Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Timothy E. Clark"'
Autor:
Dora Kanellopoulos, Patrick J. Raue, Timothy E. Clark, George S. Alexopoulos, Richard S. Novitch, Jo Anne Sirey
Publikováno v:
The American Journal of Geriatric Psychiatry. 14:466-475
Approximately 30% of patients with chronic obstructive pulmonary disease (COPD) experience depression. Pulmonary rehabilitation for COPD focuses on physical conditioning, but includes behavioral interventions that may address depressive symptoms. Thi
Publikováno v:
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII.
Polymer claddings with low refractive indices for silica core fibers were developed. Applications include fiber lasers and transmission of high power lasers in surgery. For many applications, operating fibers under high temperatures is desirable. In
Publikováno v:
2011 IEEE Avionics, Fiber- Optics and Photonics Technology Conference.
For many avionics applications, the possibility of operating fibers under high temperatures is desirable. Films of polymer fiber cladding were tested at 250°C for periods of up to 10 hours. During this heating, significant changes in Young's modulus
Autor:
Timothy E. Clark, Seung-Jo Kwak
Publikováno v:
SPIE Proceedings.
Low index polymer claddings were developed and tested for use with silica core fibers. Polymers with varying indices of refraction were developed, so that numerical apertures useful for multiple applications were produced. High transmission over a wi
Autor:
Timothy E. Clark, Mark E. Curn
Publikováno v:
Fiber and Integrated Optics. 9:397-406
The proposed use of fiber-optic networks in launch vehicles is examined. A data bus architecture is defined, which would replace the mesh network connecting major second-stage avionic packages, in addition to one replacing the take-off minus zero umb
Autor:
Mark E. Curran, Timothy E. Clark
Publikováno v:
Fiber and Integrated Optics. 9:85-96
Conventional data buses, telemetry links, and sensors using wire harnesses as the transmission media suffer from numerous shortcomings, especially when utilized in spacecraft. This paper describes fiber-optic networks that could be implemented in lau
Publikováno v:
SPIE Proceedings.
Demodulation of internal fiber Bragg grating sensors has been demonstrated. Methods are described by which remote fiber gratings can be interrogated, in order that the direction and magnitude of environmentally induced changes, such as temperature or
Autor:
John Marcin, John R. Todd, Alan A. Joseph, Scott D. Schwab, Chet L. Balestra, Ram L. Levy, Eric Udd, Timothy E. Clark, Herb G. Smith
Publikováno v:
SPIE Proceedings.
FIBER OPTICS DEVELOPMENT AT MCDONNELL DOUGLASEric Udd, Tim Clark, and Al JosephMcDonnell Douglas Electronic Systems CompanyHuntington Beach, CaliforniaRam Levy and Scott SchwabMcDonnell Douglas Research LabSt. Louis, MissouriHerb SmithMcDonnell Aircr
Autor:
Timothy E. Clark, Mary W. Hall
Publikováno v:
Optical Fiber Sensors.
Autor:
Timothy E. Clark, Mary W. Burrell
Publikováno v:
SPIE Proceedings.
Single mode couplers have been utilized as the basis for thermally switched sensors. Fabrication of the switches is described, and the response of the sensors to temperature changes. Wavelength-dependent operation of the devices is also discussed.