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3 results on '"Starr, R. L"'

1. Conceptual design study for an advanced cab and visual system, volume 2

Author

Rue, R. J, Cyrus, M. L, Garnett, T. A, Nachbor, J. W, Seery, J. A, and Starr, R. L

Subjects
Research And Support Facilities (Air)
Abstract

The performance, design, construction and testing requirements are defined for developing an advanced cab and visual system. The rotorcraft system integration simulator is composed of the advanced cab and visual system and the rotorcraft system motion generator, and is part of an existing simulation facility. User's applications for the simulator include rotorcraft design development, product improvement, threat assessment, and accident investigation.

Published
1980

2. Conceptual design study for an advanced cab and visual system, volume 1

Author

Rue, R. J, Cyrus, M. L, Garnett, T. A, Nachbor, J. W, Seery, J. A, and Starr, R. L

Subjects
Research And Support Facilities (Air)
Abstract

A conceptual design study was conducted to define requirements for an advanced cab and visual system. The rotorcraft system integration simulator is for engineering studies in the area of mission associated vehicle handling qualities. Principally a technology survey and assessment of existing and proposed simulator visual display systems, image generation systems, modular cab designs, and simulator control station designs were performed and are discussed. State of the art survey data were used to synthesize a set of preliminary visual display system concepts of which five candidate display configurations were selected for further evaluation. Basic display concepts incorporated in these configurations included: real image projection, using either periscopes, fiber optic bundles, or scanned laser optics; and virtual imaging with helmet mounted displays. These display concepts were integrated in the study with a simulator cab concept employing a modular base for aircraft controls, crew seating, and instrumentation (or other) displays. A simple concept to induce vibration in the various modules was developed and is described. Results of evaluations and trade offs related to the candidate system concepts are given, along with a suggested weighting scheme for numerically comparing visual system performance characteristics.

Published
1980

3. The value of multiple preparations in the diagnosis of malignant pleural effusions. A cost-benefit analysis.

Author

Starr RL and Sherman ME

Subjects
Cost-Benefit Analysis, Humans, Sensitivity and Specificity, Histocytological Preparation Techniques economics, Pleural Effusion, Malignant pathology
Abstract

A cost-benefit analysis of five techniques employed in processing 108 malignant pleural effusions for cytopathologic examination was performed. Ethanol-fixed, Papanicolaou-stained smears were positive in 68% of the effusions, air-dried Diff-Quik-stained smears in 66%, Cytospins in 83%, cell blocks in 85% and Millipore filters in 85%. Examination of one air-dried smear and one ethanol-fixed smear yielded a diagnostic sensitivity of 82%. Using a combination of two smears and one of three concentrating techniques (Cytospin, cell block or MIllipore filter) would have provided a diagnosis in over 90% of the effusions. The use of four or more preparations provided more sensitivity than did three preparations and decreased the likelihood that a malignant diagnosis would be based on the findings in only one preparation. The costs related to disposable materials and the College of American Pathologists (CAP) work load estimates for specimen preparation, staining and screening were compared. These data may be useful in developing optimal protocols for pleural effusion preparation in laboratories with specific work load requirements and limited resources.

Published
1991

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