1,577 research outputs found
Service user involvement in the evaluation of psycho-social intervention for self-harm: a systematic literature review
Background: The efficacy of interventions and treatments for self-harm is well researched. Previous reviews of the literature have highlighted the lack of definitively effective interventions for self-harm and have highlighted the need for future research. These recommendations are also reflected in clinical guidelines published by the National Institute for Health and Clinical Excellence (NICE, 2004) which also call for service user involvement in studies of treatment efficacy. Aims: A systematic review was undertaken to determine i) what contributions service users have made to the evaluation of psychosocial interventions ii) by what methods have service users been involved iii) in what ways could service user involvement supplement empirical evidence for interventions
A pilot study examining the frequency of adjudication and self-harm incidents across two phases of the Westgate Personality Disorder Treatment Service. Final Report for HMP Frankland
A SCUBA survey of the NGC 2068/2071 protoclusters
We report the results of a submillimeter dust continuum survey of the
protoclusters NGC 2068 and NGC 2071 in Orion B carried out at 850 microns and
450 microns with SCUBA on JCMT. The mapped region is ~ 32' x 18' in size (~ 4
pc x 2 pc) and consists of filamentary dense cores which break up into
small-scale (~ 5000 AU) fragments, including 70 starless condensations and 5
circumstellar envelopes/disks. The starless condensations, seen on the same
spatial scales as protostellar envelopes, are likely to be gravitationally
bound and pre-stellar in nature. Their mass spectrum, ranging from ~ 0.3 Msun
to ~ 5 Msun, is reminiscent of the stellar initial mass function (IMF). Their
mass-size relation suggests that they originate from gravitationally-driven
fragmentation. We thus argue that pre-collapse cloud fragmentation plays a
major role in shaping the IMF.Comment: 6 pages, 4 figures, 1 table. Letter accepted by Astronomy &
Astrophysic
Molecular Tracers of Embedded Star Formation in Ophiuchus
In this paper we analyze nine SCUBA cores in Ophiuchus using the
second-lowest rotational transitions of four molecular species (12CO, 13CO,
C18O, and C17O) to search for clues to the evolutionary state and
star-formation activity within each core. Specifically, we look for evidence of
outflows, infall, and CO depletion. The line wings in the CO spectra are used
to detect outflows, spectral asymmetries in 13CO are used to determine infall
characteristics, and a comparison of the dust emission (from SCUBA
observations) and gas emission (from C18O) is used to determine the fractional
CO freeze-out.
Through comparison with Spitzer observations of protostellar sources in
Ophiuchus, we discuss the usefulness of CO and its isotopologues as the sole
indicators of the evolutionary state of each core. This study is an important
pilot project for the JCMT Legacy Survey of the Gould Belt (GBS) and the
Galactic Plane (JPS), which intend to complement the SCUBA-2 dust continuum
observations with HARP observations of 12CO, 13CO, C18O, and C17O J = 3 - 2 in
order to determine whether or not the cold dust clumps detected by SCUBA-2 are
protostellar or starless objects.
Our classification of the evolutionary state of the cores (based on molecular
line maps and SCUBA observations) is in agreement with the Spitzer designation
for six or seven of the nine SCUBA cores. However, several important caveats
exist in the interpretation of these results, many of which large mapping
surveys like the GBS may be able to overcome to provide a clearer picture of
activity in crowded fields.Comment: 43 pages including 19 postscript figures. Accepted for publication in
the PAS
What is the pattern of self-harm and prison rule-breaking behaviour in personality disordered offenders in a high secure prison?
Purpose – The purpose of this paper is to describe the pattern of self-harm (SH) and proven prison-rule-breaking (PRB) behaviour in prisoners receiving treatment for personality disorders (PDs) within a high secure prison.
Design/methodology/approach – A comparative quantitative case study design supported the understanding of the frequency and pattern of SH and PRB behavior across two stages of a personality disorder (PD) treatment programme for 74 male prisoners. Data obtained from the prison’s records was analysed using dependent t tests, chi square test of independence and time-frequency analyses.
Findings – Inferential statistics showed that the frequency of SH and PRB behaviour statistically increased across two phases of the PD treatment programme, however the method of SH or type of PRB behaviour engaged in did not change. Mapping the frequencies of incidents using a time-frequency analysis shows the patterns of both behaviours to be erratic, peaking in the latter phase of treatment, yet the frequency of incidents tended to decline over time.
Originality/value – This is the first study to explore SH and PRB behaviours in men across two phases of a PD treatment programme. This study highlights the need for continued psychological support alongside the PD treatment programme with a focus on supporting men in treatment to effectively manage their SH and PRB behaviour
S-bearing molecules in Massive Dense Cores
Chemical composition of the massive cores forming high-mass stars can put
some constrains on the time scale of the massive star formation: sulphur
chemistry is of specific interest due to its rapid evolution in warm gas and
because the abundance of sulphur bearing species increases significantly with
the temperature. Two mid-infrared quiet and two brighter massive cores are
observed in various transitions (E_up up to 289K) of CS, OCS, H2S, SO, SO2 and
of their isotopologues at mm wavelengths with the IRAM 30m and CSO telescopes.
1D modeling of the dust continuum is used to derive the density and temperature
laws, which are then applied in the RATRAN code to model the observed line
emission, and to derive the relative abundances of the molecules. All lines,
except the highest energy SO2 transition, are detected. Infall (up to 2.9km/s)
may be detected towards the core W43MM1. The inferred mass rate is 5.8-9.4
10^{-2} M_{\odot}/yr. We propose an evolutionary sequence of our sources
(W43MM1-IRAS18264-1152-IRAS05358+3543-IRAS18162-2048), based on the SED
analysis. The analysis of the variations in abundance ratios from source to
source reveals that the SO and SO2 relative abundances increase with time,
while CS and OCS decrease. Molecular ratios, such as [OCS/H2S], [CS/H2S],
[SO/OCS], [SO2/OCS], [CS/SO] and [SO2/SO] may be good indicators of evolution
depending on layers probed by the observed molecular transitions. Observations
of molecular emission from warmer layers, hence involving higher upper energy
levels are mandatory to include.Comment: 24 pages, accepted for publicatio
Radiative Transfer in Prestellar Cores: A Monte Carlo Approach
We use our Monte Carlo radiative transfer code to study non-embedded
prestellar cores and cores that are embedded at the centre of a molecular
cloud. Our study indicates that the temperature inside embedded cores is lower
than in isolated non-embedded cores, and generally less than 12 K, even when
the cores are surrounded by an ambient cloud of small visual extinction (Av~5).
Our study shows that the best wavelength region to observe embedded cores is
between 400 and 500 microns, where the core is quite distinct from the
background. We also predict that very sensitive observations (~1-3 MJy/sr) at
170-200 microns can be used to estimate how deeply a core is embedded in its
parent molecular cloud. Finally, we present preliminary results of asymmetric
models of non-embedded cores.Comment: 8 pages, 15 figures, to appear in the conference proceedings of "Open
Issues in Local Star Formation and Early Stellar Evolution", held in Ouro
Preto (Brazil), April 5-10, 200
The earliest phases of high-mass star formation: a 3 square degree millimeter continuum mapping of Cygnus X
We have made an extensive 1.2mm continuum mosaicing study of the Cygnus X
molecular cloud complex using the MAMBO cameras at the IRAM 30 m telescope. We
then compared our mm maps with mid-IR images, and have made SiO(2-1) follow-up
observations of the best candidate progenitors of high-mass stars. Our complete
study of Cygnus X provides, for the first time, an unbiased census of massive
young stellar objects. We discover 129 massive dense cores, among which 42 are
probable precursors of high-mass stars. Our study qualifies 17 cores as good
candidates for hosting massive IR-quiet protostars, while up to 25 cores
potentially host high-luminosity IR protostars. We fail to discover the
high-mass analogs of pre-stellar dense cores in CygnusX, but find several
massive starless clumps that might be gravitationally bound. Since our sample
is derived from a single molecular complex and covers every embedded phase of
high-mass star formation, it gives the first statistical estimates of their
lifetime. In contrast to what is found for low-mass class 0 and class I phases,
the IR-quiet protostellar phase of high-mass stars may last as long as their
better-known high-luminosity IR phase. The statistical lifetimes of high-mass
protostars and pre-stellar cores (~ 3 x 10^4 yr and < 10^3 yr) in Cygnus X are
one and two order(s) of magnitude smaller, respectively, than what is found in
nearby, low-mass star-forming regions. We therefore propose that high-mass
pre-stellar and protostellar cores are in a highly dynamic state, as expected
in a molecular cloud where turbulent processes dominate.Comment: 32 pages, 62 figures to be published in Astronomy & Astrophysics
journa
A SCUBA survey of Orion, the low-mass end of the core mass function
We have re-analysed all of the SCUBA archive data of the Orion star-forming
regions. We have put together all of the data taken at different times by
different groups. Consequently we have constructed the deepest submillimetre
maps of these regions ever made. There are four regions that have been mapped:
Orion A North & South, and Orion B North & South. We find that two of the
regions, Orion A North and Orion B North, have deeper sensitivity and
completeness limits, and contain a larger number of sources, so we concentrate
on these two. We compare the data with archive data from the Spitzer Space
Telescope to determine whether or not a core detected in the submillimetre is
pre-stellar in nature. We extract all of the pre-stellar cores from the data
and make a histogram of the core masses. This can be compared to the stellar
initial mass function (IMF). We find the high-mass core mass function follows a
roughly Salpeter-like slope, just like the IMF, as seen in previous work. Our
deeper maps allow us to see that the core mass function (CMF) turns over at ~
1.3 Mo, about a factor of 4 higher than our completeness limit. This turnover
has never previously been observed, and is only visible here due to our much
deeper maps. It mimics the turnover seen in the stellar IMF at ~ 0.1 Mo. The
low-mass side of the CMF is a power-law with an exponent of 0.35 +/- 0.2, which
is consistent with the low-mass slope of the young cluster IMF of 0.3 +/- 0.1.
This shows that the CMF continues to mimic the shape of the IMF all the way
down to the lower completeness limit of these data at ~ 0.3 Mo.Comment: 9 pages, inc. 6 figures (+ Appendix; 1 Table = 6 pages
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