Results 41 to 50 of about 46,100 (297)

Robocasting of a Water‐Based Biopolymer/WO3 Nanopowder Paste as a Precursor to Tungsten Carbide Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates a novel, additive manufacturing approach to produce complex, porous tungsten carbide structures using water‐based direct ink writing/robocasting. Leveraging a modified commercial printer and heat treatment, the process yields lightweight, electrically conductive 3D architectures capable of supporting a mechanical load.
James Bentley Bevis   +3 more
wiley   +1 more source

Enhanced Network Metric Prediction for Machine Learning-Based Cyber Security of a Software-Defined UAV Relay Network

open access: yesIEEE Access
Unmanned aerial vehicles (UAVs), e.g., drones, have become crucial assets in the military’s fleet of vehicles. UAVs can provide limited bandwidth for tactical communications and can act as relays over battlefields.
Dennis Agnew   +2 more
doaj   +1 more source

Avoiding Black Hole and Cooperative Black Hole Attacks in Wireless Ad hoc Networks

open access: yes, 2010
In wireless ad hoc networks, the absence of any control on packets forwarding, make these networks vulnerable by various deny of service attacks (DoS). A node, in wireless ad hoc network, counts always on intermediate nodes to send these packets to a given destination node.
Baadache, Abderrahmane, Belmehdi, Ali
openaire   +2 more sources

How well can ultracompact bodies imitate black hole ringdowns?

open access: yes, 2018
The ongoing observations of merging black holes by the instruments of the fledging gravitational wave astronomy has opened the way for testing the general relativistic Kerr black hole metric and, at the same time, for probing the existence of more ...
Glampedakis, Kostas, Pappas, George
core   +1 more source

Stationary scalar and vector clouds around Kerr-Newman black holes

open access: yes, 2020
Massive bosons in the vicinity of Kerr-Newman black holes can form pure bound states when their phase angular velocity fulills the synchronisation condition, i.e. at the threshold of superradiance.
Herdeiro, Carlos A. R., Santos, Nuno M.
core   +1 more source

3D‐Printable Near‐Infrared‐Responsive Microscale Cantilever made of the Composite Consisting of Ceramic Particles and Graphene Flakes

open access: yesAdvanced Engineering Materials, EarlyView.
A near infrared‐responsive microscale cantilever is developed using a 3D‐printable composite based on photocurable resin consisting of sepiolite and graphene flakes. The material absorbs 1064 nm light, causing shape transformation with an average displacement of 1.3 mm in 1.7 s. Displacement is measured via video recording.
Karolina Laszczyk   +3 more
wiley   +1 more source

The evaluation of luminance in a road tunnel based on CIE88-2004 standard to reduce road accidents

open access: yesSalāmat-i kār-i Īrān, 2020
Background and aims: Traffic safety is a major concern all around the world. About 1.5 million people die each year from road accidents and 50 million are injured.
Ahmad Mehri   +7 more
doaj  

A Review on Black Hole Attack in Mobile Adhoc Network

open access: yesInternational Journal of Computer Applications, 2015
Mobile ad hoc network is selfconfiguring and infrastructure less network. Due to its dynamic nature, it is more susceptible to severe type of attacks. An assortment of attacks is there to mischief the dexterous working of MANET. One of these attacks is the Black Hole attack which leads to dropping of messages.
Vimal Dhote, Jyoti Sondhi, Anand Motwani
openaire   +2 more sources

Love in Extrema Ratio

open access: yes, 2019
The tidal deformability of a self-gravitating object leaves an imprint on the gravitational-wave signal of an inspiral which is paramount to measure the internal structure of the binary components.
Maselli, Andrea, Pani, Paolo
core   +1 more source

Development and Preliminary In Vivo Study of 3D‐Printed Bioactive Glass Scaffolds with Trabecular Architecture

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports the fabrication of trabecular bioactive glass scaffolds (composition “1d”: 46.1SiO2‐28.7CaO‐8.8MgO‐6.2P2O5‐5.7CaF2‐4.5Na2O wt%) through vat photopolymerization and the relevant results from mechanical testing and in vivo implantation procedures in rabbit femora, showing great promise for bone tissue engineering applications.
Dilshat Tulyaganov   +8 more
wiley   +1 more source

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