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2004

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Analytically Calibrated Box-Cox Percentile Limits For Duration And Event-Time Models, Zhenlin Yang, Albert K.C. Tsui Dec 2004

Analytically Calibrated Box-Cox Percentile Limits For Duration And Event-Time Models, Zhenlin Yang, Albert K.C. Tsui

Research Collection School Of Economics

This paper proposes a unified approach to constructing confidence limits for a future percentile duration or event-time. The construction is based on an analytical calibration of the Box-Cox-type “plug-in” percentile limits (PL). The performance of the calibrated Box-Cox PL is investigated using Monte Carlo experiments. Comparisons are made with PLs that are specifically designed for a particular distribution such as Weibull and lognormal. Excellent performances of the calibrated Box-Cox PL are observed. Simulation based on other popular duration models such as gamma and inverse Gaussian reveal that the proposed PL is robust against distributional assumptions and that it performs much …

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Vertical Sensitivity For The Information Security Health Rating Of Enterprises, Arcot Desai Narasimhalu, Nagarajan Dayasindhu, Raghavan Subramanian Dec 2004

Vertical Sensitivity For The Information Security Health Rating Of Enterprises, Arcot Desai Narasimhalu, Nagarajan Dayasindhu, Raghavan Subramanian

Research Collection School Of Computing and Information Systems

INFOSeMM Maturity model was developed jointly by SMU and Infosys. It is recognized that different industry verticals will have different levels of recommended maturity levels. This paper articulates the need for developing the industry vertical benchmarks.

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Unconformities And Age Relationships, Tongue River And Older Members Of The Fort Union Formation (Paleocene), Western Williston Basin, U.S.A., Edward S. Belt, Joseph H. Hartman, John A. Diemer, Timothy J. Kroeger, Neil E. Tibert, H. Allen Curran Dec 2004

Unconformities And Age Relationships, Tongue River And Older Members Of The Fort Union Formation (Paleocene), Western Williston Basin, U.S.A., Edward S. Belt, Joseph H. Hartman, John A. Diemer, Timothy J. Kroeger, Neil E. Tibert, H. Allen Curran

Geosciences: Faculty Publications

An unconformable relationship is observed within the Paleocene Fort Union Formation in the western Williston Basin at the contact between the Tongue River Member and the underlying Lebo and Ludlow Members. Isotopic dates and pollen biozone data reported here are integrated with previously published data. A new correlation of these facies results in a revised history of localized depositional and tectonic events. One unconformity occurs at this lithological contact in the Pine Hills (PH), Terry Badlands (TB), and Ekalaka (E) areas west of the Cedar Creek anticline (CCA), and another unconformity occurs at the same lithological contact in the Little …

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Measurement Of Handle Forces For Crimping Connectors And Cutting Cable In The Electric Power Industry, Richard W. Marklin, Lia Lazuardi, Jeremy R. Wilzbacher Dec 2004

Measurement Of Handle Forces For Crimping Connectors And Cutting Cable In The Electric Power Industry, Richard W. Marklin, Lia Lazuardi, Jeremy R. Wilzbacher

Mechanical Engineering Faculty Research and Publications

Overhead and underground line work in the electric power industry is physically very strenuous and can expose workers to musculoskeletal disorders (MSDs), particularly in the upper extremity. Crimping compression connectors—such as sleeve connectors and lugs—and cutting cables are two of the most frequent tasks that line workers perform. Line workers at many utilities in the US crimp connectors and cut cable with long-handled manual tools. However, the actual magnitude of the forces applied to the handles of these tools is not known. The objectives of this laboratory study were to measure the forces applied to the handles of a manual …

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Evolution Of Cyberspace As A Landscape In Cyberpunk Novels, Heather Holloway Dec 2004

Evolution Of Cyberspace As A Landscape In Cyberpunk Novels, Heather Holloway

College of Graduate Studies: Theses & Dissertations

Millions of people enter cyberspace on some level daily. This new technology has infiltrated society rapidly since the first computers were networked. Interestingly, cyberpunk, a sub-genre of science fiction, depicted cyberspace many years before mainstream society had ever conceived of it. This thesis explores the changes in science fictional representations of cyberspace by examining William Gibson's Neuromancer and Neal Stephenson's Snow crash. In this work I contrast the metaphysical, found nature of the first cyberpunk representation of cyberspace with the homogenized, commodified reality of the last cyberpunk representation.

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Effectiveness Of Treatment And Diversity Of Microbial Populations Within A Constructed Wetland Treating Wastewater, Jolene M. Friedland Dec 2004

Effectiveness Of Treatment And Diversity Of Microbial Populations Within A Constructed Wetland Treating Wastewater, Jolene M. Friedland

Graduate Theses, Dissertations, and Problem Reports (ETD)

Constructed wetlands are used as alternative on-site wastewater treatment systems. Microbiological dynamics in constructed wetlands are essential to adequate functioning and efficiency of these systems. The efficacy of wastewater treatment by a large subsurface flow wetland receiving wastewater from a multi-user facility was examined. Real-time monitoring with telemetry was combined with measurement of standard wastewater parameters such as biochemical oxygen demand (BOD5), total suspended solids (TSS), and enumeration of fecal coliforms. Passage of wastewater through the wetland significantly reduced standard wastewater parameters in effluent samples. Heterotrophic bacterial diversity was examined using community level physiological profiling (CLPP) and molecular characterization of …

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Structure And Dynamics Of Interfaces In The Epitaxial Growth And Erosion On (110) And (100) Crystal Surfaces, Artem Levandovsky Dec 2004

Structure And Dynamics Of Interfaces In The Epitaxial Growth And Erosion On (110) And (100) Crystal Surfaces, Artem Levandovsky

Graduate Theses, Dissertations, and Problem Reports (ETD)

We present unified theory of the far-from-equilibrium interfacial phenomena occurring in the multilayer homoepitaxial growth and erosion on (110) and (100) crystal surfaces. Within a unified model, here we elucidate the multitude of novel states on (110) and (100) surfaces as well as the transitions between them. In particular, by analytic arguments and numerical simulations, we address experimentally observed transitions between two types of rippled states on (110) surfaces. We discuss several intermediary interface states intervening, via consecutive transitions, between the two rippled states. One of the intermediary interface states, the Rhomboidal Pyramid State, was theoretically anticipated by us and …

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Impact Of Langmuir Isotherm On Production Behavior Of Cbm Reservoirs, Efundem Ndipanquang Arrey Dec 2004

Impact Of Langmuir Isotherm On Production Behavior Of Cbm Reservoirs, Efundem Ndipanquang Arrey

Graduate Theses, Dissertations, and Problem Reports (ETD)

Coalbed Methane is an unconventional gas resource that consists of methane production from the coal seams. CBM reservoir performance is also influenced by the interrelationship of reservoir, geologic, and operation parameters. Coalbed methane production performance is considered complex and difficult to analyze especially at the early stages of recovery.;This study was conducted to develop type curves which predict the impact of Langmuir Isotherms on production behavior on a Coalbed Methane reservoir in order to evaluate the economic feasibility and to maximize potential recovery. In order to achieve this objective, the impact of Langmuir isotherm constant on production type curves was …

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Load-Based Energy Savings In Three-Phase Squirrel Cage Induction Motors, Subodh Chaudhari Dec 2004

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 …

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Channel Geomorphology Relationships For The Beaver Creek Watershed, Atif Hamid Dec 2004

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 …

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Parametric And Predictive Analysis Of Horizontal Well Configurations For Coalbed Methane Reservoirs In Appalachian Basin, Nikola Maricic Dec 2004

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 …

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Evaluation Of The Ductility Of Composite Steel I-Girders In Positive Bending, Nicholas R. Roberts Dec 2004

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 …

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Network Requirements Definition And Management System, Kimberly S. Johnson Dec 2004

Network Requirements Definition And Management System, Kimberly S. Johnson

Masters Theses & Doctoral Dissertations

No abstract provided.

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The Creation Of A Distance Learning Graduate Level Course In Legal And Ethical Aspects Of Technology, Wade M. Chumney Dec 2004

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 …

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Recommender Systems For Multimedia Libraries: An Evaluation Of Different Models For Datamining Usage Data, Raquel Oliveira Araujo Dec 2004

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 …

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

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 …

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Analysis Of Hostile Network Reconnaissance To Anticipate And Mitigate Network Attacks, Luis Angel Rivera Dec 2004

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.

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Thermodynamic Analysis Of Separation Systems, Yaşar Demirel Dec 2004

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 …

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Algorithmic Estimation Of Pauses In Extended Speech Samples Of Dysarthric And Typical Speech, Jordan R. Green, David R. Beukelman, Laura J. Ball Dec 2004

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 …

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Load-Balanced Route Discovery For Mobile Ad Hoc Networks, Mehran Abolhasan, Justin Lipman, Tadeusz A. Wysocki Dec 2004

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 …

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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 Dec 2004

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.

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A Template-Based Conceptual Modeling Infrastructure For Simulation Of Physical Security Systems, Ashu Guru, Paul Savory Dec 2004

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 …

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Strengthening Of Masonry Structures With Frp Composites, J. Gustavo Tumialan, Francesco Micelli, Antonio Nanni Dec 2004

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 …

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An Assessment Of In-Situ Frp Shear And Flexural Strengthening Of Reinforced Concrete Joists, Annaiah Raghu, John J. Myers, Antonio Nanni Dec 2004

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 …

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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 Dec 2004

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, …

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Transitioning From Graduate Nurse To Professional Nurse, Jan M. Kamphuis Dec 2004

Transitioning From Graduate Nurse To Professional Nurse, Jan M. Kamphuis

Theses and Dissertations

Just as the world is facing many changes and transitions, nursing care delivery systems and nursing education systems continue to struggle with significant transitions in nursing practice. New, or novice nurses, find it increasingly difficult to transition from the role of the graduate nurse to professional nurse. It is, therefore, not surprising that the most stressful time during a nurse's career is the first three months of initial employment or that 35% to 60% of nurse graduates change jobs during the first year of employment. Many of these new nurses suffer from early disillusionment with the profession and often leave …

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Distributed Data Mining Using Web Services., Vivek Mongolu 1977- Dec 2004

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 …

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Developing A Database For Genbank Information., Nathan Mann Dec 2004

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 …

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Land Rehabilitation And Maintenance Equipment Sources, Heidi Howard, Shannon Mcdowell, Amanda Breon, John A. Guretzky, Bradley Tadlock Dec 2004

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 …

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Sources Of Plant Materials For Land Rehabilitation, Heidi Howard, John A. Guretzky, Brandy Koch, Shannon Mcdowell, Steven Warren, Gwyn L. Howard Dec 2004

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 …

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