نتایج جستجو برای: shape factor

تعداد نتایج: 1023669  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زنجان - دانشکده کشاورزی زنجان 1393

در این تحقیق به بررسی پارامترهای بیلان آب حوضه رودخانه آق چای در شمال استان آذربایجان غربی، با مساحت 1440.89 کیلومتر مربع پرداخته شده است. مدل سازی بارش-رواناب با گام زمانی روزانه و با استفاده از مدل نیمه توزیعی swat و بهینه سازی پارامترهای حوضه، بررسی عدم قطعیت مدل و پارامترها با برنامه swat-cup انجام گرفته است. کاربرد الگوریتم sufi-2 در بررسی عدم قطعیت نشان داد مقدار ضریب ناش برای دوره واسنج...

Journal: :J. Signal and Information Processing 2011
Om Prakash Ashish Khare

In this paper we have proposed an object tracking method using Dual Tree Complex Wavelet Transform (DTCxWT). The proposed method is capable of tracking the moving object in video sequences. The object is assumed to be deformable under limit i.e. it may change its shape from one frame to another. The basic idea in the proposed method is to decompose the image into two components: a two dimension...

2000
Raul Caetano Catherine L. Clark

Ethnic minorities (e.g., Hispanics, blacks, Asian-Americans, and Native Americans) are still underrepresented in alcohol research in the United States. Furthermore, existing studies often do not take into consideration the variability that exists within each ethnic group, resulting in inaccurate generalizations. Studies among Hispanics have found substantial differences among Hispanic subgroups...

2008
L. H. You P. Comninos Jian J. Zhang

In this paper we study analytical solutions of a fourth order partial differential equation subjected to different boundary conditions of solid modelling, and investigate the effects of various factors in the PDE and boundary conditions on the shape of the generated solids. With the proposed modelling technique, we can easily manipulate and modify the shape of the generated solid by altering a ...

Journal: :Comput. Graph. Forum 2016
Tiantian Liu Ming Gao Lifeng Zhu Eftychios Sifakis Ladislav Kavan

We present a shape manipulation technique capable of producing deformations of 2D and 3D meshes, guaranteeing that no elements will be inverted. We achieve this by augmenting the quadratic ex-rotated elastic energy with additional convex terms that penalize the presence of inverted elements. Using a schedule of increasing penalty coefficients, we efficiently and robustly converge to an inversio...

2007
J Colgan M Foster M S Pindzola F Robicheaux

Abstract We use the time-dependent close-coupling method to explore the triple differential cross sections produced by double photoionization of He and H2. Recent extensions of our technique have allowed extraction of the triple differential cross section as the double photoionization process evolves, allowing further exploration of the underlying mechanisms. We demonstrate that the angular dis...

2010
S. Gürsoy E. Güzel

In this study, for the purpose of determining physical and aerodynamic properties, some varieties of wheat, barley, chickpea and lentil were used. The length, width, thickness, geometric mean diameter, equivalent sphere diameter, sphericity, seed mass, bulk density, true density, projected area, terminal velocity, drag coefficient of each grain variety were determined. The theoretical terminal ...

2004
B. C. Dodrill

Introduction Anisotropy is a basic property of magnetic materials. The magnetization tends to lie in certain preferred directions, and the energy of the ferromagnet includes an anisotropy term Ea(θ,φ) where the angular coordinates θ,φ define the direction of magnetization. The anisotropy can be intrinsic, related to atomic scale interactions which define easy directions in the crystal (magnetoc...

Journal: :Robotics and Autonomous Systems 2009
Chih-Jen Wu Wen-Hsiang Tsai

A novel approach to location estimation by omni-directional vision for autonomous vehicle navigation in indoor environments using circular landmark information is proposed. A circular-shaped landmark is attached on a ceiling and an omni-directional camera is equipped on a vehicle to take upwardlooking omni-directional images of the landmark. This way of image taking reduces possible landmark sh...

1994
Pascal Fua Yvan G. Leclerc

A uni ed framework for 3{D shape reconstruction allows us to combine image-based and geometry-based information sources. The image information is akin to stereo and shape-fromshading, while the geometric information may be provided in the form of 3{D points, 3{D features or 2{D silhouettes. A formal integration framework is critical in recovering complicated surfaces because the information fro...

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