toi John Tsilo   +3 more
doaj   +1 more source

Ovarian Sex Cord Stromal Tumors in Children and Adolescents—The European Standard Clinical Practice Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider, Kris‐Ann Schultz, Nora Schnitzler, Michael Abele, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Ines B. Brecht, Maja Cesen, Andrea Ferrari, Michaela Kuhlen, Malgorzata A. Krawczyk, Ricardo Lopez‐Almaraz, Yves Reguerre, Calogero Virgone, Daniel Orbach   +15 more
wiley   +1 more source

Maternal effect on sports performance traits in horses

Czech Journal of Animal Science, 2019
The aim of the study was to estimate the direct additive genetic effect and the additive maternal effect on the level of traits estimated during the Polish Jumping Championships for Young Horses.
Tomasz Próchniak, Iwona Rozempolska-Rucińska, Grzegorz Zięba   +2 more
doaj   +1 more source

Variance components estimation of residual errors in GPS precise positioning [PDF]

Geodetski Vestnik, 2016
Variance components analysis of residual errors remaining in the GPS double-difference phase observations is presented in this paper. These errors arise due to unmodeled ionospheric, tropospheric and multipath effects and limit the accuracy of n ...
Darko Anđić
doaj   +1 more source

Variance Components, Correlation and Path Coefficient Analysis of Morpho-Physiological and Yield Related Traits in Spider Plant (Gynandropsis gynandra (L.) Briq.) under Water-Stress Conditions

Agronomy, 2023
Drought is the most complex abiotic stress for crop production at the global level. Therefore, developing new African spider plant genotypes tolerant to drought stress is one of the best approaches to achieving and optimizing high yield potential with ...
Tinashe Chatara, Cousin Musvosvi, Aristide Carlos Houdegbe, Julia Sibiya   +3 more
doaj   +1 more source