Results 71 to 80 of about 3,432,936 (199)

Zero-electric-power position retaining utilizing hysteresis on an antagonistic shape memory alloy system

open access: yesNihon Kikai Gakkai ronbunshu, 2018
Shape Memory Alloy (SMA) actuators must be continued to be heated generally to retain a shape of a smart structure deformed by the SMA actuators. To save the energy applying to the smart structure, a new control method was proposed utilizing the fact ...
Tadashige IKEDA   +3 more
doaj   +1 more source

Analytical solution of a model for complex food webs [PDF]

open access: yes, 2002
We investigate numerically and analytically a recently proposed model for food webs [Nature {\bf 404}, 180 (2000)] in the limit of large web sizes and sparse interaction matrices.
D. J. Watts   +20 more
core   +3 more sources

Analytical model for flux saturation in sediment transport

open access: yes, 2014
The transport of sediment by a fluid along the surface is responsible for dune formation, dust entrainment and for a rich diversity of patterns on the bottom of oceans, rivers, and planetary surfaces.
Herrmann, Hans J.   +3 more
core   +1 more source

An energy-consistent depth-averaged Euler system: derivation and properties [PDF]

open access: yes, 2014
In this paper, we present an original derivation process of a non-hydrostatic shallow water-type model which aims at approximating the incompressible Euler and Navier-Stokes systems with free surface. The closure relations are obtained by aminimal energy
Bristeau, Marie-Odile   +3 more
core   +6 more sources

Principles of research of soil ped deformation at interaction with machine working element

open access: yesСельскохозяйственные машины и технологии, 2016
Working elements of machines constantly or pulsewise interact with some of objects in raw materials with a difficult configuration (a root or tuber crops, vegetables, fruit, grain, soil peds) when performing technological operations in agricultural ...
V. I. Kravchuk, V. P. Davydyuk
doaj  

A practical analytic model for daylight

open access: yesProceedings of the 26th annual conference on Computer graphics and interactive techniques - SIGGRAPH '99, 1999
Sunlight and skylight are rarely rendered correctly in computer graphics. A major reason for this is high computational expense. Another is that precise atmospheric data is rarely available. We present an inexpensive analytic model that approximates full spectrum daylight for various atmospheric conditions.
A. J. Preetham   +2 more
openaire   +1 more source

Analytical model tracing deformations in multistorey large timber panel building

open access: yesJournal of Civil Engineering and Management, 2019
This paper deals with the deformation characteristics of wood-framed residential, small commercial and hotel buildings with sheathing. Recent building structures are based on large panel or modular technology, where elements in the form of diaphragms or ...
Jaroslaw Malesza   +2 more
doaj   +1 more source

Note Clarifying the Paper, “Charge Sheet Super Junction in 4H-Silicon Carbide: Practicability, Modeling and Design”

open access: yesIEEE Journal of the Electron Devices Society, 2020
This note clarifies an important approximation used to simulate the breakdown field in the SiO2 liner of a SiC Charge-Sheet Superjunction - a new power device structure - reported by Akshay and Karmalkar (2020).
K. Akshay, Shreepad Karmalkar
doaj   +1 more source

Analytical solution of a generalized Penna model

open access: yes, 2004
In 1995 T.J.Penna introduced a simple model of biological aging. A modified Penna model has been demonstrated to exhibit behaviour of real-life systems including catastrophic senescence in salmon and a mortality plateau at advanced ages.
B. Charlesworth   +16 more
core   +1 more source

Analytical Study on the Breakdown Characteristics of Si-Substrated AlGaN/GaN HEMTs With Field Plates

open access: yesIEEE Journal of the Electron Devices Society, 2020
The breakdown voltage model of Si-substrated AlGaN/GaN HEMTs with gate and drain field plates is proposed in this work. The silicon substrate and GaN buffer are considered as the depletion region in the modeling process.
Jianhua Liu   +6 more
doaj   +1 more source

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