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11.
Evidence strongly suggests that shared book reading at home and in preschool is important for young children's development of the foundational skills required for the eventual mastery of decoding and comprehension. Yet the nuances of how learning from book reading might vary across these contexts and with children's skills are not well understood. One hundred and thirty children participating in a longitudinal investigation of literacy development were videotaped reading a storybook with a parent. Children were also videotaped in their 33 preschool classrooms during the instructional book-reading portion of the day. Readings were coded for adult and child contextualized and decontextualized language relating to both decoding and meaning-making skills, and relations between this talk and emergent literacy outcomes were analyzed. Results demonstrate that parents and teachers overwhelmingly focus their book-related talk on meaning-related rather than code-related information, and that the relations between outcomes and talk depend in part on children's initial levels of vocabulary skills. Implications for practice and research are discussed.  相似文献   
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The so-called leaking STEM pipeline (dropout in STEM education) has been the subject of many studies. The large interest of scholars in plausible causes of this leakage has resulted in a number of meta-reviews describing factors at system, school and student level related to interest and persistence in STEM education. The STEM pipeline discussion has also resulted in a large number of programmes aimed at enhancing STEM interest and persistence in STEM education. Although these programmes have been widely evaluated, there seems to be no consensus about which interventions are successful in raising interest in STEM or persistence in STEM education. This study reports the results of a systematic review of empirical studies in which the effectiveness of STEM-related interventions are assessed. Initially, 538 studies were found. The quality analyses showed that only a few of these evaluation studies are designed in such a way that it is likely that the found effects are caused by the intervention. Although some potentially effective interventions were found, this review shows that there is still a need for research into the effectiveness of those programmes, especially with regard to programmes preventing talented and initially motivated STEM students to drop out of STEM education.  相似文献   
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OBJECTIVE: This article was developed to identify the variables associated with abuse of children in daycare centers and homes, and to specify risk factors to guide professionals and parents. METHOD: The literature regarding child abuse (physical [PA], sexual [SA], and ritual [RA]) was reviewed, with emphasis on identification of variables associated with victims, perpetrators, and settings. Three factors increased the complexity of the review: (1) differences in definition and categorization complicated study comparison; (2) emotional tone affected some reviewers' definitions, methodology, and conclusions; and (3) some aspects of child abuse in daycare homes and centers have not been well researched. RESULTS: PA most frequently occurred in the form of over discipline, was a response to prior conflict with the child, and may have been inadvertently supported by parental permission for corporal punishment. Although SA occurred less frequently in centers than in homes, effects on the victim seemed worse in centers. SA often included PA. A Satanic overtone was frequently associated with RA, and RA coupled with SA was most devastating. Unfortunately, effects were not temporary. Males predominated the perpetrator profile. Multiple perpetrator abuse was worse (e.g., severity of intrusion). Failure of center staff to report suspicion of abuse by fellow staff or parents was cited as a worry by several researchers. CONCLUSIONS: Although research regarding abuse in daycare settings is sparse, one cannot wait for more or better research in order to identify risk factors. Based on literature reviewed, the authors provide risk factors for faculty, caregivers, parents, children, and professionals.  相似文献   
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Abstract

Until recently, the physiological demands of cycling competitions were mostly reflected by the measurement of heart rate and the indirect estimation of exercise intensity. The purpose of this case study was to illustrate the varying power output of a professional cyclist during flat and mountain stages of a Grand Tour (Giro d'Italia). Nine stage recordings of a cyclist of the 2005 Giro d'Italia were monitored using a mobile power measurement device (SRM Trainingssystem, Julich, Germany), which recorded direct power output and heart rate. Stages were categorized into flat (n = 5) and mountain stages (n = 4). Data were processed electronically, and the overall mean power in flat and mountain stages and maximal mean power for various durations were calculated. Mean power output was 132 W ± 26 (2.0 W · kg?1 ± 0.4) for the flat and 235 W ± 10 (3.5 W · kg?1 ± 0.1) for the mountain stages. Mountain stages showed higher maximal mean power (367 W) for longer durations (1800 s) than flat stages (239 W). Flat stages are characterized by a large variability of power output with short bursts of high power and long periods with reduced intensity of exercise, whereas mountain stages mostly require submaximal, constant power output over longer periods.  相似文献   
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Within the natural sciences and engineering, literature relating to postgraduate education, in particular the process of completing a doctorate, remains generally scarce. That which does exist emphasises the role of the supervisor in effecting successful completion and points to a wide range of activities performed by supervisors. There remains, however, little by way of accounts of the actual experiences of supervisors or students when engaged in the process of doctoral supervision. It is these experiences which form the basis of this paper which focuses upon doctoral students and their supervisors in the disciplines of physics, mathematics and engineering science. Data for the paper have been collected, as part of an ESRC funded project, by means of in‐depth interviews with students and supervisors in nine universities in England. In particular, we address students expectations of PhD supervision, the extent to which expectations have been met, and within the context of the ‘career’ of the PhD, the ways in which supervision changes as the doctoral process progresses. Important issues relating to the need for training for PhD supervisors and their capacity to meet the expectations of their students are raised, together with those which question the relationship between the PhD and the culture of academic work.  相似文献   
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In Germany, Austria and Switzerland, the majority of 15?C19-year olds follow vocational education programmes within a dual-track system, spending most of their time in a company and going to school only 1?day each week. With their separate aims, content and sociological organisation, the company and the school can be considered as two distinct contexts within which apprentices have to acquire the various skills and competencies of their future occupation. In this paper, the development of apprentices?? learning intentions and motivation to learn, subjective competence, perceived utility of what is learned and estimated learning place attractiveness (study 1) as well as their readiness to seek help in these different contexts over the year of training (study 2) is analysed using both longitudinal and cross-sectional data. The findings show significant differences in apprentices?? motivation, their beliefs and their readiness to seek help in the different contexts throughout the training. Moderate (cross-different contexts, same time) as well as transcontextual (different contexts, different times) influences can also be seen. These results emphasise the importance of a careful delimitation of contexts when studying the impact of contextual factors on learners?? motivation and behaviours; they also suggest that motivation within one of these contexts can indirectly affect the learner??s motivation within another of these contexts. It is therefore likely that, by using these various dynamics appropriately, educators might temporarily sustain learners?? motivation in an unappreciated context by having recourse to a better accepted one.  相似文献   
18.
This study investigated relations between preschoolers’ emergent executive function skills and their interactions with parents, with particular focus on the verbal utterances parents use to guide children's behavior (i.e., management language). Parent–child dyads (n = 127) were videotaped during a structured play task and the frequency of two types of management language, Direction (high control) and Suggestion (low control), was observed. Children's executive function was assessed using the Head–Toes–Knees–Shoulders (HTKS) task. Latent growth modeling was used to investigate relations between management language and the development of children's executive function. Direction language (i.e., commands) was negatively associated with children's age three executive function but not significantly related to the rate of executive function development over time. Conversely, Suggestion language (i.e., questions and statements that offer children some degree of choice) was positively related to executive function at age three but negatively related to growth. The potential importance of management language as a parenting behavior that contributes to various aspects of children's self-regulation during preschool and kindergarten is discussed.  相似文献   
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Various studies report that cultural journalism increasingly focuses on service and entertainment instead of serious arts coverage. The press prioritizes popular culture over traditional high arts to a growing extent. However, this shift in journalistic attention does not necessarily signify a straightforward decline in aesthetic standards, as popular cultural forms like film have developed along the lines of high art principles in the past decades. This article charts trends in American, Dutch, French, and German film journalism between 1955 and 2005. It demonstrates that coverage is typified by a serious aesthetic approach from the 1970s onwards. The principles of art are seen to steer journalists’ attention to an important degree: the review remains the predominant journalistic genre, and newspapers devote more attention to films by prestigious directors than strictly commercial moviemakers. As such, film’s prominence in the press does not seem to indicate a decline in serious cultural journalism but rather a revaluation of a popular cultural form.  相似文献   
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