This study used eye‐gaze analysis to determine the extent to which pre‐school children visually attended to print when looking at two storybooks, to contrast visual attention to print for a print‐salient versus a picture‐salient storybook, and to study individual differences in pre‐schoolers' visual preferences. Results indicated that pre‐school children infrequently attended to print: in a traditional picture‐salient storybook, 2.7% of their fixations focused on print and 2.5% of their time was spent looking in regions of print. The children fixated more frequently on print and spent more time looking in print regions when reading a print‐salient storybook, within which 7% of fixations focused on print and 6% of time was spent in print zones. Effect size estimates showed this difference to be consistent with a very large effect. Little variation in visual attention to print was observed across the ten children, and children's alphabet knowledge was not associated with the variance in children's visual attention to print. Educational implications are discussed. 相似文献
We run an Event History Analysis on a sample of Italian researchers in the field of Materials Science, aiming at understanding how the characteristics of the research trajectories followed by scientists in academia affect their opportunities to do development of industrial applications. Results of our estimates suggest that all measures of academic performances have a dual effect, although different in magnitude. Scientists that are moving along applied research trajectories find it easier to produce industrial applications than their colleagues engaged in the quest for very fundamental understanding. We interpret our results by suggesting that, for the former, more academic research results in more exploitable results, hence in more chances to patent; for the latter, more academic research makes it just more unlikely that they will find the time to produce industrial applications. Similar results apply for the low versus high research impact. 相似文献
Quality STEM teacher education is predicated on teacher educators who are well-equipped to design learning experiences, provide feedback, guide the development of teachers across their career span, and conduct rigorous research to advance education theory and praxis. While numerous models and approaches to professional development for teachers exist, few parallels can be drawn between the professional development of teachers and teacher educators (Loughran, 2014). To support the multi-faceted identity (trans)formation of STEM teacher educators, self-directed learning opportunities can help bridge knowledge and practice, enhance productive collaboration, and support efforts to negotiate multiple and conflicting agendas (Goodwin &; Kosnik, 2013). The purpose of this empirical study was to explore the identity (trans)formation of teacher educators participating in a long-term interdisciplinary STEM-based Community of Practice (CoP; Wenger, 1998), which began in 2012. An analysis of our experiences through the figured worlds lens informs how a CoP can impact curricular approaches and teacher PD, imploring members to move through their comfort zones into innovative spaces. We conclude with suggestions for our STEM teacher educator colleagues who seek opportunities to challenge their own positions and best support preservice and in-service STEM teachers in a way that allows them to model for their students the value of community.
The objective of this paper is to investigate the position of the resultant force in involute spline coupling teeth due to the contact pressure distribution for both ideal and misaligned conditions. In general, spline coupling teeth are in contact all along the involute profile and the load is far from uniform along the contact line. Theoretical models available in publications consider the resultant contact force as it is applied at the pitch diameter, and this study aims to evaluate the error introduced within the confines of a common approximation environment. This analysis is carried out through using finite element method (FEM) models, considering spline couplings in both ideal and misaligned conditions. Results show that the differences between the load application diameter and pitch diameter are not very obvious in both ideal and misaligned conditions; however, this ap- proximation becomes more important for the calculation of the tooth stiffness. 相似文献
Congenital Cytomegalovirus (CMV) infection and alpha 1-antitrypsin (A1AT) deficiency are separately well described entities, but their simultaneous occurrence can pose a special challenge to a clinician, especially dealing with optimal diagnostic as well as therapeutic approach. Congenital CMV infection is the most common vertically transmitted infection in developed countries. In 85–95% of newborns it runs asymptomatic, while in others it is presented with jaundice, petechias, hepatosplenomegaly and central nervous system damage. A1AT deficiency is on the other hand, the most common genetic liver disease in children, and the clinical spectrum varies from the accidentally detected increased levels of transaminases through to the severe infant cholestasis that can progress to cirrhosis. The following case report describes a two-month old male with severe clinical presentation of congenital CMV infection probably exacerbated due to A1AT deficiency comorbidity. The clinical manifestations and unusually difficult clinical signs this infant presented lead to assumption that the additional liver damage exists. Extensive laboratory analyses were performed, including PCR for CMV DNA, A1AT serum concentration, A1AT genotyping, followed and confirmed with phenotyping. Patient was treated parenteral with ganciclovir, what continued with oral valganciclovir and supportive therapy. Intensive and thorough supportive treatment of the infant resulted in satisfactory progress and excellent outcome. Patient was followed-up till the age of 18 months. The presented case provides excellent example about successful overcoming obstacles in differential diagnosis of A1AT in neonates and infants. Medical charts analysis was the methodology used in making this report. 相似文献
The concept of open innovation captures the increasing propensity of firms to work across their traditional boundaries of operation. This phenomenon has largely been studied from the viewpoint of manufacturing businesses while services have received much less attention despite the predominant role they play in advanced economies. This paper focuses on open innovation in services, both as a subsector of the economy and as a component of the activities of manufacturing firms. We study the open innovation practices of business services firms and then consider the implications for open innovation of the adoption of a service inclusive business model by manufacturing firms. Our analyses are based on a unique dataset with information on open innovation activities amongst UK firms. Overall, engagement in open innovation increases with firm size and R&D expenditure. Business services are more active open innovators than manufacturers; they are more engaged in informal relative to formal open innovation practices than manufacturers; and they attach more importance to scientific and technical knowledge than to market knowledge compared to manufacturing firms. Open innovation practices are also associated with the adoption of a service inclusive business model in manufacturing firms and service-integrated manufacturers engage in more informal knowledge-exchange activities. The paper contributes towards a reconceptualisation of open innovation in service businesses and a deeper evidence-based understanding of the service economy. 相似文献
Local television news remains a primary news source for Americans and is a key source of consumer health information. This study explores why local television health journalists cover particular topics and assesses why health journalism newsgathering practices often differ from the normative newsgathering practices of general assignment reporters. Fifteen in-depth telephone interviews were conducted with health journalists from varying geographical regions and media markets. Influence from local hospitals and personal interest in a health topic often determined the health content the journalists produced. Journalists said it was difficult to cover health issues in addition to other newsroom responsibilities. 相似文献