Results 81 to 90 of about 2,920,675 (338)

SPDC-YOLO: An Efficient Small Target Detection Network Based on Improved YOLOv8 for Drone Aerial Image

Remote Sensing
Target detection in UAV images is of great significance in fields such as traffic safety, emergency rescue, and environmental monitoring. However, images captured by UAVs usually have multi-scale features, complex backgrounds, uneven illumination, and ...
Jingxin Bi, Keda Li, Xiangyue Zheng, Gang Zhang, Tao Lei   +4 more
doaj   +1 more source

The ERIS adaptive optics system [PDF]

SPIE Proceedings, 2016
ERIS is the new AO instrument for VLT-UT4 led by a Consortium of Max-Planck Institut fuer Extraterrestrische Physik, UK-ATC, ETH-Zurich, ESO and INAF. The ERIS AO system provides NGS mode to deliver high contrast correction and LGS mode to extend high Strehl performance to large sky coverage.
RICCARDI, Armando, ESPOSITO, Simone, AGAPITO, GUIDO, Antichi, J., BILIOTTI, Valdemaro, Blain, C., BRIGUGLIO PELLEGRINO, RUNA ANTONIO, BUSONI, LORENZO, CARBONARO, LUCA, DI RICO, Gianluca, Giordano, C., PINNA, Enrico, PUGLISI, Alfio Timothy, Spanò, P., XOMPERO, MARCO, BARUFFOLO, Andrea, Kasper, M., Egner, S., Suàrez Valles, M., Soenke, C., Downing, M., Reyes, J.   +21 more
openaire   +4 more sources

Escape from TGF‐β‐induced senescence promotes aggressive hallmarks in epithelial hepatocellular carcinoma cells

Molecular Oncology, EarlyView.
Chronic TGF‐β exposure drives epithelial HCC cells from a senescent state to a TGF‐β resistant mesenchymal phenotype. This transition is characterized by the loss of Smad3‐mediated signaling, escape from senescence, enhanced invasiveness and metastatic potential, and upregulation of key resistance modulators such as MARK1 and GRM8, ultimately promoting
Minenur Kalyoncu, Dilara Demirci, Sude Eris, Bengisu Dayanc, Ece Cakiroglu, Merve Basol, Merve Uysal, Gulcin Cakan‐Akdogan, Fang Liu, Mehmet Ozturk, Gökhan Karakülah, Serif Senturk   +11 more
wiley   +1 more source

DNN-based aberration correction in a wavefront sensorless adaptive optics system.

Optics Express, 2019
Existing wavefront sensorless (WFS-less) adaptive optics (AO) generally require a search algorithm that takes lots of iterations and measurements to get optimal results. So the latency is a serious problem in the current WFS-less AO system, especially in
Qinghua Tian, Chenda Lu, Bo Liu, Lei Zhu, Xiaolong Pan, Qi Zhang, Leijing Yang, Feng Tian, X. Xin   +8 more
semanticscholar   +1 more source

Entanglement protection of high-dimensional states by adaptive optics [PDF]

New Journal of Physics, 2018
We theoretically study the potential of adaptive optics (AO) to protect entanglement of high-dimensional photonic orbital-angular-momentum (OAM) states against turbulence-induced phase distortions. We demonstrate that AO is able to reduce crosstalk among
Giacomo Sorelli, N. Leonhard, V. Shatokhin, C. Reinlein, A. Buchleitner   +4 more
semanticscholar   +1 more source

A Reparameterization Feature Redundancy Extract Network for Unmanned Aerial Vehicles Detection

Remote Sensing
In unmanned aerial vehicles (UAVs) detection, challenges such as occlusion, complex backgrounds, motion blur, and inference time often lead to false detections and missed detections.
Shijie Zhang, Xu Yang, Chao Geng, Xinyang Li   +3 more
doaj   +1 more source

Wavefront Restoration Technology of Dynamic Non-Uniform Intensity Distribution Based on Extreme Learning Machine

Sensors, 2021
Non-uniform intensity distribution of laser near-field beam results in the irregular shape of the spot in the wavefront sensor. The intensity of some sub-aperture spots may be too weak to be detected, and the accuracy of wavefront restoration is ...
Haiqi Lin, Xing He, Shuai Wang, Ping Yang   +3 more
doaj   +1 more source

Inhibitor of DNA binding‐1 is a key regulator of cancer cell vasculogenic mimicry

Molecular Oncology, EarlyView.
Elevated expression of transcriptional regulator inhibitor of DNA binding 1 (ID1) promoted cancer cell‐mediated vasculogenic mimicry (VM) through regulation of pro‐angiogenic and pro‐cancerous genes (e.g. VE‐cadherin (CDH5), TIE2, MMP9, DKK1). Higher ID1 expression also increased metastases to the lung and the liver.
Emma J. Thompson, Emma L. Dorward, Kristyn Jurrius, Nathalie Nataren, Markus Tondl, Kay K. Myo Min, Michaelia P. Cockshell, Anahita Fouladzadeh, John Toubia, Mark DeNichilo, Delphine Merino, Claudine S. Bonder   +11 more
wiley   +1 more source

Co-Phase Error Detection for Segmented Mirrors Based on Far-Field Information and Transfer Learning

Photonics
The resolution of a telescope is closely related to its aperture size; however, the aperture of a single primary mirror telescope cannot be indefinitely enlarged due to design and manufacturing constraints.
Kunkun Cheng, Shengqian Wang, Xuesheng Liu, Yuandong Cheng   +3 more
doaj   +1 more source

Chemoresistome mapping in individual breast cancer patients unravels diversity in dynamic transcriptional adaptation

Molecular Oncology, EarlyView.
This study used longitudinal transcriptomics and gene‐pattern classification to uncover patient‐specific mechanisms of chemotherapy resistance in breast cancer. Findings reveal preexisting drug‐tolerant states in primary tumors and diverse gene rewiring patterns across patients, converging on a few dysregulated functional modules. Despite receiving the
Maya Dadiani, Gilgi Friedlander, Gili Perry, Nora Balint‐Lahat, Shlomit Gilad, Dana Morzaev‐Sulzbach, Anjana Shenoy, Noa Bossel Ben‐Moshe, Anya Pavlovsky, Rinat Bernstein‐Molho, Eytan Domany, Iris Barshack, Tamar Geiger, Bella Kaufman, Einav Nili Gal‐Yam   +14 more
wiley   +1 more source