PB4L school-wide evaluation: preliminary findings

Abstract: This report presents indicative findings from the first phase of an evaluation of Positive Behaviour for Learning: School-Wide (PB4L: School-Wide). The report discusses the implementation and short-term shifts for schools that began PB4L: School-Wide in 2010/11. The findings suggest that overall, PB4L: School-Wide is well-regarded in participating schools and is linked to a wide range of changes for schools, teachers, and students

Combinatorics of Injective words for temperley-lieb algebras

Peer reviewedPostprin

The homology of the Brauer algebras

Peter Patzt was supported by the Danish National Research Foundation through the Copenhagen Centre for Geometry and Topology (DNRF151) and the European Research Council under the European Union’s Seventh Framework Programme ERC Grant agreement ERC StG 716424 - CASe, PI Karim AdiprasitoPeer reviewedPublisher PD

Bureaucracy, Demography, and Midwest Sociology

This article proposes a framework for analyzing the impact of social change on universities, using Midwestern states to flesh out the perspective. The framework draws together political, economic and, demographic changes by using the concept of bureaucratic organizations. More specifically, it uses the notions of the internal and the external environments of universities as organizations to examine the impact of societal change upon universities in general and, by extension, on sociologists’ knowledge. The internal environment is viewed as the administrative effort to rationalize the external and internal environments with programmatic changes. The central concerns here are financial control and privatization. To examine the external environment, the article includes demographic and economic data as well as the importance of for-profit higher education programs. Efforts to rationalize the university with the external environment have led to greatly increased use of contingent faculty and disturbing, even shocking, levels of student debt. The advantage of the framework lies in its ability to integrate diverse actors in higher education into the context of wider societal forces

Building Research-Informed Teacher Education Communities: A UCET Framework

©UCET December 201

Measurement of the radial mode spectrum of photons through a phase-retrieval method

We propose and demonstrate a simple and easy-to-implement projective-measurement protocol to determine the radial index 'p' of a Laguerre-Gaussian (LGlp) mode. Our method entails converting any specified high-order LG0p mode into a near-Gaussian distribution that matches the fundamental mode of a single-mode fiber (SMF) through the use of two phase-screens (unitary transformations) obtained by applying a phase-retrieval algorithm. The unitary transformations preserve the orthogonality of modes and guarantee that our protocol can, in principle, be free of crosstalk. We measure the coupling efficiency of the transformed radial modes to the SMF for different pairs of phase-screens. Because of the universality of phase-retrieval methods, we believe that our protocol provides an efficient way of fully characterizing the radial spatial profile of an optical field

Unsteady Extinction of Opposed Jet Ethylene/Methane HIFiRE Surrogate Fuel Mixtures vs Air

A unique idealized study of the subject fuel vs. air systems was conducted using an Oscillatory-input Opposed Jet Burner (OOJB) system and a newly refined analysis. Extensive dynamic-extinction measurements were obtained on unanchored (free-floating) laminar Counter Flow Diffusion Flames (CFDFs) at 1-atm, stabilized by steady input velocities (e.g., U(sub air)) and perturbed by superimposed in-phase sinusoidal velocity inputs at fuel and air nozzle exits. Ethylene (C2H4) and methane (CH4), and intermediate 64/36 and 15/85 molar percent mixtures were studied. The latter gaseous surrogates were chosen earlier to mimic ignition and respective steady Flame Strengths (FS = U(sub air)) of vaporized and cracked, and un-cracked, JP-7 "like" kerosene for a Hypersonic International Flight Research Experimentation (HIFiRE) scramjet. For steady idealized flameholding, the 100% C2H4 flame is respectively approx. 1.3 and approx.2.7 times stronger than a 64/36 mix and CH4; but is still 12.0 times weaker than a 100% H2-air flame. Limited Hot-Wire (HW) measurements of velocity oscillations at convergent-nozzle exits, and more extensive Probe Microphone (PM) measurements of acoustic pressures, were used to normalize Dynamic FSs, which decayed linearly with pk/pk U(sub air) (velocity magnitude, HW), and also pk/pk P (pressure magnitude, PM). Thus Dynamic Flame Weakening (DFW) is defined as % decrease in FS per Pascal of pk/pk P oscillation, namely, DFW = -100 d(U(sub air)/U(sub air),0Hz)/d(pkpk P). Key findings are: (1) Ethylene flames are uniquely strong and resilient to extinction by oscillating inflows below 150 Hz; (2) Methane flames are uniquely weak; (3) Ethylene / methane surrogate flames are disproportionately strong with respect to ethylene content; and (4) Flame weakening is consistent with limited published results on forced unsteady CFDFs. Thus from 0 to approx. 10 Hz and slightly higher, lagging diffusive responses of key species led to progressive phase lags (relative to inputs) in the oscillating flames, and caused maximum weakening. At 20 to 150 Hz, diffusion-rate-limited effects diminished, causing flames to "regain strengnth," and eventually become completely insensitive beyond 300 Hz. Detailed mechanistic understanding is needed. Overall, ethylene flames are remarkably resilient to dynamic extinction by oscillating inflows. They are the strongest, with the notable exception of H2. For HIFiRE tests, the 64%/36% surrogate disproportionally retains the high dynamic FS of ethylene, so the potential for loss of scramjet flameholding (flameout) due to low frequency oscillations is significantly mitigated

Exploring local projects for sustainable energy in system transition: local perceptions of success

In the sustainability transitions literature, ‘success’ is conceived as the transition from an unsustainable system to a sustainable one. However, this view hides a more profound complexity in individual projects which can contribute to system transition. This paper focuses instead on local projects as key sites for change. In two case studies of UK sustainable energy projects, success is shown to be characterised by different causative beliefs held by different people about the problems being addressed, which predetermines solutions to those problems; and hence the nature of success. By acknowledging this multiplicity of success, as perceived by ordinary residents and project organisers as well as transition scholars, ‘narratives of success’ can be recognised, enabling future projects to build on success, and continue along the path to transition. This reconceptualisation provides transition scholars with new ways of understanding and effecting transitions; by focusing on the project level, which is useful in contexts with varying commitment to sustainability

The interdependent roles of the psychosocial predictors of human papillomavirus vaccination among Christian parents of unvaccinated adolescents

Despite the availability of the human papillomavirus (HPV) vaccine, uptake has been sub-optimal among certain religious groups. Psychosocial factors (threat appraisal, coping appraisal, and attitudes) have been identified as independent determinants of HPV vaccination. However, their interdependent effects have not been tested. We examined the interdependency of these psychosocial factors in predicting HPV vaccination intention among Christian parents of unvaccinated adolescents (using a theory-driven conceptual model). A cross-sectional study of 342 participants showed that perceived self-efficacy (β = 0.2, 0.11–0.29, p = \u3c0.0001) and perceived response efficacy of HPV vaccine (β = 0.65, 0.53–0.77. p \u3c .0001) were positively associated with vaccination intention. Our mediation analysis (using the Preachers and Hayes’ approach) shows that attitudes toward HPV vaccination mediated 59% of the relationship between perceived self-efficacy to vaccinate child and HPV vaccination intention; and 61% of the relationship between perceived response efficacy of HPV vaccine and HPV vaccination intention. Attitudes may be the psychosocial factor that drives the effects of coping appraisal. Therefore, designing an attitude-based intervention to address religious barrier beliefs among Christian parents may nullify the impact of low self-efficacy and response efficacy on HPV vaccination