Filters: Date: "1979" Collection: "ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 |
Lindstrom, Gary E. | Alpha-beta pruning on evolving game trees | The alpha-beta strategy is a widely used method for economizing on the size of game trees. Heretofore, its application has been limited to depth-first tree growth in recursive search functions. However, many modern game players use retentive (i.e. coroutine-based) control to achieve greater attentio... | Alpha-beta pruning; Game trees | 1979 |
| 2 |
 |
Pulsipher, Dennis Carl | Application of adaptive noise cancellation to noise reduction in audio signals | The LMS adaptive noise cancellation algorithm has been applied to the removal of high-level white noise from audio signals. Simulations and actual acoustically recorded signals have been processed successfully, with excellent agreement between the results obtained from simulations and the results ob... | Noise cancellation; Noise reduction; White noise; LMS algorithm | 1979 |
| 3 |
 |
Riesenfeld, Richard F. | The application of total positivity to computer aided curve and surface design | Of particular importance in an interactive curve and surface design system is the interface to the user. The mathematical model employed in the system must be sufficiently flexible for interaction between designer and machine to converge to a satisfactory result. The mathematical theory of Total Pos... | interactive curves; total positivity | 1979 |
| 4 |
 |
Gardner, Reed M. | ATS Statement - Snowbird Workshop on Standardization of Spirometry | Biomedical Informatics | 1979 | |
| 5 |
 |
Symko, Orest George | Calibration of SQUID magnetometer for dilute alloy studies | A SQUID magnetometer used in the study of dilute magnetic alloys or other weak magnetic systems can be calibrated by using the nuclear paramagnetism of aluminum metal. This material is useful as a calibration standard since magnetic impurities such as Fe and Mn form no local moment. This calibration... | SQUID magnetometer | 1979 |
| 6 |
 |
Organick, Elliott I. | CASL - A language for automating the implementation of computer architectures | The computer Architecture Specification Language (CASL), described in this paper, is intended for use by computer architects CASL is a state machine description language especially useful for describing digital systems at the "register transfer" level and designed to meet the needs of the computer a... | Computer Architecture Specification Language | 1979 |
| 7 |
 |
Warner, Homer R. | The Characteristic Sequence for the Onset of Contraction in the Normal Human Left Ventricle | Biomedical Informatics | 1979 | |
| 8 |
 |
Gardner, Reed M. | Computerized Alert System Use in Clinical Medicine | Biomedical Informatics | 1979 | |
| 9 |
 |
Riesenfeld, Richard F. | Discrete B-splines and subdivision techniques in compter-aided geometric design and computer graphics | The relevant theory of discrete 5-sphnes with associated new algorithms is extended to provide a framework for understanding and implementing general subdivision schemes for nonuniform B-splines. The new derived polygon corresponding to an arbitrary refinement of the knot vector for an existing .B-... | 1979 | |
| 10 |
 |
Normann, Richard A. | Effects of background illumination on the photoresponses of red and green cones | 1. The photoresponses of light- and dark-adapted red and green cone photoreceptors were recorded intracellularly in the retina of the turtle, Pseduemys scripta elegans. Background illumination produced similar effects on both types of cones. 2. In response to the onset of a prolonged, steady backgro... | Turtles; Adaptation, Ocular; Retina; Signal Transmission | 1979 |
| 11 |
 |
Miller, Joel Steven; Epstein, Arthur J. | Elastic properties of (N(CH3)3H) (I) (TCNQ) | We present the results of a study of the temperature dependence of the Young's modulus and internal friction of (N(CH3 )3H)(I)(TCNQ). The Young's modulus was measured in a direction parallel to the TCNQ (tetracyanoquinodimethane) stacking axis using a vibrating reed technique. The results confirmed ... | Metal-like, Conductivity, Magnetic | 1979 |
| 12 |
 |
McDaniel, Susan | Estimates of the rate of illegal abortion and the effects of eliminating therapeutic abortion, Alberta 1973-74* | In the current controversy surrounding abortion, rates of illegal abortion, being difficult to ascertain, seldom inform the debate. We utilize a relatively new survey tool, the randomized response technique (RRT), to estimate rates of illegal abortion in Edmonton, Alberta. A comparison of results o... | Birth; health; RRT; fertility | 1979 |
| 13 |
|
McDaniel, Susan | Estimates of the rate of illegal abortion and the effects of eliminating therapeutic abortion, Alberta 1973-74* | In the current controversy surrounding abortion, rates of illegal abortion, being difficult to ascertain, seldom inform the debate. We utilize a relatively new survey tool, the randomized response technique (RRT), to estimate rates of illegal abortion in Edmonton, Alberta. A comparison of results o... | Birth; health; RRT; fertility | 1979 |
| 14 |
 |
Done, William John | Estimation of the parameters of an autoregressive process in the presence of additive white noise | Applications of linear prediction (LP) algorithms have been successful in modeling various physical processes. In the area of speech analysis this has resulted in the development of LP vocoders, devices used in digital speech communication systems. The LP algorithms used in speech and other areas ar... | Autoregressive process; Linear prediction algorithms; All-pole model | 1979 |
| 15 |
 |
Potts, Wayne K. | Gong method for capturing shorebirds and other ground-roosting species | In many shorebird studies it is necessary to capture adult birds. While shorebirds can often be trapped on the nest, capturing them away from the nest is usually very difficult and may require expensive equipment. After weeks of failure in our attempts to capture migrant and resident shorebirds in n... | Gong method; Shorebirds; Capture; Ground-roosting | 1979 |
| 16 |
 |
Frost, Richard L. | High resolution astronomical imaging through the turbulent atmosphere | This research is principally concerned with the digital reconstruction of star images observed with large ground-based telescopes, although the techniques developed here will have application to a broad class of reconstruction problems. Since the work of Labeyrie, the difficulty in producing accurat... | Astronomical imaging; Turbulent atmosphere; Digital reconstruction; Star images | 1979 |
| 17 |
 |
Pershing, David W. | Influence of fuel composition and flame temperature on the formation of thermal and fuel NOx in residual oil flames | A 900 kw model package boiler and a 20 kw laboratory tunnel furnace were used to study fuel and thermal NO, formation during heavy oil combustion. Package boiler results indicated that atomizer design, spray/ flow field interactions, and fuel composition were significant, dependent parameters. These... | Residual oil flames | 1979 |
| 18 |
 |
Pershing, David W.; Wendt, Jost O. L. | Investigation of first- and second-stage variables on control of NOx emissions using staged combustion in a pulverized coal wall-fired furnace | Recent tests on an EPA 1- to 1.5 x 106 Btu/hr pilot-scale pulverized coal furnace show that N0X emissions of 100 ppm to 150 ppm (zero percent 02) are achievable with the use of two-stage combustion. Comparable N0X emission levels were obtained with three different coal types fired in either the sing... | NOx; Carbon monoxide; Emissions | 1979 |
| 19 |
 |
Baehr, Wolfgang | Isolation and characterization of cGMP phosphodiesterase from bovine rod outer segments | A simple purification method has been developed for isolation of bovine cGMP phosphodiesterase from photoreceptor rod outer segments. The enzyme is peripherally membrane bound in its native state and is present in relatively high concentrations. In the bovine photoreceptors its molar ratio to rhodop... | Enzyme Activation; Macromolecular Substances; Trypsin/pharmacology | 1979 |
| 20 |
 |
Ailion, David Charles | NMR observations of molecular motions and Zeeman-quadrupole cross relaxation in 1,2- difluorotetrachloroethane | We report measurements of "F NMR relaxation times Tu Tlf, TID, and T2 in the plastic crystal CFCL2-CFCL2 . From the data near the melting point, we obtain the jump time for translational selfdiffusion. At lower temperatures, we observe on the cold side of the T, and Tif minima an unusual field depe... | NMR; Nuclear magnetic resonance; Order-disorder; Diffusion | 1979 |
| 21 |
 |
Boll, Steven F. | Noise suppression methods for robust speech processing (1 April 1979- 30 Sept. 1979) | Robust speech processing in practical operating environments requires effective environmental and processor noise suppression. This report describes the technical findings and accomplishments during this reporting period for the research program funded to develop real-time, compressed speech analysi... | Noise suppression; Signal contamination; Compressed speech analysis-synthesis algorithms | 1979 |
| 22 |
 |
Boll, Steven F.; Timothy, LaMar K. | Noise suppression methods for robust speech processing (1 Oct. 1978- 31 Mar. 1979) | Robust speech processing in practical operating environments requires effective environmental and processor noise suppression. This report describes the technical findings and accomplishments during this reporting period for the research program funded to develop real time, compressed speech analysi... | Noise suppression; Signal contamination; Compressed speech analysis-synthesis algorithms | 1979 |
| 23 |
 |
Ailion, David Charles | Nuclear magnetic resonance study of diffusion of bound and free fluorine interstitials in alkaline earth fluorides doped with trivalent impurities | When alkaline-earth fluorides are doped with trivalent impurities, interstitial fluorines are created to maintain charge neutrality. We have performed NMR dipolar-energy relaxation measurements over a wide temperature range and have observed the diffusion of both free and locally bound fluorine inte... | Diffusion; Motion; Crystals; NMR; Fluorine | 1979 |
| 24 |
 |
Miller, Joel Steven | Potential technology directions of molecular metals | In the past decade, anisotropic molecular conductors have been found which possess unusual electrical, optical, magnetic, and in some cases mechanical properties. Exploiting these properties for specific devices is inevitable, and a number of diverse applications of molecular metals have been repor... | Molecular metals | 1979 |
| 25 |
 |
Pershing, David W.; Wendt, Jost O. L. | Pulverized coal combustion: NOx formation mechanisms under fuel rich and staged combustion conditions | A 2 Kg/h pulverized fuel one dimensional flame combustor was used to determine time resolved NO profiles under fuel rich and staged combustion conditions. Seven solid fuels, including two coal chars, were investigated. Results show that at all fuel rich conditions NO is formed rapidly and then is ... | Flame; Composition; Reaction | 1979 |