Results 91 to 100 of about 51,215 (304)

From Folding Mechanics to Robotic Function: A Unified Modeling Framework for Compliant Origami

open access: yesAdvanced Science, EarlyView.
A geometry‐consistent DDG framework captures compliant origami deformation from rigid‐like folding to soft panel bending. By tuning crease and panel stiffness, bistable snap‐through responses transform into smooth monostable deformation, enabling programmable stability and robot‐scale locomotion.
Bohan Zhang   +7 more
wiley   +1 more source

Adaptive wavelet methods for saddle point problems [PDF]

open access: yes, 1999
Recently, adaptive wavelet strategies for symmetric, positive definite operators have been introduced that were proven to converge. This paper is devoted to the generalization to saddle point problems which are also symmetric, but indefinite. Firstly, we
Aachen Technische Hochschule (Germany). Inst. fuer Geometrie und Praktische Mathematik   +3 more
core   +4 more sources

saddle point

open access: yes, 2019
Citation: 'saddle point' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.S05446 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Wake‐Up and Fatigue under Electrical Cycling in HfO2‐Based Ferroelectrics: Mechanisms and Strategies toward Reliable Devices

open access: yesAdvanced Science, EarlyView.
HfO2‐based ferroelectrics exhibit wake‐up and fatigue behaviors during electrical cycling, significantly affecting device endurance and reliability. These phenomena are governed by defect dynamics, including oxygen vacancy redistribution and charge trapping.
Hongseok Kim   +6 more
wiley   +1 more source

Accelerated Saddle Point Refinement Through Full Exploitation of Partial Hessian Diagonalization [PDF]

open access: yes, 2019
Identification and refinement of first order saddle point (FOSP) structures on the potential energy surface (PES) of chemical systems is a computational bottleneck in the characterization of reaction pathways.
Khachik, Sargsyan   +3 more
core   +1 more source

Saddle-point method for resummed form factors in QCD

open access: yesEuropean Physical Journal C: Particles and Fields
We consider the form factor appearing in QCD resummation formalism for event-shape distributions in the two-jet (or back-to-back) region. We present an analytic formula for the inverse transform of the form factor, namely from the conjugate moment space ...
Ugo Giuseppe Aglietti   +2 more
doaj   +1 more source

Phonon‐Driven Tetrahedral Tilts Enable Ultralow Bulk Thermal Expansion and Interstitial Oxide‐Ion Migration in Phenacite Solid Electrolytes

open access: yesAdvanced Science, EarlyView.
This work demonstrates a design paradigm of phonon‐driven negative‐thermal‐expansion (NTE) flexible framework that exploits the intrinsic lattice flexibility of NTE frameworks to simultaneously suppress thermal expansion and activate oxide‐ion conduction, offering a promising strategy to mitigate TEC mismatch in solid‐state ionic devices.
Xiaohui Li   +10 more
wiley   +1 more source

Saddle point avoidance due to inhomogeneous friction [PDF]

open access: yes, 1998
The saddle point avoidance due to a position dependent friction is examined in a bidimensional model which can be solved numerically. Both the analysis of the kinetic flux and the covariant representation of the Fokker-Planck equation lead to a scalar ...
CARDIN, FRANCO, MORO, GIORGIO
core   +1 more source

Breaking the Durability–Power Trade‐Off: Boron‐Directed Faceted O3 Cathodes for High‐Rate Sodium‐Ion Batteries

open access: yesAdvanced Energy Materials, EarlyView.
Boron‐oxide‐assisted particle engineering stabilizes O3‐type layered cathodes for sodium‐ion batteries by mitigating phase transitions and lattice strain. Acting as flux and structural modifier, boron forms submicron hexagonal platelets with (003) facets and expanded Na‐layer spacing, enabling rapid Na⁺ diffusion and mechanical resilience.
Tengfei Song   +9 more
wiley   +1 more source

Current Status Of The Saddle-Point Model [PDF]

open access: yes, 1996
The saddle-point model of ionizing ion-atom collisions is based on the idea that when a charged projectile ionizes target electrons. some of the ejected electrons find themselves on the transient, moving saddle-point of Coulomb potential with a velocity ...
Gay, Timothy J.
core   +1 more source

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