Results 51 to 60 of about 31,947 (163)

Space mapping method for bicubic spline spaces over Type-II hierarchical T-meshes

Graphical Models
This paper presents a space-mapping framework for constructing bicubic C2 spline spaces over Type-II hierarchical T-meshes. The main idea is to transform the analysis of bicubic splines on complex T-meshes into the study of bilinear spline spaces on the ...
Jingjing Liu, Fang Deng, Weihong Zhang, Jiansong Deng   +3 more
doaj   +1 more source

A Novel Hybrid Computational Technique to Study Conformable Burgers’ Equation

Mathematical and Computational Applications
A fully discrete computational technique involving the implicit finite difference technique and cubic Hermite splines is proposed to solve the non-linear conformable damped Burgers’ equation with variable coefficients numerically.
Abdul-Majeed Ayebire, Atul Pasrija, Mukhdeep Singh Manshahia, Shelly Arora   +3 more
doaj   +1 more source

T-spline simplification and local refinement

ACM SIGGRAPH 2004 Papers, 2004
A typical NURBS surface model has a large percentage of superfluous control points that significantly interfere with the design process. This paper presents an algorithm for eliminating such superfluous control points, producing a T-spline. The algorithm can remove substantially more control points than competing methods such as B-spline wavelet ...
Thomas W. Sederberg, David L. Cardon, G. Thomas Finnigan, Nicholas S. North, Jianmin Zheng, Tom Lyche   +5 more
openaire   +2 more sources

Characterization and error analysis of an N×N unfolding procedure applied to filtered, photoelectric x-ray detector arrays. II. Error analysis and generalization

Physical Review Special Topics. Accelerators and Beams, 2010
A five-channel, filtered-x-ray-detector (XRD) array has been used to measure time-dependent, soft-x-ray flux emitted by z-pinch plasmas at the Z pulsed-power accelerator (Sandia National Laboratories, Albuquerque, New Mexico, USA).
D. L. Fehl, G. A. Chandler, W. A. Stygar, R. E. Olson, C. L. Ruiz, J. J. Hohlfelder, L. P. Mix, F. Biggs, M. Berninger, P. O. Frederickson, R. Frederickson   +10 more
doaj   +1 more source

Hypothermia on the first day of ICU admission leads to increased in-hospital mortality in patients with subarachnoid hemorrhage

Scientific Reports
The relationship between early spontaneous hypothermia and adverse clinical outcomes in patients with subarachnoid hemorrhage (SAH) has not been paid much attention.
Wenyuan Du, Jingmian Yang, Yanfang Lou, Jiahua You   +3 more
doaj   +1 more source

Estimation of Suspended Sediment in Dam-impacted Streams Using Regression-based Methods

Doğal Afetler ve Çevre Dergisi
The estimation of suspended sediment (SS) is a crucial factor for dam reservoirs, river ecosystems, structural changes in water resources, various operational activities, environmental safety, and water management.
Mahir Kumantaş , Betül Mete, Sinan Nacar , Adem Bayram   +3 more
doaj   +1 more source

T-splines mesh generation for complex geometries: Multipatch-NURBS to product-form-T-splines conversion

Computational Mechanics
Abstract We present a T-splines mesh generation method for complex geometries, enabling good local mesh refinement in isogeometric analysis (IGA), with the continuity and smoothness desired. Good local mesh refinement enhances the IGA computational efficiency by having a higher density of control points only in places and directions ...
Takuya Terahara, Kenji Takizawa, Shohei Mikawa, Tayfun E. Tezduyar   +3 more
openaire   +1 more source

Estimating the effective reproduction number of HIV infections in Japan from 1985 to 2025: a Bayesian extended back calculation

Frontiers in Public Health
BackgroundHIV transmission among men having sex with men remains a concerning issue in Japan. Therefore, the purpose of the present study was to estimate the effective reproduction number R(t) of HIV by coupling a renewal process model with an existing ...
Seiko Fujiwara, Seiko Fujiwara, Hiroshi Nishiura, Hiroshi Nishiura, Hiroshi Nishiura   +4 more
doaj   +1 more source

Spatial assessment of rice straw yield under future climate pathways using interpretable stacked machine learning models

Discover Applied Sciences
This study develops a hybrid stacked ensemble (SE) machine learning framework integrated with CMIP6 climate projections to generate high-resolution spatial predictions of rice straw yield in Eastern India.
Satiprasad Sahoo, Chiranjit Singha, Ajit Govind   +2 more
doaj   +1 more source

Automatic and Interactive Mesh to T-Spline Conversion

, 2006
In Geometry Processing, and more specifically in surface approximation, one of the most important issues is the automatic generation of a quad-dominant control mesh from an arbitrary shape (e.g. a scanned mesh). One of the first fully automatic solutions was proposed by Eck and Hoppe in 1996.
Li, Wan Chiu, Ray, Nicolas, Lévy, Bruno
openaire   +2 more sources