Results 81 to 90 of about 121,303 (350)

Transducer Materials Mediated Deep Brain Stimulation in Neurological Disorders

open access: yesAdvanced Functional Materials, EarlyView.
This review discusses advanced transducer materials for improving deep brain stimulation (DBS) in neurological disorders. These materials respond to light, ultrasound, or magnetic fields, enabling precise, less invasive neuromodulation. Their stimulus‐responsive properties enhance neural control and adaptive therapy, paving the way for next‐generation ...
Di Zhao   +5 more
wiley   +1 more source

Quarantine region scheme to mitigate spam attacks in wireless sensor networks [PDF]

open access: yes, 2006
The Quarantine Region Scheme (QRS) is introduced to defend against spam attacks in wireless sensor networks where malicious antinodes frequently generate dummy spam messages to be relayed toward the sink.
Cayirci, Erdal   +5 more
core   +1 more source

A Balanced Energy-Consuming and Hole-Alleviating Algorithm for Wireless Sensor Networks

open access: yesIEEE Access, 2017
In wireless sensor networks, energy balancing and energy efficiency are the key requirements to prolong the network lifetime. In this paper, we investigate the problem of energy hole, in which sensor nodes located near the sink or in some other parts of ...
Naeem Jan   +6 more
doaj   +1 more source

Defects in Inorganic Mechanoluminescent Phosphors: Insights and Impacts

open access: yesAdvanced Functional Materials, EarlyView.
Mechanoluminescence is attracting more attention recently, and defect dominates mechanoluminescence performances. Investigating how defects work in the mechanoluminescence process is crucial for elucidating its complex luminescence mechanism. This review aims to emphasize the fundamental role of defects in mechanoluminescence, which offers an ...
Wenhao Li   +3 more
wiley   +1 more source

Complexity of increasing the secure connectivity in wireless ad hoc networks [PDF]

open access: yes, 2013
We consider the problem of maximizing the secure connectivity in wireless ad hoc networks, and analyze complexity of the post-deployment key establishment process constrained by physical layer properties such as connectivity, energy consumption and ...
Camtepe, Seyit
core   +2 more sources

Analysis of power optimization and enhanced routing protocols for wireless sensor networks

open access: yesMeasurement: Sensors, 2023
Computers are connected through a network. Wireless sensor nodes are used in sensor networks to keep tabs on their surroundings. The building components of a network are sensor nodes.
D. Hemanand   +5 more
doaj  

Secure Strategy for Key Pre-Distribution in Wireless Sensor Networks

open access: yes, 2016
Wireless sensor networks (WSN) are a collection of sensor nodes, which is deployed spatially among various environments. WSNs are deployed in environments where wired networks are difficult to set up.
D.S.S.L. Sruthi, D.Sesha Manoj, R. Reddy
semanticscholar   +1 more source

A Key Pre-Distribution Scheme Based on µ-PBIBD for Enhancing Resilience in Wireless Sensor Networks

open access: yesItalian National Conference on Sensors, 2018
Many key pre-distribution (KPD) schemes based on combinatorial design were proposed for secure communication of wireless sensor networks (WSNs). Due to complexity of constructing the combinatorial design, it is infeasible to generate key rings using the ...
Qi Yuan   +3 more
semanticscholar   +1 more source

Rapid Diagnostics of Reconfigurable Intelligent Surfaces Using Space‐Time‐Coding Modulation

open access: yesAdvanced Functional Materials, EarlyView.
A fast reconfigurable‐intelligent‐surface (RIS) diagnostics method is proposed based on spatio‐temporal modulation with orthogonal codes. Theoretical analysis demonstrates a clear distinction in code channel power between normal and faulty elements. Simulations validate its feasibility under high fault ratios and varying receiving angles.
Yi Ning Zheng   +7 more
wiley   +1 more source

Survey of Key Distribution Schemes for Wireless Sensor Networks

open access: yes, 2014
This paper presents a survey of key distribution schemes for wireless sensor networks. This survey includes the new approach of key distribution using the piggy bank method. Different Network architectures and different key pre-distribution schemes are described.
openaire   +2 more sources

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