Results 21 to 30 of about 133,952 (267)

PREDICTION OF DENSITIES BASED ON SCARCE TRAFFIC FLOW INFORMATION

open access: yesHorizons - International Scientific Journal, 2018
Traffic fluctuations are always evident in highways or urban arterial networks that consist of some signalized or unsignalized intersections. Traffic conditions may change as a result of changes in peak timing flows, miscellaneous incidents, variable ...
Arlinda Alimehaj Rrecaj
doaj   +1 more source

Throwing motion design based on minimum sensitivity with respect to error covariance of robot dynamic parameters

open access: yesMechanical Engineering Journal, 2020
Throwing by a powered manipulator is an effective way for wide range transportation of an object and carrying an object in unmanned environments. The main problems of throwing are (i) how far the manipulator can throw the object and (ii) the accuracy of ...
Masafumi OKADA, Takahiro SEKIGUCHI
doaj   +1 more source

The impact of covariate measurement error on risk prediction [PDF]

open access: yesStatistics in Medicine, 2015
In the development of risk prediction models, predictors are often measured with error. In this paper, we investigate the impact of covariate measurement error on risk prediction. We compare the prediction performance using a costly variable measured without error, along with error‐free covariates, to that of a model based on an inexpensive surrogate ...
Khudyakov, Polyna   +3 more
openaire   +4 more sources

Harmonization of Space-Borne Infra-Red Sensors Measuring Sea Surface Temperature

open access: yesRemote Sensing, 2020
Sea surface temperature (SST) is observed by a constellation of sensors, and SST retrievals are commonly combined into gridded SST analyses and climate data records (CDRs).
Christopher J. Merchant   +5 more
doaj   +1 more source

Analysis of the influence of different assimilation experiments of radar data on short-term precipitation forecast

open access: yes暴雨灾害, 2022
Based on the radar data direct assimilation system established by the Chongqing Meteorological Bureau in cooperation with the Center for Analysis and Prediction of Storms of the University of Oklahoma, a set of radar data assimilation and forecasting ...
Jingting HU, Lianglü CHEN, Yu XIA
doaj   +1 more source

Assessing the Quality of Natural Gas Consumption Forecasting: An Application to the Italian Residential Sector

open access: yesEnergies, 2017
(1) Background: The present paper aims at estimating the quality of the forecasts obtained by using one equation models. In particular, the focus is on the effect that the explanatory variables have on the forecasted quantity.
Federico Scarpa, Vincenzo Bianco
doaj   +1 more source

Polar Region Integrated Navigation Method Based on Covariance Transformation

open access: yesApplied Sciences, 2021
Aircraft flying the trans-arctic routes usually apply inertial navigation mechanization in two different navigation frames, e.g., the local geographic frame and the grid frame.
Yongjian Zhang   +3 more
doaj   +1 more source

Covariate Measurement Error in Quadratic Regression

open access: yesInternational Statistical Review, 2003
SummaryWe consider quadratic regression models where the explanatory variable is measured with error. The effect of classical measurement error is to flatten the curvature of the estimated function. The effect on the observed turning point depends on the location of the true turning point relative to the population mean of the true predictor.
Kuha, Jouni, Temple, Jonathan
openaire   +3 more sources

Transformed Fay-Herriot model with measurement error in covariates [PDF]

open access: yesCommunications in Statistics - Simulation and Computation, 2021
Statistical agencies are often asked to produce small area estimates (SAEs) for positively skewed variables. When domain sample sizes are too small to support direct estimators, effects of skewness of the response variable can be large. As such, it is important to appropriately account for the distribution of the response variable given available ...
Sepideh Mosaferi   +2 more
openaire   +2 more sources

Facilitating Inversion of the Error Covariance Models for the Wide-Swath Altimeters

open access: yesRemote Sensing, 2020
Wide-swath satellite altimeter observations are contaminated by errors caused by the uncertainties in the geometry and orientation of the on-board interferometer.
Max Yaremchuk   +2 more
doaj   +1 more source

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