Results 41 to 50 of about 2,220,071 (341)

Physical-layer identification of wireless sensor nodes

open access: yes, 2012
Identification of wireless sensor nodes based on the physical characteristics of their radio transmissions can potentially provide additional layer of security in all-wireless multi-hop sensor networks. Reliable identification can be means for detection and/or prevention of wormhole, Sybil and replication attacks, and for complementing cryptographic ...
Danev, Boris, Capkun, Srdjan
openaire   +2 more sources

Efficient Physical Organization of R-Trees Using Node Clustering [PDF]

open access: yesJournal of Computer Science, 2007
R-Tree is a multidimensional indexing structure that forms basis for all the multidimensional indexing structures based on data partitioning. A number of attempts have been made in the past to improve the performance of R-Tree by manipulating the tree parameters and the data parameters.
F.Sagayaraj Francis, P. Thadurambi
openaire   +1 more source

Design your own universe: a physics-informed agnostic method for enhancing graph neural networks [PDF]

open access: yesInternational Journal of Machine Learning and Cybernetics
Physics-informed Graph Neural Networks have achieved remarkable performance in learning through graph-structured data by mitigating common GNN challenges such as over-smoothing, over-squashing, and heterophily adaption.
Dai Shi   +5 more
semanticscholar   +1 more source

Node-weighted centrality: a new way of centrality hybridization

open access: yesComputational Social Networks, 2020
Centrality measures have been proved to be a salient computational science tool for analyzing networks in the last two to three decades aiding many problems in the domain of computer science, economics, physics, and sociology.
Ashutosh Kumar Singh   +2 more
semanticscholar   +1 more source

A Tree Soft Set Framework for Evaluating Teaching Quality in University Physics Programs: Enhancing Precision and Decision-Making [PDF]

open access: yesNeutrosophic Sets and Systems
Education in physics is at a crossroads. Numerous nations have middling or worse levels of scientific literacy, according to international research, and their students are viewed as being ill-equipped to handle the challenges going forward.
Hongzhi Zhao, Fengqiang Zhang
doaj   +1 more source

Are there laws of genome evolution? [PDF]

open access: yesPLoS Computational Biology, 2011
Research in quantitative evolutionary genomics and systems biology led to the discovery of several universal regularities connecting genomic and molecular phenomic variables.
Eugene V Koonin
doaj   +1 more source

CaTe: a new topological node-line and Dirac semimetal

open access: yesnpj Quantum Materials, 2017
Topological physics: a predicted node-line semimetal CaTe Topological insulators are materials with non-trivial topological order that are insulating in their bulk but conductive on their surface.
Yongping Du   +7 more
doaj   +1 more source

Understanding local interactions in freestanding flexible poly(vinylidene fluoride)/poly(3,4‐ethyelenedioxythiophene):poly(styrelenesulfonate) films using impedance, Raman, and X‐ray absorption spectroscopy

open access: yesSPE Polymers
The local interaction within poly(vinylidene fluoride)/poly(3,4‐ethyelenedioxythiophene):poly(styrelenesulfonate) (PVDF/PEDOT:PSS) composite films has been explored in this study.
Mandeep Jangra   +2 more
doaj   +1 more source

Reconstruction Thresholds on Regular Trees [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2003
We consider themodel of broadcasting on a tree, with binary state space, on theinfinite rooted tree $T^k$ in which each node has $k$ children. The root of the tree takesa random value $0$ or $1$, and then each node passes a value independently to each of
James B. Martin
doaj   +1 more source

Toward a systematic improvement of the fixed-node approximation in diffusion Monte Carlo for solids-A case study in diamond.

open access: yesJournal of Chemical Physics, 2020
While Diffusion Monte Carlo (DMC) is in principle an exact stochastic method for ab initio electronic structure calculations, in practice, the fermionic sign problem necessitates the use of the fixed-node approximation and trial wavefunctions with ...
A. Benali   +11 more
semanticscholar   +1 more source

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