Teachers\u27 and students\u27 perceptions of the effectiveness of a middle school bully patrol

The purpose of this study was to investigate the effectiveness, as perceived by teachers and students, of the Glassboro Intermediate School\u27s Bully Patrol in reducing bullying for seventh and eighth grade students. The data gathering procedures were teacher and student surveys using the convenience sampling technique. The results of this study were based upon the analysis of the feedback that the teachers and students provided. The major conclusions of this study provided important insights into the Glassboro Intermediate School\u27s Bully Patrol. The data revealed that almost all of the teachers perceived the bully patrol to be effective in eliminating bullying behaviors. In addition, the majority of seventh grade students also believed the Bully Patrol to be a useful school-wide anti-bullying program. In contrast, a noteworthy portion of the eighth grade students, who generally were pessimistic about the school\u27s policies and programs, did not think that the Bully Patrol was very effective. Even so, the Bully Patrol continued to function at the Glassboro Intermediate School as a deterrent to bullying and bullying behaviors

Phase Transitions in the One-Dimensional Pair-Hopping Model: a Renormalization Group Study

The phase diagram of a one-dimensional tight-binding model with a pair-hopping term (amplitude V) has been the subject of some controvery. Using two-loop renormalization group equations and the density matrix renormalization group with lengths L<=60, we argue that no spin-gap transition occurs at half-filling for positive V, contrary to recent claims. However, we point out that away from half-filling, a *phase-separation* transition occurs at finite V. This transition and the spin-gap transition occuring at half-filling and *negative* V are analyzed numerically.Comment: 7 pages RevTeX, 6 uuencoded figures which can be (and by default are) directly included. Received by Phys. Rev. B 20 April 199

Laser frequency locking by direct measurement of detuning

We present a new method of laser frequency locking in which the feedback signal is directly proportional to the detuning from an atomic transition, even at detunings many times the natural linewidth of the transition. Our method is a form of sub-Doppler polarization spectroscopy, based on measuring two Stokes parameters ($I_2$ and $I_3$) of light transmitted through a vapor cell. This extends the linear capture range of the lock loop by up to an order of magnitude and provides equivalent or improved frequency discrimination as other commonly used locking techniques.Comment: 4 pages, 4 figures Revte

Development of a simplistic vegetative filter strip model for sediment and nutrient retention at the field scale

Vegetative filter strips (VFSs) are a commonly used conservation measure to remove pollutants from agricultural runoff. The effectiveness of VFSs has been widely studied at the plot scale, yet researchers generally agree that field scale implementations are far less effective. The purpose of this research was to develop a field scale VFS submodel for the Soil and Water Assessment Tool (SWAT). A model for the retention of sediments and nutrients in VFSs was developed from experimental observations derived from 22 publications. A runoff retention model was developed from Vegetative Filter Strip MODel (VFSMOD) simulations. This model was adapted to operate at the field scale by considering the effects of flow concentration generally absent from plot scale experiments. Flow concentration through 10 hypothetical VFSs was evaluated using high resolution (2 m) topographical data and multipath flow accumulation. Significant flow concentration was predicted at all sites, on average 10% of the VFS received half of the field runoff. As implemented in SWAT, the VFS model contains two sections, a large section receiving relatively modest flow densities and a smaller section treating more concentrated flow. This field scale model was incorporated into SWAT and verified for proper function. This model enhances the ability of SWAT to evaluate the effectiveness of VFSs at the watershed scale

Why They Come, Why They Go, and Why They Stay: Factors Affecting Volunteerism in 4-H Programs

The 4-H program depends on the work of thousands of adult volunteers. It seems prudent to understand more about the factors involved in an adult becoming a leader, factors contributing to the leader having a positive experience, and, in particular, the factors causing the leader to end his or her role. In order to better understand the experience of 4-H leaders and the factors contributing to their success, an exit survey was conducted with individuals who had terminated their leadership role. Key reasons for volunteering and leaving are identified

Dark Matter Caustics

Caustics are a generic feature of the nonlinear growth of structure in the dark matter distribution. If the dark matter were absolutely cold, its mass density would diverge at caustics, and the integrated annihilation probability would also diverge for individual particles participating in them. For realistic dark matter candidates, this behaviour is regularised by small but non-zero initial thermal velocities. We present a mathematical treatment of evolution from Hot, Warm or Cold Dark Matter initial conditions which can be directly implemented in cosmological N-body codes. It allows the identification of caustics and the estimation of their annihilation radiation in fully general simulations of structure formation.Comment: 6 pages, 1 figure, Accepted for publication in MNRAS, minor edit

Using Focus Groups to Evaluate Youth Development Program Direction

Focus groups are an efficient and effective assessment tool for youth development practitioners with limited time and resources. This article examines the practical use and limitations of focus groups to assess a county 4-H program\u27s response to a changing demographic profile. A complete description of the process is followed by a report of results and implications for program direction

ARG2 and NOS2 as predictive biomarkers in renal cell carcinoma

International audienc