Results 51 to 60 of about 3,176 (221)

Local Convexity-Preserving C2 Rational Cubic Spline for Convex Data

The Scientific World Journal, 2014
We present the smooth and visually pleasant display of 2D data when it is convex, which is contribution towards the improvements over existing methods. This improvement can be used to get the more accurate results.
Muhammad Abbas, Ahmad Abd Majid, Jamaludin Md. Ali   +2 more
doaj   +1 more source

An efficient data structure for calculation of unstructured T-spline surfaces

Visual Computing for Industry, Biomedicine, and Art, 2019
To overcome the topological constraints of non-uniform rational B-splines, T-splines have been proposed to define the freeform surfaces. The introduction of T-junctions and extraordinary points makes it possible to represent arbitrarily shaped models by ...
Wei Wang, Yang Zhang, Xiaoxiao Du, Gang Zhao   +3 more
doaj   +1 more source

Lifespan Pancreas Morphology for Control Versus Type 2 Diabetes Using AI on Largescale Clinical Imaging

Clinical Anatomy, EarlyView.
ABSTRACT Understanding how pancreas size and shape change with normal aging is critical for establishing a baseline to detect deviations in type 2 diabetes and other pancreatic disease. We measure pancreas size and shape using morphological measurements from early development through aging (ages 0–90).
Lucas W. Remedios, Chloe Cho, Trent M. Schwartz, Dingjie Su, Gaurav Rudravaram, Chenyu Gao, Aravind R. Krishnan, Adam M. Saunders, Michael E. Kim, Shunxing Bao, Thomas A. Lasko, Alvin C. Powers, Bennett A. Landman, John Virostko   +13 more
wiley   +1 more source

Positivity and Monotonicity Preserving Biquartic Rational Interpolation Spline Surface

Journal of Applied Mathematics, 2014
A biquartic rational interpolation spline surface over rectangular domain is constructed in this paper, which includes the classical bicubic Coons surface as a special case.
Xinru Liu, Yuanpeng Zhu, Shengjun Liu
doaj   +1 more source

T-Spline Surface Toolpath Generation Using Watershed-Based Feature Recognition

Applied Sciences, 2020
The freeform surface is treated as a single machining region for most traditional toolpath generation algorithms. However, due to the complexity of a freeform surface, it is impossible to produce a high-quality surface using one unique machining process.
Yazui Liu, Gang Zhao, Pengfei Han
doaj   +1 more source

Dual‐Function Electrocatalysis: Simultaneous Wastewater Remediation and Hydrogen Evolution—A Comprehensive Review

Carbon Energy, EarlyView.
Replacing the oxygen evolution reaction with the electro‐oxidation of pollutants and waste streams offers an energy‐efficient route for simultaneous hydrogen production and pollutant remediation. This review summarizes the reaction mechanisms, catalyst design principles, and emerging paired‐electrolysis strategies that govern activity, selectivity ...
Safa Al‐Yahyaey, Rashid Al‐Hajri, Ala'a H. Al‐Muhtaseb, Hussein A. Younus, Mohammed Al‐Abri   +4 more
wiley   +1 more source

Formic‐Acid In Situ Hydrogen Enables Programmable Ru–Pd–Pt/C Trimetallic Interfaces for Durable Acidic HER

Carbon Energy, EarlyView.
Bamboo diaphragm−derived carbon is used as a support to prepare Ru–Pd–Pt/C catalysts through a stepwise reduction strategy. The Ru–Pd interface promotes formic acid activation and induces Pt deposition. The metallic interface of Ru–Pd–Pt/C enables H* generation, transfer, and recombination, thereby improving Pt utilization, acidic HER activity, and PEM
Liangmeng Ni, Aiyue Huang, Xin Feng, Zhijia Liu   +3 more
wiley   +1 more source

Shape Designing of Engineering Images Using Rational Spline Interpolation

Advances in Materials Science and Engineering, 2015
In modern days, engineers encounter a remarkable range of different engineering problems like study of structure, structure properties, and designing of different engineering images, for example, automotive images, aerospace industrial images ...
Muhammad Sarfraz, Munaza Ishaq, Malik Zawwar Hussain   +2 more
doaj   +1 more source

Range-Restricted Surface Interpolation Using Rational Bi-Cubic Spline Functions With 12 Parameters

IEEE Access, 2019
This paper discusses the constraint data interpolation or range restricted interpolation for surface data arranges on rectangular meshes that lie above or below an arbitrary plane and between two arbitrary planes by using partially blended rational bi ...
Samsul Ariffin Abdul Karim, Azizan Saaban, Vaclav Skala   +2 more
doaj   +1 more source

Beyond BMI: Unsupervised Machine Learning Clustering of Bioelectrical Impedance Phenotypes Is Associated With Weight‐Recovery Trajectories in Anorexia Nervosa

International Journal of Eating Disorders, EarlyView.
ABSTRACT Objective To identify data‐driven body composition phenotypes in patients with moderate‐to‐extreme anorexia nervosa (AN) using machine learning (ML) clustering of bioelectrical impedance analysis (BIA) parameters, and to test whether these phenotypes have specific psychopathological and childhood trauma profiles while correlating with early ...
Emanuele Cassioli, Gaia Maiolini, Eleonora D'Areglia, Livio Tarchi, Eleonora Rossi, Veronica Ceccarelli, Cristiano Dani, Luca Zompa, Chiara Ranieri, Enrico Lodovici, Anita Nannoni, Valdo Ricca, Giovanni Castellini   +12 more
wiley   +1 more source