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ASPECTS AND GEOMETRIC INTERPRETATION IN SOLVING CONICAL SECTIONS

open access: yesJournal of Industrial Design and Engineering Graphics, 2019
In mathematics, a conic is the curve that is obtained by intersecting a plane with a cone. Is well known that the shape of this curve may differ quite a bit depending on the position of the intersection plane relative to the cone axis, as it is actually ...
Alina DUTA   +4 more
doaj   +4 more sources

Waveguide physical modeling of vocal tract acoustics: flexible formant bandwidth control from increased model dimensionality [PDF]

open access: yes, 2006
Digital waveguide physical modeling is often used as an efficient representation of acoustical resonators such as the human vocal tract. Building on the basic one-dimensional (1-D) Kelly-Lochbaum tract model, various speech synthesis techniques ...
Howard, D M, Mullen, J, Murphy, D T
core   +1 more source

Groupoids and an index theorem for conical pseudo-manifolds [PDF]

open access: yes, 2006
We define an analytical index map and a topological index map for conical pseudomanifolds. These constructions generalize the analogous constructions used by Atiyah and Singer in the proof of their topological index theorem for a smooth, compact manifold
Baaj Saad   +20 more
core   +6 more sources

Dissociative electron attachment to the H2O molecule. II. Nuclear dynamics on coupled electronic surfaces within the local complex potential model [PDF]

open access: yes, 2006
We report the results of a first-principles study of dissociative electron attachment to H2O. The cross sections are obtained from nuclear dynamics calculations carried out in full dimensionality within the local complex potential model by using the ...
A. R. Edmonds   +13 more
core   +3 more sources

Trichome morphology in Teucrium L. (Labiatae). A taxonomic review

open access: yesAnales del Jardín Botánico de Madrid, 1999
The micromorphology of trichomes of 56 Teucrium L. species belonging to the 9 sections of the genus in the Mediterranean área was surveyed by scanning electrón microscopy (SEM) of leaves, calyx, corolla and nutlets.
Teresa Navarro, Jalal el Oualidi
doaj   +1 more source

A compact targeted drug delivery mechanism for a next generation wireless capsule endoscope [PDF]

open access: yes, 2016
This paper reports a novel medication release and delivery mechanism as part of a next generation wireless capsule endoscope (WCE) for targeted drug delivery.
Constandinou, TG, Woods, S
core   +2 more sources

On the influence of turbulent kinetic energy level on accuracy of k − ε and LRR turbulence models [PDF]

open access: yesTheoretical and Applied Mechanics, 2018
This paper presents research regarding the influence of turbulent kinetic energy (TKE) level on accuracy of Reynolds averaged Navier–Stokes (RANS) based turbulence models.
Novković Đorđe M.   +3 more
doaj   +1 more source

Cold collisions of OH and Rb. I: the free collision [PDF]

open access: yes, 2006
We have calculated elastic and state-resolved inelastic cross sections for cold and ultracold collisions in the Rb($^1 S$) + OH($^2 \Pi_{3/2}$) system, including fine-structure and hyperfine effects.
B. R. Johnson   +14 more
core   +2 more sources

Analysis of quantum scattering characteristics for a cone illuminated with multiphoton in the remote sensing scene

open access: yesResults in Physics, 2023
The quantum radar cross sections (QRCS) for the targets are the critical basis for the optimization designs of stealth structures and quantum detection strategy.
Zhifu Tian   +4 more
doaj   +1 more source

The analysis of distributions of effective strain and flow stress in longitudinal sections of cold backward extruded copper cans for different punch-face shapes

open access: yesITM Web of Conferences, 2017
The paper presents computer modelling results of researches on cold backward extrusion of copper cans. The calculations were carried out using the commercial code QFORM-2D, based on the Finite Element Method (FEM).
Miłek Tomasz
doaj   +1 more source

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