Results 31 to 40 of about 2,550,692 (341)

THE MATHEMATICAL MODEL OF DOME COVERING INDUSTRIAL FACILITY

open access: yesArchitecture and Engineering, 2017
A statically determinate flat truss models the industrial facility's arch. To derive dependence of structural deflection on the number of panels in a span, the Maxwell–Mohr equation, computer mathematics system Maple and the induction method are applied.
Mikhail Kirsanov, Sergei Astahov
doaj   +1 more source

Analytical and Numerical Investigation for the Inhomogeneous Pantograph Equation

open access: yesAxioms
This paper investigates the inhomogeneous version of the pantograph equation. The current model includes the exponential function as the inhomogeneous part of the pantograph equation.
Faten Aldosari, Abdelhalim Ebaid
doaj   +1 more source

General solutions of the Laplace equation

open access: yesPartial Differential Equations in Applied Mathematics, 2022
With the purpose of concisely and effectively obtaining the general or exact solutions of partial differential equations (PDEs), we put forward some universal Z1transformations in present paper.
Hong Lai Zhu
doaj   +1 more source

A novel analytical treatment for the Ambartsumian delay differential equation with a variable coefficient

open access: yesAIMS Mathematics
The Ambartsumian delay differential equation with a variable coefficient is considered in this paper. An effective transformation is produced to convert the extended Ambartsumian equation to the pantograph model.
Rana M. S. Alyoubi   +3 more
doaj   +1 more source

An inductive method of calculation of the deflection of the truss regular type

open access: yesArchitecture and Engineering, 2016
In this paper, the author proposes a regular option of statically determinate flat truss with a lattice of Shukhov's type working under beam scheme. By induction, using Maple computer algebra system, the exact formula for the mid-span deflection under ...
Mikhail Kirsanov
doaj   +1 more source

Exact solutions to supergravity [PDF]

open access: yesNuclear Physics B, 1997
18 pages, latex, uses a4.sty, no ...
openaire   +3 more sources

Exact solution of a spin-ladder model

open access: yes, 1999
An integrable spin-ladder model with nearest-neighbor exchanges and biquadratic interactions is proposed. With the Bethe ansatz solutions of the model hamiltonian, it is found that there are three possible phases in the ground state, i.e., a rung ...
A. A. Nersesyan   +28 more
core   +1 more source

Exact Operator Solution of $A_2$-Toda Field Theory [PDF]

open access: yes, 1998
Quantum $A_2$-Toda field theory in two dimensions is investigated based on the method of quantizing canonical free field. Toda exponential operators associated with the fundamental weights are constructed to the fourth order in the cosmological constant.
Fujiwara, T., Igarashi, H., Takimoto, Y.
core   +3 more sources

Sickle Cell Disease Is an Inherent Risk for Asthma in a Sibling Comparison Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Sickle cell disease (SCD) and asthma share a complex relationship. Although estimates vary, asthma prevalence in children with SCD is believed to be comparable to or higher than the general population. Determining whether SCD confers an increased risk for asthma remains challenging due to overlapping symptoms and the ...
Suhei C. Zuleta De Bernardis   +9 more
wiley   +1 more source

Changes in Body Composition in Children and Young People Undergoing Treatment for Acute Lymphoblastic Leukemia: A Systematic Review and Meta‐Analysis

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Ongoing evidence indicates increased risk of sarcopenic obesity among children and young people (CYP) with acute lymphoblastic leukemia (ALL), often beginning early in treatment, persisting into survivorship. This review evaluates current literature on body composition in CYP with ALL during and after treatment.
Lina A. Zahed   +5 more
wiley   +1 more source

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