Results 31 to 40 of about 585,996 (284)

Full-Coupled Channel Approach to Doubly Strange $s$-Shell Hypernuclei [PDF]

open access: yes, 2004
We describe {\it ab initio} calculations of doubly strange, $S=-2$, $s$-shell hypernuclei ($^4_{\Lambda\Lambda}$H, $^5_{\Lambda\Lambda}$H, $^5_{\Lambda\Lambda}$He and $^6_{\Lambda\Lambda}$He) as a first attempt to explore the few-body problem of the ...
H. Nemura   +5 more
core   +3 more sources

Impact of Roads on Environmental Protected Areas: Analysis and Comparison of Metrics for Assessing Habitat Fragmentation

open access: yesLand, 2022
The present study focuses on evaluating the effect of fragmentation caused by road infrastructures on a territory with singular characteristics such as low population density and a high proportion of its surface area protected by the Natura 2000 network.
Manuel Sánchez-Fernández   +3 more
doaj   +1 more source

Clinical profile of Saudi patients with multiple myeloma

open access: yesJournal of Nature and Science of Medicine, 2019
Background: Multiple myeloma (MM) is a neoplasm of plasma cells. Ethnic variations among the clinical features of MM have been reported. Objectives: This study was performed to assess the clinical features of Saudi MM patients. Patients and Methods: Data
Alanoud Abdulaziz Alhuqayl   +5 more
doaj   +1 more source

Design of Broadband Double-Ridge Horn Antenna for Millimeter-Wave Applications

open access: yesIEEE Access, 2021
In this paper, a broadband double-ridge horn antenna (DRHA) covering 5G millimeter-wave (mm-wave) band is proposed, which maintains stable radiation pattern and gain in the entire band.
Yuqi He   +7 more
doaj   +1 more source

$\lambda$-lattices [PDF]

open access: yesMathematica Bohemica, 1997
Let \(a, b\) be elements of a poset \((P, \leq).\) Let \(U(a, b) := \{ x\in P; a\leq x \;\& \;b\leq x\},\) \(L(a, b) := \{ x\in P; x\leq a \^^M\&\;x\leq b\}.\) The poset \((P, \leq)\) is called a \(\lambda \)-poset if there is a (fixed) choice function \(\lambda \) such that \(\lambda (L(a, b)) = a\) and \(\lambda (U(a, b)) = b,\) provided \(a\leq b.\)
openaire   +1 more source

Information Theory: Deep Ideas, Wide Perspectives, and Various Applications

open access: yesEntropy, 2021
The history of information theory, as a mathematical principle for analyzing data transmission and information communication, was formalized in 1948 with the publication of Claude Shannon’s famous paper “A Mathematical Theory of Communication” [...]
Irad Ben-Gal, Evgeny Kagan
doaj   +1 more source

Analytic structure of Bloch functions for linear molecular chains [PDF]

open access: yes, 2006
This paper deals with Hamiltonians of the form $H=-{\bf \nabla}^2+v(\rr)$, with $v(\rr)$ periodic along the $z$ direction, $v(x,y,z+b)=v(x,y,z)$. The wavefunctions of $H$ are the well known Bloch functions $\psi_{n,\lambda}(\rr)$, with the fundamental ...
E. Prodan   +3 more
core   +1 more source

An Activity-Based Travel Personalization Tool Driven by the Genetic Algorithm

open access: yesJournal of Advanced Transportation, 2023
The necessity for an external control mechanism that optimizes daily urban trips becomes evident when considering numerous factors at play within a complex environment.
Ali Enes Dingil, Domokos Esztergár-Kiss
doaj   +1 more source

Hyperonic mixing in five-baryon double-strangeness hypernuclei in a two-channel treatment

open access: yes, 2003
Properties of hypernuclei $_{\Lambda \Lambda}^5$H and $_{\Lambda \Lambda }^5$He are studied in a two-channel approach with explicit treatment of coupling of channels ^3\text{Z}+\Lambda+\Lambda and \alpha+\Xi.
B. F. Gibson   +17 more
core   +1 more source

On constructions with $2$-cardinals [PDF]

open access: yes, 2017
We propose developing the theory of consequences of morasses relevant in mathematical applications in the language alternative to the usual one, replacing commonly used structures by families of sets originating with Velleman's neat simplified morasses ...
Koszmider, Piotr
core   +1 more source

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