نتایج جستجو برای: fitting length

تعداد نتایج: 352290  

Journal: :Mechanical Engineering 2009

Journal: :Physica Status Solidi (rrl) 2023

The quantum Hall effect is one of the most extensively studied topological effects in solid state physics. transitions between different states exhibit critical phenomena described by universal exponents. Numerous numerical finite size scaling studies have focused on exponent $\nu$ for correlation length. In such it important to take proper account irrelevant corrections scaling. Recently, Dres...

Journal: :علوم گیاهان زراعی ایران 0
خالد سلیمی پردیس کشاورزی و منابع طبیعی دانشگاه تهران سید محمد باقر حسینی پردیس کشاورزی و منابع طبیعی دانشگاه تهران رضا توکل افشاری پردیس کشاورزی و منابع طبیعی دانشگاه تهران

in this study, the effect of application time (immediately and one week after harvest) of some chemicals (rindite, carbon disulphide, gibberellic acid and thiourea) on breaking of dormancy and sprouting of potato (solanum tuberosum l., cv., marfona) minitubers was investigated. for the carbon disulphide (25 ml m-3 for four days) and rindite (0.2 ml l-1 for two days) application, minitubers were...

Journal: :Computers & mathematics with applications 2023

Neural closure models have recently been proposed as a method for efficiently approximating small scales in multiscale systems with neural networks. The choice of loss function and associated training procedure has large effect on the accuracy stability resulting model. In this work, we systematically compare three distinct procedures: "derivative fitting", "trajectory fitting" discretise-then-...

2008
Mayra Osorio Guillem Anglada Susana Lizano Paola D’Alessio

We present a model aimed to reproduce the observed spectral energy distribution (SED) as well as the ammonia line emission of the G31.41+0.31 hot core. The hot core is modeled as an infalling envelope onto a massive star that is undergoing an intense accretion phase. We assume an envelope with a density and velocity structure resulting from the dynamical collapse of a singular logatropic sphere...

Journal: :Systematic biology 2011
Stefan Ekman Rakel Blaalid

In popular use of Bayesian phylogenetics, a default branch-length prior is almost universally applied without knowing how a different prior would have affected the outcome. We performed Bayesian and maximum likelihood (ML) inference of phylogeny based on empirical nucleotide sequence data from a family of lichenized ascomycetes, the Psoraceae, the morphological delimitation of which has been co...

Salt and drought are two major environmental stresses that affect growth and development of plants. In order to study the effects of sodium chloride and polyethylene glycol (6000) on germination characteristics and early seedling growth of redroot pigweed (Amaranthus retroflexus), two completely randomized designs with 4 replications were conducted at Weed Research Laboratory of Bu-Ali Sina Uni...

Journal: :Agronomy 2022

Regression models to predict leaf area and weight in common bean (Phaseolus vulgaris) were fitted using the three leaflets of leaves. A total 1504 leaves from 40 genotypes collected, covering a large range sizes. Width, length, area, measured for each leaflet. The was obtained by sum left, central, right leaflets. dataset randomly divided into training validation sets. set used model fitting se...

2000
Mário A. T. Figueiredo Anil K. Jain

We propose a new method for fitting mixture models that performs component selection and does not require external initialization. The novelty of our approach includes: a minimum message length (MML) type model selection criterion; the inclusion of the criterion into the expectation-maximization (EM) algorithm (which also increases its ability to escape from local maxima); an initialization str...

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