Digital Commons Network^™

Adding Slip Support To Unix System V, K. B. Sheets

Department of Electrical and Computer Engineering Technical Reports

SLIP (Serial Line Internet Protocal)[ROMK88][KARE86] is a means by which a serial line may be used as the data link interface for TCP/IP communication [POST80]. This document describes software which can be used to enable a computer running UNIX* System V Release 3 and equipped with the WIN3B [TWG86] software to utilize SLIP. This software is necessary to our organization since we have several UNIX machines for which no Ethernet interfaces are available and from which we would like to be able to access the campus network.

A Grid Based Subtree-Subcube Assignment Strategy For Solving Pdes On Hypercubes, Mo Mu, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

Solving Linear Systems With Sparse Matrices On Hypercubes, Mo Mu, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

Increasing The Efficiency Of Vector Itpack, Robert E. Lynch

Department of Computer Science Technical Reports

No abstract provided.

Automatic Load Balanced Partitioning Strategies For Pde Computations, N. P. Chrisochoides, C. E. Houstis, Elias N. Houstis, S. K. Kortesis, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

Traffic Signing For Local Areas, Herpicc

Indiana Local Technical Assistance Program (LTAP) Publications

One of the most important responsibilities of local street and highway departments is to provide the driving public with adequate, appropriate signs to permit safe travel over unfamiliar roads. Unfortunately, this responsibility is frequently neglected or, at best, under-emphasized. The most common excuse used to justify this neglect is inadequate funding, which is undoubtedly true. What is equally true, however, is that resurfacing roads and streets is more politically popular than re-signing them, even though resurfacing leads to increased speeds, which in turn can lead to increased accident experience on improperly or inadequately signed facilities.

This brief report is not …

Fish1d 2.1 User’S Manual, M. A. Stettler, P. E. Dodd, M. S. Lundstrom

Department of Electrical and Computer Engineering Technical Reports

FISH1D is a computer program that solves the one-dimensional Poisson equation for electrostatic Fields In Semiconductor Heterostructures. The program will print or plot the electrostatic potential, electric field, electron and hole densities, dopant density, ionized dopant density, and other quantities of interest versus position at an applied bias voltage (assuming zero current). A capacitance or sheet carrier concentration versus voltage analysis may also be performed. While FISH1D was originally written for the ternary AlxGa1_xAs, it has been modified to simulate CdxHg1_xTe, ZnSe, GexSi1_x, and Si as well, and the program can be readily modified to analyze other semiconductors through the …

Construction Specifications For Highway Projects Requiring Horizontal Earth Boring And/Or Pipe Jacking Techniques: Executive Summary, Donn Edward Hancher, Thomas D. White, David Thomas Iseley

JTRP Technical Reports

No abstract provided.

Writing As A Social Process: A Theoretical Foundation For Writing Centers?, Lisa Ede

The Writing Center Journal

No abstract provided.

Construction Specifications For Highway Projects Requiring Horizontal Earth Boring And/Or Pipe Jacking Techniques, Donn Edward Hancher, Thomas D. White, David Thomas Iseley

JTRP Technical Reports

No abstract provided.

The Development Of Optimal Strategies For Maintenance, Rehabilitation, And Replacement Of Highway Bridges: Volume 3 - Bridge Traffic Safety Evaluation, Sudhir Murthy, Kumares C. Sinha

JTRP Technical Reports

No abstract provided.

The Uniform Soybean Tests: Northern States 1989, J. R. Wilcox

Uniform Soybean Tests Northern Region

No abstract provided.

1989 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.

Scatchard Analysis Of Methane Sulfinic Acid Production From Dimethyl Sulfoxide: A Method To Quantify Hydroxyl Radical Formation In Physiologic Systems, Charles F. Babbs, David W. Griffin

Weldon School of Biomedical Engineering Faculty Publications

A major impediment to the confirmation of free radical mechanisms in pathogenesis is a lack of direct, chemical evidence that oxygen centered free radicals actually arise in living tissues in quantities sufficient to cause serious damage. This investigation was conducted to validate the use of dimethyl sulfoxide (DMSO) as a quantitative molecular probe for the generation of hydroxyl radicals (HO*) under physiologic conditions. Reaction of HO* with DMSO produces methane sulfinic acid (MSA) as a primary product, which can be detected by a simple colorimetric assay. To develop a method for estimating total HO* production, we studied two model systems: …

Consequences Of Valley Filtering On Abrupt Junction Algaas/Gaas Heterojunction Bipolar Transistors, Amitava Das, Mark S. Lundstrom

Department of Electrical and Computer Engineering Faculty Publications

Electron transport in AlGaAs/GaAs heterojunction bipolar transistors with compositionally abrupt emitter‐base junctions is examined. Transport across the abrupt emitter‐base heterojunction is treated quantum mechanically, and the Monte Carlo technique is used to study transport through the base. Although there is a sizeable population of upper‐valley electrons in the bulk emitter, the AlGaAs/GaAs heterojunction is found to favor the injection of Γ‐valley electrons into the base. This valley filtering effect enhances device performance by reducing base transit time, but quantum mechanical tunneling lowers the average energy of the injected flux which increases base transit time. The design of a heterojunction bipolar …

Quantitative Effects Of Iron Chelators On Hydroxyl Radical Production By The Superoxide-Driven Fenton Raction, Jean Blair Smith, Joanne C. Cusumano, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

Iron bound to certain chelators is known to promote the conversion of superoxide radicals (O2) to hydroxyl radicals (HO') by the superoxide-driven Fenton reaction. The production of HO' by various iron chelates was studied using the reaction of dimethyl sulfoxide and HO' to produce methane sulphinic acid. Methane sulphinic acid was quantified by use of a simple colorimetric assay and used to determine the amounts of HO' produced. Superoxide was generated from 200 M hypoxanthine and 0.05 U/ml xanthine oxidase in the presence of 0-100 M iron and 100 M of each chelator. The results of this preliminary investigation illustrate …

Effect Of Oxygen Concentration On The Formation Of Malondialdehyde-Like Material In A Model Of Tissue Ischemia And Reoxygenation, Steven C. Salaris, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

This study was conducted to explore the functional relationship between oxygen concentration during tissue reoxygenation after ischemia and the extent of postischemic lipid peroxidation, an indicator of reoxygenation injury. Excised rat liver or kidney tissue was rendered ischemic for 1 h at 37°C, minced into 1 mm3 fragments, and then reoxygenated for 1 h in flasks of buffered salt solution containing various amounts of oxygen. Production of malondialdehyde-like material (MDA) was measured to indicate lipid peroxidation. MDA production was minimal at oxygen tensions less than 10 mmHg, increased sharply from 10 to 50 mmHg, and plateaued at approximately 100 mmHg. …

Lethal Hydroxyl Radical Production In Paraquat-Treated Plants, Charles F. Babbs, Jo Ann Pham, Ronald C. Coolbaugh

Weldon School of Biomedical Engineering Faculty Publications

Bipyridinium herbicides, including paraquat and diquat, are believed to act by generating highly reactive, oxygen-centered free radicals within chloroplasts when treated plants are exposed to sunlight. This hypothesis has not yet been confirmed by direct chemical measurements of specific free radicals. We studied paraquat-treated plants using a new method able to detect and quantify formation of highly reactive and deleterious hydroxyl radicals (HO*), in which dimethyl sulfoxide (DMSO) is used as a molecular probe. DMSO is oxidized by HO* to form the stable, nonradical compound, methane sulfinic acid, which can be easily extracted from plant tissue and measured spectrophotometrically. Initial …

Effective Minority‐Carrier Hole Confinement Of Si‐Doped, N+‐N Gaas Homojunction Barriers, H. L. Chuang, M. E. Klausmeier-Brown, Michael R. Melloch, Mark S. Lundstrom

Department of Electrical and Computer Engineering Faculty Publications

he electrical performance of Si‐doped n+‐n GaAs homojunction barriers grown by molecular‐beam epitaxy (MBE) is characterized and analyzed. We employed a successive etch technique to study hole injection currents in GaAs n+‐n‐p+ solar cells. The results of the analysis show that minority‐carrier holes in our MBE‐grown material have a mobility of 293 cm2/V s for an n‐type Si‐doping level of 1.5×1016 cm−3 at 300 K. The interface recombination velocity for these homojunction barriers is estimated to be less than 1×103 cm/s, and it appears to be comparable to that recently observed for …

Back Matter

The Writing Center Journal

No abstract provided.

Back Matter

The Writing Center Journal

No abstract provided.

Issues In The Writing Lab: An Eric/Rcs Report, Hilary Taylor Holbrook

The Writing Center Journal

No abstract provided.

Front Matter

The Writing Center Journal

No abstract provided.

Announcements

The Writing Center Journal

No abstract provided.

Front Matter

The Writing Center Journal

No abstract provided.

Ethical Issues In Peer Tutoring: A Defense Of Collaborative Learning, Richard Behm

The Writing Center Journal

No abstract provided.

Writing Centers And Writing-For-Learning, Richard Leahy

The Writing Center Journal

No abstract provided.

Announcements

The Writing Center Journal

No abstract provided.

Speed Trends On Indiana Rural Interstate Highways: Traffic Research Report, David L. Cochran

JTRP Technical Reports

No abstract provided.

1988 Update Of The Indiana Highway Cost Allocation Study, Kumares C. Sinha, Sunil K. Saha, Tien Fang Fwa, Ah Beng Tee, Harold L. Michael

JTRP Technical Reports

No abstract provided.