882 research outputs found
The Case for Governmental Action to Retard Condominium Conversion Activity
The conversion of rental apartment buildings into individually-owned condominiums has emerged as a common real estate practice in recent years. Since 1970, over one-half million apartments have been converted to condominiums. The pace of conversion activity accelerated throughout the 1970\u27s and remains strong despite high interest rates.Conversion, moreover, is spreading from the nation\u27s largest metropolitan areas into smaller cities
Simulation of the Directional Dark Matter Detector (D3) and Directional Neutron Observer (DiNO)
Preliminary simulation and optimization studies of the Directional Dark
Matter Detector and the Directional Neutron Observer are presented. These
studies show that the neutron interaction with the gas-target in these
detectors is treated correctly by GEANT4 and that by lowering the pressure, the
sensitivity to low-mass WIMP candidates is increased. The use of negative ion
drift might allow us to search the WIMP mass region suggested by the results of
the non-directional experiments DAMA/LIBRA, CoGeNT and CRESST-II.Comment: Proceedings of the 3rd International conference on Directional
Detection of Dark Matter (CYGNUS 2011), Aussois, France, 8-10 June 201
Mental health problems: Are they or are they not a risk factor for dropout from drug treatment? A systematic review of the evidence
Background: A sizeable number of recent studies investigating whether clients with substance misuse and mental health problems (dual diagnosis clients) are at heightened risk of dropout from drug treatment have been published. It is timely that their findings are brought together in a comprehensive review of the current evidence.
Aims: The aim of the review is to examine whether dually diagnosed clients are less likely to be retained in drug treatment than clients without mental health problems, and, if so, whether this varies for clients diagnosed with different types of mental health problems.
Methods: The review considers peer-reviewed research published after 1 January 1990, which was located using the literature databases Medline and PsycInfo. Predefined search terms were used. Further papers were identified from the bibliographies of relevant publications.
Findings: 58 studies (84% from the USA) met the inclusion criteria for the review. The findings suggest that for most clients, having a past history of mental health problems does not influence the likelihood of being retained in drug treatment. The body of evidence regarding concurrent mental health problems is contradictory. On the whole, the majority of studies suggest that neither presence nor severity of depressive, anxiety, or other Axis-I disorders is related to retention, but these findings are not entirely unequivocal, as a few studies report strong positive or negative associations between depression and anxiety disorders and retention. Few researchers looked separately at psychotic spectrum disorders hence no conclusions could be drawn. The presence of most personality disorders also did not appear to affect treatment tenure, with the exception of antisocial personality disorder, for which the evidence points towards a greater risk of dropout.
Conclusions: The balance of evidence suggests that, overall, dual diagnosis clients with Axis-I disorders who seek treatment in drug treatment services are retained as well as clients without dual diagnosis. Subgroups of clients who appear more vulnerable to premature dropout include those with antisocial personality disorder. Methodological shortcomings of the reviewed studies and resulting implications for this review and future research are discussed
Macroscopic description for a quantum plasma micro-instability: the quantum Weibel solution
The Weibel instability in the quantum plasma case is treated by means of a
fluid-like (moments) approach. Quantum modifications to the macroscopic
equations are then identified as effects of first or second kind. Quantum
effects of the first kind correspond to a dispersive term, similar to the Bohm
potential in the quantum hydrodynamic equations for plasmas. Effects of the
second kind are due to the Fermi statistics of the charge carriers and can
become the dominant influence for strong degeneracy. The macroscopic dispersion
relations are of higher order than those for the classical Weibel instability.
This corresponds to the presence of a cutoff wave-number even for the strong
temperature anisotropy case
Mental Health Workers’ Views About Their Suicide Prevention Role
Aim: Mental Health workers bear responsibility for preventing suicide in their client group. Survey studies have indicated that staff can be seriously adversely affected when a client suicides. The aim of the current study is to describe and evaluate the effects on mental health (MH) workers of their ongoing role in managing suicidal behaviours and to identify the thoughts and feelings associated with this role. Method: A survey was administered to 135 MH workers via an on-line self-report vehicle. The survey comprised standardised measures of anxiety and burnout as well as a questionnaire developed for this study concerning perceptions and attitudes to suicide and suicide prevention. Results: Factor analysis of 12 retained items of the questionnaire identified three factors: 1) preventability beliefs (beliefs about suicide being always and/or permanently preventable); 2) associated distress (stress/anxiety about managing suicidal behaviour); and 3) the prevention role (covering views about personal roles and responsibilities in preventing suicidal behaviours). Analysis of these factors found that many MH workers experience an elevation of stress/anxiety in relation to their role in managing suicidal behaviours. This distress was associated with the emotional exhaustion component of burnout. Measures showed adverse responses were higher for outpatient than inpatient workers; for those who had received generic training in suicide prevention: and for those who had experienced a workplace related client suicide. Conclusion: There is a need for the development of appropriate self-care strategies to alleviate stress in MH workers exposed to suicide
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Magnetoresistance Scaling Reveals Symmetries of the Strongly Correlated Dynamics in BaFe_{2}(As_{1-x}P_{x})_{2}.
The phenomenon of T-linear resistivity commonly observed in a number of strange metals has been widely seen as evidence for the breakdown of the quasiparticle picture of metals. This study shows that a recently discovered H/T scaling relationship in the magnetoresistance of the strange metal BaFe_{2}(As_{1-x}P_{x})_{2} is independent of the relative orientations of current and magnetic field. Rather, its magnitude and form depend only on the orientation of the magnetic field with respect to a single crystallographic axis: the direction perpendicular to the magnetic iron layers. This finding suggests that the magnetotransport scaling does not originate from the conventional averaging or orbital velocity of quasiparticles as they traverse a Fermi surface, but rather from dissipation arising from two-dimensional correlations
Boundary layer emission and Z-track in the color-color diagram of luminous LMXBs
We demonstrate that Fourier-frequency resolved spectra of atoll and Z-
sources are identical, despite significant difference in their average spectra
and luminosity (by a factor of ~10-20). This result fits in the picture we
suggested earlier, namely that the f> 1 Hz variability in luminous LMXBs is
primarily due to variations of the boundary layer luminosity. In this picture
the frequency resolved spectrum equals the boundary layer spectrum, which
therefore can be straightforwardly determnined from the data. The obtained so
boundary layer spectrum is well approximated by the saturated Comptonization
model, its high energy cut-off follows kT~2.4 keV black body. Its independence
on the global mass accretion rate lends support to the theoretical suggestion
by Inogamov &Sunyaev (1999) that the boundary layer is radiation pressure
supported. With this assumption we constrain the gravity on the neutron star
surface and its mass and radius. Equipped with the knowledge of the boundary
layer spectrum we attempt to relate the motion along the Z-track to changes of
physically meaningful parameters. Our results suggest that the contribution of
the boundary layer to the observed emission decreases along the Z-track from
conventional ~50% on the horizontal branch to a rather small number on the
normal branch. This decrease can be caused, for example, by obscuration of the
boundary layer by the geometrically thick accretion disk at Mdot ~ Mdot_Edd.
Alternatively, this can indicate significant change of the structure of the
accretion flow at Mdot ~ Mdot_ Edd and disappearance of the boundary layer as a
distinct region of the significant energy release associated with the neutron
star surface.Comment: 9 pages, 7 figures, Accepted in A&
Development And Preliminary Psychometric Evaluation of the Children\u27s Saving Inventory
This study reports on the development and initial psychometric properties of the Children\u27s Saving Inventory (CSI), a parent-rated measure designed to assess child hoarding behaviors. Subjects included 123 children and adolescents diagnosed with primary Obsessive-Compulsive Disorder (OCD) and their parents. Trained clinicians administered the Children\u27s Yale-Brown Obsessive-Compulsive Scale (CY-BOCS), items assessing Family Accommodation and the Clinical Global Impressions-Severity index. Parents completed the CSI, Child Obsessive-Compulsive Impact Scale (COIS)-Parent Version and Child Behavior Checklist. Youth completed the COIS-Child Version, Obsessive-Compulsive Inventory Child Version (OCI-CV), Multidimensional Anxiety Scale for Children, and Children\u27s Depression Inventory-Short Form. A four factor solution was identified; factors were named Discarding, Clutter, Acquisition, and Distress/Impairment. Internal consistency for the CSI Total and factor scores were good. One-week test-retest reliability (n = 31) from a random subsample was excellent. Known groups validity was supported vis-Ă -vis higher CSI scores for those endorsing hoarding on the CY-BOCS Symptom Checklist. Convergent and discriminant validity was evidenced by weak relationships with OCI-CV Checking and Contamination factors but strong relationships with the OCI-CV Hoarding factor and with hoarding obsession/compulsions on the CY-BOCS. These findings provide initial support for the reliability and validity of the CSI for the assessment of hoarding behaviors among youth with OCD. Future studies are needed to extend these findings to non-OCD samples of youth
Laser Wire Scanner Compton Scattering Techniques for the Measurement of the Transverse Beam Size of Particle Beams at Future Linear Colliders
This archive summarizes a working paper and conference proceedings related to
laser wire scanner development for the Future Linear Collider (FLC) in the
years 2001 to 2006. In particular the design, setup and data taking for the
laser wire experiments at PETRA II and CT2 are described. The material is
focused on the activities undertaken by Royal Holloway University of London
(RHUL).Comment: 61 page
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