The presented analysis concerns deflections of the reinforced concrete slab in the fire-fighting water storage tank with volume of 950 m3. It was built on human-altered soil which led to deflection of the tank. When water was pumped out from the tank, rectification was performed. The tank and its slab foundation were non-uniformly elevated by means of hydraulic jacks. These jacks were installed under the slab, on foundation made of concrete block stacks, which were pressed into the ground. The computational analysis was conducted for displacements and deflections of the slab supported on the jacks. The number of jacks under the slab and stiffness of jack supports on the stacks were the variable parameters of the model. Stiffness of the jack supports was found to have non-significant impact on deflections of the foundation slab of the rectified tank. On the other hand, the number of jacks under the tank affected both deflections of the slab and displacements of the whole tank. The greatest deflection of the tank slab supported on three jacks was 15.233 mm, and the smallest one was 10.435 mm at 32 jacks.

The text presents the view of the Polish physicist Grzegorz Białkowski on using aesthetic criteria in the practice of science, first of all in the practice of physics. Białobrzeski claims—along with Henri Poincaré, Werner Heisenberg and Paul Dirac— that aesthetic criteria are present in the creating and assessing of scientific theories; he also searches for a justification of referring to these criteria. He also draws attention to the role of aesthetic experience in scientific activity. He justifies the presence of aesthetic criteria in physics as part of his naturalistic attitude.

Lexical knowledge sources are indispensable for research, education and general information. The transition of the reference works to the digital world has been a gradual one. This paper discusses the basic principles and structure of knowledge presentation, as well as user access and knowledge acquisition with specific consideration of contributions in German. The ideal reference works of the future should be interactive, optimally adapted to the user, reliable, current and quotable.

The aim of this article is to present selected meanings of the Spanish verb of movement entrar focused on the object oriented approach which can raise problems in the automatic translation process because of its ambiguity. The lexicographical description utilised in this analysis has been proposed by Banyś (2002a, 2002b) and constitutes the framework of this paper. Besides, the author shows the differences in presentations of selected meanings of the verb entrar in both Spanish and Polish.