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Current publishing practices in academia tend to result in datasets that are difficult to discover. This is because datasets are not well-integrated across academic domains and they are often not linked to the documents that reference them. For these reasons, discovering datasets across domains can be challenging; for example, discovering archeological observations and biological specimens using the same search is not widely supported, even if both datasets share a similar spatial extent, like Mesoamerica. It is also challenging to retrieve relevant documents that reference datasets; for example, retrieving a series of field reports that reference archeological observations is typically not supported. Our work develops an extensible method for: (1) geographically integrating collections across disciplinary repositories and (2) connecting datasets to related documents. We describe a collection of spatially-referenced researcher datasets, capturing their metadata elements and encoding them as linked open data. We then leverage existing library services to formalize links from datasets to documents. The system described in this work has been deployed, resulting in an experimental open data site for the UCSB campus. Results indicate that this system can be scaled-up with support from an institutional repository in the near future. 相似文献
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Beyond some contracted minimum, salaried workers’ hours are largely chosen at the worker's discretion and should respond to the strength of contract incentives. Accordingly, we consider the response of teacher hours to accountability and school choice laws introduced in US public schools over the past two decades. Total weekly hours of full-time teachers have risen steadily since 1983 by about an hour, and after-school instructional hours have increased 34 percent since 1987. Average hours and the rate of increase also vary widely across states. However, after accounting for a common time trend in hours, we find no association between the introduction of accountability legislation and the change in teacher hours. Education reforms are, however, associated with an increase in student test scores, presumably due to other types of changes in school and teacher behavior. 相似文献
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Paula J. Schwanenflugel Robin D. Morris Melanie R. Kuhn Gregory P. Strauss Jennifer M. Sieczko 《Reading and writing》2008,21(3):177-203
The purpose of the experiments was to determine the automatic use of large or small word reading units in young readers in
the absence of word decoding strategies. Picture-word Stroop interference was examined from four types of conflicting labels:
(a) words containing both highly predictable grapheme–phoneme correspondence (GPC) units and highly consistent rime units
(henceforth, Hi-GPC + Hi-Rime); (b) words with highly predictable GPC units and less consistent rime units (Hi-GPC + Lo-Rime);
(c) words with low predictability GPC units and highly consistent rime units (Low GPC + High Rime); (d) nonwords that contained
both highly predictable GPC and highly consistent rime units. Naming time for pictures containing these labels was compared
against that for pictures with random letter strings or no labels. In Experiment 1, Stroop interference was examined in first,
second, and third grade children to determine whether there was developmental change in the presence of rime or GPC interference.
In Experiment 2, Stroop interference was examined as a function of relative reading skill in first grade children. In Experiment
3, Stroop interference in adults was compared to the use of rime or GPC pronunciation strategies for nonword reading. In all
experiments, Stroop interference in picture naming was longer for pictures with highly predictable GPC unit labels than less
predictable GPC unit labels. However, in Experiment 3, even though adults showed interference from predictable GPC units in
the Stroop task, they always preferred rime pronunciation for ambiguous nonwords in the nonword reading task. It is argued
that the current experiments provide evidence for a flexible units model.
The results of this study were presented at the Cognitive Development Society meeting, November 2001, Virginia Beach, VA,
and the American Educational Research Association meeting, April 2004, San Diego, California. 相似文献
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Kristin Altmeyer Sebastian Kapp Michael Thees Sarah Malone Jochen Kuhn Roland Brünken 《British journal of educational technology : journal of the Council for Educational Technology》2020,51(3):611-628
Learning with hands-on experiments can be supported by providing essential information virtually during lab work. Augmented reality (AR) appears especially suitable for presenting information during experimentation, as it can be used to integrate both physical and virtual lab work. Virtual information can be displayed in close spatial proximity to the correspondent components in the experimentation environment, thereby ensuring a basic design principle for multimedia instruction: the spatial contiguity principle. The latter is assumed to reduce learners' extraneous cognitive load and foster generative processing, which supports conceptual knowledge acquisition. For the present study, a tablet-based AR application has been developed to support learning from hands-on experiments in physics education. Real-time measurement data were displayed directly above the components of electric circuits, which were constructed by the learners during lab work. In a two group pretest–posttest design, we compared university students' (N = 50) perceived cognitive load and conceptual knowledge gain for both the AR-supported and a matching non-AR learning environment. Whereas participants in both conditions gave comparable ratings for cognitive load, learning gains in conceptual knowledge were only detectable for the AR-supported lab work. 相似文献
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Janina Burschka Dr. Peter Kuhn PD Dr. Uwe Menge Prof. Dr. Patrick Oschmann 《Sportwissenschaft》2013,43(3):181-196
This article examines the content and methodology of studies on Tai Chi as a sport in health care. We investigate the concept behind the rather simple name “Tai Chi,” concluding that this concept is manifold and highly variable. How did researchers deal with this variability when studying the effects of Tai Chi as a health-care intervention? We then explore how scientific research on Tai Chi has been conducted to date and draw the interim conclusion that the variability was barely taken into consideration. Our analysis of seven Tai Chi interventions reveals that two interventions referred to as Tai Chi may differ considerably in their content. The variability poses difficulty in repeating the intervention and drawing causal inferences. This problem is discussed in the current literature under the term “complexity in health-care interventions.” On the basis of a summary of this debate, we discuss the challenge of researching Tai Chi from a complex perspective—with the aim of achieving solid results that can be repeated. 相似文献