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Gdańsk University of Technology

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Publications from the year 2014

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  • Psychometric properties of the polish version of the job-related affective well-being scale
    • Beata Basińska
    • Ewa Gruszczyńska
    • Wilmar B. Schaufeli
    2014 Full text International Journal of Occupational Medicine and Environmental Health

    Objectives: The aim of this study was to verify psychometric properties of the Polish version of the Job-related Affective Well-being Scale (JAWS). Specifically, theoretical 4-factor structure (based on the dimensions of pleasure and arousal) and reliability of the original – 20-item JAWS (van Katwyk et al., 2000) and the shortened – 12-item (Schaufeli and Van Rhenen, 2006) versions were tested. Material and Methods: Two independent samples were analyzed (police officers, N = 395, and police recruits, N = 202). The Polish version of the original, 20-item, JAWS was used to measure job-related affective states across the past month (van Katwyk et al., 2000). This version of JAWS includes 2 dimensions: valence and arousal, which allow to assess 4 categories of emotions: low-arousal positive emotions, high-arousal positive emotions, lowarousal negative emotions and high-arousal negative emotions. Results: The results of multidimensional scaling analysis showed that the theoretical circumplex model of emotions underlining JAWS was satisfactorily reproduced. Also the hypothesized 4-factor structure of the Polish version of JAWS was confirmed. The 12-item version had better fit with the data than the original, 20-item, version, but the best fit was obtained for the even shorter, 8-item version. This version emerged from a multidimensional scaling of the 12-item version. Reliabilities of the 20- and 12-item versions were good, with lower values for the 8-item JAWS version. Conclusions: The findings confirmed satisfactory psychometric properties of both Polish versions of the Job-related Affective Well-being Scale. Thus, when both psychometric properties and relevance for cross-cultural comparisons are considered, the 12-item JAWS is recommended as a version of choice.

  • Quality assessment of ZnO-based varistors by 1/f noise
    • Lech Hasse
    • Sylwia Babicz-Kiewlicz
    • Leszek Kaczmarek
    • Janusz Smulko
    • Vlasta Sedlakova
    2014 Full text MICROELECTRONICS RELIABILITY

    Noise has been used as a diagnostic tool of surge arrester varistor structures comprising of ZnO grains of various type and size. The physical and electrical properties of the measured samples have been described. In the experimental study, the applied measurement system and the results of noise measurements for the selected structures of varistors designed for the continuous working voltage 280 V, 440 V and 660 V have been presented. Noise properties are related to electrical characteristics of the measured specimens giving more distinctive results than their voltage–current characteristics. It is suggested that the proposed procedure can be applied as an effective non-destructive testing method focused on defects and structural heterogeneity detection in the tested objects to assess their preparation processes.

  • Quality evaluation of agricultural distillates using different types of electronic noses
    • Tomasz Dymerski
    • Jacek Gębicki
    • Jacek Namieśnik
    2014

    The paper presents the results of investigation on quality evaluation of agricultural distillates using a prototype of electronic nose instrument and a commercial electronic nose of Fast/Flash GC type – HERACLES II. The prototype was equipped with TGS type semiconductor sensors. HERACLES II included two chromatographic columns with different polarity of stationary phase and two FID detectors. In case of the prototype volatile fraction of the agricultural distillate was prepared via barbotage process, whereas HERACLES II analysed the headspace fraction. Classification of the samples into three quality classes was performed using: quadratic discriminant function (QDA), supported with cross-validation method. Over 95% correct classification of the agricultural distillates into particular quality classes was observed for the analyses with HERACLES II. The prototype of electronic nose provided correct classification at the level of 70%.

  • Quantifying Contextuality
    • Andrzej Grudka
    • Karol Horodecki
    • Michał Horodecki
    • Paweł Horodecki
    • Ryszard Horodecki
    • P. Joshi
    • Waldemar Kłobus
    • Antoni Wójcik
    2014 PHYSICAL REVIEW LETTERS

    Contextuality is central to both the foundations of quantum theory and to the novel information processing tasks. Despite some recent proposals, it still faces a fundamental problem: how to quantify its presence? In this work, we provide a universal framework for quantifying contextuality. We conduct two complementary approaches: (i) the bottom-up approach, where we introduce a communication game, which grasps the phenomenon of contextuality in a quantitative manner; (ii) the top-down approach, where we just postulate two measures, relative entropy of contextuality and contextuality cost, analogous to existent measures of nonlocality (a special case of contextuality).We then match the two approaches by showing that the measure emerging from the communication scenario turns out to be equal to the relative entropy of contextuality. Our framework allows for the quantitative, resource-type comparison of completely different games. We give analytical formulas for the proposed measures for some contextual systems, showing in particular that the Peres-Mermin game is by order of magnitude more contextual than that of

  • Quantum corrections to quasi-periodic solution of Sine-Gordon model and periodic solution of phi^4 model
    • Grzegorz Kwiatkowski
    • Sergey Leble
    2014 Full text Journal of Physics : Conference Series

    Analytical form of quantum corrections to quasi-periodic solution of Sine-Gordon model and periodic solution of phi^4 model is obtained through zeta function regularisation with account of all rest variables of a d-dimensional theory. Qualitative dependence of quantum corrections on parameters of the classical systems is also evaluated for a much broader class of potentials u(x) = b^2 f(bx) + C with b and C as arbitrary real constants

  • Quantum structure in competing lizard communities
    • Diederik Aerts
    • Jan Broekaert
    • Marek Czachor
    • Maciej Kuna
    • Barry Sinervo
    • Sandro Sazzo
    2014 Full text ECOLOGICAL MODELLING

    Almost two decades of research on applications of the mathematical formalism of quantum theory as a modeling tool in domains different from the micro-world has given rise to many successful applications in situations related to human behavior and thought, more specifically in cognitive processes of decision-making and the ways concepts are combined into sentences. In this article, we extend this approach to animal behavior, showing that an analysis of an interactive situation involving a mating competition between certain lizard morphs allows to identify a quantum theoretic structure. More in particular, we show that when this lizard competition is analyzed structurally in the light of a compound entity consisting of subentities, the contextuality provided by the presence of an underlying rock-paper-scissors cyclic dynamics leads to a violation of Bell's inequality, which means it is of a non-classical type. We work out an explicit quantum-mechanical representation in Hilbert space for the lizard situation and show that it faithfully models a set of experimental data collected on three throat-colored morphs of a specific lizard species. Furthermore, we investigate the Hilbert space modeling, and show that the states describing the lizard competitions contain entanglement for each one of the considered confrontations of lizards with different competing strategies, which renders it no longer possible to interpret these states of the competing lizards as compositions of states of the individual lizards.

  • Quantum-state transfer in spin chains via isolated resonance of terminal spins
    • Kamil Korzekwa
    • Paweł Machnikowski
    • Paweł Horodecki
    2014 Full text PHYSICAL REVIEW A

    We propose a quantum-state transfer protocol in a spin chain that requires only the control of the spins at the ends of the quantum wire. The protocol is to a large extent insensitive to inhomogeneity caused by local magnetic fields and perturbation of exchange couplings. Moreover, apart from the free evolution regime, it allows one to induce an adiabatic spin transfer, which provides the possibility of performing the transfer on demand. We also show that the amount of information leaking into the central part of the chain is small throughout the whole transfer process (which protects the information sent from being eavesdropped) and can be controlled by the magnitude of the external magnetic field.

  • RADIATION OF HIGH INTENSITY SOUND BY CIRCULAR DISC BY MEANS OF THE NUMERICAL METHOD
    • Grażyna Grelowska
    • Eugeniusz Kozaczka
    2014 Full text HYDROACOUSTICS

    The main goal of this paper is to find sound pressure distribution radiated by the circular piezoelectric disc that vibrates with the finite amplitude. There has been presented the pressure distribution close to the radiating surface. Also it is shown the sound pressure distribution in the 3D form. The mathematic modeling was carried out on the base of the nonlinear acoustic equation with the proper boundary condition. The axial symmetry of radiation was assumed. The results have been shown in the form of pressure distribution at different distances from the source. The final results will be applied to the designing of the underwater sources of finite amplitude.

  • Radio programowalne - nowoczesna platforma dydaktyczna
    • Przemysław Falkowski-Gilski
    • Jacek Stefański
    2014 Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

    Przedstawiono technologię radia programowalnego jako nowoczesną platformę dydaktyczną. Zaproponowane podejście pozwala na efektywniejsze planowanie stanowisk laboratoryjnych. Umożliwia skrócenie czasu realizacji etapów związanych z projektowaniem, symulacją i testowaniem działania łącza radiowego. Pozwala również na elastyczną zmianę stanowisk laboratoryjnych zgodnie z dynamicznym rozwojem współczesnych systemów radiokomunikacyjnych.

  • Radiolokalizacja w środowisku wewnątrzbudynkowym
    • Agnieszka Czapiewska
    2014 Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

    W artykule przedstawiono metody wyznaczania położenia obiektów stosowane w radiolokalizacji oraz możliwości użycia tych metod w środowisku wewnątrzbudynkowym.

  • Radionawigacja w sieciach komórkowych CDMA2000
    • Jarosław Sadowski
    2014 Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

    W artykule przedstawiono wyniki badań dotyczących możliwości określania położenia odbiornika nawigacyjnego na podstawie sygnałów łącza w dół w sieci komórkowej CDMA2000. Przedstawione rozwiązanie nie wymaga aktywnej, dwukierunkowej komunikacji terminala z siecią komórkową i spełnia kryteria nawigacji z użyciem sygnałów przypadkowych.

  • Radionuclides activity and effective doses referred to geological formations
    • Anna Mykowska
    • Jan Hupka
    2014 Journal of Industrial and Intelligent Information

    Naturally occurring radioactive materials (NORM) are present in Earth’s crust and they caused natural background radiation, variable in different regions. Liquid, gas and solid radionuclides emit three types of radiation – alpha, beta and gamma. Fluctuations of natural radioactivity in different geological formations in the world and in Poland were compared in relation to radiological hazard. Also drilling cuttings from boreholes in Pomerania were investigated by a dosimeter to estimate absorbed doses associated with unconventional oil and gas exploration. It provides the possibility to verify the hazard of exposure to ionizing radiation from rocks during oil and gas activities in this area.

  • Radiosensitization of DNA in presence of Pt(II)-based compounds
    • Małgorzata Śmiałek-Telega
    • Sylwia Ptasińska
    • Jason Gow
    • Chiara Da Pieve
    • Nigel J. Mason
    2014 Full text EUROPEAN PHYSICAL JOURNAL D

    X-ray irradiation of plasmid DNA in presence of platinum (II)-based compounds was carried out in order to assess the radiosensitization capabilities of these drugs. In present investigations pBR322 plasmid DNA was used to monitor the effectiveness of chosen compounds in inducing strand breaks. Samples were incubated in the presence of potential radiosensitisers: platinum (II) bromide and cis-diamminedibromoplatinum (II). The results were examined against a common cancer chemotherapy drug cis-diamminedichloroplatinum (II). It was found that platinum (II) bromide can greatly increase the levels of single- and double-strand break formation observed in the irradiated samples with respect to the samples containing platinum as a radiosensitizer only, possessing very little chemotherapeutic activity. The suggested drugs exhibit much higher level of radiosensitivity than widely used cisplatin and thus may be good candidates for cancer treatment.

  • Rainscreen panels deformations mods
    • Piotr Lewandowski
    • Elżbieta Urbańska-Galewska
    2014

    In rainscreen panels designing simplified calculation models are used. For plate computation simply supported panels or panels with fixed edges are commonly used. Such approximations are subjected to large errors that lead to inefficient rainscreen panels design. In order to develop a method for determining the optimal geometry of the rainscreen panels, that would take into consideration the real stiffness of both continuous and point supports, a 1:1 scale tests and numerical analysis were carried out. These research allowed to determine characteristic forms of the rainscreen panels deformation.

  • Ranking of ecotoxisity tests for underground water assessment using the Hasse diagram technique
    • Błażej Kudłak
    • Stefan Tsakovsky
    • Vasil Simeonov
    • Agnieszka Tracz-Sagajdakow
    • Lidia Wolska
    • Jacek Namieśnik
    2014 CHEMOSPHERE

    The present study deals with the novel application of the Hasse diagram technique (HDT) for the specific ranking of ecotoxicity tests capable of assessment of underground water quality. The area studied is a multi-municipal landfill in the northern Poland. The monitoring network of the landfill constitutes of 27 piezometers for underground water monitoring and two observation points at surface water courses. After sampling, chemical analysis of various water parameters was performed (pH, conductivity, temperature, turbidity (TURB), color, taste, smell and atmospheric conditions: temperature, precipitation and cloud cover, heavy metals content, total organic carbon, sum of PAHs, Na, Mg, K, Ca, Mn, Fe, Ni, Alkalinity, general hardness, total suspended matter (SUSP), Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), chlorides, fluorides, sulphides, sulphates, ammonium nitrogen, total nitrogen, nitrate and nitrite nitrogen, volatile phenols, ether extracts (ETHER), dry residues (DRY_RES), dissolved compounds). Parallel to the chemical parameters assessment six different ecotoxicity tests were applied. In order to determine the applicability of the various ecotoxicity tests, a ranking of samples from different monitoring levels according to the test used (attributes) is done by using HDT. Further, the sensitivity of the biotests was determined and compared. From the sensitivity analysis of the both monitoring levels was evident that the choice of ecotoxicity tests could be optimized by the use of HDT strategy. Most reliable results could be expected by the application of root growth inhibition of Sorghum saccharatum (PGSS test). In order to clarify the relationship between the chemical parameters measured and each of the ecotoxicity tests a optimized similarity analysis between Hasse diagrams for the ecotoxicity tests for different levels of monitoring and Hasse diagrams obtained by the use of the chemical parameters was performed. Finally, it could be concluded that for reliable monitoring of underground waters passing a dump collector following chemical parameters are of significance: water hardness, dissolved matter, total nitrogen (ammonia and nitrate nitrogen), nickel, chlorides, alkalinity, total organic carbon and ether extract and the proper battery test could include PGSA, PGSS and PRSS.

  • Rapid EM-Driven Design of Compact RF Circuits By Means of Nested Space Mapping
    • Sławomir Kozieł
    • Adrian Bekasiewicz
    • Piotr Kurgan
    2014 IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS

    A methodology for rapid design of RF circuits constituted by compact microstrip resonant-cells (CMRCs) is presented. Our approach exploits nested space mapping (NSM) technology, where the inner SM layer is used to correct the equivalent circuit model at the CMRC level, whereas the outer layer enhances the coarse model of the entire structure under design. We demonstrate that NSM dramatically improves performance of surrogate-based optimization of composite CMRC-based structures. It is validated using four examples of UWB microstrip matching transformers (MTs) and compared to previous attempts to surrogate-based compact structure design.

  • RAPORT - EKSPERTYZA Badania diagnostyczne silników Mercedes-Benz typu 820N/1 na jednostce ORP SĘP
    • Zbigniew Korczewski
    • Ryszard Zadrąg
    • Jacek Rudnicki
    2014

    Ocena stanu technicznego dwóch silników Mercedes-Benz typu 820N/1 opracowana na podstawie przeglądu endoskopowego wewnętrznych przestrzeni chłodzenia głowic cylindrowych, wideoendoskopem firmy Everest typu XLG3, analizy właściwości fizykochemicznych oleju smarowego oraz oględzin zewnętrznych zdemontowanych części silników.

  • RAPORT - EKSPERTYZA Z POMIARÓW DRGAŃ LINII WAŁÓW NA JEDNOSTCE ORP „DĄBIE”
    • Zbigniew Korczewski
    • Jacek Rudnicki
    2014

    Ekspertyza diagnostyczna dotycząca stanu technicznego dwóch linii transmisji mocy (linii wałów) opracowana na podstawie przeprowadzonych pomiarów drgań w 26 punktach pomiarowych, przy jednoczesnej pracy silników napędowych L i PB (wspólnej pracy linii wałów obu burt), w II zakresach ustalonego obciążenia „pół-naprzód” i „cała-naprzód”. Pomiary prędkości i przyspieszeń drgań generowanych przez węzły konstrukcyjne okrętowego układu napędowego wykonano po naprawie głównej układu napędowego w celu określenia jego stanu dynamicznego. Analizę wyników pomiarów przeprowadzono zgodnie z zaleceniami normy ISO 10816. W przypadku oceny stanu dynamicznego silników napędowych klasyfikacji dokonano w oparciu o załącznik do normy ISO 10816 - ISO – 10816 - 6 „Mechanical vibration — Evalua-tion of machine vibration by measurements on non-rotating parts. PART 6 Reciprocating machines with power rating above 100 kW”.

  • RAPORT - EKSPERTYZA Z POMIARÓW DRGAŃ LINII WAŁÓW NA JEDNOSTCE ORP „RESKO”
    • Zbigniew Korczewski
    • Jacek Rudnicki
    2014

    Ekspertyza diagnostyczna dotycząca stanu technicznego dwóch linii transmisji mocy (linii wałów) opracowana na podstawie przeprowadzonych pomiarów drgań w 26 punktach pomiarowych, przy jednoczesnej pracy silników napędowych L i PB (wspólnej pracy linii wałów obu burt), w II zakresach ustalonego obciążenia „pół-naprzód” i „cała-naprzód”. Pomiary prędkości i przyspieszeń drgań generowanych przez węzły konstrukcyjne okrętowego układu napędowego wykonano po naprawie głównej układu napędowego w celu określenia jego stanu dynamicznego. Analizę wyników pomiarów przeprowadzono zgodnie z zaleceniami normy ISO 10816

  • Raport z badań materiałowych rurociągu instalacji wody chłodzącej hydrozespołu HZ-4 z Elektrowni Wodnej Żarnowiec
    • Jerzy Łabanowski
    • Maria Głowacka
    • Krzysztof Krzysztofowicz
    2014

    Wykonano badania materiałowe fragmentów rurociągów instalacji wody chłodzącej hydrozespołu. Zakres pracy obejmował analizę chemiczną stali rurociągu, badania makroskopowych uszkodzeń rurociągu, badania EDX osadów i produktów korozji występujących na powierzchni wewnętrznej rurociągu, badania mikroskopowe uszkodzeń i oceny stanu rurociągu