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

Digital Commons Network™

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

Engineering

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 16471 - 16500 of 18357

Full-Text Articles in Entire DC Network

Santa Clara Magazine, Volume 42 Number 1, Summer 2000, Santa Clara University Jul 2000

Santa Clara Magazine, Volume 42 Number 1, Summer 2000, Santa Clara University

Santa Clara Magazine

8 - ATTACK OF THE KILLER TOMATOES? By Miriam Schulman. Beyond the hype of the headlines, there are no simple answers to the ethical questions raised by genetically modified food.

14 - BRAVE NEW WORLD By Tamara Straus. Now the lawyers want inside your head as they struggle to answer, "Who owns an idea?" Just the mere question is changing the face of legal education.

18 - THE GREAT GRADE GIVEAWAY By Jeff Zorn. Today's grades don't mean jack. So says one Santa Clara professor in this memoir and commentary on the evils of modern day grade inflation.

22 - …


An Investigation Of Skill Acquisition Under Conditions Of Augmented Reality, Russell P. Milham Jul 2000

An Investigation Of Skill Acquisition Under Conditions Of Augmented Reality, Russell P. Milham

Master's Theses - Daytona Beach

Augmented reality is a virtual environment that integrates rendered content with the experience of the real world. There is evidence suggesting that augmented reality provides for important spatial constancy of objects relative to the real world coordinate system and that this quality contributes to rapid skill acquisition. The qualities of simulation, through the use of augmented reality, may be incorporated into actual job activities to produce a condition of "just-in-time learning." This may make possible the rapid acquisition of information and reliable completion of novel or infrequently performed tasks by individuals possessing a basic skill-set. The purpose of this research …


Safety Improvements For Two-Lane Rural Roads, Kenneth R. Agent, Jerry G. Pigman, Nikiforos Stamatiadis, Juan Villalba Jul 2000

Safety Improvements For Two-Lane Rural Roads, Kenneth R. Agent, Jerry G. Pigman, Nikiforos Stamatiadis, Juan Villalba

Kentucky Transportation Center Research Report

Two-lane rural roads in Kentucky have the highest fatal crash rate of any type of highway in Kentucky. This report is the first phase of a study with the objectives of: 1) identifying safety problems related to crashes on two-lane rural roads, 2) identifying high-crash locations, ad 3) recommending possible improvements. The procedure used in this phase of the study involved an analysis of crash data to identify characteristics of crashes on two-lane rural roads, use of the crash data to identify one-mile sections having critical crash rates, and a review of countermeasures to start development of recommendations to reduce …


A-A Highway Safety Study, Kenneth R. Agent, Jerry G. Pigman Jul 2000

A-A Highway Safety Study, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

As directed by Legislative action, a traffic safety study for the A-A Highway was to be conducted in fiscal year 1999-2000. An excerpt from the 1998-2000 budget and the Budget Memorandum included the following language related to the scope and direction of the study:

“The Department of Highways shall conduct an intensive traffic accident study on the A-A highway in fiscal year 1999-2000. It shall include an analysis of visibility, signage,lighting, turn lanes, and road striping at each public and private access. The accidents shall be identified by location and by fatalities, major injury, non injury, and minor injury. Causes …


Development In The Petroleum Sub-Sector And Their Impacts On Nigerian Economy., I. P. Ojinnaka Jul 2000

Development In The Petroleum Sub-Sector And Their Impacts On Nigerian Economy., I. P. Ojinnaka

Bullion

The development of the petroleum industry has had both negative and positive impacts on the Nigerian economy. Two schools of thought can be examined. First, that positive impacts outweigh the negative, and secondly, the inverse. The paper will examined the impacts and analyzed the positive ones. From the approach of the study it is clear that the petroleum industry has had both negative and positive impacts on the Nigerian economy. Nigeria without petroleum could be like any other country without oil or gas, that is, import dependent. However, Nigeria with oil is the best thing that could have happened to …


Routing Optimization Through Computer-Aided Simulation, Madhusudhan Akundi Jul 2000

Routing Optimization Through Computer-Aided Simulation, Madhusudhan Akundi

Electrical & Computer Engineering Theses & Dissertations

Routing has always been a challenging field, and the various techniques of mathematics and operations research have been developed. For commercial organizations, routing has begun to receive extensive attention because of the savings gained in terms of time, money, personnel, and the transportation fleet by developing optimized routing networks. Until recently, it was difficult to develop optimized networks due to the computational difficulties of the problem. However, with the advancement in computer technology and processing speeds, it has become possible to simulate a large number of routing scenarios and determine optimal solutions for a given set of constraints. Not only …


A Flowchart Structure For Modification Of A Modsim Process Model, Murali K. Adatrao Jul 2000

A Flowchart Structure For Modification Of A Modsim Process Model, Murali K. Adatrao

Electrical & Computer Engineering Theses & Dissertations

There are many software processes and software development models that support the development of a software model prior to implementation. However, more often than not, these practices are not followed resulting in a lack of documentation of the intended functionality of the software. As a result, software often becomes a black box for later developers. Even a simple bug fix can turn into an exhaustive task for the developers, as they must attempt to infer the intended system behavior. New designers cannot make any changes to the software or extend the software behavior, as the underlying model within the software …


Simulation Studies Of Cellular Electroporation Due To Ultra-Fast Electric Pulses, Gayathri R. Barthaki Jul 2000

Simulation Studies Of Cellular Electroporation Due To Ultra-Fast Electric Pulses, Gayathri R. Barthaki

Electrical & Computer Engineering Theses & Dissertations

Biological systems, from cells to ecosystems, are intrinsically complex information-processing networks. It often becomes difficult to predict their behavior during an experimental investigation, as their behavior is fundamentally chaotic, Hence, building models that mimic the dynamics of such systems and performing computer simulations would help in understanding, predicting, controlling and optimizing these systems. This thesis is aimed at the development of a mathematical model for the process of electroporation in biological cells when they are subjected to ultra-fast electric pulses and at conducting simulations to understand its dynamic behavior with special emphasis on the physics of ultra-short time scales.

With …


Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 16, Number 6, June 2000, College Of Engineering And Computer Science, Wright State University Jun 2000

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 16, Number 6, June 2000, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A fourteen page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.


Environmental Guidelines For New And Existing Piggeries, A Latto, John Noonan, R. J. Taylor Jun 2000

Environmental Guidelines For New And Existing Piggeries, A Latto, John Noonan, R. J. Taylor

Bulletins 4000 -

These guidelines apply to the management of Western Australia piggeries in Western Australia, including intensive Growing pigs under intensive conditions where the and extensive operations, straw-based housing and animals spend their entire life cycle indoors, is an combinations of these (otherwise referred to as semi- important part of the Western Australian and intensive housing).


Intermodal Transit System Coordination With Dynamic Vehicle Dispatching, Md. Shoaib Chowdhury May 2000

Intermodal Transit System Coordination With Dynamic Vehicle Dispatching, Md. Shoaib Chowdhury

Dissertations

In most urban areas where transit demand is spread widely, passengers may be served by an intermodal transit system, consisting of a rail transit line (or a bus rapid transit route) and a numbers of feeder routes connecting at different transfer stations. In such a system, passengers may need one or more transfers to complete their journey. Therefore, scheduling vehicles operating in the system with special attention to reduce transfer time can contribute significantly service quality improvements. In this study two models, one for coordination of a general intermodal. transit system and another for dynamic dispatching of vehicles on coordinated …


Endotoxin Removal From Protein Solutions By Immobilized Metal Ion Affinity Chromatography, Yun Kang May 2000

Endotoxin Removal From Protein Solutions By Immobilized Metal Ion Affinity Chromatography, Yun Kang

Dissertations

In the biotechnology/pharmaceutical industry, the removal of endotoxins from final protein product has always been a challenge. A novel method for endotoxin removal from protein solutions, immobilized metal (ion) affinity chromatography (IMAC) has been developed in this study. Fe3+ was charged to a chelating gel that contains iminodiacetic acid (IDA). The IDA- Fe3+ IMAC column was exploited to remove endotoxin from protein solutions. This method involves the adsorption of the endotoxin on IMAC column. More than 99% endotoxin is removed and protein yield is higher than 90%. IDA-Fe3+ IMAC has proved to be an economical and efficient …


Investigation Of The Baroreflex Of The Rat : Steady State And Dynamic Features, Xiaorui Tang May 2000

Investigation Of The Baroreflex Of The Rat : Steady State And Dynamic Features, Xiaorui Tang

Dissertations

The baroreflex is one of the most important feedback systems in the body to maintain blood pressure variation within the homeostatic range. In this dissertation, the important features of the carotid and aortic baroreflexes have been extensively investigated on ventilated, central nervous system intact, neuromuscular blocked (NMB) rats using different control system and signal processing tools. Studies have demonstrated that sinoaortic denervation (SAD) caused substantial increases in the blood pressure variability. Comparing the pre- and post-SAD blood pressure spectra, there was a significant increase of power in the very low frequency region (0.00195 -0.2 Hz), and a significant decrease of …


Simulation And Modeling Of Magnetically-Assisted Impaction Coating (Maic) Process For Dry Particle Coating, Bodhisattwa Chaudhuri May 2000

Simulation And Modeling Of Magnetically-Assisted Impaction Coating (Maic) Process For Dry Particle Coating, Bodhisattwa Chaudhuri

Dissertations

The objective of proposed research is to model, and understand the processes happening at multiple length and time scales in magnetically assisted impaction coating process. The smallest length scale is of the order of the molecular size and is important because during collisions the molecules rearrange themselves to form a semi-permanent bond between the core and secondary particles, which is studied by using the results of direct numerical integration of the governing Newton's equations. The effect of parameters such as size, orientation and relative velocity of particles on the collision mechanics is quantified. The largest length scale which is the …


Biomechanical Evaluation Of Patient Transfers, Charles Costa May 2000

Biomechanical Evaluation Of Patient Transfers, Charles Costa

Theses

The purpose of this study is to identify the problem encountered when a patient with limited strength and mobility needs assistance in transferring from a wheelchair to another location.

This study took advantage of ergonomic techniques to isolate the source of stress, and limited these stresses according to the standards of the National Institute of Safety and Health Administration.

A device was developed whereby the stresses of a patient transfer were eliminated. By using a conventional wheelchair and a recliner as a starting point, effectively combining these components into a single multifunctional unit the goal of reducing stress was achieved. …


Development Of A Demanufacturing System Modeling And Simulation Tool, Jingjing Hu May 2000

Development Of A Demanufacturing System Modeling And Simulation Tool, Jingjing Hu

Theses

This thesis develops a demanufacturing system modeling and simulation tool as an interface between simulation methods and demanufacturers. This tool can mimic the behavior of demanufacturing facility and obtain penetrable understanding of the system. By this modeling tool, one can intuitively analyze the behavior of a system and improve the operational efficiency. Detailed designs on the simulation tool including user interface, logic, and user view are presented in this thesis. The initial prototype version of the system modeling and simulation tool has been completed with fourteen modules in the developed template. Each object in the template refers to a specific …


Method Of Removing Carbon From Fly Ash, Robert William Styron, Jiann-Yangg Hwang May 2000

Method Of Removing Carbon From Fly Ash, Robert William Styron, Jiann-Yangg Hwang

Michigan Tech Patents

A froth flotation method is provided for removing carbon from fly ash which utilizes an environmental friendly conditioning agent. The conditioning agent preferably comprises a biodegradable oil which is added to a slurry containing raw fly ash and water. The conditioning agent renders the carbon in the fly ash hydrophobic such that upon aeration of the slurry, air bubbles attach to the carbon particles and carry' them to the surface of the slurry in the form of a froth, such that the carbon may be removed.


Granularity As An Optimal Approach To Uncertainty - A General Mathematical Idea With Applications To Sleep, Consumption, Traffic Control, Learning, Etc., Vladik Kreinovich, Hung T. Nguyen May 2000

Granularity As An Optimal Approach To Uncertainty - A General Mathematical Idea With Applications To Sleep, Consumption, Traffic Control, Learning, Etc., Vladik Kreinovich, Hung T. Nguyen

Departmental Technical Reports (CS)

Traditional statistical and fuzzy approaches to describing uncertainty are continuous in the sense that we use a (potentially infinite) set of values from the interval [0,1] to characterize possible degrees of uncertainty. In reality, experts describe their degree of belief by using one of the finitely many words from natural language; in this sense, the actual description of expert uncertainty is granular.

In this paper, we show that in some reasonable sense, granularity is the optimal way of describing uncertainty. A similar mathematical idea explains similar "granularity" in such diverse areas as sleep, consumption, traffic control, and learning.


Human Health Risk Assessment: Recreational Use Of A Brownfield Site Volunteer Army Ammunition Plant Chemical Farmers Industries, Inc., Lease Area Chattanooga, Tennessee, Sandra Gail Skipper Koss May 2000

Human Health Risk Assessment: Recreational Use Of A Brownfield Site Volunteer Army Ammunition Plant Chemical Farmers Industries, Inc., Lease Area Chattanooga, Tennessee, Sandra Gail Skipper Koss

Masters Theses and Doctoral Dissertations

This thesis investigates the suitability of a lead-contaminated Brownfield, the Volunteer Army Ammunition Plant (VAAP) site in Chattanooga, for recreational use such as children's softball. The assessment includes a review of soil sample data obtained at the VAAP by IT Corporation from 1994 to 1999, particulate monitoring of softball activities at Warner Park by the author in 1999-2000, and determination of the fate and transport of lead contamination in the soil. The fate and transport were evaluated using EPA's Integrated Exposure Uptake Biokinetic (IEUBK) model for children under 7 years of age. The adult effects were calculated using an EPA …


Using Raster Sketches For Digital Image Retrieval, James Carswell May 2000

Using Raster Sketches For Digital Image Retrieval, James Carswell

Other resources

This research addresses the problem of content-based image retrieval using queries on image-object shape, completely in the raster domain. It focuses on the particularities of image databases encountered in typical topographic applications and presents the development of an environment for visual information management that enables such queries. The query consists of a user-provided raster sketch of the shape of an imaged object. The objective of the search is to retrieve images that contain an object sufficiently similar to the one specified in the query. The new contribution of this work combines the design of a comprehensive digital image database on-line …


Apr 2000 Apr 2000

Apr 2000

Lester F. Larsen Tractor Museum: Planning and Development Documents

State Museum Report Raffle Committee Book Sales Plans


Impulse, Dave Graves, Lisa Schaefer Apr 2000

Impulse, Dave Graves, Lisa Schaefer

Impulse (Jerome J. Lohr College of Engineering Publication)

Features:
[Page] 2 Students find 'fresh project with construction of hovercraft
[Page] 4 Students build award-winning moonbuggy in their first try
[Page] 5 Improved jig assembly leaves ADVANCE manager tickled
[Page] 6 Once again, SDSU students win the ASME design contest
[Page] 7 Former dean Duane Sander is still solving problems
[Page] 8 Daktronics co-founder Aelred Kurtenbach offers simple advice
[Page] 10 Isaak earns reputation as national leader in quality control
[Page] 12 Gene Amdahl is truly an entrepreneur at heart
[Page] 13 Entrepreneur of the Year takes uncomplicated approach
[Page] 14 Schmidt creates company to call his own
College: …


Data Generation In The Nigerian Environment: The Cbn Experience., A. A. Sere-Ejembi Apr 2000

Data Generation In The Nigerian Environment: The Cbn Experience., A. A. Sere-Ejembi

Bullion

The paper examines data collection activities of the statistical services division in collaboration with its Lagos liaison office as well as the zonal research units. The paper analyzes the survey methods applied by them. The task of easing data collection should be regarded as a continuous process. This is relevant even to the most developed economies with sophisticated technology for data collection and processing. Finally, with an improvement in the literacy level and overall appreciation of the role of reliable statistics in the country, it is believed that the public would embrace data generation and availability of relevant statistics will …


Unmanned Research Vehicle (Urv): Development, Implementation, & Flight Test Of A Mimo Digital Flight Control System Designed Using Quantitative Feedback Theory, Constantine H. Houpis, Steven J. Rasmussen Apr 2000

Unmanned Research Vehicle (Urv): Development, Implementation, & Flight Test Of A Mimo Digital Flight Control System Designed Using Quantitative Feedback Theory, Constantine H. Houpis, Steven J. Rasmussen

Faculty Publications

The Quantitative Feedback Theory (QFT) design technique, which has the ability to bridge the gap between theory and the real-world control design problem, is utilized in the design of a MIMO digital flight control system for an unmanned research vehicle (URV) that is presented in this paper. The design illustrates how the real-world knowledge of the plant to be controlled and the desired performance specifications can be utilized in trying to achieve a successful robust design for a nonlinear control problem. This paper presents some of the issues involved in developing, implementing, and flight testing a flight control system (FCS) …


Process Flow Optimization Studies Through Discrete Event Simulation, Milind Chokshi Apr 2000

Process Flow Optimization Studies Through Discrete Event Simulation, Milind Chokshi

Electrical & Computer Engineering Theses & Dissertations

Computer-aided simulation has begun to emerge as a powerful tool for numerical analysis of the behavior and anticipated performance of industrial systems and their optimization. Applications include materials handling, storage and controls systems, prediction of manufacturing efficiencies, and production optimization. Simulations are used to test baseline models and subsequently analyze new production concepts, operating strategies, and planned procedures prior to costly implementation.

The study of process flows in a manufacturing environment is difficult due to its inherent stochastic nature. Breakdown of the sub-systems and failures of machines is a random process and needs to be solved based on concepts of …


Learning Reinforced Concreyte Design Principles Using A Java-Vrml Based Design Studio, Amarneethi Vamadevan Apr 2000

Learning Reinforced Concreyte Design Principles Using A Java-Vrml Based Design Studio, Amarneethi Vamadevan

Masters Theses

Dynamics involving reinforced concrete design are the first real engineering course encountered by the undergraduate construction engineering students. Quite often its associated rigorous theories makes it an uninteresting academic hurdle for many below mediocre students. However when the theory is exemplified with multimedia, interaction and visualization techniques, the conceptual understanding is enhanced. The teaching methodology presented in this thesis is based on presenting students with an individualized, interactive and guided learning environment. The main elements of this approach are: a means of assimilating the student's interactive learning knowledge and behavior (user model), representation of the instructor's guidance and assessment knowledge …


Diffusion Problems In Wound Healing And A Scattering Approach To Immune System Interactions, Julia Suzanne Arnold Apr 2000

Diffusion Problems In Wound Healing And A Scattering Approach To Immune System Interactions, Julia Suzanne Arnold

Mathematics & Statistics Theses & Dissertations

A theoretical model for the existence of a Critical Size Defect (CSD) in certain animals is the focus of the majority of this dissertation. Adam [1] recently developed a one-dimensional model of this phenomenon, and chapters I–V address the exist the CSD in a two-dimensional model and a three-dimensional model. The two dimensional (or 1-d circular) model is the more appropriate for a study of CSD's. In that model we assume a circular wound of uniform depth and develop a time-independent form of the diffusion equation relevant to the study of the CSD phenomenon. It transpires that the range of …


A Comparison Of Quasi-Static Indentation Testing To Low Velocity Impact Testing, Michael J. Douglas Apr 2000

A Comparison Of Quasi-Static Indentation Testing To Low Velocity Impact Testing, Michael J. Douglas

Mechanical & Aerospace Engineering Theses & Dissertations

A static test method for modeling low-velocity foreign object impact events to composites would prove to be very beneficial to researchers since much more data can be obtained from a static test than from an impact test. In order to examine if this is feasible, a series of static indentation and low velocity impact tests were carried out and compared. Square specimens of many sizes and thicknesses were utilized to cover the array of types of low velocity impact events. Laminates with a rt/4 stacking sequence were employed since this is by far the most common type of engineering laminate. …


A Generic Object-Oriented Server Model, Brian Douglas Jones Apr 2000

A Generic Object-Oriented Server Model, Brian Douglas Jones

Electrical & Computer Engineering Theses & Dissertations

The purpose of this paper is to introduce a generic, object-oriented model for the simulation of networks of queues. Generic simulation modeling provides robust ways of laying out processes in stochastic, event driven simulations. The approach taken is to define a methodology that will be implementation independent, termed the Generic Server Simulation Model (GSSM); thus, leaving the implementers to choose the best (most suited for their use) means of implementation. GSSM uses many object-oriented concepts to provide its basic structure and has in its design the ability to take advantage of these object-oriented concepts, including reuse of (existing) code. GSSM …


The Technical And Economic Feasibility Of Constructing An Artificial Wetland For Burra-Burra Creek In Ducktown Tennessee, Ileana M. Speer Mar 2000

The Technical And Economic Feasibility Of Constructing An Artificial Wetland For Burra-Burra Creek In Ducktown Tennessee, Ileana M. Speer

Masters Theses and Doctoral Dissertations

The Copper Hill Basin area in Polk County, Tennessee has been severely impacted by more than a century of mining. The water found in the streams in this area is polluted with dissolved metals and sulfates. Burra-Burra Creek is one of the various waterways impacted and is located within the 130 km2 area of deserted mines in the Copper Basin. This stream is fed from runoff and mine seepage; the stream is acidic and the metal concentration is high in comparison to the concentrations in other streams in the immediate area. The use of constructed wetlands to treat acidic mine …