228 research outputs found
Quasilocal Smarr relation for an asymptotically flat spacetime
A quasilocal Smarr relation is obtained from Euler's theorem for
Einstein-Maxwell(-Dilaton) theory for an asymptotically flat spacetime, and its
associated first law is studied. To check both, we calculate quasilocal
variables by employing Brown-York quasilocal method along with Mann-Marolf
counterterms, which are consistent with Tolman temperature. We also derive
entropy by constructing a quasilocal thermodynamic potential via Euclidean
method. Here we found that the Euclidean action value in a quasilocal frame
just yields a usual thermodynamic potential form, which do not include a
term, and entropy just becomes the Bekenstein-Hawking one. Through the
examples, we confirmed that our quasilocal Smarr relation is satisfied with all
cases, and its first law is also exactly satisfied except the dyonic black hole
with the dilaton coupling constant . In that case when making a
large expansion, the first law is satisfied up to order but it does
not hold for higher sub-leading order of . This issue should be resolved in
future.Comment: 24 page
Holographic duals of M5-branes on an irregularly punctured sphere
We provide explicit holographic duals of M5-branes wrapped on a sphere with one irregular puncture and one regular puncture of arbitrary type. The solutions generalise the solutions corresponding to M5-branes wrapped on a disc recently constructed by Bah-Bonetti-Minasian-Nardoni by allowing for a general choice of regular puncture. We show that the central charges, flavour central charges and conformal dimensions of BPS operators match with a class of Argyres-Douglas theory
Maternal satisfaction towards intrapartum care of designated healthcare facilities and its associated factors among postnatal women attending Klinik Kesihatan Salak
Introduction: The World Health Organization recommends evaluation of maternal satisfaction to improve quality of health care during childbirth. Dissatisfaction may lead to undesired outcomes such as unassisted homebirth and delay in seeking treatment. Determining the maternal satisfaction level and its associated factors may help to improve health care services and prevent negative implications to both mothers and infants. This study aimed to determine the maternal satisfaction towards intrapartum care of designated healthcare facilities and its associated factors among postnatal women. Methods: This was a cross-sectional study of postnatal women attended Klinik Kesihatan Salak from December 2017 to February 2018. Systematic random sampling with the ratio of 1:3 was applied to the eligible respondents. A self-administered questionnaire that include respondent’s socio-demographic characteristics and a validated 14-items Maternal Satisfaction with Hospital-based Intrapartum Care Scale was used. Data was analyzed using SPSS 23. Results: 274 respondents were recruited in this study. Overall, only 21.2% of respondents were satisfied with the intrapartum care given. The level of satisfaction was highest in interpersonal care domain (36.1%), followed by physical birth environment (34.3%) and the least satisfied was information and decision making domain (27.7%). Binary logistic regression showed that maternal satisfaction was significantly associated with place of birth (AOR (95% CI): 0.046 (0.183, 0.984)) and labour complications (AOR (95% CI): 3.387 (1.345, 8.528)). Conclusion: The overall maternal satisfaction towards intrapartum care was low and the information and decision-making domain appeared to be the least satisfied. Maternal satisfaction was associated with place of birth and labour complications. Therefore, health care providers should emphasize and improve the quality of services especially for this domain and to consider factor that contribute to dissatisfaction towards the intrapartum care
Thermodynamics of accelerating AdS black holes from the covariant phase space
We study the charges and first law of thermodynamics for accelerating,
non-rotating black holes with dyonic charges in AdS using the covariant
phase space formalism. In order to apply the formalism to these solutions
(which are asymptotically locally AdS and admit a non-smooth conformal boundary
) we make two key improvements: 1) We relax the requirement to
impose Dirichlet boundary conditions and demand merely a well-posed variational
problem. 2) We keep careful track of the codimension-2 corner term induced by
the holographic counterterms, a necessary requirement due to the presence of
"cosmic strings" piercing . Using these improvements we are able
to match the holographic Noether charges to the Wald Hamiltonians of the
covariant phase space and derive the first law of black hole thermodynamics
with the correct "thermodynamic length'' terms arising from the strings. We
investigate the relationship between the charges imposed by supersymmetry and
show that our first law can be consistently applied to various classes of
non-supersymmetric solutions for which the cross-sections of the horizon are
spindles.Comment: 42 pages, 1 figur
Symmetry Breaking and Consistent Truncations from M5-branes Wrapping a Disc
We construct new supersymmetric solutions corresponding to M5-branes wrapped
on a topological disc by turning on additional scalars in the background. The
presence of such scalar fields breaks one of the U(1) isometries of the
internal space, explicitly realising the breaking by the Stuckelberg mechanism
observed previously. In addition, we construct a consistent truncation of
maximal seven-dimensional gauged supergravity on the disc to five-dimensional
Romans' SU (2) x U(1) gauged supergravity, allowing us to construct a plethora
of new supergravity solutions corresponding to more general states in the dual
SCFTs as well as solutions corresponding to M5-branes wrapping four-dimensional
orbifolds.Comment: 27 pages + appendices, 4 figure
Symmetry breaking and consistent truncations from M5-branes wrapping a disc
We construct new supersymmetric solutions corresponding to M5-branes wrapped on a topological disc by turning on additional scalars in the background. The presence of such scalar fields breaks one of the U(1) isometries of the internal space, explicitly realising the breaking by the Stückelberg mechanism observed previously. In addition, we construct a consistent truncation of maximal seven-dimensional gauged supergravity on the disc to five-dimensional Romans’ SU(2) × U(1) gauged supergravity, allowing us to construct a plethora of new supergravity solutions corresponding to more general states in the dual SCFTs as well as solutions corresponding to M5-branes wrapping four-dimensional orbifolds
Holographic duals of Higgsed
We construct the AdS holographic duals to all non-Lagrangian 4d
superconformal field theories of Argyres--Douglas type, namely,
, arising from class of classical type
involving irregular punctures of regular semi-simple type. The 11d supergravity
duals contain an internal space of the form of a fibered product of a disc with
a squashed and fibered four-sphere and includes orbifold projections which
depend on the type of twist lines/outer-automorphism twists in the class
theory. We verify the holographic duality by determining and
matching the anomalies (including the central charges and and the
flavor central charges) at leading and subleading orders. The Higgs branch of
the conformal field theory is described via Higgsing by a nilpotent orbit of a
classical Lie algebra; we find the exact closed form formulae for the central
charges for every Higgsing. We prove that in the supergravity duals,
constraints on the type of partitions associated to allowable Higgsings are
enforced by the consistency condition known as the t-rule.Comment: 49 pages + reference
Symmetry breaking and consistent truncations from m5-branes wrapping a disc
We construct new supersymmetric solutions corresponding to M5-branes wrapped on a topological disc by turning on additional scalars in the background. The presence of such scalar fields breaks one of the U(1) isometries of the internal space, explicitly realising the breaking by the Stuckelberg mechanism observed previously. In addition, we construct a consistent truncation of maximal seven-dimensional gauged supergravity on the disc to five-dimensional Romans' SU (2) x U(1) gauged supergravity, allowing us to construct a plethora of new supergravity solutions corresponding to more general states in the dual SCFTs as well as solutions corresponding to M5-branes wrapping four-dimensional orbifolds
Factors influencing implementation of a patient decision aid in a developing country: an exploratory study
Background: Most studies on barriers and facilitators to implementation of patient decision aids (PDAs) are conducted in the west; hence, the findings may not be transferable to developing countries. This study aims to use a locally developed insulin PDA as an exemplar to explore the barriers and facilitators to implementing PDAs in Malaysia, an upper middle-income country in Asia. Methods: Qualitative methodology was adopted. Nine in-depth interviews (IDIs) and three focus group discussions (FGDs) were conducted with policymakers (n = 6), medical officers (n = 13), diabetes educators (n = 5) and a nurse, who were involved in insulin initiation management at an academic primary care clinic. The interviews were conducted with the aid of a semi-structured interview guide based on the Theoretical Domains Framework. The interviews were audio-recorded, transcribed verbatim and analyzed using a thematic approach. Results: Five themes emerged, and they were lack of shared decision-making (SDM) culture, role boundary, lack of continuity of care, impact on consultation time and reminder network. Healthcare providers’ (HCPs) paternalistic attitude, patients’ passivity and patient trust in physicians rendered SDM challenging which affected the implementation of the PDA. Clear role boundaries between the doctors and nurses made collaborative implementation of the PDA challenging, as nurses may not view the use of insulin PDA to be part of their job scope. The lack of continuity of care might cause difficulties for doctors to follow up on insulin PDA use with their patient. While time was the most commonly cited barrier for PDA implementation, use of the PDA might reduce consultation time. A reminder network was suggested to address the issue of forgetfulness as well as to trigger interest in using the PDA. The suggested reminders were peer reminders (i.e. HCPs reminding one another to use the PDA) and system reminders (e.g. incorporating electronic medical record prompts, displaying posters/notices, making the insulin PDA available and visible in the consultation rooms). Conclusions: When implementing PDAs, it is crucial to consider the healthcare culture and system, particularly in developing countries such as Malaysia where concepts of SDM and PDAs are still novel
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