The luminosity function of quasars and its evolution - A comparison of optically selected quasars and quasars found in radio catalogs.
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SEARCH · Engineering Papers
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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The availability of space science data, a description of the data, and a description of the services supplied by the National Space Science Data Center (NSSDC) is presented. A series of cumulative indexes that reference the data descriptions contain: (1) a chronological listing of all spacecraft, experiments, and data descriptions; (2) an index of all spacecraft described, identified by common names and alternate names; (3) a listing of the original experiment institutions for experiments described; (4) a listing of the investigators associated with the experiments and their current affiliations; and (5) two displays of information about experiment data coverage for fields and particle data and a listing of all experiments sorted by phenomenon measured.
For abstract, see N74-27815.
For abstract, see N74-27815.
For abstract, see N74-27815.
For abstract, see N74-27815.
A data collection process is described for the purpose of discerning causation factors of accidents, and the establishment of boundaries or controls aimed at mitigating and eliminating accidents. A procedure is proposed that suggests a discipline approach to hazard identification based on energy interrelationships together with an integrated control technique which takes the form of checklists.
For abstract, see N74-28800.
For abstract, see N74-28802.
For abstract, see N74-28802.
For abstract, see N74-28802.
For abstract, see N74-28899.
For abstract, see N74-28906.
For abstract, see N74-28899.
For abstract, see N74-28899.
For abstract, see N74-28899.
For abstract, see N74-28899.
For abstract, see N74-28899.