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BACKGROUND Blood urea nitrogen (BUN)/creatinine (Cr) ratio was recently reported to be an independent predictor of stroke-in-evolution (SIE) among patients who had suffered acute ischemic stroke. We aim to determine if providing hydration therapy to patients with a BUN/Cr ≥15 reduces the occurrence of SIE after acute ischemic stroke. METHODS This(More)
This paper investigates the impact of combining self explaining (SE) with computer architecture diagrams to help novice students learn assembly language programming. Preand post-test scores for the experimental and control groups were compared and subjected to covariance (ANCOVA) statistical analysis. Results indicate that the SE-plus-diagram approach had a(More)
Traditional Video on demand (VOD) teaching often only considers that studies the integrality of the unit, unable to meet the learner's study state into account to. This research proposes a set of new improvement methods: According to cognitive-developmental theory, human's short-term memory (STM) model which was limited about 20 seconds. To be regarded as(More)