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Long-Term Bandwidth Estimation, Brian E. Masney
Long-Term Bandwidth Estimation, Brian E. Masney
Graduate Theses, Dissertations, and Problem Reports (ETD)
Computer networks are connected with other networks using one or more dedicated circuits. These dedicated circuits have a finite amount of available bandwidth to transport the data. There is a need to predict the future utilization of these circuits so that additional capacity can be added before the circuit becomes saturated. Once the circuit becomes saturated, network packets will be discarded resulting in a poor end-user experience. It typically takes several weeks or, in some cases, several months for an order of additional capacity to be installed. A network planner should, therefore, know in advance when additional capacity will be …
The Growth And Characterization Of Gallium Nitride Quantum Dots., Nanying Yang
The Growth And Characterization Of Gallium Nitride Quantum Dots., Nanying Yang
Graduate Theses, Dissertations, and Problem Reports (ETD)
III-Nitride Semiconductor Materials are highly promising for the fabrications of optical devices especially in UV region. And Quantum Dots structure is theoretically predicted to have higher quantum efficiency, contrast and signal-to-noise ratio. The research study done in this thesis is part of a Ph.D project. This thesis studies the growth of GaN QDs on Sapphire for the purpose of validating the new MOCVD system. It also studies the growth of AlN film on Sapphire for the preparation to grow GaN QDs on. For the first time, the size and density of GaN QDs grown on Sapphire is studied by changing …
The Expected Value Of Catastrophes In Underground Coal Mines, 1987-2001., Danrick W. Alexander
The Expected Value Of Catastrophes In Underground Coal Mines, 1987-2001., Danrick W. Alexander
Graduate Theses, Dissertations, and Problem Reports (ETD)
Eighteen fires, explosions, a flood and an explosives blow-out caused catastrophes during the 15 year period from 1987 to 2001 and led to significant interruptions of production. Three of these events were also disasters that caused 5 or more fatalities. The number of catastrophes per year has held steady while the number of mines has decreased. This has led to a doubling of the number of catastrophes per 1000 mine operating years from 0.77 to 1.65. This growing problem is largely unrecognized. Catastrophes are the largest, most costly single property loss events in the underground coal industry. However, because major …
Error Resilient Transmission Of Three-Dimensional Dct Coded Video., Supriya Dilip Sawant
Error Resilient Transmission Of Three-Dimensional Dct Coded Video., Supriya Dilip Sawant
Graduate Theses, Dissertations, and Problem Reports (ETD)
Current multimedia applications involve video transmission over unprotected noisy channels where the video stream is contaminated with errors thereby requiring advanced error concealment/correction strategies. Our objective in this research is to devise error resilient strategies that will help combat channel errors and produce a quality video reconstruction. In this thesis we investigate two error resilient techniques, namely, unequal error protection (UEP) and multiple description coding (MDC) for video transmission. Unlike the traditional video coding system that uses two dimensional transformations accompanied with motion estimation and compensation, we focus on the three dimensional discrete cosine transform (3D DCT). We propose video …
Comparison Of The Obturation Density Of Resilon Using Cold Lateral Condensation And Varying Continuous Wave Of Condensation Techniques., Rodney George Southern
Comparison Of The Obturation Density Of Resilon Using Cold Lateral Condensation And Varying Continuous Wave Of Condensation Techniques., Rodney George Southern
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to compare Resilon™ density produced by different filling techniques. Cold lateral condensation technique (CLC) was compared to continuous wave of condensation technique (CWC) under varying temperature settings and depth of plugger penetration. Seventy acrylic blocks were instrumented, weighed and distributed into seven groups. Group 1 was obturated with CLC. Groups 2, 3, and 4 were obturated with CWC at 100° C, 150° C, and 200° C, respectively, with the plugger taken to a depth of 3 mm short of working length, and then backfilled. Groups 5, 6, and 7 were obturated in the same …
A Translator For Automated Code Generation For Service-Based Systems, Sanjib (Sean) Banerjee
A Translator For Automated Code Generation For Service-Based Systems, Sanjib (Sean) Banerjee
Graduate Theses, Dissertations, and Problem Reports (ETD)
Service based systems are playing a major role in industry today, everything from the verification of credit cards to booking airplane reservations are using some form of a service based approach. This unfortunately brings up a really big problem, how do we know that these services are actually doing what they are supposed to? Or, how do we know the service based system doesn't get somehow compromised when handling sensitive information.;A collaborative project involving Arizona State University and West Virginia University began in 2004 to first create a language, called alpha-calculus. We can prove that the code written in alpha-calculus …
The Effects Of Residual Trees On Regeneration Dynamics Following A Diameter Limit Harvest, Travis J. Deluca
The Effects Of Residual Trees On Regeneration Dynamics Following A Diameter Limit Harvest, Travis J. Deluca
Graduate Theses, Dissertations, and Problem Reports (ETD)
Ten years after diameter-limit cutting, shading from residual trees had a negative effect on regeneration growth in three Appalachian hardwood stands. Regardless of shade tolerance, saplings growing outside the crown shading of residual overstory trees had higher densities and were taller and larger in diameter. Most shade-intolerant and mid-tolerant species decreased in total height and diameter as overstory basal area increased. Black cherry height (p<0.0001) and diameter (p=0.0002) had a significant negative relationship with increasing overstory basal area. Total height of shade-tolerant species was not affected and diameter showed a positive relationship. Red maple diameter had a significant positive relationship (p<0.0001) with increasing overstory basal area. Rehabilitation of stands after diameter-limit cutting requires silvicultural release operations to reduce competition in the new cohort.
Investigation Of Techniques And Effects Of Diesel Particulate Filter Cleaning, Nathaniel Moles
Investigation Of Techniques And Effects Of Diesel Particulate Filter Cleaning, Nathaniel Moles
Graduate Theses, Dissertations, and Problem Reports (ETD)
As the emissions standards placed on diesel engine exhaust become more stringent, the use of exhaust aftertreatment devices such as diesel particulate filters has become a more attractive means to meet those standards. During the use of these filters some of the particulate captured, usually ash, begins to restrict the flow through the filter. This increases the backpressure in the exhaust system and requires routine cleaning maintenance. This study reviewed engine technology used to reduce particulate emissions and investigated the effects of off-line cleaning of diesel particulate filters using compressed air and water flowing in the reverse direction of the …
Honor, Patriarchy, And Disunion: Masculinity And The Coming Of The American Civil War, Kenneth A. Deitreich
Honor, Patriarchy, And Disunion: Masculinity And The Coming Of The American Civil War, Kenneth A. Deitreich
Graduate Theses, Dissertations, and Problem Reports (ETD)
The dissertation explores the nature of antebellum masculinity and its role in bringing on the American Civil War. It focuses its attention on two crucial episodes of the sectional crisis: the attack on Senator Sumner and the Secession Crisis of 1861 and on the four individuals, Preston Brooks, Charles Sumner, Jefferson Davis and Abraham Lincoln, who played prominent roles in those episodes.;Among the issues it explores are the degree to which Northern and Southern ideas of manhood differed and the degree to which Northerners and Southerners associated manhood with sectional identity. Did Southerners associate being a man with being a …
Shape Based Automated Mapping Of Histological Mouse Brain Sections, Manasa Danda
Shape Based Automated Mapping Of Histological Mouse Brain Sections, Manasa Danda
Graduate Theses, Dissertations, and Problem Reports (ETD)
In the development of an automatic image mapping system for mouse brain images, we focus on obtaining the best match in the two dimensional atlas images for the query image of a mouse brain section. The matching issue has to deal with the tissue distortions and tears, which are routinely encountered and possible scale, rotation and shear changes. With the goal to achieve high performance for image matching, a dual-stage approach is proposed which is based on radial distributions and region-based template matching.;Our main challenge is identifying shape features and corresponding distance metrics that produce effective characterization of 2D sections …
Process Costing Of Microchip, Dipesh Gajera
Process Costing Of Microchip, Dipesh Gajera
Graduate Theses, Dissertations, and Problem Reports (ETD)
The CMOS microchip is the workhorse of the semiconductor industry. An estimated price of a CMOS chip for an 8" wafer was stated as {dollar}1.65/chip (65). The manufacturing model was formed with practical processing times, number of machines, steps of manufacturing process, labor required, construction costs, land costs, etc as input parameters. This cost model attempts to analyze costs and calculate the cost per chip. Different sections of costs have been individually analyzed in turn to reflect their impact on the finished product. A simulation model has been run to reflect an actual semiconductor manufacturing scenario. Simulation model is also …
Web Workload Analysis And Session Characterization Using Clustering, Deepak Jha
Web Workload Analysis And Session Characterization Using Clustering, Deepak Jha
Graduate Theses, Dissertations, and Problem Reports (ETD)
Web servers have a significant presence in today's Internet. Corporations want to achieve high availability, scalability, and consistent performance for respective Web systems, maintaining high customer service standards. Web Workload characterization and the analysis of Web log files are the basis on which Web server modeling for efficiency, scalability and availability can be planned. This thesis analyzes the Web access logs of six public Web sites: Department of Computer Science and Electrical Engineering at West Virginia University, West Virginia University, three NASA IVV servers, and Clarknet server. In addition, three private NASA IVV servers are also analyzed.;We characterize sessions using …
Experimental And Numerical Investigation Of Seepage Into Longitudinal Drains, Ricardo Constantino Kiriakidis Longhi
Experimental And Numerical Investigation Of Seepage Into Longitudinal Drains, Ricardo Constantino Kiriakidis Longhi
Graduate Theses, Dissertations, and Problem Reports (ETD)
The effectiveness of longitudinal drains was investigated by using experimental and numerical methods. The main objective of the longitudinal drains was to extract and deflect the water flowing through the soil. The influence of water level, drain spacing, slope inclination and soil type was investigated. Results show that the longitudinal drains can reduce the amount of water flowing through the soil significantly.;Several soil types were used in order to cover a wide range of properties. Different soil types were obtained by mixing Ohio River sand and Kaolinite clay in different proportions depending on the desired hydraulic conductivity. In this research …
Carbon Fiber Reinforced Latex Modified Concrete For Bridge Deck Overlays, Dony Cherian Oommen
Carbon Fiber Reinforced Latex Modified Concrete For Bridge Deck Overlays, Dony Cherian Oommen
Graduate Theses, Dissertations, and Problem Reports (ETD)
Latex modified concrete deck overlay systems are used nationwide. However, cracking, spalling and delamination have been observed both in the case of old and new bridge deck construction. Such problems have also been observed even before a newly constructed bridge deck has been opened to traffic.;In this investigation, the effect of reinforcing Latex Modified Concrete (LMC) with carbon fibers is examined. The study focuses on formulation of the mix design and laboratory test methods to evaluate the potential of using Carbon Fiber Reinforced Latex Modified Concrete (CFLMC) for bridge deck overlays. A tension test method of concrete was perfected during …
Lossless Compression Of Hyperspectral Images, Sushil Kamalchand Jain
Lossless Compression Of Hyperspectral Images, Sushil Kamalchand Jain
Graduate Theses, Dissertations, and Problem Reports (ETD)
Band ordering and the prediction scheme are the two major aspects of hyperspectral imaging which have been studied to improve the performance of the compression system. In the prediction module, we propose spatio-spectral prediction methods. Two non-linear spectral prediction methods have been proposed in this thesis. NPHI (Non-linear Prediction for Hyperspectral Images) is based on a band look-ahead technique wherein a reference band is included in the prediction of pixels in the current band. The prediction technique estimates the variation between the contexts of the two bands to modify the weights computed in the reference band to predict the pixels …
Cracking Studies Of High-Performance Concrete For Bridge Decks, Zhiguo Gong
Cracking Studies Of High-Performance Concrete For Bridge Decks, Zhiguo Gong
Graduate Theses, Dissertations, and Problem Reports (ETD)
The cracking problem has been one of the major concerns for any concrete bridge deck, especially for cast-in-place concrete decks. The cracking can accelerate deterioration of the structure, thereby increasing maintenance costs and potentially shortening the system service-life. In order to achieve low permeability and reasonable strength, HPC deck mixture designs usually include a higher cementitious material content, which means more shrinkage, and therefore, makes the bridge deck more susceptible to cracking. Thus, further and better understanding of shrinkage and cracking properties of HPC designated for bridge decks is necessary. As part of a comprehensive project, this dissertation is focused …
"The Relapse Of Reconstruction:" Railroad -Building, Party Warfare And White Supremacy In Blue Ridge North Carolina, 1854-1888., Paul D. Yandle
"The Relapse Of Reconstruction:" Railroad -Building, Party Warfare And White Supremacy In Blue Ridge North Carolina, 1854-1888., Paul D. Yandle
Graduate Theses, Dissertations, and Problem Reports (ETD)
In the early twentieth century, the men who had led North Carolina's mountain counties through Civil War and Reconstruction were praised by those who followed them for two "accomplishments:" bringing much-needed railroad service to the mountains and preserving white rule in North Carolina. The completion of the Western North Carolina Railroad to the Tennessee line in 1882 was, indeed, noteworthy for the perseverance it showed over physical and political obstacles. The preservation of white rule was equally if not more noteworthy for the suffering it brought to African Americans statewide. However, both railroad service and white supremacy were seen at …
Portable Transparent Indenter Instrumentation For Material Surface Characterization, Julio A. Noriega
Portable Transparent Indenter Instrumentation For Material Surface Characterization, Julio A. Noriega
Graduate Theses, Dissertations, and Problem Reports (ETD)
A portable Transparent Indenter Measurement (TIM) instrument that combines Instrumented Indentation Testing characteristics with optical microscopy through a transparent half ball indenter has been developed. The TIM instrument can provide the following experimental data: (a) the load applied as the indenter penetrates the specimen, (b) the displacement of the piezoelectric tip, and (c) the indented area. All these data are used to obtain the material stress-strain curve, through the determination of the elastic modulus, yield strength, and strain hardening exponent.;Using the TIM instrument and based on Hertz elastic contact theory, a new method to obtain material elastic modulus is developed. …
Studies To Investigate Variables Affecting Coating Uniformity In A Pan Coating Device, Preetanshu Pandey
Studies To Investigate Variables Affecting Coating Uniformity In A Pan Coating Device, Preetanshu Pandey
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to investigate the variables that affect the mass coating variability (CV) in a pan coating process. A novel video-imaging technique was used to record the movement of tablets inside the pan. The effects of pan loading, pan speed and particle shape were studied. The response variables were circulation time, surface time, projected surface area, dynamic angle of repose, cascading velocity (2 directions), and dispersion coefficient. Experiments were conducted at 3 different pan speeds, 6, 9 and 12 rpm, and two pan loadings. The circulation time ranged from 2.8-10.8 s, depending on the operating condition, …
Classification Of Dental X-Ray Images, Usman Qureshi
Classification Of Dental X-Ray Images, Usman Qureshi
Graduate Theses, Dissertations, and Problem Reports (ETD)
Forensic dentistry is concerned with identifying people based on their dental records. Forensic specialists have a large number of cases to investigate and hence, it has become important to automate forensic identification systems. The radiographs acquired after a person is deceased are called the Post-mortem (PM) radiographs, and the radiographs acquired while the person is alive are called the Ante-mortem (AM) radiographs. Dental biometrics automatically analyzes dental radiographs to identify the deceased individuals. While, ante mortem (AM) identification is usually possible through comparison of many biometric identifiers, postmortem (PM) identification is impossible using behavioral biometrics (e.g. speech, gait). Moreover, under …
Evaluation Of Current And Early Production Electronically Controlled Heavy-Duty Diesel Engine Emissions Based On Fuel Property Differences, Varakala Shashidhar Reddy
Evaluation Of Current And Early Production Electronically Controlled Heavy-Duty Diesel Engine Emissions Based On Fuel Property Differences, Varakala Shashidhar Reddy
Graduate Theses, Dissertations, and Problem Reports (ETD)
Exhaust emissions emitted from heavy-duty diesel engines (HHDE) have been one of the contributors towards air pollution which indirectly have adverse effects on human health. This concern has made regulatory agencies impose stringent emissions standards in the United States and in many other countries. These increasingly stringent exhaust emissions levels have forced the HDDE manufacturers to focus largely on engine technology to reduce emissions levels to meet the regulatory standards.;Diesel fuel properties influence diesel engine emissions but how sensitive the engines are to theses property changes is the objective of this study. To examine the influences, regulated emissions from two …
Bimetallic Carbides As Catalysts For Dry Reforming And Steam Reforming, Huifang Shao
Bimetallic Carbides As Catalysts For Dry Reforming And Steam Reforming, Huifang Shao
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this work, a series of novel bimetallic carbide catalysts has been successfully prepared in house, by changing the metallic elements therein and the ratio of CO2/CO in carburization process. Co-W-C and Ni-W-C are the elements in the bimetallic carbides to be discussed in this dissertation. Following the preparation, different techniques were applied to characterize the catalyst from the bulk phase to the surface.;For Co-W-C, the catalytic evaluation were carried out for three reactions, methane dry reforming (DRM), methane steam reforming (SRM) and methanol steam reforming (SRMeOH). This bimetallic carbide is stable and active for DRM after proper pretreatment, while …
Microstructure Modeling And Finite Element Analysis Of Particulate Reinforced Metal Matrix Composites, Praveen Shankaranarayana
Microstructure Modeling And Finite Element Analysis Of Particulate Reinforced Metal Matrix Composites, Praveen Shankaranarayana
Graduate Theses, Dissertations, and Problem Reports (ETD)
The study of microscopic and macroscopic response of a particulate reinforced metal matrix composites (PRMMC) using finite element (FE) analysis is the aim of the current investigation. In this regard, three types of microstructure models are subjected to FE analysis. In the first part of the work, a technique is presented for the generation of artificial microstructures containing spherical and ellipsoid shaped inclusions. The problem of detection of ellipsoidal intersection is tackled using newly available algorithms. To account for higher-scale effects such as clustering, information from the micro-scale model is input into a meso-scale model.;The FE analysis of the artificial …
Solution Techniques For A Crane Sequencing Problem, Jin Shang
Solution Techniques For A Crane Sequencing Problem, Jin Shang
Graduate Theses, Dissertations, and Problem Reports (ETD)
In shipyards and power plants, relocating resources (items) from existing positions to newly assigned locations are costly and may represent a significant portion of the overall project budget. Since the crane is the most popular material handling equipment for relocating bulky items, it is essential to develop a good crane route to ensure efficient utilization and lower cost. In this research, minimizing the total travel and loading/unloading costs for the crane to relocate resources in multiple time periods is defined as the crane sequencing problem (CSP). In other words, the objective of the CSP is to find routes such that …
Shoeprint Analysis: A Gis Application In Forensic Evidence, Michael Anthony Walnoha Jr.
Shoeprint Analysis: A Gis Application In Forensic Evidence, Michael Anthony Walnoha Jr.
Graduate Theses, Dissertations, and Problem Reports (ETD)
The overall intent of this study is to illustrate how GIS and crime mapping methods can be applied to forensic evidence to better understand and comprehend spatial patterns that exist in these data. This study bridges common crime mapping principles such as hot spot mapping, exploratory data analysis, and spatial statistics to spatial forensic evidence investigation. In particular, forensic shoeprint evidence is examined and spatial relationships are analyzed using both exploratory and confirmatory statistical analysis. It is found that crime mapping principles can be indirectly related to shoeprint evidence mapping. Exploratory spatial data analysis is extremely helpful in breaking up …
Genetic Analysis Of Rainbow Trout (Oncorhynchus Mykiss): Strain Identification Via Microsatellites And Analysis Of Expressed Sequence Tags In Intestine, Liver, Kidney, And Ovary, Amanda B. Stewart
Graduate Theses, Dissertations, and Problem Reports (ETD)
Implementation of modern fishing techniques and hatchery technologies necessitates use of genetics in management of fishery stocks. Genetic analysis of rainbow trout, Oncorhynchus mykiss, will assist development of superior strains of a valuable aquacultured species. This study was to (1) develop polymorphic microsatellite markers to examine for variation among rainbow trout strains and develop an identification panel of microsatellites to distinguish individual strains, and (2) to identify novel genes and estimate relative gene expression profiles (expressed sequence tags from rainbow trout liver, intestine, kidney, and ovary non-normalized libraries). Thirty-seven microsatellites were identified by screening 576 clones from TAGA and ATG-repeat …
Model And Software Development For Predicting Fish Growth In Trout Raceways, Yin-Han Wang
Model And Software Development For Predicting Fish Growth In Trout Raceways, Yin-Han Wang
Graduate Theses, Dissertations, and Problem Reports (ETD)
A software program was built using Visual Basic for Applications (VBA) in MicrosoftRTM Excel. The purpose of the software is to allow users to manage their raceways more efficiently by providing a tool to simulate the performance of an existing raceway or to predict the behavior of a raceway under a wide variety of operating scenarios. The program considers the behavior of a system of multiple raceways arranged both in series and parallel configurations, and allows for the addition, removal and combination of different cohorts at different times in different raceways. Input data required include properties of the incoming water …
Iqgap1 Knockdown Enhances The Endothelial Barrier In Vitro, Wentao Zhang
Iqgap1 Knockdown Enhances The Endothelial Barrier In Vitro, Wentao Zhang
Graduate Theses, Dissertations, and Problem Reports (ETD)
IQGAP1 overexpression inhibits E-cadherin-mediated epithelial cell-cell adhesion by distabilizing the adherens junctions, and activated Rac1 and Cdc42 may prevent these effects by removing IQGAP1 from the adherens junction complex. In the present study, we determined if IQGAP1 associates with the adherens junction of endothelial cells and affects endothelial barrier function. In human umbilical vein endothelial cells (HUVECs), IQGAP1 associated with VE-cadherin, the catenins, beta, gamma, alpha, and p120, but not with N-cadherin or the tight junction proteins, occludin, claudin-5, and ZO-1. Detergent extracted most of the IQGAP1 associated with VE-cadherin. Treatment of endothelial cells with sphingosine-1-phosphate (S1P), which increases the …
Distributional Ecology Of Fish In The Kanawha River, West Virginia., Kimberly Ann Bjorgo
Distributional Ecology Of Fish In The Kanawha River, West Virginia., Kimberly Ann Bjorgo
Graduate Theses, Dissertations, and Problem Reports (ETD)
Large rivers are multidimensional systems where ecological processes occur at a variety of spatial and temporal scales. This investigation addresses the relationship between fish distribution and habitat use within the Marmet Pool of the Kanawha River, West Virginia. Fish habitat use, movement patterns, distribution, and density data were obtained concurrently with abiotic data such as river discharge, temperature, depth, and sediment composition to provide essential dimensions to the assumption that habitat dictates location of organisms. Radio telemetry was used to examine movement, habitat use, and associations between large river fish species. These data were also used to make inferences about …
A Strategy For Prevention Of Sequestered Carbon Dioxide Seepage From Cbm Formations., Miguel Angel Tovar Torrealba
A Strategy For Prevention Of Sequestered Carbon Dioxide Seepage From Cbm Formations., Miguel Angel Tovar Torrealba
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study introduces a new strategy for the prevention of post-sequestration carbon dioxide (CO2) seepage to the surface from CBM (coalbed methane) formations that is named the “N ature’s Sequestration Technique” or “N ST.” The objective is to sequester CO2 in a CBM formation for an extensive time period (thousands of years), filling the coal cleat system with formation water. Using a commercial numerical simulator and representative data of the Appalachian basin, we investigated whether or not the presence of water in the cleats helps to sequester CO2 in a coalbed for a long period of time without significant seepage. …