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Wyszukujesz frazę "equilibrium theory" wg kryterium: Temat


Tytuł:
Ustalona a preferowana kolejność ruchów w grze pojedynczej
Fixed and preferable order of moves in a single-game
Autorzy:
Laskowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/317570.pdf
Data publikacji:
2007
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
teoria gier
gry rynkowe
kolejność ruchów w grze
równowaga Nasha
gry Stackelberga
gra pojedyncza
gra podwójna
game theory
market games
order of market player movement
Nash equilibrium
Stackelberg games
single game
double game
Opis:
Przeanalizowano dwuosobowe gry o sumie niezerowej pod kątem preferowanej dla graczy kolejności ruchów, ich związku z faktem istnienia lub nieistnienia równowagi Nasha, związku z modelami gry Stackelberga oraz konieczności wykonywania ruchów w określonej kolejności.
An analyses of two-person non-zero sum games in the context of preferable order of the players moves, and their relationship with the fact of existing or non existing Nash equilibrium, with the models of Stackelberg games and with the necessity of making a move in a given order was made.
Źródło:
Telekomunikacja i Techniki Informacyjne; 2007, 3-4; 10-29
1640-1549
1899-8933
Pojawia się w:
Telekomunikacja i Techniki Informacyjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
USEFUL GOVERNMENT EXPENDITURE INFLUENCE ON THE SHADOW ECONOMY
Autorzy:
Malaczewska, Paulina
Powiązania:
https://bibliotekanauki.pl/articles/452927.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
shadow economy
useful government expenditure
game theory
Nash equilibrium
Opis:
This paper contains the attempt to describe the phenomenon of shadow economy as a zero-sum non-cooperative, normal form game between households and the government. In the model government spending can be treated as a government consumption or as an expenses that contribute to increased social welfare and for the provision of public goods and services. We conduct sensitivity analysis of Nash equilibrium in models with two different types of government expenditure and examine whether proposed models indicate a various mechanisms and determinants of the undeclared economic activity.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2013, 14, 2; 61-69
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Minority Game and Quantum Game Theory
Gra Mniejszościowa I Kwantowa Teoria Gier
Autorzy:
Bolonek, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/906291.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
minority game
quantum game theory
Nash equilibrium
Opis:
Artykuł zawiera propozycje procedur kwantowania gier dobrze znanych w klasycznej teorii gier. Przedstawiono proste modele gier kwantowych. Jako pierwszy został omówiony dylemat więźnia zarówno w wersji klasycznej jak i kwantowej, który ma wiele praktycznych zastosowań w ekonomii, jednym z przykładów są oszustwa w porozumieniach kartelowych. Kolejnym modelem gry kwantowej jest kwantowa gra rynkowa opisana za pomocą kwantowego oscylatora harmonicznego. Jako ostatni został omówiony model kwantowej gry mniejszościowej.
This paper builds up on proposed convincing procedures telling how to quantize well-known games from the classical game theory. The thesis introduces some simple models of quantum games. At first, the prisoners’ dilemma in classical and quantum version is described. This simple model has many practical applications in economics, one example being frauds in cartel agreements. The next model of quantum game is the quantum market game, described with the help of the quantum harmonic oscillator. It is known that quantum algorithms may be thought of as the games between classical and quantum agents; therefore, as the last example the quantum minority game is introduced.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2009, 228
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Development of Alternative Strategies for the Issuers of Unit-Linked Life Insurance Contracts with Investment Guarantees
Rozwój alternatywnych strategii dla emitentów polis ubezpieczeniowych typu unit-linked z gwarancją inwestycyji
Autorzy:
Ciumas, Cristina
Chis, Diana-Maria
Corovei, Emilia-Anuta
Powiązania:
https://bibliotekanauki.pl/articles/596475.pdf
Data publikacji:
2016
Wydawca:
Łódzkie Towarzystwo Naukowe
Tematy:
unit-linked products
investment guarantees
Black–Scholes–Merton Model
theory of options
equilibrium prices
produkty unit-linked
gwarancja inwestycji
model Blacka–Scholesa–Mertona
teoria opcji
cena równowagi rynkowej
Opis:
One of the consequences of the financial markets’ development, and implicitly of insurance markets, has been the emergence of unit-linked life insurance products in the last two decades. Unit-linked contracts are life insurance policies with investment components. Due to the financial instability caused by the Global Crisis and the amplification of market competitiveness, insurers from international markets have started to incorporate guarantees in unit-linked products. So a unit-linked life insurance policy with an asset value guarantee is an insurance policy whose benefit payable on death or at maturity consists of the greater of some guaranteed amount and the value of the units from the investment funds. One of the most challenging issues concerns the pricing of minimum death benefit and maturity benefit guarantees and the establishment of proper reserves for these guarantees. Although the Romanian legislation authorizes the Romanian insurers to offer unitlinked contracts without investment guarantees, this research provides a proposal of a theoretical and empirical basis for pricing and assessing unit-linked insurance contracts with incorporated investment guarantees. Therefore the model provides a theoretical framework for valuing these investment guarantees. Our findings reveal that the investment policy is optimal in that it provides the Romanian insurance company with a hedging strategy against the investment risk connected with these benefit guarantees.
Jedną z konsekwencji rozwoju rynków finansowych oraz pośrednio rynku ubezpieczeń było pojawienie się w ciągu ostatnich dwóch dekad ubezpieczeń na życie typu unit-linked. Umowy unit-linked są polisami na życie z komponentem inwestycyjnym. Ze względu na niestabilność finansową spowodowaną światowym kryzysem i wzmocnienie konkurencji rynkowej, ubezpieczyciele na rynkach międzynarodowych załączają gwarancje typu unit-linked do oferowanych produktów. Polisa unit-linked z gwarancją wkładu jest polisą, w której świadczenie na wypadek śmierci lub terminu zapadalności składa się z kwoty większej niż gwarantowana oraz wartości jednostek uczestnictwa w funduszach inwestycyjnych. Kwestię problematyczną stanowi minimalna wysokość świadczenia gwarantowanego na wypadek śmierci lub terminu zapadalności oraz ustanowienie odpowiednich rezerw dla tych gwarancji. Chociaż rumuńskie ustawodawstwo umożliwia rumuńskim ubezpieczycielom oferowanie umów typu unit-linked bez gwarancji inwestycyjnych, niniejszy artykuł przedstawia propozycję wyceny polis ubezpieczeniowych unit-linked na gruncie teorii i badań empirycznych. Zaproponowany model uwzględnia ramy teoretyczne dla wyceny wartości gwarancji. Wyniki wskazują, że polityka inwestycyjna w zakresie tego rodzaju produktów jest zoptymalizowana i pozwala rumuńskim ubezpieczycielom na ograniczenie ryzyka inwestycyjnego związanego z gwarantowaniem świadczeń.
Źródło:
Studia Prawno-Ekonomiczne; 2016, XCIX; 187-205
0081-6841
Pojawia się w:
Studia Prawno-Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Balance Paradox of Management
Autorzy:
Gospodarek, Tadeusz
Powiązania:
https://bibliotekanauki.pl/articles/14473175.pdf
Data publikacji:
2018-06-23
Wydawca:
Wyższa Szkoła Bankowa we Wrocławiu
Tematy:
General economic equilibrium
rationally bounded decisions
paradox of management
micro/macro balance
management theory.
Opis:
Aim: There exists an inequilibrium between the available quantity of goods and the level of consumption resulting in local economic polarisations and asymmetric capital concentrations. Replacements of real money with derivative instruments cause strong perturbations on capital markets. Consumer preferences change towards the maximization of the utility of the used capital. The above observations are a basis for the hypothesis that managers, in general, prefer to maximize the momentum profit regardless of the risk of losing the stability of macroeconomic systems. Design/Research method: It is heuristic about the objective function of an organization based on observations, that there are two excluding tendencies in formulating goals: to maximize the profit (using all possible opportunities) and simultaneously to achieve stability in the long run (keeping the micro-macro balance). Conclusions/findings: Managements cause deviations from the micro-macro balance, and at the same time trying to keep this balance. This leads to the following paradox of management (the balance dilemma of management): Managers always try to maximize opportune profits, regardless of future benefits that may be derived from keeping the equilibrium. And conversely, rational long-term stability suggests postponing most opportunities and keeping external boundaries (e.g. realizing sustainable development). However, managers’ temporary preferences lead to an increasing number of unbalanced interactions between organizations and their surroundings, up to the critical point when some catastrophic economic processes may take place. Originality/value of the article: Original heuristics based on the observations of some micro-macro economic balance relations in business practice. Implications of the research: One more paradox in the theory of management have been presented. It is important for base statements of the theory of organizational bahaviors consistency and inferring would be more accurate. JEL: L2, M21, D5, F41
Źródło:
Central European Review of Economics and Management; 2018, 2, 2; 143-157
2543-9472
Pojawia się w:
Central European Review of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strategic option pricing
Autorzy:
Bieta, Volker
Broll, Udo
Siebe, Wilfried
Powiązania:
https://bibliotekanauki.pl/articles/1837957.pdf
Data publikacji:
2020-09-30
Wydawca:
Uniwersytet Ekonomiczny w Poznaniu
Tematy:
option pricing
game theory
Nash equilibrium
Opis:
In this paper an extension of the well-known binomial approach to option pricing is presented. The classical question is: What is the price of an option on the risky asset? The traditional answer is obtained with the help of a replicating portfolio by ruling out arbitrage. Instead a two-person game from the Nash equilibrium of which the option price can be derived is formulated. Consequently both the underlying asset’s price at expiration and the price of the option on this asset are endogenously determined. The option price derived this way turns out, however, to be identical to the classical no-arbitrage option price of the binomial model if the expiration-date prices of the underlying asset and the corresponding risk-neutral probability are properly adjusted according to the Nash equilibrium data of the game.
Źródło:
Economics and Business Review; 2020, 6, 3; 118-129
2392-1641
Pojawia się w:
Economics and Business Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stackelberg Security Games: Models, Applications and Computational Aspects
Autorzy:
Wilczyński, A.
Jakóbik, A.
Kołodziej, J.
Powiązania:
https://bibliotekanauki.pl/articles/309423.pdf
Data publikacji:
2016
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
Bayesian game
game theory
leadership
Nash equilibrium
normal form games
security games
Stackelberg equilibrium
Stackelberg games
Opis:
Stackelberg games are non-symmetric games where one player or specified group of players have the privilege position and make decision before the other players. Such games are used in telecommunication and computational systems for supporting administrative decisions. Recently Stackleberg games became useful also in the systems where security issues are the crucial decision criteria. In this paper authors briefly survey the most popular Stackelberg security game models and provide the analysis of the model properties illustrated in the realistic use cases.
Źródło:
Journal of Telecommunications and Information Technology; 2016, 3; 70-79
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stability and Generalized Competitive Equilibria in a Many-to-Many Gale-Shapley Market Model
Stabilność i uogólnione równowagi konkurencyjne w modelu rynku Gale’a-Shapleya typu „many-to-many”
Autorzy:
Świtalski, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/1050555.pdf
Data publikacji:
2016-09-30
Wydawca:
Główny Urząd Statystyczny
Tematy:
stable matching
Gale-Shapley theory
many-to-many model
competitive equilibrium
discrete market model
contract theory
kojarzenie stabilne
teoria Gale-a-Shapleya
model „many-to-many”
równowaga konkurencyjna
dyskretny model rynku
teoria kontraktów
Opis:
We define, for some variant of a many-to-many market model of Gale-Shapley type, a concept of generalized competitive equilibrium and show that, under suitable conditions, stable matchings in such a model can be represented as competitive equilibria allocations (and vice versa). Our results are far-reaching generalizations of the “discrete supply and demand lemma” of Azevedo, Leshno (2011) for the college admissions market. Using the results of Alkan, Gale (2003), we also prove a theorem on existence of generalized equilibria in our model.
W artykule zdefiniowano, dla pewnego wariantu modelu rynku Gale’a-Shapleya (typu „many-to-many”), pojęcie uogólnionej równowagi konkurencyjnej i pokazano, że przy odpowiednich założeniach, skojarzenia stabilne w tym modelu mogą być reprezentowane jako alokacje równowag konkurencyjnych (i vice versa). Przedstawione wyniki są daleko idącymi uogólnieniami „lematu o podaży i popycie” z pracy Azevedo, Leshno (2011) dotyczącego modelu rekrutacji kandydatów do szkół. Wykorzystując wyniki Alkana, Gale’a (2003), udowodniono również twierdzenie o istnieniu uogólnionych równowag dla podanego modelu.
Źródło:
Przegląd Statystyczny; 2016, 63, 3; 237-254
0033-2372
Pojawia się w:
Przegląd Statystyczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reconciling Incrementalism with Policy Change. The Punctuated Equilibrium Theory in Political Science
Łącząc inkrementalizm ze zmianą polityczną. Teoria przerywanej równowagi w naukach o polityce
Autorzy:
Czapiewski, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1953206.pdf
Data publikacji:
2015-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
theory of politics
policy process
public policy
policy change
punctuated equilibrium theory
Opis:
The aim of this article is to explain current definition and application of punctuated equilibrium theory, which is as influential as any conceptual framework concerning policy process in political science, stimulating thought and research over the last two decades. Baumgartner and Jones borrowed the concept from studies of the evolution of species, but – as author shows – without operationalized definition, and turned it into a metaphor that can have mostly pedagogical use. Author explains how punctuated equilibrium is useful for analyzing policy change in political systems other than the United States, but in the European political systems, political parties and their preferences must be taken into account. It is also presented how punctuated equilibrium is in fact a much-improved version of the incrementalism theory, rather than an application of biological insights to politics. Author differentiate successful application of the punctuated equilibrium in the description of the policy process from the explanation of Baumgartner and Jones about how those identified patterns in modern democracies were caused.
Celem artykułu jest wyjaśnienie aktualnej definicji i pozycji teorii przerywanej równowagi, która jest jednym z najbardziej wpływowych podejść badawczych dotyczących procesu politycznego w naukach o polityce, stymulując koncepcje i badania przez ostatnie dwie dekady. Baumgartner i Jones inkorporowali pojęcie z badań nad ewolucją gatunków, ale – jak wskazuje autor artykułu – pozbawiając go pierwotnej operacjonalizacji, zamieniając w metaforę o bardziej pedagogicznym walorze. Autor wyjaśnia, jak teoria przerywanej równowagi jest przydatna w analizie zmiany politycznej w systemach politycznych innych niż Stany Zjednoczone, ale w europejskich systemach politycznych konieczne jest uwzględnienie roli partii politycznych i ich preferencji. Zaprezentowano także, jak teoria jest faktycznie raczej znacznie poprawioną wersją teorii inkrementalizmu niż wykorzystaniem dorobku biologii w polityce. Autor odróżnia także pełną sukcesów aplikację teorii, która opisuje rzeczywistość procesu politycznego, od wyjaśnień i związków przyczynowych, które zdaniem Baumgartnera i Jonesa taki przebieg procesu zdeterminowały.
Źródło:
Athenaeum. Polskie Studia Politologiczne; 2015, 48; 37-50
1505-2192
Pojawia się w:
Athenaeum. Polskie Studia Politologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation of a solid product with high water content and water retention properties
Autorzy:
Cvijić, Marko
Golob, Janvit
Powiązania:
https://bibliotekanauki.pl/articles/778509.pdf
Data publikacji:
2020
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
water in organic phase emulsion
phase equilibrium
mass transfer
Luikov’s parameters
theory of drying
Opis:
This work presents the development of a solid product with a high water content (99.08%) and water retention properties. Water was chosen as a potential carrier of a volatile active substance and water retaining properties of material were studied at a temperatures and relative air humidity values with the support of the theory of drying. The study first confirmed the role of Gibbs’ phase rule in the research of solid-gas phase equilibrium, and second presented drying kinetics developed from Fick’s second law and expressed with the first term of the Fourier equation. Solutions of equations for phase equilibrium and mass transfer enabled the calculation of Luikov’s parameters, which are important for equilibrium relations and for the diffusivity of water in a solid for mass transfer prediction. The obtained thermodynamic and kinetic parameters enabled product characterisation that may be important for the prediction of retention times.
Źródło:
Polish Journal of Chemical Technology; 2020, 22, 3; 17-23
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Podstawowa jednostka przetwarzania informacji integrująca poznanie, emocje i język
Autorzy:
Harciarek, Mirosław
Powiązania:
https://bibliotekanauki.pl/articles/614627.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
cognitive unit
logon
cognition
emotions
language
attention window
cognitive equilibrium
theory of communication
jednostka poznawcza
poznanie
emocje
język
okno uwagowe
równoważenie struktur poznawczych
teoria komunikacji
Opis:
The question of the existence of a cognitive unit that integrates basic psychological processes, that is: cognition, emotions, and language, is raised in this paper. Usage of the concept of a basic unit of information processing (logon) in the form of a mathematical formula developed by D. Gabor in psychology is proposed here. It is inspired by views of K. Pribram and R. Llinas. Arguments for the existence of this unit in human psyche are presented, and its value for psychology is discussed here with reference to the concept of attention window, Gestalt, as well as J. Piaget’s cognitive equilibrium.  
W pracy podjęto problem istnienia jednostki poznawczej integrującej podstawowe procesy psychiczne: poznanie, emocje i język. W tym celu, inspirując się poglądami K. Pribrama i R. Llinasa, zaproponowano wykorzystanie w psychologii koncepcji podstawowej jednostki przetwarzania informacji (logonu), która ma postać matematycznego wzoru opracowanego przez D. Gabora. Wskazano na argumenty przemawiające za istnieniem takiej jednostki w psychice oraz omówiono jej wartość dla psychologii, nawiązując do koncepcji okna uwagowego, teorii postaci (Gestalt) oraz równoważenia struktur poznawczych według J. Piageta.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio J – Paedagogia-Psychologia; 2018, 31, 4
0867-2040
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio J – Paedagogia-Psychologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Po co matematykom Jan Jakub Rousseau?
Why do mathematicians need Jean-Jacques Rousseau?
Autorzy:
Kalinowska, Alina
Stański, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1388538.pdf
Data publikacji:
2015-09-30
Wydawca:
Uniwersytet Gdański. Wydawnictwo Uniwersytetu Gdańskiego
Tematy:
Game Theory
Competitive game
Cooperative games
Nash equilibrium
Pareto efficiency
Opis:
One day, Jean-Jacques Rousseau, who was known mainly as a philosopher and a pedagogue, told a deer hunting story. In doing so, he managed to play a small role in the development of the branch of maths called ‘game theory’. Later his story was converted into a game. Initially game theory was used to explain exchange in the field of economics. Over time, the mathematical modeling was found to be useful in the social sciences. A game theory describes diverse and cognizant participants forced to make decisions. In regards to the game based on cooperation, a choice is at the same time a dilemma. It can be viewed as a moral or philosophical predicament and in addition it gives as an inside into the human psyche and behaviour. Game theory has the potential to offer an attractive mathematical model, useful in analyzing social interactions. Though currently unappreciated by pedagogy, it has the potential to be successfully used in pedagogical studies analyzing conflict of interest of all participants in an educational process.
Źródło:
Problemy Wczesnej Edukacji; 2015, 30, 3; 121-125
1734-1582
2451-2230
Pojawia się w:
Problemy Wczesnej Edukacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the deformation of porous spherical bodies under radial surface traction
Autorzy:
De Cicco, Simona
Powiązania:
https://bibliotekanauki.pl/articles/2200889.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
linear elasticity
materials with voids
equilibrium theory
spherical solids
Opis:
The paper deals with the linear theory of elastic materials with voids based on the concept of volume fraction. In this model, the interstitial pores are vacuous and can contract or stretch. The change in the volume fraction is measured by a scalar function, so that independent kinematical variables are four: the components of displacements and the volume fraction function. The equilibrium problem of elastic spherical bodies under radial surface traction is solved. The solution is given in closed form and applied to study three special cases. Explicit formulas of the displacement, stress distribution and volume fraction function are given.
Źródło:
Journal of Theoretical and Applied Mechanics; 2023, 61, 2; 305--316
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On ”Games and Dynamic Games” by A. Haurie, J.B. Krawczyk and G. Zaccour
Autorzy:
Więcek, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/748451.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
game theory, dynamic games, equilibrium
Opis:
Although the title, ''Games and Dynamic Games"  of the new book by Alain Haurie, Jacek B. Krawczyk and Georges Zaccour suggests just another textbook on general game theory, with a little more stress made on dynamic aspect of games, the book appears to be something of novelty both in the scope and the treatment of the material. From the very first chapters of the book, it is clear that we will not be given another standard course of game theory, and that the dynamics of games will be the main issue. It starts with the simplest treatment of game dynamics, which is the extensive form of the game, and, having defined and explained the basic notions of static game theory, progresses to more complex dynamic models. Those start with deterministic repeated games, continue with variable state discrete time (or multistage) dynamic games and deterministic differential (that is, continuous time) games, and finish with stochastic models extending the ones presented before. Each part presents in a self-contained and comprehensive way, the main notions and solution concepts (such as open- and closed-loop strategies, Nash and correlated equilibria, subgame-perfectness, using threats to improve the performance of the equilibrium strategies) and theoretical results. It complements them with a number of economic applications, presented in detail. These applications relate to many fields of interest of economists, such as exploitation of renewable resources, environmental and energy issues, macroeconomics and finance. Each chapter ends with a set of excercices and a {\it game engineering} part, where a detailed presentation of a real-life application of some relevant game model is presented. Just this part is a novelty in the game-theoretic literature, as it shows to what extent the game-theoretic models can be applicable. Although the book presents the mathematical tools to model the situations of conflict in a rather rigorous way, it is clear that its target reader is someone with a background in economics or managemant science rather than mathematics. All the basic mathematical concepts used in the book are carefully explained, with those more complex ones (which appear in the latter chapters of the book) approached mainly through examples and intuitions. I believe this is a good decision of the authors, as in that way it makes the book really accessible to its potential readers. In fact, even though the tools (even those most advanced) of dynamic game theory have now been for many years used to model the economic interactions, surprisingly there has not been a single textbook addressed to more advanced students and researchers in economics and management science, presenting the state-of-art in the theory and applications of dynamic games in a comprehensive way. Those already existing required mathematical expertise well beyond what one could expect from typical economics/management students, and could not serve as textbooks for this type of readers. Moreover, those existing books concentrated without exception on some particular classes of dynamic games (such as differential games and their subclasses, stochastic games, repeated games). The book of Haurie, Krawczyk and Zaccour fills well the existing gap.Another important advantage of the book is its stress made not only on theoretical concepts and their adoption in real-life models, but on computation issues. The authors present a host of techniques to compute the solutions to the considered games either symbolically or numerically. They also provide information about software that can be used to solve similar games. Also the examples presented in game engineering sections are not abstract. They are based on real data, and issues of the credibility of the solutions obtained is discussed.The clarity of the exposition of often complicated topics is in general a big advantage of the book, although in latter chapters this clarity is sometimes unfortunatelly lost. The best example is the part about games over event trees with a confusing introduction concerning game with finite action sets and then the whole chapter concerning games with continuous ones. Also the last chapter, about stochastic-diffusion games, seems not very well conceived, as it jumps forth and back between an example and some more general considerations, leaving the reader confused about the generality of what is presented. These are certainly minor problems, but unfortunatelly there are other, more upseting issues. In general, it seems that the manuscript was not proofread carefully enough. The number of typos is enormous (the errata added to the book enumerates just a small fraction). Also some other faults, such as references to the colors on one of the figures, which is in black and white (p. 187), self-contradicting sentences like ''We use $\beta$ for a discount factor because we use $\beta$ to denote a strategy'' (p. 233), faults in references between chapters of the book (p. 372, footnote on p. 419) could have been easily eliminated if the book was properly proofread. What is worse though, is that there are also some more serious mistakes: one of the assumptions of the Kakutani fixed point theorem is missing, $\epsilon$-Nash equilibrium in Lemma 10.1 should be $A\epsilon$-equilibrium. And finally---it seems that most of the section 11.6.1 is missing from the manuscript. This significantly reduces the value of the book. Nevertheless, although I believe that all these errors should make the reader more cautious when reading the book, they do not unmake its main quality, which is acquainting all those interested in describing some real-life multi-agent economic situations in a rigorous way with the theory which provides the tools for doing it.
Źródło:
Mathematica Applicanda; 2013, 41, 1
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modified Coulomb law
Autorzy:
Etkin, V. A.
Powiązania:
https://bibliotekanauki.pl/articles/1179008.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Coulomb and Newton laws
attraction and repulsion
dipole representation
electric charge
equilibrium
interaction
polarization
unified field theory
Opis:
A field form of the Coulomb law is proposed, which describes the electric field as a function of the charge density gradient. This law is analogous in form to the modified Newton's law and similarly it reveals the possibility of attraction and repulsion of charges of the same sign as a function of the direction of the gradient of its density, and also the existence of electrostatic equilibrium. As an example of the use of this law, the erroneousness of the assertion that there are no free charges in the volume of the conductor is shown and a new treatment of the polarization processes is given as a result of the redistribution of charges of the same sign in it. A solution is proposed for the stability of atoms and their nuclei on the basis of electrostatic equilibrium and the wave concept of the structure of matter. Experimental confirmations of the proposed concept are presented.
Źródło:
World Scientific News; 2017, 87; 163-174
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł

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