نتایج جستجو برای: positive mathematical

تعداد نتایج: 862710  

Journal: :Australian Journal of Agricultural and Resource Economics 2020

Introduction: The aim of this study was to determine the role of meta-cognition and verbal ability in prediction of the mathematical performance of preschool children. Materials and Methods: This study was descriptive and correlational. Based on Morgan table band cluster sampling method, a sample of 196 preschool children were selected from preschool children in Ilkhechi during 2016-2017. The m...

2015
Dylan Ross Konstantinos Lagogiannis Barbara Webb

To better understand the role of natural dynamics in motor control, we have constructed a mathematical model of crawling mechanics in larval Drosophila. The model accounts for key anatomical features such as a segmentally patterned, viscoelastic outer body wall (cuticle); a non-segmented inner cavity (haemocoel) filled with incompressible fluid that enables visceral pistoning; and claw-like pro...

In this paper, a generalized mathematical model of spread of infectious disease as SIRS epidemic model is considered as a nonlinear system of differential equation. We prove that for positive initial conditions the resulting equivalence system has positive solution and under some hypothesis, this system with initial positive condition, has a positive $T$-periodic solution which is globally asym...

Journal: :Australian Journal of Agricultural and Resource Economics 2017

Journal: :International Journal of Computational Economics and Econometrics 2020

Journal: :Computer Vision and Image Understanding 2013
Isabelle Bloch Alain Bretto

The focus of this article is to develop mathematical morphology on hypergraphs. To this aim, we define lattice structures on hypergraphs on which we build mathematical morphology operators. We show some relations between these operators and the hypergraph structure, considering in particular transversals and duality notions. Then, as another contribution, we show how mathematical morphology can...

2005
Erwin Schmid Franz Sinabell

In agricultural economics, several calibration and aggregation approaches have evolved in mathematical programming models. This article combines in a linear programming model features of the Positive Mathematical Programming method with an aggregation approach that is constrained to the production possibility set spanned by a convex combination of observed production activities. The combination...

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