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Identifying children with anxiety disorders using brief versions of the Spence Children's Anxiety Scale for children, parents and teachers
Anxiety disorders are among the most prevalent mental health disorders experienced by children and are associated with significant negative outcomes. Only a minority of affected children, however, access professional help, and a failure to identify children with anxiety disorders presents a key barrier to treatment access. Existing child anxiety questionnaire measures are long and time consuming to complete, limiting their potential for widespread use as identification tools in community settings. We developed a brief questionnaire for parents, children, and teachers using items from the Spence Children’s Anxiety Scale (SCAS) and evaluated the new measure’s psychometric properties, capacity to discriminate between a community (n = 361) and clinic-referred sample (n = 338) of children aged 7–11, and identified optimal cut-off scores for accurate identification of preadolescent children experiencing clinically significant levels of anxiety. The findings provided support for the reliability and validity of 8-item versions of the SCAS, with the brief questionnaire scores displaying comparable internal consistency, agreement among reporters, and convergent/divergent validity to the full-length SCAS scores. The brief SCAS scores also discriminated between the community and clinic-referred samples and identified children in the clinic-referred sample with a moderate-to-good level of accuracy and acceptable sensitivity and specificity. Combining reporters improved sensitivity, but at the expense of specificity, and findings suggested parent report should be prioritized. This new brief questionnaire has potential for use in community settings as a tool to improve identification of children who are experiencing clinically significant levels of anxiety and warrant further assessment and potential support
Anatomical and histological study of the dorsal and ventral nasal conchal bullae in normal horses
Integrated spatial multiplexing of heralded single photon sources
The non-deterministic nature of photon sources is a key limitation for single
photon quantum processors. Spatial multiplexing overcomes this by enhancing the
heralded single photon yield without enhancing the output noise. Here the
intrinsic statistical limit of an individual source is surpassed by spatially
multiplexing two monolithic silicon correlated photon pair sources,
demonstrating a 62.4% increase in the heralded single photon output without an
increase in unwanted multi-pair generation. We further demonstrate the
scalability of this scheme by multiplexing photons generated in two waveguides
pumped via an integrated coupler with a 63.1% increase in the heralded photon
rate. This demonstration paves the way for a scalable architecture for
multiplexing many photon sources in a compact integrated platform and achieving
efficient two photon interference, required at the core of optical quantum
computing and quantum communication protocols.Comment: 10 pages, 3 figures, comments welcom
IoT Expunge: Implementing Verifiable Retention of IoT Data
The growing deployment of Internet of Things (IoT) systems aims to ease the
daily life of end-users by providing several value-added services. However, IoT
systems may capture and store sensitive, personal data about individuals in the
cloud, thereby jeopardizing user-privacy. Emerging legislation, such as
California's CalOPPA and GDPR in Europe, support strong privacy laws to protect
an individual's data in the cloud. One such law relates to strict enforcement
of data retention policies. This paper proposes a framework, entitled IoT
Expunge that allows sensor data providers to store the data in cloud platforms
that will ensure enforcement of retention policies. Additionally, the cloud
provider produces verifiable proofs of its adherence to the retention policies.
Experimental results on a real-world smart building testbed show that IoT
Expunge imposes minimal overheads to the user to verify the data against data
retention policies.Comment: This paper has been accepted in 10th ACM Conference on Data and
Application Security and Privacy (CODASPY), 202
A GAS-LIQUID SYSTEM FOR ENZYME KINETIC STUDIES OF VOLATILE ORGANIC CHEMICALS Determination of Enzyme Kinetic Constants and Partition Coefficients of Trichloroethylene
ABSTRACT: A gas-liquid system was developed for enzyme kinetic study wit
Challenges for Creating and Sustaining A Green Revolution in Africa
Research and Development/Tech Change/Emerging Technologies,
Repair of aortoesophageal fistula due to a penetrating atherosclerotic ulcer of the descending thoracic aorta and literature review
Penetrating atherosclerotic ulcer rupturing into the esophagus is rare and the resulting aortoesophageal fistula carries a high mortality. In view of the emergency nature of the entity and complexity of the procedure management of such a condition is not standardized. The immediate concern is to save the patient from life threatening exsanguinations. Contrary to the practice hitherto followed no active surgical intervention was carried out for the esophageal lesion and cardiopulmonary bypass support was not employed. We present a case of rupture of a penetrating atherosclerotic ulcer of descending thoracic aorta, where in an emergency surgery was performed and the patient is doing well 21 months later
Functional and Morphological Studies of Mitochondria Exposed to Undecagold Clusters: Biologic Surfaces Labeling with Gold Clusters
This study reports morphological and functional alterations observed in respiring isolated mitochondria when they are exposed to nonpenetrating, positive electrostatically charged synthetic undecagold clusters. Modification of the undecagold clusters positive charges change or prevent the functional effects and the binding to the outside surface of the mitochondria. The mitochondrial functional alterations are dependent on the oxidative phosphorylation capacity of the isolated organelles. The results of these experiments indicate that artificial undecagold may be useful to explore the molecular mechanisms of biological energy transducers which require electric charges separation, ionic fluxes, and electric surface properties
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