Publications Repository - Gdańsk University of Technology

Page settings

polski
Publications Repository
Gdańsk University of Technology

Show publications from the year

Publications from the year 2018

Show all
  • Smart Innovation Engineering: Toward Intelligent Industries of the Future
    • Edward Szczerbicki
    • Mohammad Waris
    • Cesar Sanin
    2018 Full text CYBERNETICS AND SYSTEMS

    Knowledge-based Engineering Systems are founded upon integration of knowledge into computer systems and are one of the core requirements for the future Industry 4.0. This paper presents a system called Smart Innovation Engineering (SIE) capable of facilitating product innovation process semi-automatically. It enhances decision-making processes by using the explicit knowledge of formal decision events. The SIE system carries the promise to support the innovation processes of manufactured products in a quick and efficient way. It stores and reuses past decisional events or sets of experiences related to innovation issues, which significantly enhances innovation progression. The analysis of basic concepts and implementation method proves that SIE system is an advanced form of Cyber Physical Systems. It is flexible, systematic, fast, and supports customization. It can play a vital role towards Industry 4.0 development.

  • Smart skills and education in a future economy
    • Franciszek Kutrzeba
    2018 Full text e-mentor

    Whether the role of education is to prepare people for employment or to have meaningful lives in general, it will identify and develop skills and competencies, as well as vocational and personal attributes. Skills, such as critical thinking, novel ideation, and complex cognitive and social skills, are areas where humans continue to outperform smart machines. The purpose of this article is to review the skills and competencies that will be in demand in the future, with an eye to recent technological changes. First, macroeconomic data concerning higher education will be reviewed in order to illustrate the situation of tertiary education, with a focus on Poland. A significant decline in demand for tertiary education has been observed in Poland in the last few years, despite the good returns on investment in education, which are the highest among the OECD countries. The empirical part of this paper presents results of a pilot survey that aimed to provide insight into several key competencies and vocational attributes that are perceived to be relevant for a future economy, according to Polish employers. The primary data was collected manually, using a quantitative survey on three occasions at two different job fairs in Gdansk in March 2017. Work experience, new media literacy, and formal education were assessed as least relevant variables (x=13); learning and diligence were assessed as most relevant according to the studied target group (n=55). Furthermore, the study showed specific differences in perception, depending on the size of the employer.

  • Smart Specializations as Innovative Ecosystems
    • Elżbieta Wojnicka-Sycz
    • Piotr Sycz
    2018

    In the article it is showed that regional smart specializations that are currently the most important tool of the European innovation policy may be perceived, and if effective should constitute, innovative ecosystems. The article presents the concepts of smart specializations and innovative ecosystems. The concept of innovative ecosystem is, in the article, presented from the perspective of its foundation and relations to other concepts and theories. Cooperation in innovation process of varied actors is by authors considered as the major feature of both smart specializations and innovative ecosystems. The results of research carried out by authors and showing crucial role of the cooperation in innovation process for the results in terms of innovation and competitiveness of firms as well as regional development are presented. These research results also show that firms in smart specializations are more R&D&I intensive and more prone to cooperation than other companies and that smart specializations have positive effects on regional development. The applied methods are desk research and literature review as well as direct research based on a survey and econometric analysis of the results of the survey.

  • Smart Weighing Scale with Feet-Sampled ECG
    • Adam Bujnowski
    • Kamil Osiński
    • Artur Poliński
    • Tomasz Kocejko
    • Piotr Przystup
    • Diana Bogusz
    • Jerzy Wtorek
    2018 Full text

    In a smart home, health and well-being monitoring systems could be embedded in everyday devices providing a pervasive care. A home bathroom scale is an example of such a device, typically used to measure body weight and very often its composition (e.g. body water/fat percentage). In this paper, we analyzed a potential use of the bathroom scale to measure electrocardiogram (ECG) from electrodes located on the scale's tile. In particular we used both, simulations and real measurements to analyze the possibility of a such approach. We originally created a simple finite element model to analyze a role of a vector cardiogram projected on the foot-foot lead. We also analyzed results obtained during experiments in which took part (in total) 13 healthy volunteers. They were examined both, in sitting and standing positions. As a result we showed that the quality of the recorded ECG signal from feet is highly related to the electrical vector orientation of the individual's heart. We additionally compared the detected QRS complexes from hands-and feet-sampled ECG for sitting and standing positions. Results showed that for the sitting position the difference was only for 3.6% of all QRS complexes, while for standing one about 24.9%.

  • Snapshot of micro-animals and associated biotic and abiotic environmental variables on the edge of the south-west Greenland ice sheet
    • Krzysztof Zawierucha
    • Sara Lehmann-Konera
    2018 Full text LIMNOLOGY

    Microinvertebrates play a role as top consumers on glaciers. In this study we tested what kind of cryoconite material the animals inhabit (mud vs granules) on the edge of the Greenland ice sheet (GrIS) in the south-west. We also tested the links between the densities of micro-fauna in cryoconite material and selected biotic (algae, cyanobacteria, bacterial abundances) and abiotic (water depth, pH, ion content, radionuclides) factors. We collected 33 cryoconite samples. Tardigrada and Rotifera were found in 18 and 61% of samples, respectively. Invertebrates in this study were considerably less frequent and less abundant in comparison with High Arctic glaciers. The highest density of tardigrades and rotifers constituted 53 and 118 ind./ml, respectively. Generalized linear models showed no relationship between the densities of fauna and biotic and abiotic factors. The densities of animals were significantly higher in granules than in mud. The difference in the densities of animals between granules and mud reflects a simple mechanistic removal of invertebrates from the sediment during its erosion by flushing which leads to mud formation. These processes may influence a random distribution of micro-fauna without clear ecological interactions with biotic and abiotic variables at the edge of the GrIS.

  • Social Entrepreneurship and Social Enterprise Phenomenon: Antecedents, Processes, Impact across Cultures and Contexts
    • Marzena Starnawska
    • Agnieszka Brzozowska
    2018 Full text Journal of Entrepreneurship, Management and Innovation

    .

  • Social media and efficient computer infrastructure in smart city
    • Jerzy Balicki
    • Honorata Balicka
    • Piotr Dryja
    • Maciej Tyszka
    2018

    Social media require an efficient infrastructures of computer and communication systems to support a smart city. In a big city, there are several crucial dilemmas with a home and public space planning, a growing population, a global warming, carbon emissions, a lack of key resources like water and energy, and a traffic congestion. In a smart city, we expect an efficient and sustainable transportation, efficient management of resources and a better urban planning. In this paper, social media are proposed to support smart city with efficient computer infrastructure. Moreover, some methods are described to increase the availability and efficiency of an information infrastructure. Two criteria have been formulated to assign some key resources in a smart city system. The process of finding some compromise solutions from Pareto-optimal solutions has been illustrated. Metaheuristics o f collective intelligence, including particle swarm optimization PSO, ant colony optimization ACO, an algorithm of bee colony ABC, and differential evolution DE have been described due to smart city infrastructure improving. Other application of above metaheuristics in smart city have been also presented.

  • Social Media and Knowledge Sharing – What Do We Know So Far?
    • Dušan Mladenović
    • Anida Krajina
    • Wioleta Kucharska
    2018 Full text

    The aim of this paper is to examine previous studies on topic of social media and how it influences knowledge sharing online and thereafter establish respective body of knowledge. The background investigation has been organized as a theoretical review with qualitative premises. The multi-layered Systematic Literature Review process has been utilized and carried out to fetch the most relevant peer-reviewed researches in the past. To the best of authors’ knowledge no such a study has been performed earlier. It is intended that this review should determine research frontier and provide overview of what exactly, in what fashion and how profound has been investigated. This study may have not assured full coverage of the topic in question. However, based on the chosen methodology authors do assume that study covers large portion of studies available. The predicted benefits for academia are mainly two-fold. Firstly, it might lead to further researches by pointing out the places whereby such an additional research is desired. Secondly, it will consolidate findings from articles and present them in comprehensive conceptual manner together with all accompanying details.

  • Social media for e-learning of citizens in smart city
    • Jerzy Balicki
    • Honorata Balicka
    • Piotr Dryja
    • Maciej Tyszka
    2018

    The rapid development of social media can be applied for citizens’ e-learning in a smart city. Big cities have to cope with several open issues like a growing population or a traffic congestion. Especially, a home and public space is supposed to be used in more efficient way. Sustainable homes and buildings can be planned with using some modern techniques. Even currently, there is a huge problem with a lack of key resources like water and energy. So, an efficient management of resources is strongly required. What is more, a global warming and carbon emissions are considered as some critical factors for living conditions in many cities, too. A vision of a smart city is related to a better protection of a natural environment and a more efficient use of it. Moreover, citizens expect an efficient and sustainable transportation in livable city. To present some solutions on above issues, this paper outlines the methodology of using social media to provide necessary knowledge by citizenship training systems. In particular, some selected e-learning applications have been characterized. They are related to pedagogical agents in e-learning. In addition, some advanced meta-heuristics have been proposed with particular emphasis on genetic programming, artificial neural networks, neuro-evolution algorithms, support vector machines, and some collective intelligence algorithms. Finally, cloud services are discussed regarding a smart city management and training.

  • Soil-structure interaction effects on modal parameters of office buildings with different number of stories
    • Natalia Lasowicz
    • Tomasz Falborski
    2018 Full text MATEC Web of Conferences

    The paper summarizes the results of a numerical investigation designed to study the soil-structure interaction effects on modal parameters of three office buildings. The reinforced-concrete 4-storey, 8-storey, and 12-storey office buildings, each with additional two levels of embedded basements, represent low, medium, and high-rise structures, respectively. In order to conduct this research, detailed finite-element structure models were prepared. Soil-foundation flexibility was represented with the use of spring-based solutions, incorporating foundation springs and dashpots. The influence of diverse soil conditions (represented by their average effective profile velocities and shear moduli) on the dynamic characteristics of the analyzed three office buildings (e.g. fundamental vibration periods) was investigated and discussed.

  • Solar light driven degradation of norfloxacin using as-synthesized Bi 3+ and Fe 2+ co-doped ZnO with the addition of HSO 5 – : Toxicities and degradation pathways investigation
    • Noor Shah
    • Javed Khan
    • Murtaza Sayed
    • Zia Khan
    • Allah Rizwan
    • Nawshad Muhammad
    • Grzegorz Boczkaj
    • Behzad Murtaza
    • Muhammad Imran
    • Hasan Khan
    • Gohar Zaman
    2018 CHEMICAL ENGINEERING JOURNAL

    In this study, solar light responsive Bi3+ and Fe2+ doped ZnO were synthesized and used for photocatalytic degradation of norfloxacin (NOR), an emerging water pollutant. Analysis with Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), and UV-vis diffuse reflectance spectroscopy (DRS) confirmed coupling of dopants (i.e., Bi3+ and Fe2+) or co-dopants (Bi3+/Fe2+) with ZnO and suggested small narrow size as well as highly crystalline and porous nature of the doped ZnO. Metal ions doping lowered band gap energy and inhibited recombination of electron-hole pair in the as-synthesized ZnO. Consequently, BiFe-ZnO showed enhanced photocatalytic activity and reusability, giving 80% removal of NOR as compared to 36% by un-doped ZnO at a reaction time of 120 minutes. The analysis with photoluminescence (PL) technique verified high yield of •OH from solar light activation of BiFe-ZnO compared to Bi-ZnO, Fe-ZnO and ZnO. Performance of the as-prepared photocatalysts was promoted with the added HSO5– and increased with increasing [HSO5–]0. Degradation of NOR by BiFe-ZnO with the added HSO5– was due to •OH and SO4•− and NOR showed high reactivity with •OH and SO4•−. The removal efficiency of NOR was inhibited using •OH and SO4•− scavengers. Photocatalytic activity of the as-synthesized photocatalysts with the added HSO5– was highly dependent on [NOR]0, [pH]0, co-existing ions, and natural organic matter. Degradation pathways were suggested from the pattern of NOR degradation and identified transformation products. The mineralization of NOR as well as formation of non-toxic end product suggests co-doped ZnO with added HSO5– to be a potential technology for treating antibiotics contaminated water.

  • Solubilization of keratins and functional properties of their isolates and hydrolysates
    • Izabela Sinkiewicz
    • Hanna Staroszczyk
    • Agata Sommer
    2018 Full text JOURNAL OF FOOD BIOCHEMISTRY

    The keratinous wastes of the textile industry and poultry slaughterhouses may be used as sources of soluble keratins or hydrolysates. This review presents methods for processing raw keratin-based materials into bioproducts with functional and bioactive properties suitable for biomedical, cosmetic, food, and agricultural applications. Soluble keratin can be obtained by thermal treatment in some organic solvents, reduction, or oxidation of the disulfide bonds. Recent studies have shown that keratins contain amino acid sequences with high biological activities such as antioxidant, angiotensin I converting enzyme inhibitory, dipeptidyl peptidase IV inhibitory, and antimicrobial. Peptides containing these sequences may find numerous applications as value-added products in the food industry. More research devoted to development of methods for conversion of animal by-products to novel products is needed. Further technological investigations to create large-scale production methods are also necessary.

  • Solvation of ionic liquids based on N -methyl- N -alkylmorpholinium cations in N,N -dimethylformamide and N,N -dimethylacetamide – Volumetric and compressibility studies
    • Łukasz Marcinkowski
    • Adam Kloskowski
    • Dorota Warmińska
    2018 JOURNAL OF CHEMICAL THERMODYNAMICS

    Density and sound velocity of the solutions of ionic liquids based on N-alkyl-N-methyl- morpholinium cations: N-ethyl- -methylmorpholinium bis(trifluoromethanesulfonyl)imide, N-butyl-Nmethylmorpholinium bis(trifluoromethanesulfonyl)imide, N-octyl-N-methyl -morpholinium bis(trifluor omethanesulfonyl)imide and N-decyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide in N, N-dimethylformamide and N,N-dimethylacetamide were measured at T = (298.15–318.15) K and at atmospheric pressure. Using experimental data, apparent molar volume and apparent molar compressibility values were calculated and fitted to the Redlich-Meyer type equation which was used to obtain partial molar volume and partial molar isentropic compressibility of the ILs at infinite dilution. By using the density data, the isobaric thermal expansibility coefficients were also estimated. The effect of alkyl chain length of the ILs, experimental temperature and properties of solvent on these thermodynamic properties were discussed.

  • Solving the Problem of Dynamic Adaptability of Artificial Intelligence Systems that Control Dynamic Technical Objects
    • V. V. Khilenko
    • Ryszard Strzelecki
    • I. Kotuliak
    2018 CYBERNETICS AND SYSTEMS ANALYSIS

    This paper investigates the increase in the response speed and stability of artificial intelligence systems that control dynamic technical objects. The problem of calculating the optimal time of switching an artificial intelligence system between software classes by the criterion of the rigidity degree of the model of a control object is considered. The solution of this problem is proposed for the general case of the control object dynamics when the rigidity of the mathematical model can significantly change during functioning and it is necessary to dynamically determine the moment of transition from standard methods of numerical integration to specialized numerical methods intended for calculating rigid dynamic models.

  • Some Introductory and Historical Remarks on Mechanics of Microstructured Materials
    • Francesco dell'Isola
    • Victor Eremeev
    2018

    Here we present few remarks on the development of the models of microstuctured media and the generalized continua.

  • SORPTION OF SELECTED CHLORINATED SOLVENTS ON PLANT DEBRIS COLLECTED IN A CITY PARK
    • Marek Tobiszewski
    • Jacek Namieśnik
    2018 Full text Environmental Engineering and Management Journal

    Debris from deciduous trees in the form of park green waste was investigated as a potential biosorbent for the removal of chlorinated solvents from water. The sorption properties of beech leaves and cupules, oak leaves and acorns, birch leaves and lime leaves (all tree species common for a moderate climate) in a non-modified form were investigated with regard to the removal of perchloroethylene, 1,1,2-trichloroethane and 1,1,1,2-tetrachlorothane. The preliminary results showed that these biosorbents are characterized by very similar sorption properties as well as the surface area and elemental composition. Therefore the sorption capacities and rate constants were determined in the mixture of debris sampled from park green waste. The values of sorption capacity and partitioning coefficient of biosorbent mixture varied from 22.4 to 70 μg g-1, and from 28 to 173 L kg-1 respectively. The pseudo-first order reaction kinetics model was fitted to the experimental data, yielding rate constants in the range 0.0187-0.0223 min-1. Due to the lowest polarity, perchloroethylene was a sorbate with the highest affinity for sorbent surface. The results show that chlorinated solvents can be sorbed on park green waste. Although park green waste displays weak sorption capacity, it might be still an attractive sorbent due to good availability and low cost.

  • Sound quality metrics applied to road noise evaluation
    • Karolina Marciniuk
    • Bożena Kostek
    2018 Journal of the Acoustical Society of America

    Road noise monitoring systems typically measure sound levels in specific time periods. The more insightful approach suggests to measure also the nature of noise. Sound quality of sounds such as car noise can be objectively evaluated by several parameters. One of them is psychoacoustic annoyance, described by loudness, tone color, and the temporal structure of sound. In this paper the assessment of several sound quality parameters, such as: loudness of time-varying noise, sharpness, fluctuation strength, and roughness, as well some additional parameters borrowed from the Music Information Retrieval area are presented. Then a comparison between parameter values obtained by means of the professional measurement system and a tool working in the Matlab environment is performed. The conducted investigations are carried out using recorded samples of an individual vehicle 1930 J. Acoust. Soc. Am., Vol. 144, No. 3, Pt. 2, September 2018 ASA Fall 2018 Meeting/2018 Acoustics Week in Canada 1930 pass-by in close proximity of the road, organized as a database of road traffic noise recordings.

  • Sources of Market Information, Its Quality and New Product Financial Performance
    • Dariusz Dąbrowski
    2018 Full text Inzinerine Ekonomika-Engineering Economics

    While we observe a growing interest in the role of market information in new product development (NPD), existing research has still largely ignored the quality of market information that is a crucial issue in the era of the information society. What does affect the quality of market information in new product development projects, and how does this quality influence the financial performance of new products? In this paper, we address these questions and hypothesize that sources of information (e.g. customers, competitors) influence the quality of market information, and this quality affects new product financial performance through market predictability as a mediator. We test these hypotheses using data of about 287 new product projects of medium-high and high technology firms from Poland. Our findings indicate that the key sources that influence market information quality are customers and competitors. More intensive collection of market information from these two sources, and especially from customers, will result in this information being of a higher quality. Surprisingly, gathering market information from other market entities (e.g. suppliers, distributors) has no effect on the quality of market information. We also find that an important consequence of high quality market information available in NPD is high new product financial performance. Additionally, market information quality positively influences market predictability that, in turn, has a positive impact on new product performance. Our results support a partial mediation effect of market predictability between the quality of market information and NPD financial performance. Based on these findings, the author discusses the theoretical and managerial implications of this work and proposes paths for future research

  • “Space & Satellite Technologies" intercollegiate master-degree courses of study in Tri-City (Poland)
    • Marek Chodnicki
    • Edmund Wittbrodt
    • Adam Dąbrowski
    • Zbigniew Łubniewski
    2018

    Since summer semester of the academic year 2016/2017, two faculties of Gdansk University of Technology GUT (Faculty of Mechanical Engineering and Faculty of Electronics, Telecommunications and Informatics) together with the Gdynia Maritime University (Faculty of Electronics) and the Polish Naval Academy in Gdynia (Faculty of Command and Naval Operations) have opened intercollegiate master - degree studies called: Space and Satellite Technologies (TKiS). Each of these faculties offer for their candidates and conduct special education in case of certain speciality. This initiative is supported by Polish Space Agency and received additional funding from the National Centre for Research and Development. Under the project entitled: Adaptation of the second -degree studies Space and Satellite Technologies, to the needs of the labor market, people involved in the space industry were included in the didactics.

  • SPATIAL APPROACH TO HETEROGENEITY OF INFLATION EXPECTATIONS IN THE EURO AREA
    • Magdalena Szyszko
    • Karolina Tura-Gawron
    2018

    In this article, we examine the spatial heterogeneities in inflation expectations of the euro area consumers. We expect to find them heterogeneous in our research period of 2001-2016. Contrary to standard examination of heterogeneity, a spatial correlation analysis is applied by referring to global and local correlation measures. It is performed with the economic distance-based weights (the difference in HICP rates). Application of spatial analysis is the main contribution of our examination. Standard examinations ignore spatial relations and might be misleading. Our findings suggest that expectations are heterogeneous once the differences of inflation rates represent economic distance between the countries that we cover by our examination.