Results 51 to 60 of about 8,441 (216)

Radio Detection of Cosmic Ray Extensive Air Showers: present status of the CODALEMA experiment [PDF]

, 2004
Data acquisition and analysis for the CODALEMA experiment, in operation for more than one year, has provided improved knowledge of the characteristics of this new device.
Ardouin, D., Belletoile, A., Charrier, D., Collaboration, the Codalema, Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaiggne, D., Rahmani, A., Ravel, O.   +14 more
core   +8 more sources

Initiation and spread of escape waves within animal groups [PDF]

, 2015
The exceptional reactivity of animal collectives to predatory attacks is thought to be due to rapid, but local, transfer of information between group members. These groups turn together in unison and produce escape waves.
Buhl, Jerome, Herbert-Read, James, Hu, Feng, Sumpter, David, Ward, Ashley   +4 more
core   +2 more sources

GLA-ResUNet: A global-local attention framework for decoding in wavefront coding imaging system [PDF]

AIP Advances
Wavefront coding technology disperses incident laser energy by employing a pupil-phase mask, effectively reducing the energy density on the detector target and enhancing the camera’s anti-laser capability.
Qing Ye, Ye Liu, Yunlong Wu, Jintian Bian, Weibing Sun, Junyu Zhang, Ying Chen, Haoqi Luo   +7 more
doaj   +1 more source

The TIANSHAN Radio Experiment for Neutrino Detection

, 2010
An antenna array devoted to the autonomous radio-detection of high energy cosmic rays is being deployed on the site of the 21 cm array radio telescope in XinJiang, China.
Abraham, Allan, Allan, Apel, Ardouin, Ardouin, Ardouin, Ardouin, Askaryan, Barwick, Bertou, Blümer, Brusova, C. Cârloganu, Carloganu, D. Ardouin, D. Charrier, Falcke, Farebrother, Frichter, Furlanetto, Gora, Gorham, Gorham, Gusev, H. Hu, Horneffer, Huege, Huege, J. Zhang, Kotz, L. Kai, Lamblin, M. Zhao, O. Martineau-Huynh, O. Ravel, P. Lautridou, Q. Gou, Ruben, T. Saugrin, V. Niess, X. Wu, Y. Zhang, Y. Zheng, Zas, Zas, Zheleznykh   +46 more
core   +5 more sources

WISER wavefront propagation simulation code: advances and applications [PDF]

Advances in Computational Methods for X-Ray Optics V, 2020
In this work, we report the advances in the development of WISER. WISER is a wave optics-based simulation library targeted at the simulation of the focusing performance of grazing X-Ray optics systems, which accounts for the metrological data of figure error and roughness power spectral density.
Michele Manfredda, Aljosa Hafner, Simone Gerusina, Nicola Mahne, Alberto Simoncig, Marco Zangrando, Lorenzo Raimondi   +6 more
openaire   +1 more source

Structure Formation in Butterfly Scales: Interplay of Genetic Control, Mechanical Instabilities, and Dynamic Material Properties

Advanced Functional Materials, EarlyView.
Butterfly wing scales are intricate cuticular functional nanosctructures. This perspective suggests that spatially varying material properties, cytoskeletal constraints, and growth‐driven mechanical instabilities shape the resulting nanoscale architectures created from single cells.
Anupama Prakash, Victoria Lloyd, Yi Yang, Anna‐Lee Jessop, Anthony McDougal, Primož Pirih, Guillaume Duclos, Andrew Parnell, Mathias Kolle, Nicola J. Nadeau, Bodo D. Wilts   +10 more
wiley   +1 more source

Research Progress in Information Processing Methods for Computational Optical Systems

Shuju Caiji Yu Chuli
Aberration is a crucial factor that restricts the imaging performance of optical systems， leading to degraded imaging effects such as blurred details and reduced resolution.
SHAO Xiaopeng, DENG Yishuang, CHEN Yutong, ZHANG Yinuo, WANG Huihui, WU Tengfei, WEI Shijie   +6 more
doaj   +1 more source

Deep learning–based vortex decomposition and switching based on fiber vector eigenmodes

Nanophotonics, 2023
Structured optical fields, such as cylindrical vector (CV) and orbital angular momentum (OAM) modes, have attracted considerable attention due to their polarization singularities and helical phase wavefront structure.
Hou Mengdie, Xu Mengjun, Xu Jiangtao, Lu Jiafeng, An Yi, Huang Liangjin, Zeng Xianglong, Pang Fufei, Li Jun, Yi Lilin   +9 more
doaj   +1 more source

Design of High-Performance Scattering Metasurfaces Through Optimization-Based Explicit RCS Reduction

IEEE Access, 2021
The recent advances in the development of coding metasurfaces created new opportunities in realization of radar cross section (RCS) reduction. Metasurfaces, composed of optimized geometries of meta-atoms arranged as periodic lattices, are devised to ...
Slawomir Koziel, Muhammad Abdullah, Stanislaw Szczepanski   +2 more
doaj   +1 more source

Kernel-phases for high-contrast detection beyond the resolution limit

, 2011
The detection of high contrast companions at small angular separation appears feasible in conventional direct images using the self-calibration properties of interferometric observable quantities.
Martinache, Frantz
core   +1 more source