1,184 research outputs found
Signatures of the disk-jet coupling in the Broad-line Radio Quasar 4C+74.26
Here we explore the disk-jet connection in the broad-line radio quasar
4C+74.26, utilizing the results of the multiwavelength monitoring of the
source. The target is unique in that its radiative output at radio wavelengths
is dominated by a moderately-beamed nuclear jet, at optical frequencies by the
accretion disk, and in the hard X-ray range by the disk corona. Our analysis
reveals a correlation (local and global significance of 96\% and 98\%,
respectively) between the optical and radio bands, with the disk lagging behind
the jet by days. We discuss the possible explanation for this,
speculating that the observed disk and the jet flux changes are generated by
magnetic fluctuations originating within the innermost parts of a truncated
disk, and that the lag is related to a delayed radiative response of the disk
when compared with the propagation timescale of magnetic perturbations along
relativistic outflow. This scenario is supported by the re-analysis of the
NuSTAR data, modelled in terms of a relativistic reflection from the disk
illuminated by the coronal emission, which returns the inner disk radius
. We discuss the global energetics in
the system, arguing that while the accretion proceeds at the Eddington rate,
with the accretion-related bolometric luminosity erg s , the jet total kinetic energy
erg s, inferred from the dynamical
modelling of the giant radio lobes in the source, constitutes only a small
fraction of the available accretion power.Comment: 9 pages and 6 figures, ApJ accepte
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Child protection training in sport-related degrees amd initial teacher training for physical education: an audit
This article reports on the results of an online survey of child protection training for students on sport-related degrees and Initial Teacher Training Physical Education courses, and on the views of recently-graduated teachers of the usefulness of such training in their everyday work. The results indicate that child protection training is provided on most courses but in varying amounts. Respondents to the survey reported positively, in the main, about the effects of new requirements for teacher training (Every Child Matters: Change for Children, DfES, 2004). Reasons given for not including child protection in courses were: lack of time; the perceived vocational nature of the topic; lack of fit with course aims and objectives; lack of relevance; and, the research rather than professional orientation of the course. Recently graduated teachers’ views on their pre-service child protection training differed from the claims made about this in the survey. In particular, they raised concerns about their lack of preparation for reporting and dealing with potential child protection situations. The paper concludes that child protection training within sport-related higher education courses is deficient in both consistency of delivery and in content, and that, in addition to preparing students to recognise signs and indicators of abuse, curricula should also address undergraduates’ confidence and skills for responding to abuse issues in their everyday professional practice
The Examination of Confidentiality in A School Based Setting
This research study explored the policies and procedures that
education systems abide by, as well as how these policies are enforced to protect the confidentiality of dependent children’s private information from being exposed in their schools to non-relatives and uninvolved parties to their case. Elementary, middle school, and high school faculty’s perception of confidentiality was explored to identify individual competence when working with social workers during their direct contact visit with dependent children on school premises. Data collection included anonymous online surveys of 30-school faculty of various schools in the Southern California. There were no significant findings to support school faculty’s lack of competence of confidentiality protocol when a Department of Children and Family Service social worker conducts a visit on school premises. Future research should involve a qualitative study of school faculty perceptions to gain more accurate and unbiased information from participants
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