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173 research data, page 1 of 18

National Ambulatory Medical Care Survey, 1995

United States Department of Health and Human Services. National Center for Health Statistics (1998)
Publisher: ICPSR - Interuniversity Consortium for Political and Social Research
The National Ambulatory Medical Care Surveys (NAMCS) supply data on ambulatory medical care provided in physicians' offices. The 1995 survey contains information from 36,875 patient visits to 1,883 physicians' offices. Data are available on the patient's smoking habits, reason for the visit, expected source of payment, the physician's diagnosis, and the kinds of diagnostic and therapeutic services rendered. Other variables cover drugs/medications ordered, administered, or provided during offi...

A Measurement of the total cross-section for e+ e- ---> hadrons at s**(1/2) = 10.52-GeV

CORNELL-CESR. Measurement of R at centre-of-mass energy 10.52 GeV and derivation of ALPHA_S.

Measurement of the fraction of hadronic Z decays into charm quark pairs

CERN-LEP. Measurement of the fraction of hadronic Z0 decays (R_c) with charm quark pairs using a sample of 3.7 million hadronic decays collected between 1992 and 1995. R is determined by three methods, one using the inclusive electron spectrum and the other two using a double-tagging technique which is independent of the charm tagging efficiency. The average value is quoted here.

Global River Discharge, 1807-1991, V[ersion]. 1.1 (RivDIS)

VOROSMARTY, C.J.; Fekete, B.M.; Tucker, B.A. (1998)
Publisher: ORNL Distributed Active Archive Center
The Global Monthly River Discharge Data Set contains monthly averaged discharge measurements for 1018 stations located throughout the world. The period of record varies widely from station to station with a mean of 21.5 years. The data are derived from the published UNESCO archives for river discharge, and checked against information obtained from the Global Runoff Center in Koblenz, Germany through the U.S. National Geophysical Data Center in Boulder, Colorado. Citation: Vorosmarty, C.J., B...

Measurement of dijet angular distributions and search for quark compositeness

FERMILAB-COLLIDER. Measurement of the angular distribution of dijets produced in pbar-p collisions at a centre-of-mass energy of 1.8 TeV. Data come from anintegrated luminosity of 94pb-1 collected buring 1993-95. The variable CHI is defined as:. CHI=(1+ABS(COS(THETA*)))/(1-ABS(COS(THETA*))). = EXP(ABS(ETARAP(JET1)-ETARAP(JET2))). where THETA* is the cm scattering angle and ETARAP the jets pseudorapidity.

The role of double parton collisions in soft hadron interactions

FERMILAB-TEVATRON. Measurement of the charged particle multiplicity distribution at centre-of mass energies fom 30 to 1800 GeV. The data coded here are for the 1800 GeV data. Numerical values obtained from the experimenters.

Measurement of the t distribution in diffractive photoproduction at HERA

DESY-HERA. Measurement of the T distribution in diffractive photoproductionproduced in the interaction of 27.5 GeV positrons and 820 GeV protons, in the p hoton-proton centre-of-mass energy range 176 to 225 GeV. Numerical values supplied by A Garfagnini.

A gradient-based optimisation scheme for optical tomography

Arridge, Simon R.; Martin Schweiger (1998)
Publisher: Figshare
Optical tomography schemes using non-linear optimisation are usually based on a Newton-like method involving the construction and inversion of a large Jacobian matrix. Although such matrices can be efficiently constructed using a reciprocity principle, their inversion is still computationally difficult. In this paper we demonstrate a simple means to obtain the gradient of the objective function directly, leading to straightforward application of gradient-based optimisation methods.

Search for top squark pair production in the dielectron channel

FNAL-COLLIDER. Search for top squark pair production in the dielectron channel. 74.9 +- 8.9 1/pb integrated luminosity.

Experimental studies of Bose-Einstein condensation

Durfee, Dallin S.; Wolfgang Ketterle (1998)
Publisher: Figshare
We describe several experimental studies of Bose-Einstein condensation in a dilute gas of sodium atoms. These include studies of static and dynamic behavior of the condensate, and of its coherence properties.