نتایج جستجو برای: growth curve models

تعداد نتایج: 1781443  

Journal: :Journal of behavioral data science 2023

Bayesian growth curve modeling is a popular method for studying longitudinal data. In this study, we discuss flexible extension, the piecewise model (BPGCM), which allows researcher to break up trajectory into phases joined at change points called knots. By fitting BPGCMs, can specify three or more of without concern identification. Our goal provide substantive researchers with guide implementi...

Journal: :آب و خاک 0
فتحعلیان فتحعلیان موذن زاده موذن زاده نوری امام زاده یی نوری امام زاده یی

a precise estimation of water consumption throughout a crop's growth season and of the amount of water consumed in each growth stage may play an important role in water resources management, integrated water and soil management, and proper irrigation scheduling. in a greenhouse, this faces with the conditions specific to this environment. this study was conducted to propose a model to make an a...

Abstract Today, population growth is one of the most important issues facing the countries because it affects the patterns of sustainable economic growth. Population growth is a key element of semi-endogenous economic growth models. Semi-endogenous growth states that economic growth is correlated with the growth rate of effort in research and development. The common features of these models ...

A. Naazie B.B. Kayang I.M. Barchia P.F. Arthur, R. Osei-Amponsah

The logistic, Gompertz, Richards and asymmetric logistic growth curve models were fitted to body weight data of local Ghanaian chickens and French SASSO T44 chickens. All four growth models provided good fit for each sex by genotype growth data with R2 values ranging from 86.7% to 96.7%. The rate constant parameter, k, ranged between 0.137 and 0.271 and were significantly different from zero fo...

Journal: :medical laboratory journal 0
leili shokoohizadeh department of laboratory medical sciences

abstract        typing of bacteria is an important part of epidemiological studies on nosocomial infections. bacterial identification methods have dramatically improved in recent years, which is mainly due to advancements in the field of molecular biotechnology. in many cases, molecular techniques have replaced phenotypic typing methods. currently, a wide range of bacterial typing techniques is...

Journal: :اقتصاد مقداری 0
roohollah zare دانشگاه آزاد اسلامی، واحد بیضا، گروه اقتصاد، فارس، ایران seyed aziz arman دانشگاه شهید چمران اهواز، گروه اقتصاد، اهواز، ایران

the present paper examines the mitigating effect of monetary and fiscal policies on the “growth laffer curve” (glc) using a panel data of 38 high income countries over the period 2003-2012. adopting generalised method of moments (gmm) estimators, the paper finds evidence substantiating the presence of an inverted-u glc. moreover, the evidence suggests that the glc shifts downward by employing e...

Journal: :Mathematical biosciences 2002
A Tsoularis J Wallace

A variety of growth curves have been developed to model both unpredated, intraspecific population dynamics and more general biological growth. Most predictive models are shown to be based on variations of the classical Verhulst logistic growth equation. We review and compare several such models and analyse properties of interest for these. We also identify and detail several associated limitati...

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