Results 61 to 70 of about 12,020,063 (274)

Design and Manufacturing of The Device of Immediate Three Dimensional Report to Measure The mechanical force of The hook Punch [PDF]

Assiut Journal of Sport Science and Arts, 2016
Is it possible to measure the three elements of the mechanical power of the hook punch in the light of the engineered design? Is it possible to capture the electric signal wirelessly and convert it to legible digital values?
KhaledAbd- Elazeem
doaj   +1 more source

Concentration of the distance between points in the unit ball [PDF]

, 1998
We prove that in every finite dimensional normed space, for “most” pairs (x, y) of points in the unit ball, ║x − y║ is more than √2(1 − ε). As a consequence, we obtain a result proved by Bourgain, using QS-decomposition, that guarantees an exponentially ...
Villa, R, Ball, KM
core  

Functionalizing Micro‐to‐Mesoscopic Electrode Architectures for Regulating Electron Transfer Behaviors in Electrocatalysis

Advanced Functional Materials, EarlyView.
A systematic review is conducted to assess the influence of electrode architecture across micro‐ to mesoscopic length scales on electron‐transfer pathways in electrocatalysis. We discuss the structure‐activity relationships in electrocatalytic applications, including resource recovery and environmental remediation, and provide cost‐effective, efficient
Manshu Zhao, Jiaojiao Zhang, Shideng Yuan, Xinmeng Yu, Keming Wan, Xiaoguang Duan, Zhining Wang   +6 more
wiley   +1 more source

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source

Second-order dynamical system to solve the sum of monotone operators via the KM algorithm

Alexandria Engineering Journal
Dynamical systems serve as powerful tools for studying optimization and fixed-point algorithms. Motivated by this perspective, we take a problem to find solution of the form 0∈A(y)+B(y) in Hilbert spaces using a dynamical system approach based on the ...
Yang Cao, Vajahat Karim Khan, Mohd. Sarfaraz, Adnène Arbi, Md. Kalimuddin Ahmad   +4 more
doaj   +1 more source

Amphoteric Cu‐Doping Leading to High Thermoelectric Performance in p‐Type Bismuth Antimony Telluride

Advanced Functional Materials, EarlyView.
This study shows that Cu plays two opposite roles in p‐type Bi0.5Sb1.5Te3 depending on the processing route. Under thermodynamic‐equilibrium bulk‐synthesis, Cu mainly occupies cation sites, increases hole concentration, preserves mobility, and slightly reduces lattice heat transport. The best‐performing composition among the investigated series reaches
Moritz Thiem, Zhiyuan Li, Minsu Heo, Fangyi Hu, Tian Lan, Youngdeog Koh, Ruiwen Xie, Chuanmu Tian, Marc Widenmeyer, Hyun‐Sik Kim, Jan P. Hofmann, Yuan Yu, Hongbin Zhang, Anke Weidenkaff, G. Jeffrey Snyder, Wenjie Xie   +15 more
wiley   +1 more source

Research on Boundary Layer Effect in Fractured Reservoirs Based on Pore-Scale Models

Frontiers in Earth Science, 2021
It is of great significance to study the seepage characteristics of heavy oil reservoirs, which are conducive to the efficient development of resources.
Deqiang Wang, Deqiang Wang, Xiansong Zhang, Xiansong Zhang, Jian Zhang, Jian Zhang   +5 more
doaj   +1 more source

Atom–Cluster Synergy in Scalable Fe–Ru Dual‐Site Architectures Accelerates Alkaline Hydrogen Evolution

Advanced Materials, EarlyView.
A mechanochemically synthesized dual‐site electrocatalyst (RuNC@Fe1NC) accelerates alkaline hydrogen evolution via atomic‐level spatial decoupling. Oxophilic Fe single atoms effectively dissociate water, while adjacent Ru nanoclusters rapidly recombine hydrogen.
Jae‐Hoon Baek, Seong Hyeon Kweon, Sun Gwan Cha, Se Jung Lee, Jinwoo Baek, Dong Hyeok Kwon, Hojeong Lee, Youngkook Kwon, Sang Kyu Kwak, Jong‐Beom Baek   +9 more
wiley   +1 more source

Impact Sound Reduction Performances of Additional Floor Mats for the Retrofitting of an Existing Apartment Building in Accordance with Test-Bed Conditions

Applied Sciences
Floor mats are commonly used to improve the impact sound performance of existing homes, but actual impact sound reductions do not consistently appear, as they depend on the test-bed conditions used to determine impact sound performance.
Yong-Hee Kim, Soon-Seong Moon, Jun-Oh Yeon   +2 more
doaj   +1 more source

Provable non-accelerations of the heavy-ball method

Mathematical Programming
In this work, we show that the heavy-ball ($\HB$) method provably does not reach an accelerated convergence rate on smooth strongly convex problems. More specifically, we show that for any condition number and any choice of algorithmic parameters, either the worst-case convergence rate of $\HB$ on the class of $L$-smooth and $μ$-strongly convex \textit{
Goujaud, Baptiste, Taylor, Adrien, Dieuleveut, Aymeric   +2 more
openaire   +2 more sources