Results 61 to 70 of about 383,058 (315)

3D Imaging of Dielectric Objects Buried under a Rough Surface by Using CSI

International Journal of Antennas and Propagation, 2015
A 3D scalar electromagnetic imaging of dielectric objects buried under a rough surface is presented. The problem has been treated as a 3D scalar problem for computational simplicity as a first step to the 3D vector problem.
Evrim Tetik, Ibrahim Akduman
doaj   +1 more source

3D Face Modeling Using the Multi-Deformable Method

Sensors, 2012
In this paper, we focus on the problem of the accuracy performance of 3D face modeling techniques using corresponding features in multiple views, which is quite sensitive to feature extraction errors.
Sangyoun Lee, Sunjin Yu, Joongrock Kim, Jinkyu Hwang   +3 more
doaj   +1 more source

2D-3D registration of CT vertebra volume to fluoroscopy projection: A calibration model assessment (doi:10.1155/2010/806094) [PDF]

, 2009
This study extends a previous research concerning intervertebral motion registration by means of 2D dynamic fluoroscopy to obtain a more comprehensive 3D description of vertebral kinematics. The problem of estimating the 3D rigid pose of a CT volume of a
P. Bifulco, Allen, R., R. Allen, ROMANO, MARIA, G. Pasquariello, CESARELLI, MARIO, G. P.a.s.q.u.a.r.i.e.l.l.o., Bifulco, P., Cesarelli, M., Romano, M., A. Fratini, Fratini, A., Pasquariello, G., M. Cesarelli, M. Romano, BIFULCO, PAOLO   +15 more
core   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

A Harmonic Algorithm for the 3D Strip Packing Problem

SIAM Journal on Computing, 2013
In the three-dimensional (3D) strip packing problem, we are given a set of 3D rectangular items and a 3D box $B$. The goal is to pack all the items in $B$ such that the height of the packing is minimized. We consider the most basic version of the problem, where the items must be packed with their edges parallel to the edges of $B$ and cannot be rotated.
Nikhil Bansal 0001, Xin Han, Kazuo Iwama, Maxim Sviridenko, Guochuan Zhang   +4 more
openaire   +3 more sources

Evaluating Energy Absorption Performance of Filled Lattice Structures

Advanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney, William P. King, Iwona Jasiuk   +2 more
wiley   +1 more source

Intermittency and regularity issues in 3D Navier-Stokes turbulence [PDF]

, 2005
Two related open problems in the theory of 3 D Navier-Stokes turbulence are discussed in this paper. The first is the phenomenon of intermittency in the dissipation field.
Gibbon, J. D., J. D. Gibbon, Gibbon, JD, Doering, CR, Doering, Charles R., Charles R. Doering   +5 more
core   +1 more source

A SOLUTION OF THE 3D NAVIER-STOKES PROBLEM

International Journal of Pure and Apllied Mathematics, 2014
Summary: The Cauchy problem for the 3D Navier-Stokes equations is reduced to the non-linear integral equations of Volterra-type, investigation of which, based on the Cauchy theorems for integrals of analytic and meromorphic functions, allows us to solve positively the long standing question on uniqueness and smoothness of the solution.
openaire   +2 more sources

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source

Component based problem solving environment

, 2002
The aim of the project described in this paper was to use modern software component technologies such as CORBA, Java and XML for the development of key modules which can be used for the rapid prototyping of application specific Problem Solving ...
Keane, A.J., A. J. Keane, Cox, S.J., A. J. G. Hey, Hey, A.J.G., Papay, J., J. Papay, S. J. Cox   +7 more
core   +1 more source