Results 11 to 20 of about 1,975,129 (302)

Cosmological Parameter Estimation with Genetic Algorithms

Universe, 2023
Genetic algorithms are a powerful tool in optimization for single and multimodal functions. This paper provides an overview of their fundamentals with some analytical examples. In addition, we explore how they can be used as a parameter estimation tool in cosmological models to maximize the likelihood function, complementing the analysis with the ...
Ricardo Medel-Esquivel, Isidro Gómez-Vargas, Alejandro A. Morales Sánchez, Ricardo García-Salcedo, José Alberto Vázquez   +4 more
openaire   +3 more sources

Genetic and phenotypic trends for growth traits of buffaloes in Brazil

Italian Journal of Animal Science, 2010
The objectives this paper were to estimate genetic parameters and genetic and phenotypic trends of birth weight (BWT) and weights adjusted to 205 (WT205), 365 (WT365) and 550 (P550) days of age of beef buffaloes born from 1985 to 2003 in Brazil.
W.R. Lamberson, J.C. de Souza, A. Amorim Ramos, P.L. Souza Carneiro, C.H. Mendes Malhado   +4 more
doaj   +1 more source

Genetic trends of Mexican zebu cattle populations

Italian Journal of Animal Science, 2022
In Mexico, the genetic evaluations in Zebu breeds began in 2011 and there are no studies about the genetic progress achieved. Thus, this research aimed to quantify and analyse the genetic progress for growth traits in the Mexican Zebu beef cattle ...
Neon Larios-Sarabia, Joel Domínguez-Viveros, Jorge Hidalgo, Rodolfo Ramírez-Valverde, Rafael Núñez-Domínguez, Ricardo Emmanuel Martínez-Rocha, Felipe Alonso Rodríguez-Almeida, Cesar Villegas-Gutiérrez, Fernando Saiz-Pineda   +8 more
doaj   +1 more source

The estimation of genetic parameters for growth curve traits in Raeini Cashmere goat described by Gompertz model [PDF]

, 2018
The objectives of this study were to describe growth curve of Raeini Cashmere goat applying the Gompertz growth model and genetic evaluation of growth curve-related traits including model parameters of A, B and K, inflection age (IA) and inflection ...
Ghiasi, Heydar, Lupi, T.M., Mokhtari, M.S.   +2 more
core   +1 more source

Dynamic Parameter Encoding for Genetic Algorithms [PDF]

Machine Learning, 1992
The common use of static binary place-value codes for real-valued parameters of the phenotype in Holland's genetic algorithm (GA) forces either the sacrifice of representational precision for efficiency of search or vice versa. Dynamic Parameter Encoding (DPE) is a mechanism that avoids this dilemma by using convergence statistics derived from the GA ...
Nicol N. Schraudolph, Richard K. Belew
openaire   +2 more sources

GENETIC CONTRIBUTION OF RAM ON LITTER SIZE IN ŠUMAVA SHEEP [PDF]

Poljoprivreda, 2015
The objective of the present study was to quantify the service sire effect in terms of (co) variance components of born and weaned lambs number and to propose models for the potential inclusion of this effect in the linear equations for breeding value ...
Jitka Schmidová, Michal Milerski , Alena Svitáková, Luboš Vostrý   +3 more
doaj   +1 more source

Key Genetic Parameters for Population Management [PDF]

Frontiers in Genetics, 2019
Population management has the primary task of maximizing the long-term competitiveness of a breed. Breeds compete with each other for being able to supply consumer demands at low costs and also for funds from conservation programs. The competition for consumer preference is won by breeds with high genetic gain for total merit who maintained a ...
Wellmann, Robin, Bennewitz, Jörn
openaire   +3 more sources

Combining polynomial chaos expansions and genetic algorithm for the coupling of electrophysiological models [PDF]

, 2019
The number of computational models in cardiac research has grown over the last decades. Every year new models with di erent assumptions appear in the literature dealing with di erences in interspecies cardiac properties.
A Mahajan, AL Hodgkin, BA Lawson, BA Lawson, CM Armstrong, D Xiu, F Bezanilla, GW Beeler, H Li, J Feinberg, JR Terkildsen, K Yanagihara, MA Tatang, Marco Ratto, P Hauseux, S Gattoni, SV Pandit, VG Eck   +17 more
core   +2 more sources

Patterns of genetic variation in bud flushing of Abies alba populations

iForest - Biogeosciences and Forestry, 2018
In the spring of 2007, 51 full-sib and six half-sib families of European silver fir were obtained through controlled and open pollinations from the same clones in a seed orchard.
Mihai G, Mirancea I, Birsan M-V, Dumitrescu A   +3 more
doaj   +1 more source

Variabilidade genética em clones de Eucalyptus spp. para Grajaú, estado do Maranhão. Genetic variability in clones of Eucalyptus spp. for Grajaú, state of Maranhão. [PDF]

Revista do Instituto Florestal, 2017
Esta pesquisa teve por objetivo a seleção de clones de eucaliptos em teste em Grajaú-MA, Brasil, visando ao aumento na produtividade. Os caracteres avaliados foram diâmetro à altura do peito – DAP (cm) e altura – ALT (m).
Evandro Vagner TAMBARUSS, Fernanda Bortolanza PEREIRA, Vinícius André AZEVEDO, Fabiana Schmidt Bandeira PERES, Andrea Nogueira DIAS, Rodrigo de Andrade FURLAN   +5 more
doaj   +1 more source