Search results for: geometry

• Geometry of cycling track

  Publication

  • M. T. Solarczyk

  - Budownictwo i Architektura - Year 2020

  The paper describes the problems related to shaping of the geometry of the cycling track. The method of selection of the angle at the track curve is presented. Issues related to the selection of the appropriate transition curve and the superelevation section along the transition curve are presented. Reference to the recommendations presented in the literature and scientific papers has been made. Special attention...

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• Selection of descriptive geometry textbooks

  Publication

  • B. Kotarska-Lewandowska

  - The Journal of Polish Society for Geometry and Engineering Graphics - Year 2007

  W artykule przedstawiono koncepcję badania podręczników do geometrii wykreślnej bazującą na psycholingwistycznej teorii komunikatu. Zaprezentowane podejście umożliwia analizę podręczników na sześciu poziomach odnoszących się do głównych funkcji komunikacji międzyludzkiej. W artykule skupiono się na postrzeganiu językowej funkcji podręczników geometrii wykreślnej i w tym zakresie stwierdzono wiele cech zbieżnych.

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• Journal of Geometry

  Journals

  ISSN: 0047-2468 , eISSN: 1420-8997

• Algebraic Geometry

  Journals

  ISSN: 2313-1691 , eISSN: 2214-2584

• ADVANCES IN GEOMETRY

  Journals

  ISSN: 1615-715X , eISSN: 1615-7168

• GEOMETRY & TOPOLOGY

  Journals

  ISSN: 1465-3060 , eISSN: 1364-0380

• Information Geometry

  Journals

  ISSN: 2511-2481 , eISSN: 2511-249X

• The Journal of Polish Society for Geometry and Engineering Graphics

  Journals

  ISSN: 1644-9363

• Between Descriptive Geometry and CAD 3D

  Publication

  • B. Kotarska-Lewandowska

  - The Journal of Polish Society for Geometry and Engineering Graphics - Year 2018

  Descriptive geometry provides methods to analyse three-dimensional space through two-dimensional drawings and prepares to create technical documentation. Geometric form of an engineering project is presented by the means of projection methods based on a 3D model, which is present in designer’s imagination. The forthcoming era of Building Information Modelling (BIM) brings changes in the way the engineer works, as the vision is...

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• Preparation of Descriptive Geometry Course in English

  Publication

  • B. Kotarska-Lewandowska

  - The Journal of Polish Society for Geometry and Engineering Graphics - Year 2011

  W artykule przedstawiono wybrane różnice stosowane w zapisie konstrukcji geometrycznych w podręcznikach do geometrii wykreślnej w różnych krajach.

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• Bad geometry effect in TDOA systems

  Publication

  • K. Bronk
  • J. Stefański

  - POLISH JOURNAL OF ENVIRONMENTAL STUDIES - Year 2007

  W artykule przedstawiono wpływ tzw. złej geometrii (ZG) rozmieszczenia stacji bazowych na dokładność estymacji położenia terminala w sieciach komórkowych, wykorzystujących metodę TDOA. Zdefiniowano podstawowe parametry opisujące złą geometrię oraz przedstawiono praktyczne wskazówki jak poprawić dokładnośc estymacji położenia terminala ruchomego w przypadku wystąpienia ZG.

• Impossible objects in geometry and graphic education

  Publication

  • M. Helenowska-Peschke

  - Year 2005

  W artykule przedstawiono propozycję wprowadzenia do programu nauczania z geometrii przestrzennej i grafiki inżynierskiej obiektów niemożliwych (tworzonych między innymi przez M.C. Eschera). Celem analizy fenomenu obiektów niemożliwych w kontekście odwzorowań płaskich obiektów przestrzennych, a także percepcji przestrzeni jest wzbogacenie wyobrażni przestrzennej i kreatywności studentów.

• System for control of the saw tooth geometry.

  Publication

  • R. Wasielewski
  • K. Orłowski

  - Year 2004

  W pracy przedstawiono sposób i urządzenie do sprawdzania geometrii ostrzy pił tarczowych z wykorzystaniem komputerowej rejestracji obrazów ostrzy i ich obróbką cyfrową.

• Chosen Methods Supporting Didacts of Descriptive Geometry

  Publication

  • B. Kotarska-Lewandowska

  - The Journal of Polish Society for Geometry and Engineering Graphics - Year 2013

  The article presents reflections on the practical ways of supporting the teaching processes of descriptive geometry in the context of psychological theories of learning and motivation.

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• Examples of Original Descriptive Geometry Task Items

  Publication

  • B. Kotarska-Lewandowska

  - The Journal of Polish Society for Geometry and Engineering Graphics - Year 2016

  The paper presents several descriptive geometry drawing tasks and a comprehensive approach to their evaluation. The results as the task profile include the most important features and enable interpretation of the tasks in the educational system.

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• Mulimedia manuals for descriptive geometry and engineering graphics

  Publication

  • M. Helenowska-Peschke

  - The Journal of Polish Society for Geometry and Engineering Graphics - Year 2008

  The article discusses issues connected with ICT (Information and Communication Technologies) implementation in Descriptive Geometry and Engineering Graphics Education. The presentation of the issues is supported by the author's multimedia manuals made in Multimedia Flash MX technology and published on the Gdańsk University of Technology net.

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• Rotor Blade Geometry Optimisation in Kaplan Turbine

  Publication

  • M. Banaszek
  • K. Tesch

  - TASK Quarterly - Year 2010

  The paper presents the description of method and results of rotor blade shape optimisation. The rotor blading constitutes a part ofturbine flow path. Optimisation consists in selection of the shape that minimises ratio of polytrophic loss. Shape of the blade isdefined by the mean camber line and thickness of the airfoil. Thickness is distributed around the camber line based on the ratio ofdistribution. Global optimisation was done...

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• Programming Geometry as a Creative Play with Architectural Form

  Publication

  • M. Helenowska-Peschke

  - Czasopismo Techniczne - Year 2015

  In the twenty-first century "programming" is the key word that opens unprecedented opportunities for design and materialization of geometrically complex architectural objects. From the digital designer perspective programming geometry can be seen as a creative play with a form and a process of generation/exploration as well as the possibility of applying the computing power as a co-designer in the process of finding solutions for...

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• The Use of Photographs in the Teaching/Learning of Descriptive Geometry

  Publication

  • B. Kotarska-Lewandowska

  - Year 2014

  The article presents the concept of enriching the Descriptive Geometry course with photographs and several simplified real-life engineering tasks. The photographic images used for the exercises are tightly linked to engineering structures, the given specialization and the surrounding world. The photo image as a record of central projection of a real space can be useful for presentation and analysis of the properties of perspective....

• If Gravity is Geometry, is Dark Energy just Arithmetic?

  Publication

  • M. Czachor

  - INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS - Year 2017

  Arithmetic operations (addition, subtraction, multiplication, division), as well as the calculus they imply, are non-unique. The examples of four-dimensional spaces, R^4 and (−L/2,L/2)^4, are considered where different types of arithmetic and calculus coexist simultaneously. In all the examples there exists a non-Diophantine arithmetic that makes the space globally Minkowskian, and thus the laws of physics are formulated in terms...

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• The influence of contact geometry on friction and wear characteristics

  Publication

  • R. Michalczewski
  • W. Piekoszewski
  • M. Szczerek
  • M. Wiśniewski
  • R. Michalczewski

  - Tribotest - Year 2000

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• Geometry design in rerfractive capillary optical fibers

  Publication

  • R. Romaniuk
  • R. S. Romaniuk

  - Photonics Letters of Poland - Year 2010

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• Chip geometry while sawing frozen wood.

  Publication

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

  - Year 2005

  W pracy przedstawiono analizę geometrii wiórów zebranych podczas przecierania pryzm sosnowych o temperaturach -5 st. C, -20 st. C, + 18 st. C na pilarce ramowej przecieranych za pomocą cienkich pił. Analizowano rozkład wiórów w funkcji ich wymiarów podłużnych oraz pola powierzchni. W badaniach wykorzystywano kamere cyfrową, a obrazy z niej uzyskane obrabiano za pomoca oprogramowania opracowanego w srodowisku LabView. W widmach...

• Simulation of wood structure geometry after machining

  Publication

  • D. Pauliny
  • J. Sandak
  • K. Orłowski
  • R. Wasielewski

  - Annals of WULS, Forestry and Wood Technology - Year 2012

  W niniejszym artykule została przedstawiona nowa metoda trójwymiarowych symulacji geometrii powierzchni drewna. Zaprezentowano wpływ parametrów obróbkowych oraz drgań podczas strugania obrotowego drewna. Chropowatość powierzchni była charakteryzowana poprzez parametry profilu chropowatości Ra oraz Rz. Posuw na ostrze oraz średnica narzędzia są najbardziej wpływającymi czynnikami na wielkość nierówności podczas maszynowej obróbki...

• Pseudopotentials via Moutard Transformations and Differential Geometry

  Publication

  • S. Leble

  - Year 2013

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• DISCRETE & COMPUTATIONAL GEOMETRY

  Journals

  ISSN: 0179-5376 , eISSN: 1432-0444

• COMMUNICATIONS IN ANALYSIS AND GEOMETRY

  Journals

  ISSN: 1019-8385 , eISSN: 1944-9992

• Journal of Fractal Geometry

  Journals

  ISSN: 2308-1309 , eISSN: 2308-1317

• Journal of Computational Geometry

  Journals

  ISSN: 1920-180X

• JOURNAL FOR GEOMETRY AND GRAPHICS

  Journals

  ISSN: 1433-8157

• Conformal Geometry and Dynamics

  Journals

  ISSN: 1088-4173

• Groups Geometry and Dynamics

  Journals

  ISSN: 1661-7207 , eISSN: 1661-7215

• Geometry, Integrability and Quantization

  Journals

  ISSN: 1314-3247 , eISSN: 2367-7147

• JOURNAL OF DIFFERENTIAL GEOMETRY

  Journals

  ISSN: 0022-040X , eISSN: 1945-743X

• Journal of Symplectic Geometry

  Journals

  ISSN: 1527-5256 , eISSN: 1540-2347

• Journal of Noncommutative Geometry

  Journals

  ISSN: 1661-6952 , eISSN: 1661-6960

• JOURNAL OF ALGEBRAIC GEOMETRY

  Journals

  ISSN: 1056-3911 , eISSN: 1534-7486

• Innovations in Incidence Geometry

  Journals

  ISSN: 2640-7337 , eISSN: 2640-7345

• Journal of Computational Geometry

  Journals

  eISSN: 1920-189X

• JOURNAL OF GEOMETRY AND PHYSICS

  Journals

  ISSN: 0393-0440 , eISSN: 1879-1662

• Pipeline geometry defects in high resolution pig's data

  Publication

  • J. Lubkiewicz
  • P. Raczyński
  • K. Warnke
  • M. Zych

  - Year 2007

  Most of the pipelines have been inspected at least once using intelligent pigging. The problem of specific software for interactive presentation, analysis and comparison of features revealed during the consecutive geometry surveys is emphasized. Capabilities of a simultaneous measurement of internal geometry and metal loss features in a single run are illustrated. Advantages of application of statistical characteristics of both...

• Search for the most useful geometry of an acoustic journal bearing

  Publication

  • R. Gawarkiewicz

  - TRIBOLOGIA - Year 2017

  Computer simulations of a number of journal bearing’s geometries utilising acoustic levitation were carried out. The choice of the best geometry depended on the ability of a deformed shape, created by piezo-electric elements, to facilitate squeeze film ultrasonic levitation, and also to create three evenly distributed diverging aerodynamic gaps. Deformations of analysed variants of the bearing’s shape were generated by numerical...

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• Analyzing the Geometry of the Turnouts and Their Adjustment Basing on the Tacheometer Measurements

  Publication

  • S. Michał
  • K. Makowska-Jarosik

  - Year 2016

  The article presents the results of tacheometric measurements of a station throat, as well as the method of data preparation and analysis. The calculations covered the verification of the geometry and the location of railway turnouts and crossings. The analyses were performed for the selected parameters of the turnout geometry, including their lengths and track gauge in main sections. In addition, the data were analyzed to confirm...

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• Fast geometry scaling of UWB band-notch antennas

  Publication

  • S. Kozieł
  • A. Bekasiewicz

  - Year 2016

  Implementation of band-notch capability plays an important role in the design of ultra-wideband (UWB) antennas. At the same time, appropriate sizing of antenna geometry parameters in order to precisely allocate the notch at the required frequency as well as to ensure sufficient reflection level is quite challenging and has to be based—for reliability reasons—on full-wave electromagnetic (EM) simulations of the structure. In this...

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• Effect of the saw blade geometry at its static stiffness

  Publication

  • K. Duchnicz
  • R. Wasielewski

  - Annals of WULS, Forestry and Wood Technology - Year 2010

  W artykule opisano wpływ wybranych parametrów piły tarczowej wpływających w istotny sposób na jej sztywność statyczną.

• Analyzing the Geometry of the Turnouts and Their Adjustment Basing on the Tacheometer Measurements

  Publication

  • M. Strach
  • K. Makowska

  - Year 2016

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• The effect of heat exchanger geometry on adsorption chiller performance

  Publication

  • M. Sosnowski
  • K. Grabowska
  • J. Krzywański
  • W. Nowak
  • K. Sztekler
  • W. Kalawa

  - Journal of Physics : Conference Series - Year 2018

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• INFLUENCE OF INLET GEOMETRY ON THE EFFICIENCY OF 1MW STEAM TURBINE

  Publication

  • A. Koprowski
  • D. Gotowski
  • R. Rządkowski
  • R. Szczepanik

  - Journal of KONES - Year 2019

  The process of the design of the 1MW steam turbine includes designing the stator and rotor blades, the steam turbine inlet and exit, the casing and the rotor. A turbine that operates at rotation speeds other than 3000 rpm requires a gear box and generator with complex electronic software. This paper analyses the efficiency of eight turbine variants, including seven inlet geometries and three stages of stator as well as an eight...

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• The hydromechanics of hydrocephalus: Steady-state solutions for cylindrical geometry

  Publication

  • M. Kaczmarek
  • R. Subramaniam
  • S. Neff

  - BULLETIN OF MATHEMATICAL BIOLOGY - Year 1997

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• Elementary, binary and schlesinger transformations in differential ring geometry

  Publication

  • S. Leble

  - EUROPEAN PHYSICAL JOURNAL B - Year 2002

  Przedstawiono elementarne przekształcenia Darboux dla rozwiązania równań różniczkowych w pierścieniu. Przedstawiono nowe rozwiązania za pomocą przekształcenia Shlesingera jako granicy elementarnego pD.