Results 51 to 60 of about 200,895 (293)

Special bi-invariant linear connections on Lie groups and finite dimensional Poisson structures

open access: yes, 2013
Let $G$ be a connected Lie group and $\mathfrak{g}$ its Lie algebra. We denote by $\nabla^0$ the torsion free bi-invariant linear connection on $G$ given by $\nabla^0_XY=\frac12[X,Y],$ for any left invariant vector fields $X,Y$.
Benayadi, Saïd, Boucetta, Mohamed
core   +3 more sources

MAGTWIST: A Magnetically‐Driven Rotary Actuator Using a Traveling‐Wave With Integrated Stiffness Tunability

open access: yesAdvanced Functional Materials, EarlyView.
MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler   +3 more
wiley   +1 more source

Numerical tests of steel beam-to-column semi-rigid connections

open access: yesJournal of Civil Engineering and Management, 2003
This paper presents an analysis of semi-rigid beam-to-column connections in which the beam is connected to column not at 90 degrees angle. Beam-to-column bolted end-plate connections that are subjected to pure bending were modelled by three-dimensional ...
KÄ™stutis Urbonas   +1 more
doaj   +1 more source

Semi-rigid behaviour of stainless steel beam-to-column bolted connections

open access: yesSustainable Structures, 2021
Stainless steel is increasingly used in structural applications but there is still significant lack of experimental evidence on the moment-rotation (M-) behaviour of moment resisting beam-to-column connections.
Mahmud Ashraf   +2 more
doaj   +1 more source

SEISMIC ANALYSIS OF FRAMES WITH SEMI-RIGID CONNECTIONS IN ACCORDANCE WITH EC8

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2020
Up to date research has pointed out that most of the structural connections of reinforced concrete (RC) frames, particularly precast ones, behave as semi-rigid.
Dragan Zlatkov   +3 more
doaj   +1 more source

Equivalence of Systematic Linear Data Structures and Matrix Rigidity [PDF]

open access: yes, 2019
Recently, Dvir, Golovnev, and Weinstein have shown that sufficiently strong lower bounds for linear data structures would imply new bounds for rigid matrices.
Natarajan Ramamoorthy, Sivaramakrishnan   +1 more
core   +2 more sources

Integration of Low‐Voltage Nanoscale MoS2 Memristors on CMOS Microchips

open access: yesAdvanced Functional Materials, EarlyView.
This article presents the first monolithic integration of nanoscale MoS2‐based memristors into the back‐end‐of‐line of foundry‐fabricated CMOS microchips in a one‐transistor‐one‐resistor (1T1R) architecture. The MoS2‐based 1T1R cells exhibit forming‐free, nonvolatile resistive switching with ultra‐low operating voltages, low cycle‐to‐cycle variability ...
Jimin Lee   +16 more
wiley   +1 more source

Behaviour factors of MR steel frames with semi-rigid connections: a parametric study [PDF]

open access: yes, 2003
In this paper same results are presented, related to the parametric study of the q-factor of steel moment resistant frames. The study considers semi-rigid beam-to-column joints with standard behaviour, characterized by their stiffness, resistance and ...
Magalhães, Luís, Rebelo, Carlos
core  

Novel Functional Materials via 3D Printing by Vat Photopolymerization

open access: yesAdvanced Functional Materials, EarlyView.
This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov   +3 more
wiley   +1 more source

Full-range behaviour of semi-rigid steel connections [PDF]

open access: yes, 2018
The paper summarises recent research programs undertaken at the University of Sydney on determining the full-range behaviour of steel connections including post-peak softening and fracture. The overall context of this work is to produce models based on the Component Method for the moment-rotation behaviour of joints that are sufficiently simple and ...
Zhu, Chen   +4 more
openaire   +2 more sources

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