5,933 research outputs found

    Teacher Perspectives of Student Transitioning in Special Education from Correctional Facilities to Public Schools

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    The purpose of this study was to explore correctional special education teachers\u27 and public high school special education teachers \u27 perspectives of student transitioning from correctional facilities back to public schools. The point of interest was regarding what information these two groups of teachers believe to be important for transitioning to occur more smoothly from correctional education to the public schools. Surveys were distributed to the two groups of teachers. Respondents indicated the need for collaboration between correctional facilities and public schools. They also indicated the need for transference of information about the student prior to the student\u27s arrival in order to meet his/her educational needs and provide for a smoother transition

    Absolute continuity and spectral concentration for slowly decaying potentials

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    We consider the spectral function ρ(μ)\rho(\mu) (μ0)(\mu \geq 0) for the Sturm-Liouville equation y+(λq)y=0y^{''}+(\lambda-q)y =0 on [0,)[0,\infty) with the boundary condition y(0)=0y(0)=0 and where qq has slow decay O(xα)O(x^{-\alpha}) (a>0)(a>0) as xx\to \infty. We develop our previous methods of locating spectral concentration for qq with rapid exponential decay (JCAM 81 (1997) 333-348) to deal with the new theoretical and computational complexities which arise for slow decay

    Extensions of a New Algorithm for the Numerical Solution of Linear Differential Systems on an Infinite Interval

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    This paper is part of a series of papers in which the asymptotic theory and appropriate symbolic computer code are developed to compute the asymptotic expansion of the solution of an n-th order ordinary differential equation. The paper examines the situation when the matrix that appears in the Levinson expansion has a double eigenvalue. Application is made to a fourth-order ODE with known special function solution

    Birth size and breast cancer risk: Re-analysis of individual participant data from 32 studied

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    Background Birth size, perhaps a proxy for prenatal environment, might be a correlate of subsequent breast cancer risk, but findings from epidemiological studies have been inconsistent. We re-analysed individual participant data from published and unpublished studies to obtain more precise estimates of the magnitude and shape of the birth size–breast cancer association. Methods and Findings Studies were identified through computer-assisted and manual searches, and personal communication with investigators. Individual participant data from 32 studies, comprising 22,058 breast cancer cases, were obtained. Random effect models were used, if appropriate, to combine study-specific estimates of effect. Birth weight was positively associated with breast cancer risk in studies based on birth records (pooled relative risk [RR] per one standard deviation [SD] [= 0.5 kg] increment in birth weight: 1.06; 95% confidence interval [CI] 1.02–1.09) and parental recall when the participants were children (1.02; 95% CI 0.99–1.05), but not in those based on adult self-reports, or maternal recall during the woman's adulthood (0.98; 95% CI 0.95–1.01) (p for heterogeneity between data sources = 0.003). Relative to women who weighed 3.000–3.499 kg, the risk was 0.96 (CI 0.80–1.16) in those who weighed < 2.500 kg, and 1.12 (95% CI 1.00–1.25) in those who weighed ≥ 4.000 kg (p for linear trend = 0.001) in birth record data. Birth length and head circumference from birth records were also positively associated with breast cancer risk (pooled RR per one SD increment: 1.06 [95% CI 1.03–1.10] and 1.09 [95% CI 1.03–1.15], respectively). Simultaneous adjustment for these three birth size variables showed that length was the strongest independent predictor of risk. The birth size effects did not appear to be confounded or mediated by established breast cancer risk factors and were not modified by age or menopausal status. The cumulative incidence of breast cancer per 100 women by age 80 y in the study populations was estimated to be 10.0, 10.0, 10.4, and 11.5 in those who were, respectively, in the bottom, second, third, and top fourths of the birth length distribution. Conclusions This pooled analysis of individual participant data is consistent with birth size, and in particular birth length, being an independent correlate of breast cancer risk in adulthood

    Is the effect of birth weight on early breast cancer mediated through childhood growth?

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