16,165 research outputs found
Probing Active to Sterile Neutrino Oscillations in the LENS Detector
Sterile neutrino conversion in meter scale baselines can be sensitively
probed using monoenergetic, sub-MeV, flavor pure e-neutrinos from an artificial
MCi source and the unique technology of LENS designed to oberve the low energy
solar neutrino spectrum via tagged CC e-neutrino capture in 115-In.
Active-sterile oscillations can be directly observed in the granular LENS
detector itself to critically test and extend resuls of short baseline
accelerator and reactor experiments.Comment: 4pages, 4 figures, text and figure change
SMMR Simulator radiative transfer calibration model. 2: Algorithm development
Passive microwave measurements performed from Earth orbit can be used to provide global data on a wide range of geophysical and meteorological phenomena. A Scanning Multichannel Microwave Radiometer (SMMR) is being flown on the Nimbus-G satellite. The SMMR Simulator duplicates the frequency bands utilized in the spacecraft instruments through an amalgamate of radiometer systems. The algorithm developed utilizes data from the fall 1978 NASA CV-990 Nimbus-G underflight test series and subsequent laboratory testing
The EM Algorithm and the Rise of Computational Biology
In the past decade computational biology has grown from a cottage industry
with a handful of researchers to an attractive interdisciplinary field,
catching the attention and imagination of many quantitatively-minded
scientists. Of interest to us is the key role played by the EM algorithm during
this transformation. We survey the use of the EM algorithm in a few important
computational biology problems surrounding the "central dogma"; of molecular
biology: from DNA to RNA and then to proteins. Topics of this article include
sequence motif discovery, protein sequence alignment, population genetics,
evolutionary models and mRNA expression microarray data analysis.Comment: Published in at http://dx.doi.org/10.1214/09-STS312 the Statistical
Science (http://www.imstat.org/sts/) by the Institute of Mathematical
Statistics (http://www.imstat.org
Выделение оползневых границ по динамическим параметрам продольных преломленных волн
Дана стаття присвячена темі виділення кордонів обвального тіла за допомогою динамічних параметрів заломлених хвиль. Проведено визначення кордону двома способами: за допомогою параметра Спаського, а так само за допомогою аналізу спектрів сейсмограм. Здійснена оцінка коефіцієнта загасання сейсмічної хвилі на обвалі небезпечній ділянці.This article is dedicated to the topic selection boundaries of the landslide body by means of dynamic parameters of the refracted waves. Boundary definition is produced in two ways: by Spassky parameter, as well as by analysis of the spectra of seismograms. An assessment of the attenuation coefficient of seismic waves at the landslide site was performed
Thin film superconducting quantum interferometer with ultralow inductance
A simple method has been developed for manufacturing a thin film
superconducting quantum interferometer (SQI) with ultralow inductance (~10^-13
H). Current-voltage and voltage-field characteristics of the SQI are presented.
The basic design equations are obtained and confirmed experimentally. The SQI
has been used for the first time to determine the penetration depth of a
magnetic field into a film of 50% In-50% Sn alloy.Comment: 5 pages, 5 gigure
Interpreting experimental bounds on D^0 - \bar{D^0} mixing in the presence of CP violation
We analyse the most recent experimental data regarding D^0 - \bar{D^0}
mixing, allowing for CP violation. We focus on the dispersive part of the
mixing amplitude, M^D_{12}, which is sensitive to new physics contributions. We
obtain a constraint on the mixing amplitude: |M^D_{12}| < 6.2\times 10^{-11}
MeV at 95% C.L. . This constraint is weaker by a factor of about three than the
one which is obtained when no CP violation is assumed.Comment: 9 pages, revtex4; One reference updated, one reference added,
footnote 3 correcte
Remote sensing of aquatic plants
Various sensors were tested in terms of their ability to detect and discriminate among noxious aquatic macrophytes. A survey of researchers currently studying the problem and a brief summary of their work is included. Results indicated that the sensor types best suited to assessment of the aquatic environment are color, color infrared, and black-and-white infrared film, which furnish consistently high contrasts between aquatic plants and their surroundings
Field-induced paramagnons at the metamagnetic transition in Ca1.8Sr0.2RuO4
The magnetic excitations in Ca1.8Sr0.2RuO4 were studied across the
metamagnetic transition and as a function of temperature using inelastic
neutron scattering. At low temperature and low magnetic field the magnetic
response is dominated by a complex superposition of incommensurate
antiferromagnetic fluctuations. Upon increasing the magnetic field across the
metamagnetic ransition, paramagnon and finally well-defined magnon scattering
is induced, partially suppressing the incommensurate signals. The high-field
phase in Ca1.8Sr0.2RuO4 has, therefore, to be considered as an intrinsically
ferromagnetic state stabilized by the magnetic field
The effect of alternating current on the current states of a quantum interferometer shunted by a superconducting inductance
The patterns of reversible changes in the critical current and discrete
current states of a structure in the form of a superconducting quantum
interferometer shunted by superconducting inductance, as a result of passing an
alternating transport current through the structure and applying an external
alternating magnetic field simultaneously with a direct transport current, was
established. A new type of discrete stationary state was discovered during the
transition of the interferometer to the resistive state caused by the combined
action of direct and alternating transport currents.Comment: 6 pages, 9 figure
An Empirical Analysis of the Propensity of Academics to Engage in Informal University Technology Transfer
Formal university technology transfer mechanisms, through licensing agreements, research joint ventures, and university-based startups, have attracted considerable attention in the academic literature. Surprisingly, there has been little systematic empirical analysis of the propensity of academics to engage in informal technology transfer. This paper presents empirical evidence on the determinants of three types of informal technology transfer by faculty members: knowledge transfer, joint publications with industry scientists, and consulting. We find that male and tenured faculty members are more likely to engage in all three forms of informal technology transfer. We also find that academics who allocate a relatively higher percentage of their time to grants-related research are more likely to engage in informal commercial knowledge transfer.
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