The entropy of the noncommutative acoustic black hole based on generalized uncertainty principle

In this paper we investigate statistical entropy of a 3-dimensional rotating acoustic black hole based on generalized uncertainty principle. In our results we obtain an area entropy and a correction term associated with the noncommutative acoustic black hole when $\lambda$ introduced in the generalized uncertainty principle takes a specific value. However, in this method, it is not needed to introduce the ultraviolet cut-off and divergences are eliminated. Moreover, the small mass approximation is not necessary in the original brick-wall model.Comment: 9 pages, no figures; version to appear in PLB. arXiv admin note: substantial text overlap with arXiv:1210.773

Rinite atrófica dos suínos: alternativas de controle.

bitstream/item/59363/1/CUsersPiazzonDocuments3.pd

The eclipse java metamodel scaffolding software engineering research on java projects with MDE techniques

Java on the Eclipse IDE is a frequent choice for software development nowadays. Software Engineering researchers have built program analysis tools in that environment for several purposes. However, that requires a deep understanding of Eclipse internals, such as the Java AST. This paper discusses the feasibility of a metamodel-driven approach to scaffold the construction of such tools. Its core is the Eclipse Java Metamodel (EJMM), obtained through reverse engineering. The latter is instantiated with meta-objects representing the constructs of a given Java program. We then use OCL to traverse programs very easily. To validate the feasibility of our metamodel-driven approach to program analysis, we developed an Eclipse plug-in based on it, to support the metamodel-driven measurement (M2DM) approach.info:eu-repo/semantics/publishedVersio

On the effective action of the vacuum photon splitting in Lorentz-violating QED

We consider one-loop radiative corrections from Lorentz- and CPT- violating extended QED to address the specific problem of finding explicitly an effective action describing amplitude of photon triple splitting. We show that it is not possible to find a nonzero photon triple splitting effective action, at least by using the derivative expansion method (at zero external momenta), up to leading order in the Lorentz- and CPT- violating parameter.Comment: 4 pages, version to appear in EP