Results 21 to 30 of about 1,088,242 (267)

Analytic reducibility of nondegenerate centers: Cherkas systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper we study the center problem for polynomial differential systems and we prove that any center of an analytic differential system is analytically reducible.
Jaume Giné, Jaume Llibre
doaj   +1 more source

A Hydrogen-Bromate Flow Battery as a Rechargeable Chemical Power Source

open access: yesMembranes, 2022
The hydrogen-bromate flow battery represents one of the promising variants for hybrid power sources. Its membrane-electrode assembly (MEA) combines a hydrogen gas diffusion anode and a porous flow-through cathode where bromate reduction takes place from ...
Natalia V. Kartashova   +7 more
doaj   +1 more source

Discrete Center Problems [PDF]

open access: yes, 2011
Our focus in this chapter is on discrete center location problems. This class of problems involves locating one or more facilities on a network to service a set of demand points at known locations in such a way that every demand receives its service from a closest facility, and the maximum distance between a demand and a closest facility is as small as
openaire   +4 more sources

The Discrete 2-Center Problem [PDF]

open access: yesDiscrete & Computational Geometry, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Agarwal, P. K., Sharir, M., Welzl, E.
openaire   +1 more source

The essential and the derivative moods of Aristotelian syllogism

open access: yesCogent Arts & Humanities, 2017
It is generally accepted that it is a mistake that Aristotle ignore the moods of the fourth figure in his syllogism. In this paper, I shall argue the Aristotelian syllogism consisting of the essential moods and their derivative moods is complete or self ...
Lei Ma
doaj   +1 more source

Estimations of Covering Functionals of Convex Bodies Based on Relaxation Algorithm

open access: yesMathematics, 2023
Estimating covering functionals of convex bodies is an important part of Chuanming Zong’s program to attack Hadwiger’s covering conjecture, which is a long-standing open problem from convex and discrete geometry.
Man Yu   +4 more
doaj   +1 more source

The stratified p-center problem [PDF]

open access: yesComputers & Operations Research, 2019
32 pages, 1 ...
Albareda Sambola, Maria   +2 more
openaire   +6 more sources

Cytokines in influenza in children (literature review)

open access: yesСибирский научный медицинский журнал
This literature review was compiled according to the data of search engines PubMed, eLIBRARY.RU, Google Scholar using key words influenza, cytokines, children. The article highlights the participation of pro-inflammatory and antiinflammatory cytokines in
E. D. Kazantseva   +3 more
doaj   +1 more source

Problem areas in the Republic of Srpska within the sustainable development context [PDF]

open access: yesZbornik Radova: Geografski Fakultet Univerziteta u Beogradu, 2018
The paper attempts to identify and define the poorly developed (problem) areas in the Republic of Srpska (a Bosnia and Herzegovina entity), the specificities of their geo-systems, the fundamental development issues and comparative development benefits ...
Živković Milenko, Papić Dragan
doaj   +1 more source

(𝒏, 𝟏, 𝟏, 𝜶)-Center Problem

open access: yes, 2014
Given a set 𝑆 of 𝑛 points in the plane and a constant 𝛼,(𝑛, 1, 1, 𝛼)-center problem is to find two closed disks which each covers the whole 𝑆, the diameter of the bigger one is minimized, and the distance of the two centers is at least 𝛼. Constrained (𝑛, 1, 1, 𝛼)-center problem is the (𝑛, 1, 1, 𝛼)-center problem in which the centers are forced to lie ...
P. Kavand   +2 more
openaire   +1 more source

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