2017 - Repozytorium publikacji - Politechnika Gdańska

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Fuzzy Sets in the GIS Environment in the Location of Objects on the Surface of Water Bodies
- Adam Inglot
- Krzysztof Pyrchla
- Jerzy Pyrchla
2017 Pełny tekst
The issue presented here focuses on concerns about the localization of the object on water surface. The article shows how to facilitate localization process by applying mathematical solutions characterized by simplicity, rapid action and delivering credible results. The paper shows the results of background experiments, which enabled to collect technical parameters needed for conducting simulation testing. The research has been carried by employing network-centric maps of Zatoka Gdańska (Gdansk Bay) prepared in the ArcGIS environment. This allows to place scenarios in a real-life seacoast. Thanks to this solution, the simulation testing has remained very close to a real-life environmental condition. A particular attention has been devoted to the accuracy of observers' localization and its influence on operation effectiveness. Some new tools have been introduced, with an aim to support the usage of fuzzy sets in the GIS environment.
Game about space or game in the space?
- Tomasz Parteka
2017 Pełny tekst BIULETYN KOMITETU PRZESTRZENNEGO ZAGOSPODAROWANIA KRAJU PAN
The article analyzes various aspects of the actions taken by participants involved in the process of a spatial change. Such a process is described as a game about space or a game in the space. Different terminology is presented, in particular the meaning of: spatial order, regional studies, eco-development, sustainable development. Different forms of the game are analyzed: space as a theater, as a casino, as an area of conflict. The paper addresses also the question on the role of the game planner in defining its rules and mechanisms
Game Theory Analysis of Bidding for a Construction Contract
- Beata Grzyl
- Marian Witold Kembłowski
- Agata Siemaszko
2017 Pełny tekst
The authors are concerned with a bidding problem. There are two companies (P1 and P2) bidding for a highway construction project. In order to be more competitive, P1 considers buying a new gravel pit near the construction site. The basic cost of the pit is known to both companies. However, there is also an additional, hidden, cost (C) known only to P1. P2 is uncertain whether the hidden cost is C = 0 or C = x. P1 plans to bid for the job, but has to decide whether to buy the gravel pit. P2, not having a complete knowledge about C, thus not knowing the strategy choice of P1, has to decide if to bid for the job. In effect we have two payoff matrices, one for the additional cost C = 0, and the other one for C = x. If the probability of P2 bidding for the project can be estimated by propagating intelligence information through a Bayesian Belief Network, the best strategy for P1 can be readily determined. Otherwise, the solution calls for changing this game of incomplete information (players may or may not know some information about the other players, e.g., their “type," their strategies, payoffs) into a game of imperfect information (players are simply unaware of the actions chosen by other players). This is achieved by introducing an additional “Nature” node which for this problem determines with some probability “p” the additional cost C= 0 (thus, C = x with probability 1-p). The solution of this game turns out to depend on the probability “p”. For some values of p the game is solved with pure strategies, whereas for other values the game is in equilibrium when the players randomly mix their strategies.
Game with a Purpose for Verification of Mappings Between Wikipedia and WordNet
- Tomasz Maria Boiński
2017
The paper presents a Game with a Purpose for verification of automatically generated mappings focusing on mappings between WordNet synsets and Wikipedia articles. General description of idea standing behind the games with the purpose is given. Description of TGame system, a 2D platform mobile game with verification process included in the game-play, is provided. Additional mechanisms for anti-cheating, increasing player’s motivation and gathering feedback are also presented. The evaluation of proposed solution and future work is also described.
Gdańska Międzynarodowa Szkoła Letnia na WETI
- Marek Kubale
2017 Pismo PG
W dniach 5-12 września 2017 roku Katedra Algorytmów i Modelowania Systemów23, przy wydatnej pomocy,WETI, zorganizowała Międzynarodową Szkołę Letnią poświęconą algorytmom dla problemów optymalizacji dyskretnej.
Gdańsk’s Cultural Heritage. The City Centre District and Municipal Historical Policy
- Łukasz Bugalski
2017 PRZEGLĄD ZACHODNI
The current municipal historical policy of Gdańsk focuses on two major museum projects purported to be a unique embodiment of the city’s cultural heritage. Their underlying narrative, which is told from the European perspective, is based on two great events of the 20th century and seems to disregard the cultural heritage recorded in the urban structure of the city centre. However, it is precisely this urban structure that exerts the strongest influence on the local identity of Gdańsk’s citizens and the quality of their life. So far the discourse on architecture in Gdańsk has been shaped by the dualistic debate between “tradition” and “modernity”, founded on the division into pre-war and post-war developments. This approach does not take full advantage of the possible ways of reading the cultural heritage of Gdańsk, and should be replaced by at least three narratives: those of the historic city, of Prussian Danzig, and of Polish Gdańsk. Only a proper interpretation of the cultural heritage embodied in the urban structure of the city centre can serve as a foundation for a new and more mature municipal and spatial policy in Gdańsk.
Geier R., Angelmaier V., Gaubner C.-A., Kohoutek J.: Integrale Brücken. Entwurf, Berechnung, Ausführung, Monitoring
- Zbigniew Cywiński
2017 Inżynieria i Budownictwo
Geier R., Angelmaier V., Gaubner C.-A., Kohoutek J.: Integrale Brücken. Entwurf, Berechnung, Ausführung, Monitoring. Ernst & Sohn, Berlin 2017.
Gender wage gap convergence and skills heterogeneity in Poland (2005-2014) - quantile regression analysis based on microdata from EUSILC.
- Aleksandra Parteka
- Sabina Szymczak
- Joanna Wolszczak-Derlacz
2017 Pełny tekst Roczniki Kolegium Analiz Ekonomicznych
In this article we quantify the magnitude and evolution of gender wage differentials in Poland over the years 2005 – 2014 using microlevel data from EU-SILC database (Statistics on Income and Living Conditions). In the study gender wage gap is examined through quantile regression analysis. It is shown that the gender wage gap varies along the wage distribution with workers’ skills heterogeneity playing a role. Additionally, the decomposition technique reveals that the unexplained wage gap is highest for the top of the distribution. Finally, the results suggest a slow decrease in discriminatory component of the wage gap –only for the bottom of the wage distribution.
General concept of reduction process for big data obtained by interferometric methods
- Marta Wlodarczyk-Sielicka
- Andrzej Stateczny
2017
Interferometric sonar systems apply the phase content of the sonar signal to measure the angle of a wave front returned from the seafloor or from a target. It collect a big data – datasets that are so large or complex that traditional data processing application software is inadequate to deal with them. The recording a large number of data is associated with the difficulty of their efficient use. So data have to be reduced. The main goal of new reduction method developed by the authors is that, the data after reduction will not be an interpolated value. The proposed method is consists of two main stage: the grouping of data and the generalization of data. The first stage consists of two steps: initial division and clustering. In the first step, the area will be divided into a grid of squares. The maximum level of generalization of the grid will be founded and its size will be defined. In the second step of data grouping, namely clustering artificial neural networks will be used. Artificial neural networks are good alternative to traditional methods of clustering data. The authors decided to use artificial intelligence methods during the processing of data obtained by interferometric methods because it is novel approach to such issues and provides satisfactory results. The author’s goal is to represent each group by a single sample depending on the compilation scale of final product. The article contains a detailed description of the proposed method.
GENERAL DYNAMIC PROJECTING OF MAXWELL EQUATIONS
- Paweł Wojda
- Sergey Leble
2017 Pełny tekst TASK Quarterly
A complete – system of Maxwell equations is splitting into independent subsystems by means of a special dynamic projecting technique. The technique relies upon a direct link between field components that determine correspondent subspaces. The explicit form of links and corresponding subspace evolution equations are obtained in conditions of certain symmetry, it is illustrated by examples of spherical and quasi-one-dimensional waves.
Generating optimal paths in dynamic environments using RiverFormation Dynamics algorithm
- Grzegorz Redlarski
- Mariusz Dąbkowski
- Aleksander Pałkowski
2017 Journal of Computational Science
The paper presents a comparison of four optimisation algorithms implemented for the purpose of finding the shortest path in static and dynamic environments with obstacles. Two classical graph algorithms –the Dijkstra complete algorithm and A* heuristic algorithm – were compared with metaheuristic River Formation Dynamics swarm algorithm and its newly introduced modified version. Moreover, another swarm algorithm has been compared – the Ant Colony Optimization and its modification. Terms and conditions of the simulation are thoroughly explained, paying special attention to the new, modified River Formation Dynamics algorithm. The algorithms were used for the purpose of generating the shortest path in three different types of environments, each served as a static environment and as a dynamic environment with changing goal or changing obstacles. The results show that the proposed modified River Formation Dynamics algorithm is efficient in finding the shortest path, especially when compared to its original version. In cases where the path should be adjusted to changes in the environment, calculations carried out by the proposed algorithm are faster than the A*, Dijkstra, and Ant Colony Optimization algorithms. This advantage is even more evident the more complex and extensive the environment is.
Generic appearance of objective results in quantum measurements
- Jarosław Korbicz
- E.a. Aguilar
- Paweł Horodecki
- P. Ćwikliński
2017 Pełny tekst PHYSICAL REVIEW A
Measurement is of central interest in quantum mechanics as it provides the link between the quantum world and the world of everyday experience. One of the features of everyday experience is its robust, objective character, contrasting the delicate nature of quantum systems. Here we analyze in a completely model-independent way the celebrated von Neumann measurement process, using recent techniques of information flow, studied in open quantum systems. We show the generic appearance of objective results in quantum measurements, provided we macroscopically coarse-grain the measuring apparatus and wait long enough. To study genericity, we employ the widely used Gaussian unitary ensemble of random matrices and the Hoeffding inequality. We derive generic objectivization time scales, given solely by the interaction strength and the systems’ dimensions. Our results are manifestly universal and are a generic property of von Neumann measurements.
Genetic and biochemical characterization of yeasts isolated from Antarctic soil samples
- Aneta Białkowska
- Katarzyna Szulczewska
- Joanna Krysiak
- Tomasz Florczak
- Ewa Gromek
- Hassan Kassassir
- Józef Kur
- Marianna Turkiewicz
2017 Pełny tekst POLAR BIOLOGY
The Polish Arctowski Station is situated in the maritime Antarctic on the western shore ot' Admiralty Bay and encompasses terrestrial habitats which are not perma-nently covered by ice, in contrast to morę than 90% of the island's surface area. Over the past several decades, stud-ies exploring the soils of those habitats have revealed a considerable diversity of bacteria, filamentous fungi, and, to a lesser extent, yeasts; however, characterization of this complex microbiome, especially at the rnolecular level, is still far from satisfactory. The isolates were assigned to their respective genera and species based on genetic analy-sis of the D1/D2 and ITS1-5.8S-ITS2 regions of rDNA. In the studied soil samples, the most abundant microorgan-isms belonged to the genera Cryptococcus, Rhodotorula, and Debaryomyces. Physiological and biochemical analy-sis of Cryptococcus gilvescens (pro tempore Gojfeauzyma gihescens) and Rhodotorula mucilaginosa showed only a limited level of intraspecies diversity. Cellular DNA con-tent and karyotypes were determined using flow cytometry and pulsed-field gel electrophoresis for several selected strains. For the first time, genome size and electrophoretic karyotypes were investigated in C. gihescens (pro tem G. gihescens), Cryptococcus saitoi (pro tem Naganiskia globosa), Cryptococcus gastricus (pro tem Gojfeauzyma gastrica), and Cryptococcus albidus (pro tem Naganishia albida). In addition, plate tests showed Antarctic yeasts to be a potential source of biotechnologically important en/.ymes. This study in biodiversity, presenting physiologi¬cal and rnolecular characterization of psychrotolerant yeast strains isolated from the soils of western Admiralty Bay, contributes to a better understanding of the microbial ecol-ogy of this uniąue ecosystem.
Genome-wide DNA methylation profiling of the regenerative MRL/MpJ mouse and two normal strains
- Bartosz Górnikiewicz
- Anna Ronowicz
- Piotr Madanecki
- Paweł Sachadyn
2017 Pełny tekst EPIGENOMICS-UK
Aims We aimed to identify the pivotal differences in the DNA methylation profiles between the regeneration capable MRL/MpJ mouse and reference mouse strains. Materials and Methods Global DNA methylation profiling was performed in ear pinnae, bone marrow, spleen, liver, heart from uninjured adult females of the MRL/MpJ and C57BL/6J and BALB/c. Results and conclusion A number of differentially methylated regions distinguishing between the MRL/MpJ mouse and both references were identified. In the ear pinnae, the differentially methylated regions were enriched in genes associated with development, inflammation and apoptosis, and in binding sites of transcriptional modulator Smad1. Several differentially methylated regions overlapped previously mapped quantitative trait loci of regenerative capability. The results suggest a potential epigenetic determinants of regenerative phenomenon
Geodezyjne osnowy realizacyjne i pomiary w morskim pasie brzegowym
- Zygmunt Kurałowicz
- Eugeniusz Lepacki
- Krzysztof Jończyk
2017 Pełny tekst Inżynieria Morska i Geotechnika
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Geometry optimization of steroid sulfatase inhibitors - the influence on the free binding energy with STS
- Karolina Jagiełło
- Anita Sosnowska
- Kar Supratik
- Sebastian Demkowicz
- Mateusz Daśko
- Jerzy Leszczyński
- Janusz Rachoń
- Tomasz Puzyn
- Karolina Jagiello
2017 Pełny tekst STRUCTURAL CHEMISTRY
In the paper we review the application of two techniques (molecular mechanics and quantum mechanics) to study the influence of geometry optimization of the steroid sulfatase inhibitors on the values of descriptors coded their chemical structure and their free binding energy with the STS protein. We selected 22 STS-inhibitors and compared their structures optimized with MM+, PM7 and DFT B3LYP/6–31++G* approaches considering separately the bond lengths, angles, dihedral angles and total energies. We proved that different minimum energy conformers could be generated depending on the choice of the optimization method. However, the results indicated that selection of the geometry optimization method did not affect the optimal STS inhibitor coordinates, and hence the values of molecular descriptors which describe the 3D structure of the molecule. To study the interaction pattern of the STS inhibitors (optimized using different methods) with the target receptor we applied two strategies: AutoDock and PathDock. The docking studies point out that selection of software to docking simulation is one of the crucial factors determining the binding mode of STS inhibitors with their molecular target. Other factor is related to the ligand orientation in the binding pocket. Finally, obtained results indicate that MM+ and PM7 methods (faster and less expensive) could be successfully employed to geometry optimization of the STS inhibitors before their docking procedure as well as for molecular descriptors calculations.
GIS three-dimensional Modelling with geo-informatics techniques
- Patryk Ziółkowski
- Paweł Tysiąc
- Jakub Szulwic
- Katarzyna Bobkowska
2017
The integration issue of virtual models and geo-referenced database have a very broad spectrum of potential applications. Before the integration issue was on the cusp, it was quite problematic to combine three-dimensional models with the geo-referenced database. An integrated database contains a variety of data including such as object orientated data model and raster data. Within this paper, authors present an integration process aiming to make real virtual GIS database which includes the creation of structures, such as bridges, buildings, roads and terrain formations. To create a three-dimensional GIS model high-resolution satellite im-ages/point cloud has been used. For 3D modelling and reconstruction purposes, The Blender program has been used since the software provides with quick workflow and user-friendly interface. As a result of this study authors concede that integrated techniques for three-dimensional GIS databases allow conducting easy as well as sophisticated operation in an efficient and non-time consuming way. The subject holds great promise for a future, current challenges focusing on new approaches for conjectures of spatial objects that will be used to boost the capabilities for automatic visualization.
Glaciers as an Important Element of the World Glacier Monitoring Implemented in Svalbard
- Sara Lehmann-Konera
- Marek Ruman
- Krystyna Kozioł
- Grzegorz Gajek
- Żaneta Polkowska
2017 Pełny tekst
Glaciers are not only contributors to the sea level rise but also important players in the circulation of pollutants. Over a billion people apply glacial waters for domestic purposes; hence, both the quality and quantity of this water should be monitored. In this chapter, we concentrate on the archipelago Svalbard in the Arctic, a typical target area for xenobiotics from long range atmospheric transport (LRAT), holding an important share of the Arctic glacial ice cover. Literature review has been conducted over both the cryospheric metrics and the achievements of analytical chemistry in the environmental monitoring. Svalbard is a relatively well-monitored part of the Arctic, with 17 glaciers regularly monitored for mass balance. In the chemical records of glaciers, a variety of substances have been determined, e.g., ions, heavy metals, or persistent organic pollutants (POPs), with the use of precise analytical techniques. However, knowledge gaps persist, preventing a formation of a reliable chemical inventory of Svalbard glaciers. Moreover, detailed studies on the deposition and transport of pollutants, rather than focusing on their presence only, are crucial future research recommendations.
Gold nanoparticles and their coatings, their effect on cells and their interaction with radiation
- Sophie Grellet
- Małgorzata Śmiałek-Telega
- Nigel J. Mason
- Jon Golding
2017 Pełny tekst Journal of Physics : Conference Series
Two nanometre gold nanoparticles (AuNPs), bearing sugar moieties and/or polyethylene glycolamine (PEG-amine), were synthesised and evaluated for their in vitro toxicity and ability to radiosensitise cells with 220 kV and 6 MV X-rays, using four cell lines representing normal and cancerous skin and breast tissues. In addition to the observed intrinsic cancer-selective chemotoxicity, these AuNPs acted as radiosensitisers in combination with 220 kV or 6 MV X-rays. The ability of AuNPs bearing simple ligands to act as cancer-selective chemoradiosensitisers is a novel discovery that holds great promise in developing low-cost cancer nanotherapeutics
Gold nanoparticles evaluation using functional optical coherence tomography
- Marcin Strąkowski
- Maciej Głowacki
- Aleksandra MARIA Kamińska
- Mirosław Sawczak
2017 Pełny tekst
The main object of this research was to assess the ability to characterize the gold nanoparticles using optical modalities like optical coherence tomography. Since the nanoparticles, especially gold one, have been very attractive for medical diagnosis and treatment the amount of research activities have been growing rapidly. The nanoparticles designed for different applications like contrast agents or drugs delivery change the optical features of tissue in different way. Therefore, the expanded analysis of scattering optical signal may lead to obtain much more useful information about the tissues health and the treatment efficiency. The noninvasive measurements of the concentration and distribution of the nanoparticles, as well as their size in the media have been taken under consideration. For this purpose the polarization sensitive optical coherence tomography system with spectroscopic analysis (PS-SOCT) has been designed and used. In this contribution we are going to present the PS-SOCT measurement data obtained for the gold nanoparticles. The measurements have been taken for the liquid (gold nanoparticles in water) samples changing the particles concentrations in time.