1,433 research outputs found

    Hadron Spectroscopy with COMPASS at CERN

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    The aim of the COMPASS hadron programme is to study the light-quark hadron spectrum, and in particular, to search for evidence of hybrids and glueballs. COMPASS is a fixed-target experiment at the CERN SPS and features a two-stage spectrometer with high momentum resolution, large acceptance, particle identification and calorimetry. A short pilot run in 2004 resulted in the observation of a spin-exotic state with JPC=1−+J^{PC} = 1^{-+} consistent with the debated π1(1600)\pi1(1600). In addition, Coulomb production at low momentum transfer data provide a test of Chiral Perturbation Theory. During 2008 and 2009, a world leading data set was collected with hadron beam which is currently being analysed. The large statistics allows for a thorough decomposition of the data into partial waves. The COMPASS hadron data span over a broad range of channels and shed light on several different aspects of QCD.Comment: 4 pages, 5 figure

    Strengths Model for Youth: Moving toward a Client-Centered, Strengths-based Model of Case Management in Community Mental Health

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    Approximately 13 to 20% of U.S. children and adolescents experience a mental disorder in a given year (Perou et al., 2013), with only half of these youth receiving mental health care (Kataoka, Zhang, & Wells, 2002; Merikangas, Nakamura, & Kessler, 2009). Even when children do access mental health services, approximate- ly 40% to 60% discontinue before completing their treatment (Baruch, Vrouva, & Fearon, 2009; Hoste, Zaitsoff, Hewell & le Grange, 2007; Miller, Southam-Gerow & Allin, 2008; Oruche, Downs, Holloway, Draucker & Aalsma, 2014). These statistics highlight the critical need for identification and implementation of effective child and family interventions for the mental health service system. Case management is a widely offered service within the children’s mental health system, but there is a scarcity of literature and research on models of case management and their effec- tiveness. This chapter introduces one model of case management, Strengths Model for Youth, and summarizes the current evidence on its effectiveness

    Practitioner’s Guidebook: Best Practices in Assessment for the Kansas Serious Emotional Disturbance Waiver

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    The Kansas Serious Emotional Disturbance (SED) Waiver Best Practices Guide for Assessment was developed to share best practices in assessment for Kansas children and families. Additionally, this guide was developed to support community mental health centers (CMHCs) in conducting accurate and equitable SED Waiver eligibility processes. CMHCs can supplement their initial staff CAFAS training and CAFAS booster training with this guide, as it accounts for specific challenges or concerns that are unique to Kansas and Kansas’ SED Waiver eligibility process. The Guide is organized as follows: ‱ Brief introduction to the CAFAS and PECFAS; ‱ Developer identified CAFAS/PECFAS administration guidelines; ‱ Summary of the common challenges observed regarding the CAFAS administration in Kansas and accompanying best practice recommendations; and ‱ General best practices for conducting child and family assessments in mental health contexts. This guide closes with an example case vignette and decision flow charts for some of the CAFAS domains

    Quick Reference: Print-Friendly Best Practices and User Flowcharts for Kansas Serious Emotional Disturbance Waiver

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    Purpose: This Quick Reference Guide was developed to provide clinicians with easy-to-access recommendations and decision guides for common challenges in CAFAS/PECFAS assessment. The first section of the guide summarizes common challenges in overall CAFAS administration, and the second section reviews common challenges within each domain. Both sections include recommended assessment practices for addressing each challenge. The Guide concludes with quick reference decision flow charts for two CAFAS domains, which clinicians often find most challenging or confusing to complete, the Self-harmful Behavior domain and the Thinking domain

    Magnetic properties of single-crystalline CeCuGa3

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    The magnetic behavior of single-crystalline CeCuGa3 has been investigated. The compound forms in a tetragonal BaAl4-type structure consisting of rare-earth planes separated by Cu-Ga layers. If the Cu-Ga site disorder is reduced, CeCuGa3 adopts the related, likewise tetragonal BaNiSn3-type structure, in which the Ce ion are surrounded by different Cu and Ga layers and the inversion symmetry is lost. In the literature conflicting reports about the magnetic order of CeCuGa3 have been published. Single crystals with the centrosymmetric structure variant exhibit ferromagnetic order below approx. 4 K with a strong planar anisotropy. The magnetic behavior above the transition temperature can be well understood by the crystal-field splitting of the 4f Hund's rule ground-state multiplet of the Ce ions

    Theory of Umklapp-assisted recombination of bound excitons in Si:P

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    We present the calculations for the oscillator strength of the recombination of excitons bound to phosphorous donors in silicon. We show that the direct recombination of the bound exciton cannot account for the experimentally measured oscillator strength of the no-phonon line. Instead, the recombination process is assisted by an umklapp process of the donor electron state. We make use of the empirical pseudopotential method to evaluate the Umklapp-assisted recombination matrix element in second-order perturbation theory. Our result is in excellent agreement with the experiment. We also present two methods to improve the optical resolution of the optical detection of the spin state of a single nucleus in silicon.Comment: 9 pages, 6 EPS figures, Revtex

    Geoconservation, history of

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    [Excerto] The word "geoconservation" was probably used for the first time in Tasmania (Australia) in the beginning of the 1990s (Sharples 1993). Sharples, a pioneer of Australian geoconservation, reports that during the period of 1993-1994, the Forestry Commission of Tasmania prepared several reports with preliminary inventories of landforms in the state forests of Tasmania in order to facilitate "the conservation of Earth systems ('Geoconservation')" (Sharples 1993). However, initiatives to protect particular geological and geomorphological features started centuries before, during the seventeenth century. The first example of the protection of geological features dates back to 1668, concerning the protection of the Baumannshöhle cave in the Harz Mountains in Germany (Grube 1994)...info:eu-repo/semantics/publishedVersio

    Anomalously large oxygen-ordering contribution to the thermal expansion of untwinned YBa2Cu3O6.95 single crystals: a glass-like transition near room temperature

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    We present high-resolution capacitance dilatometry studies from 5 - 500 K of untwinned YBa2Cu3Ox (Y123) single crystals for x ~ 6.95 and x = 7.0. Large contributions to the thermal expansivities due to O-ordering are found for x ~ 6.95, which disappear below a kinetic glass-like transition near room temperature. The kinetics at this glass transition is governed by an energy barrier of 0.98 +- 0.07 eV, in very good agreement with other O-ordering studies. Using thermodynamic arguments, we show that O-ordering in the Y123 system is particularly sensitive to uniaxial pressure (stress) along the chain axis and that the lack of well-ordered chains in Nd123 and La123 is most likely a consequence of a chemical-pressure effect.Comment: 4 pages, 3 figures, submitted to PR
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