84,855 research outputs found

    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

    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

    A joint-channel diagonalization for multiuser MIMO antenna systems

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    In this paper, we address the problem of improving the performance of multiuser space-division multiplexing (SDM) systems where multiple independent signal streams can be transmitted in the same frequency and time slot. The problem is important in multiuser multiple-input multiple-output systems where communication from one base station to many mobile stations can occur simultaneously. Our objective is to devise a multiuser linear space-time precoder for simultaneous channel diagonalization of the multiuser channels enabling SDM. Our new approach is based on diagonalizing the multiuser channel matrices and we use a variation of successive Jacobi rotations. In addition to the diagonalization, our approach attempts to optimize the resultant channel gains for performance enhancement. Our method is valid for both frequency-flat and frequency-selective fading channels but we assume that the base station knows all the channels and that they are quasi-stationary

    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

    Twisted Alexander invariants of complex hypersurface complements

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    Treatment of control data in lunar phototriangulation

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    In lunar phototriangulation, there is a complete lack of accurate ground control points. The accuracy analysis of the results of lunar phototriangulation must, therefore, be completely dependent on statistical procedure. It was the objective of this investigation to examine the validity of the commonly used statistical procedures, and to develop both mathematical techniques and computer softwares for evaluating (1) the accuracy of lunar phototriangulation; (2) the contribution of the different types of photo support data on the accuracy of lunar phototriangulation; (3) accuracy of absolute orientation as a function of the accuracy and distribution of both the ground and model points; and (4) the relative slope accuracy between any triangulated pass points

    Comments on the Monopole-Antimonopole Pair Solutions

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    Recently, the monopole-antimonopole pair and monopole-antimonopole chain solutions are solved with internal space coordinate system of θ\theta-winding number mm greater than one. However, we notice that it is also possible to solve these solutions numerically in terms of θ\theta-winding number m=1m=1 instead. When m=1m=1, the exact asymptotic solutions at small and large distances are parameterized by a single integer parameter ss. Here we once again study the monopole-antimonopole pair solution of the SU(2) Yang-Mills-Higgs theory which belongs to the topological trivial sector numerically in its new form. This solution with θ\theta-winding and ϕ\phi-winding number one is parameterized by s=0s=0 at small rr and s=1s=1 at large rr.Comment: Two figures, 13 pages, to be sent for publicatio

    One Arizona: Evaluation Executive Brief

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    At a time when an extraordinary rhetoric of hate and intolerance defines our political climate, a narrative of fear towards newcomers threatens to divide us, and the Supreme Court is deadlocked on moving forward President Obama's Executive Actions on immigration, we are deeply moved and lifted up by the story of One Arizona. This is a story of a standout coalition of community partners that is transforming Arizona into a model for Latino civic engagement and political empowerment. Against the heated debate of building more walls along the southern border, One Arizona is a bright light and a reason for hope
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