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11.
Renato Schibeci Judith MacCallum Wendy Cumming‐Potvin Cal Durrant Barry Kissane Erica‐Jane Miller 《Learning, Media and Technology》2008,33(4):313-327
Teachers have a central role in developing new learning models in schools. This paper describes a study that explored teachers’ confidence and competence in using Information and Communication Technologies (ICT) as they participated in an ICT development project conducted by an Australian education system in 12 primary schools. The project aimed to develop ICT integrated teaching practices by providing in‐class equipment and teacher professional development in ICT use, curriculum development and teaching strategies. The study used qualitative data from teacher records of Professional Development and Action Learning to identify three of four stages proposed to describe teachers’ ICT learning. Teachers moved from gaining basic ICT skills, to conducting ICT‐focused lessons and eventually appropriate ICT integration. Teachers who progressed to the third stage were able to exploit additional learning opportunities and begin to make fundamental changes to their pedagogy, but needed more time to reach the final stage of challenging existing pedagogical structures. 相似文献
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Spatial context supports memory retrieval in adults. To understand the development of these effects, context effects on object recognition were tested in neurotypical children ages 3 years to adulthood (n 3–6 years = 34, n 10–16 years = 32, n college age = 22) and individuals with Down syndrome (DS) ages 10–29 years (n = 21). Participants engaged in an object recognition task; objects were presented in scenes and either remained in that same scene or were removed at test. In some groups (< 4.5 years and with DS) context effects were present even though object recognition was poor. After 4.5 years, children demonstrated memory flexibility, while later in adolescence context effects reemerged, showing nonlinearity in the development of these effects. 相似文献
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This study explores the impact of the team metaphor promoted by organizational “team talk” on individuals inexperienced in the organizational team environment. Qualitative data are used to identify metaphoric entailments that team novices associate with the team concept. Results are compared to similar data from more experienced team members from one team‐based organization. The study suggests that team novices share only a very general understanding of the team metaphor and strongly associate teams with sports activities. Novices' cognitive frameworks differ from each other and from more experienced team members and team experts in some important ways. Implications for the role of metaphoric illumination and reorientation in team development training are considered. 相似文献
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Cal M. Logue 《Communication Studies》2013,64(2):124-131
To ensure a winning cause, the majority may forfeit freedom of expression for security and prosperity. The more confident of conquest the greater the authority of establishment leaders and the lower the rhetorical status of followers. Empowered by promises of victory, to marshall resistance to William T. Sherman's advances through Georgia and to maintain their dominance, southern rhetors formulated three powerful controls: sanctification, distortion, and persuasive coercion. 相似文献
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Enrico Quagliarini Federica Bondioli Giovanni B. Goffredo Antonio Licciulli Placido Munafò 《Journal of Cultural Heritage》2012,13(2):204-209
The development and application of self-cleaning treatments on historical and architectural stone surfaces could be a significant improvement in conservation, protection and maintenance of Cultural Heritage. In this paper, a TiO2-based coating has been investigated in order to evaluate its possible use as a self-cleaning treatment. This coating was obtained by a sol-gel and a hydrothermal (134 °C) processes and then it was applied on travertine (a limestone often used in historical and monumental buildings) in two ways, obtaining a single-layer and a three-layer treatment, respectively. In order to verify its potential use in the field of Cultural Heritage, the maintenance of appearance properties of the treated travertine surfaces was monitored by colour and gloss analyses. Besides, de-pollution and soiling removal tests were carried out under ultraviolet-light exposure to evaluate photo-induced effects and self-cleaning efficiency. Results seem to allow the use of TiO2-based treatments on historical and architectural surfaces made up by travertine, where de-pollution and self-cleaning photo-induced effects are well evident, maintaining their original visual appearance. Anyway, before applying TiO2-based coatings as conservative treatments, further tests are needed especially on their durability, that is mandatory for Cultural Heritage applications. On-site test in an urban environment and accelerated test by weatherometer are currently under way. 相似文献
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Luca Paolo Ardigò Johnny Padulo Andrea Zuliani Carlo Capelli 《Journal of sports sciences》2015,33(17):1853-1858
This study aimed to apply a validated bioenergetics model of sprint running to recordings obtained from commercial basic high-sensitivity global positioning system receivers to estimate energy expenditure and physical activity variables during soccer refereeing. We studied five Italian fifth division referees during 20 official matches while carrying the receivers. By applying the model to the recorded speed and acceleration data, we calculated energy consumption during activity, mass-normalised total energy consumption, total distance, metabolically equivalent distance and their ratio over the entire match and the two halves. Main results were as follows: (match) energy consumption = 4729 ± 608 kJ, mass normalised total energy consumption = 74 ± 8 kJ · kg?1, total distance = 13,112 ± 1225 m, metabolically equivalent distance = 13,788 ± 1151 m and metabolically equivalent/total distance = 1.05 ± 0.05. By using a very low-cost device, it is possible to estimate the energy expenditure of soccer refereeing. The provided predicting mass-normalised total energy consumption versus total distance equation can supply information about soccer refereeing energy demand. 相似文献
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We present a microfluidic device capable of separating platelets from other blood cells in continuous flow using dielectrophoresis field-flow-fractionation. The use of hydrodynamic focusing in combination with the application of a dielectrophoretic force allows the separation of platelets from red blood cells due to their size difference. The theoretical cell trajectory has been calculated by numerical simulations of the electrical field and flow speed, and is in agreement with the experimental results. The proposed device uses the so-called "liquid electrodes" design and can be used with low applied voltages, as low as 10 V(pp). The obtained separation is very efficient, the device being able to achieve a very high purity of platelets of 98.8% with less than 2% cell loss. Its low-voltage operation makes it particularly suitable for point-of-care applications. It could further be used for the separation of other cell types based on their size difference, as well as in combination with other sorting techniques to separate multiple cell populations from each other. 相似文献
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This paper addresses the marketing approaches adopted by Knowledge-Intensive Business Services (KIBS) companies, whose main production factor and outcome is knowledge. Given the key role that client-provider cognitive interactions play in the provision of such services, the study adopts the conceptual framework of Service-Dominant (S-D) logic, that the recent literature considers being fully in line with the core characteristics of KIBS companies. Starting from the assumption that service is the fundamental basis of any economic exchange, this logic suggests a shift from the traditional ‘market to’ approach, which has been developed for tangible goods, to a ‘market with’ approach, where customers and providers collaborate along the whole marketing process. The research was carried out by means of a multiple case study of 20 small computer services companies in Italy, and aimed to understand if (and to what extent) the marketing initiatives of such companies are consistent with the S-D logic, and to discuss the major challenges that they have to face in order to follow the new logic. 相似文献
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2009年,约翰·霍普金斯大学医学院实施了一项全新的课程体系——"从基因到社会",其目的在于:更为宽泛地重构健康与疾病的相互关系,鼓励学生们在一个包含社会、文化、心理和环境等多维变量的综合系统中探索与患者的健康状况相关的生物学特性。本文描述了新课程的设计理念及其五年规划过程,包括课程目标的确定、课程的构建、新教学楼的建造、学生自身能力及教师发展的促进、横向和纵向结构的建立等。应对新课程挑战的关键因素在于:领导的支持、与教职员工的对话和沟通、不同群体和层面的广泛参与、避免井蛙之见、通过课程试点来测试教学理念和方法等。 相似文献