Digital Commons Network^™

Linear Unmixing Of Hyperspectral Signals Via Wavelet Feature Extraction, Jiang Li

Theses and Dissertations

A pixel in remotely sensed hyperspectral imagery is typically a mixture of multiple electromagnetic radiances from various ground cover materials. Spectral unmixing is a quantitative analysis procedure used to recognize constituent ground cover materials (or endmembers) and obtain their mixing proportions (or abundances) from a mixed pixel. The abundances are typically estimated using the least squares estimation (LSE) method based on the linear mixture model (LMM). This dissertation provides a complete investigation on how the use of appropriate features can improve the LSE of endmember abundances using remotely sensed hyperspectral signals. The dissertation shows how features based on signal classification …

Relationships Between Reflectance And Soil Physical And Chemical Properties, Abdulrahman Mohammed Alrajehy

Theses and Dissertations

Soil chemical and physical properties are important to farm productivity, and they vary within fields, so farmers are interested in managing inputs like fertilizer according to local soil conditions within fields. Thus, they must have knowledge of soil conditions of interest, which have historically been measured at a few locations with tedious soil sampling and laboratory analyses. Advantageous to farmers would be a measurement method that provided more geographically detailed information at similar or lower cost. Remote and ground-based optical sensing are possibilities for gathering detailed soil information rapidly and inexpensively. This study considers the possibility of optically measuring soil …

Experimental Studies Of The Drag Of An Axisymmetric Submarine Hull, John Lindsley Freudenthal

Theses and Dissertations

The purpose of these studies was to measure the drag coefficient of a small model submarine to add data to a Reynolds number study. First, a laser Doppler velocimeter (LDV) was used to measure the flow characteristics of the Mississippi State University water tunnel. The velocity and turbulence intensity profiles were measured for a range of freestream velocities of 8.6 m/s to 10.7 m/s. Several wake velocity profiles were taken for a model submarine at downstream distances of x/d = 10 to x/d = 28, with a freestream velocity of 8.6 m/s. A formula for the drag coefficient that uses …

A Framework For Automatic Ontology Generation From Autonomous Web Applications, Giovanni Modica

Theses and Dissertations

Ontologies capture the structure, relationships, semantics and other essential meta information of an application. This thesis describes a framework to automate application interoperability by using dynamically generated ontologies. We propose a set of techniques to extract ontologies from data accessible on the Web in the form of semi-structured HTML pages. Ontologies retrieved from similar applications are matched together to create a general ontology describing the application domain. Information retrieval and graph matching techniques are used to match and measure the usefulness of the ontologies created. Matching algorithms are combined together to produce global ontologies based on local ontologies inherently present …

A Trusted Environment For Mpi Programs, German Florez-Larrahondo

Theses and Dissertations

Several algorithms have been proposed to implement intrusion detection systems (IDS) based on the idea that anomalies in the behavior of a system might be produced by a set of actions of an intruder or by a system fault. Almost no previous research has been conducted in the area of anomaly detection for high performance clusters. The research reported in this thesis demonstrates that the analysis of sequences of function calls issued by one or more processes can be used to verify the correct execution of parallel programs written in C/C++ with the Message Passing Interface (MPI) in a cluster …

Accuracy Study Of A Free Particle Using Quantum Trajectory Method On Message Passing Architecture, Ravi K. Vadapalli

Theses and Dissertations

Bhom's hydrodynamic formulation (or quantum fluid dynamics) is an attractive approach since, it connects classical and quantum mechanical theories of matter through Hamilton-Jacobi (HJ) theory, and quantum potential. Lopreore and Wyatt derived and implemented one-dimensional quantum trajectory method (QTM), a new wave-packet approach, for solving hydrodynamic equations of motion on serial computing environment. Brook et al. parallelized the QTM on shared memory computing environment using a partially implicit method, and conducted accuracy study of a free particle. These studies exhibited a strange behavior of the relative error for the probability density referred to as the transient effect. In the present …

An Advanced Signal Processing Toolkit For Java Applications, Vijay Pravin Shah

Theses and Dissertations

The aim of this study is to examine the capability, performance, and relevance of a signal processing toolkit in Java, a programming language for Web-based applications. Due to the simplicity, ease and application use of the toolkit and with the advanced Internet technologies such as Remote Method Invocation (RMI), a spectral estimation applet has been created in the Java environment. This toolkit also provides an interactive and visual approach in understanding the various theoretical concepts of spectral estimation and shows the need to create more application applets to better understand the various concepts of signal and image processing. This study …

An Analysis For Evaluating The Cost/Profit Effectiveness Of Parallel Systems, Maria Teran

Theses and Dissertations

A new domain of commercial applications demands the development of inexpensive parallel computing platforms to lower the cost of operations and increase the business profit. The calculation of returns on an IT investment is now important to justify the decision of upgrading or replacing parallel systems. This thesis presents a framework of the performance and economic factors that are considered when evaluating a parallel system. We introduce a metric called the cost/profit effective metric, which measures the effectiveness of a parallel system in terms of performance, cost and profit. This metric describes the profit obtained from the performance of three …

Modeling Of Evaporation And Condensation Pressure-Drop In Micro-Fin Tubes, Meng-Onn Tan

Theses and Dissertations

Three existing pressure-drop models are validated and analyzed with experimental data compiled from the research database. From the analysis, it was found that the pressure-drop prediction results from the models are not very accurate and not consistent with all experimental datasets. A new pressure-drop model was consequently created based on the findings from the study, and experimental data from the database were used to validate the model to produce more accurate and consistent predictions. The new pressure-drop model was tested on experimental datasets that were in the database and also with experimental datasets that were not in the database. Good …

Scheduling For Proportional Differentiated Services On The Internet, Manimaran Selvaraj

Theses and Dissertations

Proportional Differentiated Services can be provisioned in terms of bandwidth, delay, or packet loss. Several studies contributed schedulers and packet droppers that achieved proportional bandwidth, delay, or loss differentiation. However, all these schemes differentiated in terms of only one of the three metrics. A simple, unified, scalable, and robust scheme to simultaneously control all three metrics was felt important. By controlling just delay and packet loss, proportional differentiation can be achieved in terms of all three metrics. A robust adaptive scheduler for proportional delay differentiation services is presented. Proportional services are further policed by a class based packet dropper. The …

Small Signal Stability Of An Unregulated Power System, Vikas Singhvi

Theses and Dissertations

Rotor angle stability is the ability of the interconnected synchronous machines of a power system to remain in synchronism. This stability problem is concerned with the behavior of one or more synchronous machine after they have been perturbed. These perturbations can be small or large depending upon the type of disturbances considered. The work presented in this thesis is focused on the power system behavior when subjected to small disturbances. The ?small signal? disturbances are considered sufficiently small for the linearization of system equations to be permissible for the purpose of the analysis. The first step in the small signal …

Evaluation Of The Effectiveness Of Radar Obstacle Detection Systems When Used On Industrial Lift Trucks, Oluwatosin Toluwalase Odetola

Theses and Dissertations

This study addresses the application and the effectiveness of radar obstacle sensors for forklift trucks during reverse travel. Two different discriminating radar obstacle sensors with different outputs are evaluated. This study reviews the safety of human exposure to emissions from these radar sensors; documents the field of view obtained from experiments with the two systems; gives the results from experiments with sensors on lift trucks. The influence of obstacle reflectivity, composition and area on the size and shape of the radar detection zone are discussed. An experimental setup for measuring position and velocity of the obstacle crossing the truck path …

Growth Of 6h-Sic Homoepitaxy On Substrates Off-Cut Between The [01-10] Planes, James Dennis Vandersand Jr

Theses and Dissertations

The wide band-gap semiconductor silicon carbide has tremendous potential for use in high power, high temperature, and high frequency electronic devices. One of the more important design factors for these devices is the epitaxial layer. It is desirable that this thin film have uniform polytype, thickness, and impurity concentration, as well as be defect free. One method used for SiC to ensure epitaxial layers with homogenous polytype is to cut wafers from a boule that has been tilted towards a specific crystallographic face at a fixed angle (known as ?off cut?). The purpose of this thesis was to investigate the …

President Macchi Impeached, Ladb Staff

NotiSur

No abstract provided.

Meeting Minutes, Wku University Senate

Faculty Senate

Meeting to discuss COSFL meeting, deans and directors council, health insurance, curriculum committee, general education courses, enrollment and sustainable growth strategy.

The Four Hundred Eighth Report Of The Curricular Affairs Committee, University Of Rhode Island Faculty Senate

Faculty Senate Bills

No abstract provided.

The Minutes Of The Marshall University Faculty Senate Meeting, December 12, 2002, Marshall University Faculty Senate

Faculty Senate Minutes

No abstract provided.

12/12/2002 Obituary Records, Hawaii Obituaries

Obituaries

List of Obituaries for individuals who passed away on 12/12/2002. Scroll down to see the names and obituary description.

R.I.T. News & Events - December 12, 2002, University News Services, Rochester Institute Of Technology

University Publications

ITS launches new internal e-mail feature”ALLSTAFF; MLK celebration features Tutus daughter; NTID gets million dollar grant; RIT grad student wins third place in Motor Trend design contest; RIT Inn provides on the job training; Estes returns to campus as Athenaeum librarian; Certificate encourages healthy living, thinking; Center for Religious Life welcomes several new campus ministers; New program trains senior living managers; NanoPower lab has successful first year; Its all fun and games for COBs Pray; Health and safety grows; reaches online community; Grants specialists offer how-to courses

Buffer Interference Architecture, Vladimir I. Prodanov

Electrical Engineering

An up to 3× breakdown voltage tristate capable integrated circuit CMOS buffer includes a level shifter circuit and a driver circuit. The driver stage includes a series connected n-channel and p-channel cascode stacks, each including at least three transistors. Dynamic gate biasing is provided for the third n-channel and p-channel cascode transistors to prevent voltage overstress of the cascode transistors. The level shifter circuit includes at least one pseudo N-MOS inverter including an input transistor, a protective cascode stack including at least one n-channel cascode transistor, and a load transistor. The level shifter provides at least one voltage shifted input …

Meeting Notes 2002-12-12 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Holy Cross Magazine, Vol. 37, No. 1, Winter 2003, College Of The Holy Cross

Holy Cross Magazine

88.1 On Your Radio Dial!
WCHC has been transmitting its signal for over 50 years, and while the music has changed, the passion for broadcasting remains.
By Paul E. Kandarian

Keeping Faith: A Religious Profile of Holy Cross Students
In recent years, a debate has raged about the spiritual health of Catholic colleges. While many have observed a heightened focus on religious mission during the 1990s, others are much more pessimistic.
By John A. Schmalzbauer and Royce A. Singleton Jr.

Pre-Business Program Opens New Doors
As first-year students come up Linden Lane for the first time, a future in business …

The Missouri Miner, December 12, 2002

The Missouri Miner Newspaper

No abstract provided.

Daily Eastern News: December 12, 2002, Eastern Illinois University

December

No abstract provided.

Campus Chronicle (Vol. 5, No. 18), Valparaiso University

Campus Chronicle

No abstract provided.

Reconfiguration In An Optical Multiring Interconnection Network - Masters Thesis, December 2002, Praveen Krishnamurthy

All Computer Science and Engineering Research

The advent of optical technology that can feasibly support extremely high bandwidth chip-to-chip communication raises a host of architectural questions in the design of digital systems. Terabit per second (and higher) bandwidths have not been previously available at the chip level. In this thesis, we examine the use of this technology in two different scenarios, viz., as the interconnection network in a multiprocessor system and as a switch fabric in network routers. Specifically, we examine the performance gains associated with utilizing the bandwidth reconfiguration capabilities of a system based on this technology.

The Diamond With The Zircon [Spoof Issue], December 12, 2002, Dordt College

Dordt Diamond

• Front Page: Choirs Prepare for Christmas; Agricultural Missions Conference Seeks Solutions for Important Issues; Dordt Awarded $2 Million; Concert Choir Goes on Winter Tour
• News: Iraq Discussion Develops Ideas; Christmas Around the World; Fourteen-Meal Plan Will Be Phased Out
• Zircon
• Opinion: Dordt Buildings Should Be Respected; Response: Kloosterman's Analysis of Gender Roles Simplistic; Smokers: Quit for Us and for Dordt, if Not for Yourselves; Response to Helms' Letter
• Features: Laura's Story

The Montclarion, December 12, 2002, The Montclarion

The Montclarion

Student Newspaper of Montclair State Teachers College

Vista: December 12, 2002, University Of San Diego

USD Vista (1965-)

No abstract provided.

Forbes V. Lower Merion

2002 Decisions

United States District Court for the Eastern District of Pennsylvania