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41.
Robert V. Bullough Jr Roni Jo Draper Lynnette Erickson Leigh Smith Janet Young 《Educational Action Research》2013,21(3):433-454
Seeking to soften the gap between clinical and tenure-track teacher education faculty, a year-long action research seminar was conducted. Using data from observation notes, interviews and a taped seminar session, the authors explore the seminar from its very rocky beginning to its conclusion. Drawing on the concept of ‘communities of practice’, the authors explore reasons for the hesitancy of the clinical faculty to share the results of their studies and their struggle to find legitimacy within the university. 相似文献
42.
By Walter C. Allan Jeryl L. Erickson Phil Brookhouse and Judith L. Johnson 《TechTrends》2010,54(6):36-43
Maine’s one-to-one laptop program provides an ideal opportunity to explore conditions that optimize teacher integration of
technology-focused curriculum into the classroom. EcoScienceWorks (ESW) is an ecology curriculum that includes targeted simulations
and a code block programming challenge developed through an NSF-ITEST grant. The project was designed as a collaboration that
included simulation software developers; middle school science teachers; the Maine laptop program; environmental educators;
an external evaluator; and a lead organization experienced in teacher guided curriculum development. Thus, each of the elements
of TPACK (technology, pedagogy, and content knowledge) worked together to produce the final ecology simulation-centered curriculum.
In 2008–2009, the ESW curriculum became available statewide through the Maine laptop program. Partner teachers have transitioned
their classrooms to more learning-centered environments through the use of technology and have become teacher leaders. The
collaborative approach to technology focused curriculum development used in this project is a model for TPACK professional
development. 相似文献
43.
44.
Patricia Noonan Amy Gaumer Erickson Zach McCall Bruce B. Frey Chunmei Zheng 《Educational Assessment, Evaluation and Accountability》2014,26(3):301-316
Improving collaboration among organizations is a goal of interagency educational teams, but collaboration is typically thought of as an ambiguous concept that cannot be quantified. To assess the collaborative strength of a state-level interagency team in a Midwestern state, team members completed the Levels of Collaboration Scale (Frey et al., American Journal of Evaluation 27(3):383, 2006) for three consecutive years. The team members then utilized the results of the social network analysis to support and sustain collaborative efforts. Findings revealed that the number of partnerships increased and the depth of collaboration expanded across the 3 years. Social network analysis results were utilized to develop collaboration strategies, thus influencing the expansion of the network across the 3-year period. 相似文献
45.
Jae-Woo Choi Seyyed Mohammad Hosseini Hashemi David Erickson Demetri Psaltis 《Biomicrofluidics》2014,8(4)
We present a method to perform sample concentration within a lab-on-a-chip using a microfluidic structure which controls the liquid-gas interface through a micropillar array fabricated in polydimethylsiloxane between microfluidic channels. The microstructure confines the liquid flow and a thermal gradient is used to drive evaporation at the liquid-gas-interface. The evaporation occurs in-plane to the microfluidic device, allowing for precise control of the ambient environment. This method is demonstrated with a sample containing 1 μm, 100 nm fluorescent beads and SYTO-9 labelled Escherichia coli bacteria. Over 100 s, the fluorescent beads and bacteria are concentrated by a factor of 10. 相似文献
46.
David L. Erickson 《The Journal of environmental education》2013,44(4):17-20
Abstract In order to determine the effects of sex, grade level, region, and academic preparation on energy opinions, selected items from Kuhn's revision of Wert's Energy Opinionnaire were constructed into a criterion measure on total score and three sub-scale scores. The Ss were 251 secondary school students from two regions of the country and an academically prepared class of secondary students enrolled in a course entitled “Science and the Economics of Energy.” The data were analyzed first to compare selected chi-square results of the study with results reported by Kuhn and to compare Alpha Statements. The second phase included the use of ANOVA and Scheffe Comparisons. In general, there were significant differences in ANOVA results by sex, region of the country and, to some extent, academic preparation. There were no significant results by grade level or conservation. 相似文献
47.
Sharon J. Derry Roy D. Pea Brigid Barron Randi A. Engle Frederick Erickson Ricki Goldman 《学习科学杂志》2013,22(1):3-53
Linking research to a compelling societal interest can build financial commitments to research, bring increased attention to findings, and grow support for scaling up impacts. Among many compelling societal interests that learning scientists can cite—such as increasing the quality of life, preparing citizens to make decisions in a complex world, and enhancing social cohesion among a diverse population—economic competitiveness is a compelling societal interest that resonates broadly among stakeholders. Indeed, it is now somewhat common to introduce learning sciences research, as in the Cambridge Handbook of the Learning Sciences and the U.S. National Education Technology Plan, by citing economic rationales. Despite the utility of evoking a potential link between learning research and economic competitiveness in the minds of broader audiences, learning scientists engage in rather little critical discussion of whether such links are meaningful and empirically sound within their own programs of research. This article seeks both to problematize conventional wisdom about links between learning sciences research and economic growth and to suggest possible directions for future research aimed at discovering stronger links. Because the issues are complex, we do not reach firm conclusions. Rather, this article seeks to spark a discussion within the field. 相似文献
48.
Vetta Vratulis Tony Clarke Garry Hoban Gaalen Erickson 《Teaching and Teacher Education》2011,27(8):1179-1188
The purpose of this study was to explore the experiences of 35 preservice teachers as they were introduced to a new digital technology, “Slowmation” (abbreviated from Slow Animation), as a “disruptive” pedagogy over a period of 12 months. The participants in the study were 35 preservice teachers from an elementary cohort. Primary data sources included field notes and semi-structured interviews. Findings revealed that the preservice teachers enjoyed using slowmation as learners during the on-campus part of their program, yet very few used it as a disruptive pedagogy when teaching during their extended practicum. Our study highlights the challenges inherent in introducing “disruptive” pedagogies in a teacher education program. 相似文献
49.
Paige E. Rice Courtney L. Goodman Christopher R. Capps N. Travis Triplett Travis M. Erickson Jeffrey M. McBride 《European Journal of Sport Science》2017,17(3):286-293
The purpose of this study was to compare force– and power–time curve variables during jumping between Division I strength-matched male and female basketball athletes. Males (n?=?8) and females (n?=?8) were strength matched by testing a one-repetition maximum (1RM) back squat. 1RM back squat values were normalised to body mass in order to demonstrate that strength differences were a function of body mass alone. Subjects performed three countermovement jumps (CMJ) at maximal effort. Absolute and relative force– and power–time curve variables from the CMJs were analysed between males and females. Average force– and power–time curves were generated for all subjects. Jump height was significantly greater (p?≤?.05) in males than females. Absolute force was higher in males during the concentric phase, but not significantly different (p?≥?.05) when normalised to body mass. Significance was found in absolute concentric impulse between sexes, but not when analysed relative to body mass. Rate of force development, rate of power development, relative peak force, and work were not significantly different between sexes. Males had significantly greater impulse during the eccentric phase as well as peak power (PP) during the concentric phase of the CMJ than did females in both absolute and relative terms. It is concluded that sex differences are not a determining factor in measured force during a CMJ when normalised to body mass between strength-matched subjects. However, eccentric phase impulse and concentric phase PP appear to be influenced by sex differences independent of matching strength levels. 相似文献
50.
Background: Participation in regular physical activity is routinely recommended for adolescents with cystic fibrosis (CF), however, past research suggests that many patients are not regularly physically active. There may be a variety of reasons for this inconsistent participation. In this study, we used qualitative methods to explore attitudes toward physical activity with a focus on identifying facilitators and barriers in a small group of adolescents with CF.Methods: Ten participants with CF aged 13-17 volunteered for this study. Two, open-ended semi-structured telephone interviews were conducted. Participants were questioned about their current and past physical activity participation, their feelings about physical activity, and factors that made them want to be physically active or not. Participants were also questioned about their perceptions of physical activity for themselves and other adolescents with CF. Initial interviews were recorded, transcribed, and coded into categories. During a follow-up interview, 3 to 4 weeks later, participants were reminded of their initial responses and allowed to elaborate or clarify their initial responses. All responses were categorized and became major themes describing facilitators and barriers to exercise.Results: All participants articulated understanding the importance of participating in physical activity for health benefits. Factors that served as facilitators to participation in physical activity included improving general or lung-specific health, as well as mental health. Barriers included general discomfort, increased lung symptoms, and disinterest.Conclusions: A group of adolescents with CF perceived positive general and lung health effects of physical activity, but also perceived barriers to participating in regular physical activity. Further work is needed to determine ways to accentuate facilitators and decrease barriers to promote regular physical activity in adolescents with CF. 相似文献