5 research outputs found
Anisotropic stars in 4D Einstein-Gauss-Bonnet gravity
No full textWe wish to thank the anonymous reviewer for comments and suggestions. The author T. T would like to thank the financial support from the Science Achievement Scholarship of Thailand (SAST) . A. Pradhan thanks to IUCCA, Pune, India for providing fa-cilities under associateship programmes. The author G. P. thanks the FundacAo para a Ciencia e Tecnologia (FCT) , Portugal, for the financial support to the Center for Astrophysics and Gravitation-CENTRA, Chile, Instituto Superior Tecnico, Universidade de Lis-boa, Portugal, through the Project No. UIDB/00099/2020 and No. PTDC/FIS-AST/28920/2017
Black hole shadow of a rotating scale-dependent black hole
No full textIn this work, starting from a spherically symmetric scale-dependent black hole, a rotating solution is obtained by following the Newman–Janis algorithm without complexification. Besides studying the horizon, the static conditions and causality issues of the rotating solution, we get and discuss the shape of its shadow.The author Á. R. acknowledges DI-VRIEA for financial support through Proyecto Postdoctorado VRIEA-PUCV. The author G. P. thanks the Fundação para a Ciência e Tecnologia (FCT), Portugal, for the financial support to the Center for Astrophysics and Gravitation-CENTRA, Instituto Superior T´ecnico, Universidade de Lisboa, through the Project No. UIDB/00099/2020. The author P. B. is founded by the Beatríz Galindo Contract No. BEAGAL 18/00207
Four dimensional Einstein-power-Maxwell black hole solutions in scale-dependent gravity
No full textIn the present work, we extend and generalize our previous work regarding the scale dependence applied to black holes in the presence of non-linear electrodynamics (Rincón et al., 2017). The starting point for this study is the Einstein-power-Maxwell theory with a vanishing cosmological constant in (3+1) dimensions, assuming a scale dependence of both the gravitational and the electromagnetic coupling. We further examine the corresponding thermodynamic properties and how these quantities experience deviations from their classical counterparts. We solve the effective Einstein’s field equations using the “null energy condition” to obtain analytical solutions. The implications of quantum corrections are also briefly discussed. Finally, we analyze our solutions and compare them to related results in the literature.The author A. R. acknowledges DI-VRIEA for financial support through Proyecto Postdoctorado 2019 VRIEA-PUCV. P. B. is funded by the Beatriz Galindo contract BEAGAL 18/00207 (Spain). The author G. P. thanks the Fundação para a Ciência e Tecnologia (FCT), Portugal, for the financial support to the Center for Astrophysics and Gravitation-CENTRA, Instituto Superior Técnico, Universidade de Lisboa , through the Grant No. UID/FIS/00099/2013
Developing Employee Counselling
No full textThe research focused on the counselling service provided by a major national N-1
organisation. The main aim was identification of managerial mechanisms that might
be instituted to facilitate the development of workplace counsellors.It comprised of
three main studies which utilised both quantitative and qualitative methods.
Over a period of eight months,corresponding quantitative data were collected after
each new counselling session from six hundred and ninety-four clients and forty-six
counsellors.In addition, qualitative data in the form of case notes were obtained from
the counsellors, forty-three of whom also completed Levenson's (1981) Locus of
Control questionnaire.
In the first study,quantitative questionnaire data from both clients and counsellors
were analysed in order to investigate discrepancies between the two groups that might
identify a means of focus for managing the service. Statistical exploration of sociodemographic features that might be implicated as potentially confounding variables in
the assessment of counselling effectiveness and client satisfaction was also
undertaken, and the proposition that non-respondents perceive less benefit from the
service was indirectly explored. A dditionally,the relationship between some of the
Rogerian core qualities and client perceptions of benefit was investigated.
In the second study,qualitative data from counsellor notes were examined in order to
establish the type of notes produced and to consider ways in which counsellors might
be encouraged to focus on counselling process rather than content. As a result an
instrument was developed which provides a tool to facilitate counsellor development
within a professional supervisory re lationship, inside or outside of the organisational
context.
The third study was designed to investigate counsellors' own locus of control and
their perceptions of their clients' primary loci. Objectives of the study included
comparison of the two measures and exploration of relationships between locus of
control and other issues of interest to the research such as client perception of benefit
from counselling, perceived use of Rogerian core variables and results on the process
measure.
The findings of the studies and their implications for counsellor development are fully
discussed and suggestions for future research are provided
