Results 31 to 40 of about 104,357 (299)

Modeling And Manufacturing Of Freeform Curved Surface Based On Five-coordinate Numerical Control

open access: yesJournal of Applied Science and Engineering, 2022
Nowadays, the development of social science and technology is very fast, and all kinds of new digital products emerge as the times require. In terms of various research directions, in this paper, research on the modeling and manufacturing of freeform ...
Jianzhou Jiang
doaj   +1 more source

Computational behavior of a feasible direction method for linear programming [PDF]

open access: yes, 1989
We discuss a finite method of feasible directions for linear programs. The method begins with a BFS (basic feasible solution) and constructs a profitable direction by combining the updated columns of several nonbasic variables eligible to enter.
Murty, Katta G., Fathi, Yahya
core   +1 more source

Design of cylindrical honeycomb cores – Geometric consideration –

open access: yesMechanical Engineering Journal, 2018
Lightweight and rigid honeycomb cores have a feature as deployable structures, i.e., their shapes can be changed as desired from the viewpoint of manufacturing processes.
Sachiko ISHIDA
doaj   +1 more source

A method of feasible directions using function approximations, with applications to min max problems [PDF]

open access: yes, 1973
This paper presents a demonstrably convergent method of feasible directions for solving the problem min{φ(ξ)| gi(ξ)⩽0i=1,2,…,m}, which approximates, adaptively, both φ(x) and ▽φ(x).
Klessig, R, Polak, E
core   +1 more source

Utilizing FEM-Software to quantify pre- and post-interventional cardiac reconstruction data based on modelling data sets from surgical ventricular repair therapy (SVRT) and cardiac resynchronisation therapy (CRT)

open access: yesBioMedical Engineering OnLine, 2006
Background Left ventricle (LV) 3D structural data can be easily obtained using standard transesophageal echocardiography (TEE) devices but quantitative pre- and intraoperative volumetry and geometry analysis of the LV is presently not feasible in the ...
Verhey Janko F, Nathan Nadia S
doaj   +1 more source

An Approach to In Situ Evaluation of Timber Structures Based on Equalization of Non-Destructive and Mechanical Test Parameters

open access: yesBuildings, 2023
This paper addresses the challenges in evaluating the structural performance of built structures using non-destructive methods and in situ tests.
Andrej Josifovski   +7 more
doaj   +1 more source

On a classification of stationary points in nonlinear programming [PDF]

open access: yes, 1969
summary:In the paper the definition of the regular stationary point (M. Altman) is extended to be embracing all the points to which the method of feasible directions can converge if used without respect to the regularity ...
Hrouda, Jaroslav
core   +1 more source

Numerical Implementation of the Barcelona Basic Model Based on Return-Mapping Integration

open access: yesApplied Sciences, 2022
This paper implemented the Barcelona basic model (BBM) into the OpenGeoSys (OGS) platform for numerical modeling of the coupled hydro-mechanical (HM) behavior of unsaturated soil.
Zhenxing Ji   +4 more
doaj   +1 more source

Red-lesion extraction in retinal fundus images by directional intensity changes’ analysis

open access: yesScientific Reports, 2021
Diabetic retinopathy (DR) is an important retinal disease threatening people with the long diabetic history. Blood leakage in retina leads to the formation of red lesions in retina the analysis of which is helpful in the determination of severity of ...
Maryam Monemian, Hossein Rabbani
doaj   +1 more source

Feasible Direction Methods for Constrained Nonlinear Optimization: Suggestions for Improvements. [PDF]

open access: yes, 2007
This thesis concerns the development of novel feasible direction type algorithms for constrained nonlinear optimization. The new algorithms are based upon enhancements of the search direction determination and the line search steps. The Frank-Wolfe method is popular for solving certain structured linearly constrained nonlinear problems, although its ...
Mitradjieva-Daneva, Maria
openaire   +3 more sources

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