UScholar Works
 
Filters: Date: "1979" School Or College: "College of Engineering" Collection: "ir_uspace"
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CreatorTitleDescriptionSubjectDate
1 Lindstrom, Gary E.Alpha-beta pruning on evolving game treesThe 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 trees1979
2 Pulsipher, Dennis CarlApplication of adaptive noise cancellation to noise reduction in audio signalsThe 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 algorithm1979
3 Riesenfeld, Richard F.The application of total positivity to computer aided curve and surface designOf 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 positivity1979
4 Organick, Elliott I.CASL - A language for automating the implementation of computer architecturesThe 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 Language1979
5 Riesenfeld, Richard F.Discrete B-splines and subdivision techniques in compter-aided geometric design and computer graphicsThe 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
6 Done, William JohnEstimation of the parameters of an autoregressive process in the presence of additive white noiseApplications 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 model1979
7 Frost, Richard L.High resolution astronomical imaging through the turbulent atmosphereThis 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 images1979
8 Pershing, David W.Influence of fuel composition and flame temperature on the formation of thermal and fuel NOx in residual oil flamesA 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 flames1979
9 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 furnaceRecent 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; Emissions1979
10 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 algorithms1979
11 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 algorithms1979
12 Pershing, David W.; Wendt, Jost O. L.Pulverized coal combustion: NOx formation mechanisms under fuel rich and staged combustion conditionsA 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; Reaction1979
13 Lindstrom, Gary E.Referencing and retention in block-structured coroutinesThe combination of coroutines with recursive procedures is characteristic of many modern higher-level languages offering advanced control structures (e.g. SIMULA-67, SL5, Interlisp, etc.). We say a language has block-structured coroutines (BSCRs) when static nesting considerations govern the usage o...Block-structured; BSCR1979
14 Boll, Steven F.Suppression of acoustic noise in speech using two microphone adaptive noise cancellationAcoustic noise with energy greater or equal to the speech is suppressed by filtering a separately recorded correlated noise signal and subtracting it from the speech waveform. This approach was investigated to determine the degree of noise suppression possible using an external correlated input. The...Suppression; acoustic noise; adaptive noise cancellation1979
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