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We investigate the problem of computing Completely Independent Spanning Trees (CIST) under a practical approach. We aim to show that despite CISTs are very challenging to exhibit in some networks, they present a real interest in ad-hoc networks and can be computed to enhance the network robustness. We propose an original ILP formulation for CISTs and we show through simulation results on representative...
A real-time learning analytics system is proposed for in-classroom use. We used an e-learning system and an e-book system to collect real-time learning activities during lectures. The collected logs were analyzed and presented visually on a web-based system for the teacher. The teacher can monitor how many students are viewing the same page as the teacher, whether they are following the explanation,...
This preliminary research investigates the effects of self-regulated learning support using the system "Self-regulator (SR)," and relationships between self-regulated learning awareness, learning behaviors, and perceived effects of SR. The results showed that the course with SR promoted "meet the deadline" awareness. The results of Spearman's correlation analysis revealed that...
Data exchange is the process of generating an instance of a target schema from an instance of a source schema such that source data is reflected in the target. The prevailing approach for data exchange is based on schema mappings, which are high level expressions that describe relationships between database schemas [1]. However, schema-mapping based data exchange techniques suffer from two problems:...
This paper discusses learning behavior analysis using a learning management system (LMS) and an e-textbook system. We collected a large number of operation logs from e-textbooks to analyze the process of learning. In addition, we conducted a quiz to check the level of understanding. In our study, we especially focus on an analysis of the relationship between learning behavior in informal learning...
As a generalization of T-type BCI-algebra, the notion of T-type pseudo-BCI algebra is introduced, and some properties and equivalent conditions are proved. By introducing the notion of T-type pseudo-BCI filter, a characterization of T-type pseudo-BCI algebra is constructed. Moreover, the relationship between T-type pseudo-BCI filters and pseudo-q filters is investigated.
Aiming at the color distributing feature of image, a feature extraction and image retrieval algorithm using Discrete Wavelet Transform (DWT) and Singular Value Decomposition (SVD) is proposed, which is based on child-block partition and area division. Firstly, divide the image into child-blocks, DWT the color value of each block, and extract the low frequency coefficients as the color feature of this...
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