Results 21 to 30 of about 373,972 (292)

A sampling strategy for assessing habitat coverage at a broad spatial scale

open access: yesEcological Indicators, 2022
The quantitative assessment of habitat conservation status is a major task for European Union member states in compliance with Council Directive 92/43. One goal of the European 2030 Biodiversity Strategy is the effective management of habitats that show ...
Lorenzo Fattorini   +5 more
doaj   +1 more source

Conditional Estimation in Two-Stage Adaptive Designs [PDF]

open access: yesBiometrics, 2017
Summary We consider conditional estimation in two-stage sample size adjustable designs and the consequent bias. More specifically, we consider a design which permits raising the sample size when interim results look rather promising, and which retains the originally planned sample size when results look very promising.
Broberg, Per, Miller, Frank
openaire   +4 more sources

Off-Grid DoA Estimation via Two-Stage Cascaded Neural Network

open access: yesEnergies, 2021
This paper introduces an off-grid DoA estimation via two-stage cascaded network which can resolve a mismatch between true direction-of-arrival (DoA) and discrete angular grid.
Hyeonjin Chung   +4 more
doaj   +1 more source

Two-Stage Fast DOA Estimation Based on Directional Antennas in Conformal Uniform Circular Array

open access: yesSensors, 2021
In conformal array radar, due to the directivity of antennas, the responses of the echo signals between different antennas are distinct, and some antennas cannot even receive the target echo signal.
Yao Xie   +4 more
doaj   +1 more source

A Vision-Based Two-Stage Framework for Inferring Physical Properties of the Terrain

open access: yesApplied Sciences, 2020
The friction and stiffness properties of the terrain are very important pieces of information for mobile robots in motion control, dynamics parameter adjustment, trajectory planning, etc.
Yunlong Dong   +5 more
doaj   +1 more source

Threshold Value Estimation Using Adaptive Two-Stage Plans in R

open access: yesJournal of Statistical Software, 2015
This paper introduces the R package twostageTE for estimation of an inverse regression function at a given point when one can sample an explanatory covariate at different values and measure the corresponding responses.
Shawn Mankad   +2 more
doaj   +1 more source

Two Stage Small Area Estimation [PDF]

open access: yesKorean Journal of Applied Statistics, 2012
When Binomial data are obtained, logit and logit mixed models are commonly used for small area estimation. Those models are known to have good statistical properties through the use of unit level information; however, data should be obtained as area level in order to use area level information such as spatial correlation or auto-correlation.
Sang-Eun Lee, Key-Il Shin
openaire   +1 more source

Two-Stage Nested Array Direction of Arrival Estimation for Mixed Signals

open access: yesSensors, 2022
In this paper, a novel two-stage subspace-based direction of arrival (DOA) estimation algorithm with the nested array is proposed for mixed signals containing circular and non-circular ones.
Wanru Li, Ke Deng
doaj   +1 more source

Two Stage Particle Filter for Nonlinear Bayesian Estimation

open access: yesIEEE Access, 2018
The past several decades have witnessed the successful application of sequential Monte Carlo method (or particle filter) to a variety of fields. It has grown to be a popular method in solving different kinds of nonlinear Bayesian estimation problems ...
Fasheng Wang   +3 more
doaj   +1 more source

On Two-Stage Non-Parametric Estimation [PDF]

open access: yesThe Annals of Mathematical Statistics, 1963
Abstract : A two-sample, two-stage non-parametric estimation problem is studied. The parameter phi phi(F, G) under consideration is estimable (i.e., there exists an unbiased estimator which is a function of independent observations from two populations with cumulative distribution functions F(X) and G(Y). (Hence, it is called a two-sample problem.) The
openaire   +3 more sources

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