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71.
Steve Mcdonald Libby Taylor Clive Adams 《Health information and libraries journal》1999,16(3):151-156
Journal coverage is one factor that affects the retrieval of relevant information from bibliographic databases. The aims of this study were to investigate the coverage of databases for psychiatry journals, and to assess the overlap between databases. Psychiatry journals were identified using Ulrich’s International Periodicals Directory and then analysed to see which bibliographic databases indexed the most journals. A total of 213 abstracting and indexing services were listed as indexing at least one of the 977 psychiatry journals identified. The four most frequently cited databases (PsycLIT, EMBASE, BIOSIS and MEDLINE) indexed 506 (52%) of the psychiatry journals. Of these 506 journals, PsycLIT indexed 367 (73%), EMBASE 337 (67%), BIOSIS 243 (48%) and MEDLINE 236 (47%). Combining the databases with the highest yields (PsycLIT and EMBASE) increased the number of journals indexed to 461 (91%). The four databases combined accounted for 90% of all psychiatry journals found to be indexed by at least one abstracting and indexing service. More than 400 journals were not indexed at all. Variations in the overlap between PsycLIT, EMBASE, BIOSIS and MEDLINE, and the high proportion (35%) of journals indexed in only one of these four databases emphasize the importance of searching more than one or even two databases to ensure optimal coverage of the literature. 相似文献
72.
Steve Paulussen 《Journalism Practice》2014,8(5):542-551
Social media are increasingly being used as sources in mainstream news coverage. Yet, while the research so far has focused mainly on the use of social media in particular situations, such as breaking news coverage, during crisis news events or in times of elections, little attention is paid to journalists' routine, day-to-day monitoring of social media platforms. The aim of this study is to examine the use and selection of social media as sources in routine newspaper coverage. First, it presents a quantitative overview of all the articles published between January 2006 and December 2013 in the print editions of two Flemish (north Belgian) quality newspapers, De Standaard and De Morgen, that explicitly refer to Facebook, Twitter or YouTube. Next, a content analysis is conducted of a sample of newspaper articles published in 2013 that explicitly mention Facebook, Twitter or YouTube as sources of information. The goal of this content analysis is to examine the different appearances and functions of social media references in the news. The study thus provides a first insight into Belgian newspaper journalists' regular sourcing routines in relation to social media. 相似文献
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75.
Maria Araceli Ruiz‐Primo Richard J. Shavelson Laura Hamilton Steve Klein 《科学教学研究杂志》2002,39(5):369-393
We propose a multilevel‐multifaceted approach to evaluating the impact of education reform on student achievement that would be sensitive to context and small treatment effects. The approach uses different assessments based on their proximity to the enacted curriculum. Immediate assessments are artifacts (students' products) from the enactment of the curriculum; close assessments parallel the content and activities of the unit/curriculum; proximal assessments tap knowledge and skills relevant to the curriculum, but topics can be different; and distal assessments reflect state/national standards in a particular knowledge domain. To provide evidence about the sensitivity of the multilevel approach in ascertaining outcomes of hands‐on science programs we administered close, proximal, and distal performance assessments to evaluate the impact of instruction based on two Full Option Science System units—Variables, and Mixtures and Solutions—in a Bay Area school district. Results indicated that close assessments were more sensitive to the changes in students' pre‐ to post‐test performance than proximal assessments. © 2002 Wiley Periodicals, Inc. J Res Sci Teach 39: 369–393, 2002 相似文献
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77.
The research set out in this paper attempts to identify whether one of three conventional IQ tests is more capable of identifying intellectual potential amongst poor children in Dar es Salaam. To this end 1857 children from 17 government schools in poor districts of Dar es Salaam were asked to complete a questionnaire and undertake a range of tests. The study included teacher, peer and self-nomination. It has been noted that static testing may not fully elicit the abilities of African children. It has been suggested that dynamic testing might provide a more fair and equitable means of assessment. Therefore 101 students took part in a control and intervention group in order to investigate. The findings show a significant correlation between IQ test scores and other test outcomes. Those with larger families and older children perform less well on IQ tests. Peer ability and self-confidence positively influence test scores. 相似文献
78.
In this article, we present an argument for consideration by those researching and promoting new learning environments (NLEs). We believe advocates of NLEs should consider the literature and research base indicating effective instruction is not based on a forced dichotomy between theoretical perspectives, but rather a thoughtful, pragmatic blending of practices based on evidence gained from various perspectives and lines of research. While unguided or minimally guided instructional approaches are popular and intuitively appealing, these approaches ignore substantial evidence indicating these approaches are less effective and less efficient than instructional approaches that incorporate guidance of the learning process that is faded as internal guidance is developed (Kirschner et al., Educ Psychol 41:75–86, 2006). We illustrate how integrating evidence from multiple theoretical perspectives leads to the development of more powerful approaches to learning and instruction through a review of the premises, evolution, and research behind Self-Regulated Strategy Development (SRSD) in the area of writing. 相似文献
79.
本文的后半部分展现社会认识论的实践层面.在这里笔者认为,有组织的探究,即维基词典中广义的"科学",仅仅在一种宏观经济学的框架内才能被证明是一种富有献身精神的追求.这个论点紧跟着这样的需要,即需要福利国家或市场社会主义来确保公共产品的稳定产生.即使我们假定(这个假定是有争议的)个体非常了解自身的利益所在,也不能由此断定他们足够充分地了解他人的利益,以至于确信他们将会协力生产出合适的知识,使得他们所有人都能够达到其目的. 相似文献
80.
Steve McCall Mike McLinden 《International Journal of Disability, Development & Education》2001,48(4):355-375
This paper considers the challenges that confront teachers wishing to develop literacy skills in children with complex needs and the issues which face those wishing to research this area. The article is based upon work undertaken by the authors in the United Kingdom into the use of the Moon tactile code to provide access to literacy for children who are blind and who have additional disabilities. Moon has become established as an option for developing the literacy of children who are blind in the UK and it has been estimated that around 100 children are using Moon in their schoolwork. A general overview of the use of Moon by children in the UK is reported upon in McCall and McLinden (2001) and a full report of the Moon research project and its outcomes can be found in McCall (2000). Here the authors reflect on some of the challenges that have emerged during their 10 years of investigation in this area. The reflections are presented under four broad headings: "Resourcing Literacy," "Defining the Population," "Defining Literacy," and "Evaluating Literacy." Each of these headings represents a cluster of issues that the authors consider that those with an interest in the development of literacy for children with complex educational needs will need to address. 相似文献