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Geomatics and Environmental Engineering
No full textThe climatic emergency that involves the globe has led targets of greenhouse gas reduction in the EU and all over the world. In this scenario, recent advances in renewable renewable energy sources (RESs) have focused interest on the diffusion of power supplies that are produced by photovoltaic and wind plants. The non-programmable nature of these energy sources has led recent studies to consider the power-to-gas (P2G) solution as an opportunity for employing the curtailed electric energy by converting it into hydrogen. The localizations of P2G plants depend on several factors regarding power production, distances, and population distributions. The necessity of integrating these factors led this work to study the development of a cost function that is hosted by a web-based GIS (geographic information system) platform, thus allowing for the storage, elaboration, and web fruition of an entire data set that is related to the possible new localizations of P2G plants. The structure is based on open-source technology and creates a solution that is easily employable by specialists. The developed platform is composed of different remotely connected blocks that are solely based on open-source technology and is focused the interest on the territory of Sicily (Italy). GIS software, a RDBMS database, a geospatial server (Geoserver), a Python optimization module, and a WebGIS visualizer are integrated. This work represents a scientific contribution to the management of energy sources, with a particular focus on policies that are based on hydrogen technology. In fact, different data sets that contain several levels of information that are related to the management and the localization of P2G plants will be even further employed in the future.Krakówwersja wydawnicz
Managerial Economics
No full textOver the years, the study of the interdisciplinarity of publications has taken various forms, from its identification based on the disciplines represented by the authors, through the examination of citations used when writing the article, to the analysis of the publication text itself. The last of these approaches seems to be the most reliable in the context of verifying the real integration between disciplines in a specific text. The approach utilized in the conducted research facilitates a deeper analysis of integration not only between disciplines in general but also between specific issues within their domains, aiding the examination of the intensity of such connections. The research was aimed at analyzing publications affiliated with the Medical University of Silesia in Katowice in terms of their connection with issues included in the area of Computer Science. OpenAlex, a bibliographic database supported by data mainly from Scopus, WoS and Google Scholar, which uses concepts that make up the Wikidata knowledge base to describe the content of publications was used. A list of 14,136 publications from the Medical University of Silesia in Katowice was downloaded from the OpenAlex bibliographic database including such data as: publication id, title, author, abstract, journal, date of publication, ISSN number or concepts. Overall, the most prevalent concepts in the publications were concepts regarding the field of the medicine (medicine, internal medicine, cardiology). The most prevalent concepts concerning computer science in the publications were: computer science, logistic regression and artificial intelligence. The strenght of the connections between concepts regarding medicine and computer science was calculated by calculating the arithmetic mean of the score value for each pair of IT and medical concepts contained in a single publication. The study showed the importance of computer Science issues in the medical publications and highligted the growing importance of AI in the field of medicine.Krakówwersja wydawnicz
Opuscula Mathematica
No full textFor a positive integer and a finite non-negative Borel measure on the unit circle, we study the Hadamard multipliers of higher order weighted Dirichlet-type spaces . We show that if , then for any in the sequence of generalized Ces?ro sums converges to . We further show that if then for the Dirac delta measure supported at any point on the unit circle, the previous statement breaks down for every positive integer .Krakówwersja wydawnicz
Journal of Casting & Materials Engineering
No full textThe equiaxed investment casting process is a multi-physics problem which requires knowledge from engineers who have expertise in materials, metallurgy, fluid dynamics, thermodynamics, and heat transfer. Process modeling is a tool used by foundries to help predict casting defects such as shrinkage porosity, hot tears, and poor grain structure. The reliability of these predictions is strongly dependent on the accuracy of the thermal boundary conditions set in the model. In this work, a SGT5-2000E Vane 4 cast in Rene 80 nickel-based superalloy was modeled, using the FEA simulation package ProCAST, with two different methodologies. One methodology had very little effort invested into defining the thermal domain. The other methodology involved a thorough consideration of all heat transfer mechanisms acting on the mold. An extensive literature search was performed to define a unique natural convection heat transfer coefficient for each set of surfaces on the mold. The transient boundary layer development was also captured in the definition of the heat conditions. The shrinkage porosity predictions of the models were compared to realworld x-ray data and the transient nonuniform methodology predictions were much more representative than the low fidelity heat transfer methodology predictions. The low fidelity heat transfer model did predict some shrinkage, but not where it appeared in reality. The process modeler will be misdirected by the model results when deriving a solution to the casting process if the realworld physics are not appropriately accounted for in the model. This will be very counterproductive when the foundry is using the model to reduce developmental trials by running trials in model space. References and derived parameters are provided for material properties, emissivity of shell and insulation wraps, and external mold spatially varying heat transfer coefficients.Krakówwersja wydawnicz
Geomatics and Environmental Engineering
No full textHydrogeological risks that are associated with rivers have emerged as a significant concern worldwide, impacting both natural ecosystems and human settlements. This contribution presents an interdisciplinary project that leverages many technologies for data-acquisition and modeling to comprehensively analyze and manage risks in riverine environments. The project integrates geomatics, geological, and hydrological techniques to provide a holistic understanding of river dynamics and their associated hazards. As a central component of this project, geomatics plays a pivotal role in instrumental field surveying through the deployment of photogrammetry and LiDAR instruments. Remote-sensing data from satellite imagery further enriches the project’s temporal analysis capabilities. By analyzing this data over time, researchers can monitor changes in river patterns, land use, and climate-related variables, this helps identify trends and potential triggers for hydrological events. To manage and integrate the vast amount of geospatial information that is generated, a geodatabase within a geographic information system (GIS) has been established. It enables efficient data storage, retrieval, and analysis, fostering collaboration among multidisciplinary researcher teams. This system offers tools for risk-assessment, modeling, and scenario planning, these allow for proactive measures for mitigating hydrological risks.Krakówwersja wydawnicz
Mining - Informatics, Automation and Electrical Engineering
No full textStosowanie innowacyjnych technologii w procesie produkcji węgla kamiennego jest nieodzownym elementem budowania przedsiębiorstwa na miarę współczesnych czasów. Tempo zachodzących zmian środowiskowych i społecznych powoduje potrzebę ciągłego doskonalenia procesu produkcyjnego, którego najważniejszym elementem są maszyny i urządzenia. Wymagają one stałego monitorowania ich parametrów pracy w celu zapewnienia ciągłości produkcyjnej oraz bezpieczeństwa. Propozycją rozwiązania tego problemu jest układ pomiarowy rejestrujący parametry pracy obudowy zmechanizowanej, wykorzystujący technologię MEMS do pomiaru zmian nachylenia poprzecznego i podłużnego elementów oraz wysokości obudowy. Praca układu pozwala określić parametry pracy zmechanizowanej obudowy w ścianie wydobywczej. W artykule przedstawiono przykład wykorzystania technologii MEMS w czujnikach układu pomiarowego oraz etapy badań zrealizowanych w celu przystosowania obudowy zmechanizowanej do wdrożenia przedstawionego rozwiązania w warunkach rzeczywistych.Krakówwersja wydawnicz
Energetyka Rozproszona
No full textThe aim of the NEEST project is to support Polish cities in their transformation towards net-zero emissions by developing model solutions. As part of the project, selected urban quarters were subject to a detailed 3D scan, and digital models of buildings and their surroundings were created. The development of so-called “technology baskets,” which are sets of renewable energy technologies that provide: heating, cooling, and electricity for different types of buildings, also played a key role. The article describes the methods used to select urban areas, the subsequent stages of the project, and the City Energy System Simulator (SSEM) tool, which could be used as an aid in designing a energy transformation for other cities in Poland.Celem projektu NEEST jest wspieranie polskich miast w procesie ich transformacji w kierunku zeroemisyjności poprzez opracowanie modelowych rozwiązań transformacji energetycznej (TE) kwartałów zabudowy zlokalizowanych w pięciu ośrodkach. W ramach projektu wybrano kwartały miejskie, w których przeprowadzono szczegółowe skanowanie 3D oraz stworzono cyfrowe modele budynków i otoczenia. Kluczową rolę w przygotowywaniu koncepcji TE odegrało również opracowanie tzw. koszyków technologicznych, czyli zestawów możliwych do użycia technologii OZE zapewniających ciepło, chłód oraz energię elektryczną dla różnych typów budynków. W artykule opisano zastosowane metody selekcji obszarów miejskich, kolejne etapy prac projektowych oraz narzędzie Symulator Systemu Energetycznego Miasta (SSEM), które będzie mogło służyć jako pomoc przy projektowaniu transformacji innych miast w Polsce.Krakówwersja wydawnicz
Geology, Geophysics & Environment
No full textThe evolution of the Earth’s surface is driven by external and internal forces, the latter of which can only be studied indirectly. Knowledge about the structure of the Earth’s interior is very important for modeling and predicting the processes occurring at the surface. This study presents a new concept of joint analysis of the gravimetric and seismometric recordings of earthquakes for determining the seismic structure of the Earth down to the depth of 1250 km. The proposed method allows the use of gravimetric data without the known full transfer function of the instrument. Group velocity dispersion curves of the fundamental mode of Rayleigh waves up to the period of 550 s are measured based on the joint analysis of the recordings of superconducting gravimeter and broadband seismometers operating at the same location in five testing sites in Europe, allowing for the exploration of a broader response for incoming seismic waves. Averaged dispersion curves for earthquakes around the world for each site are inverted by the weighted linear inversion and Monte Carlo methods to estimate the distribution of shear-wave seismic velocity in the Earth’s mantle. A comparison of the deterministic and probabilistic inversion methods can excellently demonstrate surface waves’ ability to determine the Earth’s mantle structure. The inversion results are compared with the global ak135 seismic model (Kennett et al. 1995) to verify the proposed method.Krakówwersja wydawnicz
Energetyka Rozproszona
No full textThe paper presents the RESHeat system, which combines renewable energy sources (RES) for the production of electricity, heat, and cooling for multifamily buildings, with a focus on sustainable energy solutions. The system, developed under the Horizon 2020 program, integrates technologies such as photovoltaic (PV) panels, photovoltaic-thermal (PV-T) modules, heat pumps, and seasonal thermal energy storage (STES). Its main goal is to reduce greenhouse gas emissions and ensure energy efficiency in buildings. The article discusses details of a demonstration installation in Kraków, where the system achieved high efficiency, providing up to 70% of the energy required for heating and cooling the building. The RESHeat system has significant potential for commercialization and scaling, making it a promising solution for heating and electricity production in multifamily buildings.Artykuł przedstawia system RESHeat, który łączy odnawialne źródła energii (OZE) służące do produkcji energii elektrycznej, ciepła i chłodu dla budynków wielorodzinnych, z naciskiem na zrównoważone rozwiązania energetyczne. System, opracowany w ramach programu Horyzont 2020, integruje technologie takie jak panele fotowoltaiczne (PV), moduły fotowoltaiczno-termiczne (PV-T), pompy ciepła oraz sezonowe magazynowanie energii cieplnej (STES). Jego głównym zadaniem jest zmniejszenie emisji gazów cieplarnianych oraz zapewnienie efektywności energetycznej budynków. W artykule omówiono szczegóły instalacji demonstracyjnej w Krakowie, gdzie system osiągnął wysoką wydajność, dostarczając do 70% energii potrzebnej do ogrzewania i chłodzenia budynku. System RESHeat ma duży potencjał komercjalizacji i skalowania, a także jest obiecującym rozwiązaniem dla ogrzewania i produkcji energii elektrycznej w budynkach wielorodzinnych.Krakówwersja wydawnicz
Computer Science
No full textThere is a widespread belief that VR technologies can provide controlled, multisensory, interactive 3D stimulus environments that engage patients in interventions and measure, record and motivate required human performance. In order to investigate state-of-the-art and associated occupations we provided a careful review of 6 leading medical and technical bibliometric databases. Despite the apparent popularity of the topic of VR use in cardiac surgery, only 47 articles published between 2002 and 2022 met the inclusion criteria. Based on them, VR-based solutions in cardiac surgery are useful both, for medical specialists and for the patients themselves. The new lifestyle required from cardiac surgery patients is easier to implement thanks to VR-based educational and motivational tools. However, it is necessary to develop the above-mentioned tools and compare their effectiveness with Augmented Reality (AR). For the aforementioned reasons, interdisciplinary collaboration between scientists, clinicians and engineers is necessary.Krakówwersja wydawnicz