Aerospace Medicine and Biology: A continuing supplement 180, May 1978

This special bibliography lists 201 reports, articles, and other documents introduced into the NASA scientific and technical information system in April 1978

Analysis of clustering algorithms for spike sorting of multiunit extracellular recordings

Various techniques have been considered in the past to identify distinct spike shapes from mulitunit extracellular recording. These techniques involve adaptive filtering techniques or template matching techniques or hierarchical clustering techniques. In this investigation, we have used Principal Component Analysis followed by various clustering techniques to identify distinct spike shapes. The amplitude filter is used to separate spikes from background neuronal activity. The correlation matrix of the spike data is used to compute principal component wave forms. Each spike is thus represented by the coefficients of principal components. Then, We have used agglomorative hierarchical clustering algorithm to perform the initial clustering of the data set. The clustering results are then refined by the application of the Estimation Maximization Algorithm. The Bayesian Information Criteria(BIC) is used to find out best fit of the model to the data set

Development of a knowledge-based system for open stope mine design

Imperial Users onl

Quarterly literature review of the remote sensing of natural resources

The Technology Application Center reviewed abstracted literature sources, and selected document data and data gathering techniques which were performed or obtained remotely from space, aircraft or groundbased stations. All of the documentation was related to remote sensing sensors or the remote sensing of the natural resources. Sensors were primarily those operating within the 10 to the minus 8 power to 1 meter wavelength band. Included are NASA Tech Briefs, ARAC Industrial Applications Reports, U.S. Navy Technical Reports, U.S. Patent reports, and other technical articles and reports

Data bases and data base systems related to NASA's aerospace program. A bibliography with indexes

This bibliography lists 1778 reports, articles, and other documents introduced into the NASA scientific and technical information system, 1975 through 1980

Sensory Communication

Contains table of contents for Section 2, an introduction and reports on twelve research projects.National Institutes of Health Grant 5 R01 DC00117National Institutes of Health Contract 2 P01 DC00361National Institutes of Health Grant 5 R01 DC00126National Institutes of Health Grant R01-DC00270U.S. Air Force - Office of Scientific Research Contract AFOSR-90-0200National Institutes of Health Grant R29-DC00625U.S. Navy - Office of Naval Research Grant N00014-88-K-0604U.S. Navy - Office of Naval Research Grant N00014-91-J-1454U.S. Navy - Office of Naval Research Grant N00014-92-J-1814U.S. Navy - Naval Training Systems Center Contract N61339-93-M-1213U.S. Navy - Naval Training Systems Center Contract N61339-93-C-0055U.S. Navy - Naval Training Systems Center Contract N61339-93-C-0083U.S. Navy - Office of Naval Research Grant N00014-92-J-4005U.S. Navy - Office of Naval Research Grant N00014-93-1-119

Chromosomal locations of genes that control wheat endosperm proteins

The nutritional valué and the unique dough-forming and baking properties of wheat flour largely depend on its protein contení and composition. Wheat endosperm has poor nutritional quality because it is deficient in certain essential amino acids (especially lysine), but because it is abundant, it is still the single most important source of protein for much of the world's population. Although wheat proteins have been extensively investigated by biochemists, geneticists, and breeders for well over two centuries, our knowledge about them is limited, compared with that of other important sources of dietary proteins, such as meat or milk. Onlyduringthepast 15yearshavesignificantadvances been madein the biochemical and genetic studies of individual wheat protein components. Most of the genetic studies have been on the aneuploid lines developed and made available by Sears (1953, 1954, 1959, 1966). Progress in aneuploid analysis of genes controlling proteins has generally depended on advances in protein fractionation and characterization. In many cases, however, these genetic analyses have been done on insufficiently characteri/ed groups of proteins, and this has resulted in some confusión

Aerospace medicine and biology: A continuing bibliography with indexes (supplement 391)

This bibliography lists 75 reports, articles, and other documents introduced into the NASA Scientific and Technical Information System during Aug. 1994. Subject coverage includes: aerospace medicine and physiology, life support systems and man/system technology, protective clothing, exobiology and extraterrestrial life, planetary biology, and flight crew behavior and performance