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排序方式: 共有163条查询结果,搜索用时 15 毫秒
91.
92.
Journal of Science Teacher Education - 相似文献
93.
We present a droplet-based microfluidic system for performing bioassays requiring controlled
analyte encapsulation by employing highly flexible on-demand droplet generation. On-demand droplet
generation and encapsulation are achieved pneumatically using a microdispensing pump connected to a
constant pressure source.
The system generates single droplets to the collection route only when the pump is actuated with a
designated pressure level
and produces two-phase parallel flow to the waste route during the stand-by state. We analyzed the effect of
actuation pressure on the
stability and size of droplets and optimized conditions for generation of stable droplets over a
wide pressure range. By
increasing the duration of pump actuation, we could either trigger a short train of identical size
droplets or generate a single larger droplet. We also investigated the methodology to control
droplet contents by fine-tuning flow rates or implementing a resistance bridge between the pump and main channels.
We demonstrated the integrated chip for on-demand mixing between two aqueous phases in droplets and
on-demand encapsulation of Escherichia coli cells. Our unique on-demand feature for
selective encapsulation is particularly appropriate for bioassays with extremely dilute samples,
such as pathogens in a clinical sample, since it can significantly reduce the number of empty
droplets that impede droplet collection and subsequent data analysis. 相似文献
94.
An ongoing research project has been focusing on the changing roles of colleagues based both in school and in college who are involved in the supervision of students in school and on their professional development needs. This article focuses on three elements of the research findings which we have obtained from the collation and analysis of the evaluations of the programmes so far. box Aspects of the training which have been most useful box Issues arising from the meetings of the mentor support groups box Implications for the continuing professional development and career development of the mentors The findings have been further informed by a series of semi‐structured interviews. 相似文献
95.
据《深圳特区报》报道,作为深圳大学城的标志性建筑之一,总投资2亿元的深圳大学城图书馆将于明年2月建成,成为深圳市第二大图书馆。 相似文献
96.
Anecdotal evidence and statistics indicate that transition to secondary school for children who are “Looked After” is likely to present challenges. The present study aimed to find out the key factors that support Looked After children through this transition, as perceived by the main stakeholders. Data were gathered in two stages, using semi-structured interviews, from Year 6 and Year 7 children and their teachers and carers. Analysis of the results indicates that many different factors may support or hinder the transition, ranging from within-child factors such as resilience and social skills to systemic factors such as the extent of multi-agency working and school admission policies. Four key principles emerged from the results, which may be used to inform tailored transition packages to support children in this vulnerable group through transition. They emphasise the importance of planning and information sharing between key stakeholders, minimising difference, and offering holistic and individualised support. 相似文献
97.
Although many studies have investigated citizens' attitudes toward polls and the political consequences, there have been no studies examining the effects of social network site (SNS) users' opinion environments on their poll skepticism. Based on prior studies on poll skepticism, we examine the relationship between perceived SNS opinion environments, poll skepticism, perceived concerns over the negative influence of the polls, and voting intention in an upcoming election. Using the survey data of the 2012 South Korean General Election, this study found that if the published polls are against respondents' political position, their homophilous SNS opinion environments promote poll skepticism, and augmented poll skepticism leads to concerns over the negative influence of the polls on other voters, which in turn increases voting intention. 相似文献
98.
June Bianchi 《The International Journal of Art & Design Education》2008,27(3):293-308
The article presents the rationale, methodology, and selected outcomes from More than a body's work, a collaborative, international, arts educational interactive research project. The project, taking place in both New York and England, explored the ways in which young people construct and ‘perform’ identity through the construction of their body and its appearance. The project's central intention was both to investigate diversity in young people's personal and cultural experience, and demonstrate their potential for creative engagement in mediating and expressing identity through a visual form. With its inclusive ethos, More than a body's work facilitated opportunities for young people who may not ordinarily have access to the arts to be partners in collaborative arts production, generating models of wider participation through innovative participatory approaches to visual art and interdisciplinary practice. The ongoing project is developmental, continuing to involve young people as participants, responding to the synthesis of local, national and international influences creatively deployed within youth culture. In considering More than a body's work's significance as a model for inclusive practice within art education, the article will discuss its strategies and its potential impact in relation to current initiatives and policies within the arts, culture and education. 相似文献
99.
In efforts to increase the field and society's understanding of bullying, the authors investigated how various forms of attachment (mother, peer, and school) are directly and indirectly related to bullying behavior through empathy, and whether these relationships are moderated by gender. Adolescents, of grades 7 through 9, from one middle school in Seoul were surveyed. Using structural equation modeling, the study identified significant gender differences in the direct and indirect effects of attachment on bullying behavior. For male students, greater school attachment was directly related to less bullying behavior and maternal and peer attachment had indirect effects on bullying behavior, mediated by student cognitive empathy. For female students greater maternal attachment was directly related to less bullying behavior, and peer attachment had an indirect effect on bullying behavior, mediated by student affective empathy. The study provides evidence supporting increased emphasis on empathy development in bullying prevention programs. 相似文献
100.
Allen MP Jacobs SK Levy J Pierce S Pravikoff DS Tanner A 《Medical reference services quarterly》2005,24(3):93-102
Do nurses have access to the tools and resources they need for evidence-based practice? Are librarians prepared to work with nurses to provide access to appropriate resources and services, and teach the needed information literacy skills? The authors work with professional library and nursing organizations to present interdisciplinary continuing education to improve the information literacy of nurses and the ability of librarians to provide resources and services that meet nurses' information needs. This article reviews behavioral and practice changes reported by nurses and librarian participants in symposia on evidence-based nursing in March 2001 and May 2003. 相似文献