Results 81 to 90 of about 4,315,310 (343)

A Wideband, Four-Element, All-Digital Beamforming System for Dense Aperture Arrays in Radio Astronomy [PDF]

, 2010
Densely-packed, all-digital aperture arrays form a key area of technology development required for the Square Kilometre Array (SKA) radio telescope. The design of real-time signal processing systems for digital aperture arrays is currently a central ...
Adami, Kristian Zarb, Armstrong, Richard P., Jones, Mike E.   +2 more
core  

Radio Properties of Low Redshift Broad Line Active Galactic Nuclei Including Extended Radio Sources

, 2010
We present a study of the extended radio emission in a sample of 8434 low redshift (z < 0.35) broad line active galactic nuclei (AGN) from the Sloan Digital Sky Survey (SDSS).
Antonucci, Bentz, Blandford, Chiaberge, Cirasuolo, D. Michael Crenshaw, Elvis, Fanaroff, Gopal-Krishna, Gopal-Krishna, Gopal-Krishna & Wiita, Greene, Ho, Ivezić, Ivezić, Kaspi, Kaspi, Kawakatu, Laor, Laor, Osterbrock, Paul J. Wiita, Peterson, Rafter, Rafter, Saripalli, Sikora, Spergel, Stephen E. Rafter, White   +29 more
core   +1 more source

Additive Manufacturing of Gradient Stiffness Honeycombs Using Thermoplastic Polyurethane Composite Material Variations

Advanced Engineering Materials, EarlyView.
By combining porous, solid, and carbon fiber‐reinforced thermoplastic polyurethane within a single 3D printed honeycomb structure, this current work achieved precise control over spatial stiffness while ensuring strong interlayer adhesion. The findings demonstrate enhanced energy absorption and densification strain, outperforming traditional uniform ...
Savvas Koltsakidis, Konstantinos Tsongas, Dimitrios Tzetzis   +2 more
wiley   +1 more source

Bioinspired Materials, Designs, and Manufacturing Strategies for Advanced Impact‐Resistant Helmets

Advanced Engineering Materials, EarlyView.
This review explores how bioinspired materials, structures, and manufacturing strategies transform helmet design to achieve enhanced impact resistance. Drawing inspiration from nacre, porcupine quills, beetle exoskeletons, and skull architectures, it highlights advances in auxetic lattices, nanocomposites, and functionally graded foams.
Joseph Schlager, Yi Jin, Mohammad Faruk, Jay Alberts, C. Chase Cao   +4 more
wiley   +1 more source

RANCANG BANGUN SITEM E-RADIO SUARA AL-MANAR UNIVERSITAS MUHAMMADIYAH PONOROGO

Multitek Indonesia, 2019
Penelitian ini mengangkat tema rancang bangun sitem radio online di radio Suara Almanar Ponorogo. Sistem yang di bangun berupa radio streaming menggunakan server edcaststandalone dengan metode satu pc desktop sebagai source client server dan sebagai ...
Didik Riyanto, Ghulam Asrofi Buntoro
doaj   +1 more source

Radio loud AGN and the L_X - \sigma relation of galaxy groups and clusters

, 2008
We use the ROSAT All-Sky Survey to study the X-ray properties of a sample of 625 groups and clusters of galaxies selected from the Sloan Digital Sky Survey.
Akritas, Allen, Anja von der Linden, Bartelmann, Bautz, Becker, Best, Best, Blanton, Boehringer, Bower, Brinkmann, Burns, Böhringer, Böhringer, Chen, Churazov, Churazov, Clarke, Condon, Croston, Croton, Dai, David, Dickey, Edge, Ettori, Fabian, Fabian, Fabian, Girardi, Gitti, Guinevere Kauffmann, Jetha, Jetha, Kang, Katayama, Koester, Ledlow, McNamara, Merloni, Miller, Mulchaey, Nath, Neumann, Nusser, O'Hara, Omma, Ortiz-Gil, P. N. Best, Peres, Raymond, Rizza, Rykoff, Shen, Shimasaku, Shiyin Shen, Simon D. M. White, Tremaine, Voges, Voges, von der Linden, White, Wu, Xue, York   +65 more
core   +1 more source

Chemically Processed Porous V2O5 Thin‐Film Cathodes for High‐Performance Thin‐film Zn‐Ion Batteries

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
This study presents a rapid, cost‐effective chemical method for fabricating porous vanadium oxide thin‐film cathodes, aimed at enhancing charge storage in Zinc‐ion thin‐film batteries. The approach promises high‐performance, safe, and affordable thin‐film batteries, with industrial viability through efficient processing of highly porous cathodes ...
Jingli Luo, Mengjue Cao, Nibagani Naresh, Jnanraj Borah, Shuhui Li, Tianlei Wang, Bimal K. Sarma, Jianfeng Yao, Ivan P. Parkin, Buddha Deka Boruah   +9 more
wiley   +1 more source

Automation of Multi-Class Microscopy Image Classification Based on the Microorganisms Taxonomic Features Extraction

Journal of Imaging
This study presents a unified low-parameter approach to multi-class classification of microorganisms (micrococci, diplococci, streptococci, and bacilli) based on automated machine learning.
Aleksei Samarin, Alexander Savelev, Aleksei Toropov, Aleksandra Dozortseva, Egor Kotenko, Artem Nazarenko, Alexander Motyko, Galiya Narova, Elena Mikhailova, Valentin Malykh   +9 more
doaj   +1 more source

Integrating Social Media in Modern Radio Broadcasting [PDF]

Social Sciences and Education Research Review
Within the contemporary digital media landscape, radio broadcasters increasingly rely on social media platforms to distribute content, amplify audience engagement, and strengthen their brand identities. Therefore both commercial and public radio stations
Davian Vlad
doaj   +1 more source

Beam loading

, 2013
We begin by giving a description of the radio-frequency generator-cavity-beam coupled system in terms of basic quantities. Taking beam loading and cavity detuning into account, expressions for the cavity impedance as seen by the generator and as seen by ...
Gamp, Alexander
core   +1 more source