Results 81 to 90 of about 1,235,187 (346)

Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces

Advanced Functional Materials, EarlyView.
A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai, Yi Ning Zheng, Lei Zhang, Xiao Qing Chen, Giuseppe Castaldi, Tie Jun Cui, Vincenzo Galdi   +6 more
wiley   +1 more source

An Adaptive Fading CKF-Based Strapdown Rotating Projectile Line-of-Sight Rate Filtering Algorithm [PDF]

Hangkong bingqi
In response to the strong coupling between line-of-sight angular rate and attitude error in the output of the strapdown rotating projectile, a method based on adaptive fading volume covariance Kalman filtering (AFCKF) is proposed.
Xia Shuhan, Fan Junfang, Ji Yi, Wang Wei, Chen Shiwei, Ma Qiancai
doaj   +1 more source

Wireless sensor indoor positioning based on an improved particle filter algorithm

International Journal of Distributed Sensor Networks, 2020
Positioning by wireless sensor network is one of its main functions and has been widely used in many fields. However, when signal propagation is hindered, serious errors, non-line-of-sight errors, occur.
Pan Feng, Danyang Qin, Guangchao Xu, Ruolin Guo, Min Zhao   +4 more
doaj   +1 more source

Constraints on the relative sizes of intervening Mg II-absorbing clouds and quasar emitting regions

, 2012
Context: A significantly higher incidence of strong (rest equivalent width W_r > 1 {\AA}) intervening Mg II absorption is observed along gamma-ray burst (GRB) sight-lines relative to those of quasar sight-lines.
Hjorth, Jens, Lawther, Daniel, Malesani, Daniele, Paarup, Troels, Schmidt, Morten, Vestergaard, Marianne   +5 more
core   +1 more source

Precise Control of Drug Release in Machine Learning‐Designed Antibody‐Eluting Implants for Postoperative Scarring Inhibition in Glaucoma

Advanced Healthcare Materials, EarlyView.
We developed a micro‐sized, biocompatible implant for postoperative sustained delivery of anti‐fibrotic antibodies in glaucoma surgery. Machine learning‐guided optimization of polymer composition, implant geometry, and porosity enabled precise control of drug release.
Mengqi Qin, Wenbing Jiang, Kai Xin Thong, Zeynep Ulker, Brihitejas Patel, Cynthia Yu‐Wai‐Man   +5 more
wiley   +1 more source

A Correlation Between Hard Gamma-ray Sources and Cosmic Voids Along the Line of Sight

, 2014
We estimate the galaxy density along lines of sight to hard extragalactic gamma-ray sources by correlating source positions on the sky with a void catalog based on the Sloan Digital Sky Survey (SDSS).
Dominguez, A., Furniss, A., Primack, J. R., Sutter, P. M.   +3 more
core   +2 more sources

Position and Orientation Estimation through Millimeter Wave MIMO in 5G Systems [PDF]

, 2017
Millimeter wave signals and large antenna arrays are considered enabling technologies for future 5G networks. While their benefits for achieving high-data rate communications are well-known, their potential advantages for accurate positioning are largely
Destino, Giuseppe, Garcia, Gabriel E., Seco-Granados, Gonzalo, Shahmansoori, Arash, Wymeersch, Henk   +4 more
core   +3 more sources

3D Printing Strategies for Bioengineering Human Cornea

Advanced Healthcare Materials, EarlyView.
This review highlights recent progress in 3D bioprinting strategies for engineering human corneas. Key aspects include the replication of corneal transparency, curvature, and biomechanical properties, alongside innovations in recent advancements in 3D printing methods, which benefit in overcoming current challenges.
Yunong Yuan, Khoon S. Lim, Gerard Sutton, Gordon G. Wallace, Jingjing You   +4 more
wiley   +1 more source

Precession during merger 1: Strong polarization changes are observationally accessible features of strong-field gravity during binary black hole merger

, 2013
The short gravitational wave signal from the merger of compact binaries encodes a surprising amount of information about the strong-field dynamics of merger into frequencies accessible to ground-based interferometers.
Healy, J., London, L., O'Shaughnessy, R., Shoemaker, D.   +3 more
core   +1 more source

Intervening BLR Clouds' Effects on Optical/UV Spectrum [PDF]

, 2012
Recent x-ray observations of Mrk 766 suggest that broad emission line region clouds cross our line of sight and produce variable x-ray absorption. Here we investigate what optical/ultraviolet spectroscopic features would be produced by such "Intervening ...
Arav, Arav, Baldwin, Bentz, Bianchi, Bianchi, Bregman, Chen Hu, Dunn, Elvis, Ferland, Ferland, Ferland, Ferland, Francis, Gary J. Ferland, Gaskell, Gaskell, Hu, Hu, Jian-Min Wang, Korista, Korista, Korista, Mathews, Nardini, Osterbrock, Osterbrock, Osterbrock, Peterson, Pu Du, Puccetti, Ralchenko, Rines, Risaliti, Risaliti, Risaliti, Risaliti, Shakura, Shang, Shields, Smith, Vasudevan, Wang, Wang, Wang, Wang, Ye Wang, Zheng   +48 more
core   +3 more sources