Temat: L21 - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: On L(2, 1)-Labelings of Oriented Graphs
Autorzy:: Colucci, Lucas
Győri, Ervin
Powiązania:: https://bibliotekanauki.pl/articles/32361754.pdf
Data publikacji:: 2022-02-01
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:: L (2,1)-labeling
directed graphs
Opis:: We extend a result of Griggs and Yeh about the maximum possible value of the L(2, 1)-labeling number of a graph in terms of its maximum degree to oriented graphs. We consider the problem both in the usual definition of the oriented L(2, 1)-labeling number and in some variants we introduce.
Źródło:: Discussiones Mathematicae Graph Theory; 2022, 42, 1; 39-46
2083-5892
Pojawia się w:: Discussiones Mathematicae Graph Theory
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Filozoficzne trudności teorii interesariuszy
Philosophical Difficulties of Stakeholder Theory
Autorzy:: Soin, Maciej
Powiązania:: https://bibliotekanauki.pl/articles/965198.pdf
Data publikacji:: 2016-09-15
Wydawca:: Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:: stakeholder theory
pragmatism
facts and values
Freeman
Rorty
A13
L21
M14
Opis:: Philosophical difficulties of stakeholder theory – which plays an important role in CSR and business ethics – are connected first of all with questions of its status and justification. What sense does stakeholder theory have: descriptive, instrumental or normative? And if normative, why then should executives worry about multiple stakeholder demands? It is well known that Freeman, one of the most important authors of stakeholder theory, deliberately disregarded these problems. In philosophical questions he invoked Rorty’s pragmatism, which in his opinion effectively undermined the “positivistic” dichotomy between facts and values, science and ethics, and enabled stakeholder theory to be understood at the same time as both descriptive and normative. The article presents some difficulties connected with this view, focusing on its dubious assumptions and unfavourable consequences. To the assumptions belongs a false dilemma taken from Rorty, which states that knowledge follows either a rule of representation or a rule of solidarity. One of the unfavourable consequences is the conclusion that stakeholder theory may be true only if its followers are able to force the stakeholders to accept its truthfulness. The main thesis of the article says that, as a result of pragmatic justification, stakeholder theory became a sort of arbitrary narration, which is unable to deal with its (empirical) misuses. However, a return to a more traditional view on facts and values enables us to appreciate the descriptive advantages of the theory and to identify difficulties connected with its normative layer. From this point of view, the attempt at a pragmatic interpretation of stakeholder theory was a misunderstanding that should be withdrawn from circulation.
Źródło:: Annales. Etyka w Życiu Gospodarczym; 2016, 19, 3
1899-2226
2353-4869
Pojawia się w:: Annales. Etyka w Życiu Gospodarczym
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Irreducible No-Hole L(2, 1)-Coloring of Edge-Multiplicity-Paths-Replacement Graph
Autorzy:: Mandal, Nibedita
Panigrahi, Pratima
Powiązania:: https://bibliotekanauki.pl/articles/31342318.pdf
Data publikacji:: 2018-05-01
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:: L (2,1)-coloring
no-hole coloring
irreducible coloring
subdivision graph
edge-multiplicity-paths-replacement graph
Opis:: An L(2, 1)-coloring (or labeling) of a simple connected graph G is a mapping f : V (G) → Z⁺ ∪ {0} such that |f(u)−f(v)| ≥ 2 for all edges uv of G, and |f(u) − f(v)| ≥ 1 if u and v are at distance two in G. The span of an L(2, 1)-coloring f, denoted by span(f), of G is max{f(v) : v ∈ V (G)}. The span of G, denoted by λ(G), is the minimum span of all possible L(2, 1)-colorings of G. For an L(2, 1)-coloring f of a graph G with span k, an integer l is a hole in f if l ∈ (0, k) and there is no vertex v in G such that f(v) = l. An L(2, 1)-coloring is a no-hole coloring if there is no hole in it, and is an irreducible coloring if color of none of the vertices in the graph can be decreased and yield another L(2, 1)-coloring of the same graph. An irreducible no-hole coloring, in short inh-coloring, of G is an L(2, 1)-coloring of G which is both irreducible and no-hole. For an inh-colorable graph G, the inh-span of G, denoted by λ_inh(G), is defined as λ_inh(G) = min{span(f) : f is an inh-coloring of G. Given a function h : E(G) → ℕ − {1}, and a positive integer r ≥ 2, the edge-multiplicity-paths-replacement graph G(rP_h) of G is the graph obtained by replacing every edge uv of G with r paths of length h(uv) each. In this paper we show that G(rP_h) is inh-colorable except possibly the cases h(e) ≥ 2 with equality for at least one but not for all edges e and (i) Δ(G) = 2, r = 2 or (ii) Δ (G) ≥ 3, 2 ≤ r ≤ 4. We find the exact value of λ_inh(G(rP_h)) in several cases and give upper bounds of the same in the remaining. Moreover, we find the value of λ(G(rP_h)) in most of the cases which were left by Lü and Sun in [L(2, 1)-labelings of the edge-multiplicity-paths-replacement of a graph, J. Comb. Optim. 31 (2016) 396–404].
Źródło:: Discussiones Mathematicae Graph Theory; 2018, 38, 2; 525-552
2083-5892
Pojawia się w:: Discussiones Mathematicae Graph Theory
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Pierwszy lot L-159T1
Autorzy:: Kiński, Andrzej.
Powiązania:: Nowa Technika Wojskowa 2007, nr 4, s. 56
Data publikacji:: 2007
Tematy:: L-159T (samolot) obloty Czechy
Samoloty szkolno-treningowe obloty Polska 21 w.
Opis:: Fot.
Dostawca treści:: Bibliografia CBW

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Skocz do pozycji: 5.

Tytuł:: Wystąpienie wicepremiera Wielkiej Brytanii Johna Prescotta.
Autorzy:: Prescott, John L.
Powiązania:: Dziennik Polski i Dziennik Żołnierza. Tydzień Polski (Londyn) 2004, nr 33, s. 6
Data publikacji:: 2004
Tematy:: Prescott John L. (1938- ) mowy
Powstanie warszawskie (1944)
Rocznice
Obchody
Mowy brytyjskie 21 w.
Opis:: Przemówienie wygłoszone w czasie uroczystości.
Fot.
Dostawca treści:: Bibliografia CBW