Results 11 to 20 of about 2,842,254 (304)
Radio-Excess IRAS Galaxies: IV. Optical Spectroscopy [PDF]
, 2006 This is the fourth in our series of papers investigating radio-excess galaxies, which have radio emission associated with an active nucleus but which do not fit into the traditional categories of either radio-loud or radio-quiet active galaxies.
Bicknell, Geoffrey V. +3 more
core +3 more sources
Documental sonoro y arte radiofónico
Historia y Comunicación Social, 2021 El artículo propone un análisis histórico del documental sonoro, entendido como género artístico de la radio, con el objetivo de conocer su relación con el arte radiofónico, reconocer características y elementos clave, e identificar su desarrollo más ...
Raúl Rodríguez
doaj +1 more source
Why radio quiet quasars are preferred over radio loud quasars regardless of environment and redshift [PDF]
The Astrophysical Journal 2020, 2020 Evidence has accumulated suggesting the clustering of radio loud quasars is greater than for radio quiet quasars. We interpret these results in a context in which the fraction of radio loud quasar formation is less than or equal to that for radio quiet quasars for all environments and redshift.
arxiv +1 more source
RADIO-LOUD AND RADIO-QUIET QSOs [PDF]
The Astrophysical Journal, 2016 ABSTRACT We discuss 6 GHz JVLA observations covering a volume-limited sample of 178 low-redshift ( ) optically selected quasi-stellar objects (QSOs). Our 176 radio detections fall into two clear categories: (1) about 20% are radio-loud QSOs (RLQs) with spectral luminosities ...
K. I. Kellermann +4 more
openaire +3 more sources
Semi‐supervised classification of fundus images combined with CNN and GCN
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose Diabetic retinopathy (DR) is one of the most serious complications of diabetes, which is a kind of fundus lesion with specific changes. Early diagnosis of DR can effectively reduce the visual damage caused by DR. Due to the variety and different morphology of DR lesions, automatic classification of fundus images in mass screening can ...
Sixu Duan +8 more
wiley +1 more source
Twitter as a public service medium? A content analysis of the Twitter use made by Radio RAI and RNE
Communication & Society (Formerly Comunicación y Sociedad), 2014 Twitter seems to be, among the other social media, one of the best new media for drawing back the audience from internet to radio and to improve the engagement with listeners.
Tiziano Bonini, Toni Sellas
doaj +1 more source
Memoria histórica y radio: escuchando la voz de las mujeres
Documentación de las Ciencias de la Información, 2022 Los medios de comunicación como divulgadores de la memoria histórica tienen en los testimonios orales unas fuentes idóneas para elaborar contenidos de periodismo feminista capaces de reconstruir la memoria de las mujeres.
Carlota Coronado Ruiz +1 more
doaj +1 more source
Radio Emission of Nearby Early-type Galaxies at Low and Very-Low Radio Luminosity Range [PDF]
, 2022 We analyze radio continuum emission of early-type galaxies with dynamical measurements of central super-massive black hole (SMBH) masses, and well-characterized large-scale environments, but regardless on the exact level of the nuclear activity. The 1.4 GHz radio fluxes collected with $\sim$arcmin resolution for 62 nearby targets (distances $\lesssim ...
arxiv +1 more source
The Impact of GSM towers in Radio Astronomy [PDF]
2023 IEEE Radio and Antenna Days of the Indian Ocean (RADIO), 2023 Radio astronomy is a specialised area of astronomy that examines the radio emissions from astronomical bodies within the electromagnetic spectrum's radio range. As radio telescopes have become increasingly sensitive due to technological advancements, radio astronomers face the significant challenge of reducing the impact of human-generated radio ...
arxiv +1 more source
Treatment planning with a 2.5 MV photon beam for radiation therapy
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose The shallow depth of maximum dose and higher dose fall‐off gradient of a 2.5 MV beam along the central axis that is available for imaging on linear accelerators is investigated for treatment of shallow tumors and sparing the organs at risk (OARs) beyond it.
Navid Khaledi +5 more
wiley +1 more source