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ABSTRACT Research on media substitution theory has examined substitutional and/or complementary relationships between new and existing media. This study focuses on the growth of mobile platforms and investigates the relationship between mobile devices and personal computers. Using Nielsen’s panel data that provide electronically recorded media usage (N = 2,396), this study analyzes yearly changes in time allocation to mobile devices and PCs at total and content-specific usage levels during mobile 4G transition. Results suggest a complementarity dynamic between mobile devices and PCs; however, the patterns were more nuanced in light of the role of individual and structural factors when determining media choice. 相似文献
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Today's teacher education programmes across the world strive to equip future teachers with the high‐quality knowledge, skills and dispositions necessary to teach students. The assessment of teacher dispositions has thus become essential to cultivate those qualities. However, the current approach to disposition assessment in the United States focuses on personal characteristics and character‐related dispositions and is frequently used as a sorting device to identify those who appear to be inadequately disposed to teaching. Expanding on earlier work by the author and colleagues, this paper examines the issue of whether more efforts should be made to incorporate elements to assess competence‐related dispositions in conjunction with the character‐related dispositions across assessment tools and, if so, how this could be accomplished. In addition, this paper will clarify some dispositional concepts and terms used interchangeably that actually differ from one another and can confuse the consistency of disposition assessment. Finally, a framework for assessing technology disposition as an example of competence‐related disposition and for broadening the focus of disposition assessment is suggested. 相似文献
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This study examined the variables associated with student satisfaction on a commuter campus. A sample of 38 classes was used and resulted in 782 undergraduates responding to questionnaires. The variables included were: age, student level, student's grade, perception of educational benefits, and satisfaction with college experience. A causal model was built and tested in order to determine the direct and indirect effects of these variables upon student satisfaction. While the student level had a negative influence upon satisfaction, both age and grade had a moderate effect upon student satisfaction. The perception of educational benefits seemed to be the most critical variable in predicting student satisfaction. 相似文献
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Sung Eun Jung Kyunghwa Lee 《British journal of educational technology : journal of the Council for Educational Technology》2021,52(1):394-410
This qualitative case study explores a 6-year-old boy’s dialogic appropriation of programmable robots. The study was conducted in two robotics education programs for children aged four to seven. Drawing on Bakhtin’s (1981) notion of appropriation, we found that the focal child actively engaged with the programmable robots by (1) transforming the given features of the robots, (2) hybridizing the programming practice with the ordinary practices of his peer culture and (3) constructing his own perspective on the agency of robots and the meaning of programming. We argue that the ways in which the focal child engaged with the programmable robots went beyond mere adoption of the robots but rather took the form of dialog. 相似文献
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Shadow education contributes to the learning and academic careers of Korean students. It benefits, in particular, gifted students who are strongly motivated and who outperform their peers academically. In this study, we explored the innovative characteristics of shadow education curricula for gifted students in terms of curricular programmes, methods, and teaching-learning materials. Also, we explored how shadow education practices meet the academic abilities and needs of students. Informed by a literature review and qualitative research methods, the results reveal how common shadow education is; effects of shadow education; and innovative elements used in shadow education for gifted students in Korea. Overall, we found that shadow education plays a crucial role in gifted education; it is a necessary component for understanding academic excellence among students in Korea. The findings are helpful for teachers, curriculum developers, and policymakers as they explore how public schooling can help to support strongly motivated and academically advanced students. 相似文献
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This work proposes the use of charged droplets driven by the Coulombic force as solution-phase reaction chambers for biological microreactions. A droplet can be charged near an electrode under dc voltage by direct contact to the electrode. This process is called electrical charging of droplet (ECOD). This charged droplet can then be transported rapidly between electrodes following the arc of an electric field line by exploiting electrostatic force. As on-demand electrocoalescence, both alkalization of phenolphthalein and bioluminescence reaction of luciferase in the presence of adenosine triphosphate are studied to test the feasibility of the biochemical microreactors using ECOD. Two oppositely charged droplets are merged to have a color change immediately after microchemical reaction. The applicability of an ECOD-driven droplet to measurement of glucose concentration is also tested. The glucose concentration is measured using a colorimetric enzyme-kinetic method based on Trinder’s reaction [J. Clin. Pathol. 22, 158 (1969)]. The color change in the merged droplet is detected with an absorbance measurement system consisting of a photodiode and a light emitting diode. 相似文献
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Forward citations of patents have been used extensively to capture the impact of technological knowledge. However, our understanding of the factors shaping patent citation patterns remains limited. One of the main limitations is the lack of scholarly attention paid to the dynamic influences arising from the evolution of technology fields. From an evolutionary perspective, technological impact is not simply determined by the static attributes of a technology itself; it is also dynamically affected by changes in the external conditions. Drawing on this viewpoint, this study suggests a model for understanding patent citation patterns by reflecting the evolution of the technology fields to which each patent belongs. Four such factors are explored: technology cycle time, potential of technological convergence, popularity of the technology field, and technological novelty. Based on the proposed model, we show how expected citation patterns can change as a result of different scenarios for technology field evolution. We conduct a case study of patents in the information technology and healthcare industries to show citation patterns of patents across heterogeneous industries as well as those within an industry. Contributions to the innovation literature and research investment decisions are discussed. 相似文献