Results 81 to 90 of about 21,157 (224)

DAB minimum current stress segmented optimal control strategy based on extended phase shift control

电力工程技术
To address the issue of low transmission efficiency in dual active bridge (DAB) converters during electric vehicle charging and discharging processes, a minimum current stress optimization control strategy combining the differential extremum method with ...
Xingguo TAN, Chaomeng LI, Gaoming FENG, Xin ZHAO, Liangliang SUN   +4 more
doaj   +1 more source

The Coupled Electronic-Ionic Monte Carlo Simulation Method [PDF]

, 2002
Quantum Monte Carlo (QMC) methods such as Variational Monte Carlo, Diffusion Monte Carlo or Path Integral Monte Carlo are the most accurate and general methods for computing total electronic energies.
B. L. Hammond Jr., B. Militzer, B. Militzer, C. Lin, C. Pierleoni, D. Hohl, D. M. Ceperley, D. M. Ceperley, D. M. Ceperley, D. M. Ceperley, D. M. Ceperley, D. M. Ceperley, D. Marx, D. Saumon, D. Saumon, D. Saumon, I. F. Silvera, J. C. Grossman, J. Kohanoff, J. Kohanoff, M. C. Payne, M. Dewing, M. E. Tuckerman, M. Sprik, N. C. Holmes, N. Metropolis, P. Diep, P. Diep, P. J. Reynolds, R. Car, V. Natoli, V. Natoli, W. J. Nellis, W. M. C. Foulkes, Y. Kwon, Y. Kwon   +35 more
core   +2 more sources

Coupled Vacancy and Phonon‐Scattering Engineering Drive Defect Evolution Toward Multifunctional High‐Performance Bi2Te3 Thermoelectrics

Advanced Science, EarlyView.
ZnSb reduces carrier concentration and suppresses Te volatilization, while Se substitution within QLs softens phonons and enhances anharmonicity. Swapped bilayers near twin boundaries strengthen phonon scattering and interlayer bonding. As a result, the optimal sample achieves an ultra‐high zT ∼1.51, cooling temperature difference of ∼70 K, power ...
Ruiheng Li, Minwen Yang, Huangshui Ma, Jie Zheng, Shengqiang Cui, Xiaobo Tan, Xuri Rao, Xiang An, Zongxiang Kan, Siqi Huo, Jing Shuai, Min Hong, Ran Ang   +12 more
wiley   +1 more source

Extragalactic jets with helical magnetic fields: relativistic MHD simulations

, 2008
Extragalactic jets are inferred to harbor dynamically important, organized magnetic fields which presumably aid in the collimation of the relativistic jet flows.
Appl, Appl, Asada, B. van der Holst, Baty, Begelman, Begelman, Bergmans, Blandford, Bodo, Bogovalov, Carvalho, Casse, Celotti, Contopoulos, del Zanna, Dulwich, F. Casse, Fendt, Georgeanopoulos, Georgeanopoulos, Ghisellini, Giroletti, Hardee, Hardee, Harris, Jester, Kellermann, Keppens, Koide, Komissarov, Komissarov, Leismann, Li, Majorama, Martí, McKinney, Meier, Meliani, Meliani, Mignone, Miller, Mizuno, O'Neill, Perucho, R. Keppens, Rawlings, Sambruna, Sambruna, Stawarz, Tavecchio, Tavecchio, Tavecchio, Tóth, van der Holst, van Putten, Vlahakis, Xu, Z. Meliani   +58 more
core   +4 more sources

Emerging Memory and Device Technologies for Hardware‐Accelerated Model Training and Inference

Advanced Electronic Materials, EarlyView.
This review investigates the suitability of various emerging memory technologies as compute‐in‐memory hardware for artificial intelligence (AI) applications. Distinct requirements for training‐ and inference‐centric computing are discussed, spanning device physics, materials, and system integration.
Yoonho Cho, Dae‐won Kim, Yujin Kim, Jung‐Heum Na, Yuwon Jeong, Dong‐Yeop Lee, Shinhyun Choi   +6 more
wiley   +1 more source

Research on Control Strategy of EMU Bidirectional Charger Based on DAB Circuit

机车电传动, 2020
In order to simplify the topology structure of the traditional EMU charger, reduce the volume and weight of the equipment and improve the safety, the DAB was applied to the EMU charger.
Bingzhang LI, Minggao ZENG, Weiwei GAN, Qingliang ZHAO, Wei GUO, Qiao HE   +5 more
doaj  

Thermotunnel refrigerator with vacuum/insulator tunnel barrier: A theoretical analysis

, 2008
The authors use two insulator layers in thermotunnel refrigerator to modify the shape of the tunneling barrier so that electrons with high kinetic energy pass it with increased probability.
Avto Tavkhelidze, Leri Tsakadze, Sommer A. H., Vasiko Svanidze, Vorobiev Y. V.   +4 more
core   +1 more source

Enhanced Lattice Polarization and Directed Charge Transport Toward Pt Surface Sites Accelerate the Volmer Step in Piezocatalytic H2 Evolution on Co‐Doped BiFeO3

Advanced Energy Materials, EarlyView.
We report a Pt‐decorated Co‐doped BiFeO3 (Pt/BCFO) piezocatalyst achieving an H2 evolution rate of 1896.4 µmol g−1 h−1. Co‐doping induces lattice distortion, enhancing piezoelectric polarization, while Pt sites promote water dissociation. Embedded in a poly(vinylidene fluoride) matrix, Pt/BCFO enables efficient mechanical energy harvesting and catalyst
Dian Zhang, Xiaowen Ruan, Lin Wang, Bin Cheng, Minghua Xu, Chunsheng Ding, Hongwei Huang, Sai Kishore Ravi   +7 more
wiley   +1 more source

Plume Characterization of a One-Millipound Solid Teflon Pulsed Plasma Thruster, Phase 2 [PDF]

Measurements of the pulsed plasma thruster (PPT) plume upstream mass flux were made in the Molecular Sink (MOLSINK) vacuum facility in order to minimize the plume-tank wall reflected mass flux.
Harstad, K. G., Jones, R. M., Pless, L. C., Rudolph, L. K.   +3 more
core   +1 more source

A Steerable and Expandable Magnetic Aspiration Catheter for Enhanced Aspiration Thrombectomy

Advanced Intelligent Systems, EarlyView.
This article presents a novel magnetic aspiration catheter (MAC) that can be both actively steered and undergo distal‐end expansion via externally applied magnetic fields. The MAC facilitates precise branch selection and enhances clot engagement by improving endovascular navigation and aspiration efficiency. Phantom experiments validate its feasibility
Hakjoon Lee, Xiao Dong, Dong‐in Kim, A. M. Masum Bulbul Chowdhury, Nader Latifi Gharamaleki, Jin‐young Kim, Sung Won Youn, Hongsoo Choi   +7 more
wiley   +1 more source