نتایج جستجو برای: slope percentage

تعداد نتایج: 186255  

Journal: :Acta neurobiologiae experimentalis 2013
Xiao Rong Wei Zhou Chen Xiao-Wen Li Tao Juan Tang

This study investigated the neuronal protective effect of monosialotetrahexosylganglioside (GM1) on the hypoxia-ischemia white matter damage (WMD) in neonatal rats. Brain hypoxia-ischemia was induced by bilateral carotid artery occlusion in 4-day-old neonatal rats. Bilateral carotid artery occlusion (BCAO) was performed in rats in WMD and GM1 groups, while in sham group; the rat bilateral carot...

Journal: :ISPRS Int. J. Geo-Information 2015
Zhonghao Zhang Xiaoqin Yang Rui Xiao

Using box-counting and spatial regression, this paper analyzes the morphological characteristics of coastal settlement patterns and their spatial determinants, with a case of the Wen-Tai region on the Chinese eastern coast. Coastal settlement patterns, which reflect the interactions between people and the surrounding environment, can indicate the anthropogenic pressure sustained in the coastal ...

Journal: :American journal of respiratory and critical care medicine 2005
Yasutaka Nakano Jonathan C Wong Pim A de Jong Lilliana Buzatu Taishi Nagao Harvey O Coxson W Mark Elliott James C Hogg Peter D Paré

Chronic obstructive pulmonary disease is characterized by destruction of the lung parenchyma and/or small airway narrowing. To determine whether the dimensions of relatively large airways assessed using computed tomography (CT) reflect small airway dimensions measured histologically, we assessed these variables in nonobstructed or mild to moderately obstructed patients having lobar resection fo...

2009
Jon P. Nelson

This paper estimates hedonic price models for a sample of 610 vacation rental houses located in the vicinity of a lake and four-season ski-golf resort. Hedonic semilogarithmic regression models are estimated for peak summer and peak winter rentals for 2008. The regression estimates for weekly rental prices are conditioned on explanatory variables for house size, house quality, and locational fe...

Journal: :مدیریت خاک و تولید پایدار 0
سعیده مرزوان دانشگاه گیلان حسین اسدی عضو هیات علمی دانشگاه گیلان ناصر دواتگر موسسه تحقیقات برنج کشور

to study the effects of scale and tillage management on variability of soil properties in adjacent lands of different tillage type, soil sampling was performed linearly along contour line from the middle position of slope with 5 m intervals. in overall, 45 soil samples were collected from a field with conventional up-down tillage and 40 samples from an adjacent filed with contour tillage. soil ...

2007
Chris Tofallis

Percentage error (relative to the observed value) is often felt to be more meaningful than the absolute error in isolation. The mean absolute percentage error (MAPE) is widely used in forecasting as a basis of comparison, and regression models can be fitted which minimize this criterion. Unfortunately, no formula exists for the coefficients, and models for a given data set may not be unique. We...

ژورنال: آبخیزداری ایران 2022

In this study, using the frequency ratio (FR) model, an attempt has been made to identify areas with high groundwater potential of the Sira catchment. Effective factors for preparing groundwater potential map including slope aspect, slope percentage, slope length (LS), Elevation, stream power index (SPI), topographic wetness index (TWI), plan curvature, distance to rivers, distance to roads, di...

2015
Jiandong Yin Jiawen Yang Lu Han Qiyong Guo Wei Zhang

BACKGROUND Traditional subjective method for the analysis of time-intensity curves (TICs) from breast dynamic contrast enhanced MRI (DCE-MRI) presented a low specificity. Hence, a semi-automatic quantitative method was proposed and evaluated for distinguishing invasive ductal carcinomas from benign lesions. MATERIALS AND METHODS In the traditional method, the lesion was extracted by placing a...

2018
Jiandong Yin Jiawen Yang Zejun Jiang

Purpose: To investigate the performance of a new semi-automatic method for analyzing the signal time-intensity curve (TIC) obtained by breast dynamic contrast enhancement (DCE)-MRI. Methods: In the conventional method, a circular region of interest was drawn manually onto the map reflecting the maximum slope of increase (MSI) to delineate the suspicious lesions. The mean TIC was determined subj...

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