Results 41 to 50 of about 9,557 (195)

Fracture Networks in Sea Ice

open access: yesFrontiers in Physics, 2014
Fracturing and refreezing of sea ice in the Kara sea are investigated using complex networkanalysis. By going to the dual network, where the fractures are nodes and their intersectionslinks, we gain access to topological features which are easy to ...
Jonas Nesland Vevatne   +5 more
doaj   +1 more source

Taiwan’s ecological footprint and overshoot day

open access: yesScientific Reports, 2021
This study examines Taiwan’s ecological footprint (EF) and its Overshoot Day from 2000 to 2018. The latest EF calculation method is used to determine the conversion rates and equivalent factors of bioproductive lands in each year to establish a database ...
Yung-Jaan Lee, Lei Chai, Po-Shu Wu
doaj   +1 more source

Radiation from an emitter in the ghost free scalar theory

open access: yes, 2016
We study radiation emitted by a time-dependent source of a scalar massless field in the framework of the ghost-free modifications of the theory. We consider a simple model of the emitter: namely,we assume that it is point-like and monochromatic.
Frolov, Valeri P., Zelnikov, Andrei
core   +1 more source

GFN-SR: Symbolic Regression with Generative Flow Networks

open access: yes, 2023
Symbolic regression (SR) is an area of interpretable machine learning that aims to identify mathematical expressions, often composed of simple functions, that best fit in a given set of covariates $X$ and response $y$. In recent years, deep symbolic regression (DSR) has emerged as a popular method in the field by leveraging deep reinforcement learning ...
Li, Sida   +2 more
openaire   +2 more sources

Computer-Aided Proof for Extended Generalized Feistel Networks

open access: yesIACR Transactions on Symmetric Cryptology
(Multi-branch) Generalized Feistel Network (GFN) enables the construction of block ciphers from non-linear components with small domains, and has been adopted in various block ciphers. Berger et al. (SAC 2013) introduced the Extended Generalized Feistel
Yuchao Chen   +6 more
doaj   +1 more source

Challenging Lorentz noninvariant neutrino oscillations without neutrino masses [PDF]

open access: yes, 2007
We show that the combined data from solar, long-baseline and reactor neutrino experiments can exclude the generalized bicycle model of Lorentz noninvariant direction-dependent and/or direction-independent oscillations of massless neutrinos.
Barger, V., Marfatia, D., Whisnant, K.
core   +1 more source

Enumerating Polytropes [PDF]

open access: yes, 2016
Polytropes are both ordinary and tropical polytopes. We show that tropical types of polytropes in $\mathbb{TP}^{n-1}$ are in bijection with cones of a certain Gr\"{o}bner fan $\mathcal{GF}_n$ in $\mathbb{R}^{n^2 - n}$ restricted to a small cone called ...
Tran, Ngoc Mai
core  

Selenium‐Incorporated Polymerized Nonfullerene Acceptors/SWCNT Composites with Polymer‐Assisted n‐Doping for High‐Performance Organic Thermoelectrics

open access: yesAdvanced Functional Materials, EarlyView.
Selenium‐incorporated polymerized nonfullerene acceptor PCB2Se forms a strong supramolecular complex with SWCNTs, enabling a record‐high zT of 0.29. Sequential N‐DMBI doping, mediated through a polymer‐assisted electron‐transfer pathway, successfully converts the PCB2Se/SWCNT composite into an efficient n‐type material with an impressive power factor ...
Chi‐Chun Tseng   +8 more
wiley   +1 more source

XTBDFT: Automated workflow for conformer searching of minima and transition states powered by extended tight binding and density functional theory

open access: yesSoftwareX, 2022
Recent developments have greatly increased accuracy, applicability, and accessibility of extended tight binding theory (XTB), allowing for rapid semi-empirical quantum mechanical calculations of molecular potential energy surfaces.
Sibo Lin, Mohamed Elanany, Motaz Khawaji
doaj   +1 more source

Noncommutative spectral geometry of Riemannian foliations

open access: yes, 1997
We construct spectral triples in a sense of noncommutative differential geometry, associated with a Riemannian foliation on a compact manifold, and describe its dimension spectrum.Comment: LaTeX 2.09, 33 ...
Kordyukov, Yuri A.
core   +2 more sources

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