Results 51 to 60 of about 7,251 (248)

Securing underwater communications: key agreement based on Fully Hashed MQV

open access: yes, 2017
This paper concerns the implementation and testing of a protocol that two honest parties can efficiently use to share a common secret session key. The protocol, based on the Fully Hashed Menezes-Qu-Vanstone (FHMQV) key agreement, is optimized to be used ...
Chiara Petrioli   +9 more
core   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

open access: yesAdvanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi   +4 more
wiley   +1 more source

Parametric Underwater Communications [PDF]

open access: yesProceedings of Meetings on Acoustics, 2012
High performance acoustic underwater communications require high bandwidths for high data rates, low carrier frequencies for low channel attenuation and highly directive transducers. These at first sight contradictory requirements can be satisfied by employing parametric arrays. In this way highly directive radiation, which mitigates multipath and thus
Karsten Wiedmann   +2 more
openaire   +1 more source

Software-In-Loop Simulation of an Underwater Wireless Sensor Network for Monitoring Seawater Quality: Parameter Selection and Performance Validation

open access: yesSensors, 2021
In this work, a real-time software-in-loop simulation technique was employed to test and analyse an underwater wireless sensor network. This simulation should facilitate the deployment of the real network and helps guarantee the network’s expected ...
Alberto Clavijo-Rodriguez   +3 more
doaj   +1 more source

Dynamic Modem Adaptation in Underwater Networks using Network Knowledge

open access: yes, 2023
108112This paper introduces an underwater modem adaptation based on channel descriptors and network layer knowledge. One topic in the EDA-SALSA project is smart adaptivity.
Sotnik, Dimitri
core   +1 more source

Root‐Stimulated Movements in Mimosa Pudica for Biohybrid Robotic Systems

open access: yesAdvanced Robotics Research, EarlyView.
This study demonstrates that thermal and electrical stimulation of Mimosa pudica root induces movement of the petiole and pinnules without direct stimulation of the aerial organs, thereby enabling a plant‐based robotic gripper and providing a foundation for the development of intelligent and sustainable systems.
Misao Sato   +6 more
wiley   +1 more source

Blind equalization for underwater communications [PDF]

open access: yes, 2014
Underwater wireless (sensor) networks would vastly improve man's ability to explore and exploit remote aquatic environments. Despite underwater sensor and vehicle technology being relatively mature, underwater communications is still a major challenge. The most challenging characteristics of the underwater acoustic communication channel are its low and
openaire   +3 more sources

Spread Spectrum Modulation with Grassmannian Constellations for Mobile Multiple Access Underwater Acoustic Channels

open access: yesSensors, 2022
The objective of this study is to evaluate Grassmannian constellations combined with a spread spectrum multiple access scheme for underwater acoustic mobile multiple access communication systems.
Christophe Bernard   +2 more
doaj   +1 more source

Real-time implementation of an underwater quantum key distribution system

open access: yes, 2022
As threats in the maritime domain diversify, securing data transmission becomes critical for underwater wireless networks designed for the surveillance of critical infrastructure and maritime border protection.
Levent, V. E.   +10 more
core   +1 more source

A Skull Bone Marrow‐to‐Brain Axis Links Osteoblastic Activity to Myeloid Cell Trafficking, Cerebral Blood Flow, and Cognition in Alzheimer's Progression

open access: yesAdvanced Science, EarlyView.
This study reveals that Alzheimer's disease–linked APP expression in bone‐forming cells drives skull bone marrow remodeling and alters its vascular connections to the brain. These changes disrupt immune cell trafficking, cerebral blood flow, and cognition. Targeting bone marrow macrophages restores brain function, highlighting a previously unrecognized
Lei Xiong   +6 more
wiley   +1 more source

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