Results 71 to 80 of about 92,538 (262)

Effects of mechanical properties and geometric conditions on stiffness of Hyperboloid Shallow Shell

open access: yesMATEC Web of Conferences, 2015
The experiment models based on the hyperboloid shallow shells that represent automobile panel's surface features are established. The effects of material properties and geometric conditions condition on the stiffness of hyperboloid shallow shell are ...
Zhao Lihong   +3 more
doaj   +1 more source

Ridge-Valley-Guided Sketch-Drawing From Point Clouds

open access: yesIEEE Access, 2018
Sketch-drawing is one of the simplest and most direct means to illustrate 3-D objects. It can not only present geometric features, but also greatly facilitate us to identify and understand the object.
Yinghui Wang   +8 more
doaj   +1 more source

Geometric Thickness of Multigraphs is existsR-complete

open access: yes, 2023
We say that a (multi)graph G=(V,E) has geometric thickness t if there exists a straight-line drawing φ:V→R2 and a t-coloring of its edges where no two edges sharing a point in their relative interior have the same color. The \textsc{Geometric Thickness} problem asks whether a given multigraph has geometric thickness at most t. This problem was shown to
Förster, Henry   +5 more
openaire   +1 more source

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

open access: yesAdvanced 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   +3 more
wiley   +1 more source

Effect Analysis of Geometric Parameters on Stainless Steel Stamping Multistage Pump by Experimental Test and Numerical Calculation

open access: yesAdvances in Mechanical Engineering, 2013
In order to improve the efficiency of stainless steel stamping multistage pump, quadratic regression orthogonal test, hydraulic design, and computational fluid dynamics (CFD) are used to analyze the effect of pump geometric parameters.
Chuan Wang   +3 more
doaj   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

open access: yesAdvanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies   +2 more
wiley   +1 more source

Study and characterization of morphogeometric parameters to assist diagnosis of keratoconus

open access: yesBioMedical Engineering OnLine, 2018
Background In case of significant imperfections on the cornea, data acquisition is difficult and a significant level of missing data could require the interpolation of important areas of the cornea, resulting in a very ambiguous model. The development of
Francisco Cavas-Martínez   +5 more
doaj   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

open access: yesAdvanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch   +3 more
wiley   +1 more source

A TECHNIQUE OF MULTIDETECTOR COMPUTED TOMOGRAPHY FOR OPTIC CEREBRAL OXYMETRY

open access: yesAlʹmanah Kliničeskoj Mediciny, 2016
Aim: To assess geometric parameters of the human head based on X-ray computed tomography for construction of the first Russian optical cerebral oxymeter.Materials and methods: Based on the data obtained by multidetector computed tomography, we ...
A. P. Tarasov   +6 more
doaj   +1 more source

Multimodal Data‐Driven Microstructure Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang   +4 more
wiley   +1 more source

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