Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Tran Hoai Ngoc Nhan"'
Publikováno v:
Opuscula Mathematica, Vol 44, Iss 1, Pp 135-149 (2023)
The median location problem concerns finding locations of one or several new facilities that minimize the overall weighted distances from the existing to the new facilities. We address the problem of locating one new facility with a radius \(r\) on n
Externí odkaz:
https://doaj.org/article/ecbb54fe2745430fa8e4a59e4d8abc83
Autor:
Tran Hoai Ngoc Nhan1 tranhoaingocnhan@gmail.com, Nguyen Thanh Hung2 nthung@ctu.edu.vn, Kien Trung Nguyen2 trungkien@ctu.edu.vn
Publikováno v:
Opuscula Mathematica. 2024, Vol. 44 Issue 1, p135-149. 15p.
Publikováno v:
Asia-Pacific Journal of Operational Research.
The classical reverse 1-median problem on trees is to adjust the edge lengths within a budget so as to reduce the 1-median function at a predetermined vertex as much as possible. This paper concerns the corresponding problem with uncertain vertex wei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::606fee4820e2b52f6db5efbc4640de82
https://doi.org/10.1142/s0217595922500336
https://doi.org/10.1142/s0217595922500336
Publikováno v:
Yugoslav Journal of Operations Research; 2023, Vol. 33 Issue 2, p309-322, 14p
Publikováno v:
Journal of the Operations Research Society of China. 9:713-721
We address a variant of the continuous knapsack problem, where capacities regarding costs of items are given into account. We prove that the problem is NP-complete although the classical continuous knapsack problem is solvable in linear time. For the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c94ecaa7cf8eecc67a596e9d9fba4a85
https://doi.org/10.1007/s40305-020-00298-6
https://doi.org/10.1007/s40305-020-00298-6
Publikováno v:
Communications in Algebra. 48:833-846
The aim of the present paper is to introduce and study the dual concepts of weakly automorphism invariant modules and essential tightness. These notions are non-trivial generalizations of both weakly projectivity, dual automorphism invariant property
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c86995f9f50b10ea10cb57f40b0d730
https://doi.org/10.1080/00927872.2019.1662915
https://doi.org/10.1080/00927872.2019.1662915
Publikováno v:
Discrete Mathematics, Algorithms and Applications. 14
We address in this paper the connected [Formula: see text]-median problem on complete multi-layered graphs. We first solve the corresponding 1-median problem on the underlying graph in linear time based on the structure of the induced path. For [Form
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4e51285b721a77b11d58e0c8b03dfc1
https://doi.org/10.1142/s1793830921501184
https://doi.org/10.1142/s1793830921501184
Akademický článek
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In this paper, we investigate some properties of SIP, SSP and CS-Rickart modules. We give equivalent conditions for SIP and SSP modules; establish connections between the class of semisimple artinian rings and the class of SIP rings. It shows that R
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68e58bfe3c377a9b6d4bd226672afc46
https://openrepository.ru/article?id=683356
https://openrepository.ru/article?id=683356
Akademický článek
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