نتایج جستجو برای: swe

تعداد نتایج: 1017  

2015
David Buckingham Christian Skalka Josh Bongard

Infrastructure for the automatic collection of single-point measurements of snow water equivalent (SWE) is well-established. However, because SWE varies significantly over space, the estimation of SWE at the catchment scale based on a single-point measurement is error-prone. We propose low-cost, lightweight methods for near-real-time estimation of mean catchment-wide SWE using existing infrastr...

2016
Edward H. Bair Karl Rittger Robert E. Davis Thomas H. Painter Jeff Dozier

Accurately estimating basin-wide snow water equivalent (SWE) is the most important unsolved problem in mountain hydrology. Models that rely on remotely sensed inputs are especially needed in ranges with few surface measurements. The NASA Airborne Snow Observatory (ASO) provides estimates of SWE at 50 m spatial resolution in several basins across the Western U.S. during the melt season. Primaril...

2017
Zhao Liu Hui Jing Xue Han Hua Shao Yi-Xin Sun Qiu-Cheng Wang Wen Cheng

To retrospectively evaluate the diagnostic performance of shear wave elastography (SWE) and thyroid imaging reporting and data system (TI-RADS) in differentiating malignant and benign thyroid nodules. A total of 313 thyroid nodules in 227 patients were included. All thyroid nodules were underwent SWE and TI-RADS before fine needle aspiration biopsy and/or surgery. SWE elasticity indices of the ...

2017
Yang Sun Chuan Ma XiaoLong Liang Run Wang Ying Fu ShuMin Wang LiGang Cui ChunLei Zhang

Shear Wave Elastography (SWE) is an objective and non-invasive method widely used to quantify the tissue solidity. However, there are concerns about the accuracy of the skin SWE results due to the low signal-to-noise ratio (SNR) caused by subcutaneous fat, muscle and bone. This article analyzed the reproducibility of the result for skin SWE and therefore evaluated the availability of SME for sk...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2010
François Vachon Kalifa Goita Danielle De Sève Alain Royer

Snow water equivalent (SWE) is critical information for hydrological studies over northern latitudes. This information is needed to adequately simulate spring runoff in order to optimize hydropower generation. In this paper, a new geophysical inversion methodology for monitoring SWE evolution on a daily basis is presented. The methodology is based on a modified version of the Helsinki Universit...

Journal: :The British journal of nutrition 2011
S G Leonard T Sweeney B Bahar B P Lynch J V O'Doherty

A 2x2 factorial experiment (ten sows per treatment) was conducted to investigate the effect of maternal dietary supplementation with a seaweed extract (SWE; 0 v. 10·0 g/d) and fish oil (FO; 0 v. 100 g/d) inclusion from day 109 of gestation until weaning (day 26) on pig performance post-weaning (PW) and intestinal morphology, selected microflora and immune status of pigs 9 d PW. The SWE containe...

2016
Edward H. Bair Karl Rittger Jeff Dozier Robert E. Davis

We present scientific and computing improvements to our new reconstruction model compared to a previous model. Snow water equivalent (SWE) reconstruction involves building a snowpack up in reverse, from melt out to peak SWE, given estimates of melt energy and fractional snow covered area (fSCA). The model was initially tested at an energy balance site on Mammoth Mountain, near the Upper Tuolumn...

2011
C. J. Farmer T. A. Nelson C. Derksen

Snow cover is often measured as snow water equivalent (SWE), which refers to the amount of water stored in a snow-pack that would be available upon melting. Snow cover and SWE represent the source of local snow melt release, and are sensitive to regional and global atmospheric circulation, and changes in climate. Monitoring SWE using satellite-based passive microwave radiometry has provided nea...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده مهندسی عمران 1390

آب به عنوان یک نیاز حیاتی در جوامع انسانی از جایگاه ویژه ی برخوردار می باشد، به نحوی که امروزه به دلیل گسترش جوامع انسانی و افزایش برداشت از منابع آب در تامین این مهم، مشکلات متعددی ایجاد شده است. در این راستا پیش بینی مناسب از جریان رودخانه و ورودی به مخازن حائز اهمیت می باشد. آب معادل برف به عنوان پارامتر اصلی نشان دهنده ذخیره برفی، در مدل های پیش بینی جریان های رودخانه نقش مهمی دارد. از این...

2017
Ji Hyun Youk Hye Mi Gweon Eun Ju Son

Shear-wave elastography (SWE) is a recently developed ultrasound technique that can visualize and measure tissue elasticity. In breast ultrasonography, SWE has been shown to be useful for differentiating benign breast lesions from malignant breast lesions, and it has been suggested that SWE enhances the diagnostic performance of ultrasonography, potentially improving the specificity of conventi...

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