Results 21 to 30 of about 5,124,705 (288)

p-Center Problems [PDF]

open access: yes, 2015
no ...
Calik, Hatice   +2 more
openaire   +3 more sources

Monitoring and Forecasting the Dynamics of the Incidence of COVID-19 in Moscow: 2020–2021

open access: yesЭпидемиология и вакцинопрофилактика, 2022
Relevance. The accumulation of information (statistical data and knowledge) about the COVID-19 pandemic leads to the refinement of mathematical models, to the expansion of the area of their use.
A. V. Sokolov, L. A. Sokolova
doaj   +1 more source

Sociology of knowledge оn the generations formation mechanism [PDF]

open access: yesСоциологический журнал, 2013
Socialization process involves interaction between two generations – prevalent and growing one. The present article demonstrates, that different generations display two various types of rational behavior in terms of intergenerational relations ...
V. M. Pashinskiy
doaj   +1 more source

Frustrated generations in Russian history, XX–XXI c. [PDF]

open access: yesСоциологический журнал, 2014
The thesis touches upon the issue of first persons of the state authorities influence to the processes of Russian socium generation dynamics forming.
V. M. Pashinsky
doaj   +1 more source

Efficacy and safety of Treamid in the rehabilitation of patients after COVID-19 pneumonia: a phase 2, randomized, double-blind, placebo-controlled trial

open access: yesJournal of Translational Medicine, 2022
Background Many patients who recovered from COVID are still suffering from pulmonary dysfunction that can be persistent even for months after infection. Therefore, treatment to prevent irreversible impairment of lung function is needed. Treamid (bisamide
Evgeny Bazdyrev   +7 more
doaj   +1 more source

Orbital Reversibility of Planar Vector Fields

open access: yesMathematics, 2020
In this work we use the normal form theory to establish an algorithm to determine if a planar vector field is orbitally reversible. In previous works only algorithms to determine the reversibility and conjugate reversibility have been given.
Antonio Algaba   +2 more
doaj   +1 more source

The Non-Uniform k-Center Problem [PDF]

open access: yes, 2016
In this paper, we introduce and study the Non-Uniform k-Center problem (NUkC). Given a finite metric space $(X,d)$ and a collection of balls of radii $\{r_1\geq \cdots \ge r_k\}$, the NUkC problem is to find a placement of their centers on the metric ...
Chakrabarty, Deeparnab   +2 more
core   +2 more sources

Generalized Center Problems with Outliers [PDF]

open access: yesACM Transactions on Algorithms, 2019
We study the ℱ-center problem with outliers: Given a metric space ( X , d ), a general down-closed family ℱ of subsets of X , and a parameter m , we need to locate a subset S ∈ ℱ of centers such that the maximum distance ...
Chakrabarty, Deeparnab   +1 more
openaire   +4 more sources

Linearizability problem of persistent centers

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2018
The concepts of persistent and weakly persistent centers were introduced in 2009 and the same concept was applied in the study of some families of differential equations in 2013.
Matej Mencinger   +3 more
doaj   +1 more source

The $p$-Center Problem in Tree Networks Revisited [PDF]

open access: yes, 2016
We present two improved algorithms for weighted discrete $p$-center problem for tree networks with $n$ vertices. One of our proposed algorithms runs in $O(n \log n + p \log^2 n \log(n/p))$ time.
Banik, Aritra   +4 more
core   +2 more sources

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