Digital Commons Network^™

Components On Blade Excited Rigid Body Vibrations Of Rotary Vane Compressors, V. Yee, W. Soedel

International Compressor Engineering Conference

No abstract provided.

Transient Valve Plate Vibrations, H. Joergensen

International Compressor Engineering Conference

No abstract provided.

Modeling And Simulation Of Rotary Screw Compressors, D. S. Szarkowicz, M. A. Firnhaber

International Compressor Engineering Conference

No abstract provided.

The Dynamic Behavior Of Valve Reeds In Reciprocating Gas Compressors - Analytical Study, S. Papastergiou, J. Brown, J. F. T. Maclaren

International Compressor Engineering Conference

No abstract provided.

Analytical Research Into Throttling Control Methods Of Liquid -Cooled Rotary Screw Air Compressors, To The Purport Of Minimizing The Energy Systems, M. Airila

International Compressor Engineering Conference

No abstract provided.

Similarity Considerations For Pressure Pulsations In The Piping Of Positive Displacement Compressors, L. Boswirth

International Compressor Engineering Conference

No abstract provided.

A Method Of Measuring The Impact Velocity Of Flapper Valves, J. O. Sprang, J. O. Nilsson, G. Persson

International Compressor Engineering Conference

No abstract provided.

Performance Of Automatic Compressor Valves, J. Brown, R. Davidson, J. Fleming

International Compressor Engineering Conference

No abstract provided.

Inventory Estimation On The Massively Parallel Processor, Peter D. Argentiero, James P. Strong, David W. Koch

LARS Symposia

This paper describes algorithms for efficiently computing inventory estimates from satellite based images. The algorithms incorporate a one dimensional feature extraction which optimizes the pairwise sum of Fisher distances. Biases are eliminated with a premultiplication by the inverse of the analytically derived error matrix. The technique is demonstrated with a numerical example using statistics obtained from an actual LANDSAT scene.

Attention was given to implementation of the Massively Parallel processor (MPP). A timing analysis demonstrates that the inventory estimation can be performed an order of magnitude faster on the MPP than on a conventional serial machine.

A Model Of Plant Canopy Polarization Response, V. C. Vanderbllt

LARS Technical Reports

Sensors to remotely measure the linear solarization of ground scenes have been proposed for the Multispectral Resource Sampler (MRS), a satellite sensor system proposed to compliment the Thematic Mapper. At present justification for a Sensor on MRS to measure scene polarization is limited. This paper discusses a model for the amount of linearly polarized light reflected by the shiny leaves of such crops as wheat, corn, and sorghum. The theory demonstrates that, potentially, measurements of the linearly polarized light from a crop canopy may be used as an additional feature to discriminate between crops. Examination of the model suggests that, …

Calculation Of Probability Of Correct Classification For Two-Class Gaussian Classifiers With Arbitrary Hyperquadratic Decision Boundaries, Arthur G. Wacker, Talaat S. El-Sheikh

LARS Symposia

In this paper a technique is developed in order to numerically calculate the hyper-volume under a multidimensional Gaussian function over a region of the space defined by an arbitrary hyper-quadratic boundary. The technique is a modified version of the technique developed by Fukunaga and rile. The latter technique can be used only if the hyper-quadratic boundary results from the intersection of the Gaussian function, under which the hyper-volume is being calculated, with some other Gaussian function as opposed to an arbitrary hyper-quadratic boundary.

A practical problem in which the hyper-volume calculation mentioned above is of interest arises in statistical pattern …

Variability Of Reflectance Measurements Due To The Interaction Of Row Azimuth And Solar Illuminati On Angle, J. C. Kollenkark, V. C. Vanderbilt, C. S. T. Daughtry

LARS Symposia

Pronounced effects on the reflective response of a crop canopy due to changes in solar azimuth and row azimuth angle have been noted on soybeans planted in wide rows. Understanding the interaction between row azimuth and illumination direction on the crop canopy spectral response is necessary in order to utilize effectively the spectral data collected on row crops.

The objective of this experiment was to determine the effects of rows and row direction on the reflective response of a soybean canopy as a function of solar azimuth and zenith angles. Data were acquired over eleven plots in 1979. One plot …

Radar Image Preprocessing, Victor S. Frost, Josephine A. Stiles, Julian C. Holtzman, D. N. Held

LARS Symposia

Standard image processing techniques are not applicable to radar images because of the coherent nature of the sensor. Therefore there is a need to develop preprocessing techniques for radar images which will then allow these standard methods to be applied. A random field model for radar image data is developed. This model describes the image data as the result of a multiplicative-convolved process. Standard techniques, those based on additive noise and homomorphic processing are not directly applicable to this class of sensor data. Therefore, a minimum mean square error (MMSE) filter was designed to treat this class of sensor data. …

Digitization And Processing By Minicomputer Of Large Regional Geological Maps And Ancillary Data On Mineral Resources, Andrea G. Fabbri

LARS Symposia

A systematic procedure is described for the preparation and digitization of geological maps, various geophysical and geomorphological maps, and the distribution pattern of mineral occurrences in a Precambrian terrain area in Northwestern Manitoba, Canada.

The complete task consisting of input preparation, digitization, preprocessing and processing, can be carried out by one person, using a minicomputer equipped with a small graphic tablet digitizer, several display \&vices, and specially developed Fortran software.

Map patterns of boundaries are transformed into digital images which are mosaics of subimages in registration with each other. From the binary images of boundaries, the pixels occupying the areas …

Mathematics In The Forest, Douglas Knudson

Historical Documents of the Purdue Cooperative Extension Service Archive

No abstract provided.

Personal Key, Group Keys, And Master Keys, Dorothy E. Denning, Fred B. Schneider

Department of Computer Science Technical Reports

No abstract provided.

Operational Analysis - An Aid To Interpretation Of Measurement Data, Herb Schwetman

Department of Computer Science Technical Reports

No abstract provided.

Modeling Performance Of The B6700: A Case Study, Herb Schwetman

Department of Computer Science Technical Reports

No abstract provided.

Program Restructuring In Segmenting Environments, Jehan-François Päris

Department of Computer Science Technical Reports

No abstract provided.

A Software Science Analysis Of Cobol Programs, V. Y. Shen, Herbert E. Dunsmore

Department of Computer Science Technical Reports

No abstract provided.

A Combinatorial Problem Concerning Processor Interconnection Networks, Michael J. O'Donnell, Carl H. Smith

Department of Computer Science Technical Reports

No abstract provided.

Validating System Models: A Case Study, H. D. Schwetman

Department of Computer Science Technical Reports

No abstract provided.

Effort Minimization Based On Hierarchical Modularization, S. D. Conte

Department of Computer Science Technical Reports

No abstract provided.

Automatic, Remote Status Lights For Vax Unix, Douglas E. Comer, Robert L. Brown

Department of Computer Science Technical Reports

No abstract provided.

On The Effectiveness Of Iteration For The Galerkin Method Equations, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

The Effects Of Added Softening Agents Upon The Behavior Of Cold Recycled Asphalt Mixtures : Interim Report, Akio Iida

JTRP Technical Reports

No abstract provided.

Field Research On The Spectral Properties Of Crops And Soils, M. E. Bauer, L. L. Biehl, B. F. Robinson

LARS Technical Reports

This report describes the experiment design, data acquisition and preprocessing, data base management, analysis results and development of instrumentation for the AgRISTARS Supporting Research Project, Field Research task. It reports results of several investigations on the spectral reflectance of corn and soybean canopies as influenced by cultural practices, development stage and nitrogen nutrition. Results of analyses of the spectral properties of crop canopies as a function of canopy geometry, row orientation, sensor view angle and solar illumination angle are presented. The objectives, experiment designs and data acquired in 1980 for field research experiments are described. The development and performance characteristics …

An Assessment Of Landsat Data Acquisition History On Identification And Area Estimation Of Corn And Soybeans, Marilyn M. Hixson, Marvin E. Bauer, Donna K. Scholz

LARS Technical Reports

During the past decade, numerous studies have demonstrated the potential of satellite remote sensing for providing accurate and timely crop area information. This study assessed the impact of Landsat data acquisition history on classification and area estimation accuracy of corn and soybeans.

Multitemporally registered Landsat MSS data from four acquisitions during the 1978 growing season were used in classification of eight sample segments in the U.S. Corn Belt. The results illustrate the importance of selecting Landsat acquisitions based on spectral differences in crops at certain growth stages.

Alternative Parameterizations Of Product-Form Queueing Networks, James P. Bouhana

Department of Computer Science Technical Reports

No abstract provided.

Measuring And Calculating Queue Length Distributions, Jeffrey P. Buzen, Peter J. Denning

Department of Computer Science Technical Reports

No abstract provided.