Digital Commons Network^™

Parallel Algorithms For Isolated And Connected Word Recognition, Mark Alan Yoder, Leah H. Jamieson

Department of Electrical and Computer Engineering Technical Reports

For years researchers have worked toward finding a way to allow people to talk to machines in the same manner a person communicates to another person. This verbal man to machine interface, called speech recognition, can be grouped into three types: isolated word recognition, connected word recognition, and continuous speech recognition. Isolated word recognizers recognize single words with distinctive pauses before and after them. Continuous speech recognizers recognize speech spoken as one person speaks to another, continuously without pauses. Connected word recognition is an extension of isolated word recognition which recognizes groups of words spoken continuously. A group of words …

The Tilde Project, Douglas E. Comer, John T. Korb, Thomas Murtagh, Walter Tichy

Department of Computer Science Technical Reports

No abstract provided.

Dynamic Systolization For Developing Multiprocessor Supercomputers, Kai Hwang, Zhiwei Xu

Department of Electrical and Computer Engineering Technical Reports

A dynamic network approach is introduced for developing reconfigurable, systolic arrays or wavefront processors; This allows one to design very powerful and flexible processors to be used in a general-purpose, reconfigurable, and fault-tolerant, multiprocessor computer system. The concepts of macro-dataflow and multitasking can be integrated to handle variable-resolution granularities in computationally intensive algorithms. A multiprocessor architecture, Remps, is proposed based on these design methodologies. The Remps architecture is generalized from the Cedar, HEP, Cray X- MP, Trac, NYU ultracomputer, S-l, Pumps, Chip, and SAM projects. Our goal is to provide a multiprocessor research model for developing design methodologies, multiprocessing and …

An Overview Of The Dash Intelligent Terminal Project, John T. Korb

Department of Computer Science Technical Reports

No abstract provided.

A Name Resolution Model For Distributed Systems, Douglas E. Comer, Larry J. Peterson

Department of Computer Science Technical Reports

No abstract provided.

Evolution Plots Of Software Metrics From A Program Construction Experiment (Summer-83) (Thesis), Andrew Shenq-Yen Want

Department of Computer Science Technical Reports

No abstract provided.

Advanced Industrial Robot Control Systems, Richard P. Paul, J. Y. S. Luh, S. Y. Nof, Y. Hayward

Department of Electrical and Computer Engineering Technical Reports

The objective of this research is to extend the flexibility a,hd . 'usefulness. of current industrial robots by the integration of robot motion control directly into a. general purpose programming language, the development of force feedback and its integration into the language, the formulation of a high-level task description language RTM, and by the investigation of both off-line collision-free path planning and on-line collision avoidance.

Analysis And Implementation Of Median Type Filters, J. P. Fitch, E. J. Coyle, N. C. Gallagher

Department of Electrical and Computer Engineering Technical Reports

Median filters are a special class of ranked order filters used for smoothing signals. These filters have achieved- success in speech processing, image processing, and other impulsive noise environments where linear filters have proven inadequate. Although the implementation of a median filter requires only a simple digital operation, its properties are not easily analyzed. Even so, a number of properties have been exhibited in the literature. In this thesis, a new tool, known as threshold decomposition is introduced for the analysis and implementation of median type filters. This decomposition of multi-level signals into sets of binary signals has led to …

Report Of The Workshop On Supercomputers And Symbolic Computation, Dennis S. Arnon

Department of Computer Science Technical Reports

No abstract provided.

Modeling A Token Ring With Non-Exhaustive Service, André B. Bondi

Department of Computer Science Technical Reports

No abstract provided.

Modeling The Effect Of Local Area Network Contention On The Performance Of Host Computers, André B. Bondi

Department of Computer Science Technical Reports

No abstract provided.

Towards A Distributed File System, Walter F. Tichy, Zuwang Ruan

Department of Computer Science Technical Reports

No abstract provided.

The One Dimensional Signal Processing Laboratory. Hardware And Command Documentation, Jon C. Dattorro, John C. Stapleton, Steven C. Bass

Department of Electrical and Computer Engineering Technical Reports

No abstract provided.

Final Report: National Science Foundation Remote Sensing Workshop. Held At Purdue University February 28, 29, March 1, 1984, D. A. Landgrebe, P. H. Swain, L. F. Silva

Department of Electrical and Computer Engineering Technical Reports

It was the purpose of this workshop to examine the potential for further advancement of the science of remote sensing, and to define directions which the Engineering aspects of remote sensing research could not take in order to maximize the scientific and technological return.

Pothole Repair In Pennsylvania, David A. Anderson, H Randolph Thomas

Purdue Road School

No abstract provided.

Communications And Public Relations - Our Dilemma, Melvin B. Meyer

Purdue Road School

No abstract provided.

Simple On The Chip, D. Gannon, J. Panetta

Department of Computer Science Technical Reports

No abstract provided.

Analysis Of Hermetic Rolling Piston Type Compressor Noise, And Countermeasures, K. Sano, K. Mitsui

International Compressor Engineering Conference

No abstract provided.

Estimation Of Modulation Transfer Function Of Landsat-4 Sensors From Measured Imagery, C. D. Mcgillem, P. E. Anuta, K. B. Yu

LARS Technical Reports

Satellite-based multispectral imaging systems have been in operation since 1972 and the latest in the Landsat series of sensors was launched in July 1982. In order to verify that the Landsat-4 Thematic Mapper (TM) and Multispectral Scanner Systems (MSS) sensors are operating within specifications, it is necessary to estimate the system parameters by analysis of the measured data. One parameter of interest is the sensor modulation transfer function (MTF) or the point spread function (PSF) which determines the spatial resolution of the system.

This paper discusses two methods to determine the actual overall resolutions after launch. The problem is formulated …

Performance Analysis Of A Sliding -Vane Rotary Compressor For A Household Refrigerator/Freezer, J. D. Tromblee

International Compressor Engineering Conference

No abstract provided.

Preclinical Studies Of Abdominal Counterpulsation In Cpr, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

Abdominal counterpulsation added to standard cardiopulmonary resuscitation improves blood flow in animal models when compared to chest compressions alone. Similar effects can be demonstrated in analog and digital computer models of the circulation. The technique generates both central aortic and central venous pressure pulses, and successful application of the method depends on maximizing the former and minimizing the latter. Proper technique is important in order to generate the largest possible arteriovenous pressure difference.

Abnormal Response Of Tumor Vasculature To Vasoactive Drugs, Rosanna C. Chan, Charles F. Babbs, Richard J. Vetter, Carlton H. Lamar

Weldon School of Biomedical Engineering Faculty Publications

The effects of the vasoconstrictor, phenylephrine, and the vasodilator, hydralazine, on blood flow to tumor were studied and compared to those on blood flow to normal tissues in vivo. Regional blood flow and cardiac output were measured with the use of radioactive microspheres in 150- to 250 g inbred Harlan F344 rats bearing subcutaneous nodules of two types of transplantable carcinoma ("hard" and "soft") with microscopically different vascular patterns. Three groups of rats were treated with hydralazine, saline, or phenylephrine, and regional blood flow was determined at the time of maximum blood pressure response. Results were correlated with quantitative morphometric …

Cardiac, Thoracic, And Abdominal Pump Mechanisms In Cardiopulmonary Resuscitation: Studies In An Electrical Model Of The Circulation, Charles F. Babbs, Christopher Weaver, Sandra H. Ralston, Leslie A. Geddes

Weldon School of Biomedical Engineering Faculty Publications

To investigate alternative mechanisms generating artificial circulation during cardiopulmonary resuscitation (CPR), an electrical model of the circulation was developed. Heart and blood vessels were modeled as resistive-capacitive networks; pressures in the chest, abdomen, and vascular compartments as voltages; blood flow as electric current; blood inertia as inductance; and the cardiac and venous valves as diodes. External pressurization of thoracic and abdominal vessels, as would occur in CPR, was simulated by application of half-sinusoidal voltage pulses. Three modes of creating artificial circulation were studied: cardiac pump (CP), in which the atria and ventricles of the model were pressurized simultaneously; thoracic pump …

Intrapulmonary Epinephrine During Prolonged Cardipulmonary Resuscitation: Improved Regional Blood Flow And Resuscitation In Dogs, Sandra H. Ralston, William D. Voorhees, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

Blood flow to vital organs was measured at five-minute intervals during 20 minutes of cardiopulmonary resuscitation (CPR) and ventricular fibrillation in two groups of anesthetized dogs (n = 15 per group). The relationship between organ blood flow and restoration of circulation after 20 minutes was assessed with no additional treatment in Group I and with intrapulmonary epinephrine in Group II. Cardiac output and organ blood flow did not vary significantly in Group I. In Group II, intrapulmonary epinephrine significantly improved blood flow to the myocardium, the brain, and the adrenal glands. A mean myocardial blood flow of less than 0.13 …

Compressor Modeling Technique For Realistic And Broad Range Simulation , A. Patani, U. Bonne

International Compressor Engineering Conference

No abstract provided.

Efficacy And Safety Of The Reciprocal Pulse Defibrillator Current Waveform, M J. Niebauer, Charles F. Babbs, L A. Geddes, J D. Bourland

Weldon School of Biomedical Engineering Faculty Publications

The efficacy and safety of a new defibrillating current waveform, consisting of a low-tilt 5 ms trapezoidal pulse followed closely by a second identical pulse of opposite polarity, was tested m seven isolated, perfused, working canine hearts suspended in an isoresistive, isosmotic shock bath at 37 oC. The efficacy and safety of the reciprocal pulse was compared with a single 5 ms pulse, a single 10 ms pulse, and a dual (unidirectional) 5 ms pulse waveform. The mean threshold average current densities for the 5 ms single pulse, 10 ms single pulse, dual 5 ms pulse, and reciprocal pulse (absolute …

A Digital Reciprocating Compressor Simulation Program Including Suction And Discharge Piping , P. J. Singh

International Compressor Engineering Conference

No abstract provided.

The Study Of Rolling Piston, Rotary Compressor Dynamic Behavior When Stopping To Reduce Noise And Vibration Level , N. Ishii, K. Imaichi, S. Muramatsu, M. Fukushima, H. Matsunaga

International Compressor Engineering Conference

No abstract provided.

Characterization Of Solid Contaminants In Air Conditioning And Heat Pump Residential Split Systems And Their Effect On Compressor Reliability, S. G. Sundaresan

International Compressor Engineering Conference

No abstract provided.

Records For Inventory Control, Communication, And Scheduling, David Bache

Historical Documents of the Purdue Cooperative Extension Service Archive

No abstract provided.