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Articles 16501 - 16530 of 18357
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Emergency Power Systems With Photovoltaics: Course Manual, Florida Solar Energy Center, William Young
Emergency Power Systems With Photovoltaics: Course Manual, Florida Solar Energy Center, William Young
FSEC Energy Research Center®
This workshop training manual provides information for disaster relief and emergency management organization on using photovoltaic systems to supply electrical power for their every day operation in a disaster. The general public and the PV industry will also benefit from this information. Topics presented in the workshop manual will include emergency management operations, energy needs analysis, photovoltaic technology, system performance, reliability, maintenance, selection criteria, applications, and equipment specifications.
Hierarchical Interactive Theater Model (Hitm): An Investigation Into The Relationship Between Strategic Effects And Ooda Loops, Richard K. Bullock
Hierarchical Interactive Theater Model (Hitm): An Investigation Into The Relationship Between Strategic Effects And Ooda Loops, Richard K. Bullock
Theses and Dissertations
Airpower's strength lies in being able to quickly strike the enemy directly where they are vulnerable while being unhampered by geography and surface forces. Airpower theory suggests the effects of these strikes propagate throughout an opponent1s military system yielding catastrophic output or strategic effects. Despite this theory being a cornerstone of US Air Force doctrine, current Air Force models do not seem to capture airpower's inherent strength. Since these models are used to support budgetary decision making, the United States may not be funding the airpower capability it needs.
Design And Validation Of An Accurate Gps Signal And Receiver Truth Model For Comparing Advanced Receiver Processing Techniques, Phillip Martin Corbell
Design And Validation Of An Accurate Gps Signal And Receiver Truth Model For Comparing Advanced Receiver Processing Techniques, Phillip Martin Corbell
Theses and Dissertations
Recent increases in the computational power of computers and digital signal processors have made possible new, novel signal tracking techniques in GPS receivers. One such technique is known as Direct Correlators Output Processing (DCOP). This technique replaces individual traditional tracking loops with a single Kalman Filter, which jointly processes the received signals while exploiting their correlated noises. DCOP is innovative in its potential to replace the tried and true classical signal tracking loops. It is also an enabling technology for ultra-tightly coupled GPS/INS (Global Positioning System/Inertial Navigation System). Potential benefits of these new tracking techniques include an order-of-magnitude improvement in …
Feature Selection For Predicting Pilot Mental Workload, Julia A. East
Feature Selection For Predicting Pilot Mental Workload, Julia A. East
Theses and Dissertations
Advances in technology have the cockpits of the aircraft in the Air Force inventory increasingly complex. Consequently, mental demands on the pilot have risen. In some cases, mental demands were so overwhelming that pilots have forgotten basic flying techniques, such as G-straining maneuvers. The results have been fatal. Recent research in this area has involved collecting psychophysiological features, such as electroencephalography (EEG), heart, eye and respiration measures, in an attempt to identify pilot mental workload. This thesis focuses on feature selection and reduction of the psycophysiological features and subsequent classification of pilot mental workload on multiple subjects over multiple days. …
Using Simulation To Model An Army Recruiting Station With Seasonality Effects, David C. Longhorn
Using Simulation To Model An Army Recruiting Station With Seasonality Effects, David C. Longhorn
Theses and Dissertations
One of the toughest jobs in the Army is that of the recruiter. Recruiters are tasked with the awesome job of convincing young men and women to lay down their lives and freedoms for their country, and oftentimes for less money than can be earned in the safer environment of America's booming economy. Recruiters face enormous pressure from commanders to meet the mandated Army manning levels set each year by Congress. As the Army begins the 21st century, it is faced with having to support an increasing number of deployments with fewer soldiers. Soldiers face long and difficult days with …
Toxicity Of Tolyltriazole To Gram-Positive Coccus Microorganisms, Heather L. Mitchell
Toxicity Of Tolyltriazole To Gram-Positive Coccus Microorganisms, Heather L. Mitchell
Theses and Dissertations
Maintaining safe flight operations, military and civilian, in cold weather requires the use of de-icing fluids. Glycols, the primary component of de-icers, have been extensively studied. Water and additives such as corrosion inhibitors and other performance enhancing chemicals make up the remaining portion of de-icing fluids. Little research has been conducted on the additives, but several are suspected toxins to microorganisms, therefore the EPA regulates the disposal of spent de-icing fluids. Tolyltriazole, a corrosion inhibitor found in de-icing fluids, is a suspected human carcinogen. It is also known to be moderately toxic to microorganisms based on Microtox results. The purpose …
Simulations Of Flowing Supercritical N-Decane, Jeffery T. Thornburg
Simulations Of Flowing Supercritical N-Decane, Jeffery T. Thornburg
Theses and Dissertations
The Air Force is interested in the research of supercritical jet and rocket fuels, as well as the effects of thermally induced fuel degradation. As future flight vehicles travel at ever increasing Mach numbers, greater heat loads will be imposed upon the fuel. The primary purpose of this study is to develop a computational model for predicting fuel decomposition and bulk fuel temperatures in a stimulated heated flow reactor. The System for Thermal Diagnostic Studies (STDS), located in the Air Force Research Laboratory's Fuels Branch, is used to analyze fuels under supercritical temperatures and pressures. Computational simulations of the STDS …
A Comparative Analysis Of Cockpit Display Development Tools, Matthew J. Gebhardt
A Comparative Analysis Of Cockpit Display Development Tools, Matthew J. Gebhardt
Theses and Dissertations
Currently, no standard methodology exists that enables cockpit display engineers to evaluate software tools used in the development of graphical cockpit displays. Furthermore, little research has been accomplished in comparing current software development tools with traditional hand-coded methods, This research effort discusses a framework for analyzing cockpit display software development tools and follows through with a detailed analysis comparing today's hand-coding standard, OpenGL, with two of today's cockpit display software development suites, Virtual Application Prototyping System (VAPS) and Display Editor. The comparison exploits the analysis framework establishing the advantages and disadvantages of the three software development suites. The analysis framework …
Attitude Control And Multimedia Representation Of Air Force Institute Of Technology’S (Afit’S) Simulation Satellite (Simsat), Joseph M. Fulton
Attitude Control And Multimedia Representation Of Air Force Institute Of Technology’S (Afit’S) Simulation Satellite (Simsat), Joseph M. Fulton
Theses and Dissertations
This document describes the systematic construction of the AFIT-sponsored program to develop a laboratory-based satellite simulator. The simulation satellite (SIMSAT) system will provide a useful tool for resident staff while teaching attitude control concepts. A brief overview of attitude control theory is provided as well as a discussion of the benefits of multimedia use in education. A detailed discussion of the satellite's components allows the reader to become familiar with each piece of SIMSAT. Software control models are provided as well as a multimedia lesson plan on satellite attitude control. Also included in this document are potential experimental uses in …
Managing Temporal Data In A Comprehensive Modeling Environment, Norman L. Jones, E. James Nelson, Colby T. Manwaring
Managing Temporal Data In A Comprehensive Modeling Environment, Norman L. Jones, E. James Nelson, Colby T. Manwaring
Faculty Publications
Numerous graphical pre- and post-processors have been developed for numerical modeling. Many of these systems support numerical models that can be used for both steady state and transient simulations. Dealing with transient data can be particularly difficult in such an environment due to the differing time scales and units associated with transient field data and boundary conditions. A data model and a set of functions are presented in this paper as a simple, yet powerful strategy for managing temporal data in a comprehensive modeling environment. The strategy makes it possible to seamlessly integrate multiple types of transient data and convert …
Sharp: Sharp Hypersonic Aerothermal Research Probe, Sean Dougherty
Sharp: Sharp Hypersonic Aerothermal Research Probe, Sean Dougherty
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Sean Dougherty titled "SHARP: Sharp Hypersonic Aerothermal Research Probe" from February 25, 2000.
Micro-Ct Image-Derived Metrics Quantify Arterial Wall Distensibility Reduction In A Rat Model Of Pulmonary Hypertension, Roger H. Johnson, Kelly L. Karau, Robert C. Molthen, Steven Thomas Haworth, Christopher A. Dawson
Micro-Ct Image-Derived Metrics Quantify Arterial Wall Distensibility Reduction In A Rat Model Of Pulmonary Hypertension, Roger H. Johnson, Kelly L. Karau, Robert C. Molthen, Steven Thomas Haworth, Christopher A. Dawson
Biomedical Engineering Faculty Research and Publications
We developed methods to quantify arterial structural and mechanical properties in excised rat lungs and applied them to investigate the distensibility decrease accompanying chronic hypoxia-induced pulmonary hypertension. Lungs of control and hypertensive (three weeks 11% O2) animals were excised and a contrast agent introduced before micro-CT imaging with a special purpose scanner. For each lung, four 3D image data sets were obtained, each at a different intra-arterial contrast agent pressure. Vessel segment diameters and lengths were measured at all levels in the arterial tree hierarchy, and these data used to generate features sensitive to distensibility changes. Results indicate …
Collaborative Distance Education In Power Engineering, Anil Pahwa, Shelli K. Starrett, Kraig J. Olejniczak, S. D. Sudhoff, Mariesa Crow
Collaborative Distance Education In Power Engineering, Anil Pahwa, Shelli K. Starrett, Kraig J. Olejniczak, S. D. Sudhoff, Mariesa Crow
Electrical and Computer Engineering Faculty Research & Creative Works
This paper presents a perspective on offering "shared-courses," or courses simultaneously offered at two or more universities via various distance educational frameworks. Over a three year duration, two senior/graduate level courses were jointly developed and offered to the students at the University of Missouri--Rolla, the University of Arkansas, Kansas State University, and Purdue University. This paper discusses the various distance educational technologies including two-way audio/visual via ISDN line, video-tapes, and web-based conferencing. Both instructor and student reactions to these mediums are included. Pedagogical methods appropriate for these mediums are outlined. The paper concludes with recommendations and strategies for engineering institutions …
In-Line Measurement Of Solibility Of Physical Blowing Agents In Thermoplastic Melts As Related To Extrusion Foaming, Qiang Zhang
In-Line Measurement Of Solibility Of Physical Blowing Agents In Thermoplastic Melts As Related To Extrusion Foaming, Qiang Zhang
Dissertations
A novel in-line method for measuring physical blowing agent solubility in thermoplastic melts in extrusion foaming equipment has been developed in this study. This method uses video microscopy in connection with a foaming extruder (single or twin-screw) to generate solubility data by observing the onset of gas bubble formation/dissolution. This method offers a number of advantages over the existing conventional methods. It can be easily used to obtain solubility data for many foamable thermoplastic-physical blowing agent systems at high pressure and temperature near actual foaming conditions. Data generated using this method could be directly used to characterize and control a …
Finite Fraction Method For Tracking Desinfection By-Product Precursors In Water Treatment, Doanh Van
Finite Fraction Method For Tracking Desinfection By-Product Precursors In Water Treatment, Doanh Van
Dissertations
Dissolved Organic Matter (DOM) has been the subject of recent regulatory activities and agenda. Among them are the Infonnation Collection Rule (ICR), the Disinfectants/Disinfection By-Product Rule (D/DBPR) and the Interim Enhanced Surface Water Treatment Rule (ESWTR). Both the latter two have provisions to limit the formation of disinfection by-products (DBP) by controlling reactivity and removal of DOM or both. Brief regulatory review of these rules was given.
Although the topic of DBP formation potential and DBP precursor removal have been studied by many researchers since Rooks (1974), the efficacy of methods that have been developed to date has been handicapped …
Intelligent Process For Uasb Reactors, Sita Mohan
Intelligent Process For Uasb Reactors, Sita Mohan
Theses
The Upflow Anaerobic Sludge Blanket (UASB) reactor is widely used for the anaerobic treatment of concentrated municipal / industrial wastewaters and sludges. Ability to handle high organic loading rates and cost effectiveness are often the most cited merits of the UASB process. Numerous mathematical models have been developed to describe the process and mechanistic phenomena in these systems. However, evidence in the literature of these models having been applied, either as control or diagnostic tools is limited. The use of intelligent process control mechanisms can greatly ease problems associated with operating these reactor systems.
The objective of this study is …
Late Deflation Study : Hemodynamic Effects Of Iab Timing In Humans, Manal Morcos
Late Deflation Study : Hemodynamic Effects Of Iab Timing In Humans, Manal Morcos
Theses
Conventional IABP timing deflates 100% of the balloon volume before the onset of left ventricular ejection and has been well established in the literature as a safe and effective method. Yet, recent studies suggest that deflation of the IAB at or near the onset of systole improve myocardial efficiency (Kern, 1999, 1129). To test whether deflation of the JAB at a later deflation time reduces left ventricular workload and enhances coronary perfusion, four timing methods were evaluated in 20 patients: T1 (100% JAB volume deflated before onset of ejection), T2 (60% IAB volume deflated before and 40% volume …
Development And Testing Of A Simulated Closed Loop Drug Delivery System For Chf Patients Under Milrinone Administration, Runa Shah
Theses
The purpose of this thesis project is the development and testing of a simulated closed loop drug delivery (CLDD) system that consists of a pharmacokinetic, physiological, and feedback-controlling model. The focus of this study is on the control of milrinone inflision to maintain cardiac output at desired setpoint range for patients suffering from congestive heart failure (CHF). The simulated CLDD system is written in VisSim dynamic simulation language for an IBM-compatible PC.
Milrinone pharmacokinetics are represented by a three compartment model. The physiological model consists of the cardiovascular system model linked to the pharmacodynamic submodel of milrinone. The feedback-controlling model …
A Study Of Sound Attenuation Using Sonic Energy Focussed At An Artificial Soil Fracture, Minhaz Bootwala
A Study Of Sound Attenuation Using Sonic Energy Focussed At An Artificial Soil Fracture, Minhaz Bootwala
Theses
Several laws have been passed over the past two decades to control contamination and to remediate already existing contaminated sites. There are a large number of these sites and several ex-situ and in-situ techniques have been developed to decontaminate these sites. These techniques can be quite expensive, especially the ex-situ clean-up operations, and there has always been a need for cheap, quick remediation methods.
This study investigates the attenuation of sound used in the in situ remediation technique coupling Sonic Energy with Pneumatic Fracturing and Vapor Extraction. Preliminary attenuation studies were performed in the laboratory with a microphone made at …
Evaluation Of Anti-Fouling Paints, Charles M. Burt
Evaluation Of Anti-Fouling Paints, Charles M. Burt
BioResource and Agricultural Engineering
Algae and other growth on Replogle flumes, often used as flow measurement devices in irrigation canals, can effect the accuracy of measurements in those canals. Research was conducted to find a product that would prevent buildup on the flumes. Hard anti-fouling paint, designed to be applied to concrete rather than fiberglass, wood, steel or iron, was the type of paint used in this study.
Impulse, Dave Graves, Rod Thormodsgaard, Lisa Schaefer
Impulse, Dave Graves, Rod Thormodsgaard, Lisa Schaefer
Impulse (Jerome J. Lohr College of Engineering Publication)
Features:
[Page] 2 'The best time I ever had'
[Page] 3 Students get early start on research
[Page] 4 Civil engineering student chapter makes an impact
[Page] 5 The man behind the medals
[Page] 6 LaRocque learns that hard work pays
[Page] 7 Scholarships reward Native American students
[Page] 8 Saving energy, saving S
[Page] 10 Sparking an interest in science
[Page] 11 Generating excitement about working in the sky
Students:
[Page] 12 Pocket Gopher buries the competition
[Page] 14 You're never too old
[Page] 15 One test = eight hours
[Page] 16 Making big gains
[Page] 18 Joint Engineering …
Final Environmental Assessment Ponca State Park Resource And Education Center
Final Environmental Assessment Ponca State Park Resource And Education Center
United States Army Corps of Engineers, Omaha District
An environmental assessment has been prepared that summarizes the expected effects of the proposed project on the existing environment. The Omaha District, Corps of Engineers in partnership with the Nebraska Game and Parks Commission, proposes to construct a research and education center (REC) at Ponca State Park in Dixon County, Nebraska. The proposed project would consist of the construction ofa 15,000 square foot REC building, a constructed treatment wetland to handle the waste from the REC building, a 1.5 acre lake that would receive used water from the heat pump system, a system of geothermal wells for use as part …
Freshwater Mussels Of The Missouri National Recreational River Below Gavins Point Dam, South Dakota And Nebraska, Keith Perkins Iii, Douglas C. Backlund
Freshwater Mussels Of The Missouri National Recreational River Below Gavins Point Dam, South Dakota And Nebraska, Keith Perkins Iii, Douglas C. Backlund
United States Army Corps of Engineers, Omaha District
In 1999 the U.S. Army Corps of Engineers contracted with the South Dakota Department of Game, Fish and Parks to conduct a presence/absence survey of the freshwater mussels of the Missouri National Recreational River below Gavins Point Dam, South Dakota and Nebraska. Subsequently, S.D. Department of Game, Fish and Parks contracted Keith Perkins III, a malacological expert at the University of Sioux Falls, to take charge of the inventory with the assistance of Doug Backlund, South Dakota Department of Game, Fish and Parks, Pierre, S.D.
Development Of Vaccines For Prevention Of Botulism, Michael P. Byrne, Leonard A. Smith
Development Of Vaccines For Prevention Of Botulism, Michael P. Byrne, Leonard A. Smith
United States Army: Publications
Botulism is a potentially lethal disease caused by one of seven homologous neurotoxic proteins usually produced by the bacterium, Clostridium botulinum. This neuromuscular disorder occurs through an exquisite series of molecular events, ultimately ending with the arrest of acetylcholine release and hence, flaccid paralysis. The development of vaccines that protect against botulism dates back to the 1940s. Currently, a pentavalent vaccine that protects against BoNT serotypes A-E and a separate monovalent vaccine that protects against BoNT serotype F are available as Investigational New Drugs. However, due to the numerous shortcomings associated with the toxoid vaccines, several groups have efforts …
Development Of A Functional Basis For Design, Robert B. Stone, Kristin L. Wood
Development Of A Functional Basis For Design, Robert B. Stone, Kristin L. Wood
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Functional models represent a form independent blueprint of a product. As with any blueprint or schematic, a consistent language or coding system is required to ensure others can read it. This paper introduces such a design language, called a functional basis, where product function is characterized in a verb-object (function-flow) format. The set of functions and flows is intended to comprehensively describe the mechanical design space. Clear definitions are provided for each function and flow. The functional basis is compared to previous functional representations and is shown to subsume these attempts as well as offer a more consistent classification scheme. …
Kentucky Water Resources Research Institute Annual Technical Report Fy 1999, Kentucky Water Resources Research Institute, University Of Kentucky
Kentucky Water Resources Research Institute Annual Technical Report Fy 1999, Kentucky Water Resources Research Institute, University Of Kentucky
KWRRI Annual Technical Reports (USGS’s 104b Grant Program)
The FY 1999 Annual Technical Report for Kentucky consolidates the reporting requirements of the Section 104(b) base grant and regional competitive grant awards in a single technical report which includes: 1) a synopsis of each ongoing research project and each research project completed during the period, 2) a list of related reports published, 3) a brief description of information transfer activities, 4) a summary of student support during the reporting period, and 5) notable achievements and awards during the year. The activities supported by Section 104 (b) and the required matching funds are interwoven into the Kentucky Water Resources ResearchInsitute's …
Effect Of Antioxidants On Ultra High Molecular Weight Polyethylene (Uhmwpe), Clifford Schrader
Effect Of Antioxidants On Ultra High Molecular Weight Polyethylene (Uhmwpe), Clifford Schrader
Masters Theses
This thesis presents a study on the effects of antioxidants on the oxidative induction time (OIT), thermal behavior, and hardness property of ultra high molecular weight polyethylene (UHMWPE). The antioxidants were dissolved into methanol alcohol before the solution was mixed with UHMWPE powder. The mixture was degassed under vacuum, and then compression-molded into disks 1.25 in. in diameter.
Different antioxidants were evaluated at concentrations up to 0.6 percent. A 0.6 percent concentration was used to screen the effectiveness of various antioxidants. Effect of antioxidant concentration was investigated in the range between 0 and 0.6 percent. OIT was evaluated on UHMWPE …
Nonlinear Self-Organization In Photorefractive Materials, Partha P. Banerjee, Nickolai Kukhtarev, John O. Dimmock
Nonlinear Self-Organization In Photorefractive Materials, Partha P. Banerjee, Nickolai Kukhtarev, John O. Dimmock
Electrical and Computer Engineering Faculty Publications
This chapter discusses self-organization and its effects in optics. One of the most exciting and potentially useful areas of current research in optics involves the understanding and exploitation of self-organization in nonlinear optical systems. This self-organization may sometimes lead to the evolution of complex spatial patterns that can be regarded as the nonlinear eigenmodes of the system. Generation of these patterns is characteristically marked by the presence of intensity thresholds. In a nonlinear system with complicated temporal dynamics, it turns out that one cannot retain purity in spatial dimensionality. It is therefore equally important to investigate the dynamics of the …
Kentucky Traffic Collision Facts 2000 Report, Kentucky Transportation Center, Kentucky State Police
Kentucky Traffic Collision Facts 2000 Report, Kentucky Transportation Center, Kentucky State Police
Kentucky Transportation Center Research Report
KENTUCKY’S TRAFFIC COLLISION FACTS report for 2000 is based on collision reports submitted to the Kentucky State Police Records Branch. As required by Kentucky Revised statutes 189.635, “every law enforcement agency whose officers investigate a vehicle accident of which a report must be made...shall file a report of the accident...within ten days after investigation of the accident upon forms supplied by the bureau.” The stated purpose of this requirement is to utilize data on traffic collisions for such purposes as will improve the traffic safety program in the Commonwealth.” Data contained in this report are based solely on the observations …