Results 1 to 10 of about 94,173 (254)

Umbilic and Tangential Singularities on Configurations of Principal Curvature Lines [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2002
In this paper is studied the relationship between quadratic tangencies of principal lines with the boundary of a surface and the Darbouxian umbilics of a smooth boundaryless surface which approximates it through the process of thickening and smoothing ...
RONALDO GARCIA, JORGE SOTOMAYOR
doaj   +5 more sources

Rehabilitation of the Severely Atrophic Maxilla with Subperiosteal Implants: A Biomechanical and Decision Analysis of Material and Configuration Choices [PDF]

open access: yesBiomimetics
Background/Objectives: Patient-specific subperiosteal implants are increasingly used to treat severely atrophic ridges due to advances in digital planning and additive manufacturing.
Barış Erkut Türk   +3 more
doaj   +2 more sources

Reduction of inappropriate principal features of the switched reluctance motor using sinusoidal rotor configuration

open access: yesIET Electric Power Applications, 2023
This paper presents a comprehensive analysis, electromagnetic evaluation, and prototyping of a novel motor structure called the sinusoidal rotor switched reluctance motor.
Hossein Torkaman, Alireza Sohrabzadeh
doaj   +2 more sources

Adaptive Motion Segmentation Algorithm Based on the Principal Angles Configuration [PDF]

open access: yesLecture Notes in Computer Science, 2011
Many motion segmentation algorithms based on manifold clustering rely on a accurate rank estimation of the trajectory matrix and on a meaningful affinity measure between the estimated manifolds. While it is known that rank estimation is a difficult task, we also point out the problems that can be induced by an affinity measure that neglects the ...
J Salvi, Xavier Lladó
exaly   +2 more sources

Challenge in Arrokoth’s Single Merger to Achieve the Shape’s Principal Axis Configuration

open access: yesThe Planetary Science Journal
The cold-classical Kuiper Belt Object 486958 Arrokoth is a contact binary composed of two flattened lobes, Weeyo and Wenu, closely aligned along their principal axes, despite each lobe having a highly irregular shape.
Ketan Kamat   +2 more
doaj   +3 more sources

Absolute configuration at C-24 of 5 beta-ranol, a principal bile alcohol of the bullfrog.

open access: yesJournal of Lipid Research, 1988
The stereochemistry of the hydroxyl group at C-24 in 5 beta-ranol (27-nor-5 beta-cholestane-3 alpha,7 alpha,12 alpha,24,26-pentol) a principal bile alcohol of the bullfrog which is structurally related to the major human urinary bile alcohol, 27-nor-5 ...
K Kihira   +6 more
doaj   +3 more sources

Eigenposes: Using principal components to describe body configuration for analysis of postural control dynamics

open access: yesThe 2010 International Joint Conference on Neural Networks (IJCNN), 2010
Many studies of human postural control use data from video-captured discrete marker locations to analyze via complex inverse kinematic reconstruction the postural responses to a perturbation. We propose here that Principal Component Analysis of this marker data provides a simpler way to get an overview of postural perturbation responses. Using short (1,
Erik Bollt   +2 more
exaly   +2 more sources

Calculations of the principal neutronic characteristics of a hypothetical VVER assembly with minor actinides incorporated into PuO2-ThO2 fuel in a duplex configuration [PDF]

open access: yesNuclear Energy and Technology
The VVER-1200/AES-2006 is recognized as a leading Gen III+ nuclear reactor design, meeting stringent international safety standards. This study evaluates the use of a novel PuO2-ThO2 duplex fuel, incorporating weapon-grade plutonium (WgPu) and thorium ...
Achraf Radi   +2 more
doaj   +5 more sources

Numerical Modelling of Chamfer Billet of High Carbon Steel During Continuous Casting [PDF]

open access: yesArchives of Metallurgy and Materials, 2022
The formation of internal cracks in as-cast billet is mainly attributed to the stress and strain states near the solidifying front. This study investigates the effect of chamfer configuration of as-cast billet on the maximal principal stress and the ...
Nanfu Zong   +4 more
doaj   +1 more source

Shaping the leadership configuration of principals and vice-principals: The principal socialising agent

open access: yesEducational Management Administration & Leadership, 2022
This article examines how principals socially construct the leadership configuration of principals and vice-principals in Singapore and what factors influenced the principal's shaping of this configuration. The qualitative study, involving the interview of 10 principals, sought to understand how principals made sense of their vice-principals roles vis ...
Jeanne Ho, Trivina Kang
openaire   +2 more sources

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