Results 131 to 140 of about 22,009 (301)

A Distributed Dynamic Channel Assignment Algorithm in Highway Microcells [PDF]

, 1996
A distributed dynamic channel assignment is proposed and its performance is examined in a highway microcellular radio environment. In the two step ordered local packing (TOLP) scheme, channels are assigned on an ordered basis under cochannel utilization ...
이채영, 박현정
core  

A Hybrid Graph-Coloring and Metaheuristic Framework for Resource Allocation in Dynamic E-Health Wireless Sensor Networks

Eng
Wireless sensor networks (WSNs) are a key enabling technology for modern e-Health applications. However, their deployment in clinical environments faces critical challenges due to dynamic network topologies, signal interference, and stringent energy ...
Edmond Hajrizi, Besnik Qehaja, Galia Marinova, Klodian Dhoska, Lirianë Berisha   +4 more
doaj   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Analisis Alokasi Kanal Dengan Menggunakan Skema Distributed Dynamic Channel Assignment Pada Mikrosel CDMA2000-1x [PDF]

, 2010
ABSTRAKSI: Alokasi frekuensi pada jaringan wireless yang terbatas membutuhkan teknik alokasi kanal yang efektif dan efesien. Salah satu teknik pengalokasian kanal pada mikro sel CDMA2000-1x yang dapat digunakan yaitu Dynamic Channel Assignment (DCA ...
I WAYAN YOGIYANA
core  

DCW-YOLO: Road Object Detection Algorithms for Autonomous Driving

IEEE Access
Aiming at the problems of multiple parameters and poor detection accuracy of object detection network in automatic driving scenarios, an object detection algorithm based on improved YOLOv8 is proposed. First, a dynamic head framework is used to unify the
Hongge Ren, Fangke Jing, Song Li
doaj   +1 more source

Support‐Controlled Reaction Pathways via Dynamic Sulfur‐Mediated Interfaces for Selective Urea Electrolysis

Advanced Functional Materials, EarlyView.
Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler, Lucía Vizcaíno‐Anaya, Ahmad Tayyebi, José Manuel Vila‐Fungueiriño, María del Carmen Giménez‐López   +4 more
wiley   +1 more source

Performance Evaluation and Comparison of Different Distributed Measurement-Based Algorithms for Dynamic Channel Assignment in Personal Communications [PDF]

, 1995
Although they perform well in the conventional cellular systems, the centralized predication-based channel assignment methodologies, whether fixed or dynamic, can no longer be applicable in the emerging personal communications environments.
Chuang, Justin, Cheng, Matthew
core  

Optimizing UAV Location for Deployment in Cell-Free Massive MIMO Networks Using a Soft Actor-Critic Reinforcement Learning

IEEE Access
The uncrewed aerial vehicles (UAVs) communication network has recently garnered significant attention and motivation in academic and industrial research due to its flexible mobility concept in providing dynamic coverage in hotspot or congested areas with
Okello Kenneth, Elijah Mwangi, Dominic Bernard Onyango Konditi   +2 more
doaj   +1 more source

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

Synthesis of AgBiS2 and AgInS2 Based on Formation Energies in Sulfur‐Rich Reducing Flame

Advanced Functional Materials, EarlyView.
High‐surface‐area AgInS2 and AgBiS2 nanoparticles were synthesized via enclosed flame spray pyrolysis by tuning flame conditions and formation energies to guide phase formation. Flame parameters were tuned to suppress oxides and enable pure sulfide phase growth.
Muhammad Ali Martuza, Marco Schowalter, Andreas Rosenauer, Olga V. Kuharenko, Christian Rossner, Johannes Birkenstock, Lutz Mädler, Suman Pokhrel   +7 more
wiley   +1 more source