نتایج جستجو برای: rmse

تعداد نتایج: 11845  

2009
J. Cristóbal J. C. Jiménez-Muñoz J. A. Sobrino M. Ninyerola X. Pons

[1] Land surface temperature (LST) is involved in many land surface processes such as evapotranspiration, net radiation, or air temperature modeling. In this paper we present an improved methodology to retrieve LST from Landsat 4 TM, Landsat 5 TM, and Landsat 7 ETM+ using four atmospheric databases covering different water vapor ranges (from 0 to 8 g cm ) to build the LST retrieval models and u...

Journal: :Remote Sensing 2017
Jibo Yue Guijun Yang Changchun Li Zhenhai Li Yanjie Wang Haikuan Feng Bo Xu

Correct estimation of above-ground biomass (AGB) is necessary for accurate crop growth monitoring and yield prediction. We estimated AGB based on images obtained with a snapshot hyperspectral sensor (UHD 185 firefly, Cubert GmbH, Ulm, Baden-Württemberg, Germany) mounted on an unmanned aerial vehicle (UAV). The UHD 185 images were used to calculate the crop height and hyperspectral reflectance o...

2010
J. E. Nichol M. L. R. Sarker

No technique has so far been developed to quantify biomass carbon sources and sinks over large areas. Among the remote sensing techniques tested, the use of multisensors, and spatial as well as spectral characteristics of data have demonstrated strong potential for biomass estimation. However, the use of multisensor data accompanied by spatial data processing has not been fully investigated bec...

Journal: :Journal of biomechanics 2007
Carel G M Meskers Michiel A J van de Sande Jurriaan H de Groot

Non-invasive dynamical measurements of 3D scapular motion can be performed easily by attachment of a 6 DOF electromagnetic receiver onto the skin above the acromion. To quantify the introduction of possible errors due to skin displacement, we assessed 3D scapular positions on n=8 subjects by both tripod and skin-fixed method. Error analysis included the variables method (tripod, skin-fixed simu...

Journal: :Remote Sensing 2010
Heikki Laurila Mika Karjalainen Jouko Kleemola Juha Hyyppä

During 1996–2006, the Ministry of Agriculture and Forestry in Finland (MAFF), MTT Agrifood Research and the Finnish Geodetic Institute performed a joint remote sensing satellite research project. It evaluated the applicability of optical satellite (Landsat, SPOT) data for cereal yield estimations in the annual crop inventory program. Four Optical Vegetation Indices models (I: Infrared polynomia...

Journal: :Remote Sensing 2014
Eric Muala Yasir A. Mohamed Zheng Duan Pieter van der Zaag

This paper presents the feasibility of estimating discharges from Roseires Reservoir (Sudan) for the period from 2002 to 2010 and Aswan High Dam/Lake Nasser (Egypt) for the periods 1999–2002 and 2005–2009 using satellite altimetry and imagery with limited in situ data. Discharges were computed using the water balance of the reservoirs. Rainfall and evaporation data were obtained from public dom...

Journal: :Ground water 2015
Yoshitaka Sakata

Depth dependence of permeability can appear in any geologic setting; however, vertical trends in alluvial gravel deposits are poorly understood because of the high variability of hydraulic conductivity K in monotonic sequences. This paper examines the sensitivity of depth-decaying permeability through heat transport simulation around a river's losing reach in the Toyohira River alluvial fan, Ja...

2010
I. Korsakissok

and model’s scores The RMSE improvement presented in the abstract corresponds to the RMSE on stations, given in Section 4. We agree that the model’s performance cannot be summarized by this mild improvement, and we should insist more on the better representation of the spatial variability. As the reviewer states, the results for NO in terms of total RMSE are “surprisingly low” when given in the...

Journal: :Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research 2012
Annie Hawton Colin Green Claire Telford John Zajicek Dave Wright

OBJECTIVES The 29-item Multiple Sclerosis Impact Scale (MSIS-29) is a psychometrically validated patient-reported outcome measure increasingly used in trials of treatments for multiple sclerosis. However, it is non-preference-based and not amenable for use across policy decision-making contexts. Our objective was to statistically map from the MSIS-29, version 2, to the EuroQol five-dimension (E...

Journal: :Remote Sensing 2016
Amy L. Neuenschwander Lori A. Magruder

With a planned launch no later than September 2018, the Ice, Cloud and land Elevation Satellite-2 (ICESat-2) will provide a global distribution of geodetic elevation measurements for both the terrain surface and relative canopy heights. The Advanced Topographic Laser Altimeter System (ATLAS) instrument on-board ICESat-2 is a LiDAR system sensitive to the photon level. The photon-counting techno...

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