Results 51 to 60 of about 24,008 (184)

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

The Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li, Mike Schindler, Martha Paskin, Venkata A. Surapaneni, Elliott Scott, Sabine Hauert, Nicholas Payne, David E. Cade, Jeremy A. Goldbogen, Frederik H. Mollen, Daniel Baum, Sean Hanna, Mason N. Dean   +12 more
wiley   +1 more source

IGA-based Multi-Index Stochastic Collocation for random PDEs on arbitrary domains

, 2019
This paper proposes an extension of the Multi-Index Stochastic Collocation (MISC) method for forward uncertainty quantification (UQ) problems in computational domains of shape other than a square or cube, by exploiting isogeometric analysis (IGA ...
Beck, Joakim, Tamellini, Lorenzo, Tempone, Raúl   +2 more
core   +1 more source

A Survey of Methods for Constructing 3D Urban Models From Point Clouds

Computer Graphics Forum, EarlyView.
The survey outlines a general process for constructing 3D models from point clouds and categorizes the methods based on their use of templates, basic surface primitives, hybrid approaches, or linear primitives. Additionally, the survey reviews the datasets and benchmarks that are essential for testing and training the developed methods.
Chiara Romanengo, Silvia Biasotti, Bianca Falcidieno, Daniela Cabiddu, Elia Moscoso Thompson, Michela Spagnuolo   +5 more
wiley   +1 more source

Block‐Structured Meshing in Coupled Problems With Moving Domains

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT Structured mesh generation is a delicate task in (multi‐physics) simulations on moving domains. For a given geometry, such meshes may be generated based on a block‐structure: This is a coarse‐scale representation of the geometry using blocks with the exact geometry and desired grading information assigned to the block edges. Based on the block‐
Teresa Schalk, Thomas‐Peter Fries
wiley   +1 more source

NURBS‐enhanced finite element method (NEFEM) [PDF]

International Journal for Numerical Methods in Engineering, 2008
AbstractAn improvement to the classical finite element (FE) method is proposed. It is able to exactly represent the geometry by means of the usual CAD description of the boundary with non‐uniform rational B‐splines (NURBS). Here, the 2D case is presented.
Sevilla Cárdenas, Rubén, Fernández Méndez, Sonia, Huerta, Antonio   +2 more
openaire   +10 more sources

Watermarking Algorithms for 3D NURBS Graphic Data

EURASIP Journal on Advances in Signal Processing, 2004
Two watermarking algorithms for 3D nonuniform rational B-spline (NURBS) graphic data are proposed: one is appropriate for the steganography, and the other for watermarking.
Jae Jun Lee, Nam Ik Cho, Sang Uk Lee
doaj   +1 more source

A Comprehensive Library of Stenosis Geometrical Models: Review and Guidelines for Hemodynamic Simulations and Stent Design

Engineering Reports, Volume 8, Issue 3, March 2026.
Classification of blood flow regimes: Spatial variation of endothelial shear stress (ESS) patterns across an atherosclerotic lesion. ABSTRACT Accurate geometrical representation of stenosis is essential for stent design, surgical planning, and computational fluid dynamics (CFD) simulations, as even minor shape variations significantly alter hemodynamic
Mohammad Javad Nazari, Abolfazl Mirani, Mohammad Javanbakht, Bentolhoda Mahdizadeh, Mohaddeseh Hedayatzadeh   +4 more
wiley   +1 more source

Biomechanical Analysis and Injury Prediction in Pilots With Lumbar Spondylolysis Under Different Seat Inclination Angles

JOR SPINE, Volume 9, Issue 1, March 2026.
The biomechanical responses of three lumbar models under both seat angles remain below injury thresholds. However, the occurrence of spondylolysis at a 22° angle poses a higher risk. ABSTRACT Background This study aims to quantify the biomechanical effects of different seat inclinations on the normal and spondylolysis lumbar of pilots under typical ...
Mengmeng Jin, Yingwei Li, Jiatao Wang, Qianxiang Zhou, Zhongqi Liu, Pan Guo   +5 more
wiley   +1 more source

On two-field NURBS-based isogeometric formulation for incompressible media problems

Vietnam Journal of Mechanics, 2013
This paper presents u-p mixed formulation relied on the framework of NURBS-based Isogeometric approach (IgA) for incompressible problems. In mixed method, displacement (velocity) field is approximated using NURBS basis functions with one order higher ...
Tran Vinh Loc, Thai Hoang Chien, Nguyen Xuan Hung   +2 more
doaj   +1 more source

Effect of the Strut Thickness on the Mechanical Properties, Deformation, and Failure Mechanisms of Vascular Bundle–Inspired Structures

Engineering Reports, Volume 8, Issue 2, February 2026.
The vascular bundle–inspired structure design involved developing a unit cell and rotating it by 45° for 2D/3D assembly. Unit cells varied in strut thickness (t) from 0.2 to 1.15 mm. Finite element model (FEM) analysis under quasi‐static compression yielded stress–strain curves and stress/strain maps.
Fredrick Mwema, Ndivhuwo Ndou
wiley   +1 more source