Digital Commons Network^™

Accurate Experimental Determination Of Frequencies, Mode Shapes, And Dynamic Strains In Plate Valves Of Reciprocating Compressors, H. K. Reddy, J. F. Hamilton

International Compressor Engineering Conference

No abstract provided.

Computer Analysis Of Remotely Sensed Wheat Canopy Data, M. S. Sohel

LARS Symposia

The existing mathematical models of wheat growth or yield are based on air temperatures two meters above the ground from standard nationwide or worldwide meteorological networks, whereas temperatures obtained by thermal infrared scanners on satellites, such as the current NOAA series are surface radiative temperatures. These temperatures are correlated, but are not necessarily the same. In order to use satellite-derived surface radiative temperatures in wheat growth or yield models developed using standard air temperatures, the empirical relationship between these two temperatures needs to be established for the range of anticipated conditions.

Experiments were performed for bare soil and wheat canopies …

Ibis: A Geographic Information System Based On Digital Image Processing And Image Raster Datatype, Nevin A. Bryant, Albert L. Zobrist

LARS Symposia

There is a pressing need for geographic information systems which can manage spatially-referenced data, that perform certain types of spatially-oriented processing, and that are current and comprehensive. Polygon overlay and grid cell information systems access data for selected areas, but their data files are time consuming to generate and frequently costly to process. Updating of land use changes for such systems may become prohibitively expensive. In response to the present dilemma, a system is presented that makes use of digital image processing techniques to interface existing geocoded data sets and information management systems with thematic maps and remotely sensed imagery. …

Needed: A Better Approach To State And Federal Agencies, Chris J. Johannsen

LARS Symposia

Remote sensing projects in Missouri were conducted by several state agencies, the University of Missouri, the University of Kansas, and several federal agencies during the 60's. Many used aerial photography before that time period. During the 70's, remote sensing efforts continued among the participants but with better communication and coordination.

The Missouri approach is not unusual. Basically we have been attempting to teach state and federal agency personnel how to use aerial photography and space images to assist them with their work. Research efforts have been closely tied to the needs of the user with actual involvement in the research. …

Automated Ground Coordinate Sampling, George E. Lukes

LARS Symposia

Analytical techniques have been designed, tested and implemented that provide automated procedures for referencing terrain locations defined by ground coordinates in digital images. Based on principles of analytical photogrammetry, these techniques termed projective sampling, rigorously account for camera position and orientation Corrections for lens distortion, atmospheric refraction, film deformation and other sources of systematic distortion can be incorporated. A ground coordinate data base, an image digitizer which also serves as a comparator and well-defined imaging geometry, such as that of frame cameras, are required.

The Automated Recognition Of Urban Development From Landsat Images, P. Carter, M. Jackson

LARS Symposia

The problems and progress made in the development of automated methods for the recognition and extraction of urban land use features from the LANDSAT digital data of the UK are described. In the data examined so far density slicing in one waveband appears to be almost as effective as multiwaveband classification in selecting the urban areas. While absolute boundaries may be difficult to delineate, new developments may be recognisable which would be adequate for monitoring needs. It appears important to include the effects of seasonal change and make use of texural analysis in the classification process.

Thermal Sensing Of The Chihuahuan: Feasibility Study With The Noaa-4, William R. Hazard

LARS Symposia

Multiband and multistage scanning were used to locate broad promising agricultural sites in the Texas portion of the Chihuahuan Desert followed by a detailed study of ground temperature variances in these site locations. Ground truth obtained from thermal probes, and thermal imagery from a helicopter borne scanner were correlated with imagery VHRR scanning radiometer aboard the NOAA-4 satellite. Temperature estimates from the satellite were calculated from the analog tapes and image enhancement and density slicing of the satellite imagery were utilized.

Soil temperatures at three locations within the test sites were acquired with an automatic data logging system. The data …

Making Processed Meat Products Without A Smokehouse, H. R. Johnson

Historical Documents of the Purdue Cooperative Extension Service Archive

No abstract provided.

Refrigerant Muffler Analysis, T. C. Hundley

International Compressor Engineering Conference

No abstract provided.

Sequential Classification And Clustering Methods Applied To Digitized Photographs, Chapman P. Gleason

LARS Symposia

This paper presents a system for object detection and counting from transparencies digitized using a scanning microdensitometer. Classification and clustering methods are applied sequentially to digitized transparencies of an orange tree and a low altitude color infrared aerial photograph of a citrus orange. The objective is to count oranges on the digitized ground transparency and to count fruit trees on the digitized infrared aerial photograph. This general flow can be applied to any type of spectral data for object detection and counting.

Analysis Of The Working-Cycle Of Single Stage Refrigeration-Compressors Using Digital Computers, W. Rottger, H. Kruse

International Compressor Engineering Conference

No abstract provided.

A Mechanism Of Motor Failure, D. E. Crawford

International Compressor Engineering Conference

No abstract provided.

A Comparison Of Computer Simulation Techniques Of Gas Flow In Multiple Single-Stage And Two-Stage Reciprocating Compressor Systems, A. S. Ocer

International Compressor Engineering Conference

No abstract provided.

A Study Of Boundary Conditions Encountered In Reciprocating Compressor Systems, J.F. T. Maclaren, A. B. Tramschek, O. F. Pastrana

International Compressor Engineering Conference

No abstract provided.

Verifying The Reliability Of Hermetically Sealed Compressors During The Development, A. Lorenz, D. Rochhausen

International Compressor Engineering Conference

No abstract provided.

Development Of Large Refrigerant Compressors, A. Lundberg

International Compressor Engineering Conference

No abstract provided.

Effect Of Circuit Parameter Changes On Motor Protector Interrupting Capability, L. E. Cooper

International Compressor Engineering Conference

No abstract provided.

Compressor Start Tests Following R-22 Migration To The Oil, W. D. Cooper

International Compressor Engineering Conference

No abstract provided.

Detailed Modeling And Computer Simulation Of Reciprocating Refrigeration Compressors, C. C. Hiller, L. R. Glicksman

International Compressor Engineering Conference

No abstract provided.

Conceptual Design Of A Better Heat Pump Compressor For Northern Climates, D. Squarer, F. Sisk, S. Veyo

International Compressor Engineering Conference

No abstract provided.

Impact Fatigue Of Valve Steel, M. Svenzon

International Compressor Engineering Conference

No abstract provided.

Improved Efficiency Compressors For Household Refrigerators And Freezers, G. H. Schroeder

International Compressor Engineering Conference

No abstract provided.

High Efficiency Reciprocating Compressors, D. R. Riffe

International Compressor Engineering Conference

No abstract provided.

Analytic And Experimental Techniques For Evaluating Compressor Performance Losses, J. J. Jacobs

International Compressor Engineering Conference

No abstract provided.

Notch Fatigue Behavior Of Some Potential Compressor Valve Materials, D. N. Lal, J. S. Laub

International Compressor Engineering Conference

No abstract provided.

Compressor Capacity Control Via Early Suction-Valve Closing, C. C. Hiller, L. R. Glicksman

International Compressor Engineering Conference

No abstract provided.

Fatigue And Fracture Mechanics Properties Of Valve Steels, R. Dusil, B. Appell

International Compressor Engineering Conference

No abstract provided.

Constant Pressure Expansion Valve Application Notes, R. F. Smith

International Compressor Engineering Conference

No abstract provided.

Energy Consumption In Hermetic Refrigerator Compressors, R. W. Shaffer, W. D. Lee

International Compressor Engineering Conference

No abstract provided.

Simulation Of The Dynamic Performance Of A Variable Width Cantilever Suction Valve Using Computer Graphics, G. W. Gatecliff, H. S. Henry

International Compressor Engineering Conference

No abstract provided.