Objectives: The aim of this study was to determine the incidence of alcohol and other substance use in patients presenting to an emergency department with acute psychiatric illnesses and to clarify the role of urine drug ...

nicellular algae are the predominant microbial mat-forming phototrophs in the extreme environments of acidic geothermal springs. The ecology of these algae is not well known because concepts of species composition are ...

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We outline several algorithms for computing with semigroup representations, and combine them in order to verify when certain algebras are principal ideal rings.

For linear bilevel programming problems, the branch and bound algorithm is the most successful algorithm to deal with the complementary constraints arising from Kuhn-Tucker conditions. This paper proposes a new branch and ...

n robot applications requiring interaction with a partially/unknown environment, mapping is of paramount importance. This paper presents an effective surface growing algorithm for map building based on laser scan generated ...

A long standing unanswered question in number theory concerns the existence (or not) of odd perfect numbers. Over time many properties of an odd perfect number have been established and refined. The initial goal of this ...

In late 2008, the Australian Government announced funding for a national collaborative project to develop a curriculum framework for courses of study in Chinese (Mandarin Mandarin (ma(n`d?ri(n) [Port. mandar=to govern, or ...

Organizations that undertake many projects need to identify the types undertaken, and use labels to name them.These labels are attributes that form the basis of a project categorization system. There are two reasons ...