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Gdańsk University of Technology

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Publications from the year 2018

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  • In-situ odd random phase electrochemical impedance spectroscopy study on the electropolymerization of pyrrole on iron in the presence of sodium salicylate – The influence of the monomer concentration
    • Karolina Cysewska
    • Lucia Fernandez Macia
    • Piotr Jasiński
    • Annick Hubin
    2018 ELECTROCHIMICA ACTA

    In this work, the potentiostatic electropolymerization of polypyrrole (PPy) on iron in aqueous solution of sodium salicylate and pyrrole is studied in situ by odd random phase electrochemical impedance spectroscopy (ORP-EIS). The influence of the pyrrole concentration on the electrosynthesis process is investigated. The ORP-EIS technique ensures a reliable analysis of the PPy electrosynthesis on iron by means of an advanced data analysis of the non-linear and non-stationary behaviour and the signal-to-noise ratio of the system. Additionally, the structure and the chemical nature of the PPy film on iron are studied by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and glow discharge optical emission spectroscopy (GDOES). The results of the characterization confirm the presence of the passivation layer at the PPy/iron interface formed prior to the polymer deposition. The modelling of the impedance evolution over time provides the quantitative analysis of the electropolymerization of PPy on iron. The results show that the electrosynthesis of pyrrole on oxidizable iron in the presence of sodium salicylate is a complex process, which includes not only the pyrrole oxidation reactions but also reactions such as the oxidation/reduction of the iron surface and/or reactions between the iron, formed interlayer and polypyrrole.

  • Instrument detection and pose estimation with rigid part mixtures model in video-assisted surgeries
    • Daniel Węsierski
    • Anna Węsierska
    2018 MEDICAL IMAGE ANALYSIS

    Localizing instrument parts in video-assisted surgeries is an attractive and open computer vision problem. A working algorithm would immediately find applications in computer-aided interventions in the operating theater. Knowing the location of tool parts could help virtually augment visual faculty of surgeons, assess skills of novice surgeons, and increase autonomy of surgical robots. A surgical tool varies in appearance due to articulation, viewpoint changes, and noise. We introduce a new method for detection and pose estimation of multiple non-rigid and robotic tools in surgical videos. The method uses a rigidly structured, bipartite model of end-effector and shaft parts that consistently encode diverse, pose-specific appearance mixtures of the tool. This rigid part mixtures model then jointly explains the evolving tool structure by switching between mixture components. Rigidly capturing end-effector appearance allows explicit transfer of keypoint meta-data of the detected components for full 2D pose estimation. The detector can as well delineate precise skeleton of the end-effector by transferring additional keypoints. To this end, we propose effective procedure for learning such rigid mixtures from videos and for pooling the modeled shaft part that undergoes frequent truncation at the border of the imaged scene. Notably, extensive diagnostic experiments inform that feature regularization is a key to fine-tune the model in the presence of inherent appearance bias in videos. Experiments further illustrate that estimation of end-effector pose improves upon including the shaft part in the model. We then evaluate our approach on publicly available datasets of in-vivo sequences of non-rigid tools and demonstrate state-of-the-art results.

  • Instrumental measurement of odour nuisance in city agglomeration using electronic nose
    • Bartosz Szulczyński
    • Tomasz Dymerski
    • Jacek Gębicki
    • Jacek Namieśnik
    2018

    The paper describes an operation principle of odour nuisance monitoring network in a city agglomeration. Moreover, it presents the results of investigation on ambient air quality with respect to odour obtained during six-month period. The investigation was carried out using a network comprised of six prototypes of electronic nose and Nasal Ranger field olfactometers employed as a reference method. The monitoring network consisted of two measurement stations localized in a vicinity of crude oil processing plant and four stations localized near the main emitters of volatile odorous compounds such as sewage treatment plant, municipal landfill, phosphatic fertilizer production plant. The electronic nose prototype was equipped with a set of six semiconductor sensors by FIGARO Co. and one PID-type sensor. The field olfactometers were utilized for determination of mean concentration of odorants and for calibration of the electronic nose prototypes in order to provide their proper operation. Mean monthly values of odour concentration depended on the site of measurement and on meteorological parameters. They were within 0 – 6.0 ou/m3 range. Performed investigations revealed the possibility of electronic nose instrument application as a tool for monitoring of odour nuisance.

  • Instrumenty pochodne w bilansach polskich przedsiębiorstw
    • Ewa Mazurek-Krasodomska
    • Anna Rzeczycka
    • Gabriela Golawska-Witkowska
    2018 Full text PRACE NAUKOWE UNIWERSYTETU EKONOMICZNEGO WE WROCŁAWIU

    Celem niniejszego artykułu jest identyfikacja obszarów działalności przedsiębiorstw niefinansowych wykazujących w swoich sprawozdaniach finansowych instrumenty pochodne oraz analiza wykorzystania tych instrumentów przez wybrane przedsiębiorstwa notowane na giełdzie. Ponadto analizie poddano korelacje pomiędzy wartościami instrumentów pochodnych wykazanych w bilansach tych przedsiębiorstw i wybranymi wielkościami ekonomicznymi je charakteryzującymi. Spośród 199 przedsiębiorstw prowadzących działalność gospodarczą w obszarze zidentyfikowanym na podstawie danych GUS wyselekcjonowano 141 spełniających kolejne kryteria, a mianowicie osiągających roczne przychody powyżej 100 mln zł i sporządzających sprawozdania finansowego według standardów MSSF. Analiza ta została przeprowadzona na podstawie danych pochodzących ze sprawozdań finansowych badanych podmiotów zaczerpniętych z bazy EMIS. Wyniki przeprowadzonych badań zostały porównane z danymi publikowanymi przez GUS.

  • Integracja mechanizmów transportowych dla sieci o nieciągłej i sporadycznej łączności w systemie netBaltic
    • Wojciech Gumiński
    2018 Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

    W pracy zaprezentowano mechanizmy integracji modułu transportowego dla obszarów o nieciągłej i sporadycznej łączności z innymi mechanizmami systemu netBaltic (Internet na Bałtyku) oraz wyniki testów laboratoryjnych i morskich przekazywania wiadomości.

  • Integrate-and-fire models with an almost periodic input function
    • Piotr Kasprzak
    • Adam Nawrocki
    • Justyna Signerska-Rynkowska
    2018 Full text JOURNAL OF DIFFERENTIAL EQUATIONS

    We investigate leaky integrate-and-fire models (LIF models for short) driven by Stepanov and μ-almost periodic functions. Special attention is paid to the properties of the firing map and its displacement, which give information about the spiking behavior of the considered system. We provide conditions under which such maps are well-defined and are uniformly continuous. We show that the LIF models with Stepanov almost periodic inputs have uniformly almost periodic displacements. We also show that in the case of μ-almost periodic drives it may happen that the displacement map is uniformly continuous, but is not μ-almost periodic (and thus cannot be Stepanov or uniformly almost periodic). By allowing discontinuous inputs, we extend some previous results, showing, for example, that the firing rate for the LIF models with Stepanov almost periodic input exists and is unique. This is a starting point for the investigation of the dynamics of almost-periodically driven integrate-and-fire systems.

  • Integrated functional safety and cyber security analysis
    • Marcin Śliwiński
    • Emilian Piesik
    • Jan Piesik
    2018 IFAC-PapersOnLine

    The chapter is devoted some important issues of the functional safety analysis, in particular the safety integrity level (SIL) verification of safety functions to be implemented within the distributed control and protection systems with regard to security aspects. A method based on quantitative and qualitative information is proposed for the SIL (IEC 61508, 61511) verification with regard of the evaluation assurance levels (EAL) (ISO/IEC 15408), the security assurance levels (SAL) (IEC 62443), and the number of protection rings described in the Secure Safety (SeSa-SINTEF) methodology. The proposed approach will be composed of the following items: process and procedure based safety and security management, integrated safety and security assessment of industrial control system (ICS) of the critical infrastructure.

  • Integrated information and prediction Web Service WaterPUCK General concept
    • Lidia Dzierzbicka-Głowacka
    • Maciej Janecki
    • Beata Szymczycha
    • Dawid Dybowski
    • Artur Nowicki
    • Żaneta Kłostowska
    • Hanna Obarska-Pempkowiak
    • Piotr Zima
    • Beata Jaworska-Szulc
    • Jaromir Jakacki
    • Adam Szymkiewicz
    • Stefan Pietrzak
    • Grażyna Pazikowska-sapota
    • Ewa Wojciechowska
    • Grażyna Dembska
    • Marcin Wichorowski
    • Michał Białoskórski
    • Tadeusz Puszkarczuk
    2018 Full text

    In this paper, general concept of a new method as ‘Integrated information and prediction Web Service WaterPUCK’ for investigation influence of agricultural holdings and land-use structures on coastal waters of the southern Baltic Sea is presented. WaterPUCK Service is focused on determination of the current and future environmental status of the surface water and groundwater located in the Puck District (Poland) and its impact on the Bay of Puck (the southern Baltic Sea) environment. It will highly desired tool for land-use and environment management. WaterPUCK combines several different components and methods such as retrospective analyses of existing monitoring data sets, in situ measures and the application of various models to estimate main mechanisms and threats responsible for the pollution transport from the agricultural holdings and land-use structure to the surface and groundwater and potential predictability of environment change of the Puck District and the Bay of Puck ecosystem. WaterPUCK Service will integrate several models, such as a surface water model based on SWAT, a groundwater flow model based on MODFLOW, a 3D-ecohydrodynamic model of the Bay of Puck called EcoPuckBay and an agriculture calculator called CalcGosPuck. The WaterPUCK Service is constructed as part of the project with the same name ‘WaterPUCK’.

  • Integrated spatial and energy planning – importance of a problem for contemporary architects and urban planners with focus on environmental factors
    • Julia Kurek
    2018 Full text Przestrzeń Ekonomia Społeczeństwo

    Along with respecting basic sustainable development goals, planners will also be obliged to meet more stringent provisions related to energy efficiency in the coming years. In Poland, a crucial year will be 2021, when the EU directive on the energy efficiency of buildings comes into force. In this matter, not only the characteristics of individual objects are of great importance, but their whole complexes and the overall approach to planning - considering the surroundings and referring to the urban scale. The purpose of this article is to indicate the main reasons for turning to integrated energy and spatial planning. It also explains the controversial issues related to speculated climate change and their potential relationship with the construction sector. In addition, the article presents arguments referring to ecological factors as well as basic issues related to the evolution of urban areas and socio-economic factors.

  • Integration in Multichannel Emotion Recognition
    • Grzegorz Brodny
    • Agnieszka Landowska
    2018 Full text

    The paper concerns integration of results provided by automatic emotion recognition algorithms. It presents both the challenges and the approaches to solve them. Paper shows experimental results of integration. The paper might be of interest to researchers and practitioners who deal with automatic emotion recognition and use more than one solution or multichannel observation.

  • Integration of a Multilevel Transport System Model into Sustainable Urban Mobility Planning
    • Romanika Okraszewska
    • Aleksandra Romanowska
    • Marcin Wołek
    • Jacek Oskarbski
    • Krystian Birr
    • Kazimierz Jamroz
    2018 Full text Sustainability

    When planning their transport policy, cities usually focus on developing sustainable transport systems and reducing the negative consequences of transport. One way to deliver transport policies is to use the Sustainable Urban Mobility Plan (SUMP), a strategic document designed to meet the demand for mobility whilst ensuring adequate quality of life for the residents. The process of Sustainable Urban Mobility Planning (SUMP process) can be supported by using a transport model. The objective of this article is to analyse the efficacy of the Multilevel Model of Transport Systems—referred to by its acronym, MST—for the SUMP process. With its ability to represent the transport system’s behaviour depending on the level of detail, the MST can significantly benefit the SUMP process. The proposed concept of integration of the MST into the SUMP process has already been tested and applied in delivering Gdynia’s (Poland) SUMP. The paper suggests ways to use the MST at different levels of planning and modelling and describes the outcomes. Using the multilevel structure helps to fully realise the transport model’s potential to improve the effectiveness of urban mobility planning. The conclusions show that the methods proposed in the article are worthwhile and cities should consider them when planning the SUMP process.

  • Integration of Lean Manufacturing with ISO Management Systems in Enterprise
    • Marek Wirkus
    • Anna Chmielarz
    2018 Full text Management and Production Engineering Review

    Lean manufacturing [LM], quality management system and environmental management system are clear initiatives with a goal of improving effectiveness and efficiencies of organizations. Many organisations tackle lean philosophy, ISO standards individually but this kind of attempt do not focus on the synergy and the advantage from the potential collaboration. This paper aims to present the possibility of integration Lean Management concept with ISO management systems – Quality Management System [QMS] ISO 9001and Environmental Management System [EMS] ISO 14001 already implemented in the enterprises. The integration of these three concepts can be obtain due to improvement of main KPI’s defined in the organization. Based on critical research literature and participant observation presented as a case study (one of the author of the paper works as a consultant and is being implemented Lean Manufacturing concept in different organization since ten years) authors defined concept of integration of EMS and QMS (already implemented in the organization) with chosen Lean Management tools. Concept has been developed based on literature analysis and experience of the authors. Results and summary from concept implementation has been described in last chapter of the paper.

  • Integration of the Eurasian Economic Union in Comparison to European Union Integration
    • Inna Suchkova
    2018 Full text

    The aim of the article is to show the specificity of the integration of the Eurasian Economic Union (EEU) on the example of the integration of the European Union (EU). The EEU is a relatively young grouping that was established in 2015 by Republic of Armenia, the Republic of Belarus, the Republic of Kazakhstan, the Kyrgyz Republic and the Russian Federation. Its creators try to give the Eurasian integration process a different direction in contrast to the structures that were created in the post-Soviet space. The EU was founded in 1993, but the beginning of the foundation falls on 1957, in which the treaties establishing the European Economic Community were signed by six founding countries: France, Germany, Italy, Belgium, the Netherlands and Luxembourg. The article presents the functioning of the EEU, its objectives, assumptions and forecasts for the further process of merging national economies.

  • Interactive Application for Visualization of the Basic Phenomena in RF and Microwave Devices
    • Sebastian Dziedziewicz
    • Maciej Jasiński
    • Rafał Lech
    • Piotr Kowalczyk
    2018 Full text

    An interactive computer application visualizing the basic phenomena in RF and microwave devices is presented. Such kind of educational package can be a very helpful tool for the students as well as for the teachers (of electronics and related fields). This paper is focused on three exemplary problems only and involves: movement of electric charge, filtering of electromagnetic waves and interference phenomena in antenna arrays. The main part of the application (engine) is based on standard techniques. The package is designed in a game form which should increase the attractiveness of the application and improves learning outcomes.

  • Interatomic potential suitable for the modeling of penta-graphene: Molecular statics/molecular dynamics studies
    • Szymon Winczewski
    • Mohamad Yousef Shaheen
    • Jarosław Rybicki
    2018 Full text CARBON

    We test the potentials available for elemental carbon, with the scope to choose the potential suitable for the modeling of penta-graphene, the latest two dimensional carbon allotrope. By using molecular statics and molecular dynamics simulations we show that there is only one potential e namely the Tersoff-type potential proposed by Erhart and Albe in 2005 e which is able to correctly describe all the important features of penta-graphene. We show that this potential gives structural, mechanical and energetic parameters which are in accordance with the previously reported ab initio results.

  • Interdependence of Ratios in Banking Stability Pentagon
    • Katarzyna Kubiszewska
    2018 Full text Studia i Materiały Wydział Zarządzania Uniwersytet Warszawski

    The banking sector is one of the key sectors in every economy, therefore, the issue of stability is one of the main interests not only of researchers but also policy-makers. The stability of the banking sector is especially important during a process of transformation. The aim of this article is to present a new tool for estimating the stability of the banking sector as a whole. Although the tool can be used to estimate the level of stability for all countries, the relationships between the various variables and interdependence of the ratios used in the tool will differ between the countries surveyed, as tested in the article. The study is based on selected countries from two regions: the Western Balkans and the Baltic Sea states that are either in the process of transformation or have just completed the process. Due to the choice of the banking sectors being studied, it was possible to perform a comparative analysis between countries that have already completed the transformation process and those that are currently in the transformation process. The survey is based on quarterly data for the period Q1, 2010 – Q1, 2016. The data has been sourced from the International Monetary Fund.

  • Interdisciplinary e-collaboration tools / Narzędzia interdyscyplinarnej e-współpracy
    • Ewa Kozłowska
    2018 Full text Edukacja Ustawiczna Dorosłych

    W projektach interdyscyplinarnych niezwykle ważnym czynnikiem jest aktywne konsultowanie i bezpośrednie zastosowanie relatywnie nowo powstałej dziedziny zwanej współpracą interdyscyplinarną. Nawiązywanie interdyscyplinarnej współpracy przynosi wiele korzyści, jednakże niejednokrotnie wiąże się z licznymi problemami i niedogodnościami, a także koniecznością ciągłego doszkalania się i rozszerzania kompetencji zawodowych. Na podstawie przeglądu dostępnych programów oraz różnego rodzaju platform wspierających współpracę i edukację online dokonano porównania dostępnych narzędzi współpracy i zaproponowano rozwiązanie opierające się na platformie LMS Moodle. W celu sprawdzenia przydatności i poprawności działania wybranego rozwiązania nawiązano współpracę z przedstawicielami środowisk technicznych, medycznych i biznesowych w celu utworzenia grupy testowej. Zebrane informacje posłużyły do sformułowania wniosków oraz do powstania instrukcji przygotowującej wybrane oprogramowanie do potrzeb e-współpracy interdyscyplinarnej.

  • Internacjonalizacja szkolnictwa wyższego a jakość- akredytacje i rankingi w życiu uczelni
    • Magdalena Popowska
    2018 Dzień Jakości PG

    Internacjonalizacja szkolnictwa wyższego wiąże się z wieloma wyzwaniami organizacyjnymi oraz merytorycznymi. niniejszy artykuł jest próbą powiązania zjawiska umiędzynarodowienia z wyzwaniami odnośnie jakości kształcenia, ze szczególnym uwzględnieniem roli rankingów i akredytacji.

  • INTERNAL DETERMINANTS OF FIRMS’ INNOVATIVENESS
    • Elżbieta Wojnicka-Sycz
    • Piotr Sycz
    • Piotr Walentynowicz
    • Jarosław Waśniewski
    2018 Full text Operations Research and Decisions

    This article presents an analysis of the determinants of a firm’s innovativeness deriving from its internal potential and characteristics. The analysis is based on research carried out on 1355 firms that applied for public subsidies from the Innovative Economy Operational Program in 2014. The methods applied are logit regression, comparative analysis and literature review. The analysis is structured ac- cording to Bielski’s model of an organization indicating the following subsystems: management, goals and values, people, technology and structure. This analysis shows that firms’ innovativeness depends mainly on the following factors: their level of cooperation with academia, longer presence on the mar- ket, being highly equipped with modern technologies, being a medium-sized or large firm, as well as being an industrial rather than a service firm. All of the organizational subsystems play a role in deter- mining innovativeness, but the most important ones are the technical subsystem, psycho-social subsys- tem and the subsystem of structure.

  • International trade and containerization - certain trends after the financial crisis of 2007-2008
    • Adam Lewiński
    2018 Full text

    The following article presents the situation on international trade and the global maritime container transport market after the financial crisis of 2007-2008. In the first part the author focuses on describing the specifics of containerization in global trade. The following parts include characteristic of container terminal operators and shipping lines. Finally, significant changes in the global container handling market after the financial crisis are presented.