نتایج جستجو برای: 072 rmse and

تعداد نتایج: 16829877  

2013
Paulos Teckle Helen McTaggart-Cowan Kim Van der Hoek Stephen Chia Barb Melosky Karen Gelmon Stuart Peacock

OBJECTIVE To help facilitate economic evaluations of oncology treatments, we mapped responses on cancer-specific instrument to generic preference-based measures. METHODS Cancer patients (n = 367) completed one cancer-specific instrument, the FACT-G, and two preference-based measures, the EQ-5D and SF-6D. Responses were randomly divided to form development (n = 184) and cross-validation (n = 1...

Journal: :Remote Sensing 2016
Zhenwang Li Jianghao Wang Huan Tang Chengquan Huang Fan Yang Baorui Chen Xu Wang Xiaoping Xin Yong Ge

Leaf area index (LAI) is a key parameter used to describe vegetation structures and is widely used in ecosystem biophysical process and vegetation productivity models. Many algorithms have been developed for the estimation of LAI based on remote sensing images. Our goal was to produce accurate and timely predictions of grassland LAI for the meadow steppes of northern China. Here, we compare the...

Journal: :Gait & posture 2016
Carina Price Daniel Parker Christopher Nester

In-shoe pressure measurement devices are used in research and clinic to quantify plantar foot pressures. Various devices are available, differing in size, sensor number and type; therefore accuracy and repeatability. Three devices (Medilogic, Tekscan and Pedar) were examined in a 2 day×3 trial design, quantifying insole response to regional and whole insole loading. The whole insole protocol ap...

2014
Wilson V. C. Wong Satoshi Tsuyuki Keiko Ioki Mui-How Phua

Shuttle Radar Topographic Mission (SRTM) and ASTER Global Digital Elevation Model (GDEM) provide topographic data in a global scale which are freely available for users. The potential use of these datasets for many forestry applications is highly depending on the accuracy of the datasets. In this study, we evaluated the accuracy of SRTM and ASTER GDEM version 2 with high accuracy topographic da...

Journal: :Remote Sensing 2015
Xiliang Ni Yuke Zhou Chunxiang Cao Xuejun Wang Yuli Shi Taejin Park Sungho Choi Ranga B. Myneni

Spatially-detailed forest height data are useful to monitor local, regional and global carbon cycle. LiDAR remote sensing can measure three-dimensional forest features but generating spatially-contiguous forest height maps at a large scale (e.g., continental and global) is problematic because existing LiDAR instruments are still data-limited and expensive. This paper proposes a new approach bas...

Journal: :Remote Sensing 2018
Edward Salameh Frédéric Frappart Vincent Marieu Alexandra Spodar Jean-Paul Parisot Vincent Hanquiez Imen Turki Benoit Laignel

Radar altimetry was initially designed to measure the marine geoid. Thanks to the improvement in the orbit determination from the meter to the centimeter level, this technique has been providing accurate measurements of the sea surface topography over the open ocean since the launch of Topex/Poseidon in 1992. In spite of a decrease in the performance over land and coastal areas, it is now commo...

Journal: :Remote Sensing 2012
Francesco Vuolo Jadunandan Dash Paul J. Curran Dulce Lajas Ewa J. Kwiatkowska

A methodology is described for the validation of Medium Resolution Imaging Spectrometer (MERIS) Terrestrial Chlorophyll Index (MTCI) data over heterogeneous land surfaces in an agricultural region in Southern Italy. The approach involves the use inverse canopy reflectance modeling techniques to derive maps of canopy chlorophyll content (CCC) and leaf area index (LAI) at fine spatial resolution....

2014
Xiyuan Chen Xiying Wang Yuan Xu

This paper deals with the problem of state estimation for the vector-tracking loop of a software-defined Global Positioning System (GPS) receiver. For a nonlinear system that has the model error and white Gaussian noise, a noise statistics estimator is used to estimate the model error, and based on this, a modified iterated extended Kalman filter (IEKF) named adaptive iterated Kalman filter (AI...

2015
Kristina M. McNyset Carol J. Volk Chris E. Jordan Jun Xu

Although water temperature is important to stream biota, it is difficult to collect in a spatially and temporally continuous fashion. We used remotely-sensed Land Surface Temperature (LST) data to estimate mean daily stream temperature for every confluence-to-confluence reach in the John Day River, OR, USA for a ten year period. Models were built at three spatial scales: site-specific, subwater...

Journal: :Kidney international 2005
Susan R Mendley Nancy L Majkowski Dale A Schoeller

BACKGROUND Current K-DOQI recommendations call for an assessment of dialysis adequacy that depends critically on an estimate of total body water (TBW). Such estimates are problematic in children since the range of patient size is large, and often formulas derived in normals are not validated in end-stage renal disease. Gold standard methods of TBW measurement, such as deuterium dilution ((2)H(2...

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