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Wyświetlanie 1-15 z 158
Tytuł:
Global alliances and independence in trees
Autorzy:
Chellali, Mustapha
Haynes, Teresa
Powiązania:
https://bibliotekanauki.pl/articles/743643.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
defensive alliance
offensive alliance
global alliance
domination
trees
independence number
Opis:
A global defensive (respectively, offensive) alliance in a graph G = (V,E) is a set of vertices S ⊆ V with the properties that every vertex in V-S has at least one neighbor in S, and for each vertex v in S (respectively, in V-S) at least half the vertices from the closed neighborhood of v are in S. These alliances are called strong if a strict majority of vertices from the closed neighborhood of v must be in S. For each kind of alliance, the associated parameter is the minimum cardinality of such an alliance. We determine relationships among these four parameters and the vertex independence number for trees.
Źródło:
Discussiones Mathematicae Graph Theory; 2007, 27, 1; 19-27
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectral study of alliances in graphs
Autorzy:
Rodríguez-Velazquez, Juan
Almira, Jose
Powiązania:
https://bibliotekanauki.pl/articles/743723.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
defensive alliance
offensive alliance
dual alliance
domination
spectral radius
graph eigenvalues.
Opis:
In this paper we obtain several tight bounds on different types of alliance numbers of a graph, namely (global) defensive alliance number, global offensive alliance number and global dual alliance number. In particular, we investigate the relationship between the alliance numbers of a graph and its algebraic connectivity, its spectral radius, and its Laplacian spectral radius.
Źródło:
Discussiones Mathematicae Graph Theory; 2007, 27, 1; 143-157
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A note on global alliances in trees
Autorzy:
Bouzefrane, M.
Chellali, M.
Powiązania:
https://bibliotekanauki.pl/articles/254977.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
global defensive alliance
global offensive alliance
domination
trees
Opis:
For a graph G = (V,E), a set S ⊆ V is a dominating set if every vertex in V - S has at least a neighbor in S. A dominating set S is a global offensive (respectively, defensive) alliance if for each vertex in V - S (respectively, in S) at least half the vertices from the closed neighborhood of v are in S. The domination number γ (G) is the minimum cardinality of a dominating set of G, and the global offensive alliance number γo(G) (respectively, global defensive alliance number γa(G)) is the minimum cardinality of a global offensive alliance (respectively, global deffensive alliance) of G. We show that if T is a tree of order n, then γo(T) ≤ 2γ (T) - 1 and if n ≥ 3, then γo(T) ≤ 3/2?a(T) ? 1. Moreover, all extremal trees attaining the first bound are characterized.
Źródło:
Opuscula Mathematica; 2011, 31, 2; 153-159
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Partner Capabilities and Alliance Time Frame: An Analysis of International Strategic Alliances from the CEE
Autorzy:
Jalali, S. Hossein
Powiązania:
https://bibliotekanauki.pl/articles/475173.pdf
Data publikacji:
2017
Wydawca:
Fundacja Upowszechniająca Wiedzę i Naukę Cognitione
Tematy:
strategic alliance
alliance time frame
partner capabilities
partner selection
Opis:
Partner selection is one of the most discussed issues in strategic alliances literature. However, the majority of research has typically focused on generic partner characteristics and presented conceptual models for alliance partner selection, addressing clan image but only limited pieces of the partner selection puzzle. Rooted in the resource-based view, this paper suggests that partner selection is contingent upon the intended time frame of strategic alliances and presents a new and intensive conceptual framework that examines the appropriate partner capability for strategic alliances, in the case of short/medium-term alliances and long-term ones. Based on empirical evidences from 736 alliances in the CEE region, the findings stress the differences between varied partner capabilities in short/medium-term and long-term alliances. Accordingly, the significance of technological capability increases with the number of year’s alliances endured. Moreover, the importance of market capability decreases significantly when alliances last for a longer time frame.
Źródło:
Journal of Entrepreneurship, Management and Innovation; 2017, 13, 2; 59-76
2299-7075
2299-7326
Pojawia się w:
Journal of Entrepreneurship, Management and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Offensive alliances in graphs
Autorzy:
Favaron, Odile
Fricke, Gerd
Goddard, Wayne
Hedetniemi, Sandra
Hedetniemi, Stephen
Kristiansen, Petter
Laskar, Renu
Skaggs, R.
Powiązania:
https://bibliotekanauki.pl/articles/744502.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
alliance
offensive
majority
graph
Opis:
A set S is an offensive alliance if for every vertex v in its boundary N(S)- S it holds that the majority of vertices in v's closed neighbourhood are in S. The offensive alliance number is the minimum cardinality of an offensive alliance. In this paper we explore the bounds on the offensive alliance and the strong offensive alliance numbers (where a strict majority is required). In particular, we show that the offensive alliance number is at most 2/3 the order and the strong offensive alliance number is at most 5/6 the order.
Źródło:
Discussiones Mathematicae Graph Theory; 2004, 24, 2; 263-275
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Connected global offensive k-alliances in graphs
Autorzy:
Volkmann, Lutz
Powiązania:
https://bibliotekanauki.pl/articles/743583.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
alliances in graphs
connected global offensive k-alliance
global offensive k-alliance
domination
Opis:
We consider finite graphs G with vertex set V(G). For a subset S ⊆ V(G), we define by G[S] the subgraph induced by S. By n(G) = |V(G) | and δ(G) we denote the order and the minimum degree of G, respectively. Let k be a positive integer. A subset S ⊆ V(G) is a connected global offensive k-alliance of the connected graph G, if G[S] is connected and |N(v) ∩ S | ≥ |N(v) -S | + k for every vertex v ∈ V(G) -S, where N(v) is the neighborhood of v. The connected global offensive k-alliance number $γₒ^{k,c}(G)$ is the minimum cardinality of a connected global offensive k-alliance in G.
In this paper we characterize connected graphs G with $γₒ^{k,c}(G) = n(G)$. In the case that δ(G) ≥ k ≥ 2, we also characterize the family of connected graphs G with $γₒ^{k,c}(G) = n(G) - 1$. Furthermore, we present different tight bounds of $γₒ^{k,c}(G)$.
Źródło:
Discussiones Mathematicae Graph Theory; 2011, 31, 4; 699-707
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Towards a structural understanding of powerbrokers in weak states: From militias to alliances
Autorzy:
Bruchmann, Sascha
Powiązania:
https://bibliotekanauki.pl/articles/1194379.pdf
Data publikacji:
2020
Wydawca:
Akademia Sztuki Wojennej
Tematy:
powerbroker
militia
balance of threat
alliance
anarchy
Opis:
This article aims to contribute to a theoretical understanding and discussion of conflict in weak states. More granular than one at the level of systemic phenomena, this analysis is focused on the actors, and the political structure in weak states. The article aims to improve on efforts to accurately describe these conflicts. After a theoretical introduction, the theorem on powerbroker systems will be applied on the case studies of Afghanistan, Lebanon and Mali. Building on this, the contours of the political system in each case will be highlighted by looking at the very origins of socio-political life. The working hypothesis is that powerbrokers, built on self-governing communities, ally and bandwagon according to Balance of Threat (BoT). This working hypothesis will be tested by examining a derived hypotheses per case study and identifying a) self-rule communities, b) the political-military nexus of powerbrokers within each system, and c) the behaviour of the related BoT alliance. Afghan, Lebanese and Malian powerbrokers all confirm the hypotheses. The powerbrokers originate in a context of self-governing communities trying to maintain their internal autonomy vis-a-vis a more centralised state and world system. During conflict, the communities band together against a perceived external threat, building neo-feudal political-military bodies. Pooling military resources under skilled leadership and privileged access to outside sponsors sparks the birth of a post-conflict politicalmilitary elite. It is beneficial to maintain powerbrokers as they are better suited to distribute resources through patronage at scale. Powerbroker alliances in weak states can be well explained by a theoretical approach based on balance of threat and more research is needed.
Źródło:
Security and Defence Quarterly; 2020, 31, 4; 53-75
2300-8741
2544-994X
Pojawia się w:
Security and Defence Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the global offensive alliance number of a tree
Autorzy:
Bouzefrane, M.
Chellali, M.
Powiązania:
https://bibliotekanauki.pl/articles/255263.pdf
Data publikacji:
2009
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
global offensive alliance number
domination number
trees
Opis:
For a graph G = (V, E), a set S ⊆ V is a dominating set if every vertex in V - S has at least a neighbor in S. A dominating set S is a global offensive alliance if for every vertex v in V - S, at least half of the vertices in its closed neighborhood are in S. The domination number ϒ(G) is the minimum cardinality of a dominating set of G and the global offensive alliance number ϒo(G) is the minimum cardinality of a global offensive alliance of G. We first show that every tree of order at least three with l leaves and s support vertices satisfies ϒo(T) ≥ (n - l + s + 1)/3 and we characterize extremal trees attaining this lower bound. Then we give a constructive characterization of trees with equal domination and global offensive alliance numbers.
Źródło:
Opuscula Mathematica; 2009, 29, 3; 223-228
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
POLITYKA BEZPIECZEŃSTWA WEWNĘTRZNEGO GABINETÓW Z UDZIAŁEM SOJUSZU LEWICY DEMOKRATYCZNEJ
INTERIOR SECURITY POLICY OF THE DEMOCRATIC LEFT ALLIANCE
Autorzy:
SPRENGEL, BOLESŁAW
Powiązania:
https://bibliotekanauki.pl/articles/513585.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
Interior security
security policy
Democratic Left Alliance
Opis:
The Democratic Left Alliance implemented an ambitious interior security policy in fighting with corruption and administrative modernization. This programme was only in part of a left-wing nature, but it was also the result of current needs. This program was controlled by journalists, who at times exaggerated its errors and failure.
Źródło:
Polityka i Społeczeństwo; 2014, 12, 3; 106-119 (14)
1732-9639
Pojawia się w:
Polityka i Społeczeństwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Countering China: India’s Pacific Predicament
Autorzy:
Bhattacharya, Subhadeep
Powiązania:
https://bibliotekanauki.pl/articles/2092254.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Warszawski. Wydział Nauk Politycznych i Studiów Międzynarodowych
Tematy:
Subhadeep Bhattacharya
Pacific
China
alliance
India
strategy
Opis:
The term 'Indo-Pacific', while mingling the Indian and the Pacific Ocean geopolitics in the 21st century, also attempts to integrate India with the Pacific region geopolitically. India has increasingly integrated economically with the Pacific world since the unveiling of her Look East Policy in 1994, rechristened as the Act East Policy in 2014. Growing hostility between the country and China compelled India to turn to the 'contain China' approach in the Pacific region, which is the cradle of Chinese naval prowess. However, India's deficient naval strength with its focus on the Indian Ocean and her land-oriented security priority amid Chinese and Pakistani threats are major handicaps to India's geo-strategic aspirations in the Pacific region vis-à-vis China's rise. Therefore, India, unable to pursue an offensive realist approach to contain China in the Pacific, has opted for a 'balance of threat' approach, forming alliances with the China-wary countries of the Pacific region, albeit only informally, in order to avoid Chinese retribution.
Źródło:
Stosunki Międzynarodowe - International Relations; 2020, 56, 2; 21-38
0209-0961
Pojawia się w:
Stosunki Międzynarodowe - International Relations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
President Barack Obama’s Policy Choices in NATO Rhetoric
Autorzy:
Rzepecka, Marta
Powiązania:
https://bibliotekanauki.pl/articles/514773.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Śląski. Wydział Nauk Społecznych
Tematy:
NATO
alliance
ideograph
Barack Obama
foreign policy
Opis:
This article uses Michael C. McGee’s concept of the ideograph to reflect Obama’s early foreign policy course regarding transatlantic relations. Specifically, the article draws on the ideograph “alliance” to demonstrate how the president redefined agents, acts, agencies, scenes, and purposes that fall within the rhetoric, thus informing how and why he changed US commitment to NATO. Analyzing Obama’s use of alliance serves to interpret his political choices as well as understand his ability to get the public to support them. By extension, a study of this nature offers a reading of the president’s perspective on US foreign policy and America’s global role.
Źródło:
Political Preferences; 2019, 25; 21-36
2449-9064
Pojawia się w:
Political Preferences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of the patient – physical therapist relationship on the outcomes of physical therapy: a narrative review of the literature
Wpływ relacji pacjent-fizjoterapeuta na efekty usprawniania – narracyjny przegląd literatury
Autorzy:
Mikołajewska, Emilia
Powiązania:
https://bibliotekanauki.pl/articles/1963077.pdf
Data publikacji:
2011
Wydawca:
Akademia Wychowania Fizycznego im. Bronisława Czecha w Krakowie
Tematy:
Rehabilitation
physical therapy
patient/physical therapist relationship
therapeutic alliance
working alliance
collaborative bound
rehabilitacja
fizjoterapia
współpraca pacjent-fizjoterapeuta
Opis:
Background: A holistic (biopsychosocial) model, widely accepted in contemporary medicine, provides a taking into account of both the physical, psychological and social aspects of a patient’s needs. Holistic rehabilitation approaches attempt to address both physical, cognitive and emotional disorders and problems. The relationship between the patient and physical therapists can be a key part of physical therapy and can be related to the outcome of physical therapy.Objective: Assessment of the influence of the patient-physical therapist relationship to the outcomes in physical therapy by a synthesizing of the published literature.Method: A rigorous search of four major databases was conducted using specified keywords and explicit inclusion and exclusion criteria.Representative literature was synthesized to indicate the scope and weight of current evidence. Conclusion: The relationship between the patient and physical therapists can have a positive influence on rehabilitation outcomes. More research is needed to determine important factors influencing a patient-physical therapists relationship, the strength of this association and guidances to clinical practice, especially within a multidisciplinary therapeutic team. Moreover there is urgent need to develop reliable instruments to measure these parameters in physical therapy settings. Because of the rapid development of telerehabilitation, the possible opportunities and dangers of a distance relationship should be assessed. The results of further research in this area can change contemporary therapy models and approaches within physical therapy, in particular those within outpatient, longterm and neurological rehabilitation.
Wstęp: Holistyczny (biopsychospołeczny) model, powszechnie akceptowany we wpółczesnej medycynie, wymaga uwzględnienia fizycznych, psychicznych, jak i społecznych potrzeb pacjenta. Rehabilitacja holistyczna próbuje odnosić się do fizycznych, poznawczych oraz emocjonalnych zaburzeń i problemów. Relacja pacjent-fizjoterapeuta może wpływać na wyniki fizjoterapii. Cel: Ocena wpływu relacji pacjent-fizjoterapeuta na efekty usprawniania poprzez syntezę dotychczas opublikowanej literatury. Metoda: Przeprowadzono przegląd piśmiennictwa recenzowanych badań indeksowanych w głównych bazach danych używając wyspecyfikowanych słów kluczowych oraz jednoznacznych kryteriów uwzględnienia i pominięcia. Dokonano syntezy reprezentatywnych pozycji piśmiennictwa w celu przedstawienia zakresu tematycznego oraz wagi aktualnych dowodów naukowych. Wnioski: Związek pomiędzy pacjentem a fizjoterapeutą może mieć pozytywny wpływ na wyniki rehabilitacji. Niezbędne są dalsze badania mające określić czynniki determinujące relację pacjent-fizjoterapeuta, jej siłę oraz wskazówki do praktyki klinicznej. Co więcej, istnieje pilna potrzeba opracowania wiarygodnych narzędzi pomiaru tych parametrów, ocenianych w warunkach miejsca pracy fizjoterapeuty. W związku z szybkim rozwojem telerehabilitacji zbadane powinny być także możliwe korzyści i zagrożenia w przypadku związków na odległość. Wyniki dalszych badań mogą zmienić obecne modele i podejścia stosowane w fizjoterapii, szczególnie w przypadku ambulatoryjnej i długotrwałej rehabilitacji neurologicznej.
Źródło:
Medical Rehabilitation; 2011, 15(3); 35-38
1427-9622
1896-3250
Pojawia się w:
Medical Rehabilitation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy Alliance and Coalitions that Can Be Formed by Alliance Agents
Autorzy:
Mashkov, Viktor
Smolarz, Andrzej
Lytvynenko, Volodymyr
Powiązania:
https://bibliotekanauki.pl/articles/27311942.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
alliance
coalition
multi-agent systems
modeling and simulation
Opis:
The paper deals with alliances and coalitions that can be formed by agents or entities. It is assumed that alliance agents cooperate and form coalitions for performing the tasks or missions. It is considered that alliance agents are unselfish. That is, they are more interested in achieving the common goal(s) than in getting personal benefits. In the paper, the concept of fuzzy alliance was introduced. A fuzzy alliance is considered as generalization of traditional alliance allowing agents to decide on the capabilities that their agents can and wanted deliver to coalition. Coalitions that can be formed by fuzzy alliance agents were considered. The definition of the “best” coalition was explained. The method of how to find the “best” coalition among all possible coalitions was suggested and verified by computer simulation.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 4; 713--718
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reconfiguration of Geopolitical Strategies in Trump’s Era: The Impact of American Political Leadership’s Idiosyncrasies on the Traditional Transatlantic Relations
Autorzy:
Ciot, Melania-Gabriela
Ghidiu, Iulia-Anamaria
Powiązania:
https://bibliotekanauki.pl/articles/1038449.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Warszawski. Centrum Europejskie
Tematy:
Donald Trump;
Idiosyncratic Leadership;
Transatlantic Alliance;
Geopolitical Alternatives;
Opis:
The International System is traversing a challenging stage in its evolution. The United States should carefully consider the risks of an idiosyncratic leadership and closely work with their European partners, securing a world order based on the norms of multilateralism and democracy. Still, the US President Donald Trump unveils an approach based on emotional and synchronous elements. As a matter of consequence, the EU is considering other geopolitical alternatives to accomplish its goals and deliver the best outcome to the people it serves and for global prosperity. The paper investigates the very specifi c psychological factors infl uencing Trumpian political thinking and justifying his corresponding foreign policy decisionmaking processes, in the current transatlantic environment. By contextual examples, the analysis reveals the sensitivities and flaws in applying a subjective, belief-based approach of international (bilateral) relations. We put things into a broader perspective, by analysing the implications of such political behaviour patterns for the international liberal order, in the circumstances of the more and more prominent geopolitical triangle: theEU–China–the US.
Źródło:
Studia Europejskie - Studies in European Affairs; 2020, 24, 2; 25-42
1428-149X
2719-3780
Pojawia się w:
Studia Europejskie - Studies in European Affairs
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Global offensive k-alliance in bipartite graphs
Autorzy:
Chellali, M.
Volkmann, L.
Powiązania:
https://bibliotekanauki.pl/articles/255370.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
global offensive k-alliance number
bipartite graphs
trees
Opis:
Let k ≥ 0 be an integer. A set S of vertices of a graph G = (V (G), E(G)) is called a global offensive k-alliance if /N(v) ∩ S/ ≥ /N(v) - S/ + k for every v ∈ V (G) - S, where 0 ≤ k Δ and Δ is the maximum degree of G. The global offensive k-alliance number [formula] is the minimum cardinality of a global offensive k-alliance in G. We show that for every bipartite graph G and every integer k ≥ 2, [formula], where Lk(G) is the set of vertices of degree at most k - 1. Moreover, extremal trees attaining this upper bound are characterized.
Źródło:
Opuscula Mathematica; 2012, 32, 1; 83-89
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 158

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