Interpolation algorithms and image data artifacts

Interpolation, or resampling coefficients, which are generated from low pass filter Fourier transforms yield more accurate resampled values than those obtained using cubic spline techniques. This is due to the utilization of six data points rather than four as currently used in cubic spline analysis. After resampling functions are applied to image data, artifacts which are similar to ringing may become pronounced. These effects are often present in the original data and the interpolation merely enhances them

Detection of ocean color changes from high altitudes

The detection of ocean color changes, thought to be due to chlorophyll concentrations and gelbstoffe variations, is attempted from high altitude (11.3km) and low altitude (0.3km). The atmospheric back scattering is shown to reduce contrast, but not sufficiently to obscure color change detection at high altitudes

Gas flows in elliptical galaxies

In preparation for the next generation of x ray telescopes, researchers have begun a program investigating the evolving x ray properties of elliptical galaxies. Their galaxy models consist of a modified King profile for the luminous portion of the galaxy and can include an isothermal dark halo comprising 90 percent of the total mass. The stellar population is assumed to form at a rate which decreases exponentially on a dynamical time scale with a Salpeter initial mass function. Stellar mass loss occurs instantaneously as stars evolve off the main sequence. All stars more massive than 8 solar mass produce type II supernovae, while less massive stars loss mass through a planetary nebulae. The evolving rate of type I supernovae is normalized to a fraction, gamma sub sn I, of Tammann's (1974) value. All of this information is then incorporated into a one-dimensional hydrodynamics code to determine the evolving dynamical state of the interstellar medium

Data base for crack growth properties of materials

A computerized data base of crack growth properties of materials was developed for use in fracture control analysis of rocket engine components and other NASA space hardware. The software system has files of basic crack growth rate data, other fracture mechanics material properties such as fracture toughness and environmental crack growth threshold values, and plotting and fitting routines for deriving material properties for use in fracture control analysis. An extensive amount of data was collected and entered, and work is continuing on compiling additional data. The data base and software codes are useful both for fracture control analysis and for evaluation or development of improved crack growth theories

Mobile Video Monitoring to Reduce Falls and Sitter Usage

In the United States between 700,000 to 1,000,000 people fall in hospitals each year. Reducing patient falls in the inpatient setting remains a challenge for many acute care hospitals. Inpatient falls can lead to serious injuries such as fractures and internal bleeding. Fall-related complications can lead to increased hospital stay, prolonged rehabilitation, and increased healthcare costs. Inpatient falls are considered preventable. One intervention commonly used to prevent falls and keep patients safe is the use of an in-person sitter or a patient safety companion (PSC). However, sitters are very costly and considered a variable staffing resource. The need for a sitter can be difficult to predict and adequately staff. Many organizations are looking for ways to reduce sitter usage and costs. Research suggests reducing sitter use does not negatively influence patient fall rates and fall with injury rates. An alternative solution to reduce sitter usage is mobile video monitoring. Mobile video monitoring is an innovative tool that has been shown to significantly reduce healthcare cost and reduce patient falls and falls with injury. The purpose of this project was to implement mobile video monitoring to decrease fall incidences, fall with injury incidences, and decrease sitter usage and costs. Demographic data, sitter hours, falls, and fall with injury incidences were collected. Results indicated no significant difference in falls and falls with injury with use of mobile video monitoring versus an in-person sitter. Sitter hours and sitter costs decreased with use of mobile video monitoring during the 44 day pilot

Kapampangan Dictionary

Humanities Open Book Program, a joint initiative of the National Endowment for the Humanities and the Andrew W. Mellon FoundationThe Philippines series of the PALI Language Texts, under the general editorship of Howard P. McKaughan, consists of lesson textbooks, grammars, and dictionaries for seven major Filipino languages

Kapampangan Grammar Notes

Humanities Open Book Program, a joint initiative of the National Endowment for the Humanities and the Andrew W. Mellon FoundationThe Philippines series of the PALI Language Texts, under the general editorship of Howard P. McKaughan, consists of lesson textbooks, grammars, and dictionaries for seven major Filipino languages