Digital Commons Network^™

Computer Analysis Of X-Band Radar Data, D. J. Knowlton, R. M. Hoffer

LARS Technical Reports

Dual polarized X-Band Synthetic Aperture Radar (SAR) data were obtained for a test site in South Carolina containing a variety of forest and agricultural cover types, as well as water and urban areas. The optically correlated images were digitized with a scanning microdensitometer using a 40 µm aperture. Digital registration of the two polarizations was more difficult than anticipated due to geometric variations in the imagery. However, a successful registration was obtained, and a "degraded" 30 m resolution data set was generated in addition to the original 15 m resolution data set.

Computer analysis indicated a statistically significant look-angle effect …

An Investigation Of Contract Claims For Indiana Highway Construction Projects, Karen Denise Berg

JTRP Technical Reports

No abstract provided.

Priority Setting Of Highway Improvement Projects, Mark Douglas Harness, Kumares C. Sinha

JTRP Technical Reports

No abstract provided.

Design Of Compacted Clay Embankments For Improved Stability And Settlement Performance : Interim Report, Martin J. Goodman, Jean-Lou Chameau, C. W. Lovell

JTRP Technical Reports

No abstract provided.

Indiana State Highway Reciprocity Study, Kumares C. Sinha, Graham S. Toft, Virgil L. Anderson, Essam Abdel-Aziz Sharaf, Kang Hu

JTRP Technical Reports

No abstract provided.

Feature Selection Methodologies Using Simulated Thematic Mapper Data, M. E. Dean, R. M. Hoffer

LARS Technical Reports

This study investigated computer classification performances for forest and other cover types using Thematic Mapper Simulator (TMS) data collected by NASA's NSOOl scanner. Specifically, results based on the use of a common feature selection measure -- transformed divergence (TD) -- were compared to those based on a principal component transformation for the purpose of evaluating the capabilities of each technique to define: (1) the optimum dimensionality for data sets of this type, and (2) the relative significance of the various wavelength bands with respect to their ability to discriminate among the various cover classes. Expected classification performances as indicated by …

1983 Directory Of Indiana State, County, City And Town Officials Responsible For Road And Street Work, Herpicc

Indiana Local Technical Assistance Program (LTAP) Directory

Contact information for agency officials and employees responsible for Indiana’s local road infrastructure.

A Training Guide For Pavement Maintenance Personnel, Herpicc

Indiana Local Technical Assistance Program (LTAP) Publications

These Guidelines have been prepared as a reference for highway maintenance personnel responsible for patching pavements and are intended as a reference for the patching crew. The Guidelines are not intended to be a detailed reference describing the successes and failures of techniques and materials used by various agencies to construct pavement patches. The patching techniques and materials presented in these Guidelines are those which have been developed by research and successfully used by various agencies to patch highway pavements under various climatic or weather conditions.

Checklist For Preparing Basic Motor Grader (29,000 Lbs. Class) Specifications, Herpicc

Indiana Local Technical Assistance Program (LTAP) Publications

This checklist provides various items to be considered when seeking bids for motor graders.

Peopleware: The Most Critical Component Of A Successful Technology Transfer Program, S. M. Davis, L. A. Bartolucci, C. R. Valenzuela

LARS Technical Reports

In the final report of the Independent Commission on International Development Issues, entitled "North-South: A Programme for Survival," it is clearly stated that the search for a solution to the problem of the widening economic disparity between the North and South, between the developed and less developed countries, should "focus not on machines but on people." Historically, the experiences of the advanced countries have demonstrated the importance of skilled human resources in the development process. It has been proven that "natural resource endowment is a necessary, but not a sufficient requirement for progress." The slow rate of development in over …

Simple Methods For Determining The Accuracy Of Tumor Blood Flow Measurements Using Radioactive Microspheres In Rats, Rosanna C. Chan, Charles F. Babbs, Richard J. Vetter

Weldon School of Biomedical Engineering Faculty Publications

Two simple methods are presented that allow positive identification of the accuracy and precision of the microsphere technique and a quick verification of sphere entrapment in tumor vessels. A known flow of Ringer's solution from a motor-driven syringe is perfused through the rat's isolated systemic circulation from left ventricle to right atrium and collected in a funnel. Using this preparation, total blood flow in rats measured with radioactive microspheres injected into the left ventricle was 97% of actual flow. The coefficient of variation (standard deviation/mean) of the microsphere measurements was 0.22. In the same preparation, non-entrapment of microspheres in subcutaneous …

Improved Oxygen Delivery During Cardiopulmonary Resuscitation With Interposed Abdominal Compressions, William D. Voorhees, Mark J. Niebauer, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

The ability of a new modification of cardiopulmonary resuscitation (CPR) to deliver oxygen to tissues was evaluated. The method utilizes standard CPR techniques with the addition of manual abdominal compressions (100 mm Hg) interposed between chest compressions, and is termed interposed abdominal compression-CPR (IAC-CPR). Oxygen delivery was measured by a spirometer in a closed circuit designed to permit positive-pressure ventilation synchronized with mechanical chest compression. Ventricular fibrillation was induced electrically in 10 anesthetized dogs. In each dog, trials of IAC-CPR and standard CPR were alternated every five minutes during a 30-minute period. Arterial and central venous blood pressures, oxygen consumption, …

Relationship Of Blood Pressure And Flow During Cpr To Chest Compression Amplitude: Evidence For An Effective Compression Threshold, Charles F. Babbs, W D. Voorhees, K R. Fitzgerald, H R. Holmes, L A. Geddes

Weldon School of Biomedical Engineering Faculty Publications

This study was conducted to investigate the importance of the depth of chest compression in producing effective cardiopulmonary resuscitation (CPR) in animals, as indicated by cardiac output and mean arterial blood pressure. Cardiac output was measured by a modified indicator dilution technique in 8 anesthetized dogs, 6 to 12 kg body weight, during repeated 2-minute episodes of electrically induced ventricular fibrillation and CPR provided by a mechanical chest compressor and ventilator (Thumper^®). Chest compression exceeding a threshold value (x₀) between 1.5 and 3.0 cm was required in each animal to produce measurable cardiac output. In particular, …

The Uniform Soybean Tests: Northern States 1983, J. R. Wilcox

Uniform Soybean Tests Northern Region

No abstract provided.

An Assessment Of Choice As A Tool For Selection, John P. Schmitt, E. Stewart Saunders

Libraries Research Publications

Reviews in Choice for 310 books were analyzed for how highly they were recommended for college libraries. Each book was given a rating on a scale from 1 to 5 to reflect this recommendation. Circulation records for each book covering a 2 to 3.5 year span in the Purdue General Library were also obtained, and a correlation was used to establish a relation between level of recommendation and the use of the book. A Spearman rank order correlation of .137 (p = .008) was found, indicating only a weak relationship between the levels of recommendation and use. When the sample …

Small Systems, Dirk Siefkes

Department of Computer Science Technical Reports

No abstract provided.

A Model For Coherent Distributed Systems, Robert L. Brown, Peter J. Denning, Walter F. Tichy

Department of Computer Science Technical Reports

No abstract provided.

Back Matter

The Writing Center Journal

No abstract provided.

Bolivian Digital Geographic Information System, L. A. Bartolucci, T. L. Philips, C. R. Valenzuela

LARS Technical Reports

Since the advent of the first Landsat satellite, Bolivia has successfully obtained information related to its natural resources. It was soon realized that in order to be able to handle the enormous amounts of data that were being generated, it was necessary to have a system that would readily store, retrieve and manipulate these data. This need was also recognized by the Inter-American Development Bank (IDB), which provided the funds through an agreement for technical cooperation ATN/SF-1812-BO.

Although there are available a number of Geographic Information Systems (GIS) at various stages of development ,6 Bolivia was interested primarily in a …

Assessing Attitudes Towards The Writing Center, Malcolm Hayward

The Writing Center Journal

No abstract provided.

When Re-Writing Succeeds: An Analysis Of Student Revisions, Byron Stay

The Writing Center Journal

No abstract provided.

Front Matter

The Writing Center Journal

No abstract provided.

Front Matter

The Writing Center Journal

No abstract provided.

Should Distributed Systems Be Hidden?, Peter J. Denning, Robert L. Brown

Department of Computer Science Technical Reports

No abstract provided.

Signature Protocols For Rsa And Other Public- Key Cryptosystems, Dorothy E. Denning

Department of Computer Science Technical Reports

No abstract provided.

Traffic Control For Low-Volume Rural (Lvr) Roads, Bob L. Smith

Purdue Road School

No abstract provided.

Preface, Purdue Road School

Purdue Road School

No abstract provided.

Road Revenue Sources For State And Local Government, Art Graham

Purdue Road School

No abstract provided.

Enhancing Highway Safety Through Engineering Management, Harold L. Michael

Purdue Road School

No abstract provided.

Is Utopia Around The Corner?, Gene K. Hallock

Purdue Road School

No abstract provided.