Results 21 to 30 of about 735,574 (312)

Nonlinear Analysis and Performance of Electret-Based Microcantilever Energy Harvesters

open access: yesEnergies, 2019
An energy harvester composed of a microcantilever beam with a tip mass and a fixed electrode covered with an electret layer is investigated when subject to an external harmonic base excitation.
Bashar Hammad   +3 more
doaj   +1 more source

DEVELOPMENT OF HYDRAULIC PULL- METER TO COMPATIBLE WITH MONOTERING DATA INSTRUMENT [PDF]

open access: yesJournal of Soil Sciences and Agricultural Engineering, 2014
The hydraulic pull-meter and strain pull-meter are normally used to test tractors and agricultural machines. Each one has advantage and disadvantage. Data obtained from the hydraulic pull-meter is steady and is recorded manually from its dial. So, at the
M. M. Metwalli   +3 more
doaj   +1 more source

Modeling a Pull-In Instability in Micro-Machined Hybrid Contactless Suspension

open access: yesActuators, 2018
A micro-machined hybrid contactless suspension, in which a conductive proof mass is inductively levitated within an electrostatic field, is studied.
Kirill V. Poletkin, Jan G. Korvink
doaj   +1 more source

Golden oldies: ten crystallography articles that we think must be read

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2023
We have selected a set of ten `golden oldies', diverse crystallography articles to illustrate important moments in the development of our field of science and which form landmark papers in crystallography.
Chiara Massera, John R. Helliwell
doaj   +1 more source

Pull in and Push Out: Mechanisms of Horizontal Gene Transfer in Bacteria

open access: yesFrontiers in Microbiology, 2018
Horizontal gene transfer (HGT) plays an important role in bacterial evolution. It is well accepted that DNA is pulled/pushed into recipient cells by conserved membrane-associated DNA transport systems, which allow the entry of only single-stranded DNA ...
Dongchang Sun
semanticscholar   +1 more source

On the application of Sturm's theorem to analysis of dynamic pull-in for a graphene-based MEMS model

open access: yesApplied and Computational Mechanics, 2018
A novel procedure based on the Sturm’s theorem for real-valued polynomials is developed to predict and identify periodic and non-periodic solutions for a graphene-based MEMS lumped parameter model with general initial conditions.
Omarov D.   +3 more
doaj   +1 more source

Push–Pull Gradient Methods for Distributed Optimization in Networks [PDF]

open access: yesIEEE Transactions on Automatic Control, 2018
In this article, we focus on solving a distributed convex optimization problem in a network, where each agent has its own convex cost function and the goal is to minimize the sum of the agents’ cost functions while obeying the network connectivity ...
Shi Pu, Wei Shi, Jinming Xu, A. Nedić
semanticscholar   +1 more source

Behavior of Pull-Out and Movement Mechanisms of High-Performance Plain Weave Fabric Yarns

open access: yesShanghai Jiaotong Daxue xuebao, 2022
In order to study the movement mechanisms of plain weave fabric yarns, the numerical simulation of behavior of yarn pull-out and movement under various loading conditions was carried out on a typical plain-woven fabric.
CHEN Jianwen, WU Shanxiang, ZHANG Ruonan, CHEN Wujun, FAN Jin, WANG Mingyang
doaj   +1 more source

Review on the Modeling of Electrostatic MEMS

open access: yesSensors, 2010
Electrostatic-driven microelectromechanical systems devices, in most cases, consist of couplings of such energy domains as electromechanics, optical electricity, thermoelectricity, and electromagnetism.
Wan-Chun Chuang   +3 more
doaj   +1 more source

Push and Pull Search for Solving Constrained Multi-objective Optimization Problems [PDF]

open access: yesSwarm and Evolutionary Computation, 2017
This paper proposes a push and pull search (PPS) framework for solving constrained multi-objective optimization problems (CMOPs). To be more specific, the proposed PPS divides the search process into two different stages, including the push and pull ...
Zhun Fan   +7 more
semanticscholar   +1 more source

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