3,345 research outputs found
Impact of Working Alliance on Clinical Outcomes in Veterans Enrolled in Suicide-Specific Group Therapy
Suicide is a global issue that has led researchers to seek interventions that will have a significant impact on mental health and wellbeing. Veterans comprise the largest number of suicides annually compared to other groups. There is a higher prevalence of mental disorders due to combat related experiences that may play a role in increased rates of suicide. Examined clinical diagnoses in this study include posttraumatic stress disorder (PTSD), depression, alcohol use and substance use. This study explores how group therapy and working alliance play a role in reducing suicidality in a group therapy setting. The first hypotheses is that clinical dysfunction, as evidenced by presence of PTSD depression severity, alcohol and drug use at the baseline will negatively impact therapeutic alliance at the 1- and 3-month time points. The second hypothesis is that greater therapeutic alliance scores will be associated with more rapid improvements in clinical outcomes of interest. Results indicate that individuals with various clinical diagnoses are able to form a working alliance and suicidal ideation scores significantly decrease over time
Grain size dependence of barchan dune dynamics
The dependence of the barchan dune dynamics on the size of the grains
involved is investigated experimentally. Downsized barchan dune slices are
observed in a narrow water flow tube. The relaxation time from an initial
symmetric triangular heap towards an asymmetric shape attractor increases with
dune mass and decreases with grain size. The dune velocity increases with grain
size. In contrast, the velocity scaling and the shape of the barchan dune is
independent of the size of the grains
Modeling of electron emission processes accompanying Radon--decays within electrostatic spectrometers
Electrostatic spectrometers utilized in high-resolution beta-spectroscopy
studies such as in the Karlsruhe Tritium Neutrino (KATRIN) experiment have to
operate with a background level of less than 10^(-2) counts per second. This
limit can be exceeded by even a small number of Rn-219 or Rn-220 atoms being
emanated into the volume and undergoing alpha-decay there. In this paper we
present a detailed model of the underlying background-generating processes via
electron emission by internal conversion, shake-off and relaxation processes in
the atomic shells of the Po-215 and Po-216 daughters. The model yields electron
energy spectra up to 400 keV and electron multiplicities of up to 20 which are
compared to experimental data.Comment: 7 figure
You are what you measure! But are we measuring it right? An empiric analysis of energy access metrics based on a multi-tier approach in Bangladesh
Measuring energy access through binary indicators is
insufficient, and often, even misleading. In this work, the
SE4ALL global tracking framework, and the recently
introduced ESMAP multi-tier approach, is critically
discussed analyzing questionnaire based primary data from
rural Bangladesh. The performance of different energy
interventions is evaluated using the new tier framework.
The challenges in its application lie in reliable data
collection, adequate gradation of indicators, and an
effective algorithm for the tier assignment based on the
specified set of attributes. The study showcases very high
sensitivities to parameter changes, different algorithms, and data requirements. The results reveal a clear trade-off
between capturing the multi-dimensionality of energy
access and the simplicity of an easy to use global
framework. Suggestions to improve the measuring
approach are made and conclusions are drawn for possible
implications of the tier framework for different energy
service offers in the market. Strengths and weaknesses of
the present measurement scheme are discussed and country
specific results interpreted through targeted gap analysis for future policy advice
MAARS OF SOUTH-CENTRAL OREGON By
If we could go back in time some 5 to 10 million years to the Pliocene Epoch and recreate the landscape of south-central Oregon, here are some of the things we would probably see: From a plain originally of slight relief, faulting has already delineate
3D Dune Skeleton Model as a Coupled Dynamical System of 2D Cross-Sections
To analyze theoretically the stability of the shape and the migration process
of transverse dunes and barchans, we propose a {\it skeleton model} of 3D dunes
described with coupled dynamics of 2D cross-sections. First, 2D cross-sections
of a 3D dune parallel to the wind direction are extracted as elements of a
skeleton of the 3D dune, hence, the dynamics of each and interaction between
them is considered. This model simply describes the essential dynamics of 3D
dunes as a system of coupled ordinary differential equations. Using the model
we study the stability of the shape of 3D transversal dunes and their
deformation to barchans depending on the amount of available sand in the dune
field, sand flow in parallel and perpendicular to wind direction.Comment: 6 pages, 6 figures, lette
Magnetization of ferrofluids with dipolar interactions - a Born--Mayer expansion
For ferrofluids that are described by a system of hard spheres interacting
via dipolar forces we evaluate the magnetization as a function of the internal
magnetic field with a Born--Mayer technique and an expansion in the dipolar
coupling strength. Two different approximations are presented for the
magnetization considering different contributions to a series expansion in
terms of the volume fraction of the particles and the dipolar coupling
strength.Comment: 19 pages, 11 figures submitted to PR
Ferromagnetic Liquid Thin Films Under Applied Field
Theoretical calculations, computer simulations and experiments indicate the
possible existence of a ferromagnetic liquid state, although definitive
experimental evidence is lacking. Should such a state exist, demagnetization
effects would force a nontrivial magnetization texture. Since liquid droplets
are deformable, the droplet shape is coupled with the magnetization texture. In
a thin-film geometry in zero applied field, the droplet has a circular shape
and a rotating magnetization texture with a point vortex at the center. We
calculate the elongation and magnetization texture of such ferromagnetic thin
film liquid droplet confined between two parallel plates under a weak applied
magnetic field. The vortex stretches into a domain wall and exchange forces
break the reflection symmetry. This behavior contrasts qualitatively and
quantitatively with the elongation of paramagnetic thin films.Comment: 10 pages, 4 figures, Submitted to Phys. Rev.
- …