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    Wyświetlanie 1-9 z 9
    Tytuł:
    On Public Values and Power Indices
    Autorzy:
    Bertini, C.
    Stach, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/375888.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    cooperative game theory
    simple game
    values
    public values
    power indices
    public power indices
    Opis:
    In this paper, we analyze some values and power indices from a different point of view that are well-defined in the social context where the goods are public. In particular, we consider the Public Good index (Holler, 1982), the Public Good value (Holler and Li, 1995), the Public Help index (Bertini et al., 2008), the König and Bräuninger index (1998) also called the Zipke index (Nevison et al., 1978), and the Rae index (1969). The aims of this paper are: to propose an extension of the Public Help index to cooperative games; to introduce a new power index with its extension to a game value; and to provide some characterizations of the new index and values.
    Źródło:
    Decision Making in Manufacturing and Services; 2015, 9, 1; 9-25
    1896-8325
    2300-7087
    Pojawia się w:
    Decision Making in Manufacturing and Services
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Indirect control and power
    Autorzy:
    Bertini, C.
    Mercik, J.
    Stach, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/406544.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    game theory
    indirect control
    corporations
    power indices
    Opis:
    To determine who has the power within a stock corporate company can be a quite complex prob-lem, especially when control is achieved through alliances between shareholders. This problem arises especially in cases of indirect control of corporations, that is, in situations involving shareholders and companies with cross-shareholdings. The first to solve the problem of measuring power in the case of indirect share control were Gianfranco Gambarelli and Guillermo Owen in [10]. In the following years, numerous other models were introduced. In this paper, we critically examine the models of: Gambarelli and Owen, Denti and Prati, Crama and Leruth, Karos and Peters, as well as Mercik and Lobos, taking into account two well-known, illustrative examples, one with an acyclic corporate structure and the other with a cyclic structure.
    Źródło:
    Operations Research and Decisions; 2016, 26, 2; 7-30
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement of control power in corporate networks
    Autorzy:
    Stach, Izabella
    Mercik, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/2099514.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    corporate networks
    indirect control
    simple games
    power indices
    Opis:
    This paper discusses some game-theoretical methods for measuring indirect control in complex corporate shareholding networks. The methods use power indices to estimate the direct and indirect control in shareholding structures. Some of these methods only estimate the control power of investors (firms without shareholdings), and only a few measure the control power of all firms involved in shareholding networks (which means investors and stock companies). None of them takes measuring the importance of mutual connections (edges in the networks) into consideration; thus we focus in particular on an extension of these methods in this paper to measure both the control-power of the firms involved in complex shareholding structures (represented by nodes in networks) and the importance (power) of linkages between the firms as elements of a whole corporate shareholding network. More precisely, we apply our approaches to a theoretical example of a corporate network. Moreover, we continue the considerations about reasonable properties for indirect control measurement. Some ideas of new properties are proposed. The paper also provides a brief review of the literature concerning the topic.
    Źródło:
    Operations Research and Decisions; 2021, 31, 1; 98--121
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    National and ideological influence in the European Parliament
    Autorzy:
    Turnovec, F.
    Mercik, J. W.
    Mazurkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/970600.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    a priori voting power
    European Parliament
    European political parties
    power indices
    Shapley-Shubik power index
    Opis:
    In this paper we address the following question: Taking as decisional units national chapters of European political parties, is there a difference between a priori voting power of national groups in the case of "national" coordination of voting and in the case of "partisan" coordination of voting? By coordination of voting we mean two step process: in the first step there is an internal voting in the groups of units (national or partisan), in the second step there is a voting of aggregated groups (European political parties or national representations) in the EP. In both cases the voting has an ideological dimension (elementary unit is a party group), difference is only in dimension of aggregation (European parties versus national representations). Power indices methodology is used to evaluate voting power of national party groups in the cases of partisan and national coordination of voting behaviour.
    Źródło:
    Control and Cybernetics; 2008, 37, 3; 585-606
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measuring a Collectivity’s Power to Act in Proper, Simple Voting Games : Why We Should Resist the Readiness to Use the Coleman Index
    Autorzy:
    Kleinowski, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/2044031.pdf
    Data publikacji:
    2015-06-30
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    the power of a collectivity to act
    voting power
    power of a voting body
    power indices
    Opis:
    James S. Coleman proposed the power of a collectivity to act as a measure of the ease with which the individual interests of one member can be transformed into the collective action of a voting body, or into decisions being undertaken by that body which go against the interests of the voters. It was also to be applied in simple voting games, for which the vote threshold was set at a lower level than the majority of votes. Coleman based his model for determining the power of a collectivity to act on the classical definition of probability. In practice, the index is calculated as a quotient of the number of winning coalitions and of all possible coalitions which can be formed by the players – under the existing voting rule. The central hypothesis of the article has as its premise that in proper, simple nperson voting games the Coleman index does not determine passage probability, but only the probability of drawing a winning coalition from the set of all possible combinations of members of the voting body. A new index has also been proposed which should serve to determine a collectivity’s power to act.
    Źródło:
    Kultura i Edukacja; 2015, 2(108); 9-29
    1230-266X
    Pojawia się w:
    Kultura i Edukacja
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computing power indices for weighted voting games via dynamic programming
    Autorzy:
    Staudacher, Jochen
    Kóczy, László Á.
    Stach, Izabella
    Filipp, Jan
    Kramer, Marcus
    Noffke, Till
    Olsson, Linuss
    Pichler, Jonas
    Singer, Tobias
    Powiązania:
    https://bibliotekanauki.pl/articles/2099634.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    cooperative game theory
    power indices
    weighted voting games
    dynamic programming
    minimal winning coalitions
    Opis:
    We study the efficient computation of power indices for weighted voting games using the paradigm of dynamic programming. We survey the state-of-the-art algorithms for computing the Banzhaf and Shapley–Shubik indices and point out how these approaches carry over to related power indices. Within a unified framework, we present new efficient algorithms for the Public Good index and a recently proposed power index based on minimal winning coalitions of the smallest size, as well as a very first method for computing the Johnston indices for weighted voting games efficiently. We introduce a software package providing fast C++ implementations of all the power indices mentioned in this article, discuss computing times, as well as storage requirements.
    Źródło:
    Operations Research and Decisions; 2021, 31, 2; 123--145
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Indirect Control of Corporations: Analysis and Simulations
    Autorzy:
    Stach, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/375977.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    corporate shareholding analysis
    cooperative game theory
    direct and indirect control
    financial and economic modeling
    power indices
    Opis:
    This paper is devoted to the concept of indirect control in corporate shareholding networks. This topic is important in financial economics. Since shareholding size does not actually reflect an investor’s power-control in corporate shareholding networks, diverse approaches to measuring the control-power of investors has been proposed. We focus in particular on a game-theoretical approach; specifically the model of Denti and Prati (2001) and its implementation to control sharing analysis and simulation in shareholding networks thanks to the computer program „Control Sharing Simulation”.
    Źródło:
    Decision Making in Manufacturing and Services; 2017, 11, 1-2; 31-51
    1896-8325
    2300-7087
    Pojawia się w:
    Decision Making in Manufacturing and Services
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reliability of Power Units in Poland and the World
    Niezawodność bloków energetycznych w Polsce i na świecie
    Autorzy:
    Paska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/397418.pdf
    Data publikacji:
    2015
    Wydawca:
    ENERGA
    Tematy:
    reliability
    reliability indices
    power unit
    niezawodność
    blok energetyczny
    wskaźnik niezawodności
    Opis:
    One of a  power system’s subsystems is the generation subsystem consisting of power units, the reliability of which to  a  large extent determines the reliability of the power system and electricity supply to  consumers. This paper presents definitions of the basic indices of power unit reliability used in Poland and in the world. They are compared and analysed on the basis of data published by the Energy Market Agency (Poland), NERC (North American Electric Reliability Corporation – USA), and WEC (World Energy Council). Deficiencies and the lack of a unified national system for collecting and processing electric power equipment unavailability data are also indicated.
    Jednym z podsystemów systemu elektroenergetycznego jest podsystem wytwórczy, złożony z bloków energetycznych, których niezawodność determinuje w dużym stopniu niezawodność systemu elektroenergetycznego i pewność zasilania energią elektryczną odbiorców. W artykule przedstawiono definicje podstawowych wskaźników niezawodności bloków energetycznych, stosowanych w Polsce i na świecie. Dokonano porównania i analizy ich wartości na podstawie danych publikowanych przez Agencję Rynku Energii (Polska), NERC (Północnoamerykańska Korporacja ds. Niezawodności w Elektroenergetyce – USA) i WEC (Światowa Rada Energetyczna). Zasygnalizowano również niedostatki i brak jednolitego krajowego systemu zbierania i przetwarzania danych o awaryjności urządzeń elektroenergetycznych.
    Źródło:
    Acta Energetica; 2015, 3; 59-70
    2300-3022
    Pojawia się w:
    Acta Energetica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The new approach to hybrid Kalman filtering, based on the changed order of filters for state estimation of dynamical systems
    Autorzy:
    Michalski, Jacek
    Kozierski, Piotr
    Ziętkiewicz, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/378067.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    state estimation
    Kalman filtering
    particle filtering
    power system
    quality indices
    Opis:
    The paper presents a new approach to Hybrid Kalman filtering, composed of Extended Kalman Filter and Unscented Kalman Filter. In known algorithms, the Unscented Kalman Filter algorithm is used as first and the result of this is given as an input to the Extended Kalman Filter. The authors checked modified Hybrid Kalman Filter with changed order of filters using theoretical object, which was created on the basis of power system. Besides traditional method, the modification of Hybrid Kalman Particle Filter was evaluated too. Results were compared with Extended Kalman Filter, Unscented Kalman Filter and Bootstrap Particle Filter. For particle filters the authors compared method estimation qualities for a different number of particles. The estimation quality was evaluated by three quality indices. Based on the obtained results, one can see that the changed order of methods in Hybrid Kalman filter can improve estimation quality.
    Źródło:
    Poznan University of Technology Academic Journals. Electrical Engineering; 2019, 97; 181-190
    1897-0737
    Pojawia się w:
    Poznan University of Technology Academic Journals. Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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