Takayuki Sekiya

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The plasma of several different gases has shown a sporicidal activity. From these gases, nitrogen gas was most difficult to produce atomic nitrogen radicals. However, these radicals have a high energy, indicating that nitrogen gas plasma could be used to sterilize microorganisms and inactivate endotoxins. The sterilization mechanism of nitrogen gas plasma(More)
We propose a new integrated computational environment to support design object modeling, during engineering design process that requires a variety of design object models, such as a geometric model, a control model, and a finite element model. To integrate multiple design object models, we have developed a mechanism called a metamodel mechanism that(More)
— A good curriculum is crucial for a successful university education. When developing a curriculum, topics , such as natural science, informatics, etc. are set first, and then course syllabi are written accordingly. However, there is no guarantee that the topics actually covered by the course syllabi are identical to the initially set topics. To find out if(More)
A good curriculum is crucial for a successful university education. When developing a curriculum, topics, such as natural science, informatics, and so on are set first, course syllabi are written accordingly. However, the topics actually by the courses are not guaranteed to be identical to the initially set topics. To find out if the actual topics are(More)
The curricula higher educational institutions offer is a key asset in enabling them to systematically educate their students. We have been developing a curriculum analysis method that can help to find out differences among curricula. On the basis of "Computing Science Curricula CS2013", a report released by the ACM and IEEE Computer Society, we applied our(More)
Novice programmers' understanding of conditional and loop constructs are often incomplete. They seem to understand a single conditional or single loop, but fail to understand the combination of them. We propose a method for finding misconceptions underlying this failure. We first developed a tracing quiz set to locate the exact points at which students will(More)
A good curriculum is crucial for a successful university education. When developing a curriculum, topics, such as economics, natural science, informatics, etc. are set first, and course syllabi are written accordingly. However, the topics actually covered by the course syllabi are not guaranteed to be identical to the initially set topics. To find out if(More)
The important goal in data mining is to reveal hidden knowledge from data and various algorithms have been proposed so far. But the problem is that typically not all rules are interesting - only small fractions of the generated rules would be of interest to any given user. Hence, numerous measures such as confidence, support, lift, information gain, and so(More)
We investigated the relationship between programming skills and that of programming concepts in the introductory programming course in this paper. We introduced Modification and Programming skills from other existing skills. From the results of the midterm and final exams of our course, we got the scores in the skills, and from them we estimated the ability(More)
This paper discusses the UNL Enconversion of Tamil sentences. The rich morphology of Tamil enables the Enconversion process to be based on morpho-semantic features of the words and their preceding and succeeding context. The use of case relation indicating morphological suffixes, POS tag and word level semantics allows the rule based Enconversion to be