Digital Commons Network^™

Hunting For Undetectable Metamorphic Viruses, Da Lin

Master's Projects

Commercial anti-virus scanners are generally signature based, that is, they scan for known patterns to determine whether a file is infected by a virus or not. To evade signature-based detection, virus writers have adopted code obfuscation techniques to create highly metamorphic computer viruses. Since metamorphic viruses change their appearance from generation to generation, signature-based scanners cannot detect all instances of such viruses. To combat metamorphic viruses, detection tools based on statistical analysis have been studied. A tool based on hidden Markov models (HMMs) was previously developed and the results are encouraging—it has been shown that metamorphic viruses created by a …

Improving Location Determination For Non-Gps Devices, Varun Sud

Master's Projects

Location awareness is one of the most important information that an individual looks for, both in an outdoor and indoor environment. One of the primary location determination techniques is the Global Positioning system, though this system provides a good accuracy in an outdoor environment, its accuracy decreases in densely populated areas and in an indoor environment a GPS system ceases to provide location information since the satellite signal cannot permeate through the roof and the walls. Various location estimation techniques have been proposed for location estimation in an indoor environment, some utilizing the signal strength of a wifi transmitter, while …

Removing The Digital Divide For Senior Web Users, Chiu Luk

Master's Projects

It is hard for the elderly to use the internet to find the resource they want. Usually help is needed for them to complete the task on the technology things. The main reason for this project is to research ideas on encourage senior people to make use of the web to locate helps they want, such as finding volunteers and professional helps. The scope of this project is to develop a new way of web access and content presentation methodologies that let senior people getting help from volunteers and various service providers more easily that incorporates social networking technology e.g. …

Computer Integration In Elementary And Secondary Schools: Variables Influencing Educators, Julie Mueller

Theses and Dissertations (Comprehensive)

Given the prevalence of computers in education today, it is critical to understand teachers’ perspectives regarding computer integration in their classrooms. Research identifying stages of implementation, and literature identifying barriers and supports, fall short of explaining what variables impact an educator’s ultimate decision to integrate technology in their instruction. The current research surveyed a heterogeneous sample of 185 elementary and 204 secondary teachers in order to provide a comprehensive summary of teacher characteristics and variables that discriminate teachers who integrate technology from those who do not. Discriminant Function Analysis (DFA) identified the following variables as making unique contributions to discriminating …

Saltwater Sacraments And Backwoods Sins: Contemporary Atlantic Canadian Literature And The Rise Of Literary Catholicism, Andrew Peter Atkinson

Theses and Dissertations (Comprehensive)

In the 1990s, Canadian readers were offered a new literary trend: the Atlantic Canadian Catholic novel. In this dissertation, I examine works from six authors whose writing reflects the scope of this trend and I argue for a consideration of their collective impact on our social imaginary. The bulk of my argument is devoted to an examination of the Catholic religious content in the five novels and one memoir: David Adams Richards’ Bay of Love and Sorrows (1998); Ann-Marie MacDonald’s Fall on Your Knees (1996); Lynn Coady’s Strange Heaven (1996); Wayne Johnston’s Baltimore’s Mansion: A Memoir (1999); Patrick Kavanagh’s Gaff …

Illusion Of Coexistence: The Waldorf Schools In The Third Reich, 1933–1941, Karen Priestman

Theses and Dissertations (Comprehensive)

From 1933 to 1941, the eight existing Waldorf schools in Germany were forced to close. As an alternative system of education, they were considered a threat to National Socialism. Yet, they were not systematically nor uniformly brought into line with the Nazi state through the process of Gleichschaltung. Very few studies address the history of the Waldorf schools under National Socialism, and those that do are invariably written by members of the Waldorf school community. By examining correspondence between the Waldorf school administrators and Nazi officials, this study helps to fill the void. This investigation reveals that the personalities …

Is Seagrass An Important Nursery Habitat For The Caribbean Spiny Lobster, Panulirus Argus, In Florida?, Donald C. Behringer, Mark J. Butler Iv, William Herrnkind, John H. Hunt, Charles A. Acosta, William C. Sharp

Biological Sciences Faculty Publications

Caribbean spiny lobster (Panulirus argus) settle preferentially in macroalgal-covered hard-bottom habitat, but seagrass is more prevalent in Florida (United States) and the Caribbean, so even low settlement of lobsters within seagrass could contribute substantially to recruitment if post-settlement survival and growth were high. We tested the role of seagrass and hard-bottom habitats for P. argus recruitment in three ways. We first explored possible density-dependent regulation of early benthic juvenile lobster survival within cages deployed in seagrass and hard-bottom habitats. Second, we compared settlement and survival of P. argus in both habitats, by comparing the recovery of microwire-tagged early …

Strict-Dominance Solvability Of Games On Continuous Strategy Spaces, Andrew Campbell Elkington

Theses and Dissertations (Comprehensive)

The concept of strict dominance provides a technique that can be used normatively to predict the play of games based only on the assumption of individual rationality. Such predictions, unlike those based on Nash equilibria, do not depend on players’ beliefs about the behaviour of others. One strategy strictly dominates another if and only if the payoff from the first strategy is strictly greater than the payoff from the second, no matter how the opponent(s) plays. It is possible for iterated elimination of strictly dominated strategies to remove all but a single choice for each player, in which case we …

Models For On-Line Social Networks, Noor Hadi

Theses and Dissertations (Comprehensive)

On-line social networks such as Facebook or Myspace are of increasing interest to computer scientists, mathematicians, and social scientists alike. In such real-world networks, nodes represent people and edges represent friendships between them. Mathematical models have been proposed for a variety of complex real-world networks such as the web graph, but relatively few models exist for on-line social networks.

We present two new models for on-line social networks: a deterministic model we call Iterated Local Transitivity (ILT), and a random ILT model. We study various properties in the deterministic ILT model such as average degree, average distance, and diameter. We …

Non-Biological Caregivers’ Experiences Of Fetal Alcohol Spectrum Disorder (Fasd) Support Groups, Sharon Porty

Theses and Dissertations (Comprehensive)

Caregivers of children with Fetal Alcohol Spectrum Disorder (FASD) are an extremely valuable resource, and supporting a stable and nurturing home environment may be the most achievable intervention to improve the child’s prognosis. Very little research has been done to explore effective interventions that focus on the FASD caregiver, rather than the child, for the purposes of preventing caregiver burnout and placement breakdown. The central purpose of this study is to explore non-biological parent caregivers’ experiences of FASD caregiver support groups in order to capture a better understanding of the value of this resource as one part of a continuum …

Laboratory Studies In Chemically Mediated Phosphorus Removal, Rebecca L. Gilmore

Theses and Dissertations (Comprehensive)

Chemically mediated phosphorus removal, done during wastewater treatment, is an effective means of reducing nutrient loads to sensitive environments. Although this method of treatment is widely used, the mechanism of removal is poorly understood. Moreover, phosphorus regulations for wastewater effluents are moving to concentration ranges of 10-100 μg P/L (total phosphorus). This is much lower than current regulations (∼0.1 ∼0.2 mg P/L as TP) required by municipalities (Takács et al., 2006a; Murthy et al., 2005). The analytical methods for low level phosphate analysis need to be optimized to perform reliably and accurately at these low levels. To accomplish this, absorbance …

Using Chemical, Optical And Biological Methods To Characterize Cu Complexation By Different Natural Organic Matter Sources Collected From Canadian Shield Waters, Keegan Andrew Hicks

Theses and Dissertations (Comprehensive)

The effects of natural organic matter (NOM) source on Cu complexation were characterized chemically, optically and biologically in soft waters. NOM from different Canadian Shield soft water lakes were concentrated using reverse osmosis and for comparison NOM was also sampled from a hard water source. NOM complexation capacity was assessed directly in Cu spiked solutions (with and without additions of NOM) by measuring free Cu activity using an ion selective electrode. Additional chemical and optical characterizations of NOM included specific absorbance coefficient (SAC; at 340 nm), excitation-emission matrix spectroscopy, protein content, and molecular weight fractionation (fraction of DOCkDa). The biological …

First-Passage Time Models With A Stochastic Time Change In Credit Risk, Hui Li

Theses and Dissertations (Comprehensive)

Many authors have used a time-changed Brownian motion as a model of log-stock returns. Using a Levy process as a stochastic time change, one obtains well known asset price models such as the variance gamma (VG) and normal inverse Gaussian (NIG) models. Following on the heels of these asset price models, it is natural to extend structural credit models by using a time-changed geometric Brownian motion and other jump-diffusion processes to model the value of a firm. To avoid the difficulties that arise in computing the associated first passage time distribution and in analogy to the time-changed Markov chain models, …

Mathematical Modeling Of Quantum Dots With Generalized Envelope Functions Approximations And Coupled Partial Differential Equations, Dmytro Sytnyk

Theses and Dissertations (Comprehensive)

No abstract provided.

An Idealized Model And Systematic Process Study Of Oxygen Depletion In Highly Turbid Estuaries, Stefan A. Talke, Huib E. De Swart, Victor De Jonge

Civil and Environmental Engineering Faculty Publications and Presentations

The sensitivity of oxygen depletion in turbid estuaries to parameters like freshwater discharge, depth, and sediment availability is investigated using an idealized model. The model describes tidally averaged circulation and suspended sediment concentration (SSC), which are input into an advection–diffusion sink module of dissolved oxygen (DO). Based on the analysis of field data collected in the Ems estuary, the modeled oxygen depletion rates are proportional to SSC. The model is calibrated to the observed variation of DO with SSC and temperature. Modeled DO closely tracks changes to the estuarine turbidity zone (ETZ): increased channel depth, decreased freshwater discharge, and decreased …

The Epidemiological Status Of Pav1, And The Effects Of Infection On Caribbean Spiny Lobster (Panulirus Argus) Condition, Olfaction, And Predation Risk, Donald C. Behringer, Mark J. Butler Iv, Jeffrey D. Shields

Biological Sciences Faculty Publications

No abstract provided.

Phytoplankton Blooms: Their Occurence And Composition Within Virginia's Tidal Tributaries, Harold G. Marshall, Todd A. Egerton

Biological Sciences Faculty Publications

Sporadic algal bloom development within a 10 year monitoring program in Virginia tidal tributaries of Chesapeake Bay is reviewed. These blooms were common events, characteristically producing a color signature to the surface water, typically short lived, occurring mainly from spring into autumn throughout different salinity regions of these rivers, and were produced primarily by dinoflagellates. The abundance threshold levels that would identify bloom status from a non-bloom presence were species specific, varied with the taxon's cell size, and ranged from ca. 10 to 10(4) cells mL(-1). Among the most consistent sporadic bloom producers were the dinoflagellates Akashiwo sanguinea, Cochlodinium …

The Use Of The Child Observation Record As A Tool For Predicting Early Literacy Skills In Preschool Children, Christopher R. Singer

Theses

Reading is an important part of a child's schooling. Identifying students with literacy difficulties early in the academic process can provide them with early intervention services to keep them from falling behind. The use of an observational assessment when dealing with preschoolers can yield vital information to help identify children who may be at risk for developing reading difficulties. The Dynamic Indicators of Basic Early Literacy Skills (DIBELS; Good & Kaminski, 2002) is a standardized assessment currently used to identify and evaluate students' reading abilities. The Child Observation Record (COR; High/Scope, 1992) is a preschool assessment tool used to assess …

An Investigation Into The Relationship Between Gender Perception Of Computing, Computer Self-Efficacy, And Computer Anxiety: A Comparison Study Between Chinese Females And American Females, Kittipong Laosethakul

WCBT Working Papers

It is believed that the perception that computing is a male domain has discouraged American women to participate in computing fields. Like the U.S., computing is also dominated by men in China. However, unlike the U.S., information technology is ranked the highest compared with other industries in term of career choices for Chinese female university graduates. This study investigates how computer anxiety and computer self-efficacy influence gender perception toward computing of Chinese female in comparison to American female. One of the findings indicated computer anxiety directly impacts gender perception toward computing of females in both cultures.

Gubernatorial Reputation And Vertical Tax Externalities: All Smoke, No Fire?, Per G. Fredriksson, Khawaja Mamun

WCBT Working Papers

This paper investigates whether reputation-building strategies guide U.S. governors’ responses to changes in federal cigarette taxes (i.e. vertical tax interactions). Using 1975-2000 state cigarette tax data, we find that reputation-building strategies affect the nature of vertical tax externalities. Lame duck governors exhibit a more negative response to changes in the federal cigarette tax. Thus, by reducing the state tax base and by causing a decline in the state tax, an increase in the federal tax rate reduces state tax revenues in states headed by lame ducks.

Fair Value Measurement: What’S New? Teaching Note, Danny A. Pannese, Alan Delfavero

WCBT Faculty Publications

As the international economic landscape has become increasingly integrated, the argument for the development of uniform global accounting standards now exists. In an effort to achieve this objective, the Financial Accounting Standards Board, as part of the ongoing Convergence Project with the International Accounting Standards Board, released groundbreaking accounting standards, FAS157 & FAS159, in 2006 and 2007, respectively. Modeled after an international accounting standard, these standards pertain to the use of fair value accounting (FVA), and are the first of their kind as they provide a definition of FVA and an option to expand its use to certain financial instruments. …

Admissions Viewbook, 2009-2010, Illinois State University, Office Of Admissions

Admissions Viewbook

Recruitment booklet created by Illinois State University's Office of Admissions

What Is A “Real” Argument?, G. C. Goddu

Philosophy Faculty Publications

Numerous informal logicians and argumentation theorists restrict their theorizing to what they call “real” arguments. But is there a clear distinction to be made between “real” and “non-real” arguments? Here I explore four possible accounts of the alleged distinction and argue that none can serve the theoretical uses to which the distinction is most often put.

Sample Size Calculation For Finding Unseen Species, Hongmei Zhang, Hal Stern

Faculty Publications

Estimation of the number of species extant in a geographic region has been discussed in the statistical literature for more than sixty years. The focus of this work is on the use of pilot data to design future studies in this context. A Dirichlet-multinomial probability model for species frequency data is used to obtain a posterior distribution on the number of species and to learn about the distribution of species frequencies. A geometric distribution is proposed as the prior distribution for the number of species. Simulations demonstrate that this prior distribution can handle a wide range of species frequency distributions …

The Power Of Collaboration: Worldcat's Copyright Evidence Registry, Roger V. Skalbeck

Law Faculty Publications

One of the underlying obstacles to reproducing older books is that there's no central place to look for information about what is protected by copyright and what may have passed into the public domain. Responding to this need, OCLC recently introduced a new system for tracking various copyright details for published books. The new service, still in beta, is called the WorldCat Copyright Evidence Registry (CER). It could be a very valuable resource for recording and sharing copyright status information.

The Effect Of Copt Crystallinity And Grain Texturing On Properties Of Exchange-Coupled Fe/Copt Systems, H. Oguchi, A. Zambano, M. Yu, Jason R. Hattrick-Simpers, D. Banerjee, Y. Liu, Z. L. Wang, J. P. Liu, S. E. Lofland, D. Josell, I. Takeuchi

Faculty Publications

The effect of the crystallinity and the grain texturing of CoPt hard layers on exchange coupled Fe/CoPt soft/hard magnetic systems was studied using gradient thickness multilayer thin films. We have studied the hard layer structures by transmission electron microscopy and x-ray diffraction, and characterized the exchange coupling interaction through magnetization loops obtained by the magneto-optical Kerr effect measurement. We found that exchange coupling strongly depends on the crystalline characteristics of the CoPt hard layer. There is correlation between the mixture of different grain orientations of the CoPt hard layer and coupling efficiency. In particular, interlayer coupling is enhanced when there …

Polymer Composite And Nanocomposite Dielectric Materials For Pulse Power Energy Storage, P. Barber, S. Balasubramanian, Y. Anguchamy, S. Gong, A. Wibowo, H. Gao, Harry J. Ploehn, Hans-Conrad Zur Loye

Faculty Publications

This review summarizes the current state of polymer composites used as dielectric materials for energy storage. The particular focus is on materials: polymers serving as the matrix, inorganic fillers used to increase the effective dielectric constant, and various recent investigations of functionalization of metal oxide fillers to improve compatibility with polymers. We review the recent literature focused on the dielectric characterization of composites, specifically the measurement of dielectric permittivity and breakdown field strength. Special attention is given to the analysis of the energy density of polymer composite materials and how the functionalization of the inorganic filler affects the energy density …

Alternative Dispute Resolution In Small Consensual Litigation: Too Much Of A Good Thing?, Mark S. Simms

Cardozo Journal of Conflict Resolution

The evolution of equity in tort has brought about the use of alternative methods of dispute resolution in reaching settlements in mass tort cases: "Indeed, equity is a progressive force in the law. When formal adjudication cannot provide a plain, adequate, and complete remedy, the system of ADR should be flexible enough to deliver individualized justice." It appears, however, that the use of ADR is not always a prudent exercise of the court's power, nor is it always conducive to individual justice. This Note examines the Gray case, in which the court appointed a special master, thereby assigning one man …

Copyright Law In And Under The Constitution: A Comparison Between American And German Constitutional Copyright Law, Tom Braegelmann

Cardozo Arts & Entertainment Law Journal

No abstract provided.

Protocol For Indicator Scoring In The Soil Management Assessment Framework (Smaf), Brian J. Wienhold, D. L. Karlen, S.S. Andrews, D. E. Stott

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Assessment tools are needed to evaluate agronomic management effects on critical soil functions such as carbon sequestration, nutrient cycling and water partitioning. These tools need to be flexible in terms of selection of soil functions to be assessed and indicators to be measured to ensure that assessments are appropriate for the management goals. The soil management assessment framework (SMAF) is being developed to meet this need. The SMAF uses soil physical, chemical and biological indicator data to assess management effects on soil function using a three-step process for (1) indicator selection, (2) indicator interpretation and (3) integration into an index. …