Wyniki wyszukiwania dla: geometry

• Molecular geometry of hexachlorobenzene

  Dane Badawcze

  open access

  • T. Kilich
  • M. Łabuda

  Presented data shows molecular geometry of the ground singlet state of hexachlorobenzene and hexachlorobenzene with potassium atom in 10 angstrom distance. The geometry was obtained via MP2 and CCSD calculations using balanced polarized triple-zeta def2-TZVP basis set. Geometry is provided in the XYZ file format.

• A Method and Device for 3D Recognition of Cutting Edge Micro Geometry

  Publikacja

  • B. Pałubicki
  • M. Szulc
  • J. Sandak
  • G. Sinn
  • K. Orłowski

  - Drvna Industrija - Rok 2014

  A very useful method was successfully applied in the investigation of tools for machining wood and wood based composites. It allows scanning of the cutting edge micro geometry in three dimensions and reproducing it in a virtual space as a 3D surface. The application of the method opens new possibilities of studying tool wear by scanning, including the calculation of volume loss and other analysis of tool wedge geometry along and...

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• Optimalization of TiO2 nanotube geometry using fuzzy reasoning approach

  Publikacja

  • S. Sobieszczyk

  - Engineering of Biomaterials / Inżynieria Biomateriałów - Rok 2009

  The geometry of TiO2 nanotube layer on titanium, obtained by electrochemical anodization, has been determined by using fuzzy reasoning approach. A proposed method showed the possibility of nanotube array architecture optimization by choosing an appropriate anodization condition. A fuzzy logic controller (FLC) was utilized using Matlab Software.

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• Descriptive geometry tasks with computer aided design for geodesy and cartography

  Publikacja

  • B. Kotarska-Lewandowska

  - The Journal of Polish Society for Geometry and Engineering Graphics - Rok 2010

  Zasady rzutowania topograficznego i środkowego stanowią teoretyczną podstawę dla kluczowych przedmiotów zawodowych na kierunku Geodezja i Kartografia, dlatego dobór zarówno treści nauczania jak i konkretnych zadań ćwiczeniowo-projektowych w ramach geometrii wykreślnej jest szczególnie istotny. W artykule na przykładzie tematów zadań rysunkowych omówiono zakres tematyczny z perspektywy dla danego kierunku studiów oraz sposoby jego...

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• On geometry parameterization for simulation-driven design closure of antenna structures

  Publikacja

  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - Scientific Reports - Rok 2021

  Full-wave electromagnetic (EM) simulation tools have become ubiquitous in antenna design, especially final tuning of geometry parameters. From the reliability standpoint, the recommended realization of EM-driven design is through rigorous numerical optimization. It is a challenging endeavor with the major issues related to the high computational cost of the process, but also the necessity of handling several objectives and constraints...

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• Optimization of the geometry of the crankshaft for an internal combustion engine with heat regeneration

  Publikacja

  • D. Cuper-Przybylska
  • M. Łutowicz

  - Combustion Engines - Rok 2011

• A Method and Device for 3D Recognition of Cutting Edge Micro Geometry

  Publikacja

  • B. Palubicki
  • M. Szulc
  • J. Sandak
  • G. Sinn
  • K. Orlowski

  - Drvna Industrija - Rok 2014

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• Examination of tools of different materials edge geometry for MDF milling

  Publikacja

  • G. Kowaluk
  • W. Szymanski
  • B. Palubicki
  • P. Beer

  - European Journal of Wood and Wood Products (HOLZ ALS ROH-UND WERKSTOFF) - Rok 2009

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• Modeling Reservoir Gas Permeability Tests for Cylindrical and Spherical Geometry

  Publikacja

  • M. Kaczmarek

  - TRANSPORT IN POROUS MEDIA - Rok 2010

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• The Study of Geometry of the Selected Transition Curves in the Design of Circular Roads

  Publikacja

  • A. Basak

  - Advances in Science and Technology Research Journal - Rok 2022

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• Search for optimum geometry of selected steel sandwich panel joints

  Publikacja

  • K. Niklas

  - Polish Maritime Research - Rok 2008

  Zastosowanie stalowych paneli typu sandwich w konstrukcjach okrętowych wymaga rozwiązania wielu problemów. Jednymi z trudniejszych zagadnień związanych z tymi nowymi strukturami są połączenia pomiędzy panelami oraz między panelami i konstrukcją innego typu. Artykuł przedstawia poszukiwanie optymalnej geometrii połączenia typu panel-panel w układzie wzdłużnym, przy użyciu parametrycznego modelu w programie ANSYS. Poszukiwano konfiguracji...

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• Critical conditions of hydrogen-air detonation in partially confined geometry

  Publikacja

  • W. Rudy
  • M. Kuznetsov
  • R. Porowski
  • A. Teodorczyk
  • J. Grune
  • K. Sempert

  - PROCEEDINGS OF THE COMBUSTION INSTITUTE - Rok 2013

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• Determination of geometry and positions of circular saw teeth with pinpoint accuracy.

  Publikacja

  • K. Orłowski
  • R. Wasielewski

  - Rok 2005

  Efekty ekonomiczne procesu przecinania sa współzależne z dokładnością użytego narzędzia szczególnie gdy ma sie do czynienia z cięciem piłą tarczową posiadajacą małe wartości rzazu. W tym przypadku wszelkie niedokładności geometrii ostrza w płaszczyznach natarcia i przyłożenia powinny być określone już na etapie wytwarzania pił. Dotyczy to również położenia ostrzy w kierunkach osiowym i promieniowym piły. Te wszystkie wspomiane...

• Molecular geometry of phenylboronic acid

  Dane Badawcze

  open access

  • T. Kilich
  • M. Łabuda

  Data presents molecular geometry of the ground singlet state of phenylboronic acid. The geometry was obtained via DFT calculations using Becke–Lee–Yang–Parr density functional (B3LYP) with the balanced polarized triple-zeta def2-TZVP basis set. Geometry is provided in the XYZ file format.

• Geometry Parametric Model Order Reduction with Randomly Generated Projection Bases

  Publikacja

  • V. D. L. Rubia
  • A. Lamęcki
  • M. Mrozowski

  - Rok 2016

  In this work, a reduced-order model for geometry parameters and fast frequency sweep is proposed. The Finite Element Method is used to solve time-harmonic Maxwell’s equations. Taking into account the electromagnetic field does not arbitrarily vary as a function of frequency and geometry parameters, a low dimension system manifold is identified. Thus, the original Finite Element problem can be approximated by a model of reduced...

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• Computer-aided evaluation of the railway track geometry on the basis of satellite measurements

  Publikacja

  • C. Specht
  • W. Koc
  • P. Chrostowski

  - Open Engineering - Rok 2016

  In recent years, all over the world there has been a period of intensive development of GNSS (Global Navigation Satellite Systems) measurement techniques and their extension for the purpose of their applications in the field of surveying and navigation. Moreover, in many countries a rising trend in the development of rail transportation systems has been noticed. In this paper, a method of railway track geometry assessment based...

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• Influence of Gaps’ Geometry Change on Leakage Flow in Axial Piston Pumps

  Publikacja

  • P. Patrosz

  - Rok 2021

  Axial piston pumps are the core elements of most medium and high-pressure hydraulic systems. High volumetric efficiency and high working pressures are the main advantages of this type of pumps. Therefore it is necessary to accurately calculate the leakage flow through the gaps to design efficient high-pressure pump. The main difficulty of such calculations is the fact, that the gaps change their geometry during pumping process....

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• Fast geometry scaling of miniaturized microwave couplers with power split correction

  Publikacja

  • S. Kozieł
  • A. Bekasiewicz

  - INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING - Rok 2019

  Redesigning a microwave circuit for various operating conditions is a practically important yet challenging problem. The purpose of this article is development and presentation of a technique for fast geometry scaling of miniaturized microwave couplers with respect to operating frequency. Our approach exploits an inverse surrogate model constructed using several reference designs that are optimized for a set of operating frequencies...

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• Impact of rotor geometry optimization on the off-design ORC turbine performance

  Publikacja

  • Ł. Witanowski
  • P. Klonowicz
  • P. Lampart
  • P. Klimaszewski
  • T. Suchocki
  • Ł. Jędrzejewski
  • D. Zaniewski
  • P. Ziółkowski

  - ENERGY - Rok 2023

  The paper describes the method of CFD based Nelder-Mead optimization of a 10 kW single-stage axial turbine operating in an ORC system working on R7100. The total-to-static isentropic efficiency is defined as an objective function. Multi-point linear regression is carried out to determine the significance of the objective function arguments and to pick up the set of particular variables and characteristic quantities (e.g. flow angles)...

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• Experimental and numerical study on stability loss of innovative geometry steel girder

  Publikacja

  • M. Gordziej-Zagórowska
  • W. Migda
  • N. Lasowicz
  • P. Deniziak
  • A. Bera
  • J. Kowalski

  - JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH - Rok 2024

  This paper presents the experimental and numerical analysis of an innovative plate girder geometry with variable web thicknesses. An idea proposed in this research is to increase the stability of the girder web by increasing its thickness in the compressed zone. This solution can replace commonly used longitudinal stiffeners which are designed to prevent web local loss of stability. Moreover, such an innovative approach requires...

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• Preparatory Railway Track Geometry Estimation Based on GNSS and IMU Systems

  Publikacja

  • S. Judek
  • A. Wilk
  • W. Koc
  • L. Lewiński
  • A. Szumisz
  • P. Chrostowski
  • S. Grulkowski
  • J. Szmagliński
  • M. Michna
  • K. Karwowski... i 2 innych

  - Remote Sensing - Rok 2022

  The article discusses an important issue of railway line construction and maintenance, which fundamentally is the verification of geometric parameters of the railway track. For this purpose, mobile measurements have been performed using a measuring platform with two properly arranged GNSS receivers, which made it possible to determine the base vector of the platform. The measuring functionality of the system was extended by IMU....

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• Optimized Stress and Geometry Control of Spherical structures under Lateral Loadings

  Publikacja

  • A. Mahmood
  • J. Katebi
  • N. Saeed
  • A. Manguri

  - Rok 2022

  In this paper, a numerical model of a double-layer spherical structure has been examined under lateral loadings. When the structure has been distorted due to loadings, the dislocated joints have been moved to their original positions utilizing the adjustment techniques based on the force method. Meanwhile, the members’ internal forces were kept in the desired domain. Optimization techniques were also implemented in order to minimalize...

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• Electrostatic Zipping Actuators—Analysis of the Pull-In Effect Depending on the Geometry Parameters

  Publikacja

  • J. Szkopek
  • G. Redlarski
  • A. Żak

  - ENERGIES - Rok 2021

  Continuous work on a new generation of actuators, referred to as artificial muscles, resulted in the initiation of work on electrostatic zipping actuators, the concept of which is derived from micro electro-mechanical devices. Despite partial knowledge of their basic operating parameters, a question remains whether electrostatic zipping actuators are able to meet the expectations in the context of generated forces and control possibilities....

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• Divination from chips: monitoring of the sawing process with chip geometry analyzes

  Publikacja

  • J. Sandak
  • K. Orłowski
  • M. Negri

  - Rok 2006

  Wióry (trociny) są niechcianym produktem towarzyszącym procesowi przecinania. Jednakże, niosą one w sobie wiele informacji świadczących o przebiegu procesu obróbki. Metoda oceny składu procentowego wiórów - ich frakcji - jest prosta lecz ma szereg ważnych ograniczeń. W pracy zaprezentowano nowy alternatywny sposób pomiaru geometrii wiórów. Przedstawiono wyniki dla skrawania drewna mrożonego i nie mrożonego. Wyniki uzyskane ta metodą...

• Influence of ducting geometry on working parameters of pipe type hydraulic turbines

  Publikacja

  • J. Iwan

  - Rok 2010

  Mała energetyka wodna. Omówiono własności użytkowe - głównie, sprawność i adaptacyjność - uzyskiwane poprzez rozwiązania układów turbinowych stosowanych w obszarze zagospodarowywania piętrzeń niskospadowych. Wskazano przyczyny od których te własności zależą. Pokazano też przykład rozwiązania o pożądanych własnościach dla zagospodarowywania obiektów w mało atrakcyjnym ekonomicznie obszarze piętrzeń najniższych.

• High accuracy multisensor hydroacoustic system for models of trawl geometry measurements

  Publikacja

  • J. Marszal

  - Rok 2008

  W pracy przedstawiono wieloelementowy hydroakustyczny system do pomiaru modeli włoków. System został zaprojektowany dla Akademii Rolniczej w Szczecinie i umożliwia precyzyjny pomiar geometrii projektowanych tam narzędzi połowowych w tym selektywnych worków dorszowych. Zastosowanie małych hydrofonów o wysokiej częstotliwości pracy oraz cyfrowego przetwarzania sygnałów z analizą korelacyjną umożliwiło uzyskanie bardzo dużej dokładności...

• Neural Network Application for Recognition of Geometry Degradation of Power Cycle Components

  Publikacja

  • J. Głuch

  - Rok 2003

  Przedyskutowano problem rozpoznawania degradacji geometrycznej. Skuteczne zastosowanie wybranego typu sieci neuronowej (SSN) jest prezentowane w referacie. SSN wykrywająca typy degradacji geometrycznej wykazała wysoką jakość. Pokazano pewną możliwość ekstrapolacji takich SSN. Pokazano możliwość wykrywania typów degradacji geometrycznej nawet w przypadku pozyskiwania niepełnych danych pomiarowych.

• DIFFERENTIAL GEOMETRY AND ITS APPLICATIONS

  Czasopisma

  ISSN: 0926-2245 , eISSN: 1872-6984

• International Electronic Journal of Geometry

  Czasopisma

  ISSN: 1307-5624

• Journal of Geometry and Symmetry in Physics

  Czasopisma

  ISSN: 1312-5192 , eISSN: 1314-5673

• Analysis and Geometry in Metric Spaces

  Czasopisma

  ISSN: 2299-3274

• Eurographics Symposium on Geometry Processing

  Czasopisma

  ISSN: 1727-8384

• Proceedings of the International Geometry Center

  Czasopisma

  ISSN: 2072-9812 , eISSN: 2409-8906

• ANNALS OF GLOBAL ANALYSIS AND GEOMETRY

  Czasopisma

  ISSN: 0232-704X , eISSN: 1572-9060

• Descriptive geometry

  Kursy Online

  • A. Wancław

• Inverse surrogate models for fast geometry scaling of miniaturized dual-band couplers

  Publikacja

  • S. Kozieł
  • A. Bekasiewicz

  - Rok 2016

  Re-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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• Expedited Geometry Scaling of Compact Microwave Passives by Means of Inverse Surrogate Modeling

  Publikacja

  • S. Kozieł
  • A. Bekasiewicz

  - IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES - Rok 2015

  In this paper, the problem of geometry scaling of compact microwave structures is investigated. As opposed to conventional structures (i.e., constructed using uniform transmission lines), re-design of miniaturized circuits (e.g., implemented with artificial transmission lines, ATSs) for different operating frequencies is far from being straightforward due to considerable cross-couplings between the circuit components. Here, we...

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• Geometry optimization of steroid sulfatase inhibitors - the influence on the free binding energy with STS

  Publikacja

  • K. Jagiełło
  • A. Sosnowska
  • K. Supratik
  • S. Demkowicz
  • M. Daśko
  • J. Leszczyński
  • J. Rachoń
  • T. Puzyn
  • K. Jagiello

  - STRUCTURAL CHEMISTRY - Rok 2017

  In the paper we review the application of two techniques (molecular mechanics and quantum mechanics) to study the influence of geometry optimization of the steroid sulfatase inhibitors on the values of descriptors coded their chemical structure and their free binding energy with the STS protein. We selected 22 STS-inhibitors and compared their structures optimized with MM+, PM7 and DFT B3LYP/6–31++G* approaches considering separately...

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• Inverse surrogate modeling for low-cost geometry scaling of microwave and antenna structures

  Publikacja

  • S. Kozieł
  • A. Bekasiewicz

  - ENGINEERING COMPUTATIONS - Rok 2016

  Purpose–The purpose of this paper is to investigate strategies for expedited dimension scaling ofelectromagnetic (EM)-simulated microwave and antenna structures, exploiting the concept of variable-fidelity inverse surrogate modeling.Design/methodology/approach–A fast inverse surrogate modeling technique is described fordimension scaling of microwave and antenna structures. The model is established using referencedesigns obtained...

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• A SEARCH OF AN INDUCER GEOMETRY THAT IS BENEFICIAL FOR LIFTING PARAMETERS OF A LIFTED OBJECT OF A SELECTED SHAPE

  Publikacja

  • B. Bastian
  • R. Gawarkiewicz

  - TRIBOLOGIA - Rok 2019

  The literature describes acoustic levitation phenomena with the utilization of air squeeze film between the vibrating inducer and the lifted object. The objective of the study is to determine the shape of the inducer with vibration characteristics that would allow the levitation of an object of the assumed geometry. In this paper, the influence of the dimension ratio of the inducer on the frequency of the first mode of vibration...

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• THE METHOD OF MEASURING THE MEMBRANE COVER GEOMETRY USING LASER SCANNING AND SYNCHRONOUS PHOTOGRAMMETRY

  Publikacja

  • A. Janowski
  • W. Kamiński
  • K. Makowska-Jarosik
  • J. Szulwic
  • K. Wilde

  - Rok 2015

  The authors present the experience and results of field studies carried out at the technical acceptance of Forest Opera (name in Polish: Opera Leśna) in Sopot (Poland). An unusual design of covering made in the form of “Sheerfill I” technical fabric membrane required spanned in the form of sails, required the use of terrestrial laser scanning. Such approach allowed for the fast and accurate record of the surface of individual panels...

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• Radial and angular correlations in a confined system of two atoms in two-dimensional geometry

  Publikacja

  • P. Kościk

  - Quantum Information Processing - Rok 2024

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• Extended internal geometry description in modelling of dynamics of fluid-filled permeable media

  Publikacja

  • M. Kaczmarek

  - TRANSPORT IN POROUS MEDIA - Rok 1992

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• Influence of geometry and annealing temperature in argon atmosphere of TiO2 nanotubes on their electrochemical properties

  Publikacja

  • M. Nycz
  • E. Paradowska
  • K. Arkusz
  • D. Pijanowska

  - Acta of Bioengineering and Biomechanics - Rok 2020

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• Extended duration running and impulse loading characteristics of an acoustic bearing with enhanced geometry

  Publikacja

  • T. Stolarski
  • R. Gawarkiewicz
  • K. Tesch

  - TRIBOLOGY LETTERS - Rok 2017

  This paper presents performance during prolonged running of the acoustic bearing when PZTs are switched off and when they are switched on. The effect of active PZT on shaft’s displacements in X and Y directions is clearly demonstrated. Performance of the acoustic bearing was also assessed when an impulse force was applied to the running shaft at speed. Once again the benefits of having PZTs active are beyond doubt. The instability...

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• The In-House Method of Manufacturing a Low-Cost Heat Pipe with Specified Thermophysical Properties and Geometry

  Publikacja

  • M. Rogowski
  • M. Fabrykiewicz
  • P. Szymański
  • R. Andrzejczyk

  - Applied Sciences-Basel - Rok 2023

  Various types of heat pipes are available to purchase off the shelf, from various manufacturers, but most of them have strictly defined geometry and technical parameters. However, when there is a need to use a heat pipe (HP) with an unusual size and shape or working conditions other than the standard ones, it becomes very costly to order them from manufacturers, especially in small quantities, and only a few producers are willing...

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• Resonance microstrip structure with patch of arbitrary convex geometry with the use of field matching technique

  Publikacja

  • R. Lech

  - JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS - Rok 2018

  An analysis of the resonance frequency problem of planar microstrip structure with patch of arbitrary convex geometry is presented. A full-wave analysis is employed utilizing a combination of Galerkin’s moment method and field matching technique. In this approach, a field matching technique is adopted to calculate the patch surface current densities, and next the method of moments is utilized to calculate resonance frequencies...

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• The geometry of free-standing titania nanotubes as a critical factor controlling their optical and photoelectrochemical performance

  Publikacja

  • J. Wawrzyniak
  • K. Grochowska
  • J. Karczewski
  • P. Kupracz
  • J. Ryl
  • A. Dołęga
  • S. Katarzyna

  - SURFACE & COATINGS TECHNOLOGY - Rok 2020

  Titanium dioxide nanotubes are regarded as one of the most important functional materials and due to their unique electronic properties, chemical stability and photocorrosion resistance, they find applications in, for example, highly efficient photocatalysis or perovskite solar cells. Nevertheless, modification of TiO2 nanotubes is required to overcome their main drawback, i.e. large energy bandgap (>3.2 eV) limiting their ability...

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• Universality of Internal Correlations of Strongly Interacting p -Wave Fermions in One-Dimensional Geometry

  Publikacja

  • P. Kościk
  • T. Sowiński

  - PHYSICAL REVIEW LETTERS - Rok 2023

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• Tuning the Wettability of a Thin Polymer Film by Gradually Changing the Geometry of Nanoscale Pore Edges

  Publikacja

  • M. Łojkowski
  • S. Walheim
  • P. Jokubauskas
  • T. Schimmel
  • W. Święszkowski

  - LANGMUIR - Rok 2019

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