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Physical Sciences and Mathematics Commons

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SelectedWorks

1991

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Articles 1 - 9 of 9

Full-Text Articles in Physical Sciences and Mathematics

Reproducibility And Responsiveness Of Health Status Measures. Statistics And Strategies For Evaluation, Paula Diehr, Richard Deyo Aug 1991

Reproducibility And Responsiveness Of Health Status Measures. Statistics And Strategies For Evaluation, Paula Diehr, Richard Deyo

Paula Diehr

Before being introduced to wide use, health status instruments should be evaluated for reliability and validity. Increasingly, they are also tested for responsiveness to important clinical changes. Although standards exist for assessing these properties, confusion and inconsistency arise because multiple statistics are used for the same property; controversy exists over how to measure responsiveness; many statistics are unavailable on common software programs; strategies for measuring these properties vary; and it is often unclear how to define a clinically important change in patient status. Using data from a clinical trial of therapy for back pain, we demonstrate the calculation of several …


Parallel Algorithms For Graph Problems, Panagiotis T. Metaxas Jul 1991

Parallel Algorithms For Graph Problems, Panagiotis T. Metaxas

Panagiotis T Metaxas

PhD Thesis about computing connected components in parallel.


Transport Processes And Traveling Waves In Systems With Local Nonequilibrium, Sergey Sobolev Mar 1991

Transport Processes And Traveling Waves In Systems With Local Nonequilibrium, Sergey Sobolev

Sergey Sobolev

No abstract provided.


The T-Designs On 13 Points With A Primitive Group Of Order 78 As A Group Of Automorphism, M. R. Darafsheh, M. Rajabi Tarkhorani, Saeid Abbasbandy Jan 1991

The T-Designs On 13 Points With A Primitive Group Of Order 78 As A Group Of Automorphism, M. R. Darafsheh, M. Rajabi Tarkhorani, Saeid Abbasbandy

Saeid Abbasbandy

No abstract provided.


A Software World, David Morgan Lochhead Jan 1991

A Software World, David Morgan Lochhead

Dr. David Morgan Lochhead

What are the consequences when software defines reality? This essay was prepared for presentation at a church related computer event in 1991, but was never presented after the event was cancelled


Estimating County Percentages Of People Without Health Insurance, Paula Diehr Jan 1991

Estimating County Percentages Of People Without Health Insurance, Paula Diehr

Paula Diehr

County data on the percentage of people without health insurance are seldom available, although state program planning requires such information. As part of an evaluation of Washington's Basic Health Plan (BHP), we conducted a telephone survey in nine Washington counties to estimate the percentage of people under the age of 65 who were uninsured. We used regression analysis to estimate the percentage uninsured in a county as a function of the percentage unemployed. Two validation approaches yielded very good results, suggesting that the equation could be used to estimate the percentage uninsured in unsurveyed counties. The variation ranged from 15% …


Characterization Of Sh Groups In Porin Of Bovine Heart Mitochondria. Porin Cysteines Are Localized In The Channel Walls., Philadelphia University Jan 1991

Characterization Of Sh Groups In Porin Of Bovine Heart Mitochondria. Porin Cysteines Are Localized In The Channel Walls., Philadelphia University

Philadelphia University, Jordan

No abstract provided.


Elucidation Of Electronic Structure By The Analysis Of Hyperfine Interactions: The Mnh A 7-Pi - X 7-Sigma(+) (0,0) Band, Thomas Varberg, R. W. Field, A. J. Merer Jan 1991

Elucidation Of Electronic Structure By The Analysis Of Hyperfine Interactions: The Mnh A 7-Pi - X 7-Sigma(+) (0,0) Band, Thomas Varberg, R. W. Field, A. J. Merer

Thomas D. Varberg

No abstract provided.


Determination Of Rate Distributions From Kinetic Experiments, Todd B. Sauke, P. J. Steinback, K. Chu, H. Frauenfelder, J. B. Johnson, D. C. Lamb, G. U. Nienhaus, R. D. Young Jan 1991

Determination Of Rate Distributions From Kinetic Experiments, Todd B. Sauke, P. J. Steinback, K. Chu, H. Frauenfelder, J. B. Johnson, D. C. Lamb, G. U. Nienhaus, R. D. Young

Todd B. Sauke

Rate processes in proteins are often not adequately described by simple exponential kinetics. Instead of modeling the kinetics in the time domain, it can be advantageous to perform a numerical inversion leading to a rate distribution function f(lambda). The features observed in f(lambda) (number, positions, and shapes of peaks) can then be interpreted. We discuss different numerical techniques for obtaining rate distribution functions, with special emphasis on the maximum entropy method. Examples are given for the application of these techniques to flash photolysis data of heme proteins.