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Wyniki wyszukiwania dla: BUILT-UP CROSS SECTION
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TEM imaging of metal nanoparticle cross section
Dane BadawczeTEM microscope was used for a imaging of metallic nanostructures. Metallic nanostructures were manufactured by thermal annealing of thin films. Gold and silver nanostructures were chosen for measurements. Samples were annealed for 15 and 60 minutes at 550 deg.
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A novel section–section potential for short-range interactions between plane beams
PublikacjaWe derive a novel formulation for the interaction potential between deformable fibers due to short-range fields arising from intermolecular forces. The formulation improves the existing section–section interaction potential law for in-plane beams by considering an offset between interacting cross sections. The new law is asymptotically consistent, which is particularly beneficial for computationally demanding scenarios involving...
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Impact of cross-section centers estimation on the accuracy of the Point cloud spatial expansion using robust M-estimation and Monte Carlo simulation
PublikacjaThe point cloud spatial expansion (PCSE) method creates an alternative form of representing the shape of symmetrical objects and introduces additional descriptive geometric parameters. An important element of the procedure is determining the course of the axis of symmetry of cylindrical objects based on cross-sections of point clouds. Outliers occurring in laser measurements are of great importance in this case. In this study,...
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A Fast Method of Separation of the Noisy Background from the Head-Cross Section in the Sequence of MRI Scans
PublikacjaThe paper presents a new method of removing the noisy background from the sequence of magnetic resonance imaging (MRl) scans. The sequence of scans is required in order to monitor a passage of a contrast agent through the brain tissue. The scans contain the noisy head-cross data and also the noisy background data. The latter has to be removed and excluded from a further analysis. It is achieved by applying some basic morphological...
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Isomer effects on the total cross section for electron scattering from C4F6molecules.
PublikacjaZmierzono całkowity przekrój czynny (TCS) na rozpraszanie elektronów na drobinach 1,3-C4F6. Pomiary przeprowadzono w zakresie energii elektronu od 0,6do 370 eV. Wyniki porównano z TCS otrzymanym poprzednio dla 2-C4F6. Stwierdzono wpływ różnic strukturalnych na otrzymane energetyczne zależności TCS (tzw. efekt izomeryczny).
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Cross section calculations for electron scattering from DNA and RNA bases.
PublikacjaPoliczono różniczkowy i scałkowany przekrój czynny na rozproszenie sprężyste elektronów (w przybliżeniu atomów niezależnych) na uracylu, cytozynie, guaninie, adeninie i tyminie w zakresie energii od 50-4000 eV. W przybliżeniu modelu BEB policzono również przekroje czynne na jonizację tych molekuł.
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High Frequency Proximity Losses Determination for Rectangular Cross Section Conductors
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Minimization of Eddy Current Losses in a Straight Rectangular Cross Section Conductor
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High-Frequency Proximity Losses Determination for Rectangular Cross-Section Conductors
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Idiosyncratic risk and cross-section of stock returns in emerging European markets
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Idiosyncratic volatility and the cross-section of anomaly returns: is risk your Ally?
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Is tail risk priced in the cross-section of Chinese mutual fund returns?
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Salience theory and the cross-section of stock returns: International and further evidence
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The cross-section of returns in frontier equity markets: Integrated or segmented pricing?
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Electron scattering from hexafluoroacetone molecules: cross section measurements and calculations
PublikacjaZmierzono absolutne całkowite przekroje czynne na zderzenie elektronów z drobinami hexafluoroacetonu (HFA). Pomiary przeprowadzono dla energii zderzenia od 1 do 400 eV. Zależność energetyczna przekroju czynnego wykazała obecność struktur związanych z procesami o charakterze rezonansowym. Wykonano obliczenia sprężystego i jonizacyjnego przekroju czynnego dla drobin HFA i acetonu. Suma obliczonych przekrojów wykazuje dużą zgodność...
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APPLICATION OF BINARY-ENCOUNTER-BETHE METHOD TO ELECTRON-IMPACT IONIZATION CROSS SECTION CALCULATIONS FOR BIOLOGICALLY RELEVANT MOLECULES
PublikacjaElectron-impact cross sections for platinum chemotherapeutic compounds, purine and pyrimidine molecules calculated using binary-encounterBethe model are presented as examples of possible applications of that method.
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Comparative tests of the wall thickness effect of a glass-reinforced thermosetting plastic coating with a non-circular cross section in a soil-coating object for economic aspect
PublikacjaCulvert structures made of plastics are employed extensively in the construction of new facilities as well as the renovation of existing ones. Due to the high costs of materials required for the manufacturing of these goods, the objective of this research is focused to lessen the thickness of the walls, which may, on the other hand, result in a reduction in the stiffness of the system. In the course of the testing, the structure...
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Stability of an Innovative Cold-Formed GEB Section
PublikacjaThis paper is focused on the numerical analysis and experimental test of stability of the cold-formed profile with an innovative GEB cross-section. For the shell model of the axially compressed member, the linear buckling analysis and the nonlinear static analysis were carried out. In the numerical research, the buckling load and the limit load for variable section heights were obtained. Some of the results were compared with the...
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Survey for newly built sport facilities
PublikacjaThe article presents selected surveying and construction problem on two newly built sports facilities in Gdańsk. The papers contains selected results of surveying.
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Innovative cold-formed GEB section under compression
PublikacjaCold-formed steel sections extensively affect the modern steel construction industry. Not only are they used as secondary elements like purlins or sheeting, but also they can serve as primary load-bearing members in fabricated steel panels and trusses. A new cross-section called shortly a GEB may serve as that member. However, its existence of the metal building structures industry depends on the exact, optimal dimensional parameters...
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Total cross-section measurements for electron collision with α-tetrahydrofurfuryl alcohol (C5H10O2)
PublikacjaPrzedstawiono całkowite przekroje czynne (TCS) na rozpraszanie elektronów na drobinach α-tetrahydrofurfurylu, zmierzone w zakresie energii zderzenia 1-370 eV oraz policzone powyżej 50 eV. Przedyskutowano otrzymaną zależność TCS od energii. Wyniki porównano z dostępnymi teoretycznymi i eksperymentalnymi przekrojami czynnymi.
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Macroeconomics matter: Leading economic indicators and the cross-section of global stock returns
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Who should be afraid of infections? Pandemic exposure and the cross-section of stock returns
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Beware of the crash risk: Tail beta and the cross-section of stock returns in China
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Decomposing the earnings-to-price ratio and the cross-section of international equity-index returns
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Static analysis of grids assembled with thin-walled beams of the open cross-section
PublikacjaPraca dotyczny analizy statycznej rusztów zbudowanych z prętów cienkościennych. Przedstawiono w niej koncepcję metody modelowania konstrukcji dźwigarów cienkościennych i rusztów z wykorzystaniem superelementów w połączeniu z klasyczną teorią belek cienkościennych o przekroju nieodkształcalnym. Zamieszczono wyniki przeprowadzonej eksperymentalnej weryfikacji badań teoretycznych.
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Selected problems of stability of thin-walled columns with bisymmetric open cross-section
PublikacjaPraca dotyczy problemów stateczności osiowo ściskanych prętów o bisymetrycznym przekroju otwartym. Badano wpływ nieliniowości materiału pręta oraz wstępnego zakrzywienia osi na wyboczenie skrętne oraz początkową ścieżkę pokrytyczną. Na przykładach numerycznych wykazano, że w pewnych przypadkach stateczny, symetryczny punkt może zmienić się na symetryczny ale niestateczny, co oznacza możliwość redukcji siły krytycznej.
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Total electron-scattering cross section measurements for tetrahydropyran, (CH2)5O, molecules
PublikacjaZmierzono całkowity przekrój czynny (TCS) na rozproszenie elektronów na drobinach tetrahydropyranu. Pomiary przeprowadzono metodą transmisyjną w zakresie energii zderzenia 1 - 400 eV. Otrzymana zależność energetyczna TCS wskazuje na obecność procesów rezonansowych w zakresie 3 - 15 eV. Wyniki porównano z całkowitymi przekrojami czynnymi dla drobin tetrahydrofuranu i alkoholu alfa-tetrahydrofurfurylowego.
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Application of time-series-cross-section data in case of sale forecasting in an enterprise
PublikacjaW artykule wskazano możliwości wykorzystania danych przestrzenno-czasowych do prognozowania sprzedaży w przedsiębiorstwie. Przedstawiono różne podejścia do prognozowania ekonometrycznego przy użyciu tego typu danych. Wyznaczono krótkookresowe prognozy sprzedaży benzyny bezołowiowej Pb95 w przekroju województw oraz dokonano oceny ich jakości przy użyciu mierników ex-post. Dwie najdokładniejsze metody prognozowania wykorzystano do...
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Cross section calculations for electron impact ionization and elastic scattering from cisplatin
PublikacjaCałkowity przekrój czynny na jednokrotną jonizację cisplatyny (H6N2Cl2Pt) w zderzeniach z elektronami został obliczony przy wykorzystaniu modelu BEB (binary-encounter-Bethe) dla energii zderzenia od progu na jonizację do 5 keV. W celu uzyskania danych niezbędnych w modelu BEB, geometryczna i elektronowa struktura cisplatyny została przebadana metodami chemii kwantowej. Obliczono również przekrój czynny na sprężyste rozproszenie...
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Dynamic control of the receiving beam horizontal cross-section in the side scan sonar
PublikacjaW skonstruowanych przed kilkunastu laty a obecnie modernizowanych sonarach bocznych jako jeden z zabiegów modernizacyjnych wprowadzono dynamiczną regulację kąta rozwarcia odbiorczej charakterystyki kierunkowej w przekroju horyzontalnym. Regulacja taka zapewnia quasi-stałą rozdzielczość liniową sonaru (zamiast stałej rozdzielczości kątowej) przy odbiorze sygnałów echa ze wzrastających odległości od wykrywanych celów. W efekcie tego...
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Calculations of Cross-Sections for Positron Scattering on Benzene
PublikacjaIn this work, we present a theoretical study on positron scattering by benzene molecules over a broad energy range (1–1000 eV). The aim of this work is to provide missing data from partial cross-sections for specific processes. In particular, calculations of cross-sections for direct ionization and electronic excitation were carried out for benzene molecules in the gas phase. An estimate for the cross-section for positronium formation...
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Ultrasonic wave propagation and digital image correlation measurements of steel bars under 3-point bending
Dane BadawczeThe DataSet contains the results of the mechanical behaviour of a bar under a 3-point bending test. The bar was made of steel and had a cross-section of 5.96 × 5.96 mm2 and a length of 200 mm. The three-point bending test was performed using a Zwick/Roell Z10 universal testing machine (UTM), with a distance between supports of 12 cm. The parameters...
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Measurement of the tram rail profile during a year of operation - supplementary data
Dane BadawczeThe aim of the work was to analyze the wear of rails during operation and to analyze the supplementation of heavy metals in the soil around the tram route, originating from wearing out rails and tram wheels.The dataset contains measurements of rail head coordinates in 9 research sections made in 8 measurement series. The wear of the rails in selected...
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DEPO: A dynamic energy‐performance optimizer tool for automatic power capping for energy efficient high‐performance computing
PublikacjaIn the article we propose an automatic power capping software tool DEPO that allows one to perform runtime optimization of performance and energy related metrics. For an assumed application model with an initialization phase followed by a running phase with uniform compute and memory intensity, the tool performs automatic tuning engaging one of the two exploration algorithms—linear search (LS) and golden section search (GSS), finds...
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Scattering From a Cylindrical Object of Arbitrary Cross Section With the Use of Field Matching Method
PublikacjaA simple and intuitive solution to scattering problems in shielded and open structures is presented. The main idea of the analysis is based on the direct field matching technique involving the usage of projection of the fields at the boundary on a fixed set of orthogonal basis functions. Different convex shapes and various obstacle materials are considered to verify the validity of the method in open and closed structures. The...
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Selection of the cross-section area shape of the ducts used in the shelter ventilation systems – analysis
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Calculations of electron impact ionization cross section for simple biomolecules: formic and acetic acids
PublikacjaObliczono przekroje czynne na jednokrotną jonizację kwasu mrówkowego oraz kwasu octowego. Obliczenia przeprowadzono używając formalizmu BEB w zakresie energii od progu na jonizację do 400 eV. Wyniki porównano z dostępnymi danymi doświadczalnymi.
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Board cross-section errors while sawing on twin shaft multi-rip saws
PublikacjaW pracy przedstawiono wpływ warunków pracy pił na powstawanie błędów przecinania w postaci uskoku na przekroju poprzecznym tarcicy.
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ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE
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Electron collisions with methyl-substituted ethylenes: Cross section measurements and calculations for 2-methyl–2-butene and 2,3-dimethyl–2-butene
PublikacjaWe report electron-scattering cross sections determined for 2-methyl–2-butene [(H3C)HC==C(CH3)2] and 2,3-dimethyl–2-butene [(H3C)2C=C(CH3)2] molecules. Absolute grand-total cross sections (TCSs) were measured for incident electron energies in the 0.5–300 eV range, using a linear electron-transmission technique. The experimental TCS energy dependences for the both targets appear to be very similar with respect to the shape. In each...
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Runner bean (Phaseolus coccineus) histological cross section observations of stems, leaves, and roots using light microscope
Dane BadawczeThis data set contains images of root crown, root, stem, and leaf cross-sections of runner bean (Phaseolus coccineus). Runner bean seedlings (3-5 cm) were planted on soil amended with poultry (chicken) manure biochars pyrolized at various temperatures (400, 500, and 600 C degrees). Three different poultry manure biochar materials (450, 500, and 600°C)...
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As- built inventory of the office building with the use of terrestrial laser scanning
PublikacjaTerrestrial Laser Scanning (TLS) is an efficient tool for building inventories. Based on the red- laser beam technology it is possible to provide the high accuracy data with complete spatial information about a scanned object. In this article, authors present the solution of use a TLS in as-built inventory of the office building. Based on the provided data, it is possible to evaluate the correctness of built details of a building...
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Impact of maintenance of floodplains of the Vistula River on high water levels on the section from Włocławek to Toruń
PublikacjaThis article describes the methodology of hydraulic calculations to estimate the water levels in open channels for steady gradually varied flow. The presented method has been used to analyse the water level on the Vistula River from Włocławek cross-section to Toruń cross-section. The HEC-RAS modelling system has been used for parameterization of the river channel and floodplains, as well as for flow simulation. The results obtained...
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On the generalized model of shell structures with functional cross-sections
PublikacjaIn the present study, a single general formulation has been presented for the analysis of various shell-shaped structures. The proposed model is comprehensive and a variety of theories can be used based on it. The cross-section of the shell structure can be arbitrarily analyzed with the presented equations. In other words, various types of shell structures, including cylindrical, conical, spherical, elliptical, hyperbolic, parabolic,...
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Electromagnetic plane wave scattering from a cylindrical object with an arbitrary cross section using a hybrid technique
PublikacjaA hybrid technique combining finite-element and mode-matching methods for the analysis of scattering problems in open and closed areas is presented. The main idea of the analysis is based on the utilization of the finite-element method to calculate the post impedance matrix and combine it with external excitation. The discrete analysis, which is the most time- and memory-consuming, is limited here only to the close proximity of...
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Misery on Main Street, victory on Wall Street: Economic discomfort and the cross-section of global stock returns
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Diagnosing marine turbine engines through energy characteristics of their flow section
PublikacjaThe aim of the performed research was to develop of diagnostic method of the flow section of a marine turbine combustion engine based on the level of delamination of its energy characteristics. The here adopted diagnostic model provides for a formulation of the evaluation of the technical conditions based on the measurements of the parameters of the thermodynamic medium in the characteristic control cross-sections of the engine...
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Numerical analysis on axial capacity of steel built-up battened columns
PublikacjaThis paper deals with the numerical analysis aimed at study the bearing capacity of pinended steel built-up columns under axial compression. Finite element (FE) models were performed for the columns presented in the literature. The main problem discussed in the article is the shape and magnitude of geometric imperfections introduced into the numerical FE model, necessary to obtain the load capacity consistent with the experimental...
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Cross sections calculations for electron scattering from dimethylamine, NH(CH3)2, molecule
PublikacjaThe total cross section for single electron-impact ionization and the integral elastic cross section for electron scattering from dimethylamine have been calculated using the binary-encounter-Bethe model and the independent atom method, respectively.