Results 31 to 40 of about 442,794 (160)

EFFECT OF PRESTRESSING FORCE ONTORSION RESISTANCE OF CONCRETE BEAMS

open access: yesJournal of Engineering, 2007
This study presents an experimental and theoretical investigation of torsion behavior of prestressed concrete rectangular beams without ordinary (or typical) reinforcement.
Husain M. Husain   +2 more
doaj   +1 more source

MATHEMATICAL SIMULATION OF FLOW THROUGH HOLLOW FIBRE MEMBRANE UNDER CONSTANT HYDRAULIC CONDUCTIVITY

open access: yesJournal of Engineering, 2006
Distilled water flow through a virgin hollow fibre membrane, HFM is considered as steady nonuniform since the fibre’s wall hydraulic conductivity coefficient is kept constant along the fibre and unchanged during the operation.
Riyadh Zuhair Al-Zubaidy
doaj   +1 more source

Mathematical model of concrete biological corrosion

open access: yesMagazine of Civil Engineering, 2020
As objects for study samples of cement concrete exposed to biological growth-around have been used. A physical and mathematical model of diffusion processes in system "cement concrete-biofilm-liquid", taking into account the kinetics of the processes of ...
Sergey Fedosov, Svetlana Loginova
doaj   +1 more source

MATHEMATICAL MODEL MANIPULATOR ROBOTS

open access: yesInternational Journal of Advanced Studies, 2015
A mathematical model to describe the dynamics of manipulator robots. Mathematical model are the implementation of the method based on the Lagrange equation and using the transformation matrices of elastic coordinates.
O. N. Krakhmalev
doaj  

A simple mathematical model of mosquito’s dynamics at stationary environmental conditions [PDF]

open access: yesComputational Ecology and Software, 2018
Mathematical model of population dynamics with two types of individuals (mosquitoes which are malaria transmission vectors, and mosquitoes which are not transmission vectors) is under consideration.
L.V. Nedorezov   +2 more
doaj  

The mathematical model of inner migration

open access: yesLietuvos Matematikos Rinkinys, 2016
The model of inner migration is applied when considering the percentage of inhabitants residing in administrative units of a state in different time units.
Vaidotas Kanišauskas
doaj   +1 more source

Mathematical model of position hydraulic drive

open access: yesВестник СибАДИ, 2017
The article presents a mathematical model of the position hydraulic drive, including a feedback loop rotary cylinder. A design scheme, compiled on the basis of the concept developed by the hydraulic circuit of hydraulic drive position, as well as the ...
A. V. Zhdanov
doaj   +1 more source

A compartmental model for Hepatitis B virus incorporating vaccination, medication, liver transplantation and environmental persistence

open access: yesMathematical and Computer Modelling of Dynamical Systems
Hepatitis B virus (HBV) remains a major public health concern because of its chronic progression and severe liver complications. We propose a compartmental model describing HBV transmission that incorporates vaccination, antiviral treatment, liver ...
Saddam Hussain   +5 more
doaj   +1 more source

A mathematical model of retinal receptive fields capable of form and color analysis

open access: yesImpulse: The Premier Undergraduate Neuroscience Journal, 2004
In an effort to understand the workings of the retinal receptive fields, Enroth-Cugell and Robson developed a mathematical model that utilized the difference-of-Gaussian (DOG) function, an equation in which the inhibitory portion of a receptive field is ...
Sara N. Blythe, John Krantz
doaj  

Mathematical model of a fluxgate magnetometer

open access: yesMATEC Web of Conferences, 2018
In paper analytical equations for calculate the electromotive force in the measuring coil of the fluxgate magnetometer independent of the drive signal frequency content are presented. Also, the equations for es-timation of the fluxgate sensitivity at any
Baranov Pavel F.   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy