1,774 research outputs found
IMPROVING COLORECTAL CANCER SCREENING RATES IN PERRY COUNTY
Appalachian Kentucky has one of the highest incidence and mortality rates from colorectal cancer (CRC) in the country. CRC is curable if identified early through screening. However, Perry County has suboptimal screening levels. A multimodal program of patient reminders and mailed screenings will be used to increase CRC screening rates in Perry County. The primary outcome will be evaluated using a T-test for this prospective cohort study. Short term outcomes include increased CRC screening rates in delinquent patients. Long term outcomes include increased CRC detection rates and decreased CRC mortality in Perry County
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Session report: Physical modelling in geotechnical earthquake engineering
Geotechncial earthquake engineering continues to be an important area of research for physical modellers. There were 13 papers presented in this session. These papers and the direction of future research in this area are discussed in this session report. This is the accepted manuscript. The final version is available at http://www.icevirtuallibrary.com/content/article/10.1680/ijpmg.14.00033
Design of Optimum Ducts Using an Efficient 3-D Viscous Computational Flow Analysis
Design of fluid dynamically efficient ducts is addressed through the combination of an optimization analysis with a three-dimensional viscous fluid dynamic analysis code. For efficiency, a parabolic fluid dynamic analysis was used. Since each function evaluation in an optimization analysis is a full three-dimensional viscous flow analysis requiring 200,000 grid points, it is important to use both an efficient fluid dynamic analysis and an efficient optimization technique. Three optimization techniques are evaluated on a series of test functions. The Quasi-Newton (BFGS, eta = .9) technique was selected as the preferred technique. A series of basic duct design problems are performed. On a two-parameter optimization problem, the BFGS technique is demonstrated to require half as many function evaluations as a steepest descent technique
Storage Devices
A subnetwork of storage devices that are connected with one another over a high speed network connection is Storage Area Network(SAN). It allows all designated users on the network to access multiple storage devices not only the storage devices installed within their computers. Once a SAN is constructed and all the storage devices are shared within the SAN, it is than connected to the servers that are accessed by network users. Large backup disk arrays can be stored on an off-site location and shared on a SAN where users can access them remotely. SANs are used for storage redundancy purposes in case of unexpected disaster and loss of data. A SAN typically supports data storage, retrieval and replication on business networks using high-end servers, multiple disk arrays and interconnect technology
Post-liquefaction reconsolidation of sand.
Loosely packed sand that is saturated with water can liquefy during an earthquake, potentially causing significant damage. Once the shaking is over, the excess pore water pressures that developed during the earthquake gradually dissipate, while the surface of the soil settles, in a process called post-liquefaction reconsolidation. When examining reconsolidation, the soil is typically divided in liquefied and solidified parts, which are modelled separately. The aim of this paper is to show that this fragmentation is not necessary. By assuming that the hydraulic conductivity and the one-dimensional stiffness of liquefied sand have real, positive values, the equation of consolidation can be numerically solved throughout a reconsolidating layer. Predictions made in this manner show good agreement with geotechnical centrifuge experiments. It is shown that the variation of one-dimensional stiffness with effective stress and void ratio is the most crucial parameter in accurately capturing reconsolidation.This is the author accepted manuscript. The final version is available from Royal Society Publishing via https://doi.org10.1098/rspa.2015.074
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