An extended syntax-directed translation scheme /

Bibliography: p. 36.

Syntactic error recovery for LR parsers /

Thesis (M. S.)--University of Illinois at Urbana-Champaign.

A generalized lexical scanner for a translator writing system.

Originally presented as the author's thesis (M.S.), University of Illinois at Urbana-Champaign.

User's manual for PAX an IBM 7090 program to simulate the pattern articulation unit of ILLIAC III /

"This work was supported in part by Contract No. AT(11-1)-1018 of the Atomic Energy Commission. This report supercedes File No. 513."

A text editor design /

Originally presented as the author's thesis (M.S.), University of Illinois.

A BASIC language interpreter for the Intel 8008 microprocessor /

Mode of access: Internet.

Orderings for term-rewriting systems /

"Research supported in part under NSF grant MCS 77-22830."

Well-founded orderings for proving termination of systems of rewrite rules /

Bibliography: p. 34.

Bubble scan I program /

"This work was supported in part by the Atomic Energy Commission under Contract No. AT(11-1)-1018"

Storm surge simulation in transformed coordinates /

"November 1976."

Subroutines for CAMAC /

Issued June 1978.

The calculation of three-dimensional supersonic flows around spherically-capped smooth bodies and wings

"Work performed for the Air Force Flight Dynamics Laboratory...by the Aerodynamics Research Department of the Northrup Corporation, Aircraft Division."

High velocity jet noise source location and reduction.

"February 22, 1977."

Research in computerized structural analysis and synthesis : research-in-progress papers presented at a symposium /

Incldues bibliographical references

Quantification of the magnification and distortion effects of a pediatric flexible video-bronchoscope

Background: Flexible video bronchoscopes, in particular the Olympus BF Type 3C160, are commonly used in pediatric respiratory medicine. There is no data on the magnification and distortion effects of these bronchoscopes yet important clinical decisions are made from the images. The aim of this study was to systematically describe the magnification and distortion of flexible bronchoscope images taken at various distances from the object. Methods: Using images of known objects and processing these by digital video and computer programs both magnification and distortion scales were derived. Results: Magnification changes as a linear function between 100 mm ( x 1) and 10 mm ( x 9.55) and then as an exponential function between 10 mm and 3 mm ( x 40) from the object. Magnification depends on the axis of orientation of the object to the optic axis or geometrical axis of the bronchoscope. Magnification also varies across the field of view with the central magnification being 39% greater than at the periphery of the field of view at 15 mm from the object. However, in the paediatric situation the diameter of the orifices is usually less than 10 mm and thus this limits the exposure to these peripheral limits of magnification reduction. Intraclass correlations for measurements and repeatability studies between instruments are very high, r = 0.96. Distortion occurs as both barrel and geometric types but both types are heterogeneous across the field of view. Distortion of geometric type ranges up to 30% at 3 mm from the object but may be as low as 5% depending on the position of the object in relation to the optic axis. Conclusion: We conclude that the optimal working distance range is between 40 and 10 mm from the object. However the clinician should be cognisant of both variations in magnification and distortion in clinical judgements.