In this paper, we propose a novel approach to behavior-based control, which combines fuzzy logic with multiple objective decision theory. Fuzzy logic provides powerful tools for formulating sophisticated behavior-based systems for robot control. However, it suuers from problems associated with resolving be-havioral connicts, which are mainly due to the de-ciencies of fuzzy inferencing technique...

the present paper aims to examine the role of frequency lexicon in assessing lexical proficiency of persian learners. addressing the frequency distribution pattern of persian words, the research which is conducted in corpus-based method studies the relationship between words and lexical proficiency as well as derives the frequency lexicon from persian corpus. to do so, formal and colloquial per...

This paper considers the composition of tuples from two relations in order to derive additional tuples of one of these relations. Our purpose is to determine when the composition is plausible and for which relation the new tuples are derived. We first present a formal definition of composition and our extension to it. We next define conditions on the domains and ranges of the relations that are...

Helium is a compiler for a large subset of Haskell under development at Universiteit Utrecht. A major design criterion is the ability to give superb error messages. This is especially needful for novice functional programmers. In this paper we document the implementation of the Helium type inferencer. For purposes of experimentation with various methods of type inferencing, the type inferencer ...

The present study aims at investigating the effect of different levels of lexical collocational density on EFL learners’ reading comprehension. Eighty sophomore students with different levels of proficiency studying at  Zand Institute of Higher Education in Shiraz, Iran were chosen from among eighty five learners based on their score distribution on a reduced TOEFL test constructed by Education...

: This study aims to explore the relationship between syntactic and lexical complexity and also the relationship between different aspects of lexical complexity. To this end, speech monologs of 35 Iranian high-intermediate learners of English on three different tasks (i.e. argumentation, description, and narration) were analyzed for correlations between one measure of sy...