Results 21 to 30 of about 10,111,763 (293)

An approach to nonlinear viscoelasticity via metric gradient flows [PDF]

open access: yes, 2013
We formulate quasistatic nonlinear finite-strain viscoelasticity of rate type as a gradient system. Our focus is on nonlinear dissipation functionals and distances that are related to metrics on weak diffeomorphisms and that ensure time-dependent frame ...
Mielke, A.   +4 more
core   +1 more source

Evaluation of development potential and application prospect of geothermal resources: A case study of Xiangfu District in Kaifeng [PDF]

open access: yesYouqicang pingjia yu kaifa
With the growing global demand for clean energy, geothermal resources as a renewable energy source have attracted widespread attention. This study evaluated the geothermal resource development potential and application prospects in the Xiangfu District ...
SUN Guanyu, BAI Zongxian, LI Hongda, WANG Yufei, BAI Zonghan, GAO Huijie, ZHU Zhimin, HUANG Zheng, MA Yingliang, WANG Liangliang
doaj   +3 more sources

Dynamic propagation of an Airy beam in metasurface-enabled gradiently-aligned liquid crystals

open access: yesNanophotonics, 2023
Due to the unique self-acceleration, self-healing, and non-diffraction properties, Airy beams have been explored extensively and found applications in various fields.
Gao Meini   +10 more
doaj   +1 more source

Effects of electrode materials and potential gradient on electro-osmotic consolidation for marine clayey soils

open access: yesFrontiers in Earth Science
This study conducted experimental investigations into the effects of electrode material and potential gradient on the effectiveness of electro-osmotic consolidation (EO) in strengthening soft soils.
Haihui Jin   +6 more
doaj   +1 more source

Peculiarities in water use and supply of differentecological plant groups

open access: yesБюллетень Почвенного института им. В.В. Докучаева, 2016
Every ecological group of plants including hygrophytes, mesophytes and xerophytes is characterized by a definite narrow interval of the soil water potential, in which the values of relative transpiration cannot be lower than the optimal level (1.0-0.9 ...
N. A. Muromtsev   +2 more
doaj   +1 more source

Analysis of structure evolution and development mechanism of a Central-Asian cyclone moving northward

open access: yes暴雨灾害, 2023
Central-Asian cyclone is one of the major synoptic systems that causes disastrous weather such as heavy rain, snowstorm, strong wind, and sand dust in Xinjiang.
Xin ZHANG, Qiufen XIONG, Xiaofei JIANG
doaj   +1 more source

Materials in thermodynamic potential gradients [PDF]

open access: yesPure and Applied Chemistry, 2003
Abstract In materials that are exposed to thermodynamic potential gradients (i.e., gradients of chemical potentials, electrical potential, temperature, or pressure), transport processes of the mobile components occur. These transport processes and the coupling between different processes are not only of fundamental interest, but are also
openaire   +1 more source

Nano-Gradient Materials Prepared by Rotary Swaging

open access: yesNanomaterials, 2021
Gradient nanostructured metallic materials with a nanostructured surface layer show immense potential for various industrial applications because of their outstanding mechanical, fatigue, corrosion, tribological properties, etc.
Qingzhong Mao   +3 more
doaj   +1 more source

Nonlinear cross Gramians and gradient systems [PDF]

open access: yes, 2007
We study the notion of cross Gramians for non-linear gradient systems, using the characterization in terms of prolongation and gradient extension associated to the system.
Jacquelien M. A. Scherpen   +5 more
core   +2 more sources

Potential-Function Proofs for Gradient Methods.

open access: yesTheory Comput., 2019
This note discusses proofs of convergence for gradient methods (also called “first-order methods”) based on simple potential-function arguments. We cover methods like gradient descent (for both smooth and non-smooth settings), mirror descent, and some accelerated variants.
Nikhil Bansal 0001, Anupam Gupta 0001
openaire   +1 more source

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