Results 91 to 100 of about 4,028,916 (205)

Multi-beam adaptive base-station antennas for cellular land mobile radio systems [PDF]

, 1989
This paper addresses the problem of meeting the proliferating demands for mobile telephony within the confinements of the limited radio spectrum allocated to these services.
Swales, SC, Edwards, DJ, Edwards, David, Beach, MA   +3 more
core   +1 more source

Bio‐Inspired Artificial Ionic Mechanoreceptor

Advanced Functional Materials, EarlyView.
A skin‐inspired artificial mechanoreceptor based on ionic interactions is presented for biomimetic tactile sensing. Pressure‐driven ionic redistribution within microfluidic channels generates a self‐powered electrical signal without external bias. The generated waveform exhibits mechanoreceptor‐like temporal features, including overshoot and undershoot,
Mohammad Akbari, Jeppe Don, Lasse A. N. Pedersen, John Noee, Rassoul Tabassian   +4 more
wiley   +1 more source

Proton beam radiotherapy in the management of uveal melanoma: clinical experience in Scotland [PDF]

, 2008
<p>Aim: To evaluate proton-beam radiotherapy (PBRT) in the management of uveal melanoma in Scotland.</p> <p>Methods: A retrospective review was undertaken on all patients receiving PBRT for uveal melanoma (1994–2005).
McConnachie, A., Alex Taylor, Alex Kacperek, Aziz, S., Samir Aziz, Kemp, E., Andrzej McConnachie, Ewan Kemp, Kacperek, A., Taylor, A.   +9 more
core   +1 more source

Indoor Localization in Commercial 5G Environment with Single BS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
As commercial 5G systems rapidly expand, indoor positioning using 5G signals holds great potential for serving a large number of users. In this paper, an effective fingerprint solution is proposed for indoor positioning with 5G signal base station by ...
Y. Dai, Y. Dai, L. Chen, L. Chen, X. Zhou, Y. Ruan, R. Chen   +6 more
doaj   +1 more source

Electrochemical Pathways for Nitrate Conversion to Ammonia: From Environmental Challenges to Ammonia Economy

Advanced Functional Materials, EarlyView.
This perspective presents recent advances in electrocatalytic nitrate reduction, focusing on reaction mechanisms, catalyst design, and electrolyzer configurations. Key challenges in selectivity, stability, and practical wastewater treatment are highlighted, while future directions for advancing sustainable ammonia synthesis and nitrate remediation are ...
Xintong Li, Yunpeng Zuo, Xiaoran Zhang, Jieqiong Shan, Kenneth Mei Yee Leung, Bin Liu, Peter Strasser, Adrian Fisher, Zonglong Zhu, Xin Wang   +9 more
wiley   +1 more source

Three-dimensional analysis of reinforced concrete beam-column structures in fire [PDF]

, 2009
This is the author's accepted manuscript. The final published article is available from the link below. Published version copyright @ 2009 ASCE.In this paper a robust nonlinear finite-element procedure is developed for three-dimensional modeling of ...
Plank, RJ, Huang, Z, Burgess, IW
core   +1 more source

Two-Layer Heuristic Information-Driven Frequency Plan Design for Multi-Gateway Multi-Beam Satellite Systems

IEEE Access
With the continuous development of multi-gateway multi-beam satellite communication technologies, the configurable frequency and beam resources in gateways and satellites are increasing rapidly. Thus, how to efficiently allocate satellite frequency bands
Longteng Yi, Zhihui Chen, Zanyang Dong, Muxin Wei, Hong Zhao, Rui Chen   +5 more
doaj   +1 more source

Load Distributing Metamaterials Via Discrete Optimization

Advanced Functional Materials, EarlyView.
Mechanical metamaterials are computationally optimized to homogenize transmitted forces by minimizing the spread of reaction forces. The resulting architectures transform localized loading into broader, more uniform force distributions and experimentally demonstrate robust load spreading under quasi‐static and impact loading.
Andrea Detry, Hannes Holey, Raja Zulkarnain, Roberto Guerra, Ilaria Papa, Michael Zaiser, Stefano Zapperi   +6 more
wiley   +1 more source

Reservoir‐Driven Neuromorphic Computing Based on Composite Rare‐Earth/Transition Metal Oxide Memristor

Advanced Functional Materials, EarlyView.
A defect‐engineered Ag/Gd2O3:Nb2O5/Pt rare earth composite oxide memristor enables stable multilevel reservoir states through pulse driven conductance modulation. Experimentally measured device responses are incorporated into a device aware reservoir computing framework for CIFAR‐100 image classification, highlighting the potential of rare earth ...
Hammad Ghazanfar, Haider Abbas, Muhammad Rabeel, Honggyun Kim, Ghulam Dastgeer, Muhammad Nasim, Furqan Zahoor, Yawar Abbas, Waqas Ahmad, Deok‐kee Kim   +9 more
wiley   +1 more source

Finite elements for modeling of localized failure in reinforced concrete [PDF]

, 2013
In this work, several beam finite element formulations are proposed for failure analysis of planar reinforced concrete beams and frames under monotonic static loading.
Jukić, Miha
core