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This paper discusses on a method of measuring similarities between program source codes. Unlike many of existing similarity measuring method we do not compare a pair of source codes directly but compare them indirectly with using reference source codes. Using reference vectors calculated from each source codes and reference source codes reduced considerable(More)
The antioxidative properties of ascorbigen, one of the major indole-derived compounds of Brassica vegetables, were systematically evaluated using multiple assay systems with comparison to the well-known antioxidants ascorbic acid and Trolox. We first performed assays using model radicals, DPPH radical, galvinoxyl radical, and ABTS radical cation (ABTS(•+)).(More)
Arbutin, a glucoside of hydroquinone, has shown strong 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical cation-scavenging activity, especially in reaction stoichiometry. This study investigated the reaction mechanism of arbutin against ABTS radical cation that caused high stoichiometry of arbutin in an ABTS radical cation-scavenging(More)
This study aims to make university lectures more enjoyable and fruitful by providing a virtual discussion space closed to outside participants. This web-based educational system has the appearance of an online game, similar to a quiz show. Fearing humiliation, some students hesitate to state their opinions or ask questions in front of unfamiliar classmates.(More)
Source code plagiarism is becoming one of the most serious problems in academia. There have been many proposed methods that attempt to detect source code plagiarism in programming classes. Most of them extract algorithmic features from the source code and measure the similarity between them. These methods show high levels of accuracy in evaluation(More)
In this paper, we extend our previous work on the new similarity measure for a source@code plagiarism detection in academia. The method extracts superficial features from source codes and represents as an author's coding style by the HMM-based stochastic models called Coding ModelsD The outputs of the coding models give us information to judge if a source(More)
Readable source code should contain a relatively small amount of latent bugs and should be easy to maintain. However, it is difficult for a teacher to teach all students to write code in accordance with a certain coding style because each of them naturally has his/her own different coding styles, and the teacher needs to advise them considering their(More)
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