Game Theory and Economic Behavior

Until the beginning of 1950s, the economic theory in general, and the microeconomic theory in particular, relied totally on the deterministic character of economic phenomena. Nowadays microeconomic models are built on uncertain elements in a competitive environment that is affected by risk and uncertainty. Two centuries later, traditional microeconomics, also known as derived microeconomics, continues to be based on Adam Smith’s theory. As individuals are interested in participating in commercial transactions, but for these to take place effectively, two essential principles should be observed: the principle of rationality and the principle of pure and perfect competition. The link between Brower’ fixed point theorems on the one hand and John von Neumann’s minimax theorem on the other hand enabled other authors such as McKenzie Arrow and Debreu Uzawa to state and demonstrate simpler but more general theorems than that of Abraham Wald. It was thus supposed that consumer preferences in a pool of possible consumptions are reflexive, transitive and all are comparable. Using game theory as a reference framework to represent the behavior of economic agents, microeconomics strongly renews its scope of investigation. The problem that arises is no longer linked to the study of perfectly competitive markets, but mostly to how agents coordinate their decisions in different strategic configuration circumstances. The use of such concepts as risk, antiselection or coordination limits has opened new scopes to economy in general and to microeconomics in particular.Game Theory, behavior of economic, traditional microeconomics, new microeconomics

THE BERTRAND MODEL OF THE SINGLE MARKET

Starting with the signification of the rationality hypothesis when the agentâ€(tm)s contentment is directly affected by the other agentsâ€(tm) decisions, the theory of games defines solutions for solving different situations of conflict. The economic actors have different behaviours of the Single Market. Oligopoly strategic behaviours were analysed by the Bertrand model. The two types revealed in the work show that strategic interactions are sensitive to the companiesâ€(tm) features, products and markets. Regarding the situation when we have an oligopoly competition, the companies make interdependent decisions in the environment affected by risk and uncertainty of the Single Market. For this reason it is an opportunity to study the structure of oligopoly type of of the Single Market with the aid of non â€" cooperative games.the Bertrand model, the Single Market, theory of games, Nash equilibrium

THE ECONOMIC CONVERGENCE IN THE EUROPEAN MODEL

The economic convergence consists in the very close, even identical evolutions of one variable in two different countries or regions. Within the European model, the macroeconomic and cohesion policies insure a good substantiation of the sustained economicEuropean model, economic convergence, economic growth

THE FREEDOMS OF MOVEMENT OF THE SINGLE MARKET

The European Single Market implies not only the free movement of goods and services, but also the free movement of production factors (the capital and the labor force).The liberalization of goods and services and of production factors movement has determined, on the short term, the appearance of some structural and specialization adjustment processes within the member countries, and on the long term a more efficient allocation of the production factors, an improvement of labor productivity and positive effects in the field of labor force employment. According to the neoclassical theory, the labor force migrates from regions with low wages and low profit rates, to regions having high wages and high profit rate. Thus, the production factors are used in a more productive way. According to this theory, the factors mobility contributes to the equalization of the wages and to a better factors allocation. Issues such as structural funds, persons' freedom of movement, convergence could be turned into advantages by any member state, and especially by a new member state. From an economic perspective, the causes of labor force mobility, as a production factor, are: the price differences (wage differences, profit rates differences, interest rates differences) - according to neoclassical theory; income difference, meaning saving excess or insufficiency for the capital, according to Keynes approach; differences in the level of economic development, determining unequal changes, according to the monetarists. Romania has become a European Union member at January, the 1st, 2007. The accession road has been a long one, full of challenges, issues, but also satisfactions. The 1st of January has not been the end of a process, but the beginning of a new period for Romania's present history. The author will try to emphasize the freedoms of movement of the Single Market. The humanitarian reasons also determine the migration of the population; these are the refugees, the asylum solicitors, the persons having temporary protection or persons accepted for other humanitarian reasons.Economic Integration, Models of Trade with Imperfect Competition, Labor Market Interactions, freedom, movement

DECISIONS ET COMPETITIVITE SUR LE MARCHE UNIQUE EUROPEEN

L’un des traits importants du marché unique européen, a comme source le męme énoncé du principal objectif de l’intégration européenne ainsi que: l’harmonisation des niveaux du développement des Etats Membres et l’augmentation du niveau de vie dans l’ensemble de la communauté. Pour le marché unique européen, cet aspect se traduit par une permanente et soutenue augmentation de la demande. Cet ouvrage présente au début une analyse des éléments spécifiques du marché européen. Ensuite on identifie les opportunités et les risques au niveau macroéconomique adjointes aux perspectives du marché unique européen. Comme fondement on présente des stratégies du développement réalisables au niveau microéconomique que puissent assurer l’augmentation du niveau sur la compétitivité des sociétés sur le marché unique européen

DECISIONS ET COMPETITIVITE SUR LE MARCHE UNIQUE EUROPEEN

L'un des traits importants du marché unique européen, a comme source le même énoncé du principal objectif de l'intégration européenne ainsi que: l'harmonisation des niveaux du développement des Etats Membres et l'augmentation du niveau de vie dans l'ensemble de la communauté. Pour le marché unique européen, cet aspect se traduit par une permanente et soutenue augmentation de la demande. Cet ouvrage présente au début une analyse des éléments spécifiques du marché européen. Ensuite on identifie les opportunités et les risques au niveau macroéconomique adjointes aux perspectives du marché unique européen. Comme fondement on présente des stratégies du développement réalisables au niveau microéconomique que puissent assurer l'augmentation du niveau sur la compétitivité des sociétés sur le marché unique européen.marché unique européen, concurrence, compétitivité, opportunités, risques, les stratégies du développement, les décisions stratégiques au niveau microéconomique

Protein Film Removal by Means of Low-Pressure Microwave Plasma - An Imaging Ellipsometry Study

Non-equilibrium plasma discharges have been recently proposed to be an effective tool for the removal of proteinaceous residuals from heat-degradable medical instruments. However, the knowledge regarding plasma-protein interactions is still relatively poor, which is a serious drawback for the validation of this technique as well as for its optimisation. This is, among other reasons, caused by the limitations of currently used techniques for monitoring of the rates of protein removal during plasma treatment. The objective of this article is to present an alternative method of evaluation of protein removal, based on imaging ellipsometry, which allows fast and semiquantitative analysis of the treatment efficiency.JRC.I.4-Nanotechnology and Molecular Imagin

Experiments with low-energy kaons at the DAΦNE Collider

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New experimental limit on the Pauli Exclusion Principle violation by electrons

The Pauli Exclusion Principle (PEP) is one of the basic principles of modern physics and, even if there are no compelling reasons to doubt its validity, it is still debated today because an intuitive, elementary explanation is still missing, and because of its unique stand among the basic symmetries of physics. The present paper reports a new limit on the probability that PEP is violated by electrons, in a search for a shifted K$_\alpha$ line in copper: the presence of this line in the soft X-ray copper fluorescence would signal a transition to a ground state already occupied by 2 electrons. The obtained value, ${1/2} \beta^{2} \leq 4.5\times 10^{-28}$, improves the existing limit by almost two orders of magnitude.Comment: submitted to Phys. Lett.

VIP: An Experiment to Search for a Violation of the Pauli Exclusion Principle

The Pauli Exclusion Principle is a basic principle of Quantum Mechanics, and its validity has never been seriously challenged. However, given its fundamental standing, it is very important to check it as thoroughly as possible. Here we describe the VIP (VIolation of the Pauli exclusion principle) experiment, an improved version of the Ramberg and Snow experiment (E. Ramberg and G. Snow, {\it Phys. Lett. B} {\bf 238}, 438 (1990)); VIP has just completed the installation at the Gran Sasso underground laboratory, and aims to test the Pauli Exclusion Principle for electrons with unprecedented accuracy, down to $\beta^2/2 \approx 10^{-30} - 10^{-31}$. We report preliminary experimental results and briefly discuss some of the implications of a possible violation.Comment: Plenary talk presented by E. Milotti at Meson 2006, Cracow, 9-13 June 200