188,059 research outputs found
Leading Causes of Death in Vietnam
Vietnam is currently facing a public health crisis. Rates of chronic and preventable diseases are climbing, in addition to mortality rates from these diseases. If nothing is done to halt these rising rates, the health of the Vietnamese people will only continue to decline. Although there may be many factors contributing to these high death rates due to chronic diseases, risky health behaviors, such as smoking, and the state of the healthcare system can be considered two main contributors to the leading causes of death in Vietnam. The high smoking rates and high costs of healthcare are hindering the health of Vietnam, and may be related to the top causes of death, including stroke, ischemic heart disease, chronic obstructive pulmonary disease (COPD), and lower respiratory infections (World Health Organization and UN partners, 2015). Implementing government programs, including smoking cessation, smoking education, tobacco taxes, healthcare education, and continued work toward universal healthcare coverage, will hopefully help decrease the rising rates of chronic diseases and the high mortality rates they cause.https://jdc.jefferson.edu/cwicposters/1033/thumbnail.jp
Pinching of the First Eigenvalue of the Laplacian and almost-Einstein Hypersurfaces of the Euclidean Space
In this paper, we prove new pinching theorems for the first eigenvalue of the
Laplacian on compact hypersurfaces of the Euclidean space. These pinching
results are associated with the upper bound for the first eigenvalue in terms
of higher order mean curvatures. We show that under a suitable pinching
condition, the hypersurface is diffeomorpic and almost isometric to a standard
sphere. Moreover, as a corollary, we show that a hypersurface of the Euclidean
space which is almost Einstein is diffeomorpic and almost isometric to a
standard sphere.Comment: 18 page
Follow-up of referrals to the Social Service Department from the Out-Patient Department at the Boston State Hospital during 1950.
Thesis (M.S.)--Boston Universit
Learning to Resolve Natural Language Ambiguities: A Unified Approach
We analyze a few of the commonly used statistics based and machine learning
algorithms for natural language disambiguation tasks and observe that they can
be re-cast as learning linear separators in the feature space. Each of the
methods makes a priori assumptions, which it employs, given the data, when
searching for its hypothesis. Nevertheless, as we show, it searches a space
that is as rich as the space of all linear separators. We use this to build an
argument for a data driven approach which merely searches for a good linear
separator in the feature space, without further assumptions on the domain or a
specific problem.
We present such an approach - a sparse network of linear separators,
utilizing the Winnow learning algorithm - and show how to use it in a variety
of ambiguity resolution problems. The learning approach presented is
attribute-efficient and, therefore, appropriate for domains having very large
number of attributes.
In particular, we present an extensive experimental comparison of our
approach with other methods on several well studied lexical disambiguation
tasks such as context-sensitive spelling correction, prepositional phrase
attachment and part of speech tagging. In all cases we show that our approach
either outperforms other methods tried for these tasks or performs comparably
to the best
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