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Load-Based Energy Savings In Three-Phase Squirrel Cage Induction Motors, Subodh Chaudhari

Graduate Theses, Dissertations, and Problem Reports (ETD)

Energy is an extremely valuable resource which should be used carefully. After realizing this in the 1990's DOE started various energy efficiency measures in order to reduce the energy consumed by US industry. Motors use almost 50 percent of the electricity in the United States. If motor efficiency could be increased then energy consumption could be reduced. There have been efforts to increase motor efficiency over past decade which lead to development of premium efficiency motors. Designed motor efficiency is normally above 90 percent so motors do not waste energy. However, motor efficiency decreases when load factor is less than …

Channel Geomorphology Relationships For The Beaver Creek Watershed, Atif Hamid

Graduate Theses, Dissertations, and Problem Reports (ETD)

The proposed Appalachian Corridor H will be built through some of the most rugged terrain in West Virginia. The Corridor H section from Davis to Bismarck passes through the Beaver Creek watershed, located in Tucker County, West Virginia, which has been heavily affected by historic mining, deteriorating the water quality conditions of the Beaver Creek watershed. Due to the construction of Corridor H, some of the streams will be disturbed from their present courses. Hence, stream restoration work for these streams is inevitable. It is important to develop a family of stream geometry curves that relate the bankfull parameters as …

Parametric And Predictive Analysis Of Horizontal Well Configurations For Coalbed Methane Reservoirs In Appalachian Basin, Nikola Maricic

Graduate Theses, Dissertations, and Problem Reports (ETD)

It has been a well-established fact that the Appalachian Basin represents a high potential region for the Coalbed Methane (CBM) production. The thin coal beds in the Appalachian basin are characterized by low porosity and permeability values. Due to highly complex reservoir characteristics, different drilling techniques have been developed in order to improve ultimate gas recovery in the shortest possible time. It has been claimed that horizontal drilling is the optimum completion technique used in this region to maximize methane recovery from coalbed reservoirs.;Horizontal wells are considered to be effective in the relatively thin, naturally fractured reservoirs that are characterized …

Evaluation Of The Ductility Of Composite Steel I-Girders In Positive Bending, Nicholas R. Roberts

Graduate Theses, Dissertations, and Problem Reports (ETD)

Current AASHTO bridge specifications limit the allowable maximum strength of simple spans and positive bending regions with adjacent compact pier sections to a value between the full plastic moment and the hypothetical yield moment of the cross section. The equation used for this strength prediction is given as a linear function, related to the depth of web in compression. However, this method of strength prediction is based on a series of parametric studies from which the data did not suggest the values close to the yield moment that may be computed using the associated strength equations.;Recent experimental tests by others …

Network Requirements Definition And Management System, Kimberly S. Johnson

Masters Theses & Doctoral Dissertations

No abstract provided.

The Creation Of A Distance Learning Graduate Level Course In Legal And Ethical Aspects Of Technology, Wade M. Chumney

Masters Theses & Doctoral Dissertations

This goal of this project is to provide a quality graduate level distance learning course administered via WebCT that can be administered by a professor possessing a Juris Doctor. To accomplish this goal, two primary texts were selected: Ethics in Information Technology, by Reynolds, George (2003), published by Thomson Course Technology., ISBN: 0-619-06277-0 and CyberLaw: Text and Cases, 2nd edition, Ferrera, Gerald and Stephen Lichtenstein, and Margo Reder, and Robert Bird, and William Schiano (2004), published by Thomson (West Legal Studies in Business), ISBN: 0-324-16488-2. Additionally, a number of papers were written on issues pertinent to the class, several PowerPoint …

Recommender Systems For Multimedia Libraries: An Evaluation Of Different Models For Datamining Usage Data, Raquel Oliveira Araujo

Computer Science Theses & Dissertations

Many recommender systems exist today to help users deal with the large growth in the amount of information available in the Internet. Most of these recommender systems use collaborative filtering or content-based techniques to present new material that would be of interest to a user. While these methods have proven to be effective, they have not been designed specifically for multimedia collections. In this study we present a new method to find recommendations that is not dependent on traditional Information Retrieval (IR) methods and compare it to algorithms that do rely on traditional IR methods. We evaluated these algorithms using …

Modeling The Spread And Prevention Of Malicious Mobile Code Via Simulation Cs-2004-15, Christopher Brian Shirey

Theses and Dissertations

Malicious mobile code causes billions of dollars every year in damages, and that cost keeps increasing. Traditional signature-based anti-virus software is a reactive solution that can not detect fast spreading malicious code quickly enough to prevent widespread infection. If we hope to prevent widespread infection of future malicious mobile code, new prevention techniques must be developed that either stop a new infection completely, or at least limit the spread until signature-based anti-virus software can be updated. Simulators exist that model the spread of malicious mobile code, but none currently exists that can efficiently model host-based and network-based spread prevention techniques …

Analysis Of Hostile Network Reconnaissance To Anticipate And Mitigate Network Attacks, Luis Angel Rivera

Theses and Dissertations

Network security systems today such as current intrusion detection systems, intrusion prevention systems and firewalls are good at reacting to attacks as they occur or shortly after they occur. Current security systems lack the ability to identify and detect the activity that usually precedes an attack. This activity is known as network reconnaissance. In this thesis we have developed a technique that can assist current security systems to detect hostile network reconnaissance to anticipate and mitigate network attacks.

Thermodynamic Analysis Of Separation Systems, Yaşar Demirel

Papers in Thermal Mechanics

Separation systems mainly involve interfacial mass and heat transfer as well as mixing. Distillation is a major separation system by means of heat supplied from a higher temperature level at the reboiler and rejected in the condenser at a lower temperature level. Therefore, it resembles a heat engine producing a separation work with a rather low efficiency. Lost work (energy) in separation systems is due to irreversible processes of heat, mass transfer, and mixing, and is directly related to entropy production according to the Gouy-Stodola principle. In many separation systems of absorption, desorption, extraction, and membrane separation, the major irreversibility …

Algorithmic Estimation Of Pauses In Extended Speech Samples Of Dysarthric And Typical Speech, Jordan R. Green, David R. Beukelman, Laura J. Ball

Department of Special Education and Communication Disorders: Faculty Publications

The aim of this study was to evaluate the validity and performance of an algorithm designed to automatically extract pauses and speech timing information from connected speech samples. Speech samples were obtained from 10 people with amyotrophic lateral sclerosis (ALS) and 10 control speakers. Pauses were identified manually and algorithmically from digitally recorded recitations of a speech passage that was developed to improve the precision of pause boundary detection. The manual and algorithmic methods did not yield significantly different results. A stepwise analysis of three different pause detection parameters revealed that estimates of percent pause time were highly dependent on …

Load-Balanced Route Discovery For Mobile Ad Hoc Networks, Mehran Abolhasan, Justin Lipman, Tadeusz A. Wysocki

Department of Electrical and Computer Engineering: Faculty Publications (to 2015)

This paper presents Flow-Aware Routing Protocol (FARP), a new routing strategy designed to improve load balancing and scalability in mobile ad hoc networks. FARP is a hop-by-hop routing protocol, which introduces a flow-aware route discovery strategy to reduce the number of control overheads propagating through the network and distributes the flow of data through least congested nodes to balance the network traffic. FARP was implemented in Glomosim and compared with AODV. To investigate the load distribution capability of FARP new performance metrics were introduced to measure the data packet flow distribution capability of the each routing protocol. The simulation results …

A Study Of Umts Turbo Codes Across Space Time Spreading Channel With The Case Of M = 1 And M = 2, Ibrahim S. Raad, Peter Vial, Tadeusz A. Wysocki

Department of Electrical and Computer Engineering: Faculty Publications (to 2015)

The study presented in this paper is that of Universal Mobile Telecommunications Systems (UMTS) Turbo Codes across Space Time Spreading channel with one transmitter antenna, one receiver (m = 1) and two transmitter antennas and one receiver (m = 2) to see to what extent the bit error rate (BER) can be improved. Using the Max-log decoding algorithm and 12 iterations it is shown in the simulation results that an extra 5 dB is achievable.

A Template-Based Conceptual Modeling Infrastructure For Simulation Of Physical Security Systems, Ashu Guru, Paul Savory

Department of Industrial and Management Systems Engineering: Faculty Publications

Although simulation is one of the most innovative and cost-effective tools for modeling and analyzing a system, simulation studies often fail to provide any useful results. One reason is attributed to the fact that model formulation depends on the skills of the analyst. This paper describes a research to develop a conceptual modeling infrastructure to assist a simulation analyst in specifying components for studying physical security systems. The modeling framework has been programmed as an internet-based web application. Using the application, the successful development and implementation of a physical security simulation model will be aided by a defined scientific methodology …

Strengthening Of Masonry Structures With Frp Composites, J. Gustavo Tumialan, Francesco Micelli, Antonio Nanni

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Unreinforced masonry (URM) walls are prone to failure when subjected to out-of-plane and in-plane loads. the development of effective and affordable strengthening strategies is a need. in this context fiber reinforced polymer (FRP) materials offer viable solutions to solve or lessen the effects of overloading. This paper describes FRP systems proposed for use in the strengthening of masonry elements as well as the impact of such systems on the building being retrofitted. Also, field applications, some potential and others already implemented applications, are described. Field applications include strengthening for natural hazards (i.e. earthquakes and high wind pressures) as well as …

An Assessment Of In-Situ Frp Shear And Flexural Strengthening Of Reinforced Concrete Joists, Annaiah Raghu, John J. Myers, Antonio Nanni

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This study examines the in-situ shear performance and modes of failure of reinforced concrete (RC) T-beams (joists) strengthened with externally bonded carbon fiber reinforced polymer (CFRP) sheets. the experimental program consisted of testing a series of nine structural components at the Malcom Bliss Hospital, in St. Louis, Missouri. the members were tested to validate the different systems and techniques of strengthening. in particular, this paper covers cases of U-Wraps with and without end-anchors. the experimental results clearly indicate the contribution of externally bonded CFRP sheets in increasing the shear capacity of the system. the experimental and theoretical shear strength of …

Field Evaluation Of Unreinforced Masonry Walls Strengthened With Frp Composites Subjected To Out-Of-Plane Loading, Gustavo Tumialan, Davide Tinazzi, John J. Myers, Antonio Nanni

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Unreinforced masonry (URM) walls at a decommissioned building in St. Louis, Missouri were tested to failure. the walls belonging to the present experimental program were subjected to out-of-plane loading. Previous work on URM and reinforced masonry walls strengthened with FRP laminates has shown remarkable increases in capacity and ductility. However, most of this research has been conducted under laboratory conditions, where, many times, it is a difficult task to represent real field conditions. in this context, this experimental program offered a singular opportunity for performing field experimentation on URM walls strengthened with Glass, Aramid and Carbon Fiber Reinforced Polymers (GFRP, …

Distributed Data Mining Using Web Services., Vivek Mongolu 1977-

Electronic Theses and Dissertations

With the increasing computational power and the decreasing cost of high bandwidth networks resulted in Distibuted Systems. Distributed Data Mining is being used to analyze and monitor data in distributed systems. In the past, distributed technologies like Java RMI, CORBA were used for data mining but the result was a more tightly coupled system. Using web services a loosely coupled, interoperable distributed computing framework can be built. The topic of this thesis is to investigate the use of web service in distributed data mining. This thesis involves the design, development and implementation of distributed data mining using web services as …

Developing A Database For Genbank Information., Nathan Mann

Electronic Theses and Dissertations

The thesis project, Gene Database, was done to create a way for the bioinformatics research group at the University of Louisville to have access to GenBank EST information in the form of a database. This database allows for a programmable front end to be used to conduct further research with the use of EST information. The database backend used is Oracle and was populated through a custom Java program. The loader was created in lieu of using Oracle's SQL*Loader because of the limitations in SQL*Loader. Previous ways of accessing the GenBank information included downloading the compressed files and using them …

Land Rehabilitation And Maintenance Equipment Sources, Heidi Howard, Shannon Mcdowell, Amanda Breon, John A. Guretzky, Bradley Tadlock

Department of Agronomy and Horticulture: Faculty Publications

Military training can often be destructive to the environment. Environmental impacts associated with heavy training include soil compaction, soil erosion, siltation of waterways and wetlands, increased threat of flooding, loss of wildlife habitat, declining biodiversity, and invasion by noxious weeds. Planning and implementing land rehabilitation projects generally involves some soil movement, establishment of vegetation, stabilization and hardening of sites, etc. Procurement of appropriate heavy equipment and other specialized equipment is sometimes a difficult task that involves obtaining multiple vendors, especially when procuring equipment for rental, lease, or purchase. This report and associated database were created to help land managers easily …

Sources Of Plant Materials For Land Rehabilitation, Heidi Howard, John A. Guretzky, Brandy Koch, Shannon Mcdowell, Steven Warren, Gwyn L. Howard

Department of Agronomy and Horticulture: Faculty Publications

Military training often results in environmental degradation that has negative impacts on future training missions. The U.S. Army Construction Engineering Research Laboratory (CERL) conceptualized the Army’s Integrated Training Area Management (ITAM) program in response to the concerns expressed by military land managers and trainers over the declining condition of training and testing lands. ITAM has evolved to include land condition and trend analysis (LCTA), environmental awareness (EA), training requirements integration (TRI), and land rehabilitation and maintenance (LRAM). The need for LRAM has increased dramatically over the past decade. Among the many difficulties faced in planning and implementing a land rehabilitation …

Web Based Evaluation Of Material Handling Alternatives For Automated Manufacturing : A Parallel Replications Approach., John B. Casebier 1973-

Electronic Theses and Dissertations

This research project describes the application of a master/slave configuration of processors to study a comparison of alternative material handling configurations for automated manufacturing. Such a study usually requires a large number of simulation replications, and carrying out those replications on a multi-processor platform can yield a significant savings in elapsed time. The objective of this study is to develop such a platform. In the present application, a parallel replication simulation system is developed to foster simultaneous processing. This system utilizes two separate applications to facilitate communication between master and slave computers. Additionally, the "master" and "slave" or "client" applications …

Probing The Properties Of The Second Coordination Sphere Of Biologically Relevant Metal Complexes Using Amide Function., Lionel E. Cheruzel 1976-

Electronic Theses and Dissertations

This dissertation deals with various imidazole compounds with emphasis on hydrogen bond interactions and weaker intermolecular forces. New amide functionalized polyimidazole metal binding pockets are able to form intramolecular six-membered hydrogen bonded rings with apical ligands bonded to the metal. The design of such ligands has been successful in the stabilization and characterization of mononuclear Cu-OH and Cu-OOH species. The end-on Cu-OOH species was characterized by UV-visible(band at 365 nm with e = 1500 M-1cm-1), EPR, ESI-MS and Raman spectroscopy (vO-O = 854 cm-1 which shifts by 46 cm-1 upon 18O substitution). Simple imidazole ligands were synthesized by general Mannich-type …

The Characterization And Model Optimization Of An Analog Integrated Circuit Standard Cell Library., Mallika Gopinath 1977-

Electronic Theses and Dissertations

Since the beginning of the VLSI era, various technologies have been adopted for developing the design and characterization of analog circuits. For robust design, the influences of the process parameter variations have been considered over the circuit simulation. Previous studies in this field concentrated more on the physical dimensions such as the width, length, area and perimeter as well as the threshold voltage of the device. The focus of this thesis was to characterize the performance of an analog IC standard cell library as well as optimize the simulation models. The circuits include NMOS FETs (n-channel metal-oxide semiconductor field-effect transistor), …

Anomaly Based Intrusion Detection For Network Monitoring Using A Dynamic Honeypot., Jeff Hieb

Electronic Theses and Dissertations

This thesis proposes a network based intrusion detection approach using anomaly detection and achieving low configuration and maintenance costs. A honeypots is an emerging security tool that has several beneficial characteristics, one of which is that all traffic to it is anomalous. A dynamic honeypot reduces the configuration and maintenance costs of honeypot deployment. An anomaly based intrusion detection system with low configuration and maintenance costs can be constructed by simply observing the egress and ingress to a dynamic honeypot. This thesis explores the design and implementation of a dynamic honeypot using a variety of publicly available tools. The main …

Modeling Of Multi-Converter More Electric Ship Power Systems Using The Generalized State Space Averaging Method, Madan M. Jalla, Ali Emadi, Geoffrey A. Williamson, Babak Fahimi

Electrical and Computer Engineering Faculty Research & Creative Works

based on the more electric ship (MES) concept, conventional mechanical, hydraulic, and pneumatic power transfer systems are replaced by electrical systems in different sea vehicles. Considering different levels of power requirements of various electrical loads and for the achievement of compact, light, safe, and efficient power supplies, implementation of multi-converter power electronics-based power systems is the most feasible option in the development of advanced navy vehicles. This paper presents a modular approach for the modeling and simulation of multiconverter MES power systems based on the generalized state space averaging method. MES power systems may consist of many individual converters connected …

Real Time State Estimation Of Multi-Converter More Electric Ship Power Systems Using The Generalized State Space Averaging Method, Madan M. Jalla, Ali Emadi, Geoffrey A. Williamson, Babak Fahimi

Electrical and Computer Engineering Faculty Research & Creative Works

This paper presents a real time state estimation algorithm for control and security maintenance of multi-converter MES power electronic systems. Estimation of the state variables of the system includes the effects of ripples and converter switching actions. the proposed state estimator is based on the Weighted Least Squares (WLS) approach. Generalized state space averaging technique in which we consider the DC value of the state variables, and their harmonics is used to model DC/DC converters for the state estimator. in this paper, after introducing the proposed approach and the concept of security and control assessments, results of applying the proposed …

Turbulent Augmentation Of Heat Transfer Off Pin And Endwall Surfaces In A Staggered Pin Fin Array, Lindsay A. Dvorak

Theses and Dissertations

Pin fin arrays are one of the more common internal cooling features in many turbine vanes and blades. Pin fins increase turbulence of passage flow and internal heat transfer surface area. Most pin fin array designs use empirical correlations to predict heat transfer rates and pressure drop. Previous research suggests computational models for heat transfer and velocity distribution predictions can be improved if the characteristics of turbulence and its response near surfaces such as pins and endwalls are known. Detailed heat transfer and turbulence data are needed to investigate why current turbulence models fail. Improvements can be made by introducing …

Multiobjective Optimization Of Seismic Structures, Franklin Y. Cheng, Dan Li, Jeffrey Ger

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This paper presents a constrained Mult objective optimization method in the form of a robust, practical, problem-independent formulation based on genetic algorithm combined with game theory and investigates the effect of Mult objective optimization on structural design. the study includes objectives, constraints, and design variables as well as their effect on structural design and behavior. the algorithm comprises - Mult objective fitness function, niche method, and Pareto set filter. a 10-story setback building is used to illustrate the evaluation of three choices: steel frame, reinforced concrete frame, composite steel and reinforced concrete frame. Evaluation is based on economics as well …

Hybrid Or Counterpoise? A Study Of Transitional Trebuchets, Michael J. Basista

Masters Theses

This study investigates the engineering and use of a proposed type of trebuchet in the Middle Ages. A study by a prominent historian has suggested the existence of a type of siege weapon that made use of both human and gravitational forces to fire its projectile. My research will investigate this claim by examining select sources, reviewing the engineering principles involved, and determining the viability of such a machine.

After dealing with this theory I will offer my own new interpretation made from the sources. This interpretation will center on the application of ancient technology to make trebuchets more efficient. …