A continuous physiological data collector

COP-DAC system utilizes oxygen and carbon dioxide analyzers, gas-flow meter, gas breathe-through system, analog computer, and data storage system to provide actual rather than average measurements of physiological and metabolic functions

Estimating the cost of major ongoing cost plus hardware development programs

Approaches are developed for forecasting the cost of major hardware development programs while these programs are in the design and development C/D phase. Three approaches are developed: a schedule assessment technique for bottom-line summary cost estimation, a detailed cost estimation approach, and an intermediate cost element analysis procedure. The schedule assessment technique was developed using historical cost/schedule performance data

Calling Out the Elephant: An Examination of African American Male Achievement in Community Colleges

This study examines the effects of community college institutional factors on the academic achievement of African American males and their perceptions of their college experience. The authors found that African American men are disproportionately underachieving in community colleges in California. African American men have greater amounts of dissatisfaction with community college and do not engage with the various segments of the college when compared to the other subgroups in the study. Two variables - faculty interaction and campus climate - predicted if African American male students transferred, had higher grade point averages, and graduated at higher rates

Reduction of errors in vibratory gyroscopes by double modulation

Reduction of errors in vibratory gyroscopes by double modulatio

Reconstruction subgrid models for nonpremixed combustion

Large-eddy simulation of combustion problems involves highly nonlinear terms that, when filtered, result in a contribution from subgrid fluctuations of scalars, Z, to the dynamics of the filtered value. This subgrid contribution requires modeling. Reconstruction models try to recover as much information as possible from the resolved field Z, based on a deconvolution procedure to obtain an intermediate field ZM. The approximate reconstruction using moments (ARM) method combines approximate reconstruction, a purely mathematical procedure, with additional physics-based information required to match specific scalar moments, in the simplest case, the Reynolds-averaged value of the subgrid variance. Here, results from the analysis of the ARM model in the case of a spatially evolving turbulent plane jet are presented. A priori and a posteriori evaluations using data from direct numerical simulation are carried out. The nonlinearities considered are representative of reacting flows: power functions, the dependence of the density on the mixture fraction (relevant for conserved scalar approaches) and the Arrhenius nonlinearity (very localized in Z space). Comparisons are made against the more popular beta probability density function (PDF) approach in the a priori analysis, trying to define ranges of validity for each approach. The results show that the ARM model is able to capture the subgrid part of the variance accurately over a wide range of filter sizes and performs well for the different nonlinearities, giving uniformly better predictions than the beta PDF for the polynomial case. In the case of the density and Arrhenius nonlinearities, the relative performance of the ARM and traditional PDF approaches depends on the size of the subgrid variance with respect to a characteristic scale of each function. Furthermore, the sources of error associated with the ARM method are considered and analytical bounds on that error are obtained

The Creative Alliance of New Orleans: A Report on Building the Capacity of a Nonprofit Organization

Building the capacity of nonprofits is important in our current social, economic and philanthropic landscape. The purpose of this report is to provide a guide to nascent nonprofit organizations on how to successfully grow their own capacity. Through an analysis of the current operations of the Creative Alliance of New Orleans, a description of my own duties within this organization, a SWOT analysis, a best practices model, analysis of two other organizations with similarly aligned missions and recommendations for the organization, it is hoped that this report will shed light on this particular organization’s transition from an immature organization into a stable, effective, and mature nonprofit