Results 1 to 10 of about 312,874 (254)

Viscoelastic Modulus Reconstruction Using Time Harmonic Vibrations [PDF]

open access: yesMathematical Modelling and Analysis, 2015
This paper presents a new iterative reconstruction method to provide high-resolution images of shear modulus and viscosity via the internal measurement of displacement fields in tissues. To solve the inverse problem, we compute the Frechet derivatives of
Habib Ammari   +2 more
doaj   +6 more sources

Determination of the longitudinal modulus of elasticity in structural sawn wooden beams by the least squares method

open access: yesVértices, 2012
This paper proposes an alternative method of calculation based on the Least Squares Method to determine the longitudinal modulus of elasticity in structural-sized wooden beams.
André Luis Christoforo   +5 more
doaj   +3 more sources

Predicting Resilient Modulus of Clayey Subgrade Soils by Means of Cone Penetration Test Results and Back-Propagation Artificial Neural Network [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2022
Resilient modulus (Mr) of subgrade soils is considered as one of the most important factors for designing flexible pavements using empirical methods as well as mechanistic-empirical methods.
Ali Reza Ghanizadeh   +3 more
doaj   +1 more source

GNU Octave and Python Implementation of Shor's r-Algorithm with Adaptive Step Control

open access: yesКібернетика та комп'ютерні технології, 2022
r-algorithms, or subgradient methods with dilation of space in the direction of the difference of two sequential subgradients, were proposed by N.Z.Shor in 1970 in his doctoral thesis. Respective software implementations proved to be competitive with the
Petro Stetsyuk   +2 more
doaj   +1 more source

Use of the Shor’s r-Algorithm in Linear Robust Optimization Problems

open access: yesКібернетика та комп'ютерні технології, 2021
The paper is devoted to the description of a new approach to the construction of algorithms for solving linear programming problems (LP-problems), in which the number of constraints is much greater than the number of variables.
P. Stetsyuk   +3 more
doaj   +1 more source

Development of Predicting Model for Clay Subgrade Soil Resilient Modulus based on the Results of Cone Penetration Test using Evolutionary Polynomial Regression Method [PDF]

open access: yesپژوهش‌های زیرساخت‌های عمرانی, 2021
Accurate determination of resilience modulus (Mr) of pavement subgrade soil is one of the important factors for successful design of pavement structure.
Ali Reza Ghanizadeh, Ali Delaram
doaj   +1 more source

Alternative methodology for calculating the modulus of elasticity of wooden beams of structural dimensions [PDF]

open access: yesEngenharia Agrícola, 2014
This study aims to present an alternative calculation methodology based on the Least Squares Method for determining the modulus of elasticity in bending wooden beams of structural dimensions.
André L. Christoforo   +7 more
doaj   +1 more source

Weibull Modulus Estimated by the Non-linear Least Squares Method: A Solution to Deviation Occurring in Traditional Weibull Estimation [PDF]

open access: yesMetallurgical and Materials Transactions A, 2017
Abstract The Maximum Likelihood method and the Linear Least Squares (LLS) method have been widely used to estimate Weibull parameters for reliability of brittle and metal materials. In the last 30 years, many researchers focused on the bias of Weibull modulus estimation, and some improvements have been achieved, especially in the case of the ...
T. Li, W. D. Griffiths, J. Chen
openaire   +1 more source

Robust Data Fusion of UAV Navigation Measurements with Application to the Landing System

open access: yesRemote Sensing, 2020
To perform precise approach and landing concerning an aircraft in automatic mode, local airfield-based landing systems are used. For joint processing of measurements of the onboard inertial navigation systems (INS), altimeters and local landing systems ...
Kirill Kolosov   +2 more
doaj   +1 more source

Topology Optimization of Multi-Materials Compliant Mechanisms

open access: yesApplied Sciences, 2021
In this article, a design method of multi-material compliant mechanism is studied. Material distribution with different elastic modulus is used to meet the rigid and flexible requirements of compliant mechanism at the same time.
Wenjie Ge, Xin Kou
doaj   +1 more source

Home - About - Disclaimer - Privacy