1,073 research outputs found

    Restorative justice dialogue: The Impact of Mediation and Conferencing on Juvenile Recidivism

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    This is the first meta-analysis that examined the effectiveness of the two most prominent restorative justice dialogue programs in reducing juvenile recidivism. The use of meta-analytic methods provides a useful means for summarizing diverse research findings across restorative justice studies and synthesizing these findings in an objective manner. The use of an effect size is an easily interpreted way of assessing the strength of an intervention effect

    Evaluating the Effectiveness of Cognitive-Behavioral Treatment of Residual Symptoms and Impairment in Schizophrenia

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    This study evaluated the effectiveness of cognitive-behavioral interventions in the treatment of persons with schizophrenia who experienced significant residual symptoms and impaired functioning despite their adherence to medication. The study used an aggregated AB single-system research design across 22 participants to evaluate change in clinical outcomes. Standardized measures of psychosocial functioning, severity of symptoms, attainment of treatment goals, and severity of the impact of illness on self-concept were used to assess change during the course of 18 months of treatment. Of the clients, 86% made statistically significant improvement in psychosocial functioning; 82% of the clients made statistically significant reduction in severity of psychiatric symptoms. All 22 clients exceeded the expected level of attainment of treatment goals. There was a statistically significant reduction in the negative impact of illness on sense of self. Findings support the effectiveness of cognitive-behavioral interventions in schizophrenia

    Nanoarrays for the generation of complex optical wave-forms

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    Light beams with unusual forms of wavefront offer a host of useful features to extend the repertoire of those developing new optical techniques. Complex, non-uniform wavefront structures offer a wide range of optomechanical applications, from microparticle rotation, traction and sorting, through to contactless microfluidic motors. Beams combining transverse nodal structures with orbital angular momentum, or vector beams with novel polarization profiles, also present new opportunities for imaging and the optical transmission of information, including quantum entanglement effects. Whilst there are numerous well-proven methods for generating light with complex wave-forms, most current methods work on the basis of modifying a conventional Hermite-Gaussian beam, by passage through suitably tailored optical elements. It has generally been considered impossible to directly generate wave-front structured beams either by spontaneous or stimulated emission from individual atoms, ions or molecules. However, newly emerged principles have shown that emitter arrays, cast in an appropriately specified geometry, can overcome the obstacles: one possibility is a construct based on the electronic excitation of nanofabricated circular arrays. Recent experimental work has extended this concept to a phase-imprinted ring of apertures holographically encoded in a diffractive mask, generated by a programmed spatial light modulator. These latest advances are potentially paving the way for creating new sources of structured light

    Optical vortex generation from molecular chromophore arrays

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    The generation of light endowed with orbital angular momentum, frequently termed optical vortex light, is commonly achieved by passing a conventional beam through suitably constructed optical elements. This Letter shows that the necessary phase structure for vortex propagation can be directly produced through the creation of twisted light from the vacuum. The mechanism is based on optical emission from a family of chromophore nanoarrays that satisfy specific geometric and symmetry constraints. Each such array can support pairs of electronically delocalized doubly degenerate excitons whose azimuthal phase progression is responsible for the helical wave front of the emitted radiation. The exciton symmetry dictates the maximum magnitude of topological charge; detailed analysis secures the conditions necessary to deliver optical vortices of arbitrary order

    Raman scattering mediated by neighboring molecules

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    Raman scattering is most commonly associated with a change in vibrational state within individual molecules, the corresponding frequency shift in the scattered light affording a key way of identifying material structures. In theories where both matter and light are treated quantum mechanically, the fundamental scattering process is represented as the concurrent annihilation of a photon from one radiation mode and creation of another in a different mode. Developing this quantum electrodynamical formulation, the focus of the present work is on the spectroscopic consequences of electrodynamic coupling between neighboring molecules or other kinds of optical center. To encompass these nanoscale interactions, through which the molecular states evolve under the dual influence of the input light and local fields, this work identifies and determines two major mechanisms for each of which different selection rules apply. The constituent optical centers are considered to be chemically different and held in a fixed orientation with respect to each other, either as two components of a larger molecule or a molecular assembly that can undergo free rotation in a fluid medium or as parts of a larger, solid material. The two centers are considered to be separated beyond wavefunction overlap but close enough together to fall within an optical near-field limit, which leads to high inverse power dependences on their local separation. In this investigation, individual centers undergo a Stokes transition, whilst each neighbor of a different species remains in its original electronic and vibrational state. Analogous principles are applicable for the anti-Stokes case. The analysis concludes by considering the experimental consequences of applying this spectroscopic interpretation to fluid media; explicitly, the selection rules and the impact of pressure on the radiant intensity of this process

    Finding A Place in the World: The Experience of Recovery from Severe Mental Illness

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    This hermeneutic phenomenological study of 45 adults with serious and persistent mental illness (SPMI) examines the experience of recovery over 3 years. After a brief review of the results from the first two phases, this article reports the findings from the third phase of the recovery process. Five essential themes are identified: (1) reintegration in the community; (2) reintegration with family and friends; (3) reintegration with the case manager; (4) reintegration with oneself; (5) barriers to social inclusion. Findings highlight the unmet needs for consumers in their relationships with case managers and barriers to inclusion at the macro level. Implications for practice include the delineation of client and case manager tasks specific to each essential theme

    Psychodynamic Psychotherapy: A Quantitative, Longitudinal Perspective

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    This effectiveness study examined the course of treatment longitudinally and outcomes associated with psychodynamic psychotherapy for a sample of 1,050 people undertaking this treatment in a community setting, over the course of 4 years, at 3-month intervals, using the Outcome Questionnaire (OQ)-45.2. The authors used multilevel modeling to look at the nature of change over time and at potentially meaningful moderating variables. Results show a robust general improvement, though a more moderate one than described in recent meta-analyses including primarily prospective studies. The treatment was followed by broad improvements, over time, with a general trend and few notable interaction effects. The treatment involved little deterioration, particularly in the first year. Subgroup analysis suggested that (a) clients with more initial symptom severity showed greater improvement and a unique course of recovery with (b) clients who stayed over a year constituting a potentially unique subgroup

    African Americans and Recovery from Severe Mental Illness

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    This mixed methods study examined the lived experience of African American persons recovering from serious and persistent mental illness (SPMI) and assessed changes in demoralization, engulfment and coping over time. Psychological measures were administered and semi-structured interviews were conducted at three time points (6, 12, and 18 months) with nine African Americans with SPMI. Qualitative analysis was done from an Afrocentric perspective. The interviews were transcribed, read and coded to cluster thematic aspects in each case and across cases. Atlas-ti was used to recode transcripts and retrieve quotes to dimensionalize each essential theme. Four themes were identified: 1) striving for normalcy, 2) striving for a positive and proactive outlook, 3) mastering the challenges posed by mental illness, and 4) leaning on the supports that watch out for and over me. Paired t-tests were performed on the dependent variables of demoralization, coping, and engulfment. There was a significant change in reduction of demoralization and increase in coping from Time 1 to Time 2. There was no significant change in engulfment. These changes are noteworthy as participants averaged 21 years of illness. The relationship between the quantitative results and qualitative findings are discussed. Results have implications for practice and improving recovery-oriented services to African Americans. For example, case managers are advised to consider mental health stigma and anti stigma interventions that are inclusive of racial discrimination and expand their cultural sensitivity to include the sense of endangerment experienced by African American clients. Four African American consultants critiqued the study anonymously

    Resonance energy transfer: The unified theory revisited

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    Resonanceenergy transfer (RET) is the principal mechanism for the intermolecular or intramolecular redistribution of electronic energy following molecular excitation. In terms of fundamental quantum interactions, the process is properly described in terms of a virtual photon transit between the pre-excited donor and a lower energy (usually ground-state) acceptor. The detailed quantum amplitude for RET is calculated by molecular quantum electrodynamical techniques with the observable, the transfer rate, derived via application of the Fermi golden rule. In the treatment reported here, recently devised state-sequence techniques and a novel calculational protocol is applied to RET and shown to circumvent problems associated with the usual method. The second-rank tensor describing virtual photon behavior evolves from a Green’s function solution to the Helmholtz equation, and special functions are employed to realize the coupling tensor. The method is used to derive a new result for energy transfer systems sensitive to both magnetic- and electric-dipole transitions. The ensuing result is compared to that of pure electric-dipole–electric-dipole coupling and is analyzed with regard to acceptable transfer separations. Systems are proposed where the electric-dipole–magnetic-dipole term is the leading contribution to the overall rate

    EXPLOSIVE AND REACTIVE HORIZONTAL JUMP ASSESSMENT – RELIABILITY AND VALIDITY FOR ATHLETIC POPULATIONS

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    The reliability and validity of horizontal jump (HJ) kinetic measures was assessed for six female national-class track sprinters aged 15-18 years. Each sprinter performed three 10 m sprints, as well as five standing HJs and five reactive HJs from a 45 cm drop. Two Kistler force platforms (1000 Hz) covered with Mondo track surface recorded the HJ ground contact kinetics and an aluminium measuring tape was used to record HJ distance. Statistical measures included the intra-class coefficient and coefficient of variation to determine reliability of the measures. Linear regression analysis between sprint performance and the HJ measures was employed to assess validity. The standing explosive HJ test was revealed to be valid and reliable in female junior sprinters. The kinetic measures were superior to traditional field measures of jump distance
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