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No full textPoznańThe present work deals with a new problem of generalized thermoelasticity with one relaxation time for an infinitely long and isotropic annular cylinder of temperature dependent physical properties. The inner and outer curved surfaces of the cylinder are subjected to both the mechanical and thermal boundary conditions. A finite difference model is developed to derive the solution of the problem in which the governing equations are coupled non linear partial differential equations. The transient solution at any time can be evaluated directly from the model. In order to demonstrate the efficiency of the present model we consider a suitable material and obtain the numerical solution of displacement, temperature, and stresses inside the annulus for both the temperature-dependent and temperature-independent material properties of the medium. The results are analyzed with the help of different graphical plots
No full textPoznańThis publication presents a two-by-two contingency table as a goodness-of-fit test. The test is devoted to the exponential distribution. However, samples subjected to the test come from the Generalized Gamma Distribution. The aim is to determine the power of the test and to compare the obtained results to the Kolmogorov-Smirnov goodness-of-fit test
No full textPoznańThe purpose of this paper is to present the design of the integration of radio-astronomical VLBI experiments with the Grid environment. The current status of the VLBI process is described, and the main part of this document presents the proposed architecture for the development of the next generation e-VLBI system. This design was created for the purpose of the EXPReS project [12], partially funded by the European Commission (FP6 – IST)