204 research outputs found
Antibiotic prescribing pattern in paediatric in patients with first time wheezing
<p>Abstract</p> <p>Background</p> <p>Acute wheezers for the first time in life are an important target group for efforts aimed at reducing unnecessary antibiotic use.</p> <p>Objective</p> <p>To evaluate the effect of clinical, laboratory and radiological data on the decision to prescribe antibiotics to paediatric patients with first time wheezing as well as to seek criteria that would justify antibiotic use.</p> <p>Methods</p> <p>A prospective study was made of 47 previous healthy children admitted to our hospital with first time wheezing in life between October 2008- March 2009. All the patients were treated as per the treating unit's protocol with oxygen, bronchodilators with or without antibiotics. The cases were analyzed after discharge and the characteristics of those treated with antibiotics (n = 23) were compared with those who were not (n = 24) and analyzed statistically to find the predictors for antibiotic usage.</p> <p>Results</p> <p>The mean age of the study groups was 5.8 (+/- 5.1) months. Among the clinical and investigational parameters, presence of predominant crackles and abnormalities on radiograph were the major determinants for antibiotic usage. There were no significant differences in final outcome between these groups.</p> <p>Conclusion</p> <p>Antibiotic usage in first time wheezers is still quite prevalent. Presence of crackles and radiological abnormalities often prompt the usage of antibiotics in such cases.</p
Database creation in IIT Delhi Library : some strategic issues
A brief overview on the database creation efforts at the Indian Institute of Technology is given, together with discussions on the related strategic issues
Coherent state triplets and their inner products
It is shown that if H is a Hilbert space for a representation of a group G,
then there are triplets of spaces F_H, H, F^H, in which F^H is a space of
coherent state or vector coherent state wave functions and F_H is its dual
relative to a conveniently defined measure. It is shown also that there is a
sequence of maps F_H -> H -> F^H which facilitates the construction of the
corresponding inner products. After completion if necessary, the F_H, H, and
F^H, become isomorphic Hilbert spaces. It is shown that the inner product for H
is often easier to evaluate in F_H than F^H. Thus, we obtain integral
expressions for the inner products of coherent state and vector coherent state
representations. These expressions are equivalent to the algebraic expressions
of K-matrix theory, but they are frequently more efficient to apply. The
construction is illustrated by many examples.Comment: 33 pages, RevTex (Latex2.09) This paper is withdrawn because it
contained errors that are being correcte
Asymptotics and Dimensional Dependence of the Number of Critical Points of Random Holomorphic Sections
We prove two conjectures from [M. R. Douglas, B. Shiffman and S. Zelditch,
Critical points and supersymmetric vacua, II: Asymptotics and extremal metrics.
J. Differential Geom. 72 (2006), no. 3, 381-427] concerning the expected number
of critical points of random holomorphic sections of a positive line bundle. We
show that, on average, the critical points of minimal Morse index are the most
plentiful for holomorphic sections of {\mathcal O}(N) \to \CP^m and, in an
asymptotic sense, for those of line bundles over general K\"ahler manifolds. We
calculate the expected number of these critical points for the respective cases
and use these to obtain growth rates and asymptotic bounds for the total
expected number of critical points in these cases. This line of research was
motivated by landscape problems in string theory and spin glasses.Comment: 14 pages, corrected typo
Intertwining Operator Realization of the AdS/CFT Correspondence
We give a group-theoretic interpretation of the AdS/CFT correspondence as
relation of representation equivalence between representations of the conformal
group describing the bulk AdS fields and the coupled boundary fields
and . We use two kinds of equivalences. The first kind is
equivalence between bulk fields and boundary fields and is established here.
The second kind is the equivalence between coupled boundary fields. Operators
realizing the first kind of equivalence for special cases were given by Witten
and others - here they are constructed in a more general setting from the
requirement that they are intertwining operators. The intertwining operators
realizing the second kind of equivalence are provided by the standard conformal
two-point functions. Using both equivalences we find that the bulk field has in
fact two boundary fields, namely, the coupled boundary fields. Thus, from the
viewpoint of the bulk-boundary correspondence the coupled fields are on an
equal footing. Our setting is more general since our bulk fields are described
by representations of the Euclidean conformal group , induced from
representations of the maximal compact subgroup of . From
these large reducible representations we can single out representations which
are equivalent to conformal boundary representations labelled by the conformal
weight and by arbitrary representations of the Euclidean Lorentz group
, such that is contained in the restriction of to .
Thus, our boundary-to-bulk operators can be compared with those in the
literature only when for a fixed we consider a 'minimal' representation
containing .Comment: 25 pages, TEX file using harvmac.tex; v2: misprints corrected; to
appear in Nuclear Physics
On Hubbard-Stratonovich Transformations over Hyperbolic Domains
We discuss and prove validity of the Hubbard-Stratonovich (HS) identities
over hyperbolic domains which are used frequently in the studies on disordered
systems and random matrices. We also introduce a counterpart of the HS identity
arising in disordered systems with "chiral" symmetry. Apart from this we
outline a way of deriving the nonlinear -model from the gauge-invariant
Wegner orbital model avoiding the use of the HS transformations.Comment: More accurate proofs are given; a few misprints are corrected; a
misleading reference and a footnote in the end of section 2.2 are remove
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