Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Purdue University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 19411 - 19440 of 21926

Full-Text Articles in Entire DC Network

Real-Time Helicopter Flight Control Test Bed, Toby J. Pallett, Brad J. Wolfert, Shaheen Ahmad Jul 1991

Real-Time Helicopter Flight Control Test Bed, Toby J. Pallett, Brad J. Wolfert, Shaheen Ahmad

Department of Electrical and Computer Engineering Technical Reports

The goal of this paper is to describe a test bed for real-time helicopter flight control systems and some initial control experiments utilizing the test bed. The developed test bed consists of an off-the-shelf radio control helicopter which has been modified so that it can be computer controlled. The helicopter is mounted on a sensor equipped test fixture which provides information on the helicopter's position and attitude while allowing it to move freely within some limited area. In this paper we describe the hardware and software developed to allow real-time helicopter flight control and plant identification. In addition we propose …


Philco: Some Recollections Of The Philco Transac S-2000, Saul Rosen Jun 1991

Philco: Some Recollections Of The Philco Transac S-2000, Saul Rosen

Department of Computer Science Technical Reports

No abstract provided.


Performance Experiments And Optimizations Of Pde Sparse Solvers On Hypercubes,, Mo Mu, John R. Rice, Jingwen Wang Jun 1991

Performance Experiments And Optimizations Of Pde Sparse Solvers On Hypercubes,, Mo Mu, John R. Rice, Jingwen Wang

Department of Computer Science Technical Reports

No abstract provided.


Correspondence Problem In Image Sequence Analysis, Chia-Hoang Lee, Anupam Joshi May 1991

Correspondence Problem In Image Sequence Analysis, Chia-Hoang Lee, Anupam Joshi

Department of Computer Science Technical Reports

No abstract provided.


Stability Of Token Passing Rings, Leonidas Greorgiadis, Wojciech Szpankowski May 1991

Stability Of Token Passing Rings, Leonidas Greorgiadis, Wojciech Szpankowski

Department of Computer Science Technical Reports

No abstract provided.


Silicon Nitride Deposition, Chromium Corrosion Mechanisms And Source/Drain Parasitic Resistance In Amorphous Silicon Thin Film Transistors, Shengwen Luan, Gerold W. Neudeck May 1991

Silicon Nitride Deposition, Chromium Corrosion Mechanisms And Source/Drain Parasitic Resistance In Amorphous Silicon Thin Film Transistors, Shengwen Luan, Gerold W. Neudeck

Department of Electrical and Computer Engineering Technical Reports

Hydrogenated amorphous silicon (a-Si:H) based thin film transistors (TFTs) are finding increased application as switching elements in active-matrix liquid crystal displays (AMLCDs). Extensive research has been focussed on optimizing fabrication conditions to improve materials quality and on reducing channel length to increase device speed. However, the basic physics and chemistry have not yet been fully understood. In addition, little attention has been paid to the significant effect of source/drain parasitics. The work described in this thesis is closely related to the speed and stability issues on the discrete device level. Specifically, the influence of gate nitride deposition and its NH3 …


Preventing Weak Password Choices, Eugene H. Spafford Apr 1991

Preventing Weak Password Choices, Eugene H. Spafford

Department of Computer Science Technical Reports

No abstract provided.


Indiana Model Zoning Ordinance, T. William Patterson Apr 1991

Indiana Model Zoning Ordinance, T. William Patterson

Indiana Local Technical Assistance Program (LTAP) Publications

This HERPICC model is intended as a basis for helping Indiana counties, cities, and towns to write or revise local regulatory ordinances. Having such a model is especially urgent because field trips taken throughout the state have revealed that many jurisdictions are vulnerable to lawsuits because their ordinances are out of date and do not conform to the current provisions of the Indiana Code. This situation is made more serious by the lack of adequate professional planning staff or consultants available to local governments. Many may have received inaccurate advice from their attorneys. Too often, attorneys are not familiar enough …


A Purdue University Course In The History Of Computing, Saul Rosen Mar 1991

A Purdue University Course In The History Of Computing, Saul Rosen

Department of Computer Science Technical Reports

No abstract provided.


Transaction Models For Advanced Database Applications, Ahmed K. Elmagarmid Mar 1991

Transaction Models For Advanced Database Applications, Ahmed K. Elmagarmid

Department of Computer Science Technical Reports

No abstract provided.


Slip Lining Of Existing Steel Pipe, Richard Thomas Mar 1991

Slip Lining Of Existing Steel Pipe, Richard Thomas

Purdue Road School

No abstract provided.


Strategic Highway Research Program (Shrp), Damian J. Kulash Mar 1991

Strategic Highway Research Program (Shrp), Damian J. Kulash

Purdue Road School

No abstract provided.


Federal Update On Intelligent Vehicle Highway System (Ivhs), Lyle Saxton Mar 1991

Federal Update On Intelligent Vehicle Highway System (Ivhs), Lyle Saxton

Purdue Road School

No abstract provided.


Highlights Of The Indiana Department Of Transportation Research Program, Barry K. Partridge Mar 1991

Highlights Of The Indiana Department Of Transportation Research Program, Barry K. Partridge

Purdue Road School

No abstract provided.


Proceedings Of The 77th Annual Road School, C. F. Scholer, K. C. Sinha, William B. Mcdermott Mar 1991

Proceedings Of The 77th Annual Road School, C. F. Scholer, K. C. Sinha, William B. Mcdermott

Purdue Road School

No abstract provided.


Transportation Strategies For Indiana, Christine Letts Mar 1991

Transportation Strategies For Indiana, Christine Letts

Purdue Road School

No abstract provided.


Preface, Purdue Road School Mar 1991

Preface, Purdue Road School

Purdue Road School

No abstract provided.


Alternative Methods For Transportation Funding, James B. Query Mar 1991

Alternative Methods For Transportation Funding, James B. Query

Purdue Road School

No abstract provided.


Highways Of National Significance: Keystones Of Future Federal Funding, Bruce E. Cannon Mar 1991

Highways Of National Significance: Keystones Of Future Federal Funding, Bruce E. Cannon

Purdue Road School

No abstract provided.


Efficient Crcw-Pram Algorithms Combining Multiple Autonomous Databases, Alberto Apostolico Feb 1991

Efficient Crcw-Pram Algorithms Combining Multiple Autonomous Databases, Alberto Apostolico

Department of Computer Science Technical Reports

No abstract provided.


Public Administration And The Library Of Jean-Baptiste Colbert, E. Stewart Saunders Jan 1991

Public Administration And The Library Of Jean-Baptiste Colbert, E. Stewart Saunders

Libraries Research Publications

Jean-Baptiste Colbert was a minister to Louis XIV from 1661 to 1683 and was one of the principal architects of royal absolutism in seventeenth-century France. His personal library served him as one of the major sources of information for the administration of government and the augmentation of the rights of the monarchy. Many of the archival sources available to the royal administration had been dispersed since the late Middle Ages. The two librarians working under Colbert, Pierre Carcavi and Etienne Baluze, assembled many of the necessary documents in the Colbertine and functioned as "reference librarians" to provide Colbert and his …


The Parallelization Of Level 2 And 3 Blas Operations On Distributed Memory Machines, M. Aboelaze, N. P. Chrisochoides, Elias N. Houstis, C. E. Houstis Jan 1991

The Parallelization Of Level 2 And 3 Blas Operations On Distributed Memory Machines, M. Aboelaze, N. P. Chrisochoides, Elias N. Houstis, C. E. Houstis

Department of Computer Science Technical Reports

No abstract provided.


Performance Of Pde Sparse Solvers On Hypercubes, Mo Mu, John R. Rice Jan 1991

Performance Of Pde Sparse Solvers On Hypercubes, Mo Mu, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.


From The Editors, Diana George, Nancy Grimm, Edward Lotto Jan 1991

From The Editors, Diana George, Nancy Grimm, Edward Lotto

The Writing Center Journal

No abstract provided.


The Development Of Optimal Strategies For Maintenance, Rehabilitation And Replacement Of Highway Bridges, Vol. 1: The Elements Of The Indiana Bridge Management System (Ibms) : Executive Summary, Kumares C. Sinha, Mitsuru Saito, Yi Jiang, Sudhir Murthy, Ah Beng Tee, Mark D. Bowman Jan 1991

The Development Of Optimal Strategies For Maintenance, Rehabilitation And Replacement Of Highway Bridges, Vol. 1: The Elements Of The Indiana Bridge Management System (Ibms) : Executive Summary, Kumares C. Sinha, Mitsuru Saito, Yi Jiang, Sudhir Murthy, Ah Beng Tee, Mark D. Bowman

JTRP Technical Reports

No abstract provided.


The Uniform Soybean Tests: Northern States 1991, J. R. Wilcox Jan 1991

The Uniform Soybean Tests: Northern States 1991, J. R. Wilcox

Uniform Soybean Tests Northern Region

No abstract provided.


1991 Directory Of Indiana State, County, City And Town Officials Responsible For Road And Street Work, Herpicc Jan 1991

1991 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.


Endothelial Superoxide Production In The Isolated Rat Heart During Early Reperfusion After Ischemia -- A Histochemical Study, Charles F. Babbs, Meloney D. Cregor, John J. Turek, Stephen F. Badylak Jan 1991

Endothelial Superoxide Production In The Isolated Rat Heart During Early Reperfusion After Ischemia -- A Histochemical Study, Charles F. Babbs, Meloney D. Cregor, John J. Turek, Stephen F. Badylak

Weldon School of Biomedical Engineering Faculty Publications

This paper describes a histochemical study of superoxide generation in buffer-perfused, isolated rat hearts during the first 2 minutes of reperfusion after 60 minutes of warm ischemia. Superoxide radical production was demonstrated by a modification of Karnovsky's manganese/diaminobenzidine technique, in which superoxide oxidizes Mn++ to Mn+++ ions, which in turn oxidize diaminobenzidine to form amber, osmiophilic polymers, observable by light or electron microscopy. Isolated hearts were rendered ischemic, reperfused with oxygen equilibrated buffer containing Mn++ and diaminobenzidine, fixed by perfusion with Trump's solution, and processed for light and electron microscopy. The method consistently demonstrated evidence of superoxide generation near the …


Methylene Blue As An Inhibitor Of Superoxide Generation By Xanthene Oxidase: A Potential New Drug For The Attenuation Of Ischemia/Reperfusion Injury, Steven C. Salaris, Charles F. Babbs, William D. Voorhees Jan 1991

Methylene Blue As An Inhibitor Of Superoxide Generation By Xanthene Oxidase: A Potential New Drug For The Attenuation Of Ischemia/Reperfusion Injury, Steven C. Salaris, Charles F. Babbs, William D. Voorhees

Weldon School of Biomedical Engineering Faculty Publications

Tissue oxidases, especially xanthine oxidase, have been proposed as primary sources of toxic oxygen radicals in many experimental models of disease states. Among these, ischemia-reperfusion injury may be of the greatest clinical interest. In this paper we propose the use of methylene blue as a means of suppressing the production of superoxide radicals, O2, by acting as an alternative electron acceptor for xanthine oxidase. Previous work has indicated that methylene blue accepts electrons from xanthine oxidase at the iron-sulfur center. Initial experiments in our laboratory demonstrated that (1) pairs of electrons from each enzymatic oxidation are transferred to methylene blue, …


Effective Estimation And Computer Control Of Minimum Tumour Temperature During Conductive Interstitial Hyperthermia, J A. Deford, Charles F. Babbs, U H. Patel, M W. Bleyer, J A. Marchosky, C J. Moran Jan 1991

Effective Estimation And Computer Control Of Minimum Tumour Temperature During Conductive Interstitial Hyperthermia, J A. Deford, Charles F. Babbs, U H. Patel, M W. Bleyer, J A. Marchosky, C J. Moran

Weldon School of Biomedical Engineering Faculty Publications

The goal of heat therapy in the treatment of malignant disease is to raise the temperature of all neoplastic tissue to a cytotoxic temperature for a predetermined period of time. This seemingly simple task has proved difficult in-vivo, in part because of nonuniform power absorption and in part because of nonhomogeneous and time varying tumour blood flow. We have addressed this difficulty first by utilizing the conceptually simple technique of conductive interstitial hyperthermia, in which the tumour is warmed by multiple, electrically heated catheters, and second by implementing on-line conu·ol of minimum tumour temperatures near each catheter, estimated on the …