45,484 research outputs found

    On finite complete rewriting systems and large subsemigroups

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    Let SS be a semigroup and TT be a subsemigroup of finite index in SS (that is, the set STS\setminus T is finite). The subsemigroup TT is also called a large subsemigroup of SS. It is well known that if TT has a finite complete rewriting system then so does SS. In this paper, we will prove the converse, that is, if SS has a finite complete rewriting system then so does TT. Our proof is purely combinatorial and also constructive.Comment: We have made major changes to the paper and simplified most of the proof

    Establishing a Hybrid Wound and Ostomy Continuing Education Program

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    Wound and ostomy nurses receive specialty training and certification to provide care in abdominal stomas, ostomies, wounds, fistulas, and pressure injuries. The eight existing nationwide programs in 2011 were inadequate to meet increasing patient population demands. We developed an innovative nondegree, postbaccalaureate continuing wound and ostomy education program using a hybrid design. The program integrated interactive online classes with intensive onsite classes and skills training. The program has been granted seven-year accreditation; student evaluations have been positive

    Twisted Alexander invariants of complex hypersurface complements

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    Antipersistant Effects in the Dynamics of a Competing Population

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    We consider a population of agents competing for finite resources using strategies based on two channels of signals. The model is applicable to financial markets, ecosystems and computer networks. We find that the dynamics of the system is determined by the correlation between the two channels. In particular, occasional mismatches of the signals induce a series of transitions among numerous attractors. Surprisingly, in contrast to the effects of noises on dynamical systems normally resulting in a large number of attractors, the number of attractors due to the mismatched signals remains finite. Both simulations and analyses show that this can be explained by the antipersistent nature of the dynamics. Antipersistence refers to the response of the system to a given signal being opposite to that of the signal's previous occurrence, and is a consequence of the competition of the agents to make minority decisions. Thus, it is essential for stabilizing the dynamical systems.Comment: 4 pages, 6 figure

    Issues for consideration to adopt educational computer games for learning and teaching

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    Computer games have started to gain attention in the domain of learning and teaching. The integration of computer games for education in the classroom has starting to gain acceptance in some countries. However, for schools which have never used computer games in the classroom, study still need to be conducted to investigate the teachers' belief and attitude toward the usage. The purpose of this paper is to examine issues for consideration when adopting educational computer games for learning and teaching. This paper also examines the concepts that related to educational computer games and aspects of learning and teaching. In addition, the theories of technology acceptance which use to assess the perception, belief and attitude of teachers and students have also been investigated