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2005

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Perceptions Of Directors Of Special Education Related To Their Knowledge And Training, Francis J. Super Dec 2005

Perceptions Of Directors Of Special Education Related To Their Knowledge And Training, Francis J. Super

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study investigates the perceptions of the knowledge base that are held by directors of special education. The study focuses on one main research question: What is the knowledge base special education directors feel they need to know in the field of special education? Mixed methodology, constant comparative method as described by Maycut and Morehouse (1994) and Statistical Package for the Social Sciences, is used to analyze data from a survey and interviews. Survey data was collected from 45 current special education administrators along with in-depth interview data from 6 directors. The interviewees were chosen randomly using selective sampling based …

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Learner Satisfaction And Learning Performance In Online Courses On Bioterrorism And Weapons Of Mass Destruction, Tatiana I. Solovieva Dec 2005

Learner Satisfaction And Learning Performance In Online Courses On Bioterrorism And Weapons Of Mass Destruction, Tatiana I. Solovieva

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examined the relationships between measures of (a) learner satisfaction with online courses on weapons of mass destruction (WMD) and bioterrorism intended to address the educational needs of responder Communities of Practice (CoP) and (b) degrees of accomplishment by the learner with those online courses. Provided that course design characteristics were similar between courses and that content was different, it was important to examine learner satisfaction with course common aspects in relation to learning outcomes and identify the predictors of effectiveness and relations between the learner satisfaction with the course characteristics and the learner achievement for potential design improvements …

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Strategies Nurse Educators Use To Integrate Computer -Assisted Instruction Into Their Courses To Teach Clinical Decision-Making, Beverly J. Schaefer Dec 2005

Strategies Nurse Educators Use To Integrate Computer -Assisted Instruction Into Their Courses To Teach Clinical Decision-Making, Beverly J. Schaefer

Graduate Theses, Dissertations, and Problem Reports (ETD)

The strategies nurse educators' use to integrate computer-assisted instruction (CAI) designed to teach clinical decision-making into their courses were investigated to determine their frequency of use and effectiveness. The "Integration of CAI Questionnaire," an on-line electronic survey designed by the investigator, was used to collect data. A stratified randomly-selected group of 109 schools of nursing that was a statistically representative mix of baccalaureate (BSN), associate (AD) and diploma schools from each of six geographic regions of the United States comprised the sample.;The study questions were as follows: (1) What integration strategies have nurse educators used to integrate CAI? (2) How …

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A Block Oriented Fingerprinting Scheme In Relational Database, Siyuan Liu, Shuhong Wang, Robert H. Deng, Weizhong Shao Dec 2005

A Block Oriented Fingerprinting Scheme In Relational Database, Siyuan Liu, Shuhong Wang, Robert H. Deng, Weizhong Shao

Research Collection School Of Computing and Information Systems

The need for protecting rights over relational data is of ever increasing concern. There have recently been some pioneering works in this area. In this paper, we propose an effective fingerprinting scheme based on the idea of block method in the area of multimedia fingerprinting. The scheme ensures that certain bit positions of the data contain specific values. The bit positions are determined by the keys known only to the owner of the data and different buyers of the database have different bit positions and different specific values for those bit positions. The detection of the fingerprint can be completed …

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Cryptanalysis Of A Forward Secure Blind Signature Scheme With Provable Security, Shuhong Wang, Feng Bao, Robert H. Deng Dec 2005

Cryptanalysis Of A Forward Secure Blind Signature Scheme With Provable Security, Shuhong Wang, Feng Bao, Robert H. Deng

Research Collection School Of Computing and Information Systems

A forward secure blind signature scheme was proposed by Duc, Cheon and Kim, in ICICS 2003. The security of the scheme was proved to be equivalent to the strong RSA assumption in the random oracle model. In this paper we present an attack to the scheme by forging valid signatures with public keys only. The attack is so efficient that forging a valid signature needs less computation than legally generating a signature, even considering only the user side. Our result implies that the security proof of the scheme must be invalid. Furthermore we point out the fault of the proof …

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Sequential Aggregate Signatures Working Over Independent Homomorphic Trapdoor One-Way Permutation Domains, Huafei Zhu, Feng Bao, Robert H. Deng Dec 2005

Sequential Aggregate Signatures Working Over Independent Homomorphic Trapdoor One-Way Permutation Domains, Huafei Zhu, Feng Bao, Robert H. Deng

Research Collection School Of Computing and Information Systems

The contribution of this paper has two folds. In the first fold, we propose a generic construction of sequential aggregate signatures from families of certificated trapdoor one-way permutations. We show that our construction is provably secure in the random oracle model assuming that the underlying homomorphic permutations are trapdoor one-way. Compared to Lysyanskaya et al’s generic construction that is constructed from a trapdoor one-way permutation family working over the same domain [16], our scheme works over independent trapdoor one-way permutation domains. The flexible choice of the underlying permutation domains benefits our scheme to its applications in the real world where …

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A Proposed Design For The Broadband Microwave Distributed Amplifiers, Ali A. Ali, M. S. Abdulwahaab, Azad Raheem Kareem Dec 2005

A Proposed Design For The Broadband Microwave Distributed Amplifiers, Ali A. Ali, M. S. Abdulwahaab, Azad Raheem Kareem

Iraqi Journal of Computers, Communications, Control and Systems Engineering

In this paper, a new method for the design of the broadband RF/microwave amplifiers employing distributed amplification is presented. It proposes to use stages with asymmetric lumped elements (inductances and capacitances) in the gate and drain circuits of the amplifier instead of symmetric elements in order to control the frequency response and to achieve a flat gain over a large bandwidth. The need for impedance matching problems is also solved. Simulation result obtained demonstrates that the new design gives better frequency response as compared to the conventional distributed amplifiers even without optimization

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Digital System For Aircraft Attitude Measurement, Moayad Shawqi M., M. Al-Faysal, Haider Khudher Lateef Dec 2005

Digital System For Aircraft Attitude Measurement, Moayad Shawqi M., M. Al-Faysal, Haider Khudher Lateef

Iraqi Journal of Computers, Communications, Control and Systems Engineering

Aircraft convention defines the attitude parameters in terms of three angles: roll, pitch and heading. These angles are referenced to the local horizontal plane defined by gravity vector. Attitude information for aircraft is obtained by using spinning rotor or ring laser gyroscopes. These systems are very precise but they suffer from many problems such as high cost, large size and weight and the requirements for elaborate and intricate mechanical structure. These problems can be reduced by the exploitation of the micro machined technology. In this work, an attitude measuring system based on the ADXL202 accelerometer, the HMC2003 magnetic sensor and …

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Design And Implementation Of A General Purpose Transmitter Based On Microcontroller At89c52, Munqith A. Al-Baker, Ameera Ali Salman Dec 2005

Design And Implementation Of A General Purpose Transmitter Based On Microcontroller At89c52, Munqith A. Al-Baker, Ameera Ali Salman

Iraqi Journal of Computers, Communications, Control and Systems Engineering

The purpose of this paper is to design an efficient, reliable, fast, easy to extend, andsmall size experimental real-time operating system kernel for uniprocessor multitasksystem. It is a kernel with an underlying formal model based on periodic and sporadic taskswith guaranteed response time requirements to tasks and shared software resources. It isdistinguished by the programming model it supports and its use of a new processorscheduling and resource allocation.The kernel represents a nucleus of supervisory softwareto perform the required real–time functions. It logically runs and coordinates concurrentand physically asynchronous activities. It offers appropriate synchronization and taskcommunication mechanism among tasks.

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Reduced Order Strapdown Terrestrial Ins Algorithm, Salam A. Ismail Dec 2005

Reduced Order Strapdown Terrestrial Ins Algorithm, Salam A. Ismail

Iraqi Journal of Computers, Communications, Control and Systems Engineering

Strapdown system algorithms are the mathematical definition of processes which convert the measured outputs of Inertial Navigation System (INS) sensors that are fixed to a vehicle body axis into quantities which can be used to control the vehicle. In this work, a reduced and fast terrestrial strapdown INS algorithm was developed and implemented for three-degree of freedom (3DOF). The evaluation of the algorithm is based on the accuracy of the proposed algorithm with real data.

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A Dynamic Economic Dispatch Solution Method Using Hopfield Neural Network, Q. M. Alias, F. Ben Hameda Dec 2005

A Dynamic Economic Dispatch Solution Method Using Hopfield Neural Network, Q. M. Alias, F. Ben Hameda

Iraqi Journal of Computers, Communications, Control and Systems Engineering

This paper analyzes and tests a proposed neural network (NN) to solve the Dynamic Economic Dispatch (DED) as part of the unit commitment problem. The proposed NN is a fast and direct computation solver using a Hopfield model for solving the dynamic economic dispatch problem of thermal generators which is a dynamic optimization problem taking into account the constraints imposed on system operation by generator ramping rate limits. Formulations for solving the ED and DED problems are explored. Through the application of these formulations, direct computation instead of iterations for solving the problem becomes possible. Not like the usual Hopfield …

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Design And Implementation Of Real-Time Executive (Rtdm) For Multitask System, Dhuha Basheer Abdullh, Basil Shukur Mohammed Dec 2005

Design And Implementation Of Real-Time Executive (Rtdm) For Multitask System, Dhuha Basheer Abdullh, Basil Shukur Mohammed

Iraqi Journal of Computers, Communications, Control and Systems Engineering

The purpose of this paper is to design an efficient, reliable, fast, easy to extend, and small size experimental real-time operating system kernel for uniprocessor multitask system. It is a kernel with an underlying formal model based on periodic and sporadic tasks with guaranteed response time requirements to tasks and shared software resources. It is distinguished by the programming model it supports and its use of a new processor scheduling and resource allocation.The kernel represents a nucleus of supervisory software to perform the required real–time functions. It logically runs and coordinates concurrent and physically asynchronous activities. It offers appropriate synchronization …

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Design And Implementation Of A Single Layer Feed Forward Neural Network Using Stand-Alone Architecture Fpgas-Based Platform, Waleed A. Mahmood, Monther H., Mothana H. Dec 2005

Design And Implementation Of A Single Layer Feed Forward Neural Network Using Stand-Alone Architecture Fpgas-Based Platform, Waleed A. Mahmood, Monther H., Mothana H.

Iraqi Journal of Computers, Communications, Control and Systems Engineering

A single layer feed-forward neural network are proposed and implemented using the schematic editor of the Xilinx foundation series 2.1i. First the mathematical model of the data set (weights and inputs) is presented in a matrix multiplication format. Secondly the five design stages are presented and implemented without using the finite state machine, which control the processes of the forward propagation phase, error calculation, and the training algorithm. Finally the design can be optimized to decrease the total execution time and to minimize the cost, which eventually will increase the performance and improve the function density.

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Implementation Of Link Quality Evaluation Unit For Hf Modems, Siddeq Y. Ameen, Muhaned I. Al-Farras, Wial Abdulhassan Dec 2005

Implementation Of Link Quality Evaluation Unit For Hf Modems, Siddeq Y. Ameen, Muhaned I. Al-Farras, Wial Abdulhassan

Iraqi Journal of Computers, Communications, Control and Systems Engineering

Link quality evaluation unit is very essential in recent digital data receiver especially in time vary channel such as HF and mobile radio. It provides the adaptive detector with the required information or parameters optimize its performance from the power and rate points of views. These information parameters include the signal-tonoise ratio, Doppler spread, channel severity and the estimate of the sampled impulse response of the channel. Efficient schemes for the estimation of HF channel were presented. The chosen parameters are the Doppler spread, channel severity and the signal-to-noise ratio which are the dominant ionosheric propagation parameters. Computer simulation tests …

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Improving The Quality Of Conceptual Modeling Using Cognitive Mapping Techniques, Keng Siau, X. Tan Dec 2005

Improving The Quality Of Conceptual Modeling Using Cognitive Mapping Techniques, Keng Siau, X. Tan

Research Collection School Of Computing and Information Systems

Conceptual modeling involves the understanding and communication between system analysts and end-users. Many factors may affect the quality of conceptual modeling processes as well as the models per se. Human cognition plays a pivotal role in understanding these factors and cognitive mapping techniques are effective tools to elicit and represent human cognition. In this paper, we look at the use of cognitive mapping techniques to improve the quality of conceptual modeling. We review frameworks on quality in conceptual modeling and examine the role of human cognition in conceptual modeling. The paper also discusses how human cognition is related to quality …

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Robust Pre-Processing Techniques For Non-Ideal Iris Images, Purva M. Barve Dec 2005

Robust Pre-Processing Techniques For Non-Ideal Iris Images, Purva M. Barve

Graduate Theses, Dissertations, and Problem Reports (ETD)

The human iris has been demonstrated to be a very accurate, non-invasive and easy-to-use biometric for personal identification. Most of the current state-of-the-art iris recognition systems require the iris acquisition to be ideal. A lot of constraints are hence put on the user and the acquisition process.;Our aim in this research is to relax these conditions and to develop a pre-processing algorithm, which can be used in conjunction with any matching algorithm to handle the so-called non-ideal iris images. In this thesis we present a few robust techniques to process the non-ideal iris images so as to give a segmented …

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Small Particle Separation In A Circulating Fluidized Bed Riser System, Robert R. Almond Dec 2005

Small Particle Separation In A Circulating Fluidized Bed Riser System, Robert R. Almond

Graduate Theses, Dissertations, and Problem Reports (ETD)

Particle separation is an important area of interest in many fields, such as the coal and mineral processing industries. A circulating fluidized bed riser system has been built to investigate the separation processes. The system separated the particles into three streams which lead to the dense bin, the product bin, and the filter chamber. Promising results have been obtained which may lead to a system which is viable for commercial separation. The following categories of separation were investigated: separation based on size difference of the particles, separation based on density difference of the particles, and the practicality of separating mineral …

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Laser-Induced Breakdown Spectroscopy As A Diagnostic Tool For Coal Fines, I. Andrew Aurelio Dec 2005

Laser-Induced Breakdown Spectroscopy As A Diagnostic Tool For Coal Fines, I. Andrew Aurelio

Graduate Theses, Dissertations, and Problem Reports (ETD)

Laser Induced Breakdown Spectroscopy (LIBS) is a technique that uses a laser, to focus down and atomize a sample of desired material. Focusing of the laser onto the material causes a plasma formation, which the material is broken down into excited ionic and atomic states. The atoms then emit characteristic optical radiation. Collection of the emitted light can be used to provide information on the elemental composition of the material. This research investigates a fundamental study of laser-induced breakdown spectroscopy (LIBS) applied to coal samples, coal fines, and fly ash. During this research, apparatus and methodology were developed to quantify …

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Actin Nanokinematics Under The Influence Of Dc Electric Fields, Raghu Chilakamarri Dec 2005

Actin Nanokinematics Under The Influence Of Dc Electric Fields, Raghu Chilakamarri

Graduate Theses, Dissertations, and Problem Reports (ETD)

Molecular shuttles are nanometer-sized machines capable of transporting single molecules over small distances under user control. Actin-myosin system is a motor protein system, which naturally evolved within the cell for the nanoscale transport. The Acto-Myosin system is fuelled by ATP, converting chemical energy into linear motion. The gliding geometry movement of actin wherein the tails of the motors are adsorbed to the surface and the heads of the motors move the actin filaments across the surface can be exploited to achieve the directional control. The motion of actin in a specific direction and the surface of travel can be modified …

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Characterization And Investigation Of Molybdenum Carbides On Activated Carbon As Hydrogenation Catalysts, Christopher H. Clark Dec 2005

Characterization And Investigation Of Molybdenum Carbides On Activated Carbon As Hydrogenation Catalysts, Christopher H. Clark

Graduate Theses, Dissertations, and Problem Reports (ETD)

The formation of Mo2C and MoC supported on activated carbon was investigated in three different flowing reaction gas environments: H2, He, and CO. Additionally, benzene hydrogenation activity was studied for the catalysts reduced in each of these three different gas environments.;It was found through in-situ x-ray diffraction (XRD) that reducing in H2, ammonium heptamolybdate impregnated on activated carbon yielded 1-3 nm Mo2C particles. When the same material was calcinced in inert, 9 nm Mo2C particles were formed. If the reduction gas were CO, MoC particles having size less than 3 nm were formed. In all three reduction environments, the in-situ …

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Image Quality Assessment For Iris Biometric, Nathan D. Kalka Dec 2005

Image Quality Assessment For Iris Biometric, Nathan D. Kalka

Graduate Theses, Dissertations, and Problem Reports (ETD)

Iris recognition, the ability to recognize and distinguish individuals by their iris pattern, is the most reliable biometric in terms of recognition and identification performance. However, performance of these systems is affected by poor quality imaging. In this work, we extend previous research efforts on iris quality assessment by analyzing the effect of seven quality factors: defocus blur, motion blur, off-angle, occlusion, specular reflection, lighting, and pixel-counts on the performance of traditional iris recognition system. We have concluded that defocus blur, motion blur, and off-angle are the factors that affect recognition performance the most. We further designed a fully automated …

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Investigation Of Moisture Sensitivity Of Hot Mix Asphalt Concrete, Anu Ganesan Viswanathan Dec 2005

Investigation Of Moisture Sensitivity Of Hot Mix Asphalt Concrete, Anu Ganesan Viswanathan

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this research project is to evaluate impact of change in AASHTO T 283 test method on Superpave mix designs in West Virginia. The Lottman test method and Tunnicliff and Root test method were combined into Modified Lottman test procedure and published as AASHTO T 283 in 1985 and revised in 1989. Research was done to establish how the Superpave compaction and conditioning method affect the test results. As a result of this research, AASHTO T 283 test method was revised in 2003. In the 2003 version, use of gyratory compactor was allowed and changes were made to …

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Multiagent Autonomous Energy Management, Shilpa B. Ganesh Dec 2005

Multiagent Autonomous Energy Management, Shilpa B. Ganesh

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this thesis is to design distributed software agents for reliable operation of integrated electric power systems of modern electric warships. The automatic reconfiguration of electric shipboard power systems is an important step toward improved fight-through and self-healing capabilities of naval warships. The improvements are conceptualized by redesigning the electric power system and its controls. This research focuses on a new scheme for an energy management system in the form of distributed control/software agents. Multiagent systems provide an ideal level of abstraction for modeling complex applications where distributed and heterogeneous entities need to cooperate to achieve a common …

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Fiber Reinforced Polymer Composite Decks For Military Applications, Srikanth Mantri Dec 2005

Fiber Reinforced Polymer Composite Decks For Military Applications, Srikanth Mantri

Graduate Theses, Dissertations, and Problem Reports (ETD)

The U.S. Marine Corps is aiming to replace the M105 cargo trailers, M149 water tank trailers, and the M353 utility trailers with a new trailer platform known as the Medium Tactical Vehicle Replacement Trailers (MTVR-T). This project focused on developing a MTVR-T type trailer using Glass Fiber Reinforced Polymer composite decks. Systems & Electronics Inc. (SEI) provided the initial design for the prototype trailer. Prodeck 4 was chosen as the decking material for the prototype trailer.;A detailed FE model of the FRP deck and steel support assembly was built. Four operational and transportation load conditions as identified by SEI were …

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Development Of A Vehicle Road Load Model For Ecu Broadcast Power Verification In On-Road Emissions Testing, Nathan A. Moynahan Dec 2005

Development Of A Vehicle Road Load Model For Ecu Broadcast Power Verification In On-Road Emissions Testing, Nathan A. Moynahan

Graduate Theses, Dissertations, and Problem Reports (ETD)

West Virginia University (WVU) has become an industry leader in heavy-duty emissions testing and is continuously improving and updating their testing goals, procedures, and quality. As emissions testing is conducted at WVU in a real-world, on-road environment, engine parameter values are read through the test vehicle's electronic control unit (ECU) and recorded for use in data reductions. One significant value that is recorded by the WVU emissions measurement system is the ECU engine power output. Theses values are recorded and used to report vehicle's brake specific emissions values over a prescribed open-road test route. Because of the fact that the …

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Ensemble Learning For Ranking Interesting Attributes, Erik W. Sinsel Dec 2005

Ensemble Learning For Ranking Interesting Attributes, Erik W. Sinsel

Graduate Theses, Dissertations, and Problem Reports (ETD)

Machine learning knowledge representations, such as decision trees; are often incomprehensible to humans. They can also contain errors specific to the representation type and the data used to generate them. By combining larger; less comprehensible decision trees, it is possible to increase their accuracy as an ensemble compared to the best individual tree. The thesis examines an ensemble learning technique and presents a unique knowledge elicitation technique which produces an ordered ranking of attributes by their importance in leading to more desirable classifications. The technique compares full branches of decision trees, finding the set difference of shared attributes. The combination …

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Reconstruction Of Fingerprints From Minutiae Points, Jidnya A. Shah Dec 2005

Reconstruction Of Fingerprints From Minutiae Points, Jidnya A. Shah

Graduate Theses, Dissertations, and Problem Reports (ETD)

Most fingerprint authentication systems utilize minutiae information to compare fingerprint images. During enrollment, the minutiae template of a user's fingerprint is extracted and stored in the database. In this work, we concern ourselves with the amount of fingerprint information that can be elicited from the minutiae template of a user's fingerprint. We demonstrate that minutiae information can reveal substantial details such as the orientation field and class of the (unseen) parent fingerprint that can potentially be used to reconstruct the original fingerprint image.;Given a minutiae template, the proposed method first estimates the orientation map of the parent fingerprint by constructing …

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Investigation Of Internal Fluid Pressure In Cells, Jayendran Srinivasan Dec 2005

Investigation Of Internal Fluid Pressure In Cells, Jayendran Srinivasan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Articular cartilage is a connective tissue that covers the ends of bones in joints, providing a nearly frictionless bearing surface for efficiently transmitting loads to the underlying joint. It is made up of specialized cells called chondrocytes that are responsible for its growth and maintenance. Studies indicate that cells remodel the tissue in response to mechanical loading. However the mechanism by which cells sense and respond to mechanical signals is poorly understood.;Studies also suggest the presence of internal fluid pressure in cells and change in this fluid pressure is believed to play a role in cellular mechanical signal transduction. This …

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Empirical Study Of Error Behavior In Web Servers, Ajay Deep Singh Dec 2005

Empirical Study Of Error Behavior In Web Servers, Ajay Deep Singh

Graduate Theses, Dissertations, and Problem Reports (ETD)

The World Wide Web has been a huge success, bringing the Internet to widespread popularity. For Web based systems to deal effectively with increasing number of Web clients, it is very important to understand the basic fundamentals of Web workload and error characteristics. In this thesis we focus on detailed empirical analysis of Web server error characteristics and reliability based on the data extracted from eleven different web servers. First, we address the data collection process and describe the methods for extraction of workload and error data from Web logs. Then, we analyze the Web error characteristics which include unique …

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Graphical User Interface For Three-Dimensional Fe Modeling Of Composite Steel Bridges, Aditya Vuchi Dec 2005

Graphical User Interface For Three-Dimensional Fe Modeling Of Composite Steel Bridges, Aditya Vuchi

Graduate Theses, Dissertations, and Problem Reports (ETD)

The goal of bridge engineers has always been to design economical structures that are safe, serviceable and durable. In order to assess the performance and safety of these bridges, one of the analytical methods employed is finite-element (FE) modeling. This method involves breaking down the bridge structure into an assembly of finite-sized elements. The behavior of the elements and the overall structure can be obtained by formulating a series of constitutive relationships and algebraic equations that can be readily solved with computer processors.;Extensive research is being carried out to develop efficient finite element programs for bridge design. As a part …

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