Results 51 to 60 of about 8,910 (210)

mTOSSIM: A simulator that estimates battery lifetime in wireless sensor networks [PDF]

open access: yes, 2013
Knowledge of the battery lifetime of the wireless sensor network is important for many situations, such as in evaluation of the location of nodes or the estimation of the connectivity, along time, between devices.
Barbancho Concejero, Julio   +5 more
core  

M-GEAR: Gateway-Based Energy-Aware Multi-Hop Routing Protocol for WSNs

open access: yes, 2013
In this research work, we advise gateway based energy-efficient routing protocol (M-GEAR) for Wireless Sensor Networks (WSNs). We divide the sensor nodes into four logical regions on the basis of their location in the sensing field.
Din, A.   +5 more
core   +1 more source

Energy and Distance Optimization in Rechargeable Wireless Sensor Networks

open access: yesIEEE Transactions on Green Communications and Networking, 2021
The aim of a mobile recharger operating in a wireless sensor network (WSN) is to keep the network’s average consumed energy and covered distance low. As shown in the literature, the covered distance is minimized when the mobile recharger’s base is located as per the solution of a median problem, while the network’s average energy consumption is ...
Georgios Tsoumanis   +3 more
openaire   +2 more sources

Fully Wireless and Flexible Valves for Multiplexed and Prolonged Intravesical Liquid Release

open access: yesAdvanced Healthcare Materials, EarlyView.
A fundamental mechanism for the simultaneous control of multiple magnetic valves is reported in a miniature soft robotic patch for intravesical drug delivery, enabling fully wireless and programmable liquid release. Integrated with a bioadhesive interface and induction‐coupling‐based liquid volume sensing, the soft robotic patch is promising to enable ...
Boyang Xiao   +5 more
wiley   +1 more source

Embracing Localization Inaccuracy: A Case Study [PDF]

open access: yes, 2012
In recent years, indoor localization has become a hot research topic with some sophisticated solutions reaching accuracy on the order of ten centimeters.
Murphy, Amy L.   +2 more
core   +1 more source

Soft Ionic and Electronic Triboelectric Nanogenerators: Toward Attachable and Implantable Biomedical Applications

open access: yesAdvanced Materials, EarlyView.
This review provides an overview of triboelectric nanogenerator (TENG)–based biomedical applications by classifying studies into electronic and ionic systems across attachable and implantable platforms. It summarizes key material choices, device structures, and working mechanisms that characterize current TENG‐based research, and outlines six future ...
Kyongtae Choi   +12 more
wiley   +1 more source

Recent Advances in Electrospun Nanofibers for Triboelectric Nanogenerators: Performance Enhancement Strategies and Emerging Applications

open access: yesAdvanced Materials, EarlyView.
This review highlights recent advances in electrospun nanofiber‐based triboelectric nanogenerators, emphasizing how material design, fiber architecture, and interface engineering collectively enhance output performance and mechanical durability. Key developments in porous, aligned, core‐shell, and hierarchical nanofibers are discussed alongside ...
MD Fajla Rabbi   +3 more
wiley   +1 more source

Chemically Doped Conductive Polymers for Wearable Health Monitoring

open access: yesAdvanced Materials Technologies, EarlyView.
Among conductive polymers, poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), polyaniline (PANI), and polypyrrole (PPy) are the most studied and applied. Chemical doping significantly boosts intrinsic conductivity and mechanical robustness.
Mengdi Zuo   +5 more
wiley   +1 more source

Optimum Transmission Policies for Energy Harvesting Sensor Networks Powered By a Mobile Control Center

open access: yes, 2016
Wireless energy transfer, namely RF-based energy harvesting, is a potential way to prolong the lifetime of energy-constrained devices, especially in wireless sensor networks. However, due to huge propagation attenuation, its energy efficiency is regarded
Chen, Zhengchuan   +3 more
core   +1 more source

Optimal Selection of Spectrum Sensing Duration for an Energy Harvesting Cognitive Radio [PDF]

open access: yes, 2013
In this paper, we consider a time-slotted cognitive radio (CR) setting with buffered and energy harvesting primary and CR users. At the beginning of each time slot, the CR user probabilistically chooses the spectrum sensing duration from a predefined set.
Shafie, Ahmed El, Sultan, Ahmed
core   +1 more source

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