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Gdańsk University of Technology

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Publications from the year 2022

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  • CSR at HEIs: Between Ignorance, Awareness and Knowledge
    • Julita Wasilczuk
    • Magdalena Popowska
    2022 Full text Problemy Zarządzania

    The paper focuses on CSR education in Higher Education Institutions. It analyzes current approaches to this education and the enhancements already deployed in the international perspective. The main aim is to conceptualize CSRS education forms within the context of technology-oriented HEIs and propose the model for this education. This model has also been partially verified using the cases of four technical universities. This research uses qualitative and quantitative research methods. The literature review is applied to trace HEIs’ educational and organizational CSR commitment methods. Based on this review, we proposed a model of CSRS education in HEIs. Using this model, we checked to what extent its elements are used in four technical universities from Latvia, Lithuania, Ukraine and Poland. For this purpose, educational programs at universities were analyzed. We also confronted the activity of these universities with the students’ knowledge about CSRS. The results of the survey conducted among 3,424 students from these universities contributed to elaborating on this aspect. Findings: The results confirm that students are ignorant of CSR, even those studying at business faculties. What is surprising, even those students who are business owners do not demonstrate a high level of knowledge about CSR. Universities, on the other hand, do not offer the possibility of eliminating this ignorance. Meanwhile, we believe they can do so not only through the standing-alone CSRS education but also by including CSR in other courses and by giving a good example. Due to language barriers, the submitted model was only partially verified at selected universities. We are also aware that the described situation may be one-sided as the four cases presented in this study are homogeneous, as they represent technical universities, so only one profile among a variety of universities’ profiles (technical versus humanities versus economic). Bearing in mind the current level of implementation of education in the area of CSR and the results of the research carried out, we propose a model of education that includes three pillars: a good example of a university (socially responsible university), is responsible managers education (RME) and raising awareness among students of non-business faculties (ASR). At the same time, we indicated alarge gap between the educational needs in the area of CSRS and the offer of four technical universities.

  • Cu supported on various oxides as a candidate catalyst for dry methane reforming in DIR-SOFCs systems
    • Adrian Mizera
    • Patryk Błaszczak
    • Beata Bochentyn
    • Radosław Lach
    • Ewa Drożdż
    2022 Full text INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

    A series of Cu-support systems were tested as potential candidates for DIR-SOFC (Direct Internal Reforming SOFC) catalysts towards a dry reforming of methane (DRM). The various supports (-Al2O3, CeO2, ZrO2, SrTiO3) with comparable specific surface area (SSA), and additionally -Al2O3 with SSA an order of magnitude larger than that of the other supports has been applied. The obtained Cu-support systems were characterized in terms of structure (XRD, XPS), microstructure (SEM), redox properties (TPR /TPOx), and next their catalytic activity and selectivity in DRM reaction were tested. All Cu-support materials show catalytic activity in DRM reaction, but only activity of Cu-SrTiO3 is high (due to the incorporation of Cu into SrTiO3 structure). The catalytic activity of other materials depends on the copper oxidation state (Cu2+ and Cu+). The highest catalytic activity in DRM process was obtained for Cu-AlO(OH) catalyst thanks to an order of greater SSA than in the case of other systems.

  • Cu-Doped Layered Double Hydroxide Constructs the Performance-Enhanced Supercapacitor Via Band Gap Reduction and Defect Triggering
    • Xianyu Chu
    • Fanling Meng
    • He Yang
    • Wei Zhang
    • Tingting Qin
    • Zizhun Wang
    • Sebastian Molin
    • Piotr Jasiński
    • Weitao Zheng
    2022 ACS Applied Energy Materials

    Layered double hydroxides (LDHs) are regarded as the excellent electrode materials for supercapacitors because of their high theoretical capacitance and abundance. However, the poor conductivity and limited reaction kinetics of LDHs restrict their practical application severely. Herein, Cu is chosen from groups VIII/IB/IIB as dopants for Co-based LDH (CuCo-LDH). The designed metal–organic framework-derived hierarchical CuCo-LDH hollow nanoarrays integrated on nickel foam are fabricated via a facile in situ hydrolysis method. Consequently, the introduction of copper significantly enhances the local electron density of cobalt-based hydroxide, which enhances electronic conductivity and facilitates the charge transfer. Copper doping induces lattice defects, providing more active sites to improve the charge storage capacity. As a result, our CuCo-LDH electrode delivers a package-enhanced pseudocapacitive performance. The as-fabricated asymmetric supercapacitor CuCo-LDH//AC provides a relatively high energy density of 22 W h kg–1 and a remarkable cycling stability (91.3% after 10,000 cycles) towards practical applications of supercapacitors.

  • CULTURAL DETERMINANTS OF EVIDENCE-BASED HUMAN RESOURCES MANAGEMENT: A CROSS-COUNTRY ANALYSIS
    • Łukasz Sienkiewicz
    2022 Full text Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

    Purpose: This paper aims at providing comparative analysis of the influence of cultural determinants on the managers’ perceptions of human resources management practices, as a factor conditioning application of evidence-based management. Design/methodology/approach: This article presents the study of 121 managers in Poland, on their perception of HRM practices and analyses the consistency of findings with the Hofstede cultural dimensions model. Structured questionnaire developed by Rynes et al. (2002) in the US and used by Tenhiälä et al. (2016) in Finland, Spain and South Korea including 34 items on management practices, employment practices, training and development, staffing and compensation and benefits have been used. Comparative analysis of managers’ perceptions in 5 countries have been performed, and analysed from the perspective of cultural determinants. Findings: Significant differences among analysed countries have been noted in relation to managers’ perceptions of HRM practices, interpreted using the Hofstede’s model of cultural determinants. Five dimensions have been identifies as the most likely determinant of observable differences. Cultural factors have been found to explain perceptions of HRM practices in Poland, as well as in countries with both similar cultural dimensions profiles or shared characteristics. Research limitations/implications: The empirical part – questionnnaire in Poland – was performed during Covid-19 pandemic, which might have affected the perceptions of managers on what works in relation to HRM practices, as well as the external conditions under which the research was performed changed significantly over the course of last two years. Practical implications: Findings from the managers’ survey have been analysed from the perspective of cultural determinants, therefore making a link between perceptions and measurable and well defined variables of cultural origin, as represented by Hofstede’s dimensions. This implies, that more attention should be paid to culturally-grounded differences in cases where more evidence-based practices are intended to be implemented in organisations. Originality/Value: Paper presents original research findings, by providing comparative evidence on the managers’ perceptions of HRM practices in cross-cultural context, with application of the Hofstede cultural dimensions model.

  • Curlicues generated by circle homeomorphisms
    • Justyna Signerska-Rynkowska
    2022 Full text GEOMETRIAE DEDICATA

    We investigate the curves in the complex plane which are generated by sequences of real numbers being the lifts of the points on the orbit of an orientation preserving circle homeomorphism. Geometrical properties of these curves such as boundedness, superficiality, local discrete radius of curvature are linked with dynamical properties of the circle homeomorphism which generates them: rotation number and its continued fraction expansion, existence of a continuous solution of the corresponding cohomological equation and displacement sequence along the orbit.

  • CURRENT SITUATION ON THE POLAND REAL ESTATE MARKET
    • Tetiana Osadcha
    • Oleksandr Melnychenko
    2022 Full text Współpraca Europejska

    In recent years the polish real estate market has been characterised by a significant increase in supply and demand. This was facilitated by a number of macroeconomic factors. In recent years, housing has been commissioned as 30 years ago. Therefore, the depth analysis issue of the causes and consequences for the Polish economy of these trends is now relevant. Among the reasons are significant economic growth, low interest rates on loans, rising welfare, low unemployment, stable inflation and, of course, the COVID-19 pandemic. We assess these and other reasons in this article in order to further forecast the real estate market's indicators. In addition, the Poland society is characterised by a significant proportion of those who want to own housing, not rent it. This is due to historical events and the incomes level of the population, which is still one of the poorest among the European Union member states, therefore real estate ownership is a sign of households' stability and economic security. At the same time, the purchase of housing is influenced by rather low interest rates on loans, which encourage the population to use the opportunities to buy housing on credit. That is why a significant amount of real estate is built for credit resources and purchased in this way.

  • Current Trends in Wick Structure Construction in Loop Heat Pipes Applications: A Review
    • Paweł Szymański
    • Dariusz Mikielewicz
    • Sasan Fooladpanjeh
    2022 Full text Materials

    Thermal control systems have been introduced as an important part of electronic devices, enabling thermal management of their electronic components. Loop heat pipe (LHP) is a passive two-phase heat transfer device with significant potential for numerous applications, such as aerospace applications, high-power LEDs, and solar central receivers. Its advantages are high heat transfer capability, low thermal resistance, long-distance heat transfer, and compact structure. The essential role of wick structures on the performance of LHPs has already been highlighted, but no comprehensive review is available that deals with different parameters such as LHP design and wick size, which are largely decisive and effective in achieving a practical level of thermal transmission governed by wick structures. To rely on this necessity, this article summarizes, analyzes, and classifies advancements in the design and fabrication of wick structures. The main conclusion to be drawn after careful monitoring and weighing of the related literature is that LHPs with composites and additively manufactured wicks show a higher heat transfer coefficient than other conventional structures. Indeed, future works should be focused on the design of more structurally efficient wicks, which may allow us to optimize materials and geometrical parameters of wick structure for higher heat transfer through LHPs.

  • Customizing nano-chitosan for sustainable drug delivery
    • Mostafa Saeedi
    • Omid Vahidi
    • Mohammad Reza Moghbeli
    • Sepideh Ahmadi
    • Mohsen Asadnia
    • Omid Akhavan
    • Farzad Seidi
    • Mohammad Rabiee
    • Mohammad Saeb
    • Thomas J. Webster
    • Rajender S. Varma
    • Esmaeel Sharifi
    • Ali Zarrabi
    • Navid Rabiee
    2022 JOURNAL OF CONTROLLED RELEASE

    Chitosan is a natural polymer with acceptable biocompatibility, biodegradability, and mechanical stability; hence, it has been widely appraised for drug and gene delivery applications. However, there has been no comprehensive assessment to tailor-make chitosan cross-linkers of various types and functionalities as well as complex chitosan-based semi- and full-interpenetrating networks for drug delivery systems (DDSs). Herein, various fabrication methods developed for chitosan hydrogels are deliberated, including chitosan crosslinking with and without diverse cross-linkers. Tripolyphosphate, genipin and multi-functional aldehydes, carboxylic acids, and epoxides are common cross-linkers used in developing biomedical chitosan for DDSs. Methods deployed for modifying the properties and performance of chitosan hydrogels, via their composite production (semi- and full-interpenetrating networks), are also cogitated here. In addition, recent advances in the fabrication of advanced chitosan hydrogels for drug delivery applications such as oral drug delivery, transdermal drug delivery, and cancer therapy are discussed. Lastly, thoughts on what is needed for the chitosan field to continue to grow is also debated in this comprehensive review article.

  • Czy ja umyłem ręce? Jak skutecznie dezynfekować i po co
    • Bartłomiej Cieślik
    2022 Full text

    Układ immunologiczny człowieka jest niezwykłym systemem, który stopniem złożoności dorównuje skomplikowaniu relacji ekonomicznych centralnej Europy. Ludzie zdają się być niezwykle odporny na ataki patogenów lecz nawet tak zaawansowane układy ja układ odpornościowy człowieka czasem zawodzą. Wiedza na temat prawidłowych metod stosowania oraz skuteczności poszczególnych środków dezynfekcyjnych może być kluczowa do utrzymania bezpiecznych relacji w społeczeństwie ogarniętym pandemią. Racjonalne użytkowanie antyseptyków oraz rozważne stosowanie antybiotyków również może mieć wpływ na rozwój przyszłych zagrożeń epidemiologicznych.

  • Czy kurtoza mierzy spiczastość rozkładu?
    • Błażej Kochański
    2022 Full text Wiadomości Statystyczne

    Celem artykułu jest przedstawienie i uzasadnienie interpretacji klasycznego współczynnika kurtozy jako miary grubości ogonów oraz zaproponowanie modyfikacji treści dydaktycznych w tym zakresie. W wielu polskich podręcznikach akademickich podaje się, że współczynnik kurtozy (lub ekscesu) mierzy „wysmukłość”, „spiczastość” lub „spłaszczenie” rozkładu. Taka interpretacja jest nieprawidłowa. Kurtoza mierzy bowiem w istocie stopień rozproszenia wartości cechy w ogonach rozkładu lub – innymi słowy – intensywność wartości skrajnych. W artykule wskazano, dlaczego starsze interpretacje, mówiące o kształcie wierzchołka krzywej gęstości, są niewłaściwe. Zaprezentowano przykładowe leptokurtyczne rozkłady spłaszczone i platykurtyczne rozkłady wysmukłe. Na podstawie danych z Diagnozy Społecznej z lat 2000–2015 wykazano, że w badaniach empirycznych wartość kurtozy wynika ze stopnia natężenia wartości odstających. Zaproponowano nowe sformułowania, które można wykorzystać w dydaktyce statystyki zamiast nieprawidłowych, stosowanych dotychczas.

  • Damage imaging algorithm for non-destructive inspection of CFRP/steel adhesive joints based on ultrasonic guided wave propagation
    • Erwin Wojtczak
    • Magdalena Rucka
    2022 Full text COMPOSITE STRUCTURES

    The paper concerns assessing the quality of the adhesive connection between a steel plate and the reinforcing CFRP laminate. A three-stage algorithm for non-destructive damage imaging was developed. As the first step, an initial study involving dispersion curves of joint components was executed to determine the material parameters and the appropriate excitation frequency. During the second step, damage identification in three-layer joints was performed using the weighted root mean square (WRMS) of the guided wave signals. A novel approach to determine the optimal values of WRMS parameters was proposed. Within the third step, the guided wavefield was recorded by scanning laser vibrometry. Visualization of the distribution of WRMS values on the surface of scanned specimens allowed efficient damage imaging. The application of statistical analysis (histograms) was used to prepare the final damage maps. The results of the investigations showed the high usefulness of the developed approach for imaging both intentionally introduced and unintended defects in adhesive joints.

  • Data Analysis in Bridge of Data
    • Wojciech Artichowicz
    • Krzysztof Drypczewski
    • Jerzy Proficz
    2022 Full text

    The chapter presents the data analysis aspects of the Bridge of Data project. The software framework used, Jupyter, and its configuration are presented. The solution’s architecture, including the TRYTON supercomputer as the underlying infrastructure, is described. The use case templates provided by the Stat-reducer application are presented, including data analysis related to spatial points’ cloud-, audio- and wind-related research.

  • Data and knowledge supporting decision-making for the urban Food-Water-Energy nexus
    • Mei-Hua Yuan
    • Joanna Bach-Głowińska
    • Pei-Te Chiueh
    • Yu-Sen Chang
    • Hsin-hsin Tung
    • Yu Chang-Ping
    • Hwong-wen Ma
    • Jacek Łubiński
    • Lo Shang-Lien
    2022

    Cities are hubs of innovation and wealth creation, and magnets for an increasing urban population. Cities also face unprecedented challenges in terms of food, water and energy scarcity, and governance and management. Urban environmental issues are no longer problems for experts to address but have become issues of public debate, in which knowledge from multiple sectors is needed to support inclusive governance approaches. Consequently, this chapter presents a knowledge platform to support policymakers, programme officers, field staff and others to help integrate Food-Water-Energy nexus considerations and goals into policy formulation and implementation for cities. In this context, this chapter begins with a qualitative literature review of the nexus concept. This is interpreted broadly in order to consider as wide a range of potential practices and processes as possible. Recommendations are presented for research and development, testing and implementation, as well as knowledge and communication. From this, findings and recommendations are synthesised into an appropriate framework to enable the Food-Water-Energy nexus, and these are provided at the end of this chapter. This chapter can serve as a useful reference for those working on policy and planning related to the Food-Water-Energy nexus at the urban level for regions worldwide.

  • Data Compression in Ultrasonic Network Communication via Sparse Signal Processing
    • Beata Zima
    • Octavio Reyes Márquez
    • Masoud Mohammadgholiha
    • Jochen Moll
    • Luca Marchi De
    2022 Full text

    This document presents the approach of using compressed sensing in signal encoding and information transferring within a guided wave sensor network, comprised of specially designed frequency steerable acoustic transducers (FSATs). Wave propagation in a damaged plate was simulated using commercial FEM-based software COMSOL. Guided waves were excited by means of FSATs, characterized by the special shape of its electrodes, and modeled using PIC255 piezoelectric material. The special shape of the FSAT, allows for focusing wave energy in a certain direction, accordingly to the frequency components of its actuation signal, which makes a larger monitored area available. The process begins when a FSAT detects and records reflection from damage in the structure, this signal is then encoded and prepared for transmission, using a combined approach, based on Compressed Sensing Matching Pursuit and Quadrature Amplitude Modulation (QAM). After codification of the signal is in binary, the information is transmitted between the nodes in the network. The message reaches the last node, where it is finally decoded and processed, to be used for damage detection and localization purposes. The main aim of the investigation is to determine the location of detected damage using reconstructed signals. The study demonstrates that the special steerable capabilities of FSATs, not only facilitate the detection of damage but also permit transmitting the damage information to a chosen area in a specific direction of the investigated structure.

  • Data from the Survey on Entrepreneurs’ Opinions on Factors Determining the Employment of the Gdańsk University of Technology Graduates
    • Michał Tomczak
    2022 Full text

    The dataset includes data from a survey on factors determining the employment of the Gdańsk University of Technology (Gdańsk Tech) graduates’ in the opinion of entrepreneurs. The survey was conducted in 2017. The research sample included 102 respondents representing various firms from the Pomeranian Voivodeship, Poland. The study concerned i.a. factors determining the decision to hire a candidate, methods of recruiting employees, methods for diagnosing the competencies of candidates, and opinions on recruiting Gdańsk Tech graduates who do not have extensive professional experience, considering variables such as the company size and business sector. To summarise, the entrepreneurs focus on the diagnosis of candidates’ competencies during a job interview, and have nothing against employing inexperienced graduates.

  • Data from the Survey on Gdańsk University of Technology Graduates’ Professional Careers
    • Michał Tomczak
    2022 Full text

    The dataset titled Data from the survey on Gdańsk University of Technology graduates’ professional careers includes data from a survey of Gdańsk University of Technology (Gdańsk Tech) graduates’ professional careers. The survey was conducted in 2017, two years after the respondents obtained graduate status. The research sample included 2553 respondents. The study concerned, i.a. the percentage of people working among graduates of the Gdańsk Tech, length of the job search period, job position, economic sector, company size, amount of remuneration, and also considers variables such as the faculty graduated. Summarising, the graduates’ general situation within the labour market was very good.

  • De la façon dont les réseaux sociaux se croisent dans la vie des migrants
    • David Duenas Cid
    2022

    Éste es un texto muy complicado de titular. A pesar de lo sugerente de la idea de escribir acerca de dos conceptos intensamente relacionados, como son el de migración y el de redes. Esta misma intensidad en su interrelación implica una multiplicidad de sentidos que complican el trabajo explicativo del científico social, por su cuantioso número de opciones, y el trabajo comprensivo del lector, por la posible confusión que esta situación genera.

  • Deciphering the Molecular Mechanism of Substrate-Induced Assembly of Gold Nanocube Arrays toward an Accelerated Electrocatalytic Effect Employing Heterogeneous Diffusion Field Confinement
    • Paweł Niedziałkowski
    • Adrian Koterwa
    • Adrian Olejnik
    • Artur Zieliński
    • Karolina Górnicka
    • Mateusz Brodowski
    • Robert Bogdanowicz
    • Jacek Ryl
    2022 Full text LANGMUIR

    The complex electrocatalytic performance of gold nanocubes (AuNCs) is the focus of this work. The faceted shapes of AuNCs and the individual assembly processes at the electrode surfaces define the heterogeneous conditions for the purpose of electrocatalytic processes. Topographic and electron imaging demonstrated slightly rounded AuNC (average of 38 nm) assemblies with sizes of ≤1 μm, where the dominating patterns are (111) and (200) crystallographic planes. The AuNCs significantly impact the electrochemical performance of the investigated electrode [indium–tin oxide (ITO), glassy carbon (GC), and bulk gold] systems driven by surface electrons promoting the catalytic effect. Cyclic voltammetry in combination with scanning electrochemical microscopy allowed us to decipher the molecular mechanism of substrate-induced electrostatic assembly of gold nanocube arrays, revealing that the accelerated electrocatalytic effect should be attributed to the confinement of the heterogeneous diffusion fields with tremendous electrochemically active surface area variations. AuNC drop-casting at ITO, GC, and Au led to various mechanisms of heterogeneous charge transfer; only in the case of GC did the decoration significantly increase the electrochemically active surface area (EASA) and ferrocyanide redox kinetics. For ITO and Au substrates, AuNC drop-casting decreases system dimensionality rather than increasing the EASA, where Au–Au self-diffusion was also observed. Interactions of the gold, ITO, and GC surfaces with themselves and with surfactant CTAB and ferrocyanide molecules were investigated using density functional theory.

  • Decisional DNA (DDNA) Based Machine Monitoring and Total Productive Maintenance in Industry 4.0 Framework
    • Syed Imran Shafiq
    • Cesar Sanin
    • Edward Szczerbicki
    2022 Full text CYBERNETICS AND SYSTEMS

    The entire manufacturing spectrum is transforming with the advent of Industry 4.0. The features of Set of Experience Knowledge Structure (SOEKS) and Decisional DNA (DDNA) were utilized for developing Virtual Engineering Objects (VEO), Virtual Engineering Process (VEP) and Virtual Engineering Factory (VEF), which in turn facilitate the creation of smart factories. In this study, DDNA based Machine Monitoring for Total Maintenance in Industry 4.0 framework is demonstrated. The concept of VEO is used for the Tool and Equipment Monitoring, while for the Plants Operations Monitoring and Quality Monitoring, VEP and VEF are employed. Query extraction feature of DDNA is exploited for Adaptive Control. This study shows that Machine Efficiency (ME) can be monitored along with analysis of machine KPI’s like breakdown time, setting time, and other losses. Moreover, reports can be generated efficiency-wise, breakdown-wise, operator-wise. The data of these reports is used to predict and make future decisions related to machine maintenance.

  • Deep eutectic solvent (DES) with silver nanoparticles (Ag-NPs) based assay for analysis of lead (II) in edible oils
    • Hameed Haq
    • Rafiat Bibi
    • Muhammad Balal
    • Faisal Safi
    • Sana Ullah
    • Roberto Castro-Muñoz
    • Grzegorz Boczkaj
    2022 Full text FOOD CHEMISTRY

    This paper presents an application of silver nanoparticles impregnated by Deep Eutectic Solvents (DES) as ultrasonication aided microextraction system for lead (II) determination in edible oils. The paper presents a systematic optimization of method parameters and examples of its application for analysis of real samples. Maximum recovery for lead (II) extraction was obtained for choline chloride and phenol with a 1:2 molar ratio. Optimum extraction conditions for 2g oil sample post-digested solution (10 mL, pH=2) require 1mL of Ag-nanoparticles solution (0,1mM) and per each 500 µL of DES and tetrahydrofurane. The limit of detection (LOD) and quantification (LOQ) were 0.28 µg/L and 0.94 µg/L. The developed method covers the entire range of expected levels of lead concentration in oil samples -parts per billion levels to higher ones. This method is many folds faster (only 6.5 minutes/sample are needed) as well as more sensitive comparing to already reported methods.