displaying 1000 best results Help
Search results for: CITY FRAGMENTATION, LINEAR
-
Buckling and post-buckling behavior of column with central non-linear restraint
PublicationW pracy bada się wyboczenie giętne i zachowanie pokrytyczne ściskanego osiowo pręta z nieliniową sprężystą podporą w środku rozpiętości przęsła. Rozwiązanie problemu wyznaczono za pomocą metody małego parametru. Podano przykład numeryczny wyboczenia i zachowania pokrytycznego swobodnie podpartego pręta z nieliniową sprężytą podporą w środku rozpiętości. Wykazano istotny wpływ nieliniowości podpory na zachowanie pokrytyczne pręta.
-
On well-posedness of the first boundary-value problem within linear isotropic Toupin–Mindlin strain gradient elasticity and constraints for elastic moduli
PublicationWithin the linear Toupin–Mindlin strain gradient elasticity we discuss the well-posedness of the first boundary-value problem, that is, a boundary-value problem with Dirichlet-type boundary conditions on the whole boundary. For an isotropic material we formulate the necessary and sufficient conditions which guarantee existence and uniqueness of a weak solution. These conditions include strong ellipticity written in terms of higher-order...
-
Influencing the city spatial order by balancing the development of a transportation system - the city of Gdansk example. = Kształtowanie ładu przestrzennego miasta poprzez równoważenie rozwoju systemu transportowego na przykładzie Gdańska
Publication -
Electrostatic interactions in finite systems treated with periodic boundary conditions: Application to linear-scaling density functional theory
PublicationWe present a comparison of methods for treating the electrostatic interactions of finite, isolated systems within periodic boundary conditions (PBCs), within density functional theory (DFT), with particular emphasis on linear-scaling (LS) DFT. Often, PBCs are not physically realistic but are an unavoidable consequence of the choice of basis set and the efficacy of using Fourier transforms to compute the Hartree potential. In such...
-
Sustainable Knowledge Base Waterfront Development for Increasing Coastal City Competitiveness - WOTCOM
PublicationW pracy przedstawiono koncepecję zrównoważonego i opartego na wiedzy rozwóju waterfrontów w kierunku zwiększenia konkurencyjności miast morskich - WOTKOM
-
Therapeutic Qualities and Sustainable Approach to Heritage of the City. The Coastal Strip in Gdańsk, Poland
Publication -
“OUT OF PLACE” IN THE CITY: DEVELOPMENT OF SOCIOSPATIAL DISORDER SENSITIVITY SCALE IN URBAN SETTINGS
Publication -
Household standards and socio-economic aspects as a factor determining energy consumption in the city
Publication -
The financial impact of urbanization costs in Poland at municipality level – the case of Wrocław city
Publication -
The new footbridge in city of Cracow dynamic design and final verification in test loading
PublicationArtykuł przedstawia rozwój projektu kładki od formy architektonicznej do ostatecznego kształtu konstrukcji.
-
Contemporary Architectural Design in the Context of Historic Remains: The Case of the Old City of Gdańsk
PublicationThis article presents several examples of modern developments designed to preserve and coexist with fragments of historic brick buildings. These building projects each faced a similar task; to save and display the historical urban fabric, but they differed significantly in how they chose to achieve that goal. Not all of the projects presented in this study meet the requirements of the Venice Charter equally well. In this field,...
-
Interdisciplinarity in Smart Sustainable City education: exploring educational offerings and competencies worldwide
PublicationMore and more higher education institutions are offering specialized study programs for current and future managers of Smart Sustainable Cities (SSCs). In the process, they try to reconcile the interdisciplinary nature of such studies, covering at least the technical and social aspects of SSC management, with their own traditionally discipline-based organization. However, there is little guidance on how such interdisciplinarity...
-
The environmental dimension of city dwellers’ quality of life and the city’s social and spatial variability
PublicationThe purpose of this paper is to attempt an analysis of the environmental dimension of the quality of life using quantitative surveys conducted among residents of Gdańsk. In the paper, we make reference to the theoretical assumptions ensuing from the concept of a comprehensive and integrated approach to the development of the urban environment, whilst noting the profound impact humans bring to their evaluation of the environmental...
-
Rethinking Sustainable Cities at Night: Paradigm Shifts in Urban Design and City Lighting
PublicationSince the establishment of the 17 Sustainable Development Goals (SDGs) by the United Nations General Assembly in 2015, various perspectives on sustainable cities have been developed and adopted in order to achieve a better and more sustainable future. However, background research has revealed that these goals and targets are limited because they do not take into account the growing body of lighting-related research in diverse fields...
-
Linear impedance of V2O5 nanorods obtained at 903K
Open Research DataThe DataSet contains the linear electrical properties of V2O5 nanorods which were measured by the impedance spectroscopy method. V2O5 nanorods were obtained by the sol-gel method. The information about xerogel powder synthesis is described in the Journal of Nanomaterials. The precursor powder was pressed into the disk-shaped pellets (12mm in diameter...
-
Linear impedance of V2O5 nanorods obtained at 913K
Open Research DataThe DataSet contains the linear electrical properties of V2O5 nanorods which were measured by the impedance spectroscopy method. V2O5 nanorods were obtained by the sol-gel method. The information about xerogel powder synthesis is described in the Journal of Nanomaterials. The precursor powder was pressed into the disk-shaped pellets (12mm in diameter...
-
Linear impedance of V2O5 nanorods obtained at 893K
Open Research DataThe DataSet contains the linear electrical properties of V2O5 nanorods which were measured by the impedance spectroscopy method. V2O5 nanorods were obtained by the sol-gel method. The information about xerogel powder synthesis is described in the Journal of Nanomaterials. The precursor powder was pressed into the disk-shaped pellets (12mm in diameter...
-
Monitoring Steel Bolted Joints during a Monotonic Tensile Test Using Linear and Nonlinear Lamb Wave Methods: A Feasibility Study
PublicationThe structural integrity of steel bolted joints may be compromised due to excessive loading. Therefore, condition assessment and the detection of potential defects before they cause a failure have become a major issue. The paper is focused on the condition monitoring of a bolted lap joint subjected to progressive degradation in a tensile test. The inspection used Lamb waves propagated through the overlap area. Wave propagation...
-
Linear impedance of vanadate glasses containing BaTiO3
Open Research DataThe linear impedance of vanadate glasses doped with BaTiO3 was measured. Samples of the composition of x[BaO,TiO2]–(80 − x)V2O5–20Bi2O3 where x = 5, 10 and 15 in mol% were prepared by a conventional melt quenching technique. The melting was performed in alumina crucibles at the temperature of 1273 K–1373 K. The melts were poured on a preheated (573...
-
Linear impedance of V2O5 nanorods obtained at 923K
Open Research DataThe DataSet contains the linear electrical properties of V2O5 nanorods which were measured by the impedance spectroscopy method. V2O5 nanorods were obtained by the sol-gel method. The information about xerogel powder synthesis is described in the Journal of Nanomaterials. The precursor powder was pressed into the disk-shaped pellets (12mm in diameter...
-
Potencjał strategii slow city dla rozwoju miast kształtujących się metropolii polskich. Na przykładzie Pucka i Kartuz miast Obszaru Metropolitalnego Gdańsk-Sopot-Gdynia
PublicationW artykule wskazano możliwości wykorzystania filozofii ruchu Slow, do wykształcenia nowego modelu Metropolitalnych Slow City (MSC). Odniesiono się do założeń ruchu Cittaslow, pokazując potencjały dla alternatywnego kierunku strategii rozwojowej w duchu „miast dobrego życia” dla ośrodków w granicach obszarów metropolitalnych. W podsumowaniu założenia teoretyczne zilustrowano przykładem innowacyjnego modelu projektu rewitalizacji...
-
<title>Cavity control system model simulations for the TESLA linear accelerator</title>
Publication -
<title>Cavity control system essential modeling for the TESLA linear accelerator</title>
Publication -
Linear and branched polyester resins based on dimethyl-2,5-furandicarboxylate for coating applications
PublicationIn this study, novel bio-based hydroxyl-functional (co)polyesters from dimethyl-2, 5-furandicarboxylate (DMF), 2,3-butanediol, and a variety of comonomers viz. glycerol, pentaerythritol or trimethylolpropane are prepared using a solvent-free, bulk polycondensation technique. Extensive molecular and thermal characterization was performed to elucidate the properties of these materials. The materials showed suitable properties for solvent-borne...
-
Non-classical operational calculus applied to certain linear discrete time-system
PublicationW pracy zastosowano nieklasyczny rachunek operatorów do wyznaczania odpowiedzi pewnego dyskretnego układu dynamicznego. Pokazano metodę szczególnie przydatną do wyznaczania odpowiedzi pewnych dyskretnych niestacjonarnych układów dynamicznych, przy których zastosowanie przekształcenia Z sprawia duże trudności.
-
Construction of a picewise-linear classifier by applaing discriminant analysis to decision tree induction
PublicationArtykuł prezentuje metodę konstrukcji drzew decyzyjnych. W odróżnieniu od większości popularnych algorytmów, które wybierają pojedyncze cechy do budowy reguł decyzyjnych w węzłach drzewa, ta metoda łączy wszystkie cechy. Używa ona wieloklasowego kryterium Fishera do wydzielenia nowych cech, które są liniowa kombinacją cech pierwotnych. Takie drzewa mogą aproksymować złożone regiony decyzyjne używając mniejszej liczby węzłów w porównaniu...
-
application of linear quadratic regulator (lqr) for nonlinear systems based on the parameter sensitivity
PublicationMetoda LQR jest znaną metodą optymalizacyjną dla liniowych układów sterowania. W referacie przedstawiono oryginalny algorytm dotyczący zastosowania tej metody dla nieliniowych układów sterowania przy wykorzystaniu analizy wrażliwości układu. Algorytm ten poddany jest weryfikacji na przykładzie układu sterowania napędu statku.
-
Theoretical and experimental assessment of parameters for the non-linear viscoelastic model of structural pounding
PublicationZjawisko zderzeń pomiędzy sąsiednimi konstrukcjami budowlanymi podczas trzęsień ziemi jest w ostatnim czasie intensywnie badane z wykorzystaniem różnych modeli numerycznych siły zderzenia w czasie kontaktu. Wyniki badań eksperymentalnych pokazują, iż nieliniowy model lepko-sprężysty jest najdokładniejszy wśród modeli stosowanych do analizy. Model ten zdefiniowany jest poprzez dwa parametry: liczbę tłumienia zderzenia oraz parametr...
-
Simulation Method for Scheduling Linear Construction Projects Using the Learning– Forgetting Effect
Publication -
Solid phase synthesis and biological activity of linear tuftsin and retro-tuftsin derivatives
PublicationPrzedstawiono syntezę na fazie stałej nowych pochodnych tuftsyny i retro-tuftsyny i ich mikrobiologiczne właściwości. Otrzymane pochodne zawierały wiązanie izopeptydowe między epsilon-aminową grupą lizyny a takimi aminokwasami jak: Ala, beta-Ala, Val, Ile, Gly.
-
Decisional DNA with embedded Relief-F linear regression for knowledge and experience management
PublicationOmowiono zastowania Decyzyjnego DNA, regresji liniowej oraz funkcji RELIEF-F w procesach formalnego modelowania i wspomagania zarzadzania wiedza oraz zarzadzania doswiadczeniem.
-
Analysis of non-linear elastic material properties of PVC-coated Panama fabric.
PublicationW pracy omówiono proces identyfikacji parametrów materiałowych dla wybranej tkaniny technicznej typu Panama. Zaproponowano metodę identyfikacji nieliniowo sprężystych właściwości tkaniny Panama. Określono zakres stosowalności nieliniowo sprężystych parametrów, w oparciu o doraźną wytrzymałości tkaniny na rozciąganie (UTS), która poddana redukcji określa tzw. wytrzymałość długoterminową (LTS). Opisano doświadczenia niezbędne do...
-
Non-Linear Interaction of Harmonic Waves in a Quasi-Isentropic Flow of Magnetic Gas
PublicationThe diversity of wave modes in the magnetic gas gives rise to a wide variety of nonlinear phenomenaassociated with these modes. We focus on the planar fast and slow magnetosound waves in the geometryof a flow where the wave vector forms an arbitrary angleθwith the equilibrium straight magnetic field.Nonlinear distortions of a modulated signal in the magnetic gas are considered and compared to thatin unmagnetised gas. The case of...
-
A 1-nS 1-V Sub-1-µW Linear CMOS OTA with Rail-to-Rail Input for Hz-Band Sensory Interfaces
PublicationThe paper presents an operational transconductance amplifier (OTA) with low transconductance (0.62–6.28 nS) and low power consumption (28–270 nW) for the low-frequency analog front-ends in biomedical sensor interfaces. The proposed OTA implements an innovative, highly linear voltage-to-current converter based on the channel-length-modulation effect, which can be rail-to-rail driven. At 1-V supply and 1-Vpp asymmetrical input driving,...
-
Urban flash flood hazard identification and assessment applying geospatial techniques and hydrodynamic modeling; Erbil city case study, Kurdistan Region of Iraq
PublicationThis dissertation aims to investigate the factors behind flash flooding in Erbil's central district, located in the Kurdistan Region of Iraq, and develop a methodology for assessing flood hazards in the city, despite limited data accessibility. In this thesis, each factor was investigated, including analyzing extreme precipitation events in the last two decades, including their spatial and temporal distribution of rainfall, intensity,...
-
Linear and nonlinear impedance of alkali and iron doped silicate-lead glasses
Open Research DataLinear and nonlinear impedance was studied for lead-silicate glass samples doped with iron ions and alkaline oxides. The compositions of glasses were as follows: (in %mol) 50% SiO2, 25% PbO, 15% Fe2O3 and 15% one of alkaline oxides: Na2O, K2O, Li2O. All samples were prepared by the conventional melt quenching technique. The substrates were powdered...
-
Aleksander Orłowski dr hab. inż.
PeopleDr hab. inż. Aleksander Orłowski, profesor PG w Katedrze Zarządzania Wydziału Zarządzania i Ekonomii Politechniki Gdańskiej, v-ce prezes Forum Rozwoju Aglomeracji Gdańskiej. Zawodowo zajmuje się badaniem i rozwojem koncepcji Smart Cities, współautor (2016-2017) badań gotowości do Smart City dziesięciu czołowych polskich urzędów miejskich, autor książki: Model gotowości procesowej urzędu miejskiego dojścia do Smart City (2019)....
-
The use of a simulation model to analyze the impact of heavy transport generated by the port to the city traffic.
Publication -
Changes in Land Plot Morphology Resulting from the Construction of a Bypass: The Example of a Polish City
Publication -
BelBuk System—Smart Logistics for Sustainable City Development in Terms of the Deficit of a Chemical Fertilizers
Publication -
How can HSR promote inter-city collaborative innovation across regional borders?
PublicationMany studies have shown that high-speed rail (HSR) can reshape the spatial pattern of economic geography. However, there needs to be more logical argumentation and rigorous empirical design on the paths and mechanisms involved. This paper considers the impact of the border effect on HSR links and innovation clusters from the perspective of inter-regional collaborative innovation. It provides a logical and compact theoretical...
-
“Space & Satellite Technologies" intercollegiate master-degree courses of study in Tri-City (Poland)
PublicationSince 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 -...
-
MATHEMATICAL MODELING OF FLOOD MANAGEMENT SYSTEM IN THE CITY OF GDAŃSK, ORUŃSKI STREAM CASE STUDY
PublicationAim of the study This study analyses the efficiency of flood protection in a small urban catchment, based on a system of small reservoirs. Material and methods To assess the flood routing and surge reduction, a mathematical model of the river catchment was implemented. This was a lumped hydrological model, based on the SCS-CN method. Channel routing was performed, using kinematic wave equation. The sub-catchments have been determined...
-
Selected manufacturing difficulties encountered during setup of machining on cnc multi-axis linear automatic lathe and on cnc multi-spindle turning centers
PublicationThe article presents the observed manufacturing technology implementation difficulties in workshop practice, resulting from the construction and principles of operation on the DMG’s SPRINT 32/5 CNC linear automatic lathe and on the Mazak’s HQR 150 MSY and QTN 200 MS CNC turn - mill centers, and discusses possible rules for solving the production problems encountered. The article also discusses the principles of dividing the machining...
-
Decomposition of duet instrument sounds. W: [CD-ROM] International Sympo-sium of Musical Acoustics. ISMA MEXICO CITY. Mexico City, 9-13 December 2002. Mexico City: Escuela Nacional de Musica UNAM**2002, 10 s. 4 rys. 2 tab. bibliogr. 15 poz. Dekompozycja duetów muzycznych.
PublicationW referacie zaprezentowany został algorytm separacji nagrań duetów muzycz-nych. Metoda separacji oparta została na algorytmie FED, przy pomocy któregomożliwa jest ekstrakcja części harmonicznych sygnałów. Ponadto wykorzystanyzostał algorytm estymacji częstotliwości podstawowej oparty na korelacjiskrośnej, w celu estymacji częstotliwości dekomponowanych harmonicznych.
-
Urban city lights. Light pollution as one of the effects of incorrectly designed external illumination. How can a successful lighting masterplan diminish its impact?
PublicationIn the modern world, artificial lighting brings many tangible benefits such as the ability to extend working hours and so increase production, recreational use of the city after dark, or the possibility to travel regardless of the time of day. However, this flexibility comes at a price and negatively impacts on the environment. One such negative phenomenon is Light Pollution ‐ a term used to describe excessive nighttime artificial...
-
Linear impedance of vanadate glass-ceramics containing BaTiO3
Open Research DataThe linear impedance of vanadate glass-ceramics containing BaTiO3 was measured. Samples of the composition of x[BaO,TiO2]–(80 − x)V2O5–20Bi2O3 where x = 5, 10 and 15 in mol% were prepared by a conventional melt quenching technique. The melting was performed in alumina crucibles at the temperature of 1273 K–1373 K. The melts were poured on a preheated...
-
Non-linear strain rate analysis of earthquake-induced pounding between steel buildings
PublicationPast and recent earthquakes have shown that ground motions may cause severe structural damage to civil engineering structures. Earthquake-induced pounding between adjacent buildings has been identified as one of the reasons which intensifies damages. The aim of this paper is to show the results of the detailed nonlinear FEM analysis of earthquake-induced pounding between two steel buildings. The elastic – perfectly plastic material...
-
The Material Anisotropy Influence on Modelling of Rutting Test with Application of Linear Viscoelasticity Constitutive Equations
Publication -
Prediction of Peptide Retention at Different HPLC Conditions from Multiple Linear Regression Models
Publication