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One of the main approaches for creating metadata for learn- ing resources in adaptive e-learning systems has been through the use of semantic web ontologies. This approach is limiting because it doesn’t usu- ally address a requirement for the support of annotators or the require- ment for signific...
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In this paper we prove a lower bound for the maximum state complexity of Deterministic Finite Cover Automata (DFCAs) obtained from Non-deterministic Finite Automata (NFAs) of a given state complexity n, in case of a binary alphabet. We show, for binary alphabets, that the difference between maximum ...
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The creation of learning resource metadata by instructors is a time consuming and error prone process. This paper outlines a broad research agenda to mitigate these issues.. The first part of this approach is to collect prescriptive metadata from various actors involved using ...
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The nuclear reaction O-18 (d, 2n) F-18 and the separation of F-18 from the irradiated samples have been studied. For this reaction liquid H2O samples were irradiated with deuterons beam in the stainless steel cells cooled with water. The formed positron emiting F-18 was separated from (H2O)-O-18 by ...
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Most searchers do not know how to use Web search engines as effectively as possible. This is due, in part, to search engines not providing feedback about how search behavior can be improved. Because feedback is an essential part of learning, we created the Search Dashboard, which provides an int...