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Gdańsk University of Technology

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Publications from the year 2016

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  • MEDIA ARCHITECTURE AND INTERACTIVE ART INSTALLATIONS STIMULATING HUMAN INVOLVEMENT AND ACTIVITIES IN PUBLIC SPACES
    • Katarzyna Urbanowicz
    • Lucyna Nyka
    2016 Full text CBU International Conference Proceedings

    This paper examines the potential for media architecture and interactive art installations to stimulate human involvement and activities in public spaces. On the basis of theoretical approaches, case studies and interdisciplinary surveys, the paper provides insight into how screens projecting media and interactive installations in city spaces can inspire people to become active on many levels. The research is focused, both on temporary and permanent art installations, that support new technologies to encourage people to interact with art objects and become actors in an urban performance. Media and interactive art can positively contribute to the urban landscape, foster public involvement, increase intensity of public life, and effectively enhance the identity of urban communities. The paper shows that, despite this potential for media architecture and interactive art projects, specific pre-conditions are needed for their success in urban environments. The paper focuses on the convergence of scale between the intervention itself and the assumed urban strategy, as well as on the time allowed for individual perception and active participation of people in the particular urban art scenario. As the research shows, the promotion of art pieces, through guided tours of the city, tends to reduce the perception of the installations themselves and almost excludes social interactions. Thus, while not so spectacular in scale, image, or number of visits, modest interventions that involve locals and allow time for relationship building between people, could be most effective in reaching urban renewal objectives.

  • Media elektroniczne w życiu współczesnego człowieka
    • Przemysław Falkowski-Gilski
    • Ryszard Katulski
    2016 Elektronika : konstrukcje, technologie, zastosowania

    W artykule omówiono rolę mediów elektronicznych w życiu współczesnego człowieka. Dokonano analizy wybranych mediów w zakresie pełnionych funkcji. Przedstawiono wyniki badań przeprowadzonych na grupie 45 osób, uwzględniając aspekty społeczne, ekonomiczne oraz techniczne.

  • Medium-Voltage Drives: Challenges and existing technology
    • Haitham Abu-Rub
    • Sertac Bayhan
    • Shaikh Moinoddin
    • Mariusz Malinowski
    • Jarosław Guziński
    2016 Full text IEEE Power Eelectronics Magazine

    The article presents an overview of state-of-art solutions, advances, and design and research trends in medium-voltage (MV) drive technologies - and also discusses the challenges and requirements associated with the use of such drives. The choice and deployment of MV drives in industries are associated with numerous requirements related to the front-end converter (grid side) and inverter (machine side). The focus is on solutions that present high efficiency; low price, size, and weight; minimum harmonic distortion; reduction in dv/dt; mitigation of common-mode (CM) voltage; avoiding torsional vibration; transformerless solutions; fault detection capability; and condition monitoring. The ever-growing demand for electrical energy and the continuous rise in energy prices compel us to conclude that energy must be used more efficiently. Modern power electronics technology with high efficiency and appropriate control approaches is needed in energy-intensive industries to decrease the immense waste of energy and improve power quality. Since electric motor drive systems are the major consumers of energy, they have the greatest potential for improvement in terms of efficient energy consumption. High-power motors, mostly operating in MV, are of most interest, due to their enormous energy consumption. MV drives have found extensive applications in several industries, such as in the oil and gas, petrochemical, mining, water/waste, pulp/paper, cement, chemical, power generation, metal production and processes, traction, and marine drives sectors. To improve power quality and system response and to reduce operation cost and energy loss, the installed MV drives should be adjustable-speed drives (ASDs). Nevertheless, the deployment of such drives is associated with several requirements and challenges. Significant challenges are with the power line side, motor side, and semiconductor devices. Unfortunately, various challenges related to converters—line side as well as motor side - are faced when installing MV drives. Hence, the motivation behind this article is pointing out the challenges and problems faced when using MV drives and indicating the direction for proper use and understanding of such drives. The article presents the existing MV drive technologies and emphasizes the need for further development and enhancement of MV drives.

  • Melamine-modified boron-doped diamond towards enhanced detection of adenine, guanine and caffeine
    • P. Niedziałkowski
    • Robert Bogdanowicz
    • Patrycja Zięba
    • Joanna Wysocka
    • Jacek Ryl
    • Michał Sobaszek
    • Tadeusz Ossowski
    2016 ELECTROANALYSIS

    This work describes the electrochemical method of boron-doped diamond (BDD) modification by poly-melamine to obtain organic film. The detection of adenine, guanine and caffeine were carried out by differential pulse wave voltammetry. The poly-melamine modified B-NCD electrodes exhibit excellent activity towards the electrochemical oxidation of all examined analytes. The poly-melamine modified BDD electrodes in all measurements exhibit a larger peak current and are more sensitive compared to the unmodified BDD electrodes. The detection limit for the adenine, guanine and caffeine for modified BDD electrodes by poly-melamine was found with the range of 0.4-0.2 µM, 0.02 nM and 0.4 µM respectively.

  • Membrane Sterols Modulate the Binding Mode of Amphotericin B without Affecting Its Affinity for a Lipid Bilayer
    • Anna Neumann
    • Miłosz Wieczór
    • Joanna Zielińska
    • Maciej Bagiński
    • Jacek Czub
    2016 LANGMUIR

    Membrane-active antibiotics are known to selectively target certain pathogens based on cell membrane properties, such as fluidity, lipid ordering, and phase behavior. These are in turn modulated by the composition of a lipid bilayer and in particular by the presence and type of membrane sterols. Amphotericin B (AmB), the golden standard of antifungal treatment, exhibits higher activity toward ergosterol-rich fungal membranes, which permits its use against systemic mycoses; however, the selectivity for fungal membranes is far from satisfactory leading to severe side effects. Despite decades of research, no consensus has emerged on the origin of AmB specificity for fungal cells and its actual mode of action at the molecular level. Previously, it has been proposed that the specific action of AmB is related to differences in its affinity for membranes of different composition. In this work, we investigate this relationship by employing molecular dynamics simulations to compare the free energy of insertion of AmB into three types of membranes: a pure DMPC bilayer and DMPC bilayers containing 30% of cholesterol or ergosterol. We analyze the orientation of AmB molecules within the bilayer in order to unambiguously establish their membrane binding mode and relate the orientational freedom to the sterol-dependent tightness of lipid packing. Our results strongly indicate that the membrane insertion of AmB proceeds virtually to completion independent of membrane type, and hence the higher toxicity against fungal membranes may rather result from differences in subsequent oligomerization in the membrane and assembly of monomers into functional transmembrane pores. In particular, the latter could be facilitated by sterol-induced ordering of AmB molecules along the membrane normal, revealed by our free energy profiles. Moreover—in contrast to certain claims—we find no stable binding mode corresponding to the horizontal adsorption of AmB on the membrane surface.

  • Memory and Imagination: Artwork as a Form of Testimony
    • Joanna Kabrońska
    2016

    As the generation of witnesses is passing away and the testimonies of Shoah survivors are replaced by an inherited, culturally constructed memory - post-memory – art becomes a meaningful landmark in the landscape of memory. Although the narration of history - being the researchers’ discourse rather than an objective view - has been considered to a certain extent fictitious, the difference between real and fictional, between remembering and creating, becomes today - at the end of the era of eyewitnesses - more and more vague. Thus, art work should take on the role of a vicarious witness to a greater degree than previously. A special duty of art is to restore a discarded memory - such as the memory of the pogroms against the Jews in 1941 in North-Eastern Poland. Only in a few of the dozens of towns where pogroms occurred have memorials been built, and even fewer are inhabited by communities who are prepared to accept a difficult memory. The text is an attempt to define the role of art in the recognition of difficult issues of memory and the potential role of art as a testimony in a changing social context. The works of artists who deal with the subject of memory and social trauma and the role of art in restoring memory are also discussed.

  • Mentor&Student Research Lab – Urban Transformations – Introduction
    • Hanna Obracht-Prondzyńska
    2016

    Mentor&Student Research Lab - "Urban Transformations" is a common initiative of the members of Gdańsk University of Technology student research club, Urban Revolution Laboratory and the International Society of City and Regional Planners ISOCARP. The aim of the event was to promote collaboration of professionals and the students in the area of research on the city and the region. During three months’ Workshop five groups leaded by ISOCARP Mentors performed research on various issues which cities have to deal with. The results of Workshop were presented during the Conference, pre-event to the 50 Annual Congress of ISOCARP. The M&SRL Project turned out to be a big success and gained many positive opinions from not only its participants but also from people following the project from all around the world. The organizers already plan the next edition, which will take place in… well, it could be everywhere!

  • Mentor&Student Research Lab: new type of architectural and urban design workshops, new opportunities, valuable results
    • Hanna Obracht-Prondzyńska
    • Marta Rusin
    2016

    The space around us has significantly changed during last years. Polish cities have undergone a major transformation following political, economical and social transition [8]. Similar change is noticeable at universities and their educational programmes for architecture and spatial planning students. Nowadays designers and activists tackle completely different problems and have different opportunities than their older colleagues from the recent past. One of these new opportunities is international collaboration between professionals or researchers from all over the world. Mentor & Student Research Lab is a project that gains from this phenomenon and helps to establish collaboration between professionals and students.

  • Metal enhanced fluorescence of flavin mononucleotide using new plasmonic platform
    • Anna Synak
    • Beata Grobelna
    • Sangram Raut
    • Piotr Bojarski
    • Ignacy Gryczyński
    • Jakub Karczewski
    • Tanya Shtoyko
    2016 OPTICAL MATERIALS

    New plasmonic platform was successfully obtained to investigate the increase of fluorescence intensity of a fluorophore in the presence of silver nanoparticles. A flavin mononucleotide, was selected by us as a fluorophore for this study as a very important biological compound playing a key role in many biochemical process. Plasmonic platforms were characterized by means of luminescence spectroscopy. Flavin mononucleotide deposited on plasmonic platform exhibits dramatic emission enhancements in presence of silver nanoparticles deposited on gold mirror.

  • METHOD FOR SHIP'S ROLLING PERIOD PREDICTION WITH REGARD TO NON-LINEARITY OF GZ CURVE
    • Wojciech Wawrzyński
    • Przemysław Krata
    2016 Full text Journal of Theoretical and Applied Mechanics

    The paper deals with the problem of prediction of the rolling period. A special emphasis is put on the practical application of the new method for rolling period prediction with regard to non-linearity of the GZ curve. The one degree-of-freedom rolling equation is applied with using the non-linear stiffness moment and linear damping moment formulas. A number of ships are considered to research the discrepancies between the pending GM-based IMO- -recommended method and the results of conducted numerical simulations performed for a wide range of operational loading conditions. Since the research shows some drawbacks of the IMO formula for the ship rolling period, a new formula is worked out and proposed instead.

  • Method of sum of power losses as a way for determining the ki coefficients of energy losses in hydraulic motor
    • Agnieszka Maczyszyn
    2016 Full text Polish Maritime Research

    This paper shows application of the method of sum of power losses to determining energy losses which occur in hydraulic rotary motor in situation when not all laboratory data are at one’s disposal or when no use is made of data contained in catalogue charts. The method makes it possible to determine the coefficients ,ki , of energy losses occurring in the motor. The method of sum of power losses is based on the approach proposed by Z. Paszota, in the papers [3 ÷ 9]. It consists in adding power flow of energy losses occurring in the motor to power flow output and comparing the sum to the power flow input. Application of the method is exemplified by using a A6VM hydraulic motor.

  • Methodology and technology for the polymodal allophonic speech transcription
    • Andrzej Czyżewski
    • Tomasz Ciszewski
    • Bożena Kostek
    2016 Journal of the Acoustical Society of America

    A method for automatic audiovisual transcription of speech employing: acoustic, electromagnetical articulography and visual speech representations is developed. It adopts a combining of audio and visual modalities, which provide a synergy effect in terms of speech recognition accuracy. To establish a robust solution, basic research concerning the relation between the allophonic variation of speech, i.e., the changes in the articulatory setting of speech organs for the same phoneme produced in different phonetic environments and the objective signal parameters (both audio and video) is carried out. The method is sensitive to minute allophonic detail as well as to accentual differences. It is shown that by using the analysis of video signals together with the acoustic signal, speech transcription can be performed more accurately and robustly than by using the acoustic modality alone. In particular, various features extracted from the visual signal are tested for their abilities to encode allophonic variations in pronunciation. New methods for modeling the accentual and allophonic variation of speech are developed.

  • Methodology and technology for the polymodal allophonic speech transcription
    • Tomasz Ciszewski
    • Andrzej Czyżewski
    • Bożena Kostek
    2016 Journal of the Acoustical Society of America

    A method for automatic audiovisual transcription of speech employing: acoustic and visual speech representations is developed. It adopts a combining of audio and visual modalities, which provide a synergy effect in terms of speech recognition accuracy. To establish a robust solution, basic research concerning the relation between the allophonic variation of speech, i.e. the changes in the articulatory setting of speech organs for the same phoneme produced in different phonetic environments and the objective signal parameters (both audio and video) is carried out. The method is sensitive to minute allophonic detail as well as to accentual differences. It is shown that by using the analysis of video signals together with the acoustic signal, speech transcription can be performed more accurately and robustly than by using the acoustic modality alone. In particular, various features extracted from the visual signal are tested for their abilities to encode allophonic variations in pronunciation. New methods for modeling the accentual and allophonic variation of speech are developed.

  • Methodology of Affective Intervention Design for Intelligent Systems
    • Agnieszka Landowska
    • Mariusz Szwoch
    • Wioleta Szwoch
    2016 INTERACTING WITH COMPUTERS

    This paper concerns how intelligent systems should be designed to make adequate, valuable and natural affective interventions. The article proposes a process for choosing an affective intervention model for an intelligent system. The process consists of 10 activities that allow for step-by-step design of an affective feedback loop and takes into account the following factors: expected and desired emotional states, characteristics of the system and available input channels for emotion recognition. The proposed method is supported with three examples of intelligent systems that have used the process to design or to describe affective intervention. Two of them are case studies of affective video games that were designed with the proposed approach and evaluated against the non-affective versions. Another example described in the article is the affective tutoring system Gerda ,which exemplifies a more complex and sophisticated intervention model

  • Methods for Elucidation of DNA-Anticancer Drug Interactions and Their Applications in the Development of New Drugs
    • Majus Misiak
    • Francesco Mantegazza
    • Giovanni Beretta
    2016 CURRENT PHARMACEUTICAL DESIGN

    DNA damaging agents including anthracyclines, camptothecins and platinum drugs are among most frequently used drugs in the chemotherapeutic routine. Due to their relatively low selectivity for cancer cells, administration is associated with adverse side effects, whereas the inherent genotoxicity of these drugs is associated with risk of developing secondary cancers. Development of new drugs, which could be spared of these drawbacks and at the same would characterize with improved antitumor efficacy, remains challenging yet vitally important task. These properties are in large part dictated by the selectivity of interaction between the drug and DNA and in this way the studies aimed at elucidating the complex interactions between ligand and DNA represent a key step in the drug development. Studies of the drug-DNA interactions encompass determination of DNA sequence specificity and mode of DNA binding as well as kinetic, dynamic and structural parameters of binding. Here, we consider the types of interactions between small molecule ligands and polynucleotides, how they are affected by DNA sequence and structure and what is their significance for the antitumor activity. Based on this knowledge we discuss the wide array of experimental techniques available to researchers for studying drug-DNA interactions, which include absorption and emission spectroscopies, NMR, magnetic and optical tweezers or atomic force microscopy. We show, using the clinical and experimental anticancer drugs as examples, how these methods provide various types of information and at the same time complement each other to provide full picture of drug-DNA interaction and aid in the development of new drugs.

  • Methods for quality improvement of multibeam and LiDAR point cloud data in the context of 3D surface reconstruction
    • Marek Kulawiak
    • Zbigniew Łubniewski
    2016 Full text HYDROACOUSTICS

    Point cloud dataset is the transitional data model used in several marine and land remote-sensing applications. During further steps of processing, the transformation of point cloud spatial data to more complex models containing higher order geometric structures like edges and facets may be possible, if an appropriate quality level of input data is provided. Point cloud datasets usually contain a considerable amount of undesirable irregularities, such as strong variability of local point density, missing data, overlapping points and noise caused by scattering characteristics of the environment. For these reasons, processing such data can be quite problematic, especially in the field of object detection and three-dimensional surface reconstruction. This paper is focused on applying the proposed methods for reducing the mentioned irregularities from several datasets containing 3D point clouds acquired by multibeam sonars and LiDAR scanners. The article also presents the results obtained by each method, and discusses their advantages.

  • Methods of Network Resource Provisioning for the Future Internet IIP Initiative
    • Janusz Gozdecki
    • Mirosław Kantor
    • Krzysztof Wajda
    • Jacek Rak
    2016 Full text TELECOMMUNICATION SYSTEMS

    In this paper, we present specification, design and implementation aspects of a network resource provisioning module introduced for the Polish Initiative of Future Internet called System IIP. In particular, we propose a set of novel LP optimization models of network resource provisioning designed to minimize the network resource consumption, either bandwidth or node’s computational power, as well as to maximize the residual capacity. Next, we analyze characteristics of the proposed models, outline the most important implementation aspects of our network resource provisioning module, as well as the issues of integration of this module with the respective network management module of System IIP.

  • Methods of selenium supplementation. Bioavability and determination of selenium compounds
    • Małgorzata Bodnar
    • Marzena Szczygłowska
    • Piotr Konieczka
    • Jacek Namieśnik
    2016 CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION

    In This paper the method of supplementation of selenium in the environment and analytical methods of determining selenium were described

  • METHODS OF TEACHING NOISE PROTECTION AT ENVIRONMENTAL ENGINEERING
    • Dominika Wróblewska
    • Karol Daliga
    2016

    Noise strongly influences both our health and behavior in everyday life and as employees or employers. The lost of hearing and other effects of noise on humans result not only in a significant decrease in the quality of life or work efficiency but have also have economic consequences. As noise can be preventable in part by the Environmental Engineers, but it is necessary to introduce them noise issues during their education process. At the Gdansk University of Technology, students of the Faculty of Civil and Environmental Engineering are educated in environmental engineering, environmental protection or environmental management. The subject of Noise Protection is conducted for graduate students of master course of Environmental Engineering. The course is based on assumptions that noise issues will be connected with students’ future work and will have an influence on their everyday life. The objectives of the course are: 1) to provide the course participants with an understanding of noise, sounds various frequency and the effects on people; 2) to introduce students to the sources of noise and the noise issues environmental engineers face; 3) to present them the wide scope of noise protection methods used to lower environmental, building and architectural noise as well as the personal protection methods; 4) the practical exercises should refer to their profession or everyday life noise problems. The course has already been run for five years, based on traditional and collaborative learning. The last one was supported with blended-learning elements. The traditional hours are devoted to lectures, face-to-face consultation, group project work and open discussion. Moodle platform is used for activities such as: a database of students reports, lecture notes and data sources, assessing the results according to defined criteria, encouraging students to discuss main lecture topics. This article presents the essence, goals and tasks of the noise protection as well as the applicable approaches and methods of teaching, their correlation and effects. The author describes the structure of the Noise Protection course and detailed account of the role and importance of students practices and trainings. The conclusions drawn from the analysis of all activities will be used as guidelines for future improvements in teaching process.

  • Methods of the privatization process of Polish state-owned enterprises in years 1990‒2015
    • Robert Sterniński
    2016

    This article presents methods of the privatization process of state-owned enterprises in Poland in the period of years 1990‒2015. The author presents the change of number of state-owned companies over the selected period as well as describes the main methods of ownership transformation used in Poland. First part presents the mechanism of commercialization. Second discusses the indirect privatization and contribution to NFI. Next, the author describes the direct privatization which is realized by the sale of an enterprise, transfer capital to a company or donation for private usage. The final section describes the course of liquidation of state-owned enterprises together with summary