4,683 research outputs found
Annotated Bibliography: Understanding Ambulatory Care Practices in the Context of Patient Safety and Quality Improvement.
The ambulatory care setting is an increasingly important component of the patient safety conversation. Inpatient safety is the primary focus of the vast majority of safety research and interventions, but the ambulatory setting is actually where most medical care is administered. Recent attention has shifted toward examining ambulatory care in order to implement better health care quality and safety practices. This annotated bibliography was created to analyze and augment the current literature on ambulatory care practices with regard to patient safety and quality improvement. By providing a thorough examination of current practices, potential improvement strategies in ambulatory care health care settings can be suggested. A better understanding of the myriad factors that influence delivery of patient care will catalyze future health care system development and implementation in the ambulatory setting
Text Summarization Techniques: A Brief Survey
In recent years, there has been a explosion in the amount of text data from a
variety of sources. This volume of text is an invaluable source of information
and knowledge which needs to be effectively summarized to be useful. In this
review, the main approaches to automatic text summarization are described. We
review the different processes for summarization and describe the effectiveness
and shortcomings of the different methods.Comment: Some of references format have update
Color centers in hexagonal boron nitride monolayers: A group theory and ab-initio analysis
We theoretically study physical properties of the most promising color center
candidates for the recently observed single-photon emissions in hexagonal boron
nitride (h-BN) monolayers. Through our group theory analysis combined with
density functional theory (DFT) calculations we provide several pieces of
evidence that the electronic properties of the color centers match the
characters of the experimentally observed emitters. We calculate the
symmetry-adapted multi-electron wavefunctions of the defects using group theory
methods and analyze the spin-orbit and spin-spin interactions in detail. We
also identify the radiative and non-radiative transition channels for each
color center. An advanced ab-initio DFT method is then used to compute energy
levels of the color centers and their zero-phonon-line (ZPL) emissions. The
computed ZPLs, the profile of excitation and emission dipole polarizations, and
the competing relaxation processes are discussed and matched with the observed
emission lines. By providing evidence for the relation between single-photon
emitters and local defects in h-BN, this work provides the first steps towards
harnessing quantum dynamics of these color centers.Comment: 11 pages, 5 figure
Lower bounds for polynomials using geometric programming
We make use of a result of Hurwitz and Reznick, and a consequence of this
result due to Fidalgo and Kovacec, to determine a new sufficient condition for
a polynomial of even degree to be a sum of
squares. This result generalizes a result of Lasserre and a result of Fidalgo
and Kovacec, and it also generalizes the improvements of these results given in
[6]. We apply this result to obtain a new lower bound for , and we
explain how can be computed using geometric programming. The lower
bound is generally not as good as the lower bound introduced
by Lasserre and Parrilo and Sturmfels, which is computed using semidefinite
programming, but a run time comparison shows that, in practice, the computation
of is much faster. The computation is simplest when the highest degree
term of has the form , , . The
lower bounds for established in [6] are obtained by evaluating the
objective function of the geometric program at the appropriate feasible points
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