The minimum wage in the dominant firm model

"This paper examines the impact of minimum wage in a dominant firm model. It is shown that in a labor-intensive market, the introduction of a binding minimum wage creates an entry barrier in the short run and increases unemployment in the long run." (Author's abstract, IAB-Doku) ((en))Mindestlohn - Auswirkungen, Großunternehmen, Dienstleistungsbereich, Post, Wirtschaftsstruktur, Unternehmensgründung, Wettbewerb, Beschäftigungseffekte, Arbeitslosigkeit, Monopol

Good Causes oder High Profits: Unterschiedliche Geschäftsmodelle und gesellschaftliche Verantwortung am Online-Glücksspielmarkt

aus dem Inhaltsverzeichnis: Management Summary; Problemstellung und historischer Überblick; Der globale Glücks- und Wettspielmarkt; Spielerträge und Lizenzabgaben von RGA und EGBA Mitgliedern; Mikroökonomische Überlegungen zum online-Glücksspielmarkt; Szenario A: De Jure Monopol mit Konkurrenz; Szenario B: Teilliberalisierung; Szenario C: Konsequentes Monopol; Zusammenfassung Markteigenschaften und Szenarien; Literatur; Tabellenverzeichnis; Abbildungsverzeichnis

Disappearance of the Abrikosov vortex above the deconfining phase transition in SU(2) lattice gauge theory

We calculate the solenoidal magnetic monopole current and electric flux distributions at finite temperature in the presence of a static quark antiquark pair. The simulation was performed using SU(2) lattice gauge theory in the maximal Abelian gauge. We find that the monopole current and electric flux distributions are quite different below and above the finite temperature deconfining phase transition point and agree with predictions of the Ginzburg-Landau effective theory.Comment: 12 pages, Revtex Latex, 6 figures - ps files will be sent upon reques

Protecting social interest in free invention

Intellectual property

THE EFFECTS OF FOREIGN INVESTMENTS ON ROMANIAN ECONOMY

The Romanian economy is marked by great micro and macroeconomic instability generated by the transition to a functional market economy. The direct foreign investments play an extremely important role among others in the formation of fixed capital necessarForeign investments, economic development, transnational corporations

Topological gauge theories with antisymmetric tensor matter fields

A new type of topological matter interactions involving second-rank antisymmetric tensor matter fields with an underlying $N_T \geq 1$ topological supersymmetry are proposed. The construction of the 4-dimensional, $N_T = 1$ Donaldson-Witten theory, the $N_T = 1$ super-BF model and the $N_T = 2$ topological B-model with tensor matter are explicitly worked out.Comment: Latex, 17 pages; refinement of an argument, addition of a footnot

Radiative Tau Decays with One Pseudoscalar Meson

We have calculated the decay $\tau \rightarrow \nu \pi(K) \gamma$. We present the photon energy spectrum, the meson-photon invariant mass spectrum and the integrated rate as a function of a photon energy cut or an invariant mass cut. Both the internal bremsstrahlung and the structure dependent radiation have been taken into account. To this aim we have parametrized the form factors $F_V$ and $F_A$, which determine the structure dependent radiation. Observables especially suited for the measurement of the structure dependent form factors are found and implications on the width of the $a_1$ discussed.Comment: p.20, TTP93-1, LaTe

Petrov type D equation on horizons of nontrivial bundle topology

We consider $3$-dimensional isolated horizons (IHs) generated by null curves that form nontrivial $U(1)$ bundles. We find a natural interplay between the IH geometry and the $U(1)$-bundle geometry. In this context we consider the Petrov type D equation introduced and studied in previous works \cite{DLP1,DLP2,LS,DKLS1}. From the $4$-dimensional spacetime point of view, solutions to that equation define isolated horizons embeddable in vacuum spacetimes (with cosmological constant) as Killing horizons to the second order such that the spacetime Weyl tensor at the horizon is of the Petrov type D. From the point of view of the $U(1)$-bundle structure, the equation couples a $U(1)$-connection, a metric tensor defined on the base manifold and the surface gravity in a very nontrivial way. We focus on the $U(1)$-bundles over $2$-dimensional manifolds diffeomorphic to $2$-sphere. We have derived all the axisymmetric solutions to the Petrov type D equation. For a fixed value of the cosmological constant they set a $3$-dimensional family as one could expect. A surprising result is, that generically our horizons are not embeddable in the known exact solutions to Einstein's equations. It means that among the exact type D spacetimes there exists a new family of spacetimes that generalize the properties of the Kerr- (anti) de Sitter black holes on one hand and the Taub-NUT spacetimes on the other hand

En teoretisk studie av tv-markedets effisiens

I den første delen går vi gjennom tv-markedet, aktørene, og særegenheter ved dette markedet. Vi ser på implikasjoner av at tv-kanaler er tosidige plattformer, seerne er heterogene, og at tvprogrammer har karakteristika av å være et fellesgode. Deretter definerer vi hva et effisient tvmarked innebærer. Vi identifiserer tre variabler som vi mener vil ha innvirkninger på effisiens i markedet, disse er: mangfold, programkvalitet og reklamemengde. Vi ser så på hvilken betydning fire strukturelle faktorer påvirker tv-markedet. Dette er eierskapsstruktur, finansieringsform, forhold i produktmarkedet og distribusjonsteknologi. Vi finner da at delt eierskap vil gi større mangfold enn monopol, men at monopol kan ha sterkere incentiver til å investere i kvalitet. Finansieringsformen har innvirkning på programmenes karakteristika og mangfoldet. Vi ser også at produktmarkedet kan påvirke graden av kvalitet, antall seere osv., gjennom reklamemarkedet. Avslutningsvis ser vi på hvordan forhold i markedet blir påvirket når teknologien tv-programmene distribueres gjennom, kontrolleres av profittmaksimerende aktører. Her vil tv-kanalenes incentiver endres, mens distributørens incentiver kan innvirke på programmangfoldet i markedet