Results 31 to 40 of about 541,185 (309)

A band of bound states in the continuum induced by disorder

open access: yesScientific Reports, 2018
Bound states in the continuum usually refer to the phenomenon of a single or a few discrete bound states embedded in a continuous spectrum of extended states.
Yi-Xin Xiao, Zhao-Qing Zhang, C. T. Chan
doaj   +1 more source

Multinomial randomness models for retrieval with document fields [PDF]

open access: yes, 2007
Document fields, such as the title or the headings of a document, offer a way to consider the structure of documents for retrieval. Most of the proposed approaches in the literature employ either a linear combination of scores assigned to different ...
Ounis, I., Plachouras, V.
core   +1 more source

Modelling the Reliability of Logistics Flows in a Complex Production System

open access: yesEnergies, 2023
This paper analyses the disruptions occurring in a production system determining the operating states of a single machine. A system with a convergent production character, in which both single flows (streams) and multi-stream flows occur, was considered.
Bożena Zwolińska, Jakub Wiercioch
doaj   +1 more source

Quasi‐random hypergraphs revisited [PDF]

open access: yesRandom Structures & Algorithms, 2011
AbstractThe quasi‐random theory for graphs mainly focuses on a large equivalent class of graph properties each of which can be used as a certificate for randomness. For k ‐graphs (i.e., k ‐uniform hypergraphs), an analogous quasi‐random class contains various equivalent graph properties including the k ‐discrepancy property (bounding the number of ...
openaire   +1 more source

Sunflowers and Quasi-Sunflowers from Randomness Extractors [PDF]

open access: yes, 2018
The Erdös-Rado sunflower theorem (Journal of Lond. Math. Soc. 1960) is a fundamental result in combinatorics, and the corresponding sunflower conjecture is a central open problem.
Lovett, Shachar   +5 more
core   +1 more source

Toppling Pencils—Macroscopic Randomness from Microscopic Fluctuations

open access: yesEntropy, 2020
We construct a microscopic model to study discrete randomness in bistable systems coupled to an environment comprising many degrees of freedom. A quartic double well is bilinearly coupled to a finite number N of harmonic oscillators.
Thomas Dittrich   +1 more
doaj   +1 more source

F$F$‐factors in Quasi‐random Hypergraphs

open access: yesJournal of the London Mathematical Society, 2022
Given $k\ge 2$ and two $k$-graphs ($k$-uniform hypergraphs) $F$ and $H$, an $F$-factor in $H$ is a set of vertex-disjoint copies of $F$ that together covers the vertex set of $H$. Lenz and Mubayi [J. Combin. Theory Ser. B, 2016] studied the $F$-factor problem in quasi-random $k$-graphs with minimum degree $Ω(n^{k-1})$.
Ding, Laihao   +4 more
openaire   +2 more sources

Randomness and Irreversiblity in Quantum Mechanics: A Worked Example for a Statistical Theory

open access: yesEntropy, 2021
The randomness of some irreversible quantum phenomena is a central question because irreversible phenomena break quantum coherence and thus yield an irreversible loss of information.
Yves Pomeau, Martine Le Berre
doaj   +1 more source

Quasi-Random Sampling for Condensation [PDF]

open access: yes, 2000
The problem of tracking pedestrians from a moving car is a challenging one. The Condensation tracking algorithm is appealing for its generality and potential for real-time implementation. However, the conventional Condensation tracker is known to have difficulty with high-dimensional state spaces and unknown motion models.
Vasanth Philomin   +2 more
openaire   +1 more source

Randomness-free Test of Non-classicality: a Proof of Concept

open access: yes, 2023
Quantum correlations and non-projective measurements underlie a plethora of information-theoretic tasks, otherwise impossible in the classical world. Existing schemes to certify such non-classical resources in a device-independent manner require seed ...
Kaumudibikash Goswami (14817118)   +5 more
core   +1 more source

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