5,510 research outputs found
Interstitial Electronic Localization
We investigate the ground-state properties of a collection of \textit{N}
non-interacting electrons in a macroscopic volume also containing a
crystalline array of \textit{N} spheres of radius each taken as largely
impenetrable to electrons and with proximity of neighboring excluding regions
playing a key physical role. The sole parameter of this quantum system is the
ratio , where is the Wigner- Seitz radius. Two lattices (FCC and
BCC) are selected to illustrate the behavior of the system as a function of
. As this ratio increases valence electrons localize in the
interstitial regions and the relative band-width is
found to decrease monotonically for both. The system is motivated by the
behavior of the alkali metals at significant compression. It accounts for band
narrowing, leads to electronic densities with interstitially centered maxima,
and can be taken as a model which clearly may be improved upon by perturbation
and other methods.Comment: 11 pages, 5 figure
Successful Implementation of the ABCDEF Bundle in the MICU through Interprofessional Collaboration and Teamwork
Earlier this year, members of the medical intensive care unit (MICU) attended an interprofessional workshop that utilized Awakening/Breathing/Choice of Sedation/Delirium/Early Mobility (ABCDE) bundle simulation combined with TeamSTEPPS training to empower care givers to advocate for patient safety while optimizing patient care. The ABCDE bundle is an evidence-based tool designed to implement pain, agitation, and delirium guideline recommendations into routine practice. To further improve patient safety and outcomes and build upon the ABCDE concept, the MICU team developed an interprofession-al practice project by adding routine assessment of need for indwelling Foley catheters to their daily work list, creating the “ABCDEF” bundle
Optimal statistic for detecting gravitational wave signals from binary inspirals with LISA
A binary compact object early in its inspiral phase will be picked up by its
nearly monochromatic gravitational radiation by LISA. But even this innocuous
appearing candidate poses interesting detection challenges. The data that will
be scanned for such sources will be a set of three functions of LISA's twelve
data streams obtained through time-delay interferometry, which is necessary to
cancel the noise contributions from laser-frequency fluctuations and
optical-bench motions to these data streams. We call these three functions
pseudo-detectors. The sensitivity of any pseudo-detector to a given sky
position is a function of LISA's orbital position. Moreover, at a given point
in LISA's orbit, each pseudo-detector has a different sensitivity to the same
sky position. In this work, we obtain the optimal statistic for detecting
gravitational wave signals, such as from compact binaries early in their
inspiral stage, in LISA data. We also present how the sensitivity of LISA,
defined by this optimal statistic, varies as a function of sky position and
LISA's orbital location. Finally, we show how a real-time search for inspiral
signals can be implemented on the LISA data by constructing a bank of templates
in the sky positions.Comment: 22 pages, 15 eps figures, Latex, uses iopart style/class files. Based
on talk given at the 8th Gravitational Wave Data Analysis Workshop,
Milwaukee, USA, December 17-20, 2003. Accepted for publication in Class.
Quant. Gra
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