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Tourist traffic today constitutes the basis and condition for the functioning of parks and archaeological reserves. The employed forms of presentation, widely understood accessibility, as well as various conveniences for visitors, to a major extent determine the attractiveness of such places, and, consequently, the possibilities of acquiring financial means, both for the future research and for the...
This article considers the current problems of modern tendencies in the formation of the architecture of new mosques in Kazakhstan. The boldest inclinations in the architectural designs of contemporary Islamic cultural buildings by Sh. Yusupov, T.S. Abilda, Zh.N. Sharapiyev and N.S. Tokayev are described. Pioneering trends are defined on the basis of the architectural image and a planning analysis.
This paper discusses a data acquisition and analysis system used in automatic laboratory testing of settlements of soil. The system consists of several blocks. It may be applied in different, time consuming, soil measurements. All of them are the subjects of home and European standards. In the paper some experimental results have also been shown.
Despite of many tools supporting construction management delays are often found effects in construction projects. The papers presents the findings of a survey aimed at identifying the most important causes of delays in construction works from the viewpoint of contractors. The knowledge can be helpful for minimizing delays occurring risk.
Thermal regeneration of bentonite sorbent with application of the reburning, as a method of reduction of NOx emission, has been presented. It has been proved that in the freebooard above fluidised bed, it can be achieved significant decrease of NOx concentration in the flue gases, related to contractual conditions. In the freeboard of the reactor besides reburning it has been conduced separation of...
Free and open source software, due to liberal licensing and source code accessibility, seems to be perfect environment for science and research. Development of software with such license is supported by the biggest commercial companies, but also by local self-governments of countries like Switzerland, Italy or Spain. QGIS program can read and write most popular raster and vector formats, and works...
In the present study copper modificated 410L stainless steel was investigated. This steel was fabricated based on powders, by the pressing and sintering. By varying amount of copper and sintering temperature the properties of the 410L stainless steel can be improved. At sintering temperature of 1240°C and at high copper levels the microstructure of steel is predominately martensitic. The sintered...
In this study, we continue presenting profiles of some distinguished graduates in mathematics of the Jagiellonian University. We consider the years 1926‒1939, after the ministerial reform which allowed the students to graduate with a master’s degree. We also give a list of master’s theses in mathematics.
In the article we outline the life of Ludwik Silberstein (1872‒1948). We present his approach to the matrix calculus and its application to the operator form of relativity. We also give the list of books on the subject written by him as well as translated by him.
Jan Śleszyński, a great mathematician, is considered a pioneer of Polish logic; however, he was not connected with the famous Warsaw School of Logic (WSL). He believed that his mission was a critical evaluation of work of other logicians in the field of foundations of mathematics and proof theory. Among his writings we find several notes regarding the work of Stanisław Leśniewski (the co-founder of...
The structural application of shape memory materials is relatively new. It is possible that these materials provide the unusual property of creating stress in steel bars in a thermomechanical way. Depending on the alloy composition and production treatment, the characteristic transformation temperatures as well as the mechanical properties of the material vary and this may limit its technical effectiveness...
Pretensioned hollow core slabs are one of the most widely applied precast elements in the modern building industry all over the world. Due to the possibility of their use under various support or loading conditions, these elements repeatedly work under a complex stress state. Theoretical analysis of the phenomena of the interaction of shear and torsion in the above-mentioned HC elements is presented...
In 1937, Stefan Kaczmarz proposed a simple method, called the Kaczmarz algorithm, to solve iteratively systems of linear equations Ax = b in Euclidean spaces. This procedure employs cyclic orthogonal projections onto the hyperplanes associated with such a system. In the case of a nonsingular matrix A, Kaczmarz showed that his method guarantees convergence to the solution of Ax = b. The Kaczmarz algorithm...
This paper describes the philosophy of logic and mathematics in Poland in the years 1918‒1939. The special attention is attributed to the views developed in the Polish Mathematical School and the Warsaw School of Logic. The paper indicates various differences between mathematical circles in Warszawa, Lvov and Kraków.
This paper presents the results of laboratory experiments carried out on twelve clay brick masonry wallettes of two types under cyclic compressive loading. In the paper, the procedure adapted for testing is described and the results are discussed. The failure models and cracking patterns of the tested specimens are presented. The effects of the repeated load on the behaviour and mechanical properties...
In one of the oldest chemical plants in Poland are two reinforced concrete towers for fertilizer granulation which were built in the nineteen-thirties. These towers have operated continuously in a very hostile environment for about fifty years. The authors of this paper have used ad hoc methods of repair and protection with varying degrees of success for several years. In 2012, the renovation of one...
There is no interface reinforcement in composite floors made of HC slabs covered with structural topping. In such structures, the preparation of the top surface of the precast element has a major influence on longitudinal shear strength. The recommendations of various codes concerning the bearing capacity of the non-reinforced joint in concrete composite structures are presented in this paper. The...
The main goal of this paper is a description of clustering algorithm based on the particle swarm optimization algorithm, inspired on social behavior of animals and its application in fuzzy modeling. In the paper the idea of the heuristic swarm-based algorithm was presented, including a few modifications. Moreover, the results of the experimental evaluation were shown, both a selected optimization...
In this paper a new design tool is presented that is useful in automated synthesis of combinatorial logic. PKmin program is devoted for synthesis of 2-level circuits composed of gates and PLAs, multi-level circuits and a functional decomposition of logical functions for LUT-based logic implementations in FPGA. It has been built on the basis of the research conducted at Cracow University of Technology...
The goal of this paper is to apply Generalized Additive Models to medical scheme data. The flexibility of the nonparametric approach is demonstrated based on a real-life empirical example that seeks to model hypertension and the interplay of determinants, such as physiological measurements, medical attributes, demographic and socioeconomic characteristics in predicting blood pressure. The assessment...
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