Digital Commons Network^™

Independent Subspace Analysis Using Locally Linear Embedding, Derry Fitzgerald, Eugene Coyle

Conference papers

While Independent Subspace Analysis provides a means of blindly separating sound souces from a single channel signal, it does have a number of problems. In particular the amount of information required for separation of sources varies with the signal. This is a result of the variance-based nature of Principal Component Analysis, which is used for dimensional reduction in the Independent Subspace Analysis algorithm. In an attempt to overcome this problem the use of a non-variance based dimensional reduction method, Locally Linear Embedding, is proposed. Locally Linear Embedding is a geometry based dimensional reduction technique. The use of this approach is …

Review Of The Coast Of Utopia By Tom Stoppard, David Wohl

College of Visual and Performing Arts Faculty Publications

A Review of The Coast of Utopia by Tom Stoppard, performed by the Royal National Theatre, London, UK, July 2002.

Nnp “Nowhere Near Perfect”, Thomas Power

Other Resources

The aim of this essay is to examine two views and conclusions on the now commonly recognised inadequacies of Net National Product as an indicator of aggregate national well-being. It outlines Dasgupta’s simplified model of the effect of environmental losses on NNP and reviews Douthwaite’s treatment of NNP.

Drum Transcription Using Automatic Grouping Of Events And Prior Subspace Analysis, Derry Fitzgerald, Robert Lawlor, Eugene Dermot Coyle Professor

Conference papers

While Prior Subspace Analysis (PSA) has proved an effective tool for transcribung mixtures of snare, kick drum and hi-hat, attempts to extend it to increased numbers of drum types have met with mixed results. To overcome this an automatic grouping method has been developed to group drum events on their similarity in frequency content. Combined with PSA this creates a system able to handle robustly greater numbers of drum types. The effectiveness of this method is demonstrated in a drum transcription algorithm.

Perspectives On An Epidemic: The Yellow Fever In 1793 Philadelphia, Karen Patyk

Constructing the Past

This article discusses the Yellow Fever epidemic of 1793, and how there are several different accounts of what happened then. It also notes that the official descriptions given by the doctors of the time are not the entire story and that they leave some important things out.

A Longitudinal Study Of The Effect Of Subcutaneous Estrogen Replacement On Bone In Young Women With Turner's Syndrome, G Khastgir, Jww Studd, Sw Fox, J Jones, J Aghband-Zadeh, Jwm Chow

School of Biomedical Sciences

No abstract provided.

Supporting Biosciences In The Nursing Curriculum: Development And Evaluation Of An Online Resource, Ka Gresty, Dre Cotton

School of Biomedical Sciences

Aims. The aim of this project was to develop and evaluate an online resource designed to improve the biosciences knowledge of preregistration nursing students. Background. A number of studies have identified lack of biological subject knowledge and anxiety about studying biosciences as serious problems for nursing students. The availability of a contextualized biological information resource prior to and early in their studies might help to reduce this fear and anxiety. Methods. The project used an action research approach, involving an initial analysis of the extent of the problems with biosciences encountered by our nursing students, followed by the development and …

A Simulation Model To Characterize Photolithography Process Of A Semiconductor Wafer Fabrication, Amr Arisha, Paul Young, Mohie El Baradie

Articles

The pressures on semiconductor manufacturers due to cost considerations, rapid growth of process technology, quality constraints, feature size reduction, and increasingly complex products are requiring ever higher efficiency from manufacturing facilities. The complexity of manufacturing high capacity semiconductor devices means that it is impossible to analyze the process control parameters and the production configurations using traditional analytical models. There is, therefore, an increasing need for effective models of each manufacturing process, characterizing and analyzing the process in detail, allowing the effect of changes in the production environment on the process to be predicted. The photolithography process is one of the …

Sensor Networks: An Overview, Malik Tubaishat, Sanjay Kumar Madria

Computer Science Faculty Research & Creative Works

Advances in hardware and wireless network technologies have created low-cost, low-power, multifunctional miniature sensor devices. These devices make up hundreds or thousands of ad hoc tiny sensor nodes spread across a geographical area. These sensor nodes collaborate among themselves to establish a sensing network. A sensor network can provide access to information anytime, anywhere by collecting, processing, analyzing and disseminating data. Thus, the network actively participates in creating a smart environment.

Two Distributed Algorithms For E-Ticket Validation Protocols For Mobile Clients, H. Mohanty, Sanjay Kumar Madria, T. Suman Kumar Reddy, R. K. Ghosh

Computer Science Faculty Research & Creative Works

The e-ticket (electronic ticket) validation problem has relevance in mobile computing environment because of the multiple submission of a ticket that is possible due to intermittent disconnections and mobility of hosts. Here, we propose protocols that are not only sensitive to disconnection but also to location. One of the proposed protocols is the variant of the distributed protocol proposed by Pedone (2000) for Internet users. This shows that a distributed protocol for static network can be restructured for distributed computation in a mobile computing environment. We have also proposed another protocol that uses a hierarchical location database of mobile hosts …

Using Psychotherapy Techniques To Reveal Misconceptions And Improve Learning, Paul Michael Santi, Michele M. Santi

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

When students are aware that they do not understand a concept, the main impediment to developing an understanding is their willingness to ask questions of the instructor or of fellow students. When students think that they understand a concept, but really have some significant misconception lodged in their mental picture of the concept, they may not supplant this misconception for years, if ever. Both situations can be corrected if the students identify the need to ask questions, are brave enough to do so in the traditional academic settings, and if the answers adequately address the actual misunderstanding (which may be …

Fuzzy Logic In Collective Robotic Search, Nian Zhang, Donald C. Wunsch

Electrical and Computer Engineering Faculty Research & Creative Works

One important application of mobile robots is searching a geographical region to locate the origin of a specific sensible phenomenon. We first propose a fuzzy logic approach using a decision table. A novel fuzzy rule based was designed. And then a fuzzy search strategy is adopted by utilizing the three tier centers of mass coordination. Experimental results show that fuzzy logic algorithm is an efficient approach for the collective robots to locate the target source. In addition, noise and the position of the target affect the searching result.

Locating Moving Objects Over Mobile Sensor Network, Arvind Nath Rapaka, Sandeep Bogollu, Donald C. Wunsch, Ravindra Nath

Electrical and Computer Engineering Faculty Research & Creative Works

The purpose of our on going research would be to track entities, which enter their field of vision over the sensor network. Based on their sightings, they maintain a dynamic cache that can be queried by a base station- a stationary orfixed node. Since transmitting messages consumes a lot of energy, as against local processing and moreover the limited energy in sensor node does not allow heavy duty computing, we need to develop algorithms that will ensure efficient computing and minimal transmission without degradation of performance. and also data is stored locally, and memory is finite, the nodes must choose …

Neural Networks Skin Tumor Diagnostic System, Zhao Zhang, William V. Stoecker, Randy Hays Moss

Electrical and Computer Engineering Faculty Research & Creative Works

In this study, a malignant melanoma diagnostic system is designed using a straightforward neural network with the back-propagation learning algorithm. Eleven features are automatically extracted from skin tumor images. The correct diagnostic rate of this system is better than the average rate of 16 dermatologists who based their diagnosis with only the slide images.

Computational Enhancement Of Genetic Algorithm Via Control Device Pre-Selection Mechanism For Power System Reactive Power/Voltage Control, G. Krost, Ganesh K. Venayagamoorthy, G. A. Bakare, U. O. Aliyu

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, the application of a novel and computationally enhances genetic algorithm (GA) for solving the reactive power dispatch problem is presented. In order to attain a significant reduction in the computational time of GA, a systematic procedure of reactive power control device pre-selection mechanism is herein proposed to choose a-priori subsets of the available control devices, which maximally influence buses experiencing voltage limit violations. The GA reactive power dispatch module then accesses such judiciously pre-selected control device candidates to determine their optimal settings. A pragmatic scheme aimed at further curtailing the number of the final control actions entertained …

Dual Heuristic Programming Excitation Neurocontrol For Generators In A Multimachine Power System, Ganesh K. Venayagamoorthy, Donald C. Wunsch, Ronald G. Harley

Electrical and Computer Engineering Faculty Research & Creative Works

The design of nonlinear optimal neurocontrollers that replace the conventional automatic voltage regulators for excitation control of turbogenerators in a multimachine power system is presented in this paper. The neurocontroller design is based on dual heuristic programming (DHP), a powerful adaptive critic technique. The feedback variables are completely based on local measurements from the generators. Simulations on a three-machine power system demonstrate that DHP-based neurocontrol is much more effective than the conventional proportional-integral-derivative control for improving dynamic performance and stability of the power grid under small and large disturbances. This paper also shows how to design optimal multiple neurocontrollers for …

An Investigation Of The Concept Of Balance In Children Ages 6–9: Logic And Protologic Identifiable In Making Mobiles, Seon Chun

Dissertations and Theses @ UNI

This research was conducted to explore children's construction of protologic (foreshadowing of operations) in the context of experience with balance mobiles in a constructivist setting and to explore the usefulness of making mobiles in promoting children's development of the concept of balance.

The statement of the problem is (a) Can constructivist principles of cognitive development be used to understand children's progress in the course of educational activities involving balance? If so, how? What does the progressive construction of notions about balance look like in children's behaviors? and (b) Does children's understanding of balance improve after experimenting with making mobiles?

The …

Design And Evaluation Of A Pdf Print Estimating System, Mengtsung Tai

Dissertations and Theses @ UNI

This research consisted of designing and evaluating portable document format (PDF) print estimating system to commercial systems. Taking into account functionality, reliability, standardization, and integration, the conventional design method (Pressman, 1997) was used to develop the print estimating system. Considering the printer's viewpoint, added features make the system function online and offline and compatible with all common computer platforms. After the system was developed, experts and entry-level users evaluated the system for software usability (Nielsen, 2000; Shneiderman, 1998). A total of 26 experts and 38 entry-level users responded to 14 questions about usability in a personal interview survey. Statistical analysis …

The Design And Evaluation Of A Plc-Based Model Predictive Controller For Application In Industrial Food Processes, Bryan T. Griffen

Dissertations and Theses @ UNI

Model Predictive Control (MPC) is a viable control strategy for industrial processes that display relatively large variations in the process variable, have complex process variable interactions, or display a large amount of process deadtime. The objective of using MPC in manufacturing is to reduce overall process variability, the result being an increase in process accuracy, precision and efficiency. This study focused on the implementation of model predictive control techniques on an industrial sugar cooking process. The goal was to implement a successful MPC solution directly on a programmable logic controller (PLC) rather than on a personal computer (PC). Although there …

How Far Is Too Far - Tracing Assets In Medicaid Estate Recovery, Janel C. Frank

North Dakota Law Review

No abstract provided.

The Development Of An Interactive Multimedia Based Professional Development, James New

Theses : Honours

The role of the teacher has changed over time such that teachers are asked to augment their own specialist knowledge with skills from other domains, for example information technology. This study has examined the perceptions and experiences of teachers and speech pathologists involved in the production of an instructive Interactive Multimedia (IMM) product to deliver Professional Development (PD). The individuals involved in this project were teachers from the High Valley Language School (HVLS) -a specialised primary school. The study used a social action research methodology, which allowed the researcher to build theories from emergent data. The data collection process consisted …

A Deception Based Framework For The Application Of Deceptive Countermeasures In 802.11b Wireless Networks, Suen Yek

Theses : Honours

The advance of 802.11 b wireless networking has been beset by inherent and in-built security problems. Network security tools that are freely available may intercept network transmissions readily and stealthily, making organisations highly vulnerable to attack. Therefore, it is incumbent upon defending organisations to take initiative and implement proactive defences against common network attacks. Deception is an essential element of effective security that has been widely used in networks to understand attack methods and intrusions. However, little thought has been given to the type and the effectiveness of the deception. Deceptions deployed in nature, the military and in cyberspace were …

Device Structure Effects On Electrical Crosstalk In Backwall Illuminated Cmos Compatible Photodiode Arrays, Paul Vernon Jansz

Theses : Honours

This research has made a comparative investigated of crosstalk in backside illuminated and frontside illuminated single junction photodiode and vertical double junction photodiode CMOS compatible pixels, using a commercial 2D device simulation package, SEMICAD DEVICE (1994). Comparison of pixel total, electron and hole quantum efficiency response and Absorption Volume data is undertaken. This is so that the underlying carrier drift-diffusion dynamics responsible for optimal pixel response resolution may be qualitatively understood, allowing prediction of even more optimal photodiode pixel configurations. The effect of varying the double junction and single junction photodiode pixel's geometry on response resolution is considered. Only for …

The Religions Of Ancient Israel: A Synthesis Of Parallactic Approaches [Review] / Ziony Zevit., Gerald A. Klingbeil

Andrews University Seminary Studies (AUSS)

No abstract provided.

Deception In Genesis: An Investigation Into The Morality Of A Unique Biblical Phenomenon [Review] / Michael James Williams., Jiří Moskala

Andrews University Seminary Studies (AUSS)

No abstract provided.

A World History Of Christianity [Review] / Edited By Adrian Hastings., Trevor O'Reggio

Andrews University Seminary Studies (AUSS)

No abstract provided.

Evolution, Theology, And Method. Part 2: Scientific Method And Evolution, Fernando L. Canale

Andrews University Seminary Studies (AUSS)

No abstract provided.

The Role Of Tradition In Modern And Contemporary Theology: Mediating Epistemic Divides, Kwabena Donkor

Andrews University Seminary Studies (AUSS)

No abstract provided.

Current Perspectives On Petrine Ministry And Papal Primacy, Denis Fortin

Andrews University Seminary Studies (AUSS)

No abstract provided.

The Intra-Jewish Dialogue In 4 Ezra 3:1-9:25, P. Richard Choi

Andrews University Seminary Studies (AUSS)

No abstract provided.