نتایج جستجو برای: curve and s

تعداد نتایج: 16926865  

2015
Wen Nie Wei Xian Feng-Lin Xu Lin Chen Takayoshi Kobayashi

Rainfall-induced soil erosion of a mountain area plays a significant role in supplying sediment and shaping the landscape. The related area of soil erosion, as an index of the changed landscape, is easier to calculate visually using some popular imaging tools. By image analysis, our work shows that the changing of the soil erosion area admits the structure of an S-growth curve. Therefore, we pr...

Journal: :Journal of the Society of Materials Science, Japan 2007

Journal: :Fatigue & Fracture of Engineering Materials & Structures 2020

Journal: :IEEE-ASME Transactions on Mechatronics 2021

This article proposes a new optimization algorithm that assures the minimum possible duration of generalized S-curve trajectories compliant with kinematic limitations and capable suppressing residual vibrations when tracked by resonant plant. Thanks to possibility generating such kind chain filters, called smoothers, each one characterized single parameter, i.e., <inline-formula xmlns:mml="http...

Journal: :Computer-Aided Design 1996
In-Kwon Lee Myung-Soo Kim Gershon Elber

An algorithm is presented to approximate planar offset curves within an arbitrary tolerance > 0. Given a planar parametric curve C(t) and an offset radius r, the circle of radius r is first approximated by piecewise quadratic Bézier curve segments within the tolerance . The exact offset curve Cr(t) is then approximated by the convolution of C(t) with the quadratic Bézier curve segments. For a p...

1999
Jean Gallier

In this paper, we give a simple method for drawing a closed rational curve speciied in terms of control points as two B ezier segments. The main result is the following: For every aane frame (r; s) (where r < s), for every rational curve F(t) speciied over r; s] by some control polygon (0 ; : : : ; m) (where the i are weighted control points or control vectors), the control points (0 ; : : : ; ...

شاهوردی, فرشته , فرهبد, امیر حسین , مرشدیان, نادر ,

In this paper, the electron temperature and ion density of laser-produced plasma in nanosecond regime in different pressure of ambient gas have been studied by using single Langmuir probe. Using the current-voltage characteristics curve of probe, the value of electron temperature in different pressure (range of 10-5×10-5 mbar) is in the range of 2-29 eV and also the ion density estimated about ...

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