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Search results for: RES
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Analysis of a high-quality photonic crystal resonator
PublicationArtykuł przedstawia kompleksową analizę rezonatora 2D o wysokiej dobroci uzyskanego dzięki zastosowaniu fotonicznych kryształów. Struktura rezonatora została zoptymalizowana w celu osiągnięcia maksymalnej dobroci. Analiza została wykonana przy pomocy metody FDTD z zaimplementowanymi makromodelami, a wyniki poddano następnie obróbce cyfrowej w oparciu o technikę GPOF. Taka kombinacja zastosowanych metod okazała się bardzo efektywna...
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Analysis of circular cavity with tunable combline resonator
PublicationArtykuł prezentuje analizę rozpraszania fali elektromagnetycznej na obiekcie cylindrycznym umieszczonym we wnęce rezonansowej. Metodą analizy jest metoda dopasowania rodzajów.
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Microwave Ring Resonator Based Pressure Sensor
PublicationThis paper demonstrates a microwave pressure sensor, which is based on microstrip line-fed ring resonators. The first ring resonator is loaded with the concentric cylindrical shafts, while the same number of the hollow shanks as the shafts are mounted on the second ring resonator. The arrangement of the cylindrical shaft and hollow shank allows for mechanical movement between two substrates while maintaining electrical contact....
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Finite-difference analysis of a loaded hemispherical resonator
PublicationPrzedstawiono analizę osiowo symetrycznej struktury otwartego rezonatora he-misferycznego zawierającego warstwowe ośrodki dielektryczne. W analizie wy-korzystano metodę różnic skończonych w dziedzinie częstotliwości (FDFD). Wcelu osiągnięcia wysokiej dokładności obliczeń zastosowano zaawansowane me-tody modelowania warunków brzegowych i granicznych.
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Cardiovascular and Perceptual Responses to Resistance Training with Practical Blood Flow Restriction Induced by a Non-Elastic Band vs. Pneumatic Cuff: A Crossover Randomized Study
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Algorithms of fast service restoration in survivable multilayer networks
PublicationGłównym celem rozprawy jest zaproponowanie nowych modeli/algorytmów doboru tras zapewniających przeżywalność usług w sieciach IP-MPLS/WDM poprzez zastosowanie wyznaczonych zawczasu ścieżek zabezpieczających. Zakres pracy obejmuje: dokonanie przeglądu mechanizmów transmisji informacji w warstwowych sieciach teleinformatycznych IP-MPLS/WDM; szczegółowy opis sposobów zapewniania przeżywalności usług; zaproponowanie nowych metod doboru...
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Service restoration in survivable networks under malicious attacks
PublicationW artykule przedstawiono porównanie jakości odtwarzania usług w przeżywalnych sieciach optycznych poddanych awariom losowym oraz celowym działaniom niszczącym (atakom). Założenia odnośnie przeżywalności są następujące: ochrona od krańca do krańca, rozłączność węzłowa każdej pary ścieżek: aktywnej i zabezpieczającej.Z powodu NP-zupełności problemu przeżywalnego doboru tras i przydziału długości fali w sieciach optycznych, zaproponowano...
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Online sound restoration system for digital library applications
PublicationAudio signal processing algorithms were introduced to the new online non-commercial service for audio restoration intended to enhance the content of digitized audio repositories. Missing or distorted audio samples are predicted using neural networks and a specific implementation of the Jannsen interpolation method based on the autoregressive model (AR) combined with the iterative restoring of missing signal samples. Since the distortion...
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Online sound restoration system for digital library applications.
PublicationAudio signal processing algorithms were introduced to the new online non-commercial service for audio restoration intended to enhance the content of digitized audio repositories. Missing or distorted audio samples are predicted using neural networks and a specific implementation of the Jannsen interpolation method based on the autoregressive model (AR) combined with the iterative restoring of missing signal samples. Since the distortion...
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Metaheuristic algorithms for optimization of resilient overlay computing systems
PublicationThe idea of distributed computing systems has been gaining much interest in recent years owing to the growing amount of data to be processed for both industrial and academic purposes. However, similar to other systems, also distributed computing systems are vulnerable to failures. Due to strict QoS requirements, survivability guarantees are necessary for provisioning of uninterrupted service. In this article, we focus on reliability...
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Disaster-resilient communication networks: Principles and best practices
PublicationCommunication network failures that are caused by disasters, such as hurricanes, arthquakes and cyber-attacks, can have significant economic and societal impact. To address this problem, the research community has been investigating approaches to network resilience for several years. However, aside from well-established techniques, many of these solutions have not found their way into operational...
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Toward Fast Calculation of Communication Paths for Resilient Routing
PublicationUtilization of alternate communication paths is a common technique to provide protection of transmission against failures of network nodes/links. However, a noticeable delay is encountered when calculating the relevant sets of disjoint paths using the available algorithms (e.g., using Bhandari’s approach). This, in turn, may have a serious impact on the ability of a network to serve dynamic demands...
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Steam turbines governors in power system restoration process
PublicationThe paper discusses problems related to electric power system restoration process. The turbine controller operating mode influence in small subsystem is analyzed. There are considered abilities, advantages and drawbacks of the controller's two operating modes: power control and speed (frequen-cy) control, to rebuild electric power system from a single generating unit to a few parallel running generators.
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Applications of neural networks and perceptual masking to audio restoration
PublicationOmówiono zastosowania algorytmów uczących się w dziedzinie rekonstruowania nagrań fonicznych. Szczególną uwagę zwrócono na zastosowanie sztucznych sieci neuronowych do usuwania zakłócających impulsów. Ponadto opisano zastosowanie inteligentnego algorytmu decyzyjnego do sterowania maskowaniem perceptualnym w celu redukowania szumu.
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Advanced speech archiving and restoration system for aviation applications
PublicationW referacie przedstawiono opracowany System Rejestracji I Rekonstrukcji Mowy dla potrzeb lotnictwa. System ten umożliwia jednoczesny zapis, archiwizację i poprawę zrozumiałości sygnału mowy pochodzącego z wielu różnych kanałów komunikacji radiowej. Głównym celem systemu jest rejestracja i rekonstrukcja komunikatów słownych wymienianych drogą radiową pomiędzy pilotem samolotu a stacją kontroli lotów - jest to niezwykle istotne w...
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Improvement of Performance Level of Steel Moment-Resisting Frames Using Tuned Mass Damper System
PublicationIn this paper, parameters of the tuned mass dampers are optimized to improve the performance level of steel structures during earthquakes. In this regard, a six-story steel frame is modeled using a concentrated plasticity method. Then, the optimum parameters of the Tuned Mass Damper (TMD) are determined by minimizing the maximum drift ratio of the stories. The performance level of the structure is also forced to be located in a...
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Fast RNS combinational multipliers for small moduli
Publicationzaprezentowano nowe struktury mnożników modulo m oraz mnożników modulom przez stałą dla modułów 5-bitowych. w zaproponowanym algorytmie projektowania zastosowano kolejno redukcję modulo m potęg liczby 2, sumowanie binarne otrzymanych reszt, redukcję modulo do zakresu 2m oraz dwuoperandowe dodawanie modulo m. mnożnik resztowy w proponowanej strukturze posiada mniejsze opóźnienie niż inne znane mnożniki modulo i porównywalny iloczyn...
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Metallochromic azocrown ethers incorporating azole residues
PublicationZwiązki o charakterze odczynników metalochromowych są szeroko stosowane w chemii analitycznej. Reagenty te zbudowane są zazwyczaj z grupy fenolowej połączonej z ugrupowaniem azowym. Włączenie takiego podstawnika do związków makrocyklicznych spowodowało utworzenie nowej grupy reagentów o charakterze chromojonoforów. Zsyntezowane zostały nowe makrocykliczne chromojonofory zawierające w makropierścieniu grupę fenolową lub azolową....
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Detection of People Swimming in Water Reservoirs with the Use of Multimodal Imaging and Machine Learning
PublicationEvery year in many countries, there are fatal unintentional drownings in different water reservoirs like swimming pools, lakes, seas, or oceans. The existing threats of this type require creating a method that could automatically supervise such places to increase the safety of bathers. This work aimed to create methods and prototype solutions for detecting people bathing in water reservoirs using a multimodal imaging system and...
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Global variation in anastomosis and end colostomy formation following left‐sided colorectal resection
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Results of experimental research of hydraulic satellite motor
Open Research DataThe study of the flow rate in the motor and the torque on the motor shaft at low constant speed were carried out.The file contains measurement data of the torque on the motor shaft and the flow rate in the motor as a function of the angle of shaft rotation at various constant pressure drops in the motor.
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Morbidity, Mortality and Survival after Stomach Resection with or without Splenectomy – The Single Centre Observations
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Distal pancreatic resection via laparo-endoscopic single site surgery – development of the technique
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Unified and flexible way to the organizations resources
PublicationZaprezentowano porównanie różnych zasobów organizacji. zasoby podzielono na cztery grupy: informacyjne, finansowe, techniczne i ludzkie, dla których przedstawiono cechy wspólne i różnice. na podstawie tego zestawienia zaproponowano taką organizację danych, aby różne zasoby opisać w jednolity sposób. dzieki takiej organizacji danych mozliwe jest stworzenie konfigurowalnych, elastycznych komponentów, które umożliwią obsługę dowolnych...
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Superadditivity of two quantum information resources
PublicationEntanglement is one of the most puzzling features of quantum theory and a principal resource for quantum information processing. It is well known that in classical information theory, the addition of two classical information resources will not lead to any extra advantages. On the contrary, in quantum information, a spectacular phenomenon of the superadditivity of two quantum information resources emerges. It shows that quantum...
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Export diversification and dependence on natural resources
PublicationLow export diversification is a risk-augmenting factor for many countries dependent on natural resources. The literature tends to focus on the growth effects of resource dependence (‘resource curse’ debate) while not much is known on how it affects the variety of non-resource exports. To quantify this effect we decompose the relative Theil index using product-level export data from 160 countries over the time period 1996–2018....
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Intelligent Resources Search in Virtual Libraries.
PublicationZostała zaprezentowana koncepcja bibliotek cyfrowych oraz temat wyszukiwania zasobów. W celu poprawy jakości procesu wyszukiwania, zostało zaproponowane użycie koncepcji sieci semantycznej zamiast klasycznego sposóbu opisu zasobów bibliograficznych. Została opisana prosta ontologia oparta o Dublin Core meta-data. Zostało przedyskutowane zastosowanie algorytmu przetważania połączeń semantycznych w celu szukania. Zastosowany w Wirtualnej...
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Corporate Social Responsibility Culture in the University of Technology – Polish Students Perspective
PublicationPurpose: The view on CSR concept is constantly broadening and still the new perspective is needed. New challenges are imposed by social, environmental and economic changes. A stakeholder approach defining organizations’ responsibility is no more valid. There is a need to redefine CSR concept and its role in sustainable development. Higher education and its role in shaping future attitudes towards corporate social responsibility...
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Corporate Social Responsibility and Corporate Financial Performance: An Empirical Literature Review
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Corporate Social Responsibility and Family Business: Current Debates and Future Prospects
PublicationThis paper aims at examining the main perspectives on corporate social responsibility (CSR) in family firms discussed in international literature. The topic of CSR has grown exponentially in the last two decades in both, business practice and as an area of interest among academics and researchers. Most studies focus on multinational corporations, some on small and medium enterprises (SMEs) and the smallest number on family business...
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Corporate social responsibility and project management: towards a better understanding of their relationship
PublicationThe main purpose of this article is to identify the fields of convergence, if any, between two management concepts and business practices, namely Corporate Social Responsibility (CSR) and Project Management (PM). To achieve the formulated goal, a systematic literature review (SLR), including bibliometric analysis, LOESS regression analysis, and text mining, was performed. This analysis allowed us to distinguish five categories...
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Kerogen to bitumen transformation with respect to host rock environment
PublicationResearch focuses on analyzing the role of rock constituents in kerogen transformation. It includes mineral and organic matter characterization, kerogen and bitumen isolation, quantification, and determination of the critical factors of transformation ratio concerning generating mobile versus less mobile hydrocarbons. The results indicate that the ratio mainly depends on the distribution and type of kerogen in the basin, and secondly...
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Assessing pathways into a low carbon and climate responsible Gdansk
PublicationA basic question today is the sense of the use new ideas in shaping Polish cities- not as technologically advanced as others. The key is to understand good practices in designing and implementing new approaches. The comparative research Glasgow and Gdansk has been undertaken by Gdansk Development Agency in Jan 2014
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CSR in Family Business- Ethnocentric Meaning Socially Responsible?
PublicationThe aim of this paper is to provide framework and key issues relevant for research on social responsibility of family business. From providing two theoretical approaches towards social responsibility such as social capital concept commenting on the familiness as a family firm resource and capability; and the stakeholder theory we move to the state of the art of family business. Then, we discuss heterogeneity among family firms...
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p38 but not p53 is responsible for UVA-induced MCPIP1 expression
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A sense of security and freedom in a residential environment
PublicationThe article is based on the results of a survey carried out among students of architecture faculties in several countries, which examined the students’ knowledge of shaping the housing environment in such a way as to enable them to fulfil two basic and, at the same time, seemingly mutually exclusive psychological needs of a person: a sense of security and a sense of freedom. In examining these issues, particular emphasis was placed...
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PV installations and the safety of residential buildings
PublicationThe dynamic development of the photovoltaic industry entails threats that have a direct impact on the safety of residential buildings. Appropriate design of a PV installation can be a challenge due to the multifaceted nature of this issue. The designer should take into account issues related to the selection of electrical parameters of the installation, adapting lightning and surge protection in accordance...
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Design of residential buildings in architecture education
PublicationThis article is based on an analysis of residential building designs made by students of the Faculty of Architecture at Gdańsk University of Technology (FA-GUT), Poland, and on the results of a survey conducted among these students. The purpose of the survey was to verify the broad, interdisciplinary knowledge of the students required in preparation for taking up design issues, as well as their ability to use this knowledge in...
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Raman spectroscopy analysis of molecular configuration forms of the macular xanthophylls
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Different molecular organization of two carotenoids, lutein and zeaxanthin, in human colon epithelial cells and colon adenocarcinoma cells
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Experimental tuning of AuAg nanoalloy plasmon resonances assisted by machine learning method
PublicationPlasmonic nanostructures based on AuAg nanoalloys were fabricated by thermal annealing of metallic films in an argon atmosphere. The nanoalloys were chosen because they can extend the wavelength range in which plasmon resonance occurs and thus allow the design of plasmonic platforms with the desired parameters. The influence of initial fabrication parameters and experimental conditions on the formation of nanostructures was investigated....
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Respiratory signal of bathing person - preliminary study
PublicationThe scope of this paper is analysis of applicability of modern biomedical acquisition system installed in bathtub towards reception of respiratory signals of bathing person. An analysis of the possibility of such measurement is shown as well as preliminary results.
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Optimal ECG lead for deriving respiratory signal
PublicationEDR is an interesting measuring technique that allows an indirect assessment of respiratory activity. This is an alternative solution to direct methods that are based on the measurement of air flow, which require a specialized sensor or even a system. However, due to inter-personal anatomical differences, the optimal ECG lead (placement of the electrodes) ensuring the best EDR signal quality is not fixed. An influence of ECG lead...
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Basic Test Methods of Respiratory Protective Devices
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Resource Recycling
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RESOURCE GEOLOGY
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EFFICIENCY OF GAS MIXTURES DETECTION BY RESISTIVE GAS SENSORS
PublicationResistive gas sensors are very popular and are commonly used to detect various gases and their mixtures. Their main disadvantage is very limited selectivity. Practical use of gas sensors in environmental applications (e.g., in sewage systems to protect workers, in air conditioning systems to monitor atmosphere quality) requires determination of concentration of a few mixed gases at the same time. We would like to present recent...
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Efficiency of gas mixtures detection by resistive gas sensors
PublicationResistive gas sensors are very popular and are commonly used to detect various gases and their mixtures. Theeir main disadvantage is very limited selectivity. Practical use of gas sensors in environenmental applications requires determination of concentration of a few mixed gases at the same time. We would like to present recent results of gas detection improvement by utilizing a single gas sensor and additional measurements to...
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Analytical fluctuation enhanced sensing by resistive gas sensors
PublicationResistance fluctuations across polarised resistive gas sensors were studied in detail to evaluate sensor working conditions for detecting methane and ammonia at various concentrations. The 1/f noise component typically dominates other noise sources up to a few kHz and can be utilised to improve gas selectivity when compared with measurements of the sensor DC resistance. The Arrhenius plot was created and the activation energy for...
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Resistive gas sensors – Perspectives on selectivity and sensitivity improvement
PublicationResistive gas sensors are very popular and relatively inexpensive; they can operate at elevated or room temperature for years on end. The main disadvantage of resistive gas sensors is their limited selectivity and sensitivity, but various methods have been applied to improve their behavior. The composition of the porous gas sensing layer, or changes in the sensor’s operating temperature, can enhance the gas detection ability. Furthermore, emerging...