Results 31 to 40 of about 45,447 (293)

Analysis of black hole solutions in parabolic class using neural networks

The European Physical Journal C, 2023
AbstractIn this paper, we introduce a numerical method based on Artificial Neural Networks (ANNs) for the analysis of black hole solutions to the Einstein-axion-dilaton system in a high dimensional parabolic class. Leveraging a profile root-finding technique based on General Relativity we describe an ANN solver to directly tackle the system of ordinary
Hatefi, Ehsan, Hatefi, Armin, López Sastre, Roberto Javier   +2 more
openaire   +3 more sources

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

Advanced 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, Manasi Shah, Sanketh Gombi, Rodrigo Martinez‐Duarte   +3 more
wiley   +1 more source

On Singularities and Black Holes in Combination-Driven Models of Technological Innovation Networks

PLOS ONE, 2016
It has been suggested that innovations occur mainly by combination: the more inventions accumulate, the higher the probability that new inventions are obtained from previous designs. Additionally, it has been conjectured that the combinatorial nature of innovations naturally leads to a singularity: at some finite time, the number of innovations should ...
Ricard V. Solé, Daniel R. Amor, Daniel R. Amor, Sergi Valverde, Sergi Valverde   +4 more
openaire   +7 more sources

Hydrogel‐Based Photothermal‐Catalytic Membrane for Efficient Cogeneration of Freshwater and Hydrogen in Membrane Distillation System

Advanced Functional Materials, EarlyView.
This work presents an overview of the PTC‐VMD system for water‐hydrogen co‐generation. a) Illustration of the hydrogel‐based PTC membrane and the co‐generation of water and hydrogen. b) Structure of the PTC‐VMD system and the functions of each component layer.
Jiawei Sun, Muhammad Usman Farid, Wenlong Xi, Gang Lu, Min Wei Boey, Sai Kishore Ravi, Patrick H.‐L. Sit, Alicia Kyoungjin An   +7 more
wiley   +1 more source

A Contribution to Secure the Routing Protocol "Greedy Perimeter Stateless Routing" Using a Symmetric Signature-Based AES and MD5 Hash

, 2011
This work presents a contribution to secure the routing protocol GPSR (Greedy Perimeter Stateless Routing) for vehicular ad hoc networks, we examine the possible attacks against GPSR and security solutions proposed by different research teams working on ...
Erritali, Mohammed, Ouahidi, Bouabid El, Reda, Oussama Mohamed   +2 more
core   +1 more source

The eccentricity distribution of compact binaries [PDF]

, 2011
The current gravitational wave detectors have reached their operational sensitivity and are nearing detection of compact object binaries. In the coming years, we expect that the Advanced LIGO/VIRGO will start taking data.
Abadie, Acernese, Anderson, Belczynski, Belczynski, Belczynski, Belczynski, Belczynski, Belczynski, Bogomazov, Burgay, D. Gondek-Rosinska, De Donder, Dessart, Dewi, Dewi, Faulkner, Fryer, Gondek-Rosińska, Harry, Hobbs, Hut, I. Kowalska, Ivanova, K. Belczynski, Kawamura, Kiel, Kitaura, LIGO Scientific Collaboration, Lorimer, M. Dominik, Mandel, Nelemans, Peters, Peters, Pfahl, Schnittman, Seto, Sipior, Spallicci, T. Bulik, Taam, Timmes, Voss, Webbink, Wolszczan   +45 more
core   +1 more source

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

, 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

Thermally Induced Gelling Systems Based on Patchy Polymeric Micelles

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
A novel strategy to design thermally induced gelling systems with tunable material properties is reported. Polymeric mixed‐shell micelles displaying multiple thermosensitive patchy domains formed hydrogels by assembling into well‐entangled worm‐like network structures upon heating to body temperature. The patchy micelle design significantly affects the
Binru Han, Shota Fujii, André J. van der Vlies, Masoud Ghasemi, Joshua T. Del Mundo, Sarah N. Kiemle, Esther W. Gomez, Enrique D. Gomez, Ralph H. Colby, Urara Hasegawa   +9 more
wiley   +1 more source

How well can ultracompact bodies imitate black hole ringdowns?

, 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

Structurally Colored Physically Unclonable Functions with Ultra‐Rich and Stable Encoding Capacity

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
This study reports a design strategy for generating bright‐field resolvable physically unclonable functions with extremely rich encoding capacity coupled with outstanding thermal and chemical stability. The optical response emerges from thickness‐dependent structural color formation in ZnO features, which are fabricated by physical vapor deposition ...
Abidin Esidir, Miaoning Ren, Sami Pekdemir, Mustafa Kalay, Nilgun Kayaci, Nail Gunaltay, Hakan Usta, Xian Huang, Mustafa Serdar Onses   +8 more
wiley   +1 more source