نتایج جستجو برای: shape factor

تعداد نتایج: 1023669  

Journal: :IOP Conference Series: Materials Science and Engineering 2020

ژورنال: فیزیک زمین و فضا 2015

In this research, we have used 102 strong motion recordings from 2012 Ahar-Varzaghan earthquakes (Mw=6.5 and Mw=6.3) to study the form of attenuation of shear wave Fourier amplitude spectra of those two events. The analysis is carried out in a broad-band frequency range from 0.1 to 20 Hz. A bilinear shape for geometrical spreading is assumed based on nonparametric regression of the data. The hi...

ژورنال: ژئوفیزیک ایران 2020
Mohammad Barazesh Seyed-Hani Motavalli-Anbaran

A quadratic surface can be fitted to potential-field data within 3×3 windows, which allow us to calculate curvature attributes from its coefficients. Phillips (2007) derived an equation depending on the most negative curvature to obtain the depth and structural index of isolated sources from peak values of special functions. They divided the special functions into two categories: Model-specific...

This study describes morphological diversity and relationship of 14 cultivars and 133 wild fig accessions from central Zagros Mountains located in the west of Iran, based on 58 morphological characters. Among all characters, secondary drooping branches, number of bark tubers, shape of central lobe, length of central lobe/length of lamina, little lateral lobes, shape of leaf without lobed, fruit...

2001
Daniel D. Morris Kenichi Kanatani Takeo Kanade

Computer vision techniques can estimate 3D shape from images, but usually only up to a scale factor. The scale factor must be obtained by a physical measurement of the scene or the camera motion. Using gauge theory, we show that how this scale factor is determined can significantly affect the accuracy of the estimated shape. And yet these considerations have been ignored in previous works where...

2016
U. U. SHEIKH A. H. OMAR N. A. ZAKARIA N. H. MAHMOOD

In this paper, we extend our previous work in investigating the performance of XZ-shape histogram for recognizing human performing activities of daily living (ADLs) which focuses on human-object interaction activities based on Kinect-like depth image. The feasibility of XZ-shape histogram as well as general 3D shape descriptors namely; 1) shape distribution, 2) shape histogram, 3) global spin i...

2009
T. Hotz S. Huckemann A. Munk

We analyse the shapes of star-shaped objects which are pre-aligned. This is motivated from two examples studying the growth of leaves, and the temporal evolution of tree rings. In the latter case measurements were taken at fixed angles while in the former case the angles were free. Subsequently, this leads to different shape spaces, related to different concepts of size, for the analysis. While...

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