Results 91 to 100 of about 951,439 (281)

Smart Nanotechnologies for Multimodal Neuromodulation and Brain Interfacing

Advanced Science, EarlyView.
Recent advances in smart nanotechnologies are expanding the toolbox for brain interfacing, from wireless neuromodulation and high‐resolution sensing to targeted delivery within the central nervous system. By combining responsive nanomaterials with bioinspired design, these platforms enable multimodal interactions with neurons and glia, while also ...
Tommaso Curiale, Marie Celine Lefevre, Alessio Carmignani, Maria Cristina Ceccarelli, Matteo Battaglini, Attilio Marino, Gianni Ciofani   +6 more
wiley   +1 more source

Non‐Invasively Tracking an Arbitrary Deformable Object Through Scattering Media and Around Corners via Speckle Correlations

Advanced Science, EarlyView.
A speckle correlation centroid localization method (SCCLM) is proposed for non‐invasive tracking of an arbitrary deformable object through scattering media and around corners, requiring no prior information. Its effectiveness is demonstrated not only in tracking hidden objects beyond the memory effect region but also in following objects undergoing ...
Aiping Zhai, Wenjing Ji, Yan Wang, Xiyuan Luo, Wenjing Zhao, Dong Wang, Fei Liu   +6 more
wiley   +1 more source

Ultrawideband Non-Line-of-Sight Classification Using Transformer-Convolutional Neural Networks

IEEE Access
Ultrawideband technology enables high-precision indoor positioning, but its performance degrades significantly in non-line-of-sight environments due to signal obstruction.
Hae-Ji Hwang, Seon-Geun Jeong, Won-Joo Hwang   +2 more
doaj   +1 more source

Non-line-of-sight Node Localization based on Semi-Definite Programming in Wireless Sensor Networks

, 2009
An unknown-position sensor can be localized if there are three or more anchors making time-of-arrival (TOA) measurements of a signal from it. However, the location errors can be very large due to the fact that some of the measurements are from non-line ...
Chen, Hongyang, Lui, Kenneth W. K., Poor, H. Vincent, So, H. C., Wang, Zizhuo   +4 more
core   +2 more sources

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

Enhancing GNSS Localization in Urban Canyons With a Hybrid CNN-Autoencoder Approach to LOS/NLOS Classification

IEEE Access
Non-Line-of-Sight (NLOS) reception is acknowledged as a primary source of positioning error in Global Navigation Satellite System (GNSS) applications, particularly within dense urban settings. When the direct satellite path is obstructed by buildings and
S. Titouni, I. Messaoudene, Y. Himeur, D. W. Dawoud, M. Belazzoug, B. Hammache, F. Chetouah, S. Atalla, W. Mansoor   +8 more
doaj   +1 more source

The height dependence of temperature - velocity correlation in the solar photosphere

, 2007
We derive correlation coefficients between temperature and line-of-sight velocity as a function of optical depth throughout the solar photosphere for the non-magnetic photosphere and a small area of enhanced magnetic activity. The maximum anticorrelation
Koza, J., Kucera, A., Rybák, J., Wöhl, H.   +3 more
core  

The rest-frame ultraviolet properties of radio-loud broad absorption line quasars

, 2012
We recently presented radio observations of a large sample of radio-loud broad absorption line (BAL) quasars from the SDSS and FIRST surveys, as well as a well matched sample of unabsorbed quasars, primarily to measure their radio spectral indices and ...
Allen, Antonucci, Becker, Becker, Becker, Boroson, Boroson, Brotherton, Brotherton, Bruni, Cano-Diaz, Condon, DiPompeo, DiPompeo, DiPompeo, DiPompeo, Elvis, Fanti, Fine, Gallagher, Ganguly, Ganguly, Ghosh, Gibson, Gregg, Gregg, Hall, Hewett, Hopkins, J. C. Runnoe, Jarvis, King, Knigge, Kriss, M. A. DiPompeo, M. S. Brotherton, Montenegro-Montes, Nemmen, O'Dea, Ogle, Peterson, Reichard, Richards, Richards, Runnoe, S. L. Cales, Schlegel, Shen, Silk, Spergel, Stocke, Vestergaard, Vestergaard, Weymann, Zhou   +54 more
core   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Relativistic spin precession in the binary PSR J1141$-$6545

, 2019
PSR J1141$-$6545 is a precessing binary pulsar that has the rare potential to reveal the two-dimensional structure of a non-recycled pulsar emission cone.
Bailes, M., Bhat, N. D. R., Flynn, C., Keane, E. F., Kramer, M., Krishnan, V. Venkatraman, Osłowski, S., van Straten, W.   +7 more
core   +1 more source