4,657 research outputs found
Adaptive quantum state tomography improves accuracy quadratically
We introduce a simple protocol for adaptive quantum state tomography, which
reduces the worst-case infidelity between the estimate and the true state from
to . It uses a single adaptation step and just one
extra measurement setting. In a linear optical qubit experiment, we demonstrate
a full order of magnitude reduction in infidelity (from to ) for
a modest number of samples ().Comment: 8 pages, 7 figure
Detection of quantitative trait loci for locomotion and osteochondrosis-related traits in Large White x Meishan pigs.
Improving the health of diabetic patients through resident-initiated group visits
BACKGROUND AND OBJECTIVES: Group visits have the potential to benefit patients with chronic illnesses. Our objective was to implement resident-run diabetic group visits that would improve patient education and help patients become more involved in their care.
METHODS: We developed systems to promote, coordinate, and lead the visits. Residents\u27 responsibilities were delegated through a preparation checklist. A standardized progress note was developed to encourage patient goal setting and to track relevant laboratory test results. To evaluate our program, we conducted surveys to determine patients\u27 behavioral changes and satisfaction levels and assessed the effect on group visit participants\u27 glycated hemoglobin (HbA1c) and low-density lipoprotein (LDL) levels.
RESULTS: Group visit patient survey results showed that 72% of the patients in the group visit cohort reported making a lifestyle change; 88% felt that the group visit helped them achieve better control of their diabetes, and 100% stated that they would come to a group visit again. However, no significant changes were noted in HbA1c or LDL levels.
CONCLUSIONS: Residents can overcome challenges and implement, organize, and run effective group visits that increase patients\u27 self-reported self-management abilities, but we could demonstrate no statistically significant improvement on measurable biochemical parameters of glucose or lipid control
Characterisation of a new VUV beamline at the Daresbury SRS using a dispersed fluorescence apparatus incorporating CCD detection
The design and performance of a new normal incidence monochromator at the Daresbury Synchrotron Radiation Source, optimised for experiments requiring high flux of vacuum-UV radiation, are described. The re-developed beamline 3.1, based on the Wadsworth design of monochromator, is the source of tunable vacuum-UV photons in the range 4 – 31 eV, providing over two orders of magnitude more flux than the vacuum-UV, Seya monochromator in its previous manifestation. The undispersed and dispersed fluorescence spectra resulting from photoexcitation of N, CO, CF and CF are presented. Emitting species observed were N B - X, CO A - X and B - X, CF CT - XT and CT - AT, CF* A - A, and CF BA - XE. A CCD multi-channel detector has significantly reduced the time period needed to record dispersed fluorescence spectra with a comparable signal-to-noise ratio
Geometrical analysis of the inland topography to assess the likely response of wave-dominated coastline to sea level: application to Great Britain
The need for quantitative assessments at a large spatial scale (103 km) and over time horizons of the order 101 to 102 years have been reinforced by the 2019 Special Report on the Ocean and Cryosphere in a Changing Climate, which concluded that adaptation to a sea-level rise will be needed no matter what emission scenario is followed. Here, we used a simple geometrical analysis of the backshore topography to assess the likely response of any wave-dominated coastline to a sea-level rise, and we applied it along the entire Great Britain (GB) coastline, which is ca. 17,820 km long. We illustrated how the backshore geometry can be linked to the shoreline response (rate of change and net response: erosion or accretion) to a sea-level rise by using a generalized shoreline Exner equation, which includes the effect of the backshore slope and differences in sediment fractions within the nearshore. To apply this to the whole of GB, we developed an automated delineation approach to extract the main geometrical attributes. Our analysis suggests that 71% of the coast of GB is best described as gentle coast, including estuarine coastline or open coasts where back-barrier beaches can form. The remaining 39% is best described as cliff-type coastlines, for which the majority (57%) of the backshore slope values are negative, suggesting that a non-equilibrium trajectory will most likely be followed as a response to a rise in sea level. For the remaining 43% of the cliffed coast, we have provided regional statistics showing where the potential sinks and sources of sediment are likely to be
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