Urban Regimes,Intermediary Organization Networks,and Research Use: Patterns Across Three School Districts     

Janelle Scott  Elizabeth DeBray  Christopher Lubienski  Priya Goel La Londe  Elise Castillo  Stephen Owens 《Peabody Journal of Education》2017,92(1):16-28

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A concept map approach to developing collaborative Mindtools for context‐aware ubiquitous learning     

Gwo‐Jen Hwang  Yen‐Ru Shi  Hui‐Chun Chu 《British journal of educational technology : journal of the Council for Educational Technology》2011,42(5):778-789

Recent advances in mobile and wireless communication technologies have enabled various new learning approaches which situate students in environments that combine real‐world and digital‐world learning resources; moreover, students are allowed to share knowledge or experiences with others during the learning process. Although such an approach seems to be promising and innovative, researchers have indicated several problems when applying it to practical applications, in particular, the lack of proper strategies or tools to assist the students to learn collaboratively in such a learning scenario with abundant content. Students might feel interested when using the mobile devices to learn; however, without proper assistance or guidance, their learning achievements are usually disappointing. To cope with this problem, this study proposes a concept map‐oriented Mindtool for collaborative ubiquitous learning. Experimental results from a natural science course in an elementary school show that this approach not only enhances learning motivation but also improves the learning achievements of the students.  相似文献   

技术并不会消除数字鸿沟     

简·什拉迪  吴万伟 《青年记者》2011,(34)

最近几年,像美国许多城市一样,莫德斯托(Modesto)也一直遭到媒体裁员和开支削减的冲击.记者的责任比从前更大了,他们越来越多地依靠微博、Facebook、博客、谷歌等采集新闻和报道.在这种数字转变之前,记者对美国贫穷的工人阶级的报道不仅偏少而且往往是脸谱化的或遭到扭曲的.如今,社交媒体使更多公民参与到地方新闻的制作和传播中来.这种新平台能帮助被边缘化的声音更好地在媒体上展现吗?  相似文献   

Three-dimensional cellular focusing utilizing a combination of insulator-based and metallic dielectrophoresis     

Huang CT  Weng CH  Jen CP 《Biomicrofluidics》2011,5(4):44101-4410111

Particle focusing in microfluidic devices is a necessary step in medical applications, such as detection, sorting, counting, and flow cytometry. This study proposes a microdevice that combines insulator-based and metal-electrode dielectrophoresis for the three-dimensional focusing of biological cells. Four insulating structures, which form an X pattern, are employed to confine the electric field in a conducting solution, thereby creating localized field minima in the microchannel. These electrodes, 56-μm-wide at the top and bottom surfaces, are connected to one electric pole of the power source. The electrodes connected to the opposite pole, which are at the sides of the microchannel, have one of three patterns: planar, dual-planar, or three-dimensional. Therefore, low-electric-field regions at the center of the microchannel are generated to restrain the viable HeLa cells with negative dielectrophoretic response. The array of insulating structures aforementioned is used to enhance the performance of confinement. According to numerical simulations, three-dimensional electrodes exhibit the best focusing performance, followed by dual-planar and planar electrodes. Experimental results reveal that increasing the strength of the applied electric field or decreasing the inlet flow rate significantly enhances focusing performance. The smallest width of focusing is 17 μm for an applied voltage and an inlet flow rate of 35 V and 0.5 μl/min, respectively. The effect of the inlet flow rate on focusing is insignificant for an applied voltage of 35 V. The proposed design retains the advantages of insulator-based dielectrophoresis with a relatively low required voltage. Additionally, complicated flow controls are unnecessary for the three-dimensional focusing of cells.  相似文献   

African American preschool children's physical activity levels in Head Start     

Shen B  Reinhart-Lee T  Janisse H  Brogan K  Danford C  Jen KL 《Research quarterly for exercise and sport》2012,83(2):168-174

The purpose of this study was to describe the physical activity levels of urban inner city preschoolers while attending Head Start, the federally funded preschool program for children from low-income families. Participants were 158 African American children. Their physical activity during Head Start days was measured using programmed RT-3 accelerometers. Results revealed that the children spent the most time in sedentary and light physical activity, while their participation in moderate-to-vigorous physical activities was low. Given the sedentary class format and limited physical space for the Head Start programs observed, we suggest adding a structured physical activity component to Head Start schools to fight the overweight and obesity crisis.  相似文献   

Sex,Love, and Risk-n-Responsibility: A Content Analysis of Entertainment Television     

Francesca R. Dillman Carpentier  Elise M. Stevens  Lu Wu  Natalee Seely 《Mass Communication and Society》2017,20(5):686-709

This study documents the extent of sexual content, including sexual health content, in scenes with and without expressions of love on network and cable television popular with emerging adults. Sexual talk and/or behavior was found in 20% of all television scenes coded across 53.5 hours of programming. One third of these scenes featured sex alongside expressions of love. An additional 10% of scenes suggested love but not sex. Coded as a separate category, 25% of analyzed scenes contained a passing joke or pun referencing sexual organs, making these nonspecific, comedic one-liners the predominant reference to sex in this sample. Beyond jokes, most of the sexual or loving talk in this sample consisted of expressing a romantic interest in someone; sex- and love-related behaviors largely consisted of kissing or flirting. Very few scenes specifically referenced sexual intercourse. Sexual health messages were also rare. The majority of scenes mentioning any health consequence (7% of analyzed scenes) concerned emotional heartache. One scene mentioned sexually transmitted infections; 12 of the nearly 2,600 scenes coded mentioned condoms or contraceptives. It is thus a challenging proposition to build upon existing sexual depictions on television to promote safe sex practices within sexual and loving contexts.  相似文献   

Relationships between study activities and achievement as a function of grade level and course characteristics     

Robert G. Curley  Elise Trumbull Estrin  John W. Thomas  William D. Rohwer  Jr. 《Contemporary educational psychology》1987,12(4)

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Planning and presenting career development seminars     

Thom D. Rakes  Ann Elise Parkhurst 《Journal of Career Development》1986,13(1):30-38

Summary An overview of the seminar planning process that includes needs assessment, program planning, implementation and evaluation has been presented. In addition, necessary platform skills have been identified to help staff members move from the role of planner to that of presentor. With training, either in counselor education programs or as a part of staff development, career counselors can provide a higher quality service to a larger number of students by learning more about the science and art of seminar planning and presentation.  相似文献   

Towards emotion awareness tools to support emotion and appraisal regulation in academic contexts     

Lavoué  Elise  Kazemitabar  Maedeh  Doleck  Tenzin  Lajoie  Susanne P.  Carrillo  Rubiela  Molinari  Gaëlle 《Educational technology research and development : ETR & D》2020,68(1):269-292

Educational technology research and development - This paper studies learners’ emotion awareness in university level academic contexts as a first step to help learners regulate their...  相似文献   

The veridicality of punitive childhood experiences reported by adolescents and young adults     

Prescott A  Bank L  Reid JB  Knutson JF  Burraston BO  Eddy JM 《Child abuse & neglect》2000,24(3):411-423

OBJECTIVE: The primary goal of the present research was to determine whether retrospective reports of childhood disciplinary experiences and perceptions of that discipline correspond to actual childhood events and whether the accuracy of that report was influenced by the affective state of the respondent. METHOD: Eighty-three adolescent and young adult males completed a retrospective measure of physical child maltreatment, Assessing Environments (AEIII), and the Brief Symptom Inventory (BSI). As children the participants had been observed naturalistically in their homes interacting with their parents an average of 10 years earlier. RESULTS: Analyses were consistent with the hypothesis that both current mood and actual observations of parent-child interactions during childhood predict self-reported recollections of childhood maltreatment by one's parents. Further the veridicality of such recollections appears to depend upon the objective specificity versus the perceptive nature of the questions used to elicit the recollections. CONCLUSIONS: The findings suggest that assessment instruments suitable for obtaining information regarding earlier childhood victimization must utilize behaviorally specific items. Thus, items that are either global or intimate a normative comparison should be avoided.  相似文献