Volume 6

Czasopismo Techniczne

2018

Data publikacji: 25.05.2018

Licencja: Żadna

Redakcja

Redaktor naczelny Józef Gawlik

Zawartość numeru

ARCHITECTURE AND URBAN PLANNING

Adapting Cracow’s Stare Debniki area to the mobility needs of sight-impaired people

Krystian Banet, Ewelina Stypułkowska

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 5 - 16

https://doi.org/10.4467/2353737XCT.18.083.8688

An ageing society and the predicted increase in the visual impairment of older people requires attention to be paid to the accessibility and social inclusivity of urban spaces. This paper reviews spatial barriers with particular emphasis on the limited mobility of people with visual dysfunction. Furthermore, by the example of the Stare Dębniki area in Cracow, the paper includes improvement opportunities related to the accessibility of urban spaces. The detailed Let’s make noise project was developed at the ‘Przepis na miasto’ workshop.

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In search of a healthy balance on the example of the New District of Seestadt Aspern in Vienna

Damian Poklewski-Koziełł

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 17 - 28

https://doi.org/10.4467/2353737XCT.18.084.8689

The aim of the article is to present one of the largest city expansion projects in Europe; it is currently being carried out on the north-eastern edge of Vienna and is known by the name Seestadt Aspern. Its design by the Swedish design office Tovatt Architects and Planners AB, which was selected through a competition in 2005, is characterized by an extraordinary wealth and variation of paved and green public spaces, as well as water bodies of varying accessibility which have been designed in such a manner as to create a system of safe and traffic-free walkable pathways and urban squares. The article will present a classification of the varied typology of the aforementioned spaces both in reference to urban plans, as well as to already built fragments of the city.

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Principles of architectural and landscape design of water areas

Lyuda Ryban

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 29 - 40

https://doi.org/10.4467/2353737XCT.18.081.8563

Nowadays, the paradigm of coexistence with the planet’s aquatic environment is changing due to the impact of many factors, among which climate change plays a principal role. The importance and necessity of finding new rules for the coexistence of water and humans on the planet is a reality of our time. The Paper justifies the necessity of considering Water areas as an object of urban planning and landscape design. There are three main ideas that uncover the meaning of the subject according to the principles of designing Water areas: considering them as habitat environments, investigation of changes in the lives of the current generation in accordance with the necessity to adapt to climate change, studying a nation’s memory in a historical retrospective and in the process of searching for historical national identity. The study considers water depending on its physical state.

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CHEMISTRY

Diazafluorene in 1,3-dipolar cycloaddiction reactions: short review

Karolina Kula, Agnieszka Łapczuk-Krygier

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 41 - 53

https://doi.org/10.4467/2353737XCT.18.085.8690

This review is an attempt to systemise knowledge within the field of 1,3DC reactions of diazafluorene with different dipolarophiles. This paper is arranged according to the dipolarophile structure. We are hoping that this review can help organic chemists who deal with the preparation of five-membraned heterocycles. Keywords: diazafluorene, 1,3-dipolar cycloaddition, 1,3-dipol

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CIVIL ENGINEERING

The modelling of technological processes at border transfer stations in Ukraine

Evgen Aleshinskiy, Vitalii Naumov, Oksana Pestremenko-Skripka

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 55 - 66

https://doi.org/10.4467/2353737XCT.18.086.8691

In the process of the transfer of railway wagons between countries, the main role in processing the flow of cargo is assigned to a border transfer station. Additional border operations – such as customs, environmental, veterinary, phytosanitary, and epidemiological control – have led to a significant increase in the number of detained railway wagons. As a result of these increases, delays in the deliveries of both import and export cargoes have also increased. Reducing the duration of the delivery of goods by rail could be achieved through reductions in the times taken to process trains at border transfer stations – risk management systems based on the principle of selective survey operations in international traffic processing provide such an opportunity

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Mode choice modelling for urban areas

Krystian Birr

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 67 - 77

https://doi.org/10.4467/2353737XCT.18.087.8692

This article addresses the issue of mode choice modelling using a four-stage travel modelling process. The article indicates limitations of the currently used simplified methods of mode choice modelling and proposes the use of a more detailed approach that accounts for additional, statistically significant factors with the use of advanced mathematical tools and discrete choice models. A need has also been identified to include qualitative factors in forecasting the modal split and in the scenario analyses

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A multi-criteria appraisal of the selection of means of urban passenger transport using the Electre and AHP methods

Mariusz Dudek, Katarzyna Solecka, Matthias Richter

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 79 - 93

https://doi.org/10.4467/2353737XCT.18.088.8693

This article presents the main components of the multi-criteria decision making (MCDM) methodology and their application in the assessment of several public transportation solutions in a specific traffic corridor. The corridor in question is 15 km long and runs through the centre of Wrocław, Poland. The analysis focused on six alternative scenarios. The following elements were taken into consideration in their design: alternative means of land transport; different types of vehicles and priorities for public transportation; location of bus and tram stops. The individual solutions were assessed based on six criteria designed to measure different aspects of the problem with the use of two alternative MCDM methods: Electre III/IV and AHP. Computational experiments established the final ranking of transport solutions in the corridor from best to worst in terms of the analysed criteria.

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An analysis of the influence of selected factors on the accident rate in the construction industry

Bożena Hoła, Tomasz Nowobilski , Jarosław Rudy, Krzysztof Czarnocki

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 95 - 101

https://doi.org/10.4467/2353737XCT.18.089.8694

This paper presents the results of research aimed at constructing a linear mathematical model that determines the influence of selected factors characterising construction production on the accident rate in the construction industry. A number of linear multi-factor mathematical models were developed, which were then compared with each other, and those that best described the analysed phenomena were selected.

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The impact of long-term travel demand changes on mixed decision problems of mass transit lines construction and vehicles’ depots location

Piotr Sawicki, Szymon Fierek

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 103 - 112

https://doi.org/10.4467/2353737XCT.18.090.8695

The paper is concentrated on solving a mixed decision problem of mass transit line construction and vehicles’ depots location (MTLC&VDL). The authors have iteratively solved this problem as a function of scenariobased, long-term travel demand changes, and finally have analysed the generated results. As a product of the computations, it has been proved that the solution of the mixed MTLC&VDL decision problem depends on changes in travel demand, both in terms of the line construction and the location of the depot. 5 and 10% increase of travel demand leads to changes in the optimal mass transit line’s configuration, while the change of the optimal depot location takes place with 10% of the travel demand change. The results have implied a conclusion that to make strategic decisions on transport systems and solving mixed decision problems, forecasting travel demand changes (its volume and structure) over the long-term horizon has to be performed.

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Control of the vibration structure induced during works with the use of explosives

Anna Sołtys, Józef Pyra, Michał Twardosz

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 113 - 125

https://doi.org/10.4467/2353737XCT.18.091.8696

This article presents the results of research on controlling the structure of vibrations induced during the firing of explosives with the use of non-electrical and electronic systems and the influence of the vibration structure during a transition from the ground to the building. The use of procedures associated with the selection of millisecond delay for firing explosive charges during blasting allows to get the excitation of favourable structure vibrations, thanks to a strong damping which is obtained at the transition from the ground to the structure. This means that optimally designed blasting works do not have to limit the mass of the explosives in the borehole as well as their number.

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ELECTRICAL ENGINEERING

Active power measurement based on digital processing of voltage and current signals

Andrzej Bień, Edward Layer

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 127 - 132

https://doi.org/10.4467/2353737XCT.18.092.8697

The concept of active power measurement based on real-time digital processing of voltage and current signals is best’ introduced with a digital approximation definition . In this paper, the authors propose an integral calculation method based on Gregory’s expression, correction of integration period estimation and integration result correction taking values related to the ends of the integration period into account. In the described method, the integral is calculated between two consecutive maximums of the voltage and current product.. Digital dependencies that are easy to implement are used for the evaluation of the active power value. To measure the voltage and current signals, the authors used a system with a digital signal processor and an A/D converter with a multiplexer followed by dedicated digital filters. The active power measurement method was checked by building an instrument simulation model.

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Relationship between the absolute error and parameter values of voltage output accelerometer

Krzysztof Tomczyk, Marek Sieja

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 133 - 143

https://doi.org/10.4467/2353737XCT.18.093.8698

The functional relationship between the absolute error and the parameter values of a voltage output accelerometer is presented in this paper. The theoretical basis for the mathematical model of the accelerometer and its standard, which is a reference for the error determination, is discussed. The polynomial function is applied for error approximation. Optimal orders of the polynomial along with their parameters and associated uncertainties are determined. The results presented in this paper concern the maximum errors obtained by exciting the accelerometer by the signal of constrained magnitude.

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MECHANICS

Estimation of the localisation and geometric parameters of the semi-solid zone of steel samples

Tomasz Dębiński

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 145 - 154

https://doi.org/10.4467/2353737XCT.18.094.8699

This paper presents the use of computer graphics methods for the initial estimation of the shape, position and volume of the semi-solid zone in samples from the Gleeble 3800 physical simulator. Simulations were performed for the verification of the heating and deformation process of steel with a semi-solid zone. The numerical model consists of three separate subsystems for describing the deformation of the solid and semi-solid zones: mechanical, thermal and predictive densities. Taking into consideration the specific localisation of these zones, the initial estimation of the location of the melting zone is very helpful in understanding the process and may be the starting point for further research. This article describes the technique of selecting areas in samples that meet the thermal criteria. This allows us to approximate the location and shape of the semi-solid zone and this information can be used at a later stage to further refine its parameters.

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A simulation study of the graphical user interface of the head-up display and its influence on the driver’s perception

Halszka Skórska, Jerzy Sładek

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 155 - 166

https://doi.org/10.4467/2353737XCT.18.095.8700

This article presents the results of a simulation study of an augmented reality system and its influence on the user’s perception and reaction time. An automotive head-up display was chosen to conduct this research. It was assumed that the configuration of the GUI influences the perception and response time of the user of the augmented reality system. The perception of the driver was tested by using an eye-tracking device with accompanying software. The optimal graphical user interface (GUI) was developed as a result of the research.

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The application of a simulation method in the evaluation of the reliability of transport systems

Grzegorz Kaczor, Maciej Szkoda

Czasopismo Techniczne, Volume 6 Year 2018 (115), 2018, s. 167 - 178

https://doi.org/10.4467/2353737XCT.18.096.8701

Reliability is the one of the key features that determine the probability of the proper functioning of a transport system. It refers to the degree to which the transported load is delivered on time, according to the client’s requirements. However, taking into account the complex relationships between the components of the transport system requires the application of appropriate methods of calculation. The paper presents the application of a method of reliability assessment, based on the Dynamic Fault Tree (DFT) and Monte Carlo (MC) simulation. The investigated approach may be used for the identification of weak components of the transport system and may form the basis for the improvement of reliability.

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Słowa kluczowe: blind, pedestrians, sustainable mobility, Mixed-use development, sustainable mobility, walkability, architectural and landscape design, water areas, habitat, environment, adaptation to climate change, historical memory of nation, physical state of water: solid, liquid, gas, diazafluoren, 1, 3-dipolarna cykloaddycja, 3-dipol, border transfer station, simulations, Petri nets, risk management system, travel modelling, modal split, mode choice modelling, transportation corridor, public transportation, multi-criteria decision making, accident factor, occupational accident, construction and assembly production, linear multi-factor mathematical model, mass transit lines construction, vehicles’ depots location, travel demand, exact optimisation, traffic modelling, Open-pit mining, blasting technique, millisecond blasting, vibration structure, impact of vibrations on buildings, active power, digital filtering FIR, absolute error, approximation function, voltage output accelerometer, computer simulation, computational geometry, convex hull, visualisation of calculation results, augmented reality, head-up display, graphical user interface, simulation, perception, reaction time, reliability, Dynamic Fault Tree, Monte Carlo simulation