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Publications from the year 2024
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Novel Complementary Resonator for Dielectric Characterization of Substrates Based on Permittivity and Thickness
- Tanveer Haq Ul
- Sławomir Kozieł
This paper presents a novel complementary resonator featuring high sensitivity, low fabrication cost, and improved performance. The proposed structure consists of a complementary concentric square and circular ring resonator (CCSCRR) with multiple splits to enhance the inductance of the resonator. The proposed CCSCRR is coupled to a microstrip transmission line with an impedance of fifty ohms to create a high-sensitivity sensor. The lumped element equivalent circuit is employed to explain the sensor's operating principle. The geometric parameters of the CCSCRR are optimized to resonate at 15 GHz and the optimized sensor is fabricated on 0.762 mm thick dielectric substrate AD250 (εr = 2.5 ± 0.04). Dielectric materials with relative permittivity ranging from 2.5 to 10.2 and thickness from 0.508 mm to 1.905 mm are employed to investigate the properties of the proposed sensor and to carry out its calibration. Based on the measured resonant frequencies of the CCSCRR sensor when loaded with different materials under test (MUTs), an inverse regression model is constructed to predict the permittivity of the MUT. Comparisons with state-of-the-art microwave devices show that the proposed design is superior in terms of sensitivity, dielectric characterization reliability, and the applicability scope in terms of the MUT’s thickness and permittivity.
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Novel fused pyran derivatives induce apoptosis and target cell cycle progression in anticancer efficacy against multiple cell lines.
- K. Fabitha
- Anoop Kallingal
- Natalia Maciejewska
- C. G. Arya
- Munugala Chandrakanth
- Neethu Mariam Thomas
- Yupeng Li
- Ramesh Gondru
- Manne Munikumar
- Janardhan Banothu
Nitrogen-based heterocycles such as pyrazole, imidazole, 1,2,4-triazole, benzimidazole, and benzotriazole substituted fused pyran derivatives (6a–e, 8a–e, 10a–e, 12a–e,&14a–e) have been synthesized and tested for their in vitro anticancer efficacies against MCF7, A549, and HCT116 cancer cell lines. Among the compounds, 6e, 14b, and 8c were identified as the most potent against MCF7, A549, and HCT116, with IC50 values of 12.46 2.72 mM, 0.23 0.12 mM, and 7.58 1.01 mM, respectively. Further studies demonstrated that these compounds can change cellular and nuclear morphology and inhibit colony formation in the tested cancer cells. They also remarkably block/inhibit the cell cycle progression of cancer cells at various phases. DNA damage analysis and apoptosis studies revealed that these compounds have the potential to induce DNA double-strand breaks and apoptosis. In silico absorption, distribution, metabolism, excretion, and toxicity (ADMET) properties of the potent compounds were assessed, revealing that all the compounds exhibited favorable pharmacokinetic and toxicological properties. The potent compounds identified from this study can be considered as a lead for further drug design and development.
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Novel materials and approaches for solid-phase (micro) extraction in LC-MS-based metabolomics
- Michał Młynarczyk
- Mariusz Belka
- Weronika Hewelt-Belka
Metabolomics offers a unique approach to study biological systems. Liquid chromatography coupled to mass spectrometry serves as a powerful analytical tool to analyze complex mixtures of metabolites. However, successful metabolomic analysis relies on sample preparation. While untargeted analysis traditionally favors nonselective procedures like liquid-liquid extraction (LLE), these methods can compromise analytical performance due to limited analyte enrichment and potential matrix interferences. Solid-phase extraction (SPE) has emerged as a well-established and versatile technique for this purpose, offering advantages over other traditional methods like LLE. This review explores the applications of SPE and solid-phase microextraction (SPME) in LC-MS-based metabolomics. We discuss various modes of SPE, ranging from conventional flow-through cartridges and plates to approaches involving the dispersion of sorbent in a sample, as well as sorbents, their properties, and the diverse geometries of support materials employed in SPME. This review underscores the potential of emerging extraction protocols to further accelerate metabolomics research.
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Novel monovalent and multivalent recombinant proteins of Borrelia burgdorferi sensu lato with potential diagnostic value – construction and biotechnological production
- Weronika Grąźlewska
The diverse antigenic structure of Borrelia burgdorferi sensu lato (s.l.) and the low degree of protein sequence conservation between genospecies causes many limitations in serodiagnosis of Lyme disease (LD). Using expression systems based on Escherichia coli, five monovalent B. burgdorferi s.l. recombinant proteins were produced. i.e., BB0108, BB0126, BB0298, BB0323, BB0689 (each in three variants derived from Borrelia afzelii, Borrelia burgdorferi sensu stricto, Borrelia garinii) and four multivalent chimeric proteins containing fragments of BmpA, BBK32 and BBA64 antigens. Data obtained from bioinformatic analysis of the amino acid sequence and linear epitope mapping with polypeptide array were used to design chimeric proteins. Subsequently, Western blot (WB) and ELISA determined the reactivity of the obtained antigens with specific anti-B. burgdorferi s.l. antibodies contained in human sera. The results indicate that BB0108 and BB0323 show moderate reactivity with specific IgG and IgM in WB and ELISA, regardless of the antigen variant used. At the same time, the obtained chimeric proteins showed high reactivity with IgG in WB. In addition, it has been shown that epitope mapping can be useful in the design of chimeric proteins that exhibit reactivity with a specific antibody isotype to increase the effectiveness of Lyme disease serodiagnosis.
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Novel sorptive extraction techniques in bioanalysis evaluated by Blue Applicability Grade Index: The paradigm of fabric phase sorptive extraction and capsule phase microextraction
- Natalia Manousi
- Justyna Płotka-Wasylka
- Victoria F. Samanidou
Fabric phase sorptive extraction (FPSE) and capsule phase microextraction (CPME) are two sol-gel derived microextraction techniques that emerged in the last decade towards the minimization of the environmental impact of conventional sample preparation approaches. Complementary to the well-established green metric tools, Blue Applicability Grade Index (BAGI) was recently proposed for the evaluation of method’s practicability. In this frame, BAGI evaluates the main characteristics of the sample preparation and analytical method (i.e., type of analysis, number of analytes, sample preparation, sample volume, sample throughput and simultaneous sample preparation, reagents and materials, instrumentation and automation degree, the fitness for purpose, and the automation degree) which revolve around the practical aspects of White Analytical Chemistry. The new index could easily identify the weak and strong points of each protocol for the successful evaluation of their practicality. In this article, BAGI was applied for the evaluation of different FPSE and CPME methods used in bioanalysis, proving their applicability.
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Nowe zasady projektowania infrastruktury tramwajowej
- Jacek Szmagliński
Wprowadzone we wrześniu 2022 roku zmiany w zasadach projektowania dróg, zwieńczone nowym Rozporządzeniem Ministra Infrastruktury w sprawie przepisów techniczno-budowlanych dotyczących dróg publicznych spowodowały pojawienie się daleko idących konsekwencji w przypadku projektowania tras tramwajowych.
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Numerical Analysis of Mice Carotid Arteries’ Response Emphasizing the Importance of Material Law Constants’ Validation
- Bartosz Sobczyk
- Jacek Chróścielewski
- Krzysztof Wilde
In this paper, a detailed validation of the passive material properties of mice carotid arteries and constants of the Fung and Holzapfel hyperelastic material laws is conducted by means of static nonlinear FEM analyses. The response of the carotid arteries in an inflation test is studied here for the following mouse models: wild-type, mdx, sgcd−/−, Eln+/+, Eln+/−, Fbln5+/+, and Fbln5−/−. All FEM computations are conducted on models that have been preliminarily checked for their reliability. The results of the calculations, namely, the relation between the internal pressure and the artery outer diameter, are verified against experimental responses and the applicability of the laws is assessed. New sets of Holzapfel constitutive relation constants are proposed for Eln+/+ and Fbln5−/− mice. Finally, the problem of carotid artery buckling is also discussed. The buckling pressures of the arteries are predicted using FEM models and nonlinear static analyses. These values are compared with the reference experimental results, which allow for further validation of the constitutive relations. The research emphasizes that computations and numerical methods enable an accurate description of bioengineering processes and behaviors but only if the models used are appropriately validated.
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Numerical Determination of the Load-Bearing Capacity of a Perforated Thin-Walled Beam in a Structural System with a Steel Grating
- Arkadiusz Denisiewicz
- Tomasz Socha
- Krzysztof Kula
- Wojciech Macek
- Wojciech Błażejewski
- Grzegorz Lesiuk
This article presents the results of numerical simulations of a structural system consisting of steel perforated thin-walled beams and a steel grating. The simulations were conducted using the finite element method. The analysis took into account physical and geometric nonlinearity as well as the contact between the steel grating and the beams. The main goal of the research was to develop load-bearing curves for the main beam in the span range of 3–6 m and to identify destruction patterns depending on the span of the structural system. For the purpose of validating the developed numerical model, laboratory tests were conducted on two structural systems with spans of 3 m and 6 m, as well as tests on the strength parameters of the material taken from the tested beams. The laboratory tests confirmed the correctness of the proposed numerical model, which allowed for the simulation of the behavior of the structural system in the full range of spans.
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Numerical Method for Stability Testing of Fractional Exponential Delay Systems
- Tomasz Stefański
- Sebastian Dziedziewicz
- Piotr Kowalczyk
- Jacek Gulgowski
A numerical method for stability testing of fractional exponential systems including delays is presented in this contribution. We propose the numerical test of stability for a very general class of systems with a transfer function, which includes polynomials and exponentials of fractional powers of the Laplace variable s combined with delay terms. Such a system is unstable if any root of its characteristic equation, which usually involves transcendental functions, is localized on the right half-plane of the s-domain. Due to the infinite size of the right half-plane, the bilinear transformation is employed to map it onto the unit disc on the complex plane. Then, the global roots and poles finding algorithm based on phase analysis is executed on the unit disc. That is, the roots of the characteristic equation for the considered system are detected with the use of an efficient algorithm based on domain meshing and Cauchy’s argument principle. In order to demonstrate the efficiency and applicability of the proposed numerical method, we executed stability tests for fractional exponential delay systems, which are considered benchmarking cases in other publications. It occurs that, each time, the proposed method correctly evaluates the system stability. However, unlike other methods, it is a very general technique that allows evaluation of almost any system, which does not require any preprocessing of the characteristic equation to execute the stability test.
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Numerical Modeling and Simulation of Vehicular Crashes into Three-Bar Metal Bridge Rail
- Howie Fang
- Christopher Jaus
- Qian Wang
- Emre Palta
- Łukasz Pachocki
- Dawid Bruski
Advanced finite element (FE) modeling and simulations were performed on vehicular crashes into a three-bar metal bridge rail (TMBR). The FE models of a sedan, a pickup truck, and a TMBR section were adopted in the crash simulations subject to Manual for Assessing Safety Hardware (MASH) Test Level 2 (TL-2) and Test Level 3 (TL-3) requirements. The test vehicle models were first validated using full-scale physical crash tests conducted on a two-bar metal bridge using a sedan and a pickup truck with similar overall physical properties and sizes to their respective vehicles used in the simulations. The validated vehicular models were then used to evaluate the crash performance of the TMBR using MASH evaluation criteria for structural adequacy, occupant risk, and post-impact trajectory. The TMBR met all MASH TL-2 requirements but failed to meet the MASH TL-3 Criteria H and N requirements when impacted by the sedan. The TMBR was also evaluated under in-service conditions (behind a 1.52 m wide sidewalk) and impacted by the sedan under MASH TL-3 conditions. The simulation results showed that the TMBR behind a sidewalk met all safety requirements except for the occupant impact velocity in the longitudinal direction, which exceeded the MASH limit by 3.93%.
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Numerical modeling of PFAS movement through the vadose zone: Influence of plant water uptake and soil organic carbon distribution
- Barbara Biesek
- Adam Szymkiewicz
- Jirka Simunek
- Anna Gumuła-Kawęcka
- Beata Jaworska-Szulc
In this study, we investigated the effects of soil organic carbon (SOC) distribution and water uptake by plant roots on PFAS movement in the vadose zone with a deep groundwater table under temperate, humid climate conditions. Two series of numerical simulations were performed with the HYDRUS computer code, representing the leaching of historical PFOS contamination and the infiltration of water contaminated with PFOA, respectively. We considered soil profiles with three distributions of SOC (no SOC, realistic SOC distribution decreasing with depth, and uniform SOC equal to the content measured in topsoil), three root distributions (bare soil, grassland, and forest), and three soil textures (sand, sandy loam, and loam). The SOC distribution had a profound impact on the velocity of PFOS movement. The apparent retardation factor for realistic SOC distribution was twice as large as for the scenario with no SOC and more than three times smaller than for the scenario with uniformly high SOC content. We also showed that the root distribution in soil profoundly impacts the simulations of PFAS migration through soil. Including the root zone significantly slows down the movement of PFAS, primarily due to increased evapotranspiration and reduced downward water flux. Another effect of water uptake by plant roots is an increase of PFAS concentrations in soil water (evapo-concentration). The evapo-concentration and the slowdown of PFAS movement due to root water uptake are more significant in fine-textured soils than in sand.
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Numerical modelling of different airbag folding patterns and their influence on occupant responses in frontal vehicle impact
- Łukasz Pachocki
- Howie Fang
This paper presented a procedure for airbag folding for the application in occupant safety studies and analysed the influence of different airbag folding patterns on the occupant severity in frontal impact. Airbags were folded in two patterns: zig-zag and top-roll, using two folding techniques: Initial Metric Method and Explicit Folding. The explicit folding was found to be more expensive in terms of preparation time. However, this approach provided more control over the whole folding process. The Initial Metric Method was more robust, however, it’s hard to apply for complex folding patterns. Deployments of airbags were validated against experimental data of pendulum tests. Those airbag models were applied to 2006 Ford F250 pickup truck. This vehicle was used for simulations of frontal vehicle impact where the 50th male Hybrid III crash test dummy was an occupant. Results of this simulation were compared with an actual test with a similar vehicle, under the same impact conditions. Results showed the head and chest accelerations were lower for top-roll folded airbag cases, however neck normal forces were higher compared to zig-zag folded airbag. The internal pressure in the early stage of deployment was 33% higher for the top-roll folded airbags.
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Numerical Test for Stability Evaluation of Analog Circuits
- Tomasz Stefański
- Piotr Kowalczyk
- Jacek Gulgowski
In this contribution, a new numerical test for the stability evaluation of analog circuits is presented. Usually, if an analog circuit is unstable then the roots of its characteristic equation are localized on the right half-plane of the Laplace s- plane. Because this region is unbounded, we employ the bilinear transformation to map it into the unit disc on the complex plane. Hence, the existence of any root inside the unit disc implies circuit instability. In our test, we employ the global roots and poles finding algorithm based on phase analysis to detect the roots of the characteristic equation inside the unit disc. Unlike other stability tests, our approach allows one to evaluate the stability of analog circuits and systems whose characteristic equations are not polynomials. In order to demonstrate its efficiency, generality and applicability, we analyze a memristor-based chaotic circuit whose stability depends on the value of the fractional-order parameter. The proposed test correctly detects the parameter ranges of either stability or instability for the considered analog circuit.
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Nutritional Characterization of Whole Mangosteen Pulp with Seeds and Its Application as an Alternate Functional Ingredient in Crackers
- Nisa Saelee
- Roberto Castro Munoz
- Worawan Panpipat
- Manat Chaijan
Mangosteen (Garcinia mangostana L.) fruits are high in nutrients and phytochemical compounds. The use of fresh whole mangosteen fruit pulp, including the seeds (MFS), instead of flour and sugar in crackers not only enhances the functional nutritional and medicinal benefits for consumers but also adds value to the products. The study investigated the nutritional value of MFS and then employed MFS to formulate MFS-based crackers with varying levels of MFS substitution in order to develop crackers enriched with functional ingredients. Proximate compositions, amino acids, sugars, minerals, fatty acids, color, texture, and antiradical properties were analyzed in fresh MFS and MFS-based crackers. The results indicated that MFS can be a source of crude fiber, minerals, amino acids, omega-6, and omega-9 fatty acids. Adding 13%, 18%, and 23% ground MFS to the crackers improved their nutritional value and physical characteristics compared to the control (0% MFS). MFS-based crackers promoted significantly (p < 0.05) higher fiber (4.04 ± 0.00–5.66 ± 0.01%gdw), ash (2.45 ± 0.00–2.74 ± 0.01%gdw), and protein (4.72 ± 0.00–7.72 ± 0.05%gdw) than the control without MFS addition. Carbohydrates (including dietary fiber) and total sugar decreased significantly (p < 0.05) to 57.68 ± 0.00–55.21 ± 0.11%gdw and 2.37 ± 0.00–4.42 ± 0.01%gdw, respectively, in all MFS-based crackers compared to the control basal cracker with added sugar. Moreover, MFS-based crackers contained oleic acid (C18:1, omega-9) at 5.19–5.78%gdw and linoleic acid (C18:2, omega-6) at 0.63–0.77%gdw. Furthermore, the MFS-based crackers had higher levels of minerals (i.e., potassium, phosphorus, sulfur, calcium, and magnesium) and bioactive compounds such as total phenolic acid and total flavonoid, as well as antiradical activity. This study revealed that MFS can be applied as an alternative functional ingredient in the manufacturing of nutritious cracker products, and the findings could potentially be implemented to promote the utilization of mangosteen seed as a sustainable agricultural product and waste-reducing method.
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Observing its long-term effects on a short-term, multi-day evaluation of the effectiveness of hearing aid use
- Piotr Szymański
- Bożena Kostek
The main objective of the research study was to develop a method for evaluating the effectiveness of hearing protection with hearing aids tailored to the needs and prevailing conditions in the acoustic environments where the elderly most often reside. The method was also intended to estimate the benefits of hearing aids and allow prediction of such an effect based on a short-term trial. It is noteworthy that a short-term evaluation of effectiveness is usually made 30-45 days after the first fitting of hearing aids. The present study evaluated data obtained only after seven days of hearing aid use. Also, modifying the proposed method included the possibility of including a set of sounds, allowing auditory familiarization with environmental situations.
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Occurrence of specific pollutants in a mixture of sewage and rainwater from an urbanized area
- Magdalena Gajewska
- Karolina Fitobór
- Wojciech Artichowicz
- Rafał Ulańczyk
- Małgorzata Kida
- Katarzyna Kołecka
Urban runoff appears to be a pathway for transferring new emerging pollutants from land-based sources to the aquatic environment. This paper aimed to identify and describe the groups of pollutants present in rainwater surface runoff as well as their mixture with wastewater in the combined sewer system from urbanized catchments and to determine the correlations between these pollutants. Four leading groups of new emerging pollutants have been identified that may be present in rainwater and municipal wastewater mixtures. The samples were tested for microplastics, phthalic acid esters, pesticides, and polycyclic aromatic hydrocarbons as well as basic parameters. The pilot site was Słupsk (northwestern Poland). We conducted nine sampling campaigns at three points. The results of the present study revealed that (i) polycyclic aromatic hydrocarbons were not present in the tested samples; (ii) the selected organochlorine pesticides were detected during one campaign in the dry season and therefore were not of critical importance; (iii) out of the 11 analyzed phthalic acid esters, five selected substances released from commonly used plastic products were present; and (iv) the number of microplastics contained in the tested samples ranged from 1,400 to 14,036 pcs/L and evenoccurred during pure rainfall.
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OCENA FUNKCJONOWANIA PASÓW RUCHU DLA ROWERÓW – PRZYPADEK TRÓJMIASTA
- Katarzyna Cholc
- Joanna Wachnicka
Artykuł dotyczy analizy nagrań trzech wybranych odcinków skrzyżowań w Gdańsku, na których znajdują się pasy dla rowerów wyznaczone w ramach jezdni. Na podstawie ww. materiału filmowego została wykonana ocena organizacji i natężenia ruchu, zachowania rowerzystów i kierowców oraz analiza sytuacji konfliktowych. Na każdym z trzech poligonów badawczych zostały przeanalizowane zachowania rowerzystów w ich obrębie. Przedstawiono liczbę rowerzystów na skrzyżowaniach w przedziale godzinowym (od godz. 6.00 do godz. 20.00) w zależności od wybranej przez nich trasy, procentowy udział rowerzystów na wybranych trasach na skrzyżowaniu oraz procentowy udział rowerzystów na pasach rowerowych i poza jezdnią na skrzyżowaniu. Z przedstawionych wyników wywnioskowano, iż niewielu cyklistów skorzystało z dostępnych pasów rowerowych na analizowanych skrzyżowaniach. Znacząca ich liczba wybrała trasy biegnące po chodnikach znajdujących się w obrębie skrzyżowania. Następnie skupiono się na obserwacji interakcji pomiędzy rowerzystami a kierowcami na jezdni. Zostały opisane i zliczone sytuacje niebezpieczne, które powtarzały się najczęściej. Na wszystkich trzech skrzyżowaniach najczęsciej obserwowano najeżdżanie przez pojazdy na pasy rowerowe. Przestrzeń przeznaczona dla rowerzystów była naruszana, co mogłoby się skończyć kolizją. Obserwacje te doprowadziły do postawienia pytania: czy zastosowanie pasów rowerowych w takich miejscach ma sens i czy jest to rozwiązanie bezpieczne dla rowerzystów. Efektem ww. analizy jest stwierdzenie, że stosowanie pasów rowerowych na skrzyżowaniach z dużą liczbą pasów ruchu oraz trudną geometrią skrzyżowania nie jest odpowiednim rozwiązaniem.
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Ocena stanu chemicznego i zagrożeń wód podziemnych oraz powierzchniowych w rejonie Zalewu Wślanego
- Małgorzata Pruszkowska-Caceres
- Patrick Barwinski
- Jakub Bożejewicz
- Szymon Grabowski
- Jakub Kopanicki
- Kacper Aleksandrowicz
The purpose of the research was to examine how factors such as land use and land management affect the quality of groundwater and surface water. These studies were possible thanks to funding from the IDUB Technetium Talent Management Grants project titled “Assessment of Anthropogenic Threat to Groundwater and Surface Water in the Region of the Vistula Lagoon”. The research area included a section of the Vistula Spit, ¯u³awy Wielkie and the coastal waters of the Vistula Lagoon. Field studies were conducted during three field trips; 15 groundwater points and 35 surface water points were examined. During these studies parameters such as temperature, pH, electrical conductivity, and the content of nitrogen, nitrates, phosphates, and sulfates were measured. In the Żuławy area it was found that surface water and groundwater are under the direct influence of the Vistula Lagoon, causing their salinity increase. Locally, man-induced chemical changes are also visible. The inflow of nutrients from fertilization of agricultural fields and uncontrolled discharge of wastes into drainage canals have been observed. The local anthropogenic impact on the water environment was also found in the Vistula Spit area. It was caused by pollutions from tourist facilities.
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On Accelerated Metaheuristic-Based Electromagnetic-Driven Design Optimization of Antenna Structures Using Response Features
- Sławomir Kozieł
- Anna Pietrenko-Dąbrowska
- Bogdan Pankiewicz
Development of present-day antenna systems is an intricate and multi-step process requiring, among others, meticulous tuning of designable (mainly geometry) parameters. Concerning the latter, the most reliable approach is rigorous numerical optimization, which tends to be re-source-intensive in terms of computing due to involving full-wave electromagnetic (EM) simu-lations. The cost-related issues are particularly pronounced whenever global optimization is necessary, typically carried out using nature-inspired algorithms. Although capable of escaping from local optima, population-based algorithms exhibit poor computational efficiency, to the extent of being hardly feasible when directly handling EM simulation models. A popular miti-gation approach provides the involvement of surrogate modeling techniques, facilitating the search process by replacing costly EM analyses with a fast metamodel. Yet, surrogate-assisted procedures feature complex implementations, and their range of applicability is limited in terms of design space dimensionality that can be efficiently handled. Rendering reliable surrogates is additionally encumbered by highly nonlinear antenna characteristics. This paper investigates potential benefits of employing problem-relevant knowledge in the form of response features into nature-inspired antenna optimization. As demonstrated in the recent literature, re-formulating the design task with the use of appropriately selected characteristics locations of the antenna responses permits flattening the functional landscape of the objective function lead-ing to faster convergence of optimization procedures. Here, we apply this concept to na-ture-inspired global optimization of multi-band antenna structures, and demonstrate its rele-vance, both in terms of accelerating the search process but also improving its reliability. The advantages of feature-based nature-inspired optimization are corroborated through comprehen-sive (based on three antenna structures) comparisons with population-based search involving conventional (e.g., minimax) design problem formulation.
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On effective surface elastic moduli for microstructured strongly anisotropic coatings
- Victor Eremeev
- Giuseppe Rosi
- Salah Naili
The determination of surface elastic moduli is discussed in the context of a recently proposed strongly anisotropic surface elasticity model. The aim of the model was to describe deformations of solids with thin elastic coatings associated with so-called hyperbolic metasurfaces. These metasurfaces can exhibit a quite unusual behaviour and concurrently a very promising wave propagation behaviour. In the model of strongly anisotropic surface elasticity, strain energy as a function of the first and second deformation gradients has been introduced in addition to the constitutive relations in the bulk. In order to obtain values of surface elastic moduli, we compare dispersion relations for anti-plane surface waves obtained using the two-dimensional (2D) model and three-dimensional (3D) straightforward calculations for microstructured coatings of finite thickness. We show that with derived effective surface moduli, the 2D model can correctly describe the wave propagation.