2013 - Repozytorium publikacji - Politechnika Gdańska

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Publikacje z roku 2013

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Nasyp z geosyntetycznym wzmocnieniem podstawy posadowiony na pionowych elementach nośnych
- Angelika Duszyńska
- Monika Makasewicz-Dzieciniak
2013 Pełny tekst Inżynieria Morska i Geotechnika
W artykule przedstawiono zapisy aktualnych wytyczne niemieckich EBGEO 2010 dotyczących projektowania nasypów ze wzmocnieniem geosyntetycznym podstawy posadowionych na pionowych elementach nośnych. Szczegółowo omówiono metodę obliczeniową powołaną w wytycznych EBGEO 2010 w świetle najnowszych badań.
Naturalne związki organiczne
- Aleksander Kołodziejczyk
2013
Książka zawiera dwanaście rozdziałów merytorycznych, w których omówiono występowanie, właściwości, otrzymywanie i zastosowanie następujących naturalnych organicznych: aminokwasy, peptydy, białka, cukry, lipidy, alkaloidy, steroidy, kwasy nukleinowe, polifenole i flawonoidy, hormony owadzie i roślinne, terpenoidy i izoterpenoidy oraz związki sygnałowe (feromony).
Navigare necesse est, czyli o niełatwym życiu żeglarza
- Marta Szeluga-Romańska
2013
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Neoneo-Kantianizm - Transcendental Philosophy as a Reflection on Validity (Geltung)
- Andrzej Lisak
2013 DIALOGUE AND UNIVERSALISM
The article presents the philosophical thought of Rudolf Zocher, Wolfgang Cramer and Hans Wagner, whose theoretical stance can be dubbed Neoneo-Kantianism. The article investigates their philosophical output and argues that they developed a transcendental reflection of a different kind than that of Baden Neo-Kantianism. The transcendental reflection of Neoneo-Kantianism, especially in the work of Hans Wag-ner, takes on the topic of phenomenological inquiry and treats consciousness as a source of subject-object distinction, unlike Rickert and Windelband, who were developing transcendental reflection focused on aprioristic forms of cognition, much in the post-Fichtean vein, thus giving primacy to the subjective conditions of possible experience.
Network oscillations modulate interictal epileptiform spike rate during human memory
- Joseph Matsumoto
- Matt Stead
- Michał Tomasz Kucewicz
- Andrew Matsumoto
- Pierce Peters
- Benjamin Brinkmann
- Jane C. Danstrom
- Stephan Goerss
- W. Marsh
- Fred Meyer
- Gregory Worrell
2013 Brain: A Journal of Neurology
Eleven patients being evaluated with intracranial electroencephalography for medically resistant temporal lobe epilepsy participated in a visual recognition memory task. Interictal epileptiform spikes were manually marked and their rate of occurrence compared between baseline and three 2 s periods spanning a 6 s viewing period. During successful, but not unsuccessful, encoding of the images there was a significant reduction in interictal epileptiform spike rate in the amygdala, hippocampus, and temporal cortex. During the earliest encoding period (0-2000 ms after image presentation) in these trials there was a widespread decrease in the power of theta, alpha and beta band local field potential oscillations that coincided with emergent focal gamma frequency activity. Interictal epileptiform spike rate correlated with spectral band power changes and broadband (4-150 Hz) desynchronization, which predicted significant reduction in interictal epileptiform spike rate. Spike-triggered averaging of the field potential power spectrum detected a burst of low frequency synchronization 200 ms before the interictal epileptiform spikes that arose during this period of encoding. We conclude that interictal epileptiform spikes are modulated by the patterns of network oscillatory activity that accompany human memory offering a new mechanistic insight into the interplay of cognitive processing, local field potential dynamics and interictal epileptiform spike generation.
Neural network simulator's application to reference performance determination of turbine blading in the heat-flow diagnostics.
- Anna Butterweck
- Jerzy Głuch
2013
In the paper, the possibility of application of artificial neural networks to perform the fluid flow calculations through both damaged and undamaged turbine blading was investigated. Preliminary results are presented and show the potentiality of further development of the method for the purpose of heat-flow diagnostics.
New Approach to Noncasual Identification of Nonstationary Stochastic FIR Systems Subject to Both Smooth and Abrupt Parameter Changes
- Maciej Niedźwiecki
- Szymon Gackowski
2013 Pełny tekst IEEE TRANSACTIONS ON AUTOMATIC CONTROL
In this technical note, we consider the problem of finite-interval parameter smoothing for a class of nonstationary linear stochastic systems subject to both smooth and abrupt parameter changes. The proposed parallel estimation scheme combines the estimates yielded by several exponentially weighted basis function algorithms. The resulting smoother automatically adjusts its smoothing bandwidth to the type and rate of nonstationarity of the identified system. It also allows one to account for the distribution of the measurement noise.
New approaches to cutting resistance estimation of wood cutting process with circular-saw blades
- Zdenek Kopecky
- Ludka Hlaskova
- Kazimierz Orłowski
- Pavel Kral
2013
Theoretical and experimental determination of values of cutting resistance belongs to the basic and simultaneously the most developed field of mechanics of this process. Energetic effects of wood sawing process are mainly calculated on the basis of the specific cutting resistance which, in wood cutting, is a function on a lot of factors. In this paper new method for calculation of cutting resistance is described. The latter method is based on modern fracture mechanics for determination of sawn material data – such as the specific work of surface formation (toughness) and the shear yield stress. This paper presents a new method which might be applied for estimation of cutting resistance while sawing with circular saw blades.
New Aspects of Virtual Sound Source Localization Research—Impact of Visual Angle and 3-D Video Content on Sound Perception
- Bartosz Kunka
- Bożena Kostek
2013 Pełny tekst JOURNAL OF THE AUDIO ENGINEERING SOCIETY
The influence of image on virtual sound source localization, called the “image proximity effect” or the “ventriloquism effect”, is a well known phenomenon. This paper focuses on other aspects related to this effect, namely the impact of the visual angle of the presented object and 3D video content on sound perception. The research conducted confirmed that the visual angle of the presented object determines the image proximity effect regardless of the screen size. An interesting observation was made when studying the impact of 3D video on virtual sound source localization. When two objects are displayed in a 3D scene, the viewer’s attention is more attracted by the object which is closer to the viewer (negative parallax). Two eye-gaze tracking systems were exploited in the presented experiments to objectivize the obtained results.
New clicked full agonists of the estrogen receptor β
- Sebastian Demkowicz
- Kamila Filipiak
- Maciej Maslyk
- Jakub Ciepielski
- Sonia de Pascual-Teresa
- Sonsoles Martín-Santamaría
- Beatriz De Pascual-Teresa
- Ana Ramos
2013 Pełny tekst RSC Advances
A click chemistry approach was used to synthesize a series of 1,4-diaryl-substituted 1,2,3-triazoles designed to behave as estrogen receptor (ER) ligands. We studied their affinities for both receptors α and β, their agonist activities in a cell-based luciferase reporter assay and their effect on the proliferation of the hormone-dependent MCF-7 cell line. We found two compounds (3a and 3c) that behave as selective full agonists for ERβ at a 20 μM concentration, and one of them (3c) showed no proliferative effect on MCF-7 cells.
New conjugates of tuftsin and muramyl dipeptide as stimulators of human monocytes-derived dendritic cells
- Anna Wardowska
- Krystyna Dzierzbicka
- Agnieszka Menderska
- Piotr Trzonkowski
2013 PROTEIN AND PEPTIDE LETTERS
Muramyl dipeptide (MDP) and tuftsin are known biologically active compound displaying a significant influence on various cell populations of innate immune response. MDP, as a fragment of bacterial cell wall, stimulates not only macrophages and monocytes, but also dendritic cells. In contrast, little is known about tuftsin influence on these cells. Therefore it seemed vital to access whether tuftsin or its derivatives conjugated with MDP could influence the activity of this subpopulation of antigen presenting cells (APC). Immature dendritic cells (iDCs) were derived from human monocytes through eight-day tissue culture supplemented with hrIL-4 and hrGM-CSF. On the day 9 DCs were stimulated with newly synthesized conjugates of tuftsin and muramyl dipeptide. The influence of the examined compounds on the activity and maturity of monocyte-derived DCs was estimated by flow cytometry analysis. The flow cytometry analysis revealed that tuftsin and some of its analogues do stimulate maturation and activity of DCs but to a lesser extend in comparison to MDP. The obtained results suggest further development of the experiments concerning the influence of MDP and tuftsin analogues on the activity of dendritic cells.
New matrix-free reference material for ethene in the form of optical fibres
- Marta Słomińska
- Piotr Konieczka
- Jacek Namieśnik
2013 Pełny tekst ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Reference materials are indispensable in the qualitycontrol and quality assurance of analytical measurements. Onenovel approach to the generation of standard gaseous mixturesof toxic, reactive, volatile, labile, and malodorous substancesinvolves thermal decomposition or rearrangement, under definedtemperature conditions, of compounds immobilized, bychemical bonding, on the surface of an appropriate carrier torelease specific amounts of a volatile compound. In this techniquethe type of support used to immobilize the compound isextremely important, because the amount of analyte releaseddepends directly on the choice of material. In this paper wereport the novel preparation of a matrix-free ethene standard inthe form of glass fibres coated with a thin layer of aluminium,the surface of which is modified by reaction with a specificcompound. As a result of thermal decomposition of this compound,gaseous ethene is formed. In this paper we present theresults obtained from tests of stability and homogeneity, twoproperties of crucial importance in the preparation of referencematerials, by comparison of a series of results obtained forrandomly chosen samples of the reference material. Interlaboratorycomparative studies resulted in determination of a referencevalue for the ethene formed after thermal decompositionof the surface compound ((2.12±0.14) ng per fibre).
New Method for Determination of Adjustment Corrections for Crane Rail Axes
- Waldemar Kamiński
2013 Pełny tekst REPORTS ON GEODESY AND GEOINFORMATICS
Electronic tacheometers are currently a standard instrument used in geodetic work, including also geodetic engineering measurements. One of the many applications of tacheometers in engineering geodesy are 3D control measurements of crane rail axes. This paper proposes a new method of computing adjustment corrections for crane rail axes based on 3D polar measurements performed with an electronic tacheometer. The intermediary method with conditions on parameters was used in the solution of the problem. The theoretical discussion was complemented with an example application on simulated results of observations. The obtained results confirmed the theoretical assumptions and encourage the verification of the presented proposal on practical examples
New PCR test for detection of Candida glabrata based on the molecular target chosen by the RAPD technique
- Anna Olchawa
- Beata Krawczyk
- Anna Brillowska-Dąbrowska
2013 Pełny tekst Polish Journal of Microbiology
Rapid, reliable diagnosis is a necessary condition for the successful treatment of infections. Such diagnostic assays are continually being developed. #e paper presents a method for selecting the molecular target for PCR-based diagnostics based on the comparison of RAPD patterns. A sequence encoding Candida glabrata CBS138 hypothetical protein was selected. The limit of detection for PCR and real-time PCR reactions with DNA extracted from blood samples spiked with Candida glabrata was estimated at 1 CFU/ml. The application of the assays developed in this study would thus seem to be promising as a complementary method in the diagnostics of C. glabrata infections.
New Technologies Adoption and Diffusion Patterns in Developing Countries. An Empirical Study for the Period 2000-2011
- Ewa Lechman
2013 Pełny tekst EQUILIBRIUM Quarterly Journal of Economics and Economic Policy
In recent years, enormous changes are noted worldwide when broad adoption of Information and Communication Technologies (ICT). These unique technologies – often perceived as economic development incentives – have a great ability to spread at high pace and low cost in world countries, bringing to people opportunities to contribute to economic development and growth. New Technologies play a special role in developing countries, where their in-country adoption lies in the centre of development strategies. ICT are treated as tools which bring to people access to information, education and knowledge, offering unlimited possibilities for wealth-creation. The paper, purely empirical in nature, reports on the pace of adoption of new Information and Communication Technologies in developing countries, and – additionally – investigates country-specific ICT diffusion patterns. We expect to uncover the S-shape curve in the diffusion process in most of developing countries, as well as in the whole country sample. For the analysis purposes we apply all counties, which – according to the World Bank nomenclature – are classified as low-income and lower-middle-income economies. Our sample covers 46 countries (upper-middle-income and high-income economies are excluded from the study purposely), which are classified as developing economies. The time framework is set for the period of 2000-2011. All data necessary for the analysis are derived from World Telecommunication/ICT Indicators Database 2012 (16th edition).
Newralgiczne odwołania
- Krzysztof Leja
2013 Pełny tekst Forum Akademickie
W artykule podniesiono problem znaczenia odwołań w parametryzacji jednostek naukowych, sugerując, aby nie traktować go zbyt biurokratycznie
Next Generation Digital
- Bogdan Wiszniewski
2013 Pan European Networks: Science & Technology
The paper outlines the major objectives of the MENAID research project, eimed at novel architectures of digital documents. Such documents will enable reduction of information overflow and strain, a major threat to the growth of a digital society. They will be forward compatible, technology neutral and lightweight, allowing workers of network organizations to use personal devices of any type.
Nie lekceważ barów. Armatura na kanalizacyjnych przewodach ciśnieniowych
- Ziemowit Suligowski
2013 Magazyn Instalatora
Problemy stosowania armatury na sieciach wodociągowych. Nadrzędność elementu wysokości ciśnienia. Jakość armatury. Problemy minimalizacji ceny, kryterium masy. Paradoks niskiej ceny i wysokich kosztów eksploatacji.
Nieautoryzowany dostęp do usługi lokalizacyjnej w fazowym systemie TDOA
- Jarosław Sadowski
2013 Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne
Referat zawiera opis sposobu obliczania pozycji stacji bazowych hiperbolicznego systemu nawigacyjnego na podstawie pomiarów różnicy czasów propagacji sygnałów w kilku znanych punktach pomiarowych. Przedstawiono także sposób usuwania niejednoznaczności wyników w systemie fazolokacyjnym oraz podano przykłady obliczeniowe z obszaru Zatoki Gdańskiej.
Nierównowagowe przemiany fazowe
- Sebastian Kornet
- Janusz Badur
2013 Logistyka
Woda jest substancją, która występuje najczęściej w naturze i może przyjmować różne stany skupienia. Przemiany fazowe zachodzące w wodzie są przedmiotem naszego codziennego doświadczania. Mogą one zachodzić spontanicznie, lub także mogą być one inicjowane przez człowieka w różnego rodzaju maszynach i urządzeniach. Do najbardziej ciekawych przemian, które zachodzą w tym płynie są kondensacja i flashing. Oba te zjawiska mogą być zainicjowane poprzez szybką zmianę ciśnienia, zatem są to przemiany indukowane „naprężeniowo”. Zjawiskiem branym pod uwagę w realizowanych badaniach jest kondensacja pary wodnej. W części NP kondensacyjnej turbiny parowej przedostatni i ostatni stopień pracują w obszarze, w którym zachodzi zjawisko tzw. spontanicznej kondensacji, która jest nierównowagowym przejściem fazowym. W pracy przedstawiono wyniki obliczeń przepływu pary w części NP turbiny parowej mocy 200MW i porównano je z danymi eksperymentalnymi. Obliczenia przeprowadzono z wykorzystaniem różnych sposobów modelowania przepływu pary.