Results 81 to 90 of about 31,048 (205)

Impact of a substance use screening program on racial disparities in urine toxicology testing

Pregnancy, Volume 2, Issue 2, March 2026.
Abstract Objective To evaluate whether implementing a standardized substance use screening program reduced racial disparities in urine toxicology (Utox) testing among delivery admissions. Methods We conducted a retrospective cohort study of delivery admissions at a single academic center from June 2019 to June 2025. To address known disparities in Utox
Mariam Naqvi, Amin Tavakoli, Camelita S. Thrift, Allison Henry, Jennifer Astasio, Farnaaz Kia, Naomi Greene, Sarah J. Kilpatrick   +7 more
wiley   +1 more source

A FPC-ROOT Algorithm for 2D-DOA Estimation in Sparse Array

International Journal of Antennas and Propagation, 2016
To improve the performance of two-dimensional direction-of-arrival (2D DOA) estimation in sparse array, this paper presents a Fixed Point Continuation Polynomial Roots (FPC-ROOT) algorithm.
Wenhao Zeng, Hongtao Li, Xiaohua Zhu, Chaoyu Wang   +3 more
doaj   +1 more source

Toeplitz rectification and DOA estimation with music [PDF]

2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2014
The MUSIC method is widely used in the field of DoA estimation using an array of M sensors, and is known to perform well as long as the number of available samples N is much larger than M. Nevertheless, in the scenario where N is of the same order of magnitude than M, its performance degrades, essentially because the sample covariance matrix (SCM) is ...
Vallet, Pascal, Loubaton, Philippe
openaire   +3 more sources

Multi‐Material Droplet‐Based Hydrogel Threads for Extrusion 3D Printing

Small Methods, Volume 10, Issue 5, 9 March 2026.
This study introduces a novel approach to produce multi‐material threads for 3D printing by precisely arranging hydrogel droplets separated by lipid bilayers. By merging the precision of inkjet printing with the scalability of extrusion printing, this method prevents cross‐contamination, maintains material control, and enables intricate designs ...
Dor Tillinger, Nicholas X. Armendarez, Joseph S. Najem   +2 more
wiley   +1 more source

Research Progress in Methods to Estimate High-resolution Direction of Arrival

水下无人系统学报
With the widespread application of array signal processing, the estimation of direction of arrival(DOA) as the core problem of array signal processing has made significant progress.
Wei ZHAO, Xuan LI, Chengpeng HAO
doaj   +1 more source

Direction-of-arrival estimation under spatial sparse angular and Doppler domains

工程科学学报, 2015
The method of receiving the antenna array vector was proposed under the sparse angle domain and Doppler domain.The direction-of-arrival(DOA) estimation problem in the Doppler frequency domain was discussed to extract the relatively large impulse response
LIU Ting, ZHOU Jie, SHAO Gen-fu
doaj   +1 more source

Multiple and single snapshot compressive beamforming

, 2015
For a sound field observed on a sensor array, compressive sensing (CS) reconstructs the direction-of-arrival (DOA) of multiple sources using a sparsity constraint.
Gerstoft, Peter, Mecklenbräuker, Christoph F., Xenaki, Angeliki   +2 more
core   +2 more sources

Orbiting Carbon Observatory‐3: Preflight Spectral Calibration and Performance Evaluation

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract The Orbiting Carbon Observatory‐3 (OCO‐3) payload was installed on the International Space Station (ISS) in May 2019. OCO‐3 is providing measurements to quantify the column average carbon dioxide dry air mole fraction (XCO2) near the ISS ground track.
R. A. M. Lee, D. Fu, R. A. Rosenberg, G. R. Keller, C. M. Roehl, G. B. Osterman, S. Yu, R. Pollock, C. W. O’Dell, D. Crisp   +9 more
wiley   +1 more source

Small Aperture Antenna Arrays for Direction of Arrival Estimation

Sensors
In this paper, we establish criteria for the design of small aperture antenna arrays for Direction of Arrival (DOA) estimation. We define a small aperture antenna array as one consisting of a few elements with an average interelement spacing less than or
Krutant J. Mehta, Inder J. Gupta
doaj   +1 more source

Incorporating Gas‐Phase Chemistry Into the Unified Forecast System (UFS) for Global Air Quality Applications

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 3, March 2026.
Abstract The Unified Forecast System (UFS) is a community‐based Earth modeling system designed to support operational forecasts at the National Oceanic and Atmospheric Administration (NOAA), while also facilitating the integration of research advances from the broader scientific community.
Jian He, Li Zhang, Rebecca H. Schwantes, Barry Baker, Larry Horowitz, Vaishali Naik, Congmeng Lyu, Zachary Moon, Georg Grell, Ravan Ahmadov, Jordan Schnell, Kai Yang, Zigang Wei, Siyuan Wang, Kai‐Lan Chang, Alan M. Gorchov Negron, Aihua Zhu, Shobha Kondragunta, Eric C. Apel, Ilann Bourgeois, Róisín Commane, Samuel R. Hall, Alan Hills, Rebecca S. Hornbrook, Jeff Peischl, Kirk Ullmann, Gonzalo González Abad, Zolal Ayazpour, Caroline Nowlan, Brian C. McDonald   +29 more
wiley   +1 more source