نتایج جستجو برای: shape index

تعداد نتایج: 579731  

Journal: :PloS one 2015
Syed Ashiqur Rahman Donald Adjeroh

BACKGROUND Obesity is a global public health challenge. In the US, for instance, obesity prevalence remains high at more than one-third of the adult population, while over two-thirds are obese or overweight. Obesity is associated with various health problems, such as diabetes, cardiovascular diseases (CVDs), depression, some forms of cancer, sleep apnea, osteoarthritis, among others. The body m...

Journal: :J. Informetrics 2011
Chung-Huei Kuan Mu-Hsuan Huang Dar-Zen Chen

Wepropose a geometric interpretation to the ranking of patent assignees by their h-indices as indicating the relative positions of their rank-citation curves.We thenpropose two shape descriptors characterizing the rank-citation curves over the h-cores and h-tails, respectively. Together with the h-indices, the shape descriptors help verifying the geometric relationship among rank-citation curve...

2000
Lifeng Liu Stan Sclaroff

An improved method for deformable shape-based image indexing and retrieval is described. A pre-computed index tree is used to improve the speed of our previously reported on-line model fitting method; simple shape features are used as keys in a pre-generated index tree of model instances. A coarse to fine indexing scheme is used at different levels of the tree to further improve speed. Experime...

2014
Sharma Sowmya Tinku Thomas Ankalmadagu Venkatsubbareddy Bharathi Sambashivaiah Sucharita

Background. One third of Indian population is said to be suffering from chronic energy deficiency (CED), with increased risk of developing chronic diseases. A new anthropometric measure called A Body Shape Index (ABSI) is said to be a better index in predicting risks for premature mortality. ABSI is also in part said to be a surrogate of visceral fat. Objective. The present study aimed to explo...

2012
Nir Y. Krakauer Jesse C. Krakauer

BACKGROUND Obesity, typically quantified in terms of Body Mass Index (BMI) exceeding threshold values, is considered a leading cause of premature death worldwide. For given body size (BMI), it is recognized that risk is also affected by body shape, particularly as a marker of abdominal fat deposits. Waist circumference (WC) is used as a risk indicator supplementary to BMI, but the high correlat...

Journal: :Investigative ophthalmology & visual science 2015
Adnan James M Pope Farshid Sepehrband Marwan Suheimat Pavan K Verkicharla Sanjeev Kasthurirangan David A Atchison

PURPOSE To compare lens dimensions and refractive index distributions in type 1 diabetes and age-matched control groups. METHODS There were 17 participants with type 1 diabetes, consisting of two subgroups (7 young [23 ± 4 years] and 10 older [54 ± 4 years] participants), with 23 controls (13 young, 24 ± 4 years; 10 older, 55 ± 4 years). For each participant, one eye was tested with relaxed a...

2014
D Barbieri G Citti A Sarti

We propose a theoretical motivation to quantify actual physiological features, such as the shape index distributions measured by Jones and Palmer in cats and by Ringach in macaque monkeys. We will adopt the uncertainty principle associated to the task of detection of position and orientation as the main tool to provide quantitative bounds on the family of simple cells concretely implemented in ...

2000
Lifeng Liu Stan Sclaroff

Based on our previous work in deformable shape modelbased object detection, a new method is proposed that uses index trees for organizing shape features to support contentbased retrieval applications. In the proposed strategy, different shape feature sets can be used in index trees constructed for object detection and shape similarity comparison respectively. There is a direct correspondence be...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2008
Huanjun Chen Xiaoshan Kou Zhi Yang Weihai Ni Jianfang Wang

Gold nanoparticles of different shapes and sizes, including nanospheres, nanocubes, nanobranches, nanorods, and nanobipyramids, were dispersed into water-glycerol mixtures of varying volume ratios to investigate the response of their surface plasmon peaks to the refractive index of the surrounding medium. The refractive index sensitivities and figures of merit were found to be dependent on both...

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