Digital Commons Network^™

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 …

Psychosocial Responses By Adolescent Male Victims To Peer Bullying, Karin Eve Reuter-Rice Phd

Dissertations

Bullying remains a pervasive problem in most schools throughout the nation. Peer-bullied victims report higher levels of depression, suicidal ideation, anxiety, and concerns regarding their safety in school. Reactions of victims to peer bullying have been extreme, as in the cases of the rampage school shooters. Primarily, current research has not focused on the high school adolescent, although most school shooters arise from that age group. The overall purpose of this study was to examine the psychosocial responses by adolescent male victims to peer bullying. Research questions addressed the frequency and severity of peer-victimization, distress, anxiety, and their perception of …

Heavy Metal Adsorption On Iron Oxide And Iron Oxide-Coated Silica : Macroscopic, Spectroscopic, And Modeling Studies, Ying Xu

Dissertations

To accurately model metal mobility and bioavailability in soils and sediments, systematic sorption studies are needed using representative and well-characterized minerals. Two important surfaces are iron oxide and silica, which are ubiquitous and associated with one another in the environment playing important roles in metal distribution. The objectives of this research are to develop models for predicting speciation and mobility of toxic trace metal ions in groundwater, soils, and sediments when competing ions are present. A model system for soils and sediments, iron oxide-coated silica, was synthesized; the degree of coatings was highly sensitive to the particle size of silica …

An Automata-Based Automatic Verification Environment, Yi Meng

Dissertations

With the continuing growth of computer systems including safety-critical computer control systems, the need for reliable tools to help construct, analyze, and verify such systems also continues to grow. The basic motivation of this work is to build such a formal verification environment for computer-based systems.

An example of such a tool is the Design Oriented Verification and Evaluation (DOVE) created by Australian Defense Science and Technology Organization. One of the advantages of DOVE is that it combines ease of use provided by a graphical user interface for describing specifications in the form of extended state machines with the rigor …

Effect Of Heavy Metals On Salt March Biota, Kallaya Suntornvongsagul

Dissertations

Environmental restoration of disturbed, degraded and potentially contaminated wetland sites aims for the persistent and sustainable re-establishment of biological communities and important wetland functions. An ecologically informed restoration strategy presupposes some understanding of these system processes, but also of potential impacts on contaminants in the environment for risk assessment, long-term management, and potential cost-effective mitigative measures. In this study, potential effects of moderate heavy metal contamination in sediments of the urban salt marsh Harrier Meadow, NJ, were evaluated on growth performance of the common salt marsh plant S. patens and associated arbuscular mycorrhizal fungi (AMF) colonizing its roots. Growth performance …

Worry, Kristen Tracy

Dissertations

The poems that make up Worry investigate themes of feminine struggle, identity, and survival. They move at a fast pace, and many of the metaphors are drawn from the animal kingdom.

Pyramidal Staff Training: Teaching Play And Manding To Children With Autism And Developmental Disabilities, Koji Takeshima

Dissertations

This study involved pyramidal staff training and the teaching of play and manding to children with autism and developmental disabilities in an early intervention program. The following training components were sequentially introduced to each technician: (a) a written procedure; (b) video modeling; (c) a slide show and checklist, combined with video modeling; and (d) feedback. The trainees improved their skills in teaching play as these training components were introduced, and the children's performance in play and manding subsequently improved. For the skills of teaching play, the core component of the training that resulted in the largest improvement varied across technicians. …

Incidence And Clinical Predictors Of Risk Factors For Inappropriate Shock In Patients With Implantable Cardioverter-Defibrillators, Shu-Ling Lo Phd

Dissertations

Sudden cardiac death (SCD) is a major unresolved medical problem worldwide. Although Implantable Cardioverter-Defibrillators (ICD) are highly effective in diagnosing and treating life threatening arrhythmias, inappropriate shock therapy (IST) occurs in approximately 5-20% of ICD recipients. IST results in pain, anxiety, induction of ventricular arrhythmias, decreased battery longevity, and even death. Researchers studying clinical predictors of IST have drawn findings based on single case studies with small samples or with outdated data. This study filled this gap by describing the incidence and co-existing clinical predictors of IST. Methodology This descriptive, retrospective study analyzed the incidence and clinical predictors of IST …

Development Of An Analogue Of A Response-Class Hierarchy, Daniel B. Shabani

Dissertations

Within the operant conditioning literature, there exists the concept of the functional response class. A functional response class is defined as a collection of responses that all produce the same outcome. If the members of a response class occur in a predictable order, a response-class hierarchy is said to exist. A hierarchy refers to a specific type of response class in which each member of the response class may be temporally determined along various dimensions (e.g., response effort, immediacy of reinforcement, magnitude of reinforcer). The response-class hierarchy has received relatively little conceptual attention over the years and, not surprisingly, there …

Starlight Drive, William R. Reynolds Jr.

Dissertations

Starlight Drive is a book-length manuscript of poems that reflects my abiding interest in how poetry can use the fiction writer's tools, such as characterization and setting, without sacrificing the beauty of the lyric. Like Rodney Jones, I write about my north Alabama childhood filtered through the lens of my adult life here in the Midwest. My field of perception does not begin in a cotton field like Jones', but on a cul-de-sac in a middle-class neighborhood of Huntsville, where my father was an engineer for NASA. The poems in my manuscript show my protagonist moving through a landscape peopled …

The Effects Of Dextromethorphan On Response Acquisition With Delayed Reinforcement, Thomas B. Morgan

Dissertations

The current study examined in 2-h sessions the effects of intraperitoneal injections of dextromethorphan (DM) (0.0, 40.0, 60.0, and 80.0 mg/kg) on the acquisition of lever-press responding in rats that were exposed to a two-lever procedure in which responses on the reinforcement lever (RL) were reinforced with food after a 15-s resetting delay and responses on the cancellation lever cancelled a scheduled reinforcer. Response acquisition was observed at all drug doses. A decrease in RL responses, food deliveries, and the number of subjects that acquired responding was observed at the highest dose of DM. All doses of DM increased latency …

Optimization Of Sequential Purification Of Beta-Glucosidase From Tricoderma Reesei In Aqueous Two-Phase System, Shalini Gautam

Dissertations

A novel sequential technique was developed for the purification of a valuable enzyme, beta-glucosidase, from microorganism Tricoderma reesei. The fungus T. reesei produces cellulose degrading enzymes, called cellulases: beta-glucosidase, endo-glucanase and exo-glucanase and low molecular weight proteins. For specific applications, the enzyme must be separated from other contaminants. The sequential technique, that included affinity precipitation with chitosan followed by separation with an aqueous two-phase system (ATPS), was implemented for the purification of beta-glucosidase from the culture filtrate of T. reesei.

The cultivation medium (nutrient) was optimized for the production of betaglucosidase from T. reesei cell culture. Treatment of the …

Development Of Adsorption Filtration Process For Virus Removal For Drinking Water Treatment, Vishal Vijay Gawarikar

Dissertations

Recent monitoring studies have indicated that many ground water (GW) sources would benefit from the development of effective technologies for removing viruses. Although reverse osmosis can achieve high log removal it is not economical. The main objective of this study is to test and validate a novel adsorption filtration (AF) technology for removing viruses from GW sources for drinking water production in New Jersey.

The convective diffusion of viruses to adsorbent particle surfaces in flow packed beds (FPB) enhances their removal efficiency if the adsorbent particle size can be decreased to about 100 microns. The development of effective virus removal …

Modeling Of Flexible Drug-Like Molecules : Qsar Of Gbr 12909 Analog Dat/Sert Selectivity, Kathleen Mary Gilbert

Dissertations

The dopamine reuptake inhibitor GBR 12909 and related dialkyl piperazine and piperidine analogs have been studied as agonist substitution therapies acting on the dopamine transporter (DAT) to treat cocaine addiction. Undesirable binding to the serotonin transporter (SERT) can vary greatly depending on the specific substituents on the molecule. This study uses Comparative Molecular Field Analysis (CoMFA) and Comparative Molecular Similarity Indices (CoMSIA) techniques to determine a stable and predictive model for DAT/SERT selectivity for a set of flexible GBR 12909 analogs.

Families of analogs were constructed from six pairs of naphthyl-substituted piperazine and piperidine templates identified by hierarchical clustering as …

Evaluating Rhizodegradation Of Petroleum Hydrocarbons And Polycyclic Aromatic Hydrocarbons In Wetland Sediments Containing Spartina Patens, Robert J. Lippencott

Dissertations

Biodegradation of petroleum hydrocarbons (PHC) and 16 polycyclic aromatic hydrocarbon (PAH) compounds was evaluated in sediments from a stormwater basin that was a former salt marsh at an active oil refinery. Spartina patens were grown in basin sediments during a field study and a greenhouse study over three consecutive growing seasons. Ninety percent (90%) survival was observed in field study plots containing sediments with <12% PHC. In the greenhouse study, planted and bulk sediments were monitored for PHC, PAH, microbial density, nutrients, pH, redox and root biomass at 2.5 and 7.5 cm in sediments with <12% PHC. The sediments contained on average 6.5% to 9.5% PHC and 56 to 124 parts per million (ppm) total PAH. The plants exhibited a 95% survival rate and added from 1% to 2% root biomass to the sediment. Microbial densities in planted sediments were significantly higher than in bulk sediments (p<0.05). Oxidizing conditions were prevalent in all treatments at both depths; however, reducing conditions developed in the planted sediments at 7.5 cm. PHC was 35% to 37% lower in the planted sediments vs. bulk sediment at the end of the study. Planted sediment PAH concentrations were generally lower than in bulk sediments. Low MW PAHs (2 and 3-Rings) were either absent or at relatively low concentrations in all treatments. Phenanthrene concentrations in bulk sediments did not change, but were reduced by 95% in planted sediments (p<0.01), with half-life estimates of 141 to 165 days at 2.5 cm. Temporal changes in high MW PAHs ( 4-Rings) were not observed over the greenhouse study period. Differences in PAH concentrations between planted and bulk sediments exhibited a decreasing trend with PAH molecular weight. Evaluation of differences in planted and bulk sediment PAH concentrations suggests that lower MW PAHs degrade better under oxidizing conditions, and higher MW PAHs under reducing conditions in the planted sediments. Comparison of planted and bulk sediment PAH concentrations links depth and redox conditions to decreases in PAH as a function of PAH MW. Therefore, it was concluded that spatio-temporal variations and cycling of redox conditions should be considered to properly evaluate biodegradation of PAH.

Just-In-Time Hypermedia, Li Zhang

Dissertations

Many analytical applications, especially legacy systems, create documents and display screens in response to user queries "dynamically" or in real time . These documents and displays do not exist in advance, and thus hypermedia must be generated 'just in time" -automatically and dynamically.

This dissertation details the idea of 'just-in-time" hypermedia and discusses challenges encountered in this research area. A fully detailed literature review about the research issues and related research work is given. A framework for the 'just-in-time" hypermedia compares virtual documents with static documents, as well as dynamic with static hypermedia functionality. Conceptual 'just-in-time" hypermedia architecture is proposed …

The Control Of Frequency Of A Conditional Oscillator Simultaneously Subjected To Multiple Oscillatory Inputs, Christina L. Ambrosio

Dissertations

A conditional oscillator is one that requires input to oscillate. An example of such is the gastric mill network of the stomatogastric ganglion of the crab Cancer borealis which requires modulatory input from outside the stomatogastric ganglion and fast input from the pyloric network of the animal in order to become active. This dissertation studies how the frequency of the gastric mill network is determined when it is simultaneously subjected to two different rhythmic inputs whose timing may be mismatched. We derive a mathematical model of the gastric mill network and deduce that the difference in timing between the pyloric …

The Role Of Puf3 Protein Interactions In The Regulation Of Mrna Decay In Yeast Saccharomyces Cerevisiae, Shervin Sean Houshmandi

Dissertations

The regulation of messenger RNA (mRNA) metabolism is an important step in proper gene expression. In many eukaryotic organisms this regulation can be mediated by a group of highly conserved RNA-binding proteins known as the Puf family of proteins. The yeast Saccharomyces cerevisiae has several proteins that belong to this family. One of the yeast Puf proteins, Puf3p, binds and regulates the COX17 mRNA, which codes for a protein involved in mitochondrial copper transport. Specifically, Puf3p stimulates the decay of COX17 mRNA. However, the precise mechanism of Puf3p binding and decay regulation is yet unknown. The goal of this research …

Omesubel A Ureor: Workforce Development In Palau From Pre-Contact To 1999, Patrick Ubal Tellei Edd

Dissertations

After being a ward of many nations for over 250 years, the Republic of Palau gained its independence on October 1, 1994. One of the many challenges facing this young nation is the workforce preparation of its people to engage in nation building. After many years of being subjugated by foreign governments, the people have developed a taste of material consumerism. This has driven people away from their subsistence way of life in favor of a market driven economy which calls for infrastructure development that cannot be accomplished if there is a nonexistent skilled workforce to undertake this challenge. To …

Cognitive Orthotics For Students With Cognitive Disabilities, James V. Yanna

Dissertations

This study examined the effectiveness of a hand-held computer to guide an individual with a moderate cognitive impairment as he or she completed a complex daily living task. Performance was compared with that occasioned by a human supervisor. A third condition, assistance first from a human supervisor, and then by the computerized orthotic, was also evaluated. The task selected was a baking task.

Subjects were nine students, ranging in age from 17 to 24 years. All subjects were classified as cognitively impaired according to the Michigan Special Education Rules and Regulations. Assessment information showed most to be performing at a …

From Presence To “E-Presence” In Online Nursing Education, Lisa M. Kaiser Phd, Msn, Bsn, Rn

Dissertations

Online web-based course offerings are now common in many institutions of higher education In response to the current and severe nursing shortage, estimated to represent a 20% vacancy rate by the year 2015, (Tarkin, 2003) many more universities have created online nursing courses for registered nurses wishing to continue their education in nursing. The National League for Nursing (NLN) set research priorities that urged exploration of the impact that technology has on the content and nature of teaching and learning in nursing education (1999). Using a series of separate synchronous, online focus groups and 1:1 interviews with nurse educator experts …

The Three-Contingency Model Of Self-Management, Holly C. Harrison

Dissertations

The goal of this dissertation is to evaluate people's needs for self-management and the effectiveness of their use of the three-contingency model of self-management. This model prescribes a set of self-management procedures that can be applied to self-manage virtually any behavior. College students used these procedures to manage their own behavior as part of an extended psychology-course assignment.

This evaluation began with the Procrastination Survey, the results of which assessed the frequency of the students' self-management problems. The self-management interventions of up to 168 students were then evaluated using their self-reported performance data and an anonymous survey. The performance data …

Bufadienolides In The Chemical Defenses Of The Toads, Bufo Americanus And Bufo Fowleri, Catherine E. Merovich

Dissertations

I investigated the steroidal chemical defenses (bufadienolides) of Bufo americanus and Bufo fowleri. By the nature of their complex, biphasic life cycles, toads, like other amphibians are important components of aquatic and terrestrial habitats and are prey to numerous invertebrates and vertebrates. Bufadienolides are presumed to be important anti-predatory compounds although much of their chemical ecology is poorly understood. I investigated (1) ontogenetic variation in bufadienolides, (2) bufadienolides from adult parotoid secretion, (3) effectiveness of bufadienolides against a terrestrial predator, and (4) effectiveness of bufadienolides against an aquatic predator. I hypothesized that B. americanuswould have a more extensive …

Changes In Glial Cell Line Derived Neurotrophic Factor And Nerve Growth Factor Expression With Development, Age, Exercise And Hypertension, Bertha C. Rebimbas-Cohen

Dissertations

Neurotrophic factors are important for neuronal growth, survival, and maintenance of cell phenotype. Glial cell line-derived neurotrophic factor (GDNF) affects sensory, autonomic and somatic motor neurons and nerve growth factor (NGF) affects sensory and sympathetic neurons. NGF and GDNF are produced by cardiac muscle and have potent effects on sensory and autonomic neuronal innervation of blood vessels. Neural innervation plays a key role in blood vessel function. Since neural innervation of blood vessels may be regulated by growth factors, we wanted to determine what changes would occur to NGF and GDNF levels with maturity, exercise and hypertension.

Changes in GDNF …

Meaningful Learning: Reconciling The Tensions Between Constructivist And Environmentally Sustainable Pedagogy, Nancy Van Kannel-Ray

Dissertations

Critics of constructivism argue, in many ways correctly, that this approach to education is culturally and environmentally damaging because constructivism may not develop an understanding of the interdependence between the human community and the world in which people live. Advocates for environmentally sustainable pedagogy argue the importance of understanding patterns of thinking that allow communities to live sustainably. The purpose of this study is to resolve the tensions between the two pedagogical frameworks: constructivism and environmental sustainability.

The tensions are resolved in two ways. First, there are forms of constructivism that align in viable ways with the criteria critics argue …

The Glucose And Insulin Responsiveness Of The Rat Glucose-6-Phosphate Dehydrogenase Promoter, Daryl Arkwright-Keeler

Dissertations

The regulation of expression of some enzymes involved in glucose homeostasis and fat metabolism requires both insulin and glucose to elicit an effect, while the regulation of others requires only one. Glucose-6-phosphate dehydrogenase (G6PDH), an important enzyme involved in glucose homeostasis, has been shown to be transcriptionally regulated by carbohydrate feeding in rat liver, a diet regime that increases the levels of both glucose and insulin. Our lab had previously shown that insulin induces expression of G6PDH, thus we wanted to determine if glucose also induced G6PDH expression and if so, are the glucose and insulin responses mediated through identical …

Understanding Photosynthesis And Plant Cellular Respiration As “Nested Systems”: The Characterization Of Pre-Service Teachers’ Conceptions, Mary H. Brown

Dissertations

This dissertation project focused on pre-service elementary teachers' conceptions of the plant processes of photosynthesis and cellular respiration as being connected, occurring at multiple ecological levels, and working within "nested systems." Participants enrolled in a biology course designed for elementary education majors provided their views of the processes through a series of tasks with a peer, a semi-structured interview, and clarified both photosynthesisand plant cellular respiration directly following classroom instruction on the two topics. The instructor of the course was interviewed after a preliminary analysis of the participants' responses. Data were analyzed using the qualitative analysis computer program The Ethnograph …

Hope—Heartbeat Of Adult Education: A Phenomenological Inquiry, Phillip L. Moulden

Dissertations

This phenomenological study of the phenomenon—hope identified two essential meaning structures (“change” and “human agency”) in the experiences communicated by the Adult Educators interviewed. It was also discovered that hope is an energy that interacts with Affective, Relative (Re-lay-tive), and Cognitive energies in the lives of the research participants. Understanding how “change” and “human agency” can be aligned with these A.R.C. energies holds implications for further research and the practice of Adult Education.

Characterizing The Evolution Of Operating Systems, Yi Peng

Dissertations

Examining the development and trends in software engineering technology is a huge undertaking. It is constantly evolving and affected by a large number of factors, which are themselves driven by a wide range of sub-factors. This dissertation is part of a long term project intended to analyze software engineering technology trends and how they evolve. This project is intended to analyze operating system trends and what are the factors that drive how they evolve. Basically, the following questions will be answered: "How to watch, predict, adapt to, and affect operating system's evolution trends?"

In previous research, YF Chen used statistical …

Development And Application Of Fractionation Procedure For Drinking Water Organic Matters, Yong Pu

Dissertations

USEPA mandates a control of disinfection by-products (DBPs) in finished drinking water and recommends reduction of natural organic matters (NOM), DBP precursors, to achieve this regulatory goal. Studies relating NOM with DBP include fractionation of water samples, characterization of collected organic fractions, fractions' formation potential tests, and jar or similar tests to remove NOM. This study discussed a current resin fractionation procedure on principle, procedure, and its efficiency when applied to water samples of low NOM (< 5mgIL). The primary objective of this research is to develop a fractionation procedure intended for water of low NOM by carefully applying mass balance concept through each fraction's fractionation and a selection of stable ion exchange resins. A new protocol was presented with triple columns of XAD-8 adsorption resin, one column of AG-MP-50 cationic resin, and another column of WA 10 weak anionic resin in sequence. This protocol was experimented and confirmed for its efficiency (±10% loss of mass) with samples from Canal Road (CR) and Raritan Millstone (RM) surface water treatment plants (WTPs) in central New Jersey. The second objective of this study is to develop a statistical model with a potential of online delineation of organic fractions of NOM. The resulting model based on samples of Passaic Valley Water Commission (PVWC) WTP in northern New Jersey was applied to predict organic fractions of samples from CR and RM plants. Paired T-test (paired t ratio 1.15 < t critical 2.02) indicated a good correlation between the predicted and actual fraction concentration. Finally, samples of Middlesex Water Company (MWC) were fractionated and Trihalomethane formation potential tests (THMFP) on collected fraction showed hydrophilic matters possessed a higher potential to produce TTHM in finished water than hydrophobic matter. Jar tests indicated while coagulation was effective in removing hydrophobic matter, it may not be optimum for removal of hydrophilic matter.

This study developed an accurate fractionation procedure for low NOM waters. It provided a better understanding of organic matter transformation at different treatment …