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This paper proposes a method of determining the optimal number of clusters dividing the multiple transformations for the purpose of the efficient processing of query against the results of applying the transformations to time series. In this paper, the moving average is used as a transformation for simplicity. The model of query time to the number of clusters is constructed for determining the optimal...
This paper shows a systematic method to decide software release time using AHP (analytic hierarchy process). The method helps a project team to make a correct decision about the software release time by combining multiple evaluations obtained from different viewpoints. In general, it is difficult to obtain quantitative evaluations of all the aspects to be considered in a software development project,...
Model-based testing has been widely studied to generate test cases from the Finite State Machine (FSM). Due to the limitation of the modeling theory of FSM, it is hard to build a right model for software concurrent behaviors by FSM. Recently, we proposed a theory of test modeling based on regular expressions to construct test models for concurrent systems. To realize and put this theory into practice,...
Recently, rapid development in information and communications technology has led to explosive growth in the amount of available information, including substantial volume of data on the Web. One step toward managing and making use of this explosion of information is to enhance search technologies so that they can easily retrieve the necessary data. In this study, we propose a method for providing multifaceted...
This paper tackles enhancing outside-class learning experiences focusing on JSL (Japanese as a Second Language) learners. Features and approaches of online tools for language learning are overviewed since knowing the pros and cons of each tool is essential for successful language learning and as a cutting-edge online project for language learning, a mobile and ubiquitous learning application called...
In the era of computer and communication technologies, fostering students' high-level thinking abilities has become an important educational objective web-based problem-solving has been recognized as being a helpful approach for promoting the thinking process of students. In this study, a contextual learning approach is employed in web-based problem-solving activities for improving students' learning...
The purpose of this study is the design and development of the supporting environment that attempts to improve skipping-rope form of unlearned performers. We focus on monitoring four body parts based on image processing technology. We also propose values of threshold in image processing for each part but they are subject to change as the study progresses. This study also integrates feedback information...
With the advancement of mobile and wireless communication technologies, the ubiquitous learning system have provided students more assistance without being limited by time and space when they were participating in problem-based collaborative learning. The purpose of this study is to investigate the progress of students' collaboration competence in field inquiry activities. A total of 43 sixth and...
This paper describes a method to detect evaluation points from freely written Web review for overviewing review structure. In freely written review, evaluation points and relationships between these points are unclear. We consider that overviewing Web review structure helps us to understand review documents. Based on our experiments, we confirmed that the proposed method detected evaluation points...
Method commonly used to examine the degree of stress is a LF / HF, which is calculated by spectral analysis the RRI time series data. However, many data is required in the spectral analysis, it is impossible to calculate accurately the changes in a short time. In this study, it is able to be used Wavelet analysis to examine the time-dependence of the degree of stress. We made a comparison to the resting...
In the neural network field, many application models have been proposed. A neuro chip and an artificial retina chip are developed to comprise the neural network model and simulate the biomedical vision system. Previous analog neural network models were composed of the operational amplifier and fixed resistance. It is difficult to change the connection coefficient. In this study, we used analog electronic...
On user generated contents sites, user's comments include the user's impression to the content. The authors believe that user's comments can be used as the data mining resource to evaluate the contents. In this paper, the authors focus on bilibili.tv, a Chinese video sharing site, and analyze user's emotional comments on the site. Toward development of content quality measurement based on emotional...
Concept maps can help students learn more meaningfully. According to test scores only, students were divided into three groups of high-score, middle-score and low-score, in the previous works, researchers then applied data mining association rule technique to analysis different student groups' assessment data to construct corresponding concept maps. However, for considering more accurate to evaluate...
We implemented a collaborative web presentation system for realizing a reactive presentation. The system consists of a personal computer (PC) for a presenter and PCs (or tablet devices) for audience members. The presenter uses the existing presentation software PowerPoint. The audience members use existing Web browsers. The system is used for working collaboratively with audience members. A presenter...
We propose a Generational Layered (GL) canvas mechanism to reduce delays of synchronization for collaborative Web applications. The delays consist of network delays and drawing delays. The network delays are well-argued topic by various researches. We focus on the drawing delays, which are a primary bottleneck of synchronization of objects on canvas. In our previous work, we have proposed a Drawing-Frequency...
Rough set-based rule generation in tables with uncertainties, especially non-deterministic information and missing values, is investigated. The possible world semantics is employed, and both certain rules and possible rules are defined. Even though these definitions cause the computational problem, it is solved by using rough set-based concepts, and NIS-Apriori algorithm is proposed as the core algorithm...
In scientometrics and citation analysis, several measures for evaluating the industrial relevance or the impact of academic research fields have been proposed. What seems to be lacking, however, is that these measures could not evaluate the recent industrial relevance or impact of each field, because most of them rely on citations of research papers in patents and vice versa. In this paper, we attempt...
An interactive presentation is intended to support lecturers that need to enhance presentation expressions and gather real-time feedback from audiences while delivering their presentations. Our objective is to improve the efficiency of bi-directional communication between a lecturer and a large audience in presentations using a real-time questionnaire that the result is displayed on a shared screen...
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