Tensor supermultiplets and toric quaternion-Kahler geometry

We review the relation between 4n-dimensional quaternion-Kahler metrics with n+1 abelian isometries and superconformal theories of n+1 tensor supermultiplets. As an application we construct the class of eight-dimensional quaternion-Kahler metrics with three abelian isometries in terms of a single function obeying a set of linear second-order partial differential equations.Comment: 8 pages, Contribution to the proceedings of the RTN ForcesUniverse Network Workshop, Napoli, October 9th - 13th, 200

Typification and economic analysis of beef-producing farms in Spain

In spite of different economic agents’ interests, as well as the Administration’s effort in promoting extensive beef-producing systems over the last years, this kind of activity still hasn’t reached the desirable levels, being necessary that farmers perceive an appropriate benefit which supports their activity. In this sense, this paper, using the data obtained by a statistical survey representing all the extensive beef-producing farms existing in Castile and Leon (Spain), aims to analyze the economical results of extensive beef-producing farms, previously classified in representative groups according a quantitative method. The study is a preliminary research which intends to generate additional knowledge about the role of the different variables which make part of the economic results, and takes part of a research project financed by Castile and Leon Regional Governments, Education and Culture Council, through the annual program to support research projects (Order EDU/1143/2004).Cluster Analysis, extensive beef producing systems, economic accounts, Livestock Production/Industries,

Equation of state of a seven-dimensional hard-sphere fluid. Percus-Yevick theory and molecular dynamics simulations

Following the work of Leutheusser [Physica A 127, 667 (1984)], the solution to the Percus-Yevick equation for a seven-dimensional hard-sphere fluid is explicitly found. This allows the derivation of the equation of state for the fluid taking both the virial and the compressibility routes. An analysis of the virial coefficients and the determination of the radius of convergence of the virial series are carried out. Molecular dynamics simulations of the same system are also performed and a comparison between the simulation results for the compressibility factor and theoretical expressions for the same quantity is presented.Comment: 12 pages, 4 figures; v3: Equation (A.19) corrected (see http://dx.doi.org/10.1063/1.2390712

Percus-Yevick theory for the structural properties of the seven-dimensional hard-sphere fluid

The direct correlation function and the (static) structure factor for a seven-dimensional hard-sphere fluid are considered. Analytical results for these quantities are derived within the Percus-Yevick theoryComment: 3 pages, 2 tables, 1 figure; v2: minor changes; to be published in JC

Preliminary Evidence on Takeover Target Returns in Spain: A Note.

This paper measures the share price returns to Spanish takeover targets over the period 1990 to 1994. Using several estimation and testing methods, we show that target shareholders gain significant abnormal returns in the announcement period. In the first part of the year before the announcement period, firms that become targets do not show significant abnormal returns, though there is some significant upturn in the two months before the bid.Takeovers; Target firms; Abnormal residuals; Market model; Spain;

La competencia intercultural en el perfil del gerente actual

Este ensayo está basado en un estudio doctoral realizado en Barcelona, España para incluir la competencia intercultural dentro del aprendizaje en estudiantes universitarios que se preparan para un mercado laboral globalizado. Encontrará en el desarrollo como los gerentes que ya están laborando adquieren esta competencia por medio del auto aprendizaje cultural, que inicia como una situación de altibajos y cometiendo algunos errores que le ayudarán a conocer su propia naturaleza y la de los demás para mejorar el desempeño y llevando a comprender qué proceso era necesario para alcanzar el éxito

Danza del Santissimo Nacimiento de nuestro Señor Iesu Christo, al modo pastoril

Copia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 2009-201