نتایج جستجو برای: shape indices

تعداد نتایج: 271485  

Journal: :SoftwareX 2023

This article presents Q-Facies, an open-source Python package for quantitative analysis of hydrochemical facies (HF). HF is widely used to interpret the chemical characteristics groundwater. However, it difficult analyse its spatial or temporal variability due qualitative nature and small number classes. To avoid these limitations, Q-Facies performs parametrization based on calculation five sta...

2006
Dharam Vir Lal Pramesh Rao

We present results from a study of X-shaped sources based on observations using the Giant Metrewave Radio Telescope (GMRT). These observations were motivated by our low frequency study of 3C 223.1 (Lal & Rao 2005), an X-shaped radio source, which showed that the wings (or low-surface-brightness jets) have flatter spectral indices than the active lobes (or high-surface-brightness jets), a result...

2009
Akshaya Kumar Mishra Paul W. Fieguth David A. Clausi

This paper presents a robust automatic shape classifier using modular wavelet networks (MWNs). A shape descriptor is constructed based on a combination of global geometric features (modified Zernike moments and circularity features) and local intensity features (ordered histogram of image gradient orientations). The proposed method utilizes a supervised modular wavelet network to perform shape ...

1998
Jong-il Kim Brian L. Evans

We introduce an e cient predictive binary shape coding method that consists of (1) global motion estimation, (2) local motion estimation, (3) matched segment coding, and (4) residual segment coding. Global and local motion estimation use contour pel matching and knowledge of previously reconstructed contours. After motion compensation, we code the one-dimensional reference contour indices of th...

Journal: :Evolution; international journal of organic evolution 2012
Locke Rowe Göran Arnqvist

Animal genitalia show two striking but incompletely understood evolutionary trends: a great evolutionary divergence in the shape of genitalic structures, and characteristic structural complexity. Both features are thought to result from sexual selection, but explicit comparative tests are hampered by the fact that it is difficult to quantify both morphological complexity and divergence in shape...

Journal: :Endocrinology 1999
S Suzuki I Yamamoto J Arita

Intracellular cAMP regulates cell proliferation as a second messenger of extracellular signals in a number of cell types. We investigated, by pharmacological means, whether an increase in intracellular cAMP levels changes proliferation rates of lactotrophs in primary culture, whether there are interactions between signal transduction pathways of cAMP and the growth factor insulin, and where the...

2014
Saleem Iqbal Khalid Iqbal Fahim Arif Arslan Shaukat Aasia Khanum

Computed tomography (CT) is an important imaging modality. Physicians, surgeons, and oncologists prefer CT scan for diagnosis of lung cancer. However, some nodules are missed in CT scan. Computer aided diagnosis methods are useful for radiologists for detection of these nodules and early diagnosis of lung cancer. Early detection of malignant nodule is helpful for treatment. Computer aided diagn...

2018
Yohei Takai Miyuki Nakatani Toru Aoki Daisuke Komori Kazuyuki Oyamada Kensuke Murata Eiji Fujita Takuya Akamine Yoshihisa Urita Masayoshi Yamamoto Hiroaki Kanehisa

It is unknown whether body size and body shape parameters can be predictors for estimating whole body fat-free mass (FFM) in male athletes. This study aimed to investigate whether body size and shape variables can be predictors for FFM in male athletes. Using a whole-body dual-energy X-ray absorptiometry scanner, whole body fat mass (FM) and FFM were determined in 132 male athletes and 14 seden...

1995
Jean-Yves Thibon Dominique Foata

Let K be a field of characteristic 0, and X = (xij)1≤i, j≤n a matrix of commutative indeterminates. The ring K[xij ] may be regarded as the algebra F [Mat n] of polynomial functions on the space of n×n matrices over K. A linear basis of this algebra is given by the bitableaux of Désarménien, Kung, Rota [6], which are defined in the following way. Given two (semistandard) Young tableaux τ and τ ...

2012
Demetris DEMETRIOU

Land fragmentation, which implies a defective land tenure structure, is a major problem at various spatial scales, and may hinder effective agricultural production and sustainable rural development. Policy decisions to reduce land fragmentation require reliable measurement indices. However, current indices present significant weaknesses since they do not take all of the relevant factors into ac...

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