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101.
This paper presents a pilot study that examined the information seeking behaviors of Chinese graduate students at the University of Windsor. Findings on current Chinese students' perceptions, expectations, and use of library services are highlighted including implications for academic libraries to meet international students' information needs. 相似文献
102.
In this paper, we define and present a comprehensive classification of user intent for Web searching. The classification consists of three hierarchical levels of informational, navigational, and transactional intent. After deriving attributes of each, we then developed a software application that automatically classified queries using a Web search engine log of over a million and a half queries submitted by several hundred thousand users. Our findings show that more than 80% of Web queries are informational in nature, with about 10% each being navigational and transactional. In order to validate the accuracy of our algorithm, we manually coded 400 queries and compared the results from this manual classification to the results determined by the automated method. This comparison showed that the automatic classification has an accuracy of 74%. Of the remaining 25% of the queries, the user intent is vague or multi-faceted, pointing to the need for probabilistic classification. We discuss how search engines can use knowledge of user intent to provide more targeted and relevant results in Web searching. 相似文献
103.
Emma Blakey Danielle Matthews Lucy Cragg Jessica Buck David Cameron Ben Higgins Lisa Pepper Ellen Ridley Emma Sullivan Daniel J. Carroll 《Child development》2020,91(5):1594-1614
The socioeconomic attainment gap in mathematics starts early and increases over time. This study aimed to examine why this gap exists. Four-year-olds from diverse backgrounds were randomly allocated to a brief intervention designed to improve executive functions (N = 87) or to an active control group (N = 88). The study was preregistered and followed CONSORT guidelines. Executive functions and mathematical skills were measured at baseline, 1 week, 3 months, 6 months, and 1 year posttraining. Executive functions mediated the relation between socioeconomic status and mathematical skills. Children improved over training, but this did not transfer to untrained executive functions or mathematics. Executive functions may explain socioeconomic attainment gaps, but cognitive training directly targeting executive functions is not an effective way to narrow this gap. 相似文献
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We tested whether the development of inhibitory strength, as measured by a summation test, is proportional to the strength
of the positive cue (P) against which the inhibitory cue (I) is trained. P predicted the outcome, whereas the co-occurrence
of P with I (PI) predicted no outcome. In Experiments 1, 2, and 3, we compared the latter design against a version in which
P was overshadowed by another cue (X). In this design, the compound PoX predicted the outcome, but PoIo predicted no outcome. In all three experiments, overshadowed cue Io was less inhibitory than I. In Experiment 4, a P produced by fewer training trials also supported weaker inhibitory learning.
Overall, the results were consistent with associative learning theories, especially Pearce’s (1994) configural model. Contingency
models need to make additional assumptions to accommodate this property of inhibitory learning. 相似文献
109.
Christopher DeLuca Danielle LaPointe-McEwan Ulemu Luhanga 《Educational Assessment》2016,21(4):248-266
Teacher assessment literacy has become a central priority across many educational systems in North America and elsewhere in response to growing accountability demands. Although many scholars have aimed to measure teacher assessment literacy, recent research has identified that current assessment literacy instruments do not fully reflect current transformations in the assessment landscape and remain predicated on dated standards for teacher classroom assessment practice. Given significant shifts in classroom assessment over the past 20 years, the purpose of this article is to construct a reliable instrument reflective of contemporary assessment practices and contexts. Specifically, this article describes our instrument development process including construct validation and reliability testing with more than 400 teachers. The result of this research is the Approaches to Classroom Assessment Inventory, which can be used by researchers and practitioners to support teacher assessment literacy in relation to the current accountability framework evident across educational systems. 相似文献
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