Results 61 to 70 of about 315,996 (341)
Threshold quantile autoregressive models [PDF]
, 2009 We study in this article threshold quantile autoregressive processes. In particular we propose estimation and inference of the parameters in nonlinear quantile processes when the threshold parameter defining nonlinearities is known for each quantile, and
Galvao Jr, A. F. +2 more
core
Multimodal Data‐Driven Microstructure Characterization
Advanced Engineering Materials, EarlyView.A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang +4 more
wiley +1 more source
Robust Truncated Statistics Constant False Alarm Rate Detection of UAVs Based on Neural Networks
DronesWith the rapid popularity of unmanned aerial vehicles (UAVs), airspace safety is facing tougher challenges, especially for the identification of non-cooperative target UAVs.
Wei Dong, Weidong Zhang
doaj +1 more source
Asymptotic fisher information in order statistics of geometric distribution [PDF]
Iranian Journal of Numerical Analysis and Optimization, 2009 In this paper, the geometric distribution is considered. The means, variances, and covariances of its order statistics are derived. The Fisher information in any set of order statistics in any distribution can be represented as a sum of Fisher ...
M. Roozbeh, S. M. M. Tabatabaey
doaj +1 more source
Journal of the American Statistical Association, 2002 This article studies the estimation of conditional quantiles of counts. Given the discreteness of the data, some smoothness must be artificially imposed on the problem. We show that it is possible to smooth the data in a way that allows inference to be performed using standard quantile regression techniques.
Machado, Jose A F +1 more
openaire +5 more sources
Advanced Science, EarlyView.Aldosterone‐producing adenomas (APAs) develop via two distinct paths: directly from adrenal zona glomerulosa (zG) cells, or stepwise from zG cells through aldosterone‐producing micronodules (APMs) before progressing to APAs. Advanced single‐cell and spatial analyses identified distinct cell states linked to oxidative stress and cell–cell interactions ...
Zhuolun Sun +7 more
wiley +1 more source
Effect of blended teaching on college students' EFL acquisition
Frontiers in EducationThe research into the efficacy of blended EFL (English as a Foreign Language) teaching at the collegiate level holds significant importance for comprehending and implementing this novel pedagogical approach on a larger scale within universities.
Yanan Tao +3 more
doaj +1 more source
Using bootstrap fourier granger causality test in quantiles to re-examine Pollution Haven/Halo hypotheses in China and G3 countries [PDF]
PanoeconomicusWe re-examine the Pollution Haven and Pollution Halo hypotheses (PHEH and PHALH) using a quantile-based Bootstrap Fourier Granger causality test, a method adept at identifying non-linear structural breaks. Our study encompasses data from China and the G3
Chang Tsangyao +2 more
doaj +1 more source
Generic inference on quantile and quantile effect functions for discrete outcomes [PDF]
, 2016 Quantile and quantile effect functions are important tools for descriptive and inferential analysis due to their natural and intuitive interpretation. Existing inference methods for these functions do not apply to discrete random variables.
Chernozhukov, Victor +3 more
core +1 more source
Advanced Science, EarlyView.Mid‐infrared optoacoustic microscopy (MiROM) acquires lipid‐ and protein‐ associated vibrational contrast in intact fat tissue without dyes, preserving native tissue architecture. Through lateral and axial segmentation, MiROM tracks intrinsic intracellular changes during postnatal remodeling. A quantitative spatial analysis tool (Q‐SAT) maps white‐ and
Myeongseop Kim +7 more
wiley +1 more source