507 research outputs found
Teacher Perceptions of Parent Involvement in Literacy Education
Parent involvement appears to hold great potential for the improvement of literacy education. Without the coordination and support ofthe classroom teacher, however, the effects of such involvement may not be maximized. A question central to the development of parent involvement programs is, Do teachers recognize and support parent involvement as a significant component of children\u27s education? The purpose of this informal study was to describe perceptions of parent involvement in literacy education. Over sixty teachers from a cross section of schools in a Midwestern metropolitan area were interviewed in depth about their attitudes toward parent involvement in reading. A structured interview combining closed and open-ended questions was used to gather data. Results indicated that teacher perceptions of what constitutes parent involvement differed by grade level. Over 90 percent of the teachers recognized the importance of involving parents. Less than 5 percent, however, supported involving parents as partners. Teacher perceptions of the role of parents appeared to restrict involvement and limit dialogue
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âRighteous Mindsâ in Health Care: Measurement and Explanatory Value of Social Intuitionism in Accounting for the Moral Judgments in a Sample of U.S. Physicians
The broad diversity in physiciansâ judgments on controversial health care topics may reflect differences in religious characteristics, political ideologies, and moral intuitions. We tested an existing measure of moral intuitions in a new population (U.S. physicians) to assess its validity and to determine whether physiciansâ moral intuitions correlate with their views on controversial health care topics as well as other known predictors of these intuitions such as political affiliation and religiosity. In 2009, we mailed an 8-page questionnaire to a random sample of 2000 practicing U.S. physicians from all specialties. The survey included the Moral Foundations Questionnaire (MFQ30), along with questions on physiciansâ judgments about controversial health care topics including abortion and euthanasia (no moral objection, some moral objection, strong moral objection). A total of 1032 of 1895 (54%) physicians responded. Physiciansâ overall mean moral foundations scores were 3.5 for harm, 3.3 for fairness, 2.8 for loyalty, 3.2 for authority, and 2.7 for sanctity on a 0â5 scale. Increasing levels of religious service attendance, having a more conservative political ideology, and higher sanctity scores remained the greatest positive predictors of respondents objecting to abortion (ÎČâ=â0.12, 0.23, 0.14, respectively, each p<0.001) as well as euthanasia (ÎČâ=â0.08, 0.17, and 0.17, respectively, each p<0.001), even after adjusting for demographics. Higher authority scores were also significantly negatively associated with objection to abortion (ÎČâ=ââ0.12, p<0.01), but not euthanasia. These data suggest that the relative importance physicians place on the different categories of moral intuitions may predict differences in physiciansâ judgments about morally controversial topics and may interrelate with ideology and religiosity. Further examination of the diversity in physiciansâ moral intuitions may prove illustrative in describing and addressing moral differences that arise in medical practice.</p
Damage and deuterium retention of re-solidified tungsten following vertical displacement event-like heat load
AbstractSurface morphology and hydrogen isotope retention of W specimen melted with vertical displacement event-like heat load and subsequent deuterium (D) plasma exposure were studied. Applied heat loads using electron beam without raster scanning were about 190 and 230 MW/m2 in heat flux and 0.08, 0.12 and 0.16s in duration. After the heat load application, specimens showed apparent melting spots with grain growth or dense micrometer scale convex structure. Cracks were observed only in the part with the convex structure. D retention in the melted part of specimens was not significantly larger than in the reference specimen despite large changes of surface characteristics
Optimization of single crystal mirrors for ITER diagnostics
Diagnostic mirrors are planned to be used in all optical diagnostics in ITER. Degradation of mirrors due to e.g. deposition of plasma impurities will hamper the entire performance of affected diagnostics. in situ mirror cleaning by plasma sputtering is presently envisaged for the recovery of contaminated mirrors. There are observations showing a signature of sputtering dependence on crystal orientation. Should such a dependence exist, the sputtering of single crystal mirrors could be minimized, thus prolonging a mirror lifetime. Four single crystal molybdenum mirrors with different orientations were produced to study the effect of crystal orientation on sputtering. Mirrors were exposed to argon plasma under identical plasma conditions relevant to those expected in the mirror cleaning systems of ITER. The energy of impinging ions was about 60 eV. The amount of sputtered material corresponded to about a hundred mirror cleaning cycles in argon. Plasma exposures did not affect the mirror reflectivity. The maximum decrease of specular reflectivity did not exceed 5% at 250 nm. The mirrors with orientations [110]/[101] demonstrated up to 42% less sputtering than the mirrors with other crystal orientations. These findings outline the advantage of a favorable crystal orientation for a cleaning of heavy contaminants from ITER mirrors.Peer reviewe
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