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Gdańsk University of Technology

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Publications from the year 2016

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  • The analytical design method of railway route’s main directions intersection area
    • Władysław Koc
    2016 Full text Open Engineering

    The paper presents a design method related to railway track sections situated in a bend. In the method advantage is taken of an analytical form of description by using appropriate mathematical formulae. This may becomeparticularly usefulwhen the investigations are based on the data obtained from mobile satellite measurements. In the paper attention is concentrated on an universal approach creating an opportunity to diversify the type and length of the transition curves in use. The design procedure of the geometric lay-out is allocated to a particular local system of coordinates to be followed by a special transfer of the obtained solution to the national frame of space references 2000. The adopted course of procedure together with adequate theoretical relations has been provided. All the study has been illustrated with calculation examples based on data obtained from the railway line in operation.

  • The Antibacterial and Antifungal Textile Properties Functionalized by Bimetallic Nanoparticles of Ag/Cu with Different Structures
    • Marta Paszkiewicz
    • Anna Gołąbiewska
    • Łukasz Rajski
    • Ewelina Kowal
    • Agnieszka Sajdak
    • A. Zaleska-Medynska
    • Anna Golabiewska
    2016 Full text Journal of Nanomaterials

    We reported a preparation and characterization of five kinds of impregnation solutions, containing Ag/Cu in the formof bimetallic nanoparticles (alloy and core-shell) as well as ionic species. The cotton-polyester textiles were successfully impregnated during the washing and ironing process by as-prepared solutions to have antibacterial and antifungal properties against to Escherichia coli, Staphylococcus aureus, and Candida albicans. Moreover, we have reported the effect of type of the fabric used and number of washing/impregnation cycles (in a laboratory scale) on the bactericidal and fungicidal activity of obtained textiles.The results indicated that all tested samples after 5, 10, 15, and 20washing/impregnated cycles exhibited an antimicrobial activity.The antifungal tests showed that only textile impregnated with solutions containing Ag+/Cu2+ and Ag NPs/Cu2+ exhibited a strong inhibition of fungi growth of the after 5 (99.99%) and 15 (100%) washing/impregnation cycles, respectively.

  • THE APPLICATION OF KALMAN FILTERING TO PREDICT VERTICAL RAIL AXIS DISPLACEMENTS OF THE OVERHEAD CRANE BEING A COMPONENT OF SEAPORT TRANSPORT STRUCTURE
    • Daria Filipiak-Kowszyk
    • Waldemar Kamiński
    2016 Full text Polish Maritime Research

    As the devices designed to transport materials, the overhead cranes should meet certain geometric requirements for their operation to be safe. The presently available geodetic equipment, in particular total stations, provides opportunities for precise 3D measurements of coordinates of the controlled points. These coordinates make a basis for correcting the height of crane runway axes. The paper presents a method to calculate position corrections for the crane rail axes in both vertical and horizontal direction, and indicates that these results can find much wider application. Among other goals, the observations of this type, along with the Kalman filtration method, can be used to predict vertical displacements of the crane rail axes. The object of practical considerations in the paper is a crane working in the area with unfavourable geotechnical conditions and the settling limits attributed to this crane and location area in the technical design. The sample practical application has confirmed the validity of the use of the proposed solution for evaluating the operational safety of the crane. Although the tests were performed for the gantry crane, the proposed solution is believed to be applicable for other types of overhead cranes.

  • The application of moving bed biofilm reactor to denitrification process after trickling filters
    • Łukasz Kopeć
    • Jakub Drewnowski
    • Adam Kopeć
    2016 WATER SCIENCE AND TECHNOLOGY

    The paper presents research of a prototype moving bed biofilm reactor (MBBR). The device was used for the post-denitrification process and was installed at the end of a technological system consisting of a septic tank and two trickling filters. The concentrations of suspended biomass and biomass attached on the EvU Perl moving bed surface were determined. The impact of the external organic carbon concentration on the denitrification rate and efficiency of total nitrogen removal was also examined. The study showed that the greater part of the biomass was in the suspended form and only 6% of the total biomass was attached to the surface of the moving bed. Abrasion forces between carriers of the moving bed caused the fast stripping of attached microorganisms and formation of flocs. Thanks to immobilization of a small amount of biomass, the MBBR was less prone to leaching of the biomass and the occurrence of scum and swelling sludge. It was revealed that the maximum rate of denitrification was an average of 0.73 gN-NO3/gDM·d (DM: dry matter), and was achieved when the reactor was maintained in external organic carbon concentration exceeding 300 mgO2/dm3 chemical oxygen demand. The reactor proved to be an effective device enabling the increase of total nitrogen removal from 53.5% to 86.0%.

  • The application of neural networks in forecasting the influence of traffic-induced vibrations on residential buildings
    • Anna Jakubczyk-Gałczyńska
    • Adam Kristowski
    • Robert Jankowski
    2016 Full text Czasopismo Techniczne

    Traffic-induced vibrations may cause the cracking of plaster, damage to structural elements and, in extreme cases, may even lead to the structural collapse of residential buildings. The aim of this article is to analyse the effectiveness of a method of forecasting the impact of vibrations on residential buildings using the concept of artificial intelligence. The article presents several alternative forecasting systems for which it is not necessary to carry out laborious and costly measurement tests. The results show that artificial neural networks can be an effective tool for estimating the impact of traffic-induced vibrations on buildings; however, more cases need to be analysed in order to validate the system.

  • THE ARCHİTECTURE AND FASHİON DESİGN – An Examination of the Relationship between Fashion and Architecture Design in light of Technological Advancements
    • Anna Czech
    • Justyna Borucka
    2016

    The article focuses on the mutual relationship between two seemingly distant fields of art - architecture and fashion design. It describes a common basis for the process of creating art in the approach to both fashion and architecture. The following considerations, which are based on principles of composition, attempt to reach beyond just the form and analyze also context or perception. The article quotes famous creators and depicts interdisciplinary examples of fashion combining the principles prevailing in different styles of art and architecture as evidence of an unbreakable bond that exists between these seemingly different fields of creation. The analysis focuses on modern sources of inspiration from the virtual world, considering parametric vision of the futuristic, cybernetic art as a common denominator bringing the design process in architecture and fashion even closer to each other because of the mathematical, algorithmic notation.

  • THE ART OF VIRTUAL INFORMATION EXCHANGE AND ITS INFLUENCE ON REAL CITY SPACE
    • Katarzyna Urbanowicz
    • Lucyna Nyka
    2016

    The paper investigates the impact of the new genres of contemporary public art based on the virtual information exchange in real spaces of the cities. On the basis of theoretical approaches, trans-disciplinary surveys and case studies, the paper focuses on the art that not only relies on the technological support but also refers to the new public sphere, where people are co-creators of the art object giving their personal input into the final form. This art is very often experimental and sometimes brings about effects that are more than just esthetically pleasant or interesting from an artistic point of view. As it appears, even art based on the virtual information exchange has the power to stimulate city renewal processes. Interactive art installations, responsive environments and artistic media facades placed in public spaces have proved to have the potential to modify the perception of urban spaces and to activate the city dwellers, having a strong impact on the functioning of the city. While this form of public participation based on the physical presence of people on the streets and their direct involvement in creating a work of art remains a fertile ground for artistic experimentations, other genres of technically supported participatory works of art are emerging. They are based on remote participation by means of Internet or remote devices. These forms of art are built on the information exchange processes. People are sharing their personal experiences and feelings from the city spaces, their emotions and opinions about the places. The data is collected in a virtual space and serves as material for artistic experimentations. This paper analyses the influence of such artworks in different forms, such as city mapping, media screens or mutable digital installations, on the transformation process of urban public spaces. It reveals that the virtual information exchange transformed into artworks may have a practical impact on the real spaces of the cities.

  • THE ASSESSMENT OF THE SITUATION IN BANKING SECTORS IN SELECTED EUROPEAN COUNTRIES
    • Katarzyna Kubiszewska
    2016 Full text EKONOMIA I PRAWO

    The economic significance of the banking sector is well recognized in the theory and practice. In the literature there are discussed various topics concerning banking: banking sectors stability and its determinants, as well as influence of the banking sector on other sectors of the economy. Moreover the situation in the banking sector has been studied from different perspectives: its stability, profitability, efficiency, competition, concentration. A special part of literature is related to economies in transition. Therefore aim of the article is to conduct a comparative analysis of the financial standing of the banking sectors in selected countries of the Western Balkans, i.e. Bosnia and Herzegovina, Macedonia and Croatia, and current Baltic States (former republics of the USSR), i.e. Lithuania, Latvia and Estonia, few years after the financial crisis. Thanks to the use of the CAMELS method it is possible to check which banking sectors are in better shape: these which are only at the initial stage of transformation of the banking sectors or these where the transformation of this sector has been already completed. The data was collected from International Monetary Fund covering the period of five years 2010–2015, on quarterly basis.

  • The basics of design and experimental tests of the commutation unit of a hydraulic satellite motor
    • Paweł Śliwiński
    2016 Full text Archives of Civil and Mechanical Engineering

    he article presents an analytical method to design the commutation unit in a hydraulic satellite motor. It is shown that the size of the holes feeding the working chambers and their location on the plates closing those chambers depends on the geometrical dimensions of the working mechanism. The overlap in the commutation unit depends on the rotational speed range. It is demonstrated that the geometrical dimensions of the commutation unit clearances change as a function of the angle of machine shaft rotation. The flow in these clearances is described as Q = f(Δpγ). It has been observed that during the transition from the cycle of filling to the cycle of emptying the working chamber, the pressure in the motor's working chamber changes linearly as a function of the shaft rotation angle which has a significant effect on leakage in the commutation unit clearances. The methodology of investigating the commutation unit in a satellite motor and the mathematical model of leakage in the commutation unit clearance described in the article may be successfully adopted to research the commutation unit in positive displacement machines of another type.

  • The Boltzmann sequence-structure channel
    • Abram Manager
    • Daisuke Kihara
    • Wojciech Szpankowski
    2016

    We rigorously study a channel that maps binary sequences to self-avoiding walks in the two-dimensional grid, inspired by a model of protein statistics. This channel, which we also call the Boltzmann sequence-structure channel, is characterized by a Boltzmann/Gibbs distribution with a free parameter corresponding to temperature. In our previous work, we verified experimentally that the channel capacity has a phase transition for small temperature and decays to zero for high temperature. In this paper, we make some progress towards explaining these phenomena. We first upper bound the conditional entropy between the input sequence and the output which exhibits a phase transition with respect to temperature. Then we derive a lower bound on the conditional entropy for some specific set of parameters. This lower bound allows us to conclude that the mutual information tends to zero for high temperature.

  • The chapter analyses the K-Means algorithm in its parallel setting. We provide detailed description of the algorithm as well as the way we paralellize the computations. We identified complexity of the particular steps of the algorithm that allows us to build the algorithm model in MERPSYS system. The simulations with the MERPSYS have been performed for different size of the data as well as for different number of the processors used for the computations. The results we got using the model have been compared to the results obtained from real computational environment.
    • Julian Szymański
    2016

    The chapter analyses the K-Means algorithm in its parallel setting. We provide detailed description of the algorithm as well as the way we paralellize the computations. We identified complexity of the particular steps of the algorithm that allows us to build the algorithm model in MERPSYS system. The simulations with the MERPSYS have been performed for different size of the data as well as for different number of the processors used for the computations. The results we got using the model have been compared to the results obtained from real computational environment.

  • The chemistry of river–lake systems in the context of permafrost occurrence (Mongolia, Valley of the Lakes). Part I. Analysis of ion and trace metal concentrations
    • Małgorzata Szopińska
    • Danuta Szumińska
    • Żaneta Polkowska
    • Katarzyna Machowiak
    • Sara Lehmann-Konera
    • Stanisław Chmiel
    2016 Full text SEDIMENTARY GEOLOGY

    This study provides a description of water chemistry in river–lake systems located in central Mongolia, at the borderline of permafrost occurrence. The analysis involved water samples collected from two river–lake systems: Baydrag River–Böön Tsagaan Lake system, and Shargalyuut/Tuyn Rivers–Orog Lake system. In the water samples, ions and trace elements were detected and quantified. Additionally, the parameters of pH, electrical conductivity (SEC), total dissolved solids (TDS) and total organic carbon (TOC) were determined. Principal Component Analysis (PCA) was performed on the sample results. Water chemistry is mostly influenced by geochemical and hydrometeorological processes. Permafrost thawing could increase the concentration of nitrogen (NH4+, NO3−) as well as Na+ and Ca2+, Cl− and SO42−. However, it may also be an effect of other factors such as livestock farming. Seasonal drying out of lakes (e.g., Lake Orog) may also influence water chemistry by deflation of evaporites from exposed lake beds and, at the same time, with lower concentration of chemical compounds in water. The PCA shows that water samples can be divided into two groups. The first group contains lake samples, where water chemistry is shaped by prevailing evaporation processes, whereas the second includes samples from rivers and springs. Water chemistry of the latter is predominantly influenced by geochemical and hydrometeorological processes

  • The chemistry of river–lake systems in the context of permafrost occurrence (Mongolia, Valley of the Lakes) Part II. Spatial trends and possible sources of organic composition
    • Małgorzata Szopińska
    • Tomasz Dymerski
    • Żaneta Polkowska
    • Danuta Szumińska
    • Lidia Wolska
    2016 Full text SEDIMENTARY GEOLOGY

    The chemistry of river–lake systems located in Central Mongolia near the southern border of permafrost occurrence has not been well studied. The main aim of this paper is to summarize patterns in water chemistry in supply springs, rivers and lakes in relation to permafrost occurrence, as well as other natural and anthropogenic impacts. The analyses involved water samples taken from two river–lake systems: the Baydrag River–Böön Tsagaan Lake system and the Shargalyuut/Tuyn Rivers–Orog Lake system. Total organic carbon (TOC) and polycyclic aromatic hydrocarbons (PAHs) were detected and quantified. Other organic compounds, such as organic halogen compounds, phthalates, and higher alkanes were also noted. The main factors which influence differences in TOC concentrations in the water bodies involve permafrost occurrence, mainly because compounds are released during active layer degradation (in the upper reach of the Tuyn river), and by intensive livestock farming in river valleys and in the vicinity of lakes. In relation to the concentrations of PAHs, high variability between samples (>300 ng L−1), indicates the influence of thermal water and local geology structures (e.g., volcanic and sedimentary deposits), as well as accumulation of suspended matter in lakes transported during rapid surface runoff events. The monitoring of TOC as well as individual PAHs is particularly important to future environmental studies, as they may potentially reflect the degradation of the environment. Therefore, monitoring in the Valley of the Lakes should be continued, particularly in the light of the anticipated permafrost degradation in the 21st century, in order to collect more data and be able to anticipate the response of river–lake water chemistry to changes in permafrost occurrence

  • THE CIRCUS SITE
    • Weronika Maria Mazurkiewicz
    • Tomasz Furmańczyk
    • Caner Gizem
    • Milicevic Mario
    • Szymczyk Ewa
    • Xia Summer
    • Żebrowski Marcin
    2016

    The location of project is a site of over 1,2 ha, situated on the southern fringes of Gdynia formerly used as an area to host a Circus. Here artists were performing for the public, newcomers were meeting the locals, the temporality of the event was enhancing the experience of exchange. Circus used to be the place where people live, work and create art. Currently the site stays empty but surely not for long. Its potential, attractive location and demand for housing attracts developers. Existing local land development plan points the need to create a city subcenter with mixed use development that leaves over 25% of open space and protects vistas to the city and from the city to Tricity landscape park. With this project, our team looked closely at what the site could be and what sort of development would best suit contemporary Gdynia’s needs. We didn’t want to contest the existing plan but rather to start a dialogue which allows for more complementary vision. The location creates a potential of the site to be the gate to the city. The welcoming arms of Gdynia. We combine the two ideas: the circus and the gate, to guide a mixed use development, where different people meet in a vibrant, cultural place. At the city scale the site serves as a gate in few different dimensions. Firstly, it is the direct link from the surrounding Tricity landscape park to the coast. It is also an entry point, a first stop of SKM light rail connecting the TriCity - Gdansk, Sopot and Gdynia. The site, being at the edge of main city is also an entry to an upper terrace city with its satellite districts and cities. Located at the end of commercial corridor it links city centre and the biggest local shopping mall.

  • The conditions of the business services sector in Poland and its competitiveness in the global market
    • Dominika Bogacka
    • Robert Sterniński
    2016

    The following article presents the conditions of the business services sector (BSS) in Poland and the assessment of its competitiveness in the global market. The first section discusses the BSS sector and the categories of the provided services, in the division of business process outsourcing, shared services center, information technology outsourcing, research and development. Next the authors presents the status of the business services sector in Poland with particular emphasis on the number and size of individual centers as well as the employment, localization and origin of the investors. The last part assesses Poland’s competitiveness as a location for BSS projects based on the Global Services Location Index. The final part of the following consists of conclusions and final summary.

  • The convex domination subdivision number of a graph
    • Magda Dettlaff
    • Magdalena Lemańska
    • Saeed Kosary
    • Seyed Sheikholeslami
    2016 Full text Communications in Combinatorics and Optimization

    Let G = (V;E) be a simple graph. A set D\subset V is a dominating set of G if every vertex in V - D has at least one neighbor in D. The distance d_G(u, v) between two vertices u and v is the length of a shortest (u, v)-path in G. An (u, v)-path of length d_G(u; v) is called an (u, v)-geodesic. A set X\subset V is convex in G if vertices from all (a, b)-geodesics belong to X for any two vertices a, b \in X. A set X is a convex dominating set if it is convex and dominating set. The convex domination number \gamma_con(G) of a graph G equals the minimum cardinality of a convex dominating set in G. The convex domination subdivision number sd_con (G) is the minimum number of edges that must be subdivided (each edge in G can be subdivided at most once) in order to increase the convex domination number. In this paper we initiate the study of convex domination subdivision number and we establish upper bounds for it.

  • The Courts Public image - The Desired Direction of Change
    • Sylwia Morawska
    • Przemysław Banasik
    2016 Full text International Journal for Court Administration

    This paper proposes to scientifically explore notions of court identity, principles of shaping a court system's image, and best practices in positive court image development relating to thhe courts in Poland

  • THE CREATIVE AND SYMBOLIC FUNCTIONS OF DAYLIGHT IN THE ART MUSEUM BUILDINGS OF THE 21st CENTURY
    • Małgorzata Rogińska-Niesłuchowska
    2016

    The paper presents the results of the study on the current extent of daylight use in contemporary buildings of art museums, focusing especially on the possibilities of aesthetic function. A case study and critical analysis were used as the research method. Selected, representative examples of museums of the 21st century are discussed with regard to the creative and functional use of daylight and the application of advanced technology. The analyses showed that the most interesting and spectacular examples of daylight influence do not only concern the exhibition area, but also those places associated with it. Apart from having spectacular architectural form emphasized by the play of light, museums attract visitors by the way they are illuminated to create attractive and friendly space open to the public. The flow of light and transparency of materials, as well as the brightness, diversity and variability of lighting conditions at a particular time of day and year are essential.

  • The data exchange between smart glasses and healthcare information systems using the HL7 FHIR standard
    • Jacek Rumiński
    • Adam Bujnowski
    • Tomasz Kocejko
    • Aliaksei Andrushevich
    • Martin Biallas
    • Rolf Kistler
    2016

    In this study we evaluated system architecture for the use of smart glasses as a viewer of information, as a source of medical data (vital sign measurements: temperature, pulse rate, and respiration rate), and as a filter of healthcare information. All activities were based on patient/device identification procedures using graphical markers or features based on visual appearance. The architecture and particular use cases were implemented and verified using smart glasses prototypes developed under the eGlasses project and using a reference Health Level 7 Fast Healthcare Interoperability Resources (HL7 FHIR) server. The results show that information about the identified patient can be quickly retrieved from FHIR servers and annotated using voice recognition services. Smart glasses can be used in the measurement of vital signs of the observed patient, providing values of body temperature, pulse rate, and respiration rate by means of non-contact measurements. Such measurements are sufficiently reliable for medical screening and for fast data exchange using HL7 FHIR actions.

  • The determinants of morphology and properties of the nanohydroxyapatite coating deposited on the Ti13Zr13Nb alloy by electrophoretic techniqe
    • Michał Bartmański
    • Anita Berk
    • Agata Wójcik
    2016 Full text Advances in Materials Science

    The titanium and its alloys belong at present to the most preferred and commonly applied biomaterials for load- bearing implants. The surfaces of biomaterials are subjected to modification, including the hydroxyapatite coatings deposited in order to ensure corrosion resistance and better joining between an implant and a bone through the possibility of ingrowth bone into the coating. In this paper, the morphology and properties of the nanohydroxyapatite coating deposited on the Ti13Zr13Nb flat surfaces using electrophoretic method are presented. Electrophoretic deposition at two different current values and two electrolytes (first – ethanol with nanoHAp, second – methanol with nanoHAp) was applied. The scanning electron microscopy examinations and wettability angle measurements showed an increase in the coating thickness, the surface coverage and decrease in biocompatibility with increasing voltage. The surface condition and biocompatibility of coatings were better when using methanol/nanoHAp solution as compared to the ethanol/nanoHAp one.