9 research outputs found

    The Constructive procedures in the spatial transformations of the surface elliptical hyperboloid of one sheet

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    ΠˆΠ΅Π΄Π½ΠΎΠ³Ρ€Π°Π½ΠΈ Π΅Π»ΠΈΠΏΡ‚ΠΈΡ‡ΠΊΠΈ Ρ…ΠΈΠΏΠ΅Ρ€Π±ΠΎΠ»ΠΎΠΈΠ΄ (ΠˆΠ•Π₯) јС Π½Π°Ρ˜ΠΎΠΏΡˆΡ‚ΠΈΡ˜ΠΈ ΡΠ»ΡƒΡ‡Π°Ρ˜ ΠΏΠΎΠ²Ρ€ΡˆΠΈ двострукС закривљСности, ΠΈΠ· ΠΏΠΎΡ€ΠΎΠ΄ΠΈΡ†Π΅ ΠΏΡ€Π°Π²ΠΎΠΈΠ·Π²ΠΎΠ΄Π½ΠΈΡ… ΠΏΠΎΠ²Ρ€ΡˆΠΈ, која Π½Π°ΡΡ‚Π°Ρ˜Π΅ клизањСм јСднС трансвСрзалС–гСнСратрисС, Π΄ΡƒΠΆ Ρ‚Ρ€ΠΈ дирСктрисС – ΠΌΠΈΠΌΠΎΠΈΠ»Π°Π·Π½Π΅ ΠΏΡ€Π°Π²Π΅ простора. Π”ΠΈΡΠ΅Ρ€Ρ‚Π°Ρ†ΠΈΡ˜Π° дајС ΠΎΠ΄Π³ΠΎΠ²ΠΎΡ€ Π½Π° Π΄Ρ€ΡƒΠ³Π°Ρ‡ΠΈΡ˜ΠΈ ΠΏΡ€ΠΈΠ»Π°Π· Π·Π° ΠΏΠΎΡΡ‚Π°Π²Ρ™Π°ΡšΠ΅ ΠΊΠΎΠ½ΡΡ‚Ρ€ΡƒΠΊΡ‚ΠΈΠ²Π½ΠΎβ€“Π³Π΅ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΡ˜ΡΠΊΠΎΠ³ ΠΎΠΊΠ²ΠΈΡ€Π° ΠΏΠΎΠ²Ρ€ΡˆΠΈ Ρƒ простор. Π—Π°Π΄Π°Π²Π°ΡšΠ΅ΠΌ просторног ΡˆΠ΅ΡΡ‚ΠΎΡ‚Π΅ΠΌΠ΅Π½ΠΈΠΊΠ° – носача Π²ΠΎΠ΄ΠΈΡ™Π° ΠΏΠΎΠ²Ρ€ΡˆΠΈ, Ρƒ Ρ€Π°Π·Π»ΠΈΡ‡ΠΈΡ‚ΠΈΠΌ Π²Π°Ρ€ΠΈΡ˜Π°Π½Ρ‚Π°ΠΌΠ° полоТаја, Π΄Π²Π° ΠΏΡƒΡ‚Π° ΠΏΠΎ Ρ‚Ρ€ΠΈ ΠΈΠ·Π²ΠΎΠ΄Π½ΠΈΡ†Π΅, ΠΈΠ· Ρ€Π°Π·Π»ΠΈΡ‡ΠΈΡ‚ΠΈΡ… систСма ΠΈΠ·Π²ΠΎΠ΄Π½ΠΈΡ†Π°, Ρƒ Π½ΠΎΠ²ΠΎΠΌ ΠΎΠΊΠ²ΠΈΡ€Ρƒ, Ρ€Π°Π·Π²ΠΈΡ˜Π΅Π½ јС Π½ΠΈΠ· конструктивних поступака, којима сС Π³Π΅Π½Π΅Ρ€ΠΈΡˆΠ΅ ΠΏΠΎΠ²Ρ€Ρˆ ΠΈ ΠΎΠ΄Ρ€Π΅Ρ’ΡƒΡ˜Ρƒ Π³Π»Π°Π²Π½ΠΈ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΈ ΠˆΠ•Π₯–а: ΡΡ€Π΅Π΄ΠΈΡˆΡ‚Π΅, Π³Π»Π°Π²Π½Π΅ ΠΎΡ€Ρ‚ΠΎΠ³ΠΎΠ½Π°Π»Π½Π΅ осС ΠΈ Ρ€Π°Π²Π½ΠΈ ΡΠΈΠΌΠ΅Ρ‚Ρ€ΠΈΡ˜Π΅, стрикциона Слипса ΠΈ Ρ‚Π΅ΠΌΠ΅Π½Π° ΠΈ ΡƒΡ‚Π²Ρ€Ρ’ΡƒΡ˜Ρƒ ΡšΠΈΡ…ΠΎΠ²Π΅ мСђусобнС Ρ€Π΅Π»Π°Ρ†ΠΈΡ˜Π΅. ΠŸΠΎΡΡ‚ΡƒΠΏΡ†ΠΈΠΌΠ° ΠΈ Π½Π°ΡƒΡ‡Π½ΠΎ заснованим ΠΌΠ΅Ρ‚ΠΎΠ΄Π°ΠΌΠ° ΠΏΡ€ΠΎΡ˜Π΅ΠΊΡ‚ΠΈΠ²Π½Π΅ синтСтичкС Π³Π΅ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΡ˜Π΅, Π½Π°Ρ†Ρ€Ρ‚Π½Π΅ Π³Π΅ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΡ˜Π΅ ΠΈ Π°Π»Π°Ρ‚ΠΈΠΌΠ° ΠΊΠΎΠΌΠΏΡ˜ΡƒΡ‚Π΅Ρ€ΡΠΊΠ΅ Π³Ρ€Π°Ρ„ΠΈΠΊΠ΅, Ρƒ 3D ΠΎΠΊΡ€ΡƒΠΆΠ΅ΡšΡƒ (ΡƒΠ· ΡƒΠΏΠΎΡ‚Ρ€Π΅Π±Ρƒ софтвСра Auto CAD), Ρ‚Π΅Π·Π° дајС Π½Π°ΡƒΡ‡Π½ΠΈ допринос, ΠΊΡ€ΠΎΠ· Ρ€Π΅ΡˆΠ΅ΡšΠ° – конструктивнС поступкС ΠΈ тСорСтскС Π·Π°ΠΊΡ™ΡƒΡ‡ΠΊΠ΅, Ρƒ сфСри Π³Π΅ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΡ˜Π΅ ΠΏΡ€Π°Π²ΠΎΠΈΠ·Π²ΠΎΠ΄Π½Π΅ ΠΏΠΎΠ²Ρ€ΡˆΠΈ ΠˆΠ•Π₯–а ΠΈ ΡšΠ΅Π½ΠΈΡ… Ρ‚ΠΈΠΏΠΎΠ²Π°. Π£ конструктивним поступцима просторних Π°Ρ„ΠΈΠ½ΠΈΡ… Ρ‚Ρ€Π°Π½ΡΡ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΡ˜Π° Ρ˜Π΅Π΄Π½ΠΎΠ³Ρ€Π°Π½ΠΈΡ… Ρ…ΠΈΠΏΠ΅Ρ€Π±ΠΎΠ»ΠΎΠΈΠ΄Π°, Ρ‡ΠΈΡ˜Π΅ су Π²ΠΎΠ΄ΠΈΡ™Π΅ уписанС Ρƒ тространС ΠΏΡ€ΠΈΠ·ΠΌΠ΅, ΡƒΡ‚Π²Ρ€Ρ’Π΅Π½Π΅ су ΠΈΠ½Π²Π°Ρ€ΠΈΡ˜Π°Π½Ρ‚Π΅ Ρ‚ΠΈΠΏΠΎΠ²Π° Ρ‚Ρ€Π°Π½ΡΡ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΡ˜Π°. На постављСним ΠΏΡ€ΠΈΠ½Ρ†ΠΈΠΏΠΈΠΌΠ° иници–рана.су Π΄Π°Ρ™Π° ΠΈΡΡ‚Ρ€Π°ΠΆΠΈΠ²Π°ΡšΠ° Ρ€Π΅Π»Π°Ρ†ΠΈΡ˜Π° ΠΎΠΏΡˆΡ‚ΠΈΡ… ΠΈ ΡΠΏΠ΅Ρ†ΠΈΡ˜Π°Π»Π½ΠΈΡ… Ρ‚ΠΈΠΏΠΎΠ²Π° ЈΠ₯, Ρƒ ΠΎΠΊΠ²ΠΈΡ€Ρƒ истС Ρ„Π°ΠΌΠΈΠ»ΠΈΡ˜Π΅ ΠΏΠΎΠ²Ρ€ΡˆΠΈ. Анализом свих Ρ‚ΠΈΠΏΠΎΠ²Π° прСсСка ΠΏΠΎΠ²Ρ€ΡˆΠΈ ΠˆΠ•Π₯–а са Ρ€Π°Π²Π½ΠΈΠΌΠ°, ΡƒΠ· ΡƒΡΠΏΠΎΡΡ‚Π°Π²Ρ™Π°ΡšΠ΅ ΠΊΠΎΡ€Π΅Π»Π°Ρ†ΠΈΡ˜Π° са ΠΏΠΎΠ»Π°Ρ€Π½ΠΈΠΌ карактСристикама ΠΏΠΎΠ²Ρ€ΡˆΠΈ, створСна јС Ρ‚Π΅ΠΎΡ€ΠΈΡ˜ΡΠΊΠ° Π±Π°Π·Π° знања, корисна Π·Π° ΠΏΡ€Π°ΠΊΡ‚ΠΈΡ‡Π½Ρƒ ΠΏΡ€ΠΈΠΌΠ΅Π½Ρƒ Ρ†Π΅Π»Π΅ ΠΏΠΎΠ²Ρ€ΡˆΠΈ, ΠΈΠ»ΠΈ ΡšΠ΅Π½ΠΈΡ… исСчака, Ρƒ поступцима Π³Π΅ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΡ˜ΡΠΊΠΎΠ³ 3D модСловања. ΠœΠΎΠ΄Π΅Π»ΠΈβ€“ΡΡ‚Ρ€ΡƒΠΊΡ‚ΡƒΡ€Π΅, са Π·Π°Π΄Π°Ρ‚ΠΈΠΌ ΠΏΡ€Π°Π²ΠΈΠ»Π½ΠΈΠΌ ΠΌΠ°Ρ‚Ρ€ΠΈΡ†Π°ΠΌΠ°, ΠΊΡ€Π΅ΠΈΡ€Π°Π½ΠΈ 3D поступцима, ΠΎΠ΄ исСчака ΠΏΡ€Π°Π²ΠΎΠ³ ΠΈΠ»ΠΈ косог Ρ‚ΠΈΠΏΠ° ΠˆΠ•Π₯–а, ΠΏΡ€Π΅Π΄ΡΡ‚Π°Π²Ρ™Π°Ρ˜Ρƒ ΠΏΡ€ΠΎΡ‚ΠΎΡ‚ΠΈΠΏ Π·Π° ΡˆΠΈΡ€ΠΎΠΊΡƒ ΠΏΠ°Π»Π΅Ρ‚Ρƒ могућности ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅ Ρƒ архитСктонском ΠΎΠ±Π»ΠΈΠΊΠΎΠ²Π°ΡšΡƒ ΠΊΡ€ΠΎΠ²Π½ΠΈΡ… ΠΏΠΎΠ²Ρ€ΡˆΠΈΠ½Π° ΠΈΠ»ΠΈ Ρ†Π΅Π»ΠΈΡ… ΠΎΠ±Ρ˜Π΅ΠΊΠ°Ρ‚Π°. Π‘Π»ΠΈΡ‡Π°Π½, ΠΏΡ€Π°ΠΊΡ‚ΠΈΡ‡Π½ΠΎ ΠΏΡ€ΠΈΠΌΠ΅Π½Ρ™ΠΈΠ², Ρ€Π΅Π·ΡƒΠ»Ρ‚Π°Ρ‚ Π΄Π°ΠΎ јС ΠΈ Π΄Π΅ΠΎ ΠΈΡΡ‚Ρ€Π°ΠΆΠΈΠ²Π°ΡšΠ° Π²Π΅Π·Π°Π½ Π·Π° ΠΏΡ€ΠΎΠ΄ΠΎΡ€Π΅ основних ΠΏΠΎΠ²Ρ€ΡˆΠΈ Π΄Ρ€ΡƒΠ³ΠΎΠ³ стСпСна ΠΈ ΠˆΠ•Π₯–а. ОваквС ΠΊΠΎΠΌΠ±ΠΈΠ½Π°Ρ†ΠΈΡ˜Π΅ ΠΏΠΎΠ²Ρ€ΡˆΠΈ, Ρƒ поступцима просторног Π³Π΅ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΡ˜ΡΠΊΠΎΠ³ модСловања су скуп смСрница, ΠΊΠ°ΠΎ Π΄Π΅ΠΎ ΠΈΠ½ΠΈΡ†ΠΈΡ˜Π°Ρ‚ΠΈΠ²Π΅ ΠΈ ΠΈΠ½ΡΠΏΠΈΡ€Π°Ρ†ΠΈΡ˜Π΅ Π·Π° ΠΏΡ€ΠΎΡ˜Π΅ΠΊΡ‚Π°Π½Ρ‚Π΅ ΠΈ Π³Ρ€Π°Π΄ΠΈΡ‚Π΅Ρ™Π΅. Π Π΅Π·ΡƒΠ»Π°Ρ‚Π°Ρ‚ΠΈ ΠΈΡΡ‚Ρ€Π°ΠΆΠΈΠ²Π°ΡšΠ° су Ρ€Π΅Π°Π»ΠΈΠ·ΠΎΠ²Π°Π½ΠΈ ΠΈ ΠΊΡ€ΠΎΠ· Π΄Π²Π΅ Π°ΠΏΠ»ΠΈΠΊΠ°Ρ†ΠΈΡ˜Π΅ Ρƒ софтвСру Auto CAD (писану Аuto–lisp програмским јСзиком), која користи ΠΊΡ€ΡƒΠΆΠ½Π΅ прСсСкС ΠˆΠ•Π₯–а, Π·Π° Π³Π΅Π½Π΅Ρ€ΠΈΡΠ°ΡšΠ΅ ΠΆΠΈΡ‡Π°Π½ΠΎΠ³ ΠΈ ΠΏΠΎΠ²Ρ€ΡˆΠΈΠ½ΡΠΊΠΎΠ³ ΠΌΠΎΠ΄Π΅Π»Π° ΠΏΠΎΠ²Ρ€ΡˆΠΈ, са триангулисаном ΠΌΡ€Π΅ΠΆΠΎΠΌ. Апликативност прСсСка ΠΏΠΎΠ²Ρ€ΡˆΠΈ ΠΏΠΎ ΠΈΠ·Π²ΠΎΠ΄Π½ΠΈΡ†Π°ΠΌΠ° ΠΈ ΠΊΡ€ΡƒΠΆΠ½ΠΈΡ†Π°ΠΌΠ°, ΠΎΠ΄ Π·Π½Π°Ρ‡Π°Ρ˜Π° јС Π·Π° праксу Π³Ρ€Π°Ρ’Π΅ΡšΠ°, која Ρ‚Π΅ΠΆΠΈ Ρ˜Π΅Π΄Π½ΠΎΡΡ‚Π°Π²Π½ΠΎΡΡ‚ΠΈ ΠΈΠ·Π²ΠΎΡ’Π΅ΡšΠ°, Π° Π΄Π° ΠΏΡ€ΠΈ Ρ‚ΠΎΠΌΠ΅ Π½Π΅ ΡƒΠΌΠ°ΡšΡƒΡ˜Π΅ СстСтску врСдност Ρ†Π΅Π»ΠΎΠΊΡƒΠΏΠ½Π΅ Ρ„ΠΎΡ€ΠΌΠ΅...Elliptic hyperboloid of one sheet (EHOS) is the general case of a double curved surface, from the family of ruled surfaces, which generates by ruling of a line–generator along three directing skewed lines, in the space. The dissertation gives an answer to a task – finding a new approach in creating constructive–geometry "boundaries" for this surface in the space settlement. A wide range of constructive procedures, for the determination and mutual relations of the main parameters of EHOS: center of the surface, orthogonal axes, planes of symmetry, minimal section curve (elliptical "throat") and its vertexes came out from the concept of hexagramic spatial "carrier" of two times three directors – skewed lines, in variety of their positions. The employment of procedures and scientifically based methods of Projective Synthetic Geometry, Descriptive Geometry and tools of computer graphics, in 3D surroundings (using Auto CAD software for engineers), are of importance for the scientific contributions of this dissertation, achieved solutions – constructive procedures and theoretical conclusions, in the sphere of geometry of ruled surface EHOS and its types. In the constructive procedures of spatial affine transformations of hyperboloids of one sheet, whose directing lines are "inscribed" in three sided prisms, the invariants of all the types of transformations are determined. Further investigations, concerning relations of general and special types of HOS, inside the same family of surfaces, are initiated by settled principles. The analysis of all the types of sections of EHOS, including the correlation to the polar properties of the surface, resulted with theoretical base, as an input for the practical application of "whole" surface or its fragments, in the procedures of 3D geometrical modeling. The models – structures, above regular patterns (polygons) are created by 3D procedures and tools, using fragments of straight or inclined EHOS. They represent the prototypes for the creative palette of possible architectural shapes of roofs or buildings. Very similar results came out of the part of research, concerning intersections of EHOS and basic second order surfaces (primitives): cone, cylinder and sphere. The "combinations" of such surfaces, in 3D geometrical modeling procedures, offered just some directions, like an initiation and inspiration for the architects and civil engineers..

    30th International Conference on Electrical Contacts, 7 – 11 Juni 2021, Online, Switzerland: Proceedings

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    Review of Particle Physics

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    The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,873 new measurements from 758 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 118 reviews are many that are new or heavily revised, including a new review on Neutrinos in Cosmology.Starting with this edition, the Review is divided into two volumes. Volume 1 includes the Summary Tables and all review articles. Volume 2 consists of the Particle Listings. Review articles that were previously part of the Listings are now included in volume 1.The complete Review (both volumes) is published online on the website of the Particle Data Group (http://pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is also available.The 2018 edition of the Review of Particle Physics should be cited as: M. Tanabashi (Particle Data Group), Phys. Rev. D 98, 030001 (2018)

    Review of Particle Physics: Particle Data Group

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    The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,873 new measurements from 758 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 118 reviews are many that are new or heavily revised, including a new review on Neutrinos in Cosmology. Starting with this edition, the Review is divided into two volumes. Volume 1 includes the Summary Tables and all review articles. Volume 2 consists of the Particle Listings. Review articles that were previously part of the Listings are now included in volume 1. The complete Review (both volumes) is published online on the website of the Particle Data Group (http://pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is also available
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