Technical Transactions. Iss. 5

Technical Transactions. Iss. 5

Type: Collection of magazine numbers
Release date

Collection items (14)


Place and people: landscape as a basis of development and preservation of cultural identity

Tovbych, Valeriy, Viazovska, Anna, Kryvoruchko, Yuriy
Article
2018
Processes of globalization and urbanization are the main factors of changes in our environment and social foundations. Culture, traditions, customs, mythology are tightly bonded with the geographical environment and the land itself, which also defined the way of economic activity and the lifestyle of inhabitants. Identity may become apparent through landscape in two principal ways. On the one hand, landscape can represent and identify the certain culture by means of its visual image. On the other hand, the manifestation of deep links of landscape and its inhabitants by means of reviling emotional, visual and semantic connections of man to a land, affords to strengthen people’s feeling of belonging, rooting and thus safety, which is exceptionally essential in our era of non-stable uncertain modernity.

Excavation supported by diaphragm walls – inclinometric monitoring and numerical simulations

Grodecki, Michał, Toś, Cezary, Pomierny, Marcin
Article
2018
The results of the numerical simulation of deep excavation supported by a diaphragm walls are presented. Mohr-Coulomb and Hardening Soil models were used. The obtained horizontal displacements are compared with the results of the inclinometric monitoring and the observed discrepancies are discussed. Movement of the bottom of the wall – which is often neglected – is clearly observed both in the numerical simulations and in-situ measurements.

Continuous dependence of mild solutions on initial nonlocal data, of the nonlocal semilinear functional-differential evolution Cauchy problems of the first and second order

Bednarz, Adam, Byszewski, Ludwik
Article
2018
The aim of the paper is to prove two theorems on the continuous dependence of mild solutions, on initial nonlocal data, of the nonlocal semilinear functional-differential evolution Cauchy problems of the first and second orders. The paper is based on publications [1–10] and is a generalization of paper [5].

A real time control system for balancing a ball on a platform with FPGA parallel implementation

Samotyy, Volodymyr, Telenyk, Sergii, Kravets, Petro, Shymkovych, Volodymyr, Posvistak, Taras
Article
2018
In this paper, a new PID-regulator based solution to the scientific and practical problem of increasing the accuracy of regulating the position of a ball on a platform in real time is proposed. A transfer function for balancing a ball on a platform is developed. A PID-regulator for balancing a ball on a platform is synthesized. A PID-regulator implementation on FPGA with parallel calculations is designed. An increased accuracy of regulating the position of a ball on a platform is approved by natural simulation.

Evaluation of the practicability of the decomposition and equivalent substitution method in the analysis of reliability of the sewage system

Kubala, Marek, Królikowska, Jadwiga, Wawrentowicz, Dariusz
Article
2018
The work compares the accuracy of calculations of the reliability parameters of the sewerage network using the Decomposition and Equivalent Replacement (MDE) method, proposed by Yu. A. Yermolin and M.I. Alekseev [3], definitely simpler and less onerous in relation to the graph method. Comparing the results of calculations with both methods, applied to a simple network, one can come to the conclusion that the MDE calculations in simple cases give satisfactory accuracy. However, it would be necessary to check whether, as the complexity increases, this accuracy is still satisfactory.

Contemporary processes in historical urban greenery areas and the selection of materials – introduction to research

Bobek, Wojciech, Łakomy, Katarzyna
Article
2018
The paper will discuss urgent and topical problems that affect historical areas of urban open space. Its main goal will be the identification of phenomena which take place within it, and which mainly affect its natural tissue. The article will also contain such aspects as: an analysis of modern trends in revalorisation and the effects of its impact, an analysis of possible preventive measures that can be taken, as well as an evaluation of the influence of environmental factors on the condition of individual types of greenery.

Problems of creating spatial order of building development in post-agricultural areas

Delnicki, Maciej
Article
2018
An increase in the popularity of suburban areas as places of residence has triggered dynamic development of such areas in recent years. This resulted in mass designation of previously agricultural land for housing development. Suburban areas with typically agricultural land parcellation are not prepared for adopting building development structures of urban character without an interference into their parcellation structure. In a situation of sporadic application by communes of the procedure of land consolidation followed by secondary division for the purpose of preparing future investment land, the real estate economy becomes based on individual divisions. A lack of the right regulations in local development plans does not permit control of the progressing building development. As a result, urban sprawl occurs, and the resulting structures largely deviate from the rules of spatial order.

Urban planners in Poland. Practicing the urban planning profession in Poland and other European countries

Kafka, Krzysztof
Article
2018
The meaning of the “urban planner” differs in every national spatial planning system. Its definition in the EU scale as a profession in public trust, responsible for practical and scientific domains, social activities, organisational and creational ones deviates significantly from the Polish definitions, where the urban planner is being recognised as someone who prepares a local plan project. This situation is a symptom of the spatial planning crisis in Poland, and a crisis of the profession as well. This situation needs urgent reforms, which should bring back the situation of spatial planning as the most important tool for spatial management.

Polish city as perceived by a US grown urban planner

Grabowski, Ewa
Article
2018
This article describes the differences in perception of urban space, functional relations and needs of the inhabitants, observed in Polish cities and compared to American cities, focusing on the current approach to new development in Kraków and Phoenix in Arizona. The article particularly articulates such problems as transit and parking in view of the city’s functionality as well as their ecological and esthetic impact.

The influence of rock mass disturbance on surface subsidence in urban areas

Majcherczyk, Tadeusz, Kryzia, Katarzyna, Niedbalski, Zbigniew
Article
2018
This paper presents an analysis of the parameters of surface deformation prediction theory carried out for a hard coal mine in the Upper Silesian Coal Basin. Two areas of the coal mine were used as the subject of this analysis – in these areas, underground mining with roof caving was carried out in similar geological conditions for various numbers of seams, and consequently, for various rock mass disturbance rates. In order to estimate the parameters of the surface deformation prediction theory, i.e. the exploitation coefficient and the angle of the main range of influences, geodesic measurements of subsidence along the observation lines were used. The study shows that rock mass disturbance affects the values of the Knothe theory parameters and the values of the surface deformation indicators. In the case of a larger number of selected seams, the determined value of the exploitation coefficient was larger than the determined value in the case of a less disturbed rock mass. Assuming inappropriate parameters for surface subsidence prediction may cause unexpected damage to surface objects.