Mixed duopolies with advance production

Production to order and production in advance has been compared in many frameworks. In this paper we investigate a mixed production in advance version of the capacity-constrained Bertrand-Edgeworth duopoly game and determine the solution of the respective timing game. We show that a pure-strategy (subgame-perfect) Nash-equilibrium point exists for all possible orderings of moves. It is pointed out that unlike the production-to-order case, the equilibrium of the timing game lies at simultaneous moves. An analysis of the public firm's impact on social welfare is also carried out. All the results are compared to those of the production-to order version of the respective game

Does timing of decisions in a mixed duopoly matter?

We determine the endogenous order of moves in a mixed price-setting duopoly. In contrast to the existing literature on mixed oligopolies we establish the payoff equivalence of the games with an exogenously given order of moves. Hence, it does not matter whether one becomes a leader or a follower. We also establish that replacing a private firm by a public firm in the standard Bertrand-Edgeworth game with capacity constraints increases social welfare and that a pure-strategy equilibrium always exists.Bertrand-Edgeworth; mixed duopoly; timing games

Kosztolányi Dezső levelezésének kritikai kiadásáról

This paper discusses the correspondence of Derső Kosztolányi and the related ongoing editing project. Recently work has been started on the critical edition of Kosztolányi's oeuvre with the author of this paper participating in the project team that is preparing for publication the correspondence of Kosztolányi, who was a seminal poet and writer of the Nyugat generation. Despite being on of the best known and most highly acclaimed modern Hungarian classics, his correspondence is not fully known. Most of the letters written by him have been published, yet letters written to him have not, and since the act of corresponding presumes a dialogic situation, a sequel of questions followed by answers, the former cannot be understood without the latter. The edition now in preparation is also designed to deal with that. Obviously, every document will have to be treated with textual scrutiny, since the texts previously published are not always trustworthy; we are aware of a case, for instance, when certain sentences of Kosztolányi fell prey to political censorship. The edition will also correct the errors and the deliberate lapses of memoirs based on retrospective and will present so far unknown references in Kosztolányi's literary career, also letting a glimpse into his private life. A lot of letters make reference to the works themselves, their making, publication, as well as their afterlives, also containing purely literary issues. The first volume of the critical edition of Kosztolányi's correspondence is bound to appear in 20I0. The author of this paper also plans to write a monograph on Kosztolányi using, among others, the letters proven original

OPTIMUM RELIABILITY OF A STEEL TAPERED PORTAL FRAME STRUCTURE EXPOSED TO FIRE

In this study, the optimum reliability of a tapered steel portal frame structure is presented for several cases. The aim of the research is to define target reliability indices for fire design situation since some research works (Balogh and Vigh, 2015a; 2015b) pointed that the achievable reliability (with using the prescriptive rules of Eurocode standards) is lower in extreme and seismic design situations than the suggested target value in (EN0, 2002). It seems that the target reliability indices of (JCSS, 2000) are preferable in these cases. In this paper, the optimum reliability is investigated as described in (Holickỳ, 2011), but total cost function is formulated with two decisive variables with respect to the amount of active and passive safety measures. The structural reliability is obtained with the help of a complex FORM (First Order Reliability Method) algorithm. The results of this investigation can help also to answer the question, whether active or passive safety measures are more effective tools to achieve optimal solutions in case of fire design of steel portal frames

Thermal stability of the microstructure of severely deformed copper

Copper specimens were deformed by equal channel angular pressing (ECAP) up to 8 passes. The microstructure was studied by X-ray line profile analysis. The crystallite size is reduced to a few tens of nanometers even after the first ECAP pass and it does not change significantly during further deformation. At the same time, the dislocation density increases gradually up to 4 ECAP passes. The thermal stability of the microstructure is examined by differential scanning calorimetry (DSC). The temperature of the DSC peak decreases whereas the stored energy increases with increasing strain. At the beginning of the heat release a bimodal grain structure develops indicated by a special double-peak shape of the diffraction line profiles