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    Wyświetlanie 1-6 z 6
    Tytuł:
    Toehold purchase problem: a comparative analysis of two strategies
    Autorzy:
    Banakh, I.
    Banakh, T.
    Vovk, M.
    Trisch, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/411444.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Oddział w Lublinie PAN
    Tematy:
    toehold
    tender offer
    mixed strategy
    takeover
    beta function
    Opis:
    Toehold purchase, defined here as purchase of one share in a firm by an investor preparing a tender offer to acquire majority of shares in it, reduces by one the number of shares this investor needs for majority. In the paper we construct mathematical models for the toehold and no-toehold strategies and compare the expected profits of the investor and the probabilities of takeover the firm in both strategies. It turns out that the expected profits of the investor in both strategies coincide. On the other hand, the probability of takeover the firm using the toehold strategy is considerably higher comparing to the no-toehold strategy. In the analysis of the models we apply the apparatus of incomplete Beta functions and some refined bounds for central binomial coefficients.
    Źródło:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2015, 4, 1; 3-10
    2084-5715
    Pojawia się w:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Random priority two-person full-information best choice problem with imperfect observation
    Autorzy:
    Porosiński, Zdzisław
    Szajowski, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/1208161.pdf
    Data publikacji:
    2000
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Tematy:
    mixed strategy
    best choice problem
    zero-sum game
    stopping game
    Opis:
    The following version of the two-player best choice problem is considered. Two players observe a sequence of i.i.d. random variables with a known continuous distribution. The random variables cannot be perfectly observed. Each time a random variable is sampled, the sampler is only informed whether it is greater than or less than some level specified by him. The aim of the players is to choose the best observation in the sequence (the maximal one). Each player can accept at most one realization of the process. If both want to accept the same observation then a random assignment mechanism is used. The zero-sum game approach is adopted. The normal form of the game is derived. It is shown that in the fixed horizon case the game has a solution in pure strategies whereas in the random horizon case with a geometric number of observations one player has a pure strategy and the other one has a mixed strategy from two pure strategies. The asymptotic behaviour of the solution is also studied.
    Źródło:
    Applicationes Mathematicae; 2000, 27, 3; 251-263
    1233-7234
    Pojawia się w:
    Applicationes Mathematicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the one-shot two-person zero-sum game in football from a penalty kicker’s perspective
    Autorzy:
    Ekhosuehi, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/406567.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    linear programming
    mixed strategy
    penalty
    kick
    strategic game
    two-person zero-sum game
    Opis:
    A penalty kicker’s problem in football has been modelled. The study took into consideration different directions in which the ball can be struck and goalkeepers’ success at defending shots. The strategic form of the game that can be used to predict how the kicker should optimally randomise his strategies has been modelled as a non-linear game-theoretic problem from a professional kicker’s viewpoint. The equilibrium of the game (i.e., the pair of mutually optimal mixed strategies) was obtained from the game-theoretic problem by reducing it to a linear programming problem and the two-phase simplex method was adopted to solve this problem. The optimal solution to the game indicates that the kicker never chooses to kick the ball off target, to the goalpost or to the crossbar, but rather chooses to kick the ball in the opposite direction to the one where the goalkeeper is most likely to successfully defend from past history.
    Źródło:
    Operations Research and Decisions; 2018, 28, 3; 17-27
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jak badać szkołę? – przykłady zastosowania badań jakościowych i mieszanych w analizie i interpretacji rzeczywistości szkolnej na tle dyskusji dotyczącej strategii badawczych
    How to make research in school? - some examples off applying qualitative and mixed research strategies in analyzing of school environment on the basis of discussion about research strategies
    Autorzy:
    Karkowska, Magda
    Powiązania:
    https://bibliotekanauki.pl/articles/433895.pdf
    Data publikacji:
    2019-09-08
    Wydawca:
    Polska Akademia Nauk. Komitet Nauk Pedagogicznych PAN
    Tematy:
    methodology
    mixed research
    qualitative research
    quantitative research
    paradigm
    school
    strategy
    Opis:
    Content presented in this article is focused on the reflection of the factors determining the choice of research strategy in the analysis of school environment. Some of the elements to be examined refer to the structural and functional model of a school, others to the interpretative model. As the assumptions about the nature of school reality are completely different within these models, depending on how the school is perceived, there are different ways of designing and conducting research. It is arguable whether derived from a structural and functional model of school (the school as an environment education, positivist paradigm) only quantitative analysis are justified, and after the adoption of the interactive model (the school as a system of socio-cultural, interpretative paradigm) only qualitative research should be conducted? The choice, at the first glance, quite obvious is a matter of more complex, because the strategy of research procedure also depends on some another factors: the order in which the study is carried out, the subject and the scope of the analysis, the experience of the researcher and to some extent, to the fact who are beneficients of the results. In the first part of this article author is trying to deal with these relationships, in the second part, there are presented a few examples of analysis when using qualitative methods or strategies. Most of them are realized within the model of so-called mixed research. They are only some examples presented and they should be understood as exemplifications, not in –depth exploration. Described problems might be explained and explored in the future using other methods and techniques, as well as combining them.
    Źródło:
    Rocznik Pedagogiczny; 2018, 41; 193-212
    0137-9585
    Pojawia się w:
    Rocznik Pedagogiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Past its expiry date? The SILL in modern mixed-methods strategy research
    Autorzy:
    Amerstorfer, Carmen M.
    Powiązania:
    https://bibliotekanauki.pl/articles/781037.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    Strategy Inventory for Language Learning (SILL)
    language learning strategies
    mixed-methods research
    learner preferences
    Opis:
    Has the Strategy Inventory for Language Learning (SILL) passed its expiry date? The SILL (Oxford, 1990) was designed as a self-evaluation tool to measure the frequency of language learning strategies used by foreign and second language (L2) learners. With simple mathematics, learners can analyze their strategy preferences overall and in six categories (i.e., memory, cognitive, compensation, metacognitive, affective, and social strategies). Diverging from its original purpose, the SILL became the most popular instrument in LLS research, which brought widespread acclaim but also criticism. This article explains what makes the SILL an extraordinary tool for learners, teachers, and researchers and how it can be adapted to suit specific contexts and the demands of a modern world. An example of how the SILL can be integrated into mixed-methods research demonstrates how the instrument can fulfil additional purposes to those originally intended. Despite its naturally quantitative orientation, the SILL contributed to the acquisition of rich qualitative information, which enabled a holistic view of five individual L2 learners. In addition to new insights about strategic L2 learning, the study attests that the SILL has not expired yet, but perhaps needs a modern touch, for instance, in the form of adaptation or combination with other research methods and the inclusion of strategies for learning language with technology.
    Źródło:
    Studies in Second Language Learning and Teaching; 2018, 8, 2; 497-523
    2083-5205
    2084-1965
    Pojawia się w:
    Studies in Second Language Learning and Teaching
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Type of marriage of parents as the factor of adaptation of a child in poli-ethnic society
    Autorzy:
    Abramova, Mariya Alekseevna
    Goncharova, Galina Savitovna
    Powiązania:
    https://bibliotekanauki.pl/articles/1178433.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Kazimierza Wielkiego w Bydgoszczy
    Tematy:
    acculturation strategy
    ethnically homogenous marriage
    ethnically mixed marriage
    self-identification of young people
    type of marriage
    Opis:
    This article is based on the material of the specific socio-psychological research held in Yakutia in 2006-2009. The influence of one of the most important factors in the adaptation process is analyzed. In this article one of the most important factors is the family, the type of marriage of parents (ethnically homogenous and ethnically mixed marriage) which influences the acculturation strategies of a child, his migration intentions, ethnic and civil self-identification, as well as his level of psychological adaptation. The questions of historical and modernprerequisites for the formation of positive attitude of the society towards the phenomenon of ethnically mixed families in the North are also considered here.
    Źródło:
    Polskie Forum Psychologiczne; 2013, XVIII, 3; 267-283
    1642-1043
    Pojawia się w:
    Polskie Forum Psychologiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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