Results 41 to 50 of about 9,673 (291)

Low‐Profile, High‐Gain GRIN RF Lenses via Multi‐Material Vat Photopolymerization

open access: yesAdvanced Functional Materials, EarlyView.
We investigate the opportunity of leveraging multi‐material vat photopolymerization printing to manufacture intricate lenses exhibiting permittivity gradients that can increase signal gain in transmitted radiofrequency signals in the X‐ and Ku‐bands. Lenses produced with more distinct low‐loss materials (up to 5) can deliver an 18 dB signal gain with a
Lawrence Romangsuriat   +3 more
wiley   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

open access: yesAdvanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong   +12 more
wiley   +1 more source

HUBUNGAN KONEKSI WIRELESS FIDELITY (WiFi) DENGAN MINAT MAHASISWA DALAM MEMANFAATKAN PERPUSTAKAAN PUSAT ITB

open access: yesEdulib: Journal of Library and Information Science, 2013
Penelitian ini bertujuan untuk mengetahui hubungan ketersediaan koneksi wifi dengan minat mahasiswa dalam memanfaatkan Perpustakaan Pusat ITB. Adapun secara khusus tujuan penelitian ini adalah 1) Untuk mengetahui hubungan ketersediaan koneksi wifi dengan
Dila Farida Nurfajriah, Miyarso Dwi Ajie
doaj   +1 more source

An Adaptive Handover Scheme for Hybrid LiFi and WiFi Networks

open access: yesIEEE Access, 2022
The hybrid light fidelity (LiFi) and wireless fidelity (WiFi) network (HLWNet) is considered to be a potential component of the next generation indoor wireless networks.
Guanghui Ma   +2 more
doaj   +1 more source

Traffic eavesdropping based scheme to deliver time-sensitive data in sensor networks

open access: yes, 2010
Due to the broadcast nature of wireless channels, neighbouring sensor nodes may overhear packets transmissions from each other even if they are not the intended recipients of these transmissions.
Dixon, M.W.   +5 more
core   +1 more source

Building accurate radio environment maps from multi-fidelity spectrum sensing data [PDF]

open access: yes, 2016
In cognitive wireless networks, active monitoring of the wireless environment is often performed through advanced spectrum sensing and network sniffing. This leads to a set of spatially distributed measurements which are collected from different sensing ...
Pakparvar, Mostafa   +19 more
core   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

open access: yesAdvanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen   +5 more
wiley   +1 more source

Nahrain Mobile Learning System (NMLS)

open access: yesAl-Khawarizmi Engineering Journal, 2011
The work in this paper involves the planning, design and implementation of a mobile learning system called Nahrain Mobile Learning System (NMLS). This system provides complete teaching resources, which can be accessed by the students, instructors and ...
Mahmood Sami Abd Al-Kareem   +1 more
doaj   +2 more sources

The role of free wireless fidelity (Wi-Fi) service, food quality, and servicescape toward customer satisfaction [PDF]

open access: yesAsian Journal of Social Science Research, 2019
Culinary tourism is still one of the people's choices in Indonesia. Many culinary businesses field requires competitive strategies to get an edge. The purpose of this study was to examine the effect of Free Wireless Fidelity (Wifi) services, Food Quality
Rizal Ula Ananta Fauzi
doaj  

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

open access: yesAdvanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia   +3 more
wiley   +1 more source

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