615 research outputs found
Using graph transformation algorithms to generate natural language equivalents of icons expressing medical concepts
A graphical language addresses the need to communicate medical information in
a synthetic way. Medical concepts are expressed by icons conveying fast visual
information about patients' current state or about the known effects of drugs.
In order to increase the visual language's acceptance and usability, a natural
language generation interface is currently developed. In this context, this
paper describes the use of an informatics method ---graph transformation--- to
prepare data consisting of concepts in an OWL-DL ontology for use in a natural
language generation component. The OWL concept may be considered as a
star-shaped graph with a central node. The method transforms it into a graph
representing the deep semantic structure of a natural language phrase. This
work may be of future use in other contexts where ontology concepts have to be
mapped to half-formalized natural language expressions.Comment: Presented at the TSD 2014 conference: Text, Speech and Dialogue, 17th
international conference. Brno, Czech Republic, September 8-12, 2014. 10
pages, 7 figure
The Effectiveness of Telemedicine for Weight Management in the MOVE! Program
PURPOSE: To examine the effectiveness of videoconferencing technology for delivering comprehensive weight management treatment.METHODS: This retrospective cohort study was conducted by extraction of data from medical records for the years 2008-2010. The treatment included a series of 12 weekly MOVE!Ÿ classes delivered using videoconferencing. Data were extracted from the time of baseline weight to 1 year after baseline weight for the MOVE! participants (n = 60) and from a concurrent control group (n = 60) that did not participate in MOVE! treatment.FINDINGS: Results indicated that the MOVE! group lost weight while the control group gained weight, resulting in a mean difference between the groups of -5.5 ± 2.7 kg (95% CI = -8.0 to -3.0; P \u3c .0001).CONCLUSIONS: These results indicate that videoconferencing is an effective method to provide the MOVE! Weight Management Program to veterans. Weight loss was maintained for one year after baseline in the MOVE! group. This is very promising as weight re-gain is a common issue and these results support using videoconferencing for a long-term weight management treatment option
The blazar-like radio structure of the TeV source IC310
Context. The radio galaxy IC310 in the Perseus cluster has recently been
detected in the gamma-ray regime at GeV and TeV energies. The TeV emission
shows time variability and an extraordinarily hard spectrum, even harder than
the spectrum of the similar nearby gamma-ray emitting radio galaxy M87.
Aims. High-resolution studies of the radio morphology help to constrain the
geometry of the jet on sub-pc scales and to find out where the high-energy
emission might come from.
Methods. We analyzed May 2011 VLBA data of IC310 at a wavelength of 3.6 cm,
revealing the parsec-scale radio structure of this source. We compared our
findings with more information available from contemporary single-dish flux
density measurements with the 100-m Effelsberg radio telescope.
Results. We have detected a one-sided core-jet structure with blazar-like,
beamed radio emission oriented along the same position angle as the kiloparsec
scale radio structure observed in the past by connected interferometers.
Doppler-boosting favoritism is consistent with an angle of theta < 38 degrees
between the jet axis and the line-of-sight, i.e., very likely within the
boundary dividing low-luminosity radio galaxies and BL Lac objects in unified
schemes.
Conclusions. The stability of the jet orientation from parsec to kiloparsec
scales in IC310 argues against its classification as a headtail radio galaxy;
i.e., there is no indication of an interaction with the intracluster medium
that would determine the direction of the tail. IC310 seems to represent a
low-luminosity FRI radio galaxy at a borderline angle to reveal its BL Lac-type
central engine.Comment: 5 pages, 3 figures (1 color); A&A, accepte
Constructing Conceptual Knowledge Artefacts: Activity Patterns in the Ontology Authoring Process
Ferrule-top nanoindenter: An optomechanical fiber sensor for nanoindentation
Ferrule-top probes are self-aligned all-optical devices obtained by fabricating a cantilever on the top of a ferruled optical fiber. This approach has been proven to provide a new platform for the realization of small footprint atomic force microscopes (AFMs) that adapt well to utilization outside specialized laboratories [D. Chavan, Rev. Sci. Instrum. 81, 123702 (2010)10.1063/1.3516044; D. Chavan, Rev. Sci. Instrum. 82, 046107 (2011)10.1063/1.3579496]. In this paper we now show that ferrule-top cantilevers can be also used to develop nanoindenters. Our instrument combines the sensitivity of commercial AFM-based indentation with the ease-of-use of more macroscopic instrumented indenters available today on the market. Furthermore, the all-optical design allows smooth operations also in liquids, where other devices are much more limited and often provide data that are difficult to interpret. This study may pave the way to the implementation of a new generation user-friendly nanoindenters for the measurement of the stiffness of samples in material sciences and medical research. © 2012 American Institute of Physics
The Radio Structure of High-Energy Peaked BL Lacertae Objects
We present VLA and first-epoch VLBA observations that are part of a program
to study the parsec-scale radio structure of a sample of fifteen
high-energy-peaked BL Lacs (HBLs). The sample was chosen to span the range of
logarithmic X-ray to radio flux ratios observed in HBLs. As this is only the
first epoch of observations, proper motions of jet components are not yet
available; thus we consider only the structure and alignment of the parsec- and
kiloparsec-scale jets. Like most low-energy-peaked BL Lacs (LBLs), our HBL
sample shows parsec-scale, core-jet morphologies and compact, complex
kiloparsec-scale morphologies. Some objects also show evidence for bending of
the jet 10-20pc from the core, suggesting interaction of the jet with the
surrounding medium. Whereas LBLs show a wide distribution of parsec- to
kpc-scale jet misalignment angles, there is weak evidence that the jets in HBLs
are more well-aligned, suggesting that HBL jets are either intrinsically
straighter or are seen further off-axis than LBL jets.Comment: Accepted, A
Recommended from our members
Bench-Scale Enhanced Sludge Washing and Gravity Settling of Hanford Tank S-107 Sludge
This report summarizes the work performed with sludge from Hanford Site single-shell Tank 241-S-107 during FY 98. The tests described in this report support the development of the baseline Hanford tank sludge pretreatment flowsheet that includes the enhanced sludge washing (ESW) and settle/decant process
High-Resolution Radio Imaging of Gravitational Lensing Candidates in the 1 Jansky BL Lac Sample
While BL Lacertae objects are widely believed to be highly beamed,
low-luminosity radio galaxies, many radio-selected BL Lacs have extended radio
power levels and optical emission lines that are too luminous to be
low-luminosity radio galaxies. Also, Stocke & Rector discovered an excess of
MgII absorption systems along BL Lac sightlines compared to quasars, suggesting
that gravitational lensing may be another means of creating the BL Lac
phenomenon in some cases. We present a search for gravitationally-lensed BL
Lacs with deep, high-resolution, two-frequency VLA radio maps of seven lensing
candidates from the 1 Jansky BL Lac sample. We find that none of these objects
are resolved into an Einstein ring like B 0218+357, nor do any show multiple
images of the core. All of the lensing candidates that were resolved show a
flat-spectrum core and very unusual, steep-spectrum extended morphology that is
incompatible with a multiply lensed system. Thus, while these observations do
not rule out microlensing, no macrolensing is observed.Comment: Accepted, A
A Randomized Experimental Investigation of Reasoning Training for People With Delusions
The present study aimed to investigate whether a brief reasoning training module changes the âjumping to conclusionsâ data gathering bias in people with delusions. A secondary aim was to examine whether improvements in reasoning would lead to greater flexibility in thinking about delusions. It was found that people with delusions and a diagnosis of schizophrenia (nâ=â34) requested less information on a reasoning task compared with a nonclinical control group (nâ=â34). The clinical group was then randomly allocated to a session of reasoning training or to an attention control condition. Following training, participants showed a significant increase in data gathering, and a small number reported more flexibility and less conviction in their delusions, although this finding was not significant. The presence at baseline of an extreme reasoning bias moderated the effect of training. The study provides further confirmation of the jumping to conclusions bias and shows that data gathering can be improved, though the severest form of the bias is resistant to change. It is recommended that lengthier, delusion-related reasoning packages be developed and evaluated
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