In this paper we investigate the periodic structure of rich words (i.e., words having the highest possible number of palindromic factors), giving new results relating them with periodic-like words. In particular, some new characterizations of rich words and rich palindromes are given. We also prove that a periodic-like word is rich if and only if the square of its fractional root is also rich.

This chapter summarizes the experience collected after years of researching and experiencing on teaching and learning online in the form of an eLearning pattern-architecture. In this architecture, based upon the leading role of the human factor (according to the vision of the eLearning by GRIAL Group), the whole processes occurring within any training activity is represented, from the instituti...

This paper will present observations on the design, artistic, and human factors of creating digital music controllers. Specific projects will be presented, and a set of design principles will be supported from those examples.

Previous studies have examined human-to-human dialogue in expert tutoring on the speech act level, but these analyses fail to provide the context necessary for understanding how a series of speech acts relate to each other. This research examined tutorial dialogue in terms of sustained, pedagogically distinct phases, referred to as tutoring “modes”, which gives context to the finer-grained anal...

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American students work less than Asian students in high school, but work more in college. We propose an explanation for this puzzle, using a two-stage-signaling model. Signaling can occur over time both in high school and college. We show that main signaling stage may be high school or college, and that students work harder in the main signaling stage. We also find that the main signaling is mo...