Results 61 to 70 of about 53,847 (310)

Fiber‐Endface‐Integrated PdSe2/2H‐MoTe2 Heterojunction Photodetector for Broadband Linear‐Polarization Detection

open access: yesAdvanced Materials Interfaces, EarlyView.
An all‐in‐fiber broadband polarization photodetector is demonstrated by integrating a PdSe2/2H‐MoTe2 van der Waals heterostructure onto a fiber endface. The device exhibits broadband response spanning 532 nm to 1630 nm, a fast response time of 59 µs, and a polarization ratio of 1.99. This work demonstrates a promising hardware strategy for polarization
Zexing Zheng   +11 more
wiley   +1 more source

A Systematic Literature Review of Zero Trust Architecture for Military UAV Security Systems

open access: yesIEEE Access
Over the last couple of years, the application of autonomous systems such as drones has been widely accepted, and these applications are used in the defense, safety, logistics, delivery, and consumer sectors.
Alanoud A. Alquwayzani   +1 more
doaj   +1 more source

Physical Intrusion Games—Optimizing Surveillance by Simulation and Game Theory

open access: yesIEEE Access, 2017
The protection of cyber-physical networks is a topic of increasing importance. The evolution of IT (cyber) systems that control and supervise the underlying physical system has grown over decades, whereas security has not become a concern until quite ...
Stefan Rass   +5 more
doaj   +1 more source

Ti3C2Tx MXene/Silver Composite Foams For Lightweight, High‐Performance Electromagnetic Interference Shielding and Joule Heating

open access: yesAdvanced Materials Interfaces, EarlyView.
Ultrathin MXene/EMF composite foams achieve a specific shielding efficiency of 749.6 dB.dB·cm3$\mathrm{dB}\cdot {\mathrm{cm}}^{3}$/g, while the silver‐enhanced MXene/Ag/EMF reaches 81.4 dB shielding effectiveness at just 1.0 mm thickness. Both composites exhibit rapid Joule heating, retain stability up to 250∘C$^\circ{\rm C}$, and withstand 1000 ...
Abdullah A. Mahmood   +7 more
wiley   +1 more source

Environmental sensor networks

open access: yes, 2004
Sensor networks for the natural environment require an understanding of earth science, combined with sensor, communications and computer technology.
Martinez, Kirk, Ong, Royan, Hart, Jane
core   +1 more source

A Literature Review on Cybersecurity Risks and Challenges Assessments in Virtual Power Plants: Current Landscape and Future Research Directions

open access: yesIEEE Access
Virtual Power Plants (VPPs) have emerged as dynamic solutions, harnessing the distributed resources such as solar panel and batteries. However, the complicated interconnectedness of VPPs exposes them to unique cybersecurity vulnerabilities ...
Razan Alajlan   +3 more
doaj   +1 more source

User-Driven Adaptive Sampling for Massive Internet of Things

open access: yesIEEE Access, 2020
Energy conservation techniques are crucial to achieving high reliability in the Internet of Things (IoT) services, especially in the Massive IoT (MIoT), which stringently requires cost-effective and low-energy consumption for battery-powered devices ...
Le Kim-Hung, Quan Le-Trung
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

Biodegradable Wireless Soil Urea Sensor Using Metamaterial Perfect Absorber for Distributed Deployment in Precision Agriculture

open access: yesAdvanced Materials Technologies, EarlyView.
In this study, we propose a biodegradable wireless soil urea sensor for precision agriculture. The sensor's electromagnetic response varies depending on the urea concentration, allowing the measurement of relative soil urea concentrations by analyzing the time‐transient electromagnetic response.
Yu Tanaami   +5 more
wiley   +1 more source

Security in Computer and Information Sciences [PDF]

open access: yes, 2018
This open access book constitutes the thoroughly refereed proceedings of the First International ISCIS Security Workshop 2018, Euro-CYBERSEC 2018, held in London, UK, in February 2018.

core   +2 more sources

Home - About - Disclaimer - Privacy