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101.
Xuejun?Ryan?Ji Andrea?Beerwinkle Kausalai ?Wijekumar Puiwa?Lei R.?Malatesha Joshi Shuai?Zhang 《Reading and writing》2018,31(9):2095-2113
Latent transition analysis (LTA) was conducted on data from a recent cluster randomized controlled study of 1808 seventh-grade students’ use of a web-based intelligent tutoring system (ITSS). This analysis goes beyond traditional variable-centered methods to focus on profiles of learners and changes in reading class membership between pre- and post-tests for students with and without receiving ITSS intervention. A four-class model was obtained, consisting of poor readers (class 1), delayed readers (class 2), proficient readers (class 3), and readers with specific deficits in problem and solution (class 4). Analysis showed that students receiving the ITSS intervention were more likely than students without the intervention to transition into the proficient class regardless of their initial reading performance profiles. However, the odds ratio of transitioning into the proficient class (as opposed to staying in the same class) in the ITSS condition, compared to the control, was the highest (4.29) for initial readers with deficits in problem and solution, followed by initial poor readers (1.66) and initial delayed readers (1.50). Findings indicated that students in the ITSS condition had larger reading improvement than students in the control condition, particularly for readers with initial deficits in problem and solution. 相似文献
102.
We present a dramatic demonstration which is also a simple, and an extremely low-cost experiment of head-on collision of two balls in a vertical direction. The advantages of this phenomenon in the vertical direction are clarified. Some simple estimates are made. A thorough analysis of this simple topic is then made, which includes various special and limiting cases, conditions of collision, change of reference frame, etc. 相似文献
103.
Andrew Klobucar Norbert Elliot Perry Deess Oleksandr Rudniy Kamal Joshi 《Assessing Writing》2013,18(1):62-84
This study investigated the use of automated essay scoring (AES) to identify at-risk students enrolled in a first-year university writing course. An application of AES, the Criterion® Online Writing Evaluation Service was evaluated through a methodology focusing on construct modelling, response processes, disaggregation, extrapolation, generalization, and consequence. Based on the results of our two-year study with students (N = 1,482) at a public technological research university in the United States, we found that Criterion offered a defined writing construct congruent with established models, achieved acceptance among students and instructors, showed no statistically significant differences between ethnicity groups of sufficient sample size, correlated at acceptable levels with other writing measures, performed in a stable fashion, and enabled instructors to identify at-risk students to increase their course success. 相似文献
104.
Knowledge Management: A Threefold Framework 总被引:3,自引:0,他引:3
105.
Saroj Kant Sinha Satya Vati Rana Deepak Kumar Bhasin Kusum Joshi 《Indian journal of clinical biochemistry : IJCB》2005,20(1):169-172
Duodenal ulcer is a common disease and is considered acid-peptic disease. Duodenal ulcer patients are known to have higher
incidence of antral gastritis and duodentitis than general population. Thus one can expect some alteration in the enzyme products
of mucosal cells of antrum and duodenum in this condition. The present study was planned in 30 patients of duodenal ulcer
and 30 of non-ulcer dyspepsia. After overnight fast, upper gastrointestinal endoscopy was done using forward viewing fibreoptic
endoscope. Two pairs of biopsies were taken from the antrum and two from the descending duodenum using standard biopsy forceps.
One pair of biopsy from each site was taken in 10% formal saline for histopathological examination. One pair of biopsies from
each site was collected in saline for the measurement of disaccharidases by Dahlquist method. Activities of lactase, sucrase
and maltase were significantly higher in descending duodenum mucosa as compared to antral mucosa in both groups. Activities
of these enzymes in antrum and duodenum of both groups did not differ significantly. No significant difference was found in
disaccharidases in antrum and descending duodenum in patients with or without histological gastritis. This study suggests
that the disaccharidases do not change in antrum and duodenum of ulcer patients as compared to the patients with non-ulcer
dyspepsia. 相似文献
106.
Amitabh Joshi 《Resonance》2008,13(9):812-835
The year 2008 marks the 150th anniversary of the debut of the concept of natural selection as a mechanism of adaptive evolution
through the reading of papers by Darwin and Wallace to the Linnaean Society. It also marks the 100th anniversary of the enunciation
of the principle defining the inertial state of populations from a genetic viewpoint through the independent publication of
papers on the topic by G H Hardy and W Weinberg. In this four-part series, we will examine the significance of the Hardy-Weinberg
Equilibrium as a basic model of population genetics that, in turn, forms the foundation for evolutionary genetics. In Part
I of this series, we first discuss the historical backdrop to the work of Hardy and Weinberg, and introduce the basic notion
of genetic equilibrium. 相似文献
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