Crossed products and entropy of automorphisms

Let A be an exact C^*-algebra, let G be a locally compact group, and let (A,G,\alpha) be a C*-dynamical system. Each automorphism \alpha_g induces a spatial automorphism Ad_{\lamba_g} on the reduced crossed product A\times_\alpha G. In this paper we examine the question, first raised by E. Stormer, of when the topological entropies of \alpha_g and Ad_{\alpha_g} coincide. This had been answered by N. Brown for the particular case of discrete abelian groups. Using different methods, we extend his result to a wider class of groups called locally [FIA]^-. This class includes all abelian groups, both discrete and continuous, as well as all compact groups.Comment: A few corrections suggested by the referee. To appear in Journal of Functional Analysi

Vanishing of second cohomology for tensor products of typeII1_1 von Neumann algebras

We show that the second cohomology group $H^2(M\overline\otimes N, M\overline\otimes N)$ is always zero for arbitrary type II$_1$ von Neumann algebras $M$ and $N$.Comment: 13 page

Radiation Effects on the Flow near the Stagnation Point of a Stretching Sheet

The present paper is concerned with the study of the radiation effects (Rosseland model) on the flow of an incompressible viscous fluid over a flat sheet near the stagnation point. The system of ordinary differential equations is solved numerically using the Runge-Kutta method coupled with a shooting technique. The results show that a boundary layer is formed and its thickness increases with the radiation, velocity and temperature parameters and decreases when the Prandtl number is increased

Strangeness Production in pp,pA,AA Interactions at SPS Energies.HIJING Approach

In this report we have made a systematic study of strangeness production in proton-proton(pp),proton-nucleus(pA) and nucleus- nucleus(AA) collisions at CERN Super Proton Synchroton energies, using$\,\,\, HIJING\,\,\, MONTE \,\,\,CARLO \,\,\,MODEL$ \\ (version $HIJ.01$). Numerical results for mean multiplicities of neutral strange particles ,as well as their ratios to negatives hadrons($$) for p-p,nucleon-nucleon(N-N),\,\,p-S,\,\,p-Ag,\,\,p-Au('min. bias')collisions and p-Au,\,\,S-S,\,\,S-Ag,\,\,S-Au ('central')collisions are compared to experimental data available from CERN experiments and also with recent theoretical estimations given by others models. Neutral strange particle abundances are quite well described for p-p,N-N and p-A interactions ,but are underpredicted by a factor of two in A-A interactions for $\Lambda,\bar{\Lambda}, K^{0}_{S}$ in symmetric collisions(S-S,\,\,Pb-Pb)and for $\Lambda,\bar{\Lambda}\,\,$in asymmetric ones(S-Ag,\,\,S-Au,\,\,S-W). A qualitative prediction for rapidity, transverse kinetic energy and transverse momenta normalized distributions are performed at 200 GeV/Nucleon in p-S,S-S,S-Ag and S-Au collisions in comparison with recent experimental data. HIJING model predictions for coming experiments at CERN for S-Au, S-W and Pb-Pb interactions are given. The theoretical calculations are estimated in a full phase space.Comment: 33 pages(LATEX),18 figures not included,available in hard copy upon request , Dipartamento di Fisica Padova,report DFPD-94-NP-4

Thermophoresis effect on the free convective flow in a differentially heated square cavity

A numerical analysis is made for thermophoretic transport of small particles through the convective flow in a differentially heated square cavity. The governing gas-particle partial differential equations are solved numerically for some values of the considered parameters to investigate their influence on the flow, heat, and mass transfer patterns. It is found that the effect of thermophoresis can be quite significant in appropriate situations

European Policies for the Stimulation of Development of SMEs

Europe’s small and medium-sized enterprises are the engine of the European economy and the main drivers for achieving sustainable growth and more and better jobs. At EU level, the European Commission has developed a comprehensive SME policy, which aims to ensure that Community policies and actions are small-business friendly and contribute to making Europe a more attractive place for setting up a company and doing business

CONSIDERATIONS REGARDING THE BAIA MARE AREA METEOROLOGICAL CONDITIONS IN THE LAST 5 YEARS WITH HELP OF ENVIRONMENTAL INFORMATICS

Ever since “the environment” gained its place in the public international agenda (environmental legislation, sustainable development or disaster and hazard management) it has been bundled with data, information, knowledge and information systems. Environmental Monitoring Systems (EMSs), Environmental Monitoring and Analyzing Systems (EMASs) and especially Environmental Information Systems (EISs) are integrated part of what we call Environmental Informatics (EI) platform.In this context, as we speak, the are of EI is becoming more complex due to the current context and trend of making the EISs available to the public and end-users access; this phenomena is based on the assumption that public and environmental information end-users awareness, participation and acting is improved by the rate of access to the environmental information to solve the complex problematic covered by the research, engineering and environmental protection fields. The aim of the present paper is to introduce and describe an innovative possibilities of forecasting and monitoring the environment meteorological specific conditions in Baia Mare urban area using a specialized EISs software

Risk Factors Associated with Alcohol Consumption Among Romanian University Students- Preliminary Research

Young people’s consumption of alcohol is an ongoing problem. Many young adults binge-drink alcohol excessively, with serious negative consequences thereafter. This preliminary research assessed risk factors associated with alcohol consumption, drinking problems and related consequences among university students. The study was carried out on a total of 1056 students from UASVM Cluj-Napoca, Romania. University students claimed altered states of health after drinking episodes: vomiting, abdominal pain, headache, dizziness (43.1%), forgetfulness after drinking (3.1%). Furthermore, students who drank over the limit reported physical and violence-related problems (2.7%) and were more likely to develop risky behaviors, like driving under the influence of alcohol (13.9%) or car accidents (0.2%). The participants in the study were not heavy social drinkers, 50.9% of the respondents reported no consequences after drinking alcohol