2016 - Repozytorium publikacji - Politechnika Gdańska

Pokaż publikacje z roku

Publikacje z roku 2016

Pokaż wszystkie

BUDYNEK JAKO CYFROWA MASZYNA
- Bogusława Konarzewska
- Rafał Janowicz
2016
Zaawansowane rozwiązania z zakresu różnych dziedzin nauki, adaptowane do architektury, zmieniają wizerunek budynku zarówno pod względem wizualnym, jak i funkcjonalnym. Bezsprzecznie bardzo dużą rolę w tym procesie odgrywają zdobycze technologii informatycznych i elektronicznych. Wyposażony w nie budynek staje się rodzajem cyfrowej maszyny zdolnej adaptować się do zmiennych warunków otoczenia dzięki sieciom czujników i odpowiednim systemom sterowania. Nowoczesne technologie oświetleniowe i medialne powodują, że budynek, dzięki fasadowym instalacjom, wtapia się w dynamiczną tkankę miasta, wchodząc z nią w interakcję i komunikując się w różnorodny sposób z jego mieszkańcami. Z kolei systemy sterowania funkcjami budynku, coraz częściej mające cechy sztucznej inteligencji, stwarzają możliwość rozpoznania oczekiwań użytkowników i dostosowania się do ich zmiennych potrzeb. Celem niniejszego rozdziału jest ukazanie, jak wymienione technologie wpływają na zmianę zarówno fizycznej struktury, jak i znaczenia budynku, przypisując mu nowe funkcje i zadania. Autorzy wskazują jednocześnie na rozwój tego procesu w czasie w ścisłym powiązaniu z rozwojem innych dziedzin nauki.
Building culture written into the landscape – how to read spatial tradition
- Justyna Borucka
2016
The article presents a discussion on the experimenting with material leading to practical so-lutions in building structure in the context of the tradition of the place. It sketches out the practical aspects of creation of space while working with different local materials during the intensive workshops within the Structures in Building Culture IP programme. This kind of unique possibility to practice raw materials gives also the opportunity to discover and understand the building heritage and its importance for the identity of the place. The arti-cle is based on examples of projects and experiments done on the building site. It aims to understand how to design in experimental way with consciousness of the local building culture and local materials, strengths the potential of future project and how it plays a cru-cial role in protecting the landscape. Finally it is important to note that building culture is written in to the landscape.
BUILDING INFORMATION MODELING - ANALIZA ZAKRESU I STANU IMPLEMENTACJI W POLSKIEJ BRANŻY BUDOWLANEJ
- Beata Grzyl
- Magdalena Apollo
- Emilia Miszewska
2016 Pełny tekst Autobusy. Technika, Eksploatacja, Systemy Transportowe
Problematyka BIM (Building Information Modeling) jest obecnie tematem wielu publikacji naukowych, ale także przedmiotem działań podejmowanych przez uczestników szeroko pojętego procesu budowlanego. Liczne zalety i szanse płynące ze stosowania technologii BIM w kolejnych etapach cyklu życia obiektu budowlanego, należy rozpatrywać z punktu widzenia inwestora/zamawiającego, architekta, projektanta konstrukcji i instalacji, dewelopera, inżyniera, wykonawcy, kierownika kontraktu i zarządcy obiektu m.in. w aspekcie podejmowania racjonalnych i efektywnych decyzji. Istotnym elementem każdej inwestycji jest właściwe określenie jej kosztu, czasu realizacji i zakresu. W artykule rozpatruje się te zagadnienia w kontekście zastosowania BIM. Celem artykułu jest przedstawienie zakresu i stanu implementacji BIM w firmach budowlanych działających na terenie Polski.
Building Project and Project Team Characteristics For Creating Hybrid Management Processes
- Cezary Orłowski
- Tomasz Deręgowski
- Miłosz Kurzawski
- Artur Ziółkowski
- Bartosz Chrabski
2016
This paper introduces a method of building the characteristic of Software Development Project. Project characteristic is determined on the basis of several factors such as the complexity of Software Development Project and Project Team, results of historical projects and information on processes and methodologies, which are implemented in analyzed organizations. Information on project complexity can be applied to many different fields. One of them is choosing the most adequate Software Development Methodology and Project Management Processes, which are adjusted to the needs and specific of particular project. The use of most suitable processes and methodologies could significantly increases the probability of project success. Described method is an integral part of Model for Designing Hybrid Management Processes (DHMP). At current stage it is based on experts’ knowledge but will be verified in the context of further work.
Cache service for maps presentation in distributed information data exchange system
- Marek Blok
- Sylwester Kaczmarek
- Magdalena Młynarczuk
- Maciej Sac
2016 Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne
The paper presents the proposition of caches implementation for map presentation in distributed information data exchange system. The concept of cache service is described in the context of distributed information data exchange system elements which control and present on maps positions and other identification data of vessels and other suspicious objects on the territorial sea, sea-coast and the internal sea-waters. The proposed cache service is implemented to decrease response time of the MapServer (a part of the system) to console (mobile or stationary) queries for map data. Since cache service limits the number of SQL queries processed by the databases that store data used in the system, the presented solution improves their performance. The paper presents the general architecture of the data exchange system and the cache concept. The cache service implementation is briefly presented on the basis of information flow diagrams in distributed information system architecture. Moreover, results of main functional tests of cache service are described.
Calculation methods of interaction of electromagnetic waves with objects of complex geometries
- Mykola Shopa
2016 Pełny tekst TASK Quarterly
Modeling of the electromagnetic interaction with different homogeneous or inhomo-geneous objects is a fundamental and important problem. It is relatively easy to solve Maxwellequations analytically when the scattering object is spherical or cylindrical, for example. How-ever, when it loses these properties all that is left for us is to useapproximation models, to ac-quire the solution we need. Modeling of complex, non-spherical, asymmetric particles is used tostudy cosmic, cometary dust, aerosols, atmospheric pollution etc. Few analytical, surface-basedand volume-based methods of light scattering modeling, most commonly used by scientists, arereviewed here
Calculations of Short-Circuit Current Flows in Earth Wires of HV Lines
- Jacek Klucznik
- Zbigniew Lubośny
- Krzysztof Dobrzyński
2016 Pełny tekst Acta Energetica
This paper presents a method which enables calculating flows of short-circuit currents in earth wires of high voltage transmission lines, and its implementation in the form of a computer programme. The algorithm enables performing calculations for a double-fed line and starconnected lines (three terminal lines). The developed programme enables verifying dimensioning of earth wires in the context of their short-circuit thermal withstand value.
Calibration of precipitation estimation algorithm with particular emphasis on the Pomeranian region using high performance computing
- Tomasz Bieliński
- Andrzej Chybicki
2016 Pełny tekst HYDROACOUSTICS
Fast and accurate precipitation estimation is an important element of remote atmosphere monitoring, as it allows, for example, to correct short-term weather forecasts and the prediction of several types of meteorological threats. The paper presents methodology for calibrating precipitation estimation algorithm based on MSG SEVIRI sensor data, and Optimal Cloud Analysis product available via EumetCast transmission. Calibration is performed in a predefined coastal zone area, and utilizes the parallelized gradient computing method. In order to perform and validate results of estimation, reference weather radar data was provided by the Meteorology and Hydrology Research Institute (pol. Instytut Meteorologii i Gospodarki Wodnej - IMGW). The research was conducted using the Tryton supercomputer - the high performance computing environment of Gdansk University of Technology.
Can Historic Interiors with Large Cubature be Turned Acoustically Correct?
- Tadeusz Kamisiński
- Andrzej Kulowski
- Roman Kinasz
2016 Pełny tekst Archives of Acoustics
Historic interiors with large cubature, such as reception, theatrical, and concert halls, need to be renovated periodically if they are to be preserved as cultural heritage for future generations. In such cases it is necessary to maintain appropriate balance between requirements imposed by heritage conservation authorities office which are usually being given a higher priority, applicable safety regulations, and the comfort of use, including good acoustics. The paper is a presentation of architectural interference in three historic interiors with large cubature leading to changes in their acoustic qualities. In two cases, the changes were beneficial to the functional qualities of the halls to satisfaction of the investors carrying out the renovation work. In the third instance, the architectural interference aimed at showing off the monumental valor of the interior resulted in significant degradation of its acoustics. To remedy the situation impairing the functional program of the facility, corrective measures are proposed neutral with respect to its historic character.
Cardiovascular data analysis using electronic wearable eyeglasses-preliminary study
- Adam Bujnowski
- Jacek Rumiński
- Mariusz Kaczmarek
- Krzysztof Czuszyński
- Piotr Przystup
2016
he paper presents an alternative approach to the monitoring of the cardiovascular system. The study depicts configurations of the utilized system and preliminary results of electrical and mechanical parameters of the cardiac system which can be measured using a head-worn device.
Car-sharing: The Impact on Metropolitan Spatial Structures
- Piotr Marek Smolnicki
- Jacek Sołtys
2016
Many examples from the past show that new technologies designed to solve particular problems can also create side effects generating new problems. Some unforeseen or unwanted results may influence space use and spatial structures. Car-sharing is an invention to compete with car ownership. It drastically rise efficiency of car use, reducing the number of vehicles per users. Diffusion of car-sharing is going to accelerate in the near future. The spatial consequences of the car-ownership-oriented-century are already known. But things can complicate if everybody could join traffic with shared automobiles. It is therefore appropriate to anticipate potential side effects of this innovation’s diffusion to avoid negative consequences, and if necessary – to prepare to encounter them. This led to undertake research on the relationship between modern mobility innovations and metropolitan spatial structures. The earliest implementations of new transport technologies appear in metropolises which also have the highest level of general mobility. The article presents the assumptions and principles of scenario-based research. The example shows how diffusion of innovation determine possible scenarios of the future impacts of car-sharing on spatial structures.
Case Study of Stray Current Corrosion of Tall Ship Mast
- Wiesław Tarełko
2016
Nowadays, in the present technical civilization there are numerous complex technical systems that may generate various hazards. Large transport units like ships can be considered as the most dangerous systems. Therefore, it is important to eliminate all possible hazards, especially for ship crewmembers. Destruction of ship structural components caused by vast corrosion is one of these hazards. Usually, its activity leads to a decrease of strength of ship structural components. In 2013 the Polish Classification Society carried out the five-year renewed survey of the tall ship POGORIA. During this survey, the PRS inspectors detected a damage in a form of the corrosion conic pinhole with considerable dimension situated within the lower part of the mizzenmast. Preliminary investigations carried out showed that the main reason of this damage was the occurrence of electrolytic corrosion originating from stray currents flowing between both the lower part of the mizzenmast and the cables charging navigational and radio equipment. This paper deals with backgrounds of the detected damage. In particular, the analysis of a damaged site and development of stray current corrosion have been presented.
Cast Iron Staircase in Aleksandrów Kujawski (Poland) - History, Construction, Architectural Form
- Michał Kwasek
- Aleksander Piwek
2016 Pełny tekst Procedia Engineering
The text presents historic cast iron staircase, which is situated inside the railway station building in Aleksandrów Kujawski. Since the moment of creation in the 19th century for a long time that station, located at the border of Prussia and Kingdom of Poland, was an important transit point. Nowadays it is situated in the central of Poland. The staircase was built in 1870’s as a result of an extension of the railway station building which happened because of the planned visit of the tsar of Russia. Due to that reason stairs have extremely prestigious design. It consists of repeatable elements casted in iron. This has provided easy mounting and interesting, rare artistic form. The staircase in Aleksandrów Kujawski was broadly analysed. Modular, openwork, prefabricated structure is presented. Photographs, architectural stocktaking drawings and 3D models reveal that unique object, which combines functionality and high aesthetic qualities. Stratigraphy examination of paint coats shows, that the stairs were renovated many times. Presented remedial actions indicate negative results of incorrect, unthinking approach to monuments. This unique in Poland cast iron staircase is a glaring example of monument, which despite of compelling reasons of creation, remains neglected nowadays. It became an impulse to discussion on the fate of the cultural heritage which is the element of building’s equipment. Often on grounds of service-based nature of it they are not fully appreciated, thus adequately protected.
Category-Based Workload Modeling for Hardware Load Prediction in Heterogeneous IaaS Cloud
- Henryk Krawczyk
- Jerzy Proficz
- Tomasz Ziółkowski
2016 Studia Informatica Pomerania
The paper presents a method of hardware load prediction using workload models based on application categories and high-level characteristics. Application of the method to the problem of optimization of virtual machine scheduling in a heterogeneous Infrastructure as a Service (IaaS) computing cloud is described.
Cavitation Erosion of P110 Steel in Different Drilling Muds
- Mateusz Kmieć
- Bartłomiej Karpiński
- Marek Szkodo
2016 Pełny tekst Advances in Materials Science
The P110 steel specimens were subjected to ultrasonic cavitation erosion in different compositions of drilling muds and surfactant additive. The test procedure was based on ASTM-G-32 standard recommendations. API 5CT-P110 steel is used for pipes in oil and gas industry. The harsh environment and high velocity of flows poses corrosive and erosive threat on materials used there. The composition of drilling fluid influences its rheological properties and thus intensity of cavitation erosion. The erosion curves based on weight loss were measured.
Cel i główne zadania badawcze projektu netBaltic
- Józef Woźniak
- Michał Hoeft
2016 Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne
Celem projektu NetBaltic jest realizacja szerokopasmowej sieci teleinformatycznej na morzu, która umożliwi wdrożenie nowych usług i aplikacji zapewniających w szczególności poprawę bezpieczeństwa nawigacji. Prace w ramach projektu realizują zespoły badawcze z Wydziału ETI Politechniki Gdańskiej, Instytutu Łączności PIB, Instytutu Oceanologii PAN oraz firm DGT LAB S.A. i NavSim Polska sp. z o.o. Wiele propozycji projektu ma charakter nowatorski, włączając w to wykorzystanie systemu AIS, algorytmy samoorganizacji, zapewnianie bezpieczeństwa transferu danych, przekazy typu DTN, zautomatyzowane procedury przełączania między technika mi transmisyjnymi czy dedykowane aplikacje, szczególnie wobec konieczności ich realizacji w obliczu trudnych warunków propagacyjnych oraz zmiennej topologii sieci. W kolejnych artykułach w niniejszym zeszycie PTiWT przedstawiono zarówno realizowane prace jak też wskazano na specyficzne cechy wyposażenia węzłów sieci oraz wykorzystywanych w projekcie rozwiązań protokolarnych.
Central heating temperature control algorithm for systems with condensing boilers
- Piotr Andrzej Kaczmarek
2016
The problem of control of a central heating system in a small residence is considered. It is assumed that the system is based on a condensing boiler. Since the boiler efficiency depends on a returning water temperature, the proposed control goal is to provide proper air temperature in the residence as well as the lowest possible water temperature. The proposed algorithm is applied to two buildings. Both of them have the same heating energy requirements, but the heat capacity of their walls differs. The presented simulation study shows reduction of energy consumption compared to that yielded by the traditional control algorithms.
Central-force decomposition of spline-based modified embedded atom method potential
- Szymon Winczewski
- Jacek Dziedzic
- Jarosław Rybicki
2016 Pełny tekst MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
Central-force decompositions are fundamental to the calculation of stress fields in atomic systems by means of Hardy stress. We derive expressions for a central-force decomposition of the spline-based modified embedded atom method (s-MEAM) potential. The expressions are subsequently simplified to a form that can be readily used in molecular-dynamics simulations, enabling the calculation of the spatial distribution of stress in systems treated with this novel class of empirical potentials. We briefly discuss the properties of the obtained decomposition and highlight further computational techniques that can be expected to benefit from the results of this work. To demonstrate the practicability of the derived expressions, we apply them to calculate stress fields due to an edge dislocation in bcc Mo, comparing their predictions to those of linear elasticity theory.
Centrum Nanotechnologii w Gdańsku
- Antoni Taraszkiewicz
- Karolina Taraszkiewicz
- Agnieszka Malinowska
2016 Architektura-Murator
Publikacja jest prezentacją zrealizowanego budynku Centrum Nanotechnologii "B" Politechniki Gdańskiej. Punktem odniesienia dla autorów projektu był zespół historycznych obiektów kampusu Politechniki Gdańskiej, zrealizowanych w stylu neorenesansu niderlandzkiego. Odniesienia do zabudowy historycznej nie są jednak zapożyczeniami ani bezpośrednimi przeniesieniami. Nowo projektowany budynek jest architekturą na wskroś współczesną, "mówiącą" o czasach, w których powstała.
CGO as a barrier layer between LSCF electrodes and YSZ electrolyte fabricated by spray pyrolysis for solid oxide fuel cells
- Dagmara Grudzień
- Jakub Karczewski
- Aleksander Chrzan
- Piotr Jasiński
2016 SOLID STATE IONICS
Perovskite La0.6Sr0.4Co0.2Fe0.8O3 − δ (LSCF) is often used as a cathode material for solid oxide fuel cells (SOFC) due to high mixed ionic and electronic conductivity and good catalytic activity. Unfortunately, sintering of the LSCF cathode together with the yttria stabilized zirconia (YSZ) electrolyte, leads to formation of the La2Zr2O7 and SrZrO3 phases in the interface. These phases increase the resistance of the cell. To avoid creation of the undesirable phases, diffusion barrier layers are often used. In this work 200 nm thick cerium-gadolinium oxide (CGO) layer deposited by spray pyrolysis is used as a diffusion barrier. The impact of sintering temperature on the effectiveness of diffusion barrier was examined. For optimized sintering temperature of 900 °C, the CGO barrier layer leads to lowering polarization loses of almost two orders of magnitude from 477 mΩ cm2 (when CGO is not used) to 7 mΩ cm2.