Results 111 to 120 of about 8,329 (301)

Genetic association between body energy measured throughout lactation and fertility in dairy cattle

open access: yesAnimal, 2010
The objective of this study was to quantify the genetic association of body energy assessed throughout lactation with a cow’s fertility. Nine direct and indirect body energy traits were defined at different stages of lactation. Four were daily records of
G. Banos, M.P. Coffey
doaj   +1 more source

Restricted Tweedie stochastic block models

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract The stochastic block model (SBM) is a widely used framework for community detection in networks, where the network structure is typically represented by an adjacency matrix. However, conventional SBMs are not directly applicable to an adjacency matrix that consists of nonnegative zero‐inflated continuous edge weights.
Jie Jian, Mu Zhu, Peijun Sang
wiley   +1 more source

Automated Diffuser Shape Optimization based on CFD Simulations and Surrogate Modeling

open access: yesJournal of Applied Fluid Mechanics, 2016
An approach for the optimization of laminar flow in diffusers is presented. The goal in our optimization process is to maximize diffuser performance and, in this way, pressure recovery by optimizing the geometry.
Mostafa Dehghani   +2 more
doaj  

Bezier curve conjugation for smooth curve joining and corner rounding

open access: yesОмский научный вестник
The authors propose an analytical method for the smooth connection of two Bezier curves of arbitrary degree using a connecting curve, which is also a Bezier curve.
O. V. Krivosheev   +2 more
doaj   +1 more source

Tchebycheffian B-Splines Revisited: An Introductory Exposition

open access: yes, 2019
Tchebycheffian splines are smooth piecewise functions where the different pieces are drawn from extended Tchebycheff spaces. They are a natural generalization of polynomial splines and can be represented in terms of an interesting set of basis functions,
Manni, Carla   +2 more
core  

Bayesian inverse ensemble forecasting for COVID‐19

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract Variations in strains of COVID‐19 have a significant impact on the rate of surges and on the accuracy of forecasts of the epidemic dynamics. The primary goal for this article is to quantify the effects of varying strains of COVID‐19 on ensemble forecasts of individual “surges.” By modelling the disease dynamics with an SIR model, we solve the ...
Kimberly Kroetch, Don Estep
wiley   +1 more source

An algebraic framework for geometrically continuous splines

open access: yes, 2023
Geometrically continuous splines are piecewise polynomial functions defined on a collection of patches which are stitched together through transition maps.
Mourrain, Bernard   +3 more
core  

When CSR Gaps Become Competitive Signals: How CEO Motivation Shapes Competitive Dissimilarity

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Prior research has primarily examined corporate social responsibility (CSR) directed toward stakeholders such as investors, consumers, and regulators, signaling trustworthiness and positive moral character. However, nonmarket strategies such as CSR may also be interpreted by firms in relation to competitors, suggesting that CSR may influence ...
Sascha P. Klein
wiley   +1 more source

Periodic exponential box splines on a three direction mesh

open access: yes, 1989
Multivariate “truncated Tchebycheff” functions which generalize the univariate Green's function on the one hand and the multivariate “truncated powers” on the other hand are constructed and analysed for the three direction mesh.
Ron, A, Dyn, N
core   +1 more source

Edge Fluid Turbulence Simulations of Stellarators With GRILLIX

open access: yesContributions to Plasma Physics, EarlyView.
ABSTRACT The edge fluid turbulence code GRILLIX has recently been extended from axisymmetric tokamak geometries to support 3D stellarator configurations. Following successful proof‐of‐principle simulations published in Stegmeir et al., we present here a comprehensive simulation of the Wendelstein 7‐AS stellarator.
Andreas Stegmeir   +4 more
wiley   +1 more source

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