Results 81 to 90 of about 2,688,437 (267)
Cation Diffusion‐Mediated Displaced Reaction‐Transformation in Green Steelmaking
Advanced Science, EarlyView.The removal of O lattice atoms by environmental H2 at the surface of Fe3O4 results in Fe enrichment, driving the inward diffusion of Fe cations into the bulk. Through hopping between unoccupied and initially occupied sites, cation diffusion triggers a spatially displaced reaction‐transformation and drives subsequent dynamic phase transformations and ...
Guangyi Guo +7 more
wiley +1 more source
Spatial Reuse and Random Data Hopping in Multihop Ad-hoc Networks [PDF]
, 2007 Spatial reuse TDMA (time division multiple access) in multihop ad hoc network is a subject of intense research interest for next generation wireless systems. In this paper, the selection of concurrent communication pairs, that utilize the same resources,
Sinanovic, Sinan +2 more
core
Advanced Science, EarlyView.An antiferroelectric tunnel junction serves as a reservoir computing node, where field‐induced phase transitions and spontaneous ZrO2 relaxation deliver nonlinear fading memory. An In‐Ga‐Zn oxide interlayer enlarges the memory margin and multibit state richness.
Taegyu Kwon +13 more
wiley +1 more source
Design and Motion Performance Analysis of a Flexible Wheeled Hopping Robot
Jixie chuandong, 2017 In order to improve the adaptive capacity of the robot in a complex environment,solving the problems of the posture adjustments and roll and right itself of the hopping robot,a kind of flexible wheeled hopping robot which adopts flexible wheel train ...
Luo Tianhong, Jiang Haiyi, Xue Zan
doaj
Dynamic Beam Hopping Scheduling and Bandwidth Allocation Algorithms for Multi-Beam Satellite System
IEEE AccessWith the rapid advancement of satellite networks, multi-beam satellite (MBS) communication systems have emerged as a highly effective technology for delivering reliable and high-speed services.
Sungwook Kim
doaj +1 more source
Time-Hopping Multicarrier Code-Division Multiple-Access: System Outline and Performance [PDF]
, 2006 A time-hopping multicarrier code-division multiple-access (TH/MC-CDMA) scheme is proposed and investigated. In the proposed TH/MC-CDMA each information symbol is transmitted by a number of time-domain pulses with each timedomain pulse modulating a ...
Lie-liang Yang, Yang, Lie-Liang
core +1 more source
Advanced Science, EarlyView.This study employs cryogenic magneto‐terahertz nanoscopy to reveal the real‐space electrodynamics of the colossal magnetoresistance transition. By capturing the terahertz electrodynamic evolution of field‐driven spin switching, the work unveils the dissipative dynamics of emergent metallic states, providing a high‐frequency view of coupled spin‐charge ...
Samuel Haeuser +6 more
wiley +1 more source
, 2007 This paper investigates and compares the performance of various ultrawide bandwidth (UWB) systems when communicating over Nakagami-m fading channels. Specifically, the direct-sequence (DS), time-hopping (TH) and hybrid direct-sequence time-hopping (DS-TH)
Yang, Lie-Liang, Ahmed, Qasim Zeeshan
core +1 more source
Digital Communications and NetworksIn this paper, a joint beam pattern scheduling and resource allocation design is proposed for multi-satellite Beam Hopping (BH) systems, which optimizes inter-satellite load balancing, beam pattern scheduling and multi-domain resource allocation under ...
Zhuang Yao +5 more
doaj +1 more source
Phase‐Dependent Oxygen Defect Energetics in Epitaxial NbN/AlN/NbN Films
Advanced Science, EarlyView.Phase dependent oxygen defect energetics in epitaxial δ‐NbN/AlN/δ‐NbN and β‐Nb2N/AlN/β‐Nb2N trilayers. Atomic‐scale analysis and first‐principles calculations reveal distinct oxygen incorporation pathways across NbN polymorphs. Layer resolved defect formation energies show that O is energetically more favorable within δ‐NbN electrodes, whereas in β ...
Prachi Garg +10 more
wiley +1 more source