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Search results for: CRYO-EM
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High-Efficacy Global Optimization of Antenna Structures by Means of Simplex-Based Predictors
PublicationDesign of modern antenna systems has become highly dependent on computational tools, especially full-wave electromagnetic (EM) simulation models. EM analysis is capable of yielding accurate representation of antenna characteristics at the expense of considerable evaluation time. Consequently, execution of simulation-driven design procedures (optimization, statistical analysis, multi-criterial design) is severely hindered by the...
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Isolation and restoration policies against power collapse.
PublicationPrzedstawiono zasady obrony systemów elektroenergetycznych przed tzw. blackout´em. Omówiono wielkości kryterialnych tych systemów, możliwości predykcji stanów zagrożeniowych oraz automatyki działające on line w celu zapobieżenia rozprzestrzeniania się zakłóceń i awarii w systemach elektroenergetycznych.
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Rapid antenna design optimization using shape-preserving response prediction
PublicationAn approach to rapid optimization of antennas using the shape-preserving response-prediction (SPRP) technique and coarsediscretization electromagnetic (EM) simulations (as a low-fidelity model) is presented. SPRP allows us to estimate the response of the high-fidelity EM antenna model, e.g., its reflection coefficient versus frequency, using the properly selected set of so-called characteristic points of the low-fidelity model...
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A compact microstrip rat-race coupler constituted by nonuniform transmission lines
PublicationIn this work, a step-by-step development of a compact microstrip rat-race coupler (RRC) has been presented and discussed. A high degree of miniaturization has been obtained by substituting six quarter-wavelength uniform atomic building blocks of a RRC by their nonuniform counterparts. The miniaturization procedure has been realized in three progressive steps: (i) the first layout solution of a miniaturized RRC has been acquired...
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Religijność Czesława Miłosza (książka)
PublicationMówić o twórczości Czesława Miłosza bez uwzględnienia obecnych w niej idei i wierzeń religijnych jest jak oglądać czubek góry lodowej. Może piękny, lecz nie dający pojęcia o napieraniu głębi. Próbą ogarnięcia teologicznego wymiaru dzieła noblisty jest książka Religijność Czesława Miłosza. Na jej stronach twórczość ta jawi się w pełni odniesień poety do natury i darwinizmu zapładniającego manichejską wizję dziejów oraz...
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A structure and simulation-driven design of compact CPW-fed UWB antenna
PublicationIn this letter, a structure of a miniaturized ultra-wideband CPW-fed antenna and its design proce-dure are presented. The antenna is a modified version of the design previously proposed in the literature, with additional degrees of freedom introduced in order to improve the structure flexibility. The small size is achieved by executing a rigorous optimization procedure that consists of two stages: (i) smart random search carried...
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Inverse surrogate models for fast geometry scaling of miniaturized dual-band couplers
PublicationRe-design of microwave structures for various sets of performance specifications is a challenging task, particularly for compact components where considerable electromagnetic (EM) cross-couplings make the relationships between geometry parameters and the structure responses complex. Here, we address geometry scaling of miniaturized dual-band couplers by means of inverse surrogate modeling. Our approach allows for fast estimation...
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Novel structure and design of compact UWB slot antenna
PublicationIn this paper, a novel structure of a compact UWB slot antenna is presented along with a simulation-driven design optimization algorithm for adjusting geometry parameters of the device. Our primary objective is to obtain small footprint of the structure while maintaining its acceptable electrical performance. It is achieved by introducing sufficiently large number of geometry degrees of freedom, including increased number of parameterized...
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Comprehensive dimension scaling of multi-band antennas for operating frequencies and substrate parameters
PublicationIn this paper, low-cost and comprehensive redesign of multi-band antennas with respect to the operating frequencies and material parameters of the substrate is presented. Our approach exploits an inverse surrogate model identified based on a set of reference designs optimized at the level of coarse-discretization EM simulations of the antenna at hand. An iterative correction procedure is also implemented to account for the initial...
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Emisyjność i odporność na promieniowanie EM w aparaturze biomedycznej 2023
e-Learning CoursesZastosowanie w biomedycynie zaleceń dotyczących zasad kompatybilności elektromagnetycznej. Omówienie wymagań konstrukcyjnych jaki obowiązujących zagadnień prawnych obowiązujących dla urządzeń stosowanych w medycynie. Przedstawienie opisów stosowanych obecnie metod oceny zgodności oraz stosowanych elementów i układów ochronnych wraz z metodami ich symulacji.
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Emisyjność i odporność na promieniowanie EM w aparaturze biomedycznej 2024
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The Shadow of God in the Garden of the Philosopher. The Parc de La Villette in Paris in the Context of Philosophy of Chôra. Part I-V
PublicationThe book Shadow of God in the Philosopher's Garden. Parcde La Villette in Paris in the context of the philosophy of chôra presents the philosophical discussions that accompanied the design of the extensive park in the Parisian district of La Villette. The core of the park's theoretical framework were texts by Bernard Tschumi, in which he questioned the traditional ways of creating...
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Reuse of Magnesol® for Purification of Biodiesel
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WEiA - Et sem.1 gr.3 - Propedeutyka Matematyki 2023/2024 (J.Woroń)
e-Learning CoursesKurs z ćwiczeń do przedmiotu "Propedeutyka Matematyki" przeznaczony dla studentów Wydziału Elektrotechniki i Automatyki na kierunku Elektrotechnika (grupa dziekańska 3) w roku akademickim 2023/2024 (semestr zimowy).
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Technologia preparatów enzymatycznych 2023/2024 (dla kierunku Inżynieria Biomedyczna)
e-Learning CoursesKurs przeznaczony jest dla studentów: kierunek Inżynieria Biomedyczna, specjalność: Fizyka medyczna (WFTiMS) realizujących zajęcia w semestrze 2 i semestrze 3, studiów II stopnia. Kurs obejmuje zarówno wykłady, jak i zajęcia laboratoryjne z przedmiotu Technologia preparatów enzymatycznych. Za kurs odpowiada dr inż. Izabela Sinkiewicz, prof. PG.
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WILiŚ - IS sem.1 gr IS-2- Matematyka I 2023/2024 (J.Woroń)
e-Learning CoursesKurs z ćwiczeń do przedmiotu "Matematyka I" przeznaczony dla studentów Wydziału Inżynierii Lądowej i Środowiska specjalności Inżynieria sanitarna (grupa dziekańska 2) w roku akademickim 2023/2024 (semestr zimowy).
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Urbansketching
PublicationKatalog wystawy prezentującej dorobek warsztatów Urban Sketchers em Benfica : viajar pelo bairro com um caderno, które odbyły się w Lizbonie w dzielnicy Benfica 6 listopada 2011. Na stronach 20 i 21 tekst autora i 4 rysunki
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Cost-efficient multi-objective design optimization of antennas in highly-dimensional parameter spaces
PublicationMulti-objective optimization of antenna structures in highly-dimensional parameter spaces is investigated. For expedited design, variable-fidelity EM simulations and domain patching algorithm are utilized. The results obtained for a monopole antenna with 13 geometry parameters are compared with surrogate-assisted optimization involving response surface approximation modeling.
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Fusion 360 ENG
e-Learning Courses© 2017 Autodesk, Inc. All rights reserved.
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Fusion 360 PL
e-Learning Courses© 2017 Autodesk, Inc. All rights reserved.
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Global Design Optimization of Microwave Circuits Using Response Feature Inverse Surrogates
PublicationModern microwave design has become heavily reliant on full-wave electromagnetic (EM) simulation tools, which are necessary for accurate evaluation of microwave components. Consequently, it is also indispensable for their development, especially the adjustment of geometry parameters, oriented towards performance improvement. However, EM-driven optimization procedures incur considerable computational expenses, which may become impractical...
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Tolerance-Aware Optimization of Microwave Circuits by Means of Principal Directions and Domain-Restricted Metamodels
PublicationPractical microwave design is most often carried out in the nominal sense. Yet, in some cases, performance degradation due to uncertainties may lead to the system failing to meet the prescribed specifications. Reliable uncertainty quantification (UQ) is therefore important yet intricate from numerical standpoint, especially when the circuit at hand is to be evaluated using electromagnetic (EM) simulation tools. Tolerance-aware...
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Low-Cost Modeling of Microwave Components by Means of Two-Stage Inverse/Forward Surrogates and Domain Confinement
PublicationFull-wave electromagnetic (EM) analysis is one of the most important tools in the design of modern microwave components and systems. EM simulation permits reliable evaluation of circuits at the presence of cross-coupling effects or substrate anisotropy, as well as for accounting for interactions with the immediate environment. However, repetitive analyses required by EM-driven procedures, such as parametric optimization or statistical...
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Design-Oriented Two-Stage Surrogate Modeling of Miniaturized Microstrip Circuits with Dimensionality Reduction
PublicationContemporary microwave design heavily relies on full-wave electromagnetic (EM) simulation tools. This is especially the case for miniaturized devices where EM cross-coupling effects cannot be adequately accounted for using equivalent network models. Unfortunately, EM analysis incurs considerable computational expenses, which becomes a bottleneck whenever multiple evaluations are required. Common simulation-based design tasks include...
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On Computationally-Efficient Reference Design Acquisition for Reduced-Cost Constrained Modeling and Re-Design of Compact Microwave Passives
PublicationFull-wave electromagnetic (EM) analysis has been playing a major role in the design of microwave components for the last few decades. In particular, EM tools allow for accurate evaluation of electrical performance of miniaturized structures where strong cross-coupling effects cannot be adequately quantified using equivalent network models. However, EM-based design procedures (parametric optimization, statistical analysis) generate...
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Globalized Parametric Optimization of Microwave Passive Components Using Simplex-Based Surrogates
PublicationOptimization-based parameter adjustment involving full-wave electromagnetic (EM) simulation models is a crucial stage of present-day microwave design process. In fact, rigorous optimization is the only reliable mean permitting to simultaneously handle multiple geometry/material parameters, objectives, and constraints. Unfortunately, EM-driven design is a computationally intensive endeavor. While local tuning is usually manageable,...
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Wygraj indeks WETI PG - 2023
e-Learning CoursesWygraj Indeks WETI, 2023 Instrukcja rejestracji uczestnictwa i zgłoszenia projektu: Logowanie w systemie e-nauczanie PG, strona www: https://enauczanie.pg.edu.pl/moodle/ , wybieramy "Zaloguj się" a następnie w polu po prawej stronie o nazwie "Nie masz konta politechnicznego? klikamy ponownie "Zaloguj się" i w zależności czy już mamy konto w systemie e-nauczanie PG czy nie zakładamy i logujemy się na to konto lub tylko logujemy. Wyszukujemy...
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Wygraj indeks WETI edycja 2024
e-Learning CoursesWygraj Indeks WETI, 2024 Instrukcja rejestracji uczestnictwa i zgłoszenia projektu: Logowanie w systemie e-nauczanie PG, strona www: https://enauczanie.pg.edu.pl/moodle/ , wybieramy "Zaloguj się" a następnie w polu po prawej stronie o nazwie "Nie masz konta politechnicznego? klikamy ponownie "Zaloguj się" i w zależności czy już mamy konto w systemie e-nauczanie PG czy nie zakładamy i logujemy się na to konto lub tylko logujemy. Wyszukujemy...
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Statystyka matematyczna 2022/23
e-Learning CoursesStatystyka matematyczna - dr inż. Karol Flisikowski Studia niestacjonarne AG I (2022/23)
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WILiŚ - IS sem.1 - Matematyka I 2022/2023 (J.Woroń)
e-Learning CoursesKurs z ćwiczeń do przedmiotu "Matematyka I" przeznaczony dla studentów Wydziału Inżynierii Lądowej i Środowiska specjalności Inżynieria sanitarna (grupy dziekańskie 1 i 2) w roku akademickim 2022/2023 (semestr zimowy).
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A Mesh Deformation Technique Based on Solid Mechanics for Parametric Analysis of High-Frequency Devices With 3-D FEM
PublicationIn this paper, a versatile technique for mesh defor- mation is discussed, targeted at the electromagnetic (EM) field simulation of high-frequency devices using the 3-D finite element method (FEM). The approach proposed applies a linear elasticity model to compute the displacements of the internal mesh nodes in 3-D when the structure geometry is changed. The technique is compared with an alternative approach...
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Statistical analysis and robust design of circularly polarized antennas using sequential approximate optimization
PublicationIn the paper, reliable yield estimation and tolerance-aware design optimization of circular polarization (CP) antennas is discussed. We exploit auxiliary kriging interpolation models established in the vicinity of the nominal design in order to speed up the process of statistical analysis of the antenna structure at hand. Sequential approximate optimization is then applied to carry out robust design of the antenna, here, oriented...
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Rapid dimension scaling of compact microwave couplers with power split correction
PublicationIn this paper, a technique for rapid re-design ofcompact microwave couplers with respect to operating frequency is discussed. Our methodology involves an inverse surrogate model setup using several reference designs optimized (at the level of equivalent circuit representation of the coupler) for a set of operating frequencies within a range of interest. The surrogate establishes the relationship between the operating frequency...
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Geoinżynieria Środowiska -IŚ nst mgr sem. 2 - r.akadem. 2023/24
e-Learning CoursesIŚ nst mgr sem. 2
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Badania Operacyjne i Metody Numeryczne 2023/24
e-Learning CoursesZajęcia z Badań operacyjnych dla kierunku Transport - sem. III inż.
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Geoinżynieria Środowiska 2022/23
e-Learning CoursesIŚ mgr sem. I (wszystkie specjalności)
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Badania Operacyjne i Metody Numeryczne 2022/23
e-Learning CoursesZajęcia z Badań operacyjnych dla kierunku Transport - sem. III inż.
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Geoinżynieria Środowiska - IŚ stacj. mgr sem. 1 - r.akadem. 2023/24
e-Learning CoursesIŚ mgr sem. I (wszystkie specjalności)
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Analiza wpływu generacji wiatrowej na cenę rozliczeniową odchylenia na rynku bilansującym w Polsce
PublicationTematem artykułu jest analiza wpływu generacji wiatrowej na ustalanie się Ceny Rozliczeniowej Odchylenia (CRO) na Rynku Bilansującym (RB) w Polsce. Autorzy we wstępie swej pracy przestawiają stan aktualny energetyki wiatrowej oraz wyjaśniają sposób ustalania się ceny na Rynku Bilansującym. Poruszają tematykę przesuwania się stosu jednostek wytwórczych, który ich zdaniem zależy bezpośrednio od aktualnych warunków pracy wiatrowych...
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WIMiO - OiKM gr. 1 i 2 - Matematyka II 2023/2024 (J.Woroń)
e-Learning CoursesKurs z ćwiczeń do przedmiotu "Matematyka II" przeznaczony dla studentów Wydziału Inżynierii Mechanicznej i Okrętownictwa na kierunku Okręty i Konstrukcje Morskie (grupy 1 i 2) w roku akademickim 2023/2024 (semestr letni).
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BUDOWA DRÓG KOLEJOWYCH II - r. 2022/2023
e-Learning CoursesCelem przedmiotu jest zaznajomienie studenta z wiedzą na temat budownictwa kolejowego: elementami budowlanymi toru kolejowego, technologiami budowy, maszynami torowymi, sposobami utrzymania i diagnostyki toru kolejowego. Przedmiot składa się z części wykładowej i projektowej.
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BUDOWA DRÓG KOLEJOWYCH II - r. 2023/2024
e-Learning CoursesCelem przedmiotu jest zaznajomienie studenta z wiedzą na temat budownictwa kolejowego: elementami budowlanymi toru kolejowego, technologiami budowy, maszynami torowymi, sposobami utrzymania i diagnostyki toru kolejowego. Przedmiot składa się z części wykładowej i projektowej.
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What is important for you makes you think about the pandemic differently: moral foundations, pandemic-related fears and convictions (Lo que cada uno consideramos importante nos hace reflexionar sobre la pandemia de forma distinta: fundamentos morales, temores y convicciones sobre la pandemia)
PublicationBuilding on the Moral Foundations Theory and findings regarding the linkage of values, convictions and beliefs, the aim of the study was to compare people displaying various constellations of moral foundations regarding their tolerance of ambiguity, fear of COVID-19 (FCV), endorsement of COVID-19 conspiracy theories and the extent to which they believed in the effectiveness of five COVID-19 preventive measures. This study was...
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Dobre praktyki w zakresie wzmacniania interesariuszy regionalnych systemów innowacji
PublicationCelem Regionalnej Strategii Innowacji Województwa Podkarpackiego na lata 2021-2030 jest transformacja systemu gospodarczego województwa podkarpackiego w kierunku gospodarki konkurencyjnej, opartej na wiedzy i wykorzystaniu nowoczesnych technologii, uwzględniającej aspiracje przedsiębiorców, społeczeństwa oraz globalne uwarunkowania rozwoju. Do osiągnięcia tego celu niezbędna jest współpraca wszystkich elementów tworzących...
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Efficient Multi-Fidelity Design Optimization of Microwave Filters Using Adjoint Sensitivity
PublicationA simple and robust algorithm for computationally efficient design optimiza-tion of microwave filters is presented. Our approach exploits a trust-region (TR)-based algorithm that utilizes linear approximation of the filter response obtained using adjoint sensitivity. The algorithm is sequentially executed on a family of electromagnetic (EM)-simulated models of different fidelities, starting from a coarse-discretization one, and...
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Multi-objective optimization of microwave couplers using corrected domain patching
PublicationPractical design of microwave components and circuits is a compromise between various, often conflicting objectives. In case of compact structures, the trade-offs are typically concerned with the circuit size and its electrical performance. Comprehensive information about the best possible trade-offs can be obtained by means of multi-objective optimization. In this paper, we propose a computationally efficient technique for identifying...
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Design of a compact planar transmission line for miniaturized rat-race coupler with harmonics suppression
PublicationThis paper presents an elegant yet straightforward design procedure for a compact rat-race coupler (RRC) with an extended harmonic suppression. The coupler’s conventional λ/4 transmission lines (TLs) are replaced by a specialized TL that offers significant size reduction and harmonic elimination capabilities in the proposed approach. The design procedure is verified through the theoretical, circuit, and electromagnetic (EM) analyses,...
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Scalability of surrogate-assisted multi-objective optimization of antenna structures exploiting variable-fidelity electromagnetic simulation models
PublicationMulti-objective optimization of antenna structures is a challenging task due to high-computational cost of evaluating the design objectives as well as large number of adjustable parameters. Design speedup can be achieved by means of surrogate-based optimization techniques. In particular, a combination of variable-fidelity electromagnetic (EM) simulations, design space reduction techniques, response surface approximation (RSA) models,...
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On Improved-Reliability Design Optimization of High-Frequency Structures Using Local Search Algorithms
PublicationThe role of numerical optimization has been continuously growing in the design of high-frequency structures, including microwave and antenna components. At the same time, accurate evaluation of electrical characteristics necessitates full-wave electromagnetic (EM) analysis, which is CPU intensive, especially for complex systems. As rigorous optimization routines involve repetitive EM simulations, the associated cost may be significant....
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Generalized Formulation of Response Features for Reliable Optimization of Antenna Input Characteristics
PublicationElectromagnetic (EM)-driven parameter adjustment has become imperative in the design of modern antennas. It is necessary because the initial designs rendered through topology evolution, parameter sweeping, or theoretical models, are often of poor quality and need to be improved to satisfy stringent performance requirements. Given multiple objectives, constraints, and a typically large number of geometry parameters, the design closure...