Results 81 to 90 of about 25,613,351 (218)

A MOLECULAR TIME SCALE FOR HUMAN EVOLUTION [PDF]

open access: green, 1969
Allan C. Wilson, Vincent M. Sarich
openalex   +1 more source

New Types of Convergence on Time Scales [PDF]

open access: yesarXiv, 2016
This paper is discussing about the notion of some new types of convergences namely $I$-convergence and $I^*$-convergence of a $\Delta$-measurable function $f$ on time scales $T$ by considering ideal on time scales $T$. This idea is further extended to the notion of statistical convergence of a $\Delta$-measurable function $f$ on time scales $T$.
arxiv  

Time scales and the asymptotics for the solutionsof discrete adiabatic oscillators

open access: yesМоделирование и анализ информационных систем, 2011
We develop a method of averaging for the study of linear systems of dynamic equations on time scales. We use the obtained results to construct the asymptotics for the solutions of some equations of discrete adiabatic oscillators.
P. N. Nesterov
doaj  

Solving the Wave Equation on Discrete Time Scales [PDF]

open access: yesarXiv
This paper presents a solution to an initial value problem for the 1-dimensional wave equation on time scales through the application of a Fourier transform and its inverse via contour integrals. The time scale of the spatial dimension is set to the integers and a broader class of discrete time scales, while the time dimension is set to the positive ...
arxiv  

New Criteria for Oscillation of Advanced Noncanonical Nonlinear Dynamic Equations

open access: yesMathematics
In this study, novel criteria are derived to ensure the oscillation of solutions in nonlinear advanced noncanonical dynamic equations. The obtained results are reminiscent of the criteria proposed by Hille and Ohriska for canonical dynamic equations ...
Taher S. Hassan   +3 more
doaj   +1 more source

A Note on Averaging Principles for Fractional Stochastic Differential Equations

open access: yesFractal and Fractional
Over the past few years, many scholars began to study averaging principles for fractional stochastic differential equations since they can provide an approximate analytical method to reduce such systems.
Jiankang Liu   +5 more
doaj   +1 more source

A System for Recording Air Concentrations of Zinc Sulfide Fluorescent Pigment on a Real-Time Scale [PDF]

open access: bronze, 1967
P.W. Nickola   +3 more
openalex   +1 more source

Time Scales of Physico-Chemicaly Driven Processes in Desulphurization CaO-Al2O3 Slag

open access: yesThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2009
The paper is dealing with the expression of times scales associated to different physically and physico-chemically driven processes taking place on the slag side of the interface CaO-Al2O3 slags-steel, specific to the steel refining process.
Petre Stelian NITA
doaj  

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