Digital Commons Network^™

Doers Of The Living Word: Gospel Ideology And The African American Womanist Novel, Rebecca Erin Huskey

Dissertations

In Playing in the Dark, Toni Morrison issues a charge and illuminates the challenge that she and other African American writers face in defining the self through a racially oppressive language:

Neither blackness nor "people of color" stimulates in me notions of excessive, limitless love, anarchy, or routine dread. I cannot rely on these metaphorical shortcuts because I am a black writer struggling with and through a language that can powerfully evoke and enforce hidden signs of racial superiority, cultural hegemony, and dismissive "othering" of people and language which are by no means marginal or already and completely known and …

New Estimators Of A Circular Median, Sauwanit Ratanaruamkarn

Dissertations

The specific properties of probability distributions on a circle require different definitions of several statistical concepts. For example, a median that can always be found for linear data not always exists on the circle. Several estimators of a circular median were proposed, lately by Otieno (2002), Otieno and Anderson - Cook (2003). Their work is, however, focused on the "preferred direction" which coincides with the median, mean and mode in the case of symmetric, unimodal distributions. This dissertation is focused on the estimators of a population median in a wider range of population distributions on a circle including distributions with …

Investigating The Effects Of Real-Time Visual Feedback On Computer Workstation Posture, Sigurdur Oli Sigurdsson

Dissertations

The purpose of this study was to examine the effects of a package intervention that included discrimination training, real-time visual feedback, and self-monitoring on postural behavior at a computer workstation in a simulated office environment. A total of 21 participants were screened for participation, and eight of those participated throughout the study. A non-concurrent multiple baseline design across participants was used to assess the effects of the interventions across three postural variables. Following an information-only phase, participants were exposed to the intervention for the lowest stable postural variable. For most targeted postural variables, the intervention implemented in this study led …

Localization In Wireless Sensor Networks, Mark Terwilliger

Dissertations

With the proliferation of wireless sensor networks, providing location-aware technology and services to new applications have become important for developers. Localization is the problem of determining the positions of nodes in an ad hoc network. With the constrained resources of network sensors, providing robust localization services remains a fundamental research challenge facing the entire sensor network development community.

The initial localization problem that we addressed was to design and develop a working system that could locate equipment, such as a laptop or video projector. Ferret, the localization system developed, uses two different ranging techniques to help locate an object to …

Testing Procedures For Group Sequential Clinical Trials With Multiple Survival Endpoints, Rebecca C. Scherzer

Dissertations

This research gives methods for sequential monitoring of survival data in clinical trials with multiple endpoints. We illustrate the use of marginal proportional hazards models and other survival models with various group sequential methods to test multiple survival endpoints at K interim analyses. To adjust for multiplicity at each interim analysis, we consider and extend methods developed by Tang and Geller (1999), Follmann, et al. (1994), and others. These methods are motivated, compared, and evaluated using survival data from a clinical study and using simulation studies.

Study Of Decarbonization Reaction Of Sodium Carbonate By Sodium Borates, Zaki Yusuf

Dissertations

Today, the chemical process industries are facing many challenges in the wake of skyrocketing energy price. Paper industry as a whole is also not only looking into improving the process efficiency of its chemical recovery process but also is exploring to meet these challenges with gasification based energy/chemical recovery process. Borate based autocausticizing technology appears promising, provided it could be effectively integrated into both types of chemical recovery processes based on the principles of chemistry and chemical engineering.

My research was focused on the decarbonization reactions of sodium carbonate by sodium metaborate (NaBO₂) and sodium diborate (Na_{4 …}

Terrorism And College Students: A Generation's Response To September 11, 2001, Robert Mason Wild

Dissertations

The terrorist attacks on the United States of September 11, 2001 marked a significant cultural turning point for Americans. The tragic destruction of the World Trade Towers , the damage to the Pentagon and the loss of thousands of civilian lives brought an end to the optimism and feelings of security and invulnerability that marked the decade of the 1990s. Students who were enrolled in college at the time of the attacks were affected as well. This qualitative study examines the emotions and attitudes of 50 students enrolled a mid-sized, private research institution on September 11, 2001. The study explores …

Text Mining With Exploitation Of User's Background Knowledge : Discovering Novel Association Rules From Text, Xin Chen

Dissertations

The goal of text mining is to find interesting and non-trivial patterns or knowledge from unstructured documents. Both objective and subjective measures have been proposed in the literature to evaluate the interestingness of discovered patterns. However, objective measures alone are insufficient because such measures do not consider knowledge and interests of the users. Subjective measures require explicit input of user expectations which is difficult or even impossible to obtain in text mining environments.

This study proposes a user-oriented text-mining framework and applies it to the problem of discovering novel association rules from documents. The developed system, uMining, consists of two …

Facial Feature Representation And Recognition, Chao-Fa Chuang

Dissertations

Facial expression provides an important behavioral measure for studies of emotion, cognitive processes, and social interaction. Facial expression representation and recognition have become a promising research area during recent years. Its applications include human-computer interfaces, human emotion analysis, and medical care and cure.

In this dissertation, the fundamental techniques will be first reviewed, and the developments of the novel algorithms and theorems will be presented later. The objective of the proposed algorithm is to provide a reliable, fast, and integrated procedure to recognize either seven prototypical, emotion-specified expressions (e.g., happy, neutral, angry, disgust, fear, sad, and surprise in JAFFE database) …

Color Image Quality Measures And Retrieval, Yan-Yu Fu

Dissertations

The focus of this dissertation is mainly on color image, especially on the images with lossy compression. Issues related to color quantization, color correction, color image retrieval and color image quality evaluation are addressed. A no-reference color image quality index is proposed. A novel color correction method applied to low bit-rate JPEG image is developed. A novel method for content-based image retrieval based upon combined feature vectors of shape, texture, and color similarities has been suggested. In addition, an image specific color reduction method has been introduced, which allows a 24-bit JPEG image to be shown in the 8-bit color …

Multilevel Adaptive Security System, Hongwei Li

Dissertations

Recent trends show increased demand for content-rich media such as images, videos and text in ad-hoc communication. Since such content often tends to be private, sensitive, or paid for, there exists a requirement for securing such information over resource constrained ad hoc networks. In this work, traditional data security mechanisms, existing ad hoc secure routing protocols and multilevel security are first reviewed. Then a new system, called the Multilevel Adaptive Security System, which incorporates the multilevel security concept at both the application layer and the network layer, is proposed to provide adaptive security services for data and routing processes.

MLASS …

Ligand-Based Design Of Dopamine Reuptake Inhibitors : Fuzzy Relational Clustering And 2-D And 3-D Qsar Modleing, Milind Misra

Dissertations

As the three-dimensional structure of the dopamine transporter (DAT) remains undiscovered, any attempt to model the binding of drug-like ligands to this protein must necessarily include strategies that use ligand information. For flexible ligands that bind to the DAT, the identification of the binding conformation becomes an important but challenging task. In the first part of this work, the selection of a few representative structures as putative binding conformations from a large collection of conformations of a flexible GBR 12909 analogue was demonstrated by cluster analysis. Novel structurebased features that can be easily generalized to other molecules were developed and …

Mobile Ad Hoc Networks For Intelligent Systems, Zhigang Wang

Dissertations

Advances in wireless technology and portable computing along with demands for high user mobility have provided a major promotion toward the development of ad hoc networks. Mobile ad hoc networks feature dynamic topology, self-organization, limited bandwidth and battery power of a node. They do not rely on specialized routers for path discovery and traffic routing. Research on ad hoc networks has been extensively investigated in the past few years and related work has focused on many of the layers of the communications architecture.

This research intends to investigate applications of MANET for intelligent systems, including intelligent transportation system (ITS), sensor …

Dynamic Measuring Tools For Online Discourse, Jeffrey S. Saltz

Dissertations

When evaluating participation within an Asynchronous Learning Network (ALN), current best practices include counting messages and reviewing participant surveys. To understand the impact of more advanced dynamic measurement tools for use within an ALN, a web-based tool, known as iPET (the integrated Participation Evaluation Tool), was created. iPET, which leverages Social Network Analysis and Information Visualization techniques, was then evaluated via an empirical study. This research demonstrates that using a tool such as iPET increases participation within an ALN without increasing facilitator workload. Due to the fact that active online discussion is a key factor in the success of an …

Bioinformatics Framework For Genotyping Microarray Data Analysis, Kai Zhang

Dissertations

Functional genomics is a flourishing science enabled by recent technological breakthroughs in high-throughput instrumentation and microarray data analysis. Genotyping microarrays establish the genotypes of DNA sequences containing single nucleotide polymorphisms (SNPs), and can help biologists probe the functions of different genes and/or construct complex gene interaction networks. The enormous amount of data from these experiments makes it infeasible to perform manual processing to obtain accurate and reliable results in daily routines. Advanced algorithms as well as an integrated software toolkit are needed to help perform reliable and fast data analysis.

The author developed a Matlab_TM based software package, called …

Environmental Justice Education And Atmospheric Particulate Analysis In Urban Environmental Health Policy Development : Indoor Airborne Particulate Concentrations In Preschools Of Asthmatic Children In Newark, Rita L. Thornton

Dissertations

Analysis suggests that several residential areas in Newark, New Jersey (USA) have Black/African-American and Hispanic populations, which may be "at high risk" with respect to the adverse health effects of particulate air pollution. This study analyzes the community locations and evaluates literature and other available air pollution data for the target communities in the city of Newark. The study focuses on asthma or reactive airway diseases as a target health risk. It also performs data collection on particulate pollutants and levels of trace metals in particulate matter in target communities and schools of preschool children in two of the five …

Using Content And Process Scaffolds For Collaborative Discourse In Asynchronous Learning Networks, Irene Wong-Bushby

Dissertations

Discourse, a form of collaborative learning, is one of the most widely used methods of teaching and learning in the online environment. Particularly, in large courses, discourse needs to be 'structured' to be effective. Historically, technology-mediated learning (TML) research has been inconclusive with often conflicting results. To address this issue, TML research needs greater breadth and depth in pedagogical grounding. The purpose of this research is to build and test an original, technology-mediated, discourse-centered model called the Asynchronous Learning Network Cognitive Discourse Model (ALNCDM) grounded in pedagogy. Cognitive discourse is defined as discourse on conceptual subject matter. The model is …

Automatic Solar Feature Detection Using Image Processing And Pattern Recognition Techniques, Ming Qu

Dissertations

The objective of the research in this dissertation is to develop a software system to automatically detect and characterize solar flares, filaments and Corona Mass Ejections (CMEs), the core of so-called solar activity. These tools will assist us to predict space weather caused by violent solar activity. Image processing and pattern recognition techniques are applied to this system.

For automatic flare detection, the advanced pattern recognition techniques such as Multi-Layer Perceptron (MLP), Radial Basis Function (RBF), and Support Vector Machine (SVM) are used. By tracking the entire process of flares, the motion properties of two-ribbon flares are derived automatically. In …

Prediction Of Service Load Of Concrete Structures After Cracking Using Ultrasonic Technique, Xuezeng Wu

Dissertations

The objective of this study is to investigate the cracking behavior of fractured concrete structures and to introduce a new approach to assess their remaining service lives. A novel ultrasonic technique is utilized to detect crack propagation in notched beams of mortar, plain concrete and reinforced concrete. The study showed that crack growth and microcrack zone in cementitious composites can be quantitatively detected by the ultrasound technique.

To predict crack propagation during the fracture process in plain concrete, an effective compliance fracture model is proposed. A large fracture process zone is incorporated in the analytical model by means of an …

Quantifying Software Architecture Attributes, Bo Yu

Dissertations

Software architecture holds the promise of advancing the state of the art in software engineering. The architecture is emerging as the focal point of many modem reuse/evolutionary paradigms, such as Product Line Engineering, Component Based Software Engineering, and COTS-based software development.

The author focuses his research work on characterizing some properties of a software architecture. He tries to use software metrics to represent the error propagation probabilities, change propagation probabilities, and requirements change propagation probabilities of a software architecture. Error propagation probability reflects the probability that an error that arises in one component of the architecture will propagate to other …

The Relationship Between Leadership Traits And Church Growth Among Pastors Of Free Churches In Germany, Edgar Machel

Dissertations

Problem. Many German Christian denominations have been losing members year by year for the past five decades. There are more and more voices that question the way pastors function as leaders. Therefore, this study looked at the differences of personality traits among pastors of Free Churches in Germany in the context of church growth. The leading research question was. What kind of leadership traits, behaviors, and attitudes are favorable to lead a church toward growth and to return stagnating churches to vibrancy?

Methodology. The “Business-focused Inventory of Personality” was sent out to 1,100 Pentecostal, Baptist, and Adventist pastors, of …

Academic Performance And Engagement Of Educational Opportunity Program Students In A College Algebra Extended Class At The State University Of New York, New Platz, Courtney Anthony Pindling

Dissertations

Problem

The purpose of this study was to describe the academic performance of a group of Educational Opportunity Program (EOP) students in a College Algebra Extended Program (CAEP) at the University of New York, New Paltz. Generally, EOP students are admitted with low mathematics placement scores. In the past, they would have been required to do remedial math. However, since college remedial math is no longer available, the CAEP was implemented to remedy this problem. This study was conducted to examine how a small group of EOP students performed in this course.

Method

A descriptive research design was used to …

Perceptions Of The Evidence Of A Servant Leadership Culture Among Educators In The P-12 School System In The North American Division Of Seventh-Day Adventists, Donovan B. Ross

Dissertations

Problem Statement. The Seventh-day Adventist church has consistently advocated that adherents to this religion should be Christ-like in every aspect of their lives. They should be of service to others as they create a community of believers who are loving, kind, and considerate of others. These ideals form some of the characteristics of servant leadership. The question therefore is whether servant leadership is being practiced in the P-12 school system. No study related to the presence and practice of servant leadership in the P-12 school system of the NAD has been conducted. Research was needed to determine the perceptions of …

They Who Persist: A Longitudinal Quantitative Case Study Of A University Student Cohort, Kenneth J. Marra Phd

Dissertations

Since the first published work on student persistence in 1929 by Edgerton and Toups, there have been literally thousands of studies that have attempted to unravel the mystery of why some higher education students persist through to graduation while others do not. Many of these studies have been qualitative in nature, restricting their generalizability, while those that have used the few existing national databases to quantitatively study persistence have been restricted to looking within a single year at multiple institutions. What is clearly missing from the literature are methodologically sound, year-to-year persistence studies conducted at individual institutions. This deficiency in …

Personalization For English Learners At A Small Conversion High School, Mary Jewell Edd

Dissertations

One of the most notable ways in which large, comprehensive high schools are working to meet the needs of the increasing numbers of English Language Learners (ELLs), and other students who may be struggling with academics, is by subdividing into smaller schools. One of the most appealing features of small schools is their emphasis on personalized instruction for students. While it takes many forms, personalizing education means knowing all students well and designing curriculum that meets their individual needs. Personalized learning environments hold enormous potential for improving the educational experiences, and even very lives, of English learners. The purpose of …

Socioeconomic Characteristics As Factors Of Academic Success On The Exame Nacional De Cursos Among Undergraduate Students Of Selected Study Programs In Brazil, Josmar Sionti Arrais De Matos

Dissertations

This study investigated the possible relationships among socioeconomic characteristics as factors influencing the success levels of Brazilian students. Data were provided by the 2002 Exame Nacional de Cursos [National Examination of Study Programs], or ENC , in five cursos . For this study, the following programs, representing three levels of prestige, were selected: low (Modern Letters and History), middle (Law), and high (Medicine and Dentistry). The purpose was to gain a deeper understanding of the issues associated with relationships among various socioeconomic characteristics, as well as to gain a more global understanding of the implications of the socioeconomic process as …

Moral Implications Of Darwinian Evolution For Human Reference Based In Christian Ethics: A Critical Analysis And Response To The "Moral Individualism" Of James Rachels, Stephen Bauer

Dissertations

The topic. This dissertation explores and analyzes James Rachels's efforts to prove that Darwin's theory of evolution has catastrophic implications for traditional Christian ethics.

The purpose. The purpose of this dissertation is to explore and evaluate the question of whether or not protology affects ethics. In particular, I propose to distill the implications of evolutionary views of origins for ethics, mainly in reference to the issue of human preference over nature in ethics. I propose to disclose Rachels's understanding of the implications of evolution on human preference (greater protections for human beings over non-humans) in ethics (such as biblical-Christian ethics), …

Data Warehousing And Decision Making In Higher Education In The United States, David Lester Heise

Dissertations

Problem. Compared to the business world, higher education has a lower level of acceptance and a lower rate of adoption of data warehousing for decision making. Studies into the way data warehouses are used in higher education and the extent to which they are used are hard to find. Accordingly, this research examines the use of data warehousing in higher education and its role in decision making.

Method. Internet survey research method was used in this study. I asked college and university presidents to provide me with contact details of senior decision makers and technology managers from their institutions. …

The Effect Of Socioeconomic Status On Year-To-Year Persistence Of First-Generation And Continuing Generation Students At Two-Year And Four-Year Institutions: Developing A Conceptual Model, Jim S. Settle

Dissertations

Estimating the persistence of first-time students from the first year to the second year of college is a growing social and financial concern for postsecondary education. Studying how socioeconomic status affects year-to-year persistence may help to identify and assist those students who had socioeconomic profiles most likely to indicate challenges to year-to-year persistence.

This study used data from the Beginning Postsecondary Students Longitudinal Study (BPS:96/98). BPS is a nationally representative survey designed to provide additional information about the patterns of educational attainment and persistence for a subset of the more than 51,000 students included in the NPSAS:96 survey. This study …

Online Support For Multivariate Integration, Shujun Li

Dissertations

In this dissertation, we present an online problem solving environment for multivariate numerical integration. To build an environment for users with various backgrounds, we address issues of Web interface support for end-users, remote application programming interfaces for distributed system programmers, visualization of multivariate integrand functions for problem analysis, and highly efficient integration methods. Compared to previous implementations, our new load balancing schemes increase the scalability of parallel integration and hence are suitable for large scale computations. A parallel integration service, called PI service, was implemented based on Web services technologies to support both remote integration and remote visualization. The multivariate …