The rapid growth of information and communication technology (ICT) gives a lot of alternatives in supporting human work. ICT plays an important role in teaching and learning process. A learning system that uses ICT is called E-Learning. Statistics is still considered as a spooky subject by most of students, especially the first year students. On the other hand, it is a mandatory subject. To solve this problem, a web based statistical learning system, namely RWikiStat 2.0, has been created. It is an open source system for statistical learning supported by the technology of Wiki, and R statistical software as its statistical engine. This system is the improvement of the previous one.

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Novel enzymatic methods were used for the measurement of the levels of total gallotannin, total amino acids, and glutamrite in green tea infusions and in canned green tea drinks. Gallotannin was measured photometrically using rhodanine and tannase. Amino acids and glutamate were measured by a fluorometric flow-analytical method using L-amino acid oxidase and L-glutamate oxidase. The analytical results showed that the canned green tea drinks examined were similar in terms of chemical composition to infusions of the Japanese green tea called sencha.

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Catecholamine (adrenalin and noradrenalin) in Urine was estimated in 14 positive reactors to Regitine, 14 false positive reactors and 34 negative reactors by the modified Euler-Floding method of Yoshinaga. In all cases their maximal blood pressure was over 170 mmHg and their minimal pressure was over 90 mmHg. Those who shwoed a decrease of maximal pressure over 35 mmHg as well as of minimal pressure over 25 mmHg by the Regitine administration were regarded as positive reactors, those showing a decrease of maximal pressure over 35 mmHg and of minimal pressure under 25 mmHg were regarded as false positive , and those showing a decrease of maximal pressure under 35 mmHg and of minimal pressure under 25 mmHg were regarded as negative reactors.
More adrenalin and noradrenalin in urine were found in the positive reactors than in healthy persons and the negative reactors. But there was found no difference in the amounts of both adrenalin and noradrenaline in urine among the false positive reactors, the negative reactors and healthy persons.
The correlation of both adrenalin and noradrenalin to both maximal and minimal blood pressure was not found in the positive and the false positive reactors, though a correlation of noradrenalin to maximal blood pressure was found in the negative reactors.
It was concluded that the Regitine test has a close relation to noradrenalin, but not to adrenalin.
The positive reactors were found in 11.7% of the 298 examined whose maximal blood pressure was over 170 mmHg.

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We propose a design and implementation for an Application Programming Interface (API) monitoring system called API Chaser, which is resistant to evasion-type anti-analysis techniques, e.g., stolen code and code injection. The core technique in API Chaser is code tainting, which enables us to identify precisely the execution of monitored instructions by propagating three types of taint tags added to the codes of API, malware, and benign executables, respectively. Additionally, we introduce taint-based control transfer interception, which is a technique to capture precisely API calls invoked from evasive malware. We evaluate API Chaser based on several real-world and synthetic malware to demonstrate the accuracy of our API hooking technique. We also perform a large-scale malware experiment by analyzing 8, 897 malware samples to show the practical capability of API Chaser. These experimental results show that 701 out of 8, 897 malware samples employ hook evasion techniques to hide specific API calls, while 344 malware ones use target evasion techniques to hide the source of API calls.

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