2,182 research outputs found
Modular space station mockup review and evaluation
The modular space station mockup is described in detail with emphasis on the interior arrangements of the crew living spaces, control center, and general purpose laboratory facilities. The results of three mockup reviews are also presented
Development of a nationwide network for technology transfer
The winter and spring of 1987 saw the cooperative nationwide network for technology transfer translated from concept to reality. The most obvious of the network relationships which were developed or which are anticipated are summarized. The objective was to help assure that every U.S. business which has the capacity to exploit, or the need to obtain new technology in any form, has access to the technology it needs or can use
Study of instabilities and transition to turbulence in a linear hall accelerator
Magnetospheric instabilities and transition to plasma turbulence in Hall current accelerator
Modular space station phase B extension preliminary system design. Volume 2: Operations and crew analyses
All analyses and tradeoffs conducted to establish the MSS operations and crew activities are discussed. The missions and subsystem integrated analyses that were completed to assure compatibility of program elements and consistency with program objectives are presented
DIAL with heterodyne detection including speckle noise: Aircraft/shuttle measurements of O3, H2O, and NH3 with pulsed tunable CO2lasers
A parametric analysis of DIAL sensitivity with heterodyne detection is presented and comparisons with direct detection are discussed. Examples are given for monitoring vertical distributions of O3, H2O, and NH3 using a ground-, aircraft-, or shuttle-based pulsed tunable CO2 laser DIAL system. Results indicate that maximum sensitivity at minimum laser energy per measurement requires multiple pulse operation with the energy per pulse selected so that the measured photon rate is approximately equal to the detector IF bandwidth. Measurement sensitivities can be maximized and interference effects minimized by fine adjustment of measurement frequencies using the tunability of high pressure lasers. The use of rare isotope lasers minimizes loss due to CO2 atmospheric absorption
DIAL with heterodyne detection including speckle noise: Aircraft/shuttle measurements of O3, H2O, and NH3 with pulsed tunable CO2 lasers
Atmospheric trace constituent measurements with higher vertical resolution than attainable with passive radiometers are discussed. Infrared differential absorption lidar (DIAL), which depends on Mie scattering from aerosols, has special advantages for tropospheric and lower stratospheric applications and has great potential importance for measurements from shuttle and aircraft. Differential absorption lidar data reduction involves comparing large amplitude signals which have small differences. The accuracy of the trace constituent concentration inferred from DIAL measurements depends strongly on the errors in determining the amplitude of the signals. Thus, the commonly used SNR expression (signal divided by noise in the absence of signal) is not adequate to describe DIAL measurement accuracy and must be replaced by an expression which includes the random coherent (speckle) noise within the signal. A comprehensive DIAL computer algorithm is modified to include heterodyne detection and speckle noise. Examples for monitoring vertical distributions of O3, H2O, and NH3 using a ground-, aircraft-, or shuttle-based pulsed tunable CO2 laser DIAL system are given
Journal of African Christian Biography
A publication of the Dictionary of African Christian Biography with U.S. offices located at the Center for Global Christianity and Mission at Boston University. This issue focuses on: WOMEN ---
1. Biographies of Kimpa Vita by Norbert Brockman, Mark R. Lipschutz and R. Kent Rasmussen, and Tsimba Mabiala.
2. "The Life and Visions of Krəstos Śämra, a Fifteenth-Century Ethiopian Woman Saint,"--chapter from African Christian Biography: Stories, Lives and Challenges (D. L. Robert, editor) by Wendy Laura Belcher
3. "Queen Njinga and Her Faiths: Religion and Politics in Seventeenth-Century Angola"--chapter from African Christian Biography: Stories, Lives and Challenges (D. L. Robert, editor) by Linda Heywood.
4. Book Notes, by B. Restric
Smiles Of Silver And Kisses Of Gold
https://digitalcommons.library.umaine.edu/mmb-vp/3365/thumbnail.jp
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