Results 21 to 30 of about 938 (126)

INVESTIGATION OF THE DEPENDENCE OF EARTHQUAKE FOCUS COORDINATE DETERMINATION ERRORS ON CALCULATION METHODS (SPHERES AND HYPERBOLOIDS)

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2018
. Objectives This work is a continuation of a series of articles devoted to an analysis of the effect of the utilised second-order surface types on the accuracy of determining earthquake epicentre and hypocentre coordinates. Methods  In order to find the
Gaidarbek K. Aslanov   +3 more
doaj   +1 more source

Gaussian Curvature Effects on Graphene Quantum Dots

open access: yesNanomaterials, 2022
In the last few years, much attention has been paid to the exotic properties that graphene nanostructures exhibit, especially those emerging upon deforming the material.
Sergio de-la-Huerta-Sainz   +2 more
doaj   +1 more source

Geometric and Kinematic Analysis of Deployable Doubly Ruled Hyperboloids

open access: yesMegaron, 2017
This paper aims to develop deployable doubly ruled hyperboloid surfaces that can be used in architectural applications. First, the study systematically analyzes the geometric principles of hyperboloids generated by the ruled surface generation method and
Feray Maden, Koray Korkmaz
doaj   +1 more source

Design and Performance Evaluation of Asymmetric Hyperboloid Linear Ion Trap [PDF]

open access: yesZhipu Xuebao, 2021
Hyperbolic electrode linear ion trap is a good choice as the mass analyzer of miniaturized ion trap mass spectrometer for the reason that it has a compact size and excellent performance. However, ions are ejected from both opposite directions along the x-
WU Hui   +5 more
doaj   +1 more source

STUDENTS' APPROACHES ON WARPED SURFACE

open access: yesJournal of Industrial Design and Engineering Graphics, 2019
The geometric challenges in the architectural design of warped surface come mainly from the physical materialization. This paper presents structural forms based on warped surface and shows the types of structures made during the 20th and 21st century ...
Ana-Maria GRAUR   +2 more
doaj   +4 more sources

ANALYSIS OF ERROR DISTRIBUTION DENSITY IN DETERMINING THE COORDINATES OF EARTHING EARTH IN THE METHODS OF SPHERES AND ELLIPSOIDS

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2019
Objectives The purpose of the study is to obtain an expression for determining the coordinates of the earthquake focus using the ellipsoid method, as well as testing the possibility of using the method using the figures of the second order of the ...
T. G. Aslanov, U. A. Musaeva
doaj   +1 more source

METHODS FOR SOLVING THE INTERSECTION OF ROTATION AREAS WITH STRAIGHT LINES

open access: yesJournal of Industrial Design and Engineering Graphics, 2015
Given the frequent practical use of rotation areas, the paper proposes to study the methods for solving and determining the intersection of these rotation areas with various pipes, assimilated to the straight line.
Sanda Bodea, Magdalena Orban
doaj   +4 more sources

Wind-induced loads and integrity assessment of hyperboloid reflector of solar pow

open access: yesAlexandria Engineering Journal, 2016
Flow-induced loads and Strouhal frequencies of secondary hyperboloid reflector which is located at top of the central tower of a proposed solar power plant are investigated.
M. Eswaran, R.K. Verma, G.R. Reddy
doaj   +1 more source

WIRE STRUCTURE IMAGE-BASED 3D RECONSTRUCTION AIDED BY DEEP LEARNING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Objects and structures realized by connecting and bending wires are common in modern architecture, furniture design, metal sculpting, etc. The 3D reconstruction of such objects with traditional range- or image-based methods is very difficult and poses ...
V. V. Kniaz   +7 more
doaj   +1 more source

Septins in the Middle—Makers and Breakers of Membrane Contact Sites

open access: yesJournal of Neurochemistry, Volume 170, Issue 6, June 2026.
Septins are a family of GTP‐binding proteins that assemble into heteromeric oligomers and polymers, associating with specific membrane domains and organelles according to their subunit composition. Growing evidence places septins at membrane contact sites (MCS) — key hubs for intracellular communication that mediate exchange of ions, lipids, and ...
TrishaJean J. Holt, Elias T. Spiliotis
wiley   +1 more source

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