The ability to monitor understanding of texts, usually referred to as metacomprehension accuracy, is typically quite poor in adult learners; however, recently interventions have been developed to improve accuracy. In two experiments, we evaluated whether generating delayed keywords prior to judging comprehension improved metacomprehension accuracy for children. For sixth and seventh graders, me...

Recently, Tsuji and Shimizu proposed a one-time password authentication protocol against replay and theft attacks to protect the stolen-verifier problem or other steal attacks on the Internet server. Unfortunately, in this paper, we show that their scheme is also insecure under the middle attack. Their scheme is also not secure under the middle attack. keywords: password authentication, one-tim...

By interpreting ‘p is impossible’ by ‘p is selfcontradictory’, and ‘p is always’ by ‘not p is self-contradictory’, this paper studies which of the three-valued systems of Łucasiewicz, Gödel, Kleene, Bochvar, and Post, do verify the Aristotle’s principles of Non-Contradiction (NC), and Excluded-Middle (EM). Keywords— Systems of three-valued logic, Non-Contradiction, Excluded-Middle.