Digital Commons Network^™

Illinois State: For Alumni Of Illinois State University, Winter 2002-2003, Illinois State University, University Marketing And Communications

State: The Magazine of Illinois State University (1999-present)

Illinois State University alumni magazine

Boundary Effects On Multiplication Noise In Thin Heterostructure Avalanche Photodiodes: Theory And Experiment [Al/Sub 0.6/Ga/Sub 0.4/As/Gaas], Majeed M. Hayat, Oh-Hyun Kwon, Shuling Wang, Joe C. Campbell, Bahaa E.A. Saleh, Malvin Carl Teich

Electrical and Computer Engineering Faculty Research and Publications

The history-dependent recurrence theory for multiplication noise in avalanche photodiodes (APDs), developed by Hayat et al., is generalized to include inter-layer boundary effects in heterostructure APDs with multilayer multiplication regions. These boundary effects include the initial energy of injected carriers as well as bandgap-transition effects within a multilayer multiplication region. It is shown that the excess noise factor can be significantly reduced if the avalanche process is initiated with an energetic carrier, in which case the initial energy serves to reduce the initial dead space associated with the injected carrier. An excess noise factor reduction up to 40% below the …

Maximum-Likelihood Image Estimation Using Photon-Correlated Beams, Majeed M. Hayat, Muhammad Sajjad Abdullah, Adel Joobeur, Bahaa E.A. Saleh

Electrical and Computer Engineering Faculty Research and Publications

A theory is presented addressing the fundamental limits of image estimation in a setup that uses two photon-correlated beams. These beams have the property that their photon arrivals, as a point process, are ideally synchronized in time and space. The true image represents the spatial distribution of the optical transmittance (or reflectance) of an object. In this setup, one beam is used to probe the image while the other is used as a reference providing additional information on the actual number of photons impinging on the object. This additional information is exploited to reduce the effect of quantum noise associated …

Moisture Interactions With Pharmaceuticalpol Ymerjc Film Coatings, Ravi S. Pappu

Open Access Master's Theses

It is a well-known fact that water can act as a detrimental variable in performance of pharmaceutical dosage forms. Derivatives of various starches and cellulose are widely used as excepients, generally in high proportions to the total amount making up the dosage form. A complete understanding of the uptake of moisture by cellulose polymers is important because moisture-polymer interaction affects various properties such as compressibility and stability. In this study I) hydroxypropyl methylcellulose (HPMC), 2) modified HPMC (SEPPIC^®), 3) microcrystaline cellulose containing carrageenan (Lusterclear^®) were used for studies of moisture polymer interaction. The interaction of moisture …

Development, Implementation, And Evaluation Of A Training Program Using In-Service Training And A Computer-Assisted Instruction Program For The 344th Air Refueling Squadron, Mark David Lilly

Abraham S. Fischler College of Education ETD Archive

Over the past several years, the Air Force has realized a decline in the experience levels of its workforce. This decline, in conjunction with the influx of replacement personnel, has resulted in training gaps within the ranks of the United States Air Force.

The problem is that the 344th Air Refueling Squadron, as a training oriented organization, has realized gaps in its aircrew experience levels based on the continual personnel turnover of its aircrew workforce. The purpose of this project was to develop, implement and evaluate an inservice training program and a computer-assisted instruction software program for aircrew members of …

Widgets To Windows: The "Webolution" Of Commercial Sales, Joseph A. Zavaletta, Edward B. Hymson

Computer Law Review and Technology Journal

Five years ago, a new "nation" developed unlike any other in history - it has no government, no political borders, no buildings, no army, no citizens, no elections, and no leader. But by all accounts, this nation has the most dynamic economic engine in history. Based on recent studies by the Center for Research in Electronic Commerce at the University of Texas at Austin ("CREC"), if this nation were ranked by gross domestic product, its 2000 revenues of $830 billion would give it the twelfth largest gross domestic product in the world, ahead of Canada and behind Mexico. With an …

Center For The Advancement Of Teaching Annual Report, 2001-2002, Illinois State University, Center For The Advancement Of Teaching

Annual Reports - Center for Integrated Professional Development

Annual report of the Center for the Advancement of Teaching at Illinois State University

The Least Of Evils For Judicial Selection, Leslie Southwick

MC Law Review

Symposium - The Judicial Selection

Disappearing Youth In American Politics? Campus, Community, And Political Participation By Undergraduate Students, Stephanie Reinhart '02

Res Publica - Journal of Undergraduate Research

Public participation in American politics has long been discussed as deficient at best, falling far short of democracy’s goal of an enlightened and participatory citizenry. In no age group is this more apparent than America’s young adults, particularly those in their early years of voting eligibility. This segment of the population has been repeatedly criticized for their disinterest and lack of involvement in politics, primarily because only a small number of young adults vote in elections. In fact, several researchers argue that young adults are less likely to participate in politics than ever before (Astin, Parrott, Korn, and Sax 1997; …

Masculine Threat And Anti-Gay Attitude, Chad Corbley '02

Honors Projects

In a pretest, male and female participants completed the PAQ, a measure of self perceived masculinity and femininity. Only male participants (though they were not aware of this fact) were contacted to return for the second part of the study. Participants were hooked up to psychophysiological recording equipment and took part in one of three conditions. In the masculine threat condition, they took a test ostensibly measuring masculine knowledge and received false negative feedback. In the general threat condition, participants took a test ostensibly measuring general knowledge and received the same feedback. The no threat or control condition was exactly …

Dimensionality-Reducing Expansion, Boundary Type Quadrature Formulas, And The Boundary Element Method, Tian-Xiao He

Scholarship

This paper discusses the connection between boundary quadrature formulas constructed by using solutions of partial differential equations and boundary element schemes.

Closed Loop Identification Of A First Order Plus Dead-Time Process Model Under Pi Control, Tony Kealy, Aidan O'Dwyer

Conference papers

This paper discusses the estimation of the parameters of a first order plus dead-time process model using the closed-loop step response data of the process under proportional plus integral (PI) control. The proportional gain and the integral time, in the PI controller, are chosen such that the closed-loop step response exhibits an under-damped response. From this response data, five characteristic points are used to determine a second order plus dead-time model and subsequently, the frequency response of the closed-loop system. Knowing the dynamics of the closed-loop system and the dynamics of the controller, the open-loop dynamics of the process can …

Comparison Of Open And Closed Loop Process Identification Techniques In The Time Domain, Tony Kealy, Aidan O'Dwyer

Conference papers

This paper describes seven methods to identify a mathematical model for a real process with a time delay. The process is the Process Trainer, PT326 from Feedback Instruments Limited. Six of the methods use the step response data and one of the methods uses the impulse response data for identification.

Factors For Effective Learning Groups In Face-To-Face And Virtual Environments, Charles R. Graham

Faculty Publications

Group work has been a powerful instructional method used in face-to-face learning environments. To date, group work has not reached the same prominence in distance learning environments where there is a strong emphasis on independent or individualistic learning. This may be due in part to the perceived difficulty of engaging students in working together at a distance, as well as a general lack of knowledge about the factors that contribute to effective virtual group work. This paper reviews the literature related to creating effective learning groups in face-to-face and virtual environments. Research from the following four areas was used: cooperative …

Using Transition Probability Geostatistics With Modflow, Norman L. Jones, J. R. Walker, S. F. Carle

Faculty Publications

This paper describes a technique for applying the transition probability geostatistics method for stochastic simulation to a MODFLOW model. Transition probability geostatistics has several advantages over traditional indicator kriging methods, including a simpler and more intuitive framework for interpreting geological relationships and the ability to simulate juxtapositional tendencies such s fining-upwards sequences. The indicator arrays generated by the transition probability simulation are converted to layer elevation and thickness arrays for use with the new Hydrogeologic Unit Flow (HUF) package in MODFLOW 2000. This makes it possible to preserve complex heterogeneity while using reasonably sized grids.

The Adaptive Advantage Of Symbolic Theft Over Sensorimotor Toil: Grounding Language In Perceptual Categories, A Cangelosi, S Harnad

School of Engineering, Computing and Mathematics

Using neural nets to simulate learning and the genetic algorithm to simulate evolution in a toy world of mushrooms and mushroom-foragers, we place two ways of acquiring categories into direct competition with one another: In (1) "sensorimotor toil,” new categories are acquired through real-time, feedbackcorrected, trial and error experience in sorting them. In (2) "symbolic theft,” new categories are acquired by hearsay from propositions – boolean combinations of symbols describing them. In competition, symbolic theft always beats sensorimotor toil. We hypothesize that this is the basis of the adaptive advantage of language. Entry-level categories must still be learned by toil, …

Genetic Interventions: (Yet) Another Challenge To Allocating Health Care, Arti K. Rai

San Diego Law Review

Much of the existing literature on genetic intervention addresses questions of discrimination or reproductive decisionmaking. Although this book discusses those questions,

it takes as its major focus an issue that is perhaps even more vexing—the issue of how we should, from the standpoint of distributive justice, allocate genetic interventions. In other words, given the wide range of genetic interventions that may become available, how should we divide such interventions? Implicit in this problem is the reality that scarcity will prevent individuals from having access to all genetic interventions that would be of benefit to them. In this brief Essay, I …

A Rawlsian Approach To Solving The Problem Of Genetic Discrimination In Toxic Workplaces, Robert A. Bohrer

San Diego Law Review

The Human Genome Project (HGP) may well be the beginning of a technological leap that rivals the advent of the Industrial Age.2 The principal goal of the project is to map and fully sequence3

the twenty- four chromosomes that contain the complete genetic contents of a

normal human cell. The human genome consists of twenty-two pairs of chromosomes plus the X and Y chromosomes that determine gender.4 As would be expected for such a technologically adventurous undertaking, the HGP has been accompanied by a substantial outpouring of concern about the ethical, legal, and social issues that will arise from this …

Does Technological Enhancement Of Human Traits Threaten Human Equality And Democracy?, Michael H. Shapiro

San Diego Law Review

This Article outlines some of the moral, legal, and general policy difficulties that societies and individuals will face if technological enhancements via germ line and somatic mechanisms become possible. It identifies and analyzes some of the conceptual structures necessary to explain the nature of these difficulties, suggests some alternative basic scenarios—such as greater or lesser scarcity of technological enhancement resources, impacts on how we perceive each other, and different remediation patterns—and then maps and reverse maps the projected technological developments against the value and legal structures. This Article also describes and comments on what may seem to be, from our …

Liberty Not Fully Evolved?: The Case Of Rodney Levake And The Right Of Public School Teachers To Criticize Darwinism, Francis J. Beckwith

San Diego Law Review

In 2001, the Minnesota Court of Appeals reviewed the case of Rodney LeVake, a public school teacher who sought to enhance his school

district’s required science curriculum by suggesting to students alternative viewpoints inconsistent with that curriculum. This case, LeVake v. Independent School District, should be of great interest to legal theorists. Its holding, and the reasoning on which it is based, may serve as a Socratic provocation regarding the extent to which public school teachers have constitutional academic freedom (apart from statutory requirements or permission) to voluntarily include criticisms of and alternatives to evolutionary theory.

Ethnography And The Idealized Accounts Of Science In Law, David S. Caudill

San Diego Law Review

n Part I, I confirm the idealizations of science in law and their implications for legal scholarship and practice. In Part II, I describe the ethnographic method used by science studies scholars, with reference to my own ethnographic analysis of interviews with three neuroscientists. I conclude Part II by identifying various social aspects of science that comprise a complex picture of scientific activity. In Part ill, I discuss the implications of ethnomethodology for trial practice, including deposition analysis, Daubert-type hearings, cross-examination techniques, and drafting jury instructions. Part IV addresses anticipated criticisms of my arguments.

Remote Sensing: A New Tool For Automobile Inspection And Maintenance, Donald H. Stedman

Fuel Efficiency Automobile Test Publications

Federally-mandated emissions testing of automobiles in Colorado has decreased emissions, albeit much less than predicted. Recent breakthroughs in manufacturing low emitting vehicles and in remote sensing of a moving car’s exhaust could enable Colorado to phase out or drastically increase the efficiency of treadmill-style testing centers. Remote sensing technology now allows a piece of equipment small enough to fit in a van to assess the mass of pollutants per gallon of fuel emitted by a passing car. Once an emissions scofflaw is identified, a number of options exist:

· immediate pullover and ticketing by a police officer;

· a “smart …

Investigation Into The Control Of An Upper-Limb Myoelectric Prosthesis, Steven Michael Roberts

School of Engineering, Computing and Mathematics Theses

This thesis presents research that extends current knowledge in the area of upper-limb prosthesis design and control. A study of myoelectric signals (MES)'s using both NHS and other equipment has resulted in identification of the signal source and transmission/detection issues. A globally comprehensive and up to date survey of myoelectric research has revealed new and long-term research paths. This thesis challenges the old model in interpreting the MES signals by providing and collecting evidence to suggest a new approach to future investigation. The historical description of a stochastic, non-deterministic MES has been shown by this research to be incomplete. An …

Pitch Estimation For Noisy Speech, Azar Khurshid

School of Engineering, Computing and Mathematics Theses

In this dissertation a biologically plausible system of pitch estimation is proposed. The system is designed from the bottom up to be robust to challenging noise conditions. This robustness to the presence of noise in the signal is achieved by developing a new representation of the speech signal, based on the operation of damped harmonic oscillators, and temporal mode analysis of their output. This resulting representation is shown to possess qualities which are not degraded in presence of noise. A harmonic grouping based system is used to estimate the pitch frequency. A detailed statistical analysis is performed on the system, …

Evaluation Of Lntelligent Medical Systems, Julian Bernard Tilbury

School of Engineering, Computing and Mathematics Theses

This thesis presents novel, robust, analytic and algorithmic methods for calculating Bayesian posterior intervals of receiver operating characteristic (ROC) curves and confusion matrices used for the evaluation of intelligent medical systems tested with small amounts of data. Intelligent medical systems are potentially important in encapsulating rare and valuable medical expertise and making it more widely available. The evaluation of intelligent medical systems must make sure that such systems are safe and cost effective. To ensure systems are safe and perform at expert level they must be tested against human experts. Human experts are rare and busy which often severely restricts …

The Development Of A Novel Suspension Arm With 2-Dimensional Actuation, For Use In Advanced Hard Disk Drives, Chibesa Chilumbu

School of Engineering, Computing and Mathematics Theses

As magnetic computer disks are developed to ever-greater data storage densities, the accuracy required for head positioning is moving beyond the accuracy provided by present technology using single-stage voice-coil motors in hard disk drives. This thesis details work to develop a novel active suspension arm with 2-dimensional actuation for use in advanced hard disk drives. The arm developed is capable of high-bandwidth data tracking as well as precision head flying height control motion. High-bandwidth data tracking is facilitated by the use of piezoelectric stack actuator, positioned closer to the head. The suspension arm is also capable of motion in the …

Flow Shop Scheduling Problem: A Computational Study, Amr Arisha, Paul Young, Mohie El Baradie

Conference papers

A computational study has been developed to obtain optimal / near optimal solution for the flow shop scheduling problem with make-span minimization as the primary criterion and the minimization of either the mean completion time, total waiting time or total idle time as the secondary criterion. The objective is to determine a sequence of operations in which to process ‘n’ jobs on ‘m’ machines in same order (flow shop environment) where skipping is allowed. The Simulation approach for deterministic and stochastic flow shop scheduling has been developed. It reads and manipulates data for 500 jobs on 500 machines. Different factorial …

Key Skills By Design: Adapting A Central Web Resource To The Departmental Context, Claire Mcavinia

Journal Articles

Web-­based delivery of support materials for students has proved to be a popular way of helping small teams to implement key skills policies within universities. The development of ‘key’ or ‘transferable’ skills is now encouraged throughout education, but resources (both in terms of staffing and budget) tend to be limited. It is difficult for key skills teams to see learners face to face, and not feasible to print or distribute large amounts of paper­-based material. Web-­based delivery presents a means of overcoming these problems but it can result in generic study skills material simply being published online without due consideration …

On-Road Remote Sensing Of Automobile Emissions In The Denver Area: Year 3, Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman

Fuel Efficiency Automobile Test Publications

No abstract provided.

2002 : Part - Time Courses, Dublin Institute Of Technology

DIT Publications

Book containing information and full list of part - time courses for 2002 entry.

2002/2003 academic calendar.

Faculty structure and key contacts at DIT.