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61.
62.
We investigated the effects of morphological awareness on five measures of reading in 103 children from Grades 1 to 3. Morphological awareness was assessed with a word analogy task that included a wide range of morphological transformations. Results indicated that the new measure had satisfactory reliability, and that morphological awareness was a significant predictor of word reading accuracy and speed, pseudoword reading accuracy, text reading speed, and reading comprehension, after controlling the effects of verbal and nonverbal ability and phonological awareness. Morphological awareness also explained variance in reading comprehension after further controlling word reading. We conclude that morphological awareness has important roles in word reading and reading comprehension, and we suggest that it should be included more frequently in assessments and instruction.  相似文献   
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64.
The purpose of this study was to examine American Catholics' attitudes regarding education about homosexuality. Participants were 1000 self‐identified Catholic adults who were interviewed via telephone. The majority of respondents agreed that Catholic colleges should offer courses on human sexuality, although religious and political conservatives were more likely to disagree that these courses should include education about justice and equality for gays and lesbians. Conservative and older respondents disagreed significantly more often that homosexuality should be included in tolerance teaching for children. Religious conservatives and males were less likely to agree that gays and lesbians should be hired as schoolteachers. The results indicate that the variables of Catholic ideology, political ideology, sex, age, and education are important in understanding the diversity of Catholics' views about these issues.  相似文献   
65.
The effects of a 20-session intervention targeting morphological word structure on vocabulary knowledge were investigated in four Grade 4 and 5 classes, assigned randomly to treatment and control conditions. Hierarchical regression analyses controlling for initial vocabulary showed significant instructional effects on morphological analysis and vocabulary with words that were taught directly and novel words built on bases that were taught in the context of other derivations, but not for words with untaught bases. Results indicated that the treatment group made better use of pre-test vocabulary knowledge in learning new vocabulary. Results are discussed in light of the growing debate regarding whether to teach many words in a shallow way or to provide deep, rich instruction about fewer words.  相似文献   
66.
Conditions of relative humidity (RH) and temperature within museums and buildings holding collections of cultural heritage objects are often maintained around a strictly controlled set point of about 50 ± 5% RH and 20 or 21 ± 2°C to provide safe, stable conditions for hygroscopic artifacts. It has recently been proposed that these ranges should be relaxed to values that are less energy-intensive to maintain while still being safe for the objects in the collection, with the aim of reducing both carbon footprint and energy use. It is also suggested that conditions should be determined by the needs of individual objects and by the local climate of the region, rather than applying overall values across the museum as a whole. This proposal has led to much discussion within the conservation community. The suggested values, a stable humidity within the range 40–60% RH and a stable temperature within the range 16–25°C for most objects, apart from the most vulnerable, are derived from the results of experimental research on the responses of individual materials to particular conditions of RH and temperature, as well as observations of the behaviour of cultural heritage objects in their own environments and on loan. This paper describes briefly the historical and scientific background to the present discussion.  相似文献   
67.
Because of their focus on psychological structures and operations, neo-Piagetian approaches to learning lend themselves to neurological hypotheses. Recent advances in neural imaging and educational technology now make it possible to test some of these claims. Here, we take a neo-Piagetian approach to mathematical learning in order to frame two studies involving the use of electroencephalography and functional magnetic resonance imaging imaging, as well as the use of iOS-based apps designed to elicit particular ways of operating with mathematics. Results could inform theories of mathematical learning and effective educational game design.  相似文献   
68.
Current microfluidic techniques for isolating circulating tumor cells (CTCs) from cancer patient blood are limited by low capture purity, and dielectrophoresis (DEP) has the potential to complement existing immunocapture techniques to improve capture performance. We present a hybrid DEP and immunocapture Hele-Shaw flow cell to characterize DEP''s effects on immunocapture of pancreatic cancer cells (Capan-1, PANC-1, and BxPC-3) and peripheral blood mononuclear cells (PBMCs) with an anti-EpCAM (epithelial cell adhesion molecule) antibody. By carefully specifying the applied electric field frequency, we demonstrate that pancreatic cancer cells are attracted to immunocapture surfaces by positive DEP whereas PBMCs are repelled by negative DEP. Using an exponential capture model to interpret our capture data, we show that immunocapture performance is dependent on the applied DEP force sign and magnitude, cell surface EpCAM expression level, and shear stress experienced by cells flowing in the capture device. Our work suggests that DEP can not only repel contaminating blood cells but also enhance capture of cancer cell populations that are less likely to be captured by traditional immunocapture methods. This combination of DEP and immunocapture techniques to potentially increase CTC capture purity can facilitate subsequent biological analyses of captured CTCs and research on cancer metastasis and drug therapies.  相似文献   
69.
Handwriting is a complex skill that, despite increasing use of computers, still plays a vital role in education. It is assumed that children will master letter formation at a relatively early stage in their school life, with handwriting fluency developing steadily until automaticity is attained. The capacity theory of writing suggests that as automaticity develops, the proportion of working memory dedicated to the mechanics of handwriting is reduced, releasing capacity for the planning, composing and editing of content. This study examined the handwriting ability of 284 mainstream primary school children and explored possible associated factors. Correlations were found between poor handwriting, lower cognitive and literacy scores, and a longer duration for handwriting tasks. Giving children the opportunity to practise their handwriting sufficiently to increase the level of automaticity may release working memory to be applied to the cognitive demands of the task and may potentially raise their level of attainment.  相似文献   
70.
We examined the effects of home literacy (shared book reading, teaching activities, and number of books), children's task-focused behavior, and parents' beliefs and expectations about their child's reading and academic ability on kindergarten children's (N = 61) phonological sensitivity and letter knowledge and on Grade 1 word reading. The results showed that, after controlling for nonverbal IQ and vocabulary, home literacy instruction prior to kindergarten, parents' beliefs about their children's reading ability, and children's task-focused behavior were significant predictors of two or more of the dependent variables. Storybook reading did not account for unique variance in any of the dependent variables.  相似文献   
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