Results 1 to 10 of about 2,028,161 (229)

Estimation of Vehicle Dynamic Parameters Based on the Two-Stage Estimation Method [PDF]

open access: yesSensors, 2021
Vehicle dynamic parameters are of vital importance to establish feasible vehicle models which are used to provide active controls and automated driving control. However, most vehicle dynamics parameters are difficult to obtain directly.
Wenfei Li   +5 more
doaj   +3 more sources

Improved two-stage estimation to adjust for treatment switching in randomised trials: g-estimation to address time-dependent confounding. [PDF]

open access: yesStat Methods Med Res, 2020
In oncology trials, control group patients often switch onto the experimental treatment during follow-up, usually after disease progression. In this case, an intention-to-treat analysis will not address the policy question of interest – that of whether ...
Latimer NR   +3 more
europepmc   +2 more sources

Two-stage estimation to adjust for treatment switching in randomised trials: a simulation study investigating the use of inverse probability weighting instead of re-censoring. [PDF]

open access: yesBMC Med Res Methodol, 2019
BackgroundTreatment switching is common in randomised trials of oncology treatments, with control group patients switching onto the experimental treatment during follow-up.
Latimer NR, Abrams KR, Siebert U.
europepmc   +2 more sources

Two-stage and modified two-stage estimation in threshold first-order autoregressive process [PDF]

open access: yesJournal of Mahani Mathematical Research, 2023
In this paper, we discuss the two-stage and the modified two-stage procedures for the estimation of the threshold autoregressive parameter in a first-order threshold autoregressive model (${\rm TAR(1)}$).
soudabe Sajjadipanah   +2 more
doaj   +2 more sources

Two-Stage Estimation of Nonrecursive Choice Models [PDF]

open access: yesPolitical Analysis, 1999
Questions of causation are important issues in empirical research on political behavior. Most of the discussion of the econometric problems associated with multiequation models with reciprocal causation has focused on models with continuous dependent variables (e.g., Markus and Converse 1979; Page and Jones 1979). Yet, many models of political behavior
Alvarez, R. Michael, Glasgow, Garrett
openaire   +3 more sources

Two-Stage Marker Detection–Localization Network for Bridge-Erecting Machine Hoisting Alignment [PDF]

open access: yesSensors
To tackle the challenges of complex construction environment interference (e.g., lighting variations, occlusion, and marker contamination) and the demand for high-precision alignment during the hoisting process of bridge-erecting machines, this paper ...
Lei Li, Zelong Xiao, Taiyang Hu
doaj   +2 more sources

Two Stage Estimation in Semiparametric Model

open access: yesDEStech Transactions on Materials Science and Engineering, 2017
Considering the semi-parametric surveying adjustment models. Firstly, the estimators of parameters and nonparametric are derived by using the kernel function and least square method. Secondly, discuss the approach of bandwidth choice in the semi-parametric surveying adjustment models.
Lihong Jin
openaire   +3 more sources

Estimation of Parameters of Non-stationary Geophysical Signals Based on Two-Stage Approximations Using Local Models

open access: diamondRussian Journal of Earth Sciences
The authors have developed a technology for estimating the parameters of non-stationary geophysical signals, using a two-stage approximation with local approximation models at the first stage and weighted averaging at the second stage.
Getmanov Viktor   +3 more
doaj   +3 more sources

A Registration Algorithm for Astronomical Images Based on Geometric Constraints and Homography

open access: yesRemote Sensing, 2023
The registration of astronomical images, is one of the key technologies to improve the detection accuracy of small and weak targets during astronomical image-based observation.
Bin Lin   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy