Results 71 to 80 of about 5,309,525 (360)
Elastic Energy Storage in Biological Materials: Internal Stresses and Their Functionality
Advanced Materials, EarlyView.Harnessing and storing internally generated elastic energy is a clever strategy by biological materials to perform functions like shape transformation, movement, and predation. This review explores how biological systems manipulate mechanisms like atomic or protein integration into minerals, protein conformational shifts, phase transitions, and osmotic
Shahrouz Amini +3 more
wiley +1 more source
ϵ-Henig Saddle Points and Duality of Set-Valued Optimization Problems in Real Linear Spaces
The Scientific World Journal, 2013 We study ϵ-Henig saddle points and duality of set-valued optimization problems in the setting of real linear spaces. Firstly, an equivalent characterization of ϵ-Henig saddle point of the Lagrangian set-valued map is obtained.
Zhi-Ang Zhou
doaj +1 more source
Evaluating the partition function for systems with long range interactions
, 1999 We express the partition function for an equilibrium system of interacting particles in the canonical ensemble as a functional integration over the particles' density field.
Zhou, Tong
core +1 more source
Observation of Topological Chirality Switching Induced Freezing of a Skyrmion Crystal
Advanced Materials, EarlyView.Using Lorentz Transmission electron microscopy, it is shown that in the insulating van der Waals ferromagnet, CrBr3, a magnetic field can cause Bloch skyrmionic bubbles to spontaneously switch their chirality. As achiral type‐II bubbles are an intermediate state, the bubbles rapidly elongate and shrink when switching, thereby inducing a freezing of the
John Fullerton +10 more
wiley +1 more source
Inflation and reheating predictions in polynomial inflation with small and large fields
Physics Letters BWe explore the inflationary dynamics and reheating predictions of the fourth-order generalized polynomial inflation model featuring adjustable saddle-point position and flatness near the saddle point for both small and large field cases, based on the ...
Feng-Yi Zhang, Wenbin Lin
doaj +1 more source
Accelerated variance-reduced methods for saddle-point problems
EURO Journal on Computational Optimization, 2022 We consider composite minimax optimization problems where the goal is to find a saddle-point of a large sum of non-bilinear objective functions augmented by simple composite regularizers for the primal and dual variables.
Ekaterina Borodich +5 more
doaj +1 more source
Convergence of approximate saddle points
Journal of Mathematical Analysis and Applications, 1989 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +3 more sources
Advanced Optical Materials, EarlyView.This work addresses a common issue in many double perovskites: their weak luminescence. Using the example of promising infrared‐bandgap mixed‐valence gold halide double perovskites, it demonstrates strong polar electron‐phonon coupling. Temperature‐dependent spectroscopy reveals that bright polarons are favored at low temperature, while a dark low ...
Ange B. Chambissie Kameni +8 more
wiley +1 more source
Some Preconditioning Techniques for Saddle Point Problems [PDF]
, 2006 Saddle point problems arise frequently in many applications in science and engineering, including constrained optimization, mixed finite element formulations of partial differential equations, circuit analysis, and so forth.
Benzi, Michele, Wathen, A. J.
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Excitonic Anisotropy in Single‐Crystalline 2D Silver Phenylchalcogenides
Advanced Optical Materials, EarlyView.Using a combination of ab initio theory and optical micro‐spectroscopy, in‐plane anisotropy of multiple delocalized excitons in 2D silver phenylchalcogenides (AgEPh; E = S, Se, Te) is predicted and characterized. Cryogenic reflectance micro‐spectroscopy further reveals the fine structure of excitonic bands in AgSePh.
Woo Seok Lee +9 more
wiley +1 more source