Results 21 to 30 of about 3,314,720 (268)

Le discret et le continu dans l’enseignement des suites et des fonctions en fin de collège et au lycée

open access: yesAnnales de Didactique et de Sciences Cognitives, 2021
Notions pertaining to the Calculus field in France, up to the end of Seconde (10th grade), are mainly functions and their graphical representations. Curricula, followed by textbooks, integrate these notions into “the continuous”.
Sophie Rousse
doaj   +1 more source

Discrete complex analysis on planar quad-graphs [PDF]

open access: yes, 2015
We develop a linear theory of discrete complex analysis on general quad-graphs, continuing and extending previous work of Duffin, Mercat, Kenyon, Chelkak and Smirnov on discrete complex analysis on rhombic quad-graphs.
A Bobenko   +19 more
core   +2 more sources

Tropical Oriented Matroids [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
Tropical oriented matroids were defined by Ardila and Develin in 2007. They are a tropical analogue of classical oriented matroids in the sense that they encode the properties of the types of points in an arrangement of tropical hyperplanes – in much the
Silke Horn
doaj   +1 more source

Spectral Design of Discrete H2 Optimal Fault Detection Observer

open access: yesСовременные информационные технологии и IT-образование, 2022
The paper is devoted to the problem of additive fault detection observer design for discrete LTI plants with scalar measurement and external disturbance with the known spectral features.
Yaroslav Knyazkin
doaj   +1 more source

Discrete Gravitational Dimensions [PDF]

open access: yes, 2003
We study the physics of a single discrete gravitational extra dimension using the effective field theory for massive gravitons. We first consider a minimal discretization with 4D gravitons on the sites and nearest neighbor hopping terms.
A. Sugamoto   +13 more
core   +2 more sources

Genetic parameters of subjective and image-based horn fly abundance phenotypes

open access: yesFrontiers in Animal Science, 2023
The genetic basis of horn fly abundance remains largely unknown and only few heritability estimates are available based on small scale studies. In this study, one subjective and two image-based fly abundance phenotypes were analyzed.
Amanda M. Warner   +5 more
doaj   +1 more source

A New Discrete Mycorrhiza Optimization Nature-Inspired Algorithm

open access: yesAxioms, 2022
This paper presents the discrete version of the Mycorrhiza Tree Optimization Algorithm (MTOA), using the Lotka–Volterra Discrete Equation System (LVDES) formed by the Predator–Prey, Cooperative and Competitive Models.
Hector Carreon-Ortiz   +2 more
doaj   +1 more source

Energy Levels of "Hydrogen Atom" in Discrete Time Dynamics [PDF]

open access: yes, 2006
We analyze dynamical consequences of a conjecture that there exists a fundamental (indivisible) quant of time. In particular we study the problem of discrete energy levels of hydrogen atom.
Accardi L.   +18 more
core   +3 more sources

Models for some irreducible representations of so(m,C) in discrete Clifford analysis [PDF]

open access: yes, 2016
In this paper we work in the `split' discrete Clifford analysis setting, i.e. the m-dimensional function theory concerning null-functions of the discrete Dirac operator d, defined on the grid Zm, involving both forward and backward differences.
De Ridder, Hilde, Raeymaekers, Tim
core   +2 more sources

Storage sizing for embedding of local gas production in a micro gas grid

open access: yesEPJ Web of Conferences, 2014
In this paper we study the optimal control of a micro grid of biogas producers. The paper considers the possibility to have a local storage device for each producer, who partly consumes his own production, i.e. prosumer.
Alkano D.   +3 more
doaj   +1 more source

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