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A collection of academic publications by faculty and staff, both before and during their time at UPEI.

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8251 - 8275 of 8385
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We introduce a new variant of the heavily studied model of H systems. The new variant will use an external factor to determine the set of the active splicing rules. We improve the best known universality result for time-varying H systems with respect to the diameter of such a system and we prove tha...
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We present a fast incremental algorithm for constructing minimal Deterministic Finite Cover Automata (DFCA) for a given language. Since it was shown that the minimal DFCA for a language L has less states than the minimal Deterministic Finite Automata (DFA) for the same language L, this technique see...
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Regex are used in many programs such as Perl, Awk, Python, egrep, vi, emacs etc. It is known that regex are different from regular expressions. In this paper, we give regex a formal treatment. We make a distinction between regex and extended regex; while regex present regular languages, extended reg...
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In this paper we consider the transformation from (minimal) non-deterministic finite automata (NFAs) to deterministic finite cover automata (DFCAs). We want to compare the two equivalent accepting devices with respect to their number of states; this becomes in fact a comparison between the expressio...
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Petri net modeling enables us to verify the protocol of interest formally. However, aside from formal verification, a new protocol really needs to be tested in a relatively realistic environment in which it interworks (or at least co-exists) with earlier or different versions of the same or similar ...
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We study the shuffle quotient operation and introduce equivalence relations it defines with respect to a (regular) language. Corresponding to an arbitrary shuffle decomposition we construct a normalized decomposition that is defined in terms of maximal languages. Using closure properties of the norm...
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We present a fast incremental algorithm for constructing minimal DFCA for a given language. Since it was shown that the DFCA for a language L can have less states than the DFA for L, this technique seen-is to be the best choice for incrementally building the automaton for a large language, especiall...
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A string x is random according to Kolmogorov [10] if, given its length, there is no stringy, sensibly shorter than x, by means of which a universal partial recursive function could produce x. This remarkable definition has been validated in several ways (see [12, 14, 2, 11]) including a topological ...
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A cover-automaton A of a finite language L⊆Σ∗ is a finite deterministic automaton (DFA) that accepts all words in L and possibly other words that are longer than any word in L. A minimal deterministic finite cover automaton (DFCA) of a finite language L usually has a smaller size than a minimal...
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This book is a pioneering investigation of the tourism practices in the world's other, cold water, islands. Located in extreme latitudes and subject to extreme weather conditions, these islands have been developing their tourism appeal in manners that appear sustainable. They present themselves in i...
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Four trials were performed to evaluate the effects of water temperature on critical aspects of L. salmonae development in rainbow trout (Oncorhynchus mykiss). The permissive water temperature range in which xenomas developed was between 9 degrees C and 20 degrees C. Parasite development was arrested...
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The early ultrastructural stages of Loma salmonae were studied in the gills of experimentally infected rainbow trout. No parasitic stages were identified during the first 2 wk of the infection. By week 3 postexposure (PE), uninucleate and binucleate meronts were recognized within host cells (no xeno...
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Rev. of A Happy Holiday: English Canadians and Transatlantic Tourism, 1870-1930 by Cecilia Morgan.
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