Digital Commons Network^™

Psychological Sense Of Community In On-Line Learning Environments, Thomas Chris Laughner

Dissertations

Problem. Current literature discusses differences among populations as they relate to face-to-face learning communities. However, no literature exists to determine if these same differences exist in an on-line learning environment. Since community has been closely linked to social and academic integration and success, additional research on whether populations with certain demographics feel the same absence of a sense of community in an on-line environment must be addressed. This study examines differences in psychological sense of community among students based on ethnicity, age, and sex.

Method. A revised Sense of Community Index was administered to students enrolled in at least one …

The Use Of Science In Theology: Case Studies Of Thomas F. Torrance And Langdon B. Gilkey, Martin Frederick Hanna

Dissertations

Problem . The purpose of this dissertation is to address the problem of the use of science in theology in the writings of Thomas F. Torrance and Langdon B. Gilkey. Chapter 1 introduces the problem in terms ofdefinitions of science and theology, and thehistory of the use of science in theology. Attention is given to definitions of science as exclusive or inclusive of theology; and to definitions of theology as the study of God and/or the study of divine revelation. Thehistorical background to the problem is surveyed in terms of premodern, modern, and postmodern shifts in science and in the …

Instructional Implications Of The Michigan Educational Assessment Program As An Accountability Instrument, Daniel J. Applegate

Dissertations

Problem. In Michigan, early elementary school teachers are held accountable for instructional decisions they made based on the number of children who pass the state standardized reading test, the Michigan Educational Assessment Program (MEAP). Although state officials claim the MEAP can inform instruction, no data are regularly collected to describe reading instructional practices or the relationship between current practices and the percentage of students who pass the MEAP.

Method. Using a survey instrument, this study measured the amount of instructional time Kindergarten through Grade 4 teachers reported that they devoted to the development of 19 different components or activities within …

The Concept Of Salvation In 19-34-Year-Old Seventh-Day Adventists Who Live In The State Of Indiana, Neva Charlotte Regal

Dissertations

Purpose of the Study. The purpose of this study was (a) to describe how the concept of salvation develops among Adventist young adults and (b) to examine the perceived influence of mentors and (c) life experiences, especially traumatic experiences, on the development of the concept of salvation and intrinsic religious motivation.

Method. This cross-sectional developmental study utilized three instruments: (a) the Salvation Concept Interview, (b) the Life Experience Interview, and (c) the Intrinsic/Extrinsic Religious Motivation Scale. Interviews were conducted with 132 individuals, and the data were analyzed descriptively and quantitatively using Spearman rho correlations and Chisquares.

Results and Conclusions. Limited …

First-Year Teacher Perceptions Of Classroom Experiences And Teacher Induction In A Midwestern School District, Cheryl Torok Fleming

Dissertations

Problem. The purpose of this study was to discover first-year teacher perceptions of their experiences with classroom teaching and teacher induction in a midwestern school district.

Method. This qualitative study sought to discover how new teachers build knowledge of the context and culture of teaching. Purposeful sampling techniques were used. Participants were delimited to practicing K-6 educators in an Indiana urban school district, completing their first year of experience as classroom teachers. Data collection occurred through semi-structured interviews. The questions focused upon the development process of beginning teachers, and how an induction program contributed to their development. The …

The Stairway To Heaven: A Critique Of The Evangelical Gospel Presentation In North America, Paul Brent Dybdahl

Dissertations

The topic . This study focuses on the so-called "plan of salvation" or "gospel presentation" that evangelical Christians in the United States present to seekers who want to know how to be saved. There are currently three dominant presentations that are widely employed and emulated. The authors of each are well-known: D. James Kennedy, Bill Bright, and Billy Graham.

The major portion of my study involves a two-stage critique of these dominant evangelical gospel presentations: first, from the perspective provided by communication theory, and second, by comparing the presentations of Kennedy, Bright, and Graham with conversion accounts from Luke-Acts. Essentially, …

Determination Of Spatial Strata For Environmental Regulatory Purposes, John Edward Daniels

Dissertations

This dissertation introduces spatial strata modelling, a methodology that combines spatial statistics, cluster analysis, and geographic information system theories to analyze the background level of naturally occurring contaminants of concern (COCs). The objective of spatial strata modelling is to divide a geographic area of interest into mutually exclusive geographic zones (spatial strata): with each stratum representing a different level of COC concentration. An estimate of each stratum's COC concentration level, representing an upper regulatory limit, will also be provided. Data provided by the Michigan Department of Environmental Quality describing the spatial location and arsenic concentrations of 211 Michigan sites (arsenic …

K+- Induced Dilation Of Cremasteric Arterioles Involves Na+/K+Atpase And Inward Rectifier K+ Channels, Wendy Burns

Dissertations

The purpose of this study was to evaluate the possible mechanisms involved in cremasteric arteriolar dilation as a result of increased concentrations of ([K⁺]_o) extracellular potassium. Many other studies suggested that Na⁺/K⁺ ATPase or K_IR channels are responsible for potassium-induced vasodilation in other systems (2, 12, 22, 40, 46, 52, 16, 17, 25, 33, 34, 85, 99, 151). However, these studies show only partial inhibition of dilation as a result of independent blockageof each mechanism. The hypothesis of this study was that both mechanisms contribute to potassium-induced dilation seen in cremasteric arterioles. …

Load Sharing Strategies In Distributed Environments, Laurentiu Cucos

Dissertations

We investigate load sharing strategies in distributed systems based on work properties, environment and process organization. For various classes of problems we characterize the paradigms corresponding to applicable communication strategies. We develop suitable structure for the work, and work assignment techniques in order to maximize the efficiency. This research is based in part on work conducted on distributed numerical integration.

Geochemical And Isotopic Characterization Of Shallow Basinal Brines From The Makgadikgadi Pans Complex, Northeastern Botswana: Determination Of The Sources Of Salinity, Loago N. Molwalefhe

Dissertations

Isotopes and chemical tracers have been used to constrain the sources and causes of salinity in shallow groundwater brine from the Makgadikgadi Basin, northeastern Botswana. The brine is massively rich in chloride and sodium, and moderately rich in carbonates, sulphate and potassium, and is distinctively poor in divalent cationic species. Various models that have been advanced to explain the origin of the brines include evaporative enrichment at the surface and density-induced infiltration, dissolution of evaporites, and trapped connate water.

This study presents the compositional variability and behaviors of ·the stable isotopes of carbon (S¹³C) and oxygen (S^{18 …}

Student Satisfaction With Michigan Community College Distance Education Courses, Eugene H. Mckay Iii

Dissertations

Distance education courses offered by community colleges and other higher education institutions are becoming popular options for students who seek a more convenient method to obtain a college education. Community colleges are actively expanding their offerings of distance education courses, both nationally and in Michigan. Yet minimal research has been conducted on a large scale to discover the factors which contribute to satisfaction with distance education courses at community colleges.

This study consists of a cross-sectional survey of over 6000 Michigan community college students in Michigan, who completed a distance education courseduring the fall semester of 2002. Sixteen of Michigan's …

How Secondary School Mathematics Teachers Construct An Understanding Of "Appropriate Use" Of Graphing Calculators In The Context Of Collegial Inquiry, Marcia L. Weller Weinhold

Dissertations

No abstract provided.

Effects Of Sodium Metaborate On Kraft Pulping, Biljana M. Bujanovic

Dissertations

The kraft lime cycle can be either replaced or supplemented by borate-based autocausticizing (total or partial autocausticizing, respectively). The borate-based autocausticizing uses sodium metaborate to produce sodium hydroxide in the two-step reaction performed in a recovery boiler and dissolving tank. In accordance with the borate-based autocausticizing chemistry, sodium metaborate is an additional chemical in both pulping and recovery. The studies of kraft pulping in the presence of sodium metaborate provide insight into the effect which sodium metaborate might have on the pulping process including the delignification rate, selectivity of lignin removal, and the properties of both pulp and black liquor. …

Psychophysically Derived Work Frequencies Associated With Roof Shingling Operations Involving Change In Grade, Sang Dae Choi

Dissertations

The objective of this study was to investigate the effect of roof slope on psychophysical roof shingling frequency. Twelve healthy males (21-30 years old) were used as participants. Experiment one was designed to determine Maximum Acceptable Roof Shingling Frequency (MARSF) for a workday period using psychophysical methodology. Results indicate that 198 shingles/hr is an acceptable roof shingling frequency for a workday. Furthermore, 2 hours is an acceptable testing period (equivalent to the workday). Postural sway and physiological variables support these findings. Experiment two was designed to study the effect of slope (18°, 26°, and 34°) on MARSF. Experiment two indicates …

Preparing Teachers To Use Technology: The Webquest In The Secondary English Language Arts Methods Classroom, Melinda C. Dobson

Dissertations

This study focuses on why and how English language arts methods instructors can integrate WebQuest development into their courses. Behavioral, cognitive, and constructive learning theory are established as a theoretical basis for introducing the WebQuest into the English language arts methods curriculum. Practicing teachers are surveyed about their WebQuest-use to identify positive and negative outcomes of the activity. National and international standards the WebQuest fulfills are identified. This study focuses on how to integrate technology in general into the methods course and then documents the development of the researcher's WebQuest and that of three different secondary English language arts methods …

Three Essays On Financial Intermediation, Capital Formation, And Economic Growth And Development, Md. Habibur Rahman

Dissertations

This dissertation contains three essays on financial intermediation, capital formation, and economic growth and development. The first essay presents a theoretical model explaining the role of financial intermediation in capital formation and economic growth. It outlines a model of search and matching equilibrium in financial economies where a lender owns capital and an entrepreneur owns entrepreneurial skill and output is produced when search generates a meeting between a lender and an entrepreneur. It is shown that investment in capital and skill is inefficient in autarky due to search frictions and an externality. We examine the autarkic equilibrium under bargaining-without-search and …

Taylor-Based Monetary Policy Rules: Are They Forward-Looking, Data Congruent, And Asset Price Responsive?, Rajeev Sooreea

Dissertations

This dissertation presents three essays to analyze a class of Taylor-based monetary policy rules that forms the basis of contemporary monetary policy decisions. The first essay examines whether policy rules are forward-looking. It proposes the methodology that, if the parameters of the Taylor rule change when the mechanism generating inflation changes, that is the Lucas critique applies, then inflation is not superexogenous for the parameters of the rule. In this case where superexogeneity fails, the rule is forward-looking. However, the results indicate that, although there is structural break in the inflation volatility process as evidenced by a model of heteroskedastic …

Irradiation Induced Order-Dis Order Transformations In Ni-Mo Alloys, Ovidiu F. Toader

Dissertations

No abstract provided.

An Investigation On The Impact Of The Structure Of Summative Student Evaluation On Self-Regulated Learning, John Charles Ritzler

Dissertations

Many hypotheses have been offered regarding the impact on learning caused by the most traditional practice of summative student evaluation, namely that of assigning marks to students. Sufficient evidence exists to suggest this practice often has detrimental effects. This study was designed to investigate the following three questions: (1) How does the method of summative student evaluation impact self-regulated learning in low-achieving high school mathematics students? (2) How does the cognitive level of the task mediate the relationship between method of summative student evaluation and self-regulated learning? (3) How does the length of time students are exposed to a method …

Adult Esl Oral Reading Fluency And Silent Reading Comprehension, Kristin Lems

Dissertations

A descriptive study of second language adults studying ESL at the beginning, intermediate, and advanced levels in a post-secondary academic program revealed that their oral reading fluency had a significant, low-to-moderate correlation with scores on a measure of silent reading comprehension. The correlation was slightly stronger for measures of accuracy than speed, and strongest for miscue ratio. The correlation increased as proficiency level increased. Among different first language groups, the correlation was highest for Hispanic learners, and lowest for Chinese. Furthermore, all fluency measures correlated better with a listening measure than with the silent reading comprehension measure. When a system …

Essays On Monetary Policy In Bangladesh, Sayera Younus

Dissertations

No abstract provided.

A Robust Two-Sample Procedure To Estimate A Shift Parameter, Feridun Tasdan

Dissertations

This study estimates the location shift parameter in the two-sample problem. The classical method, Least Square(LS), obtains the shift parameter estimate under the normality assumption. A departure from normality assumption makes the estimate inefficient and unreliable. One alternative to the least square estimate is Hodges-Lehmann (HL) estimate which uses Wilcoxon ranks to estimate the shift parameter. This estimate is robust against contaminations and large outliers. The proposed method in this study combines two samples and uses convolution technique to find a density function for the combined sample. This new density function is later used in the construction of the log …

Social Disorganization, Disorder, Social Cohesion, Informal Controls, And Crime: A Reformulation And Test Of Systemic Social Disorganization Theory, Gayle M. Rhineberger

Dissertations

The primary purpose of this dissertation is to modify and test the systemic social disorganization models of crime proposed by Bursik and Grasmick (1993) and Sampson, Raudenbush, and Earls (1997), and offer an empirical test of my hypothesized model. Specifically, the model includes traditional indicators of social disorganization (racial/ethnic heterogeneity, socioeconomic status, family disruption, residential stability) as exogenous variables; social and physical disorder, social cohesion, and three levels of informal social control (private, parochial, and public) as intervening mechanisms; and official crime counts and crime victimization as dependent variables.

The data used in this study come from the Project on …

Culture And The Effectiveness Of Supplier Diversity Programs: A Test Of Predictors, Gwendolyn Whitfield

Dissertations

Increased globalization and diversity has brought with it unique interdependencies. As we experience demographical shifts unlike any other in U.S. history, the growth rate of minority-owned businesses may represent unprecedented opportunity for corporate buyers to partner with minority suppliers. According to the Minority Business Development Agency, the minority population will represent 37.4 percent of the total U.S. population by the year 2020, and will yield purchasing power of $3 trillion. Moreover, it is estimated that between the years 2000 and 2050 the majority of new business starts will originate in the minority business community (U.S. Small Business Administration 1994). Minority-owned …

Programming Language Trends : An Empirical Study, Yaofei Chen

Dissertations

Predicting the evolution of software engineering technology trends is a dubious proposition. The recent evolution of software technology is a prime example; it is fast paced and affected by many factors, which are themselves driven by a wide range of sources. This dissertation is part of a long term project intended to analyze software engineering technology trends and how they evolve. Basically, the following questions will be answered: How to watch, predict, adapt to, and affect software engineering trends?

In this dissertation, one field of software engineering, programming languages, will be discussed. After reviewing the history of a group of …

Mobility Modeling And Management For Next Generation Wireless Networks, Woo-Jin Choi

Dissertations

Mobility modeling and management in wireless networks are the set of tasks performed in order to model motion patterns, predict trajectories, get information on mobiles' whereabouts and to make use of this information in handoff, routing, location management, resource allocation and other functions.

In the literature, the speed of mobile is often and misleadingly referred to as the level of mobility, such as "high" or "low" mobility. This dissertation presents an information theoretic approach to mobility modeling and management, in which mobility is considered as a measure of uncertainty in mobile's trajectory, that is, the mobility is low if the …

Ip Traceback With Deterministic Packet Marking Dpm, Andrey Belenky

Dissertations

In this dissertation, a novel approach to Internet Protocol (IP) Traceback - Deterministic Packet Marking (DPM) is presented. The proposed approach is scalable, simple to implement, and introduces no bandwidth and practically no processing overhead on the network equipment. It is capable of tracing thousands of simultaneous attackers during a Distributed Denial of Service (DDoS) attack. Given sufficient deployment on the Internet, DPM is capable of tracing back to the slaves for DDoS attacks which involve reflectors. Most of the processing is done at the victim. The traceback process can be performed post-mortem, which allows for tracing the attacks that …

Capacity, Coding And Interference Cancellation In Multiuser Multicarrier Wireless Communications Systems, Christian Ibars Casas

Dissertations

Multicarrier modulation and multiuser systems have generated a great deal of research during the last decade. Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier modulation generated with the inverse Discrete Fourier Transform, which has been adopted for standards in wireless and wire-line communications. Multiuser wireless systems using multicarrier modulation suffer from the effects of dispersive fading channels, which create multi-access, inter-symbol, and inter-carrier interference (MAI, ISI, ICI). Nevertheless, channel dispersion also provides diversity, which can be exploited and has the potential to increase robustness against fading. Multiuser multi-carrier systems can be implemented using Orthogonal Frequency Division Multiple Access (OFDMA), a …

Optimal And Intelligent Decision Making In Sustainable Development Of Electronic Products, Meimei Gao

Dissertations

Increasing global population and consumption are causing declining natural and social systems. Multi-lifecycle engineering and sustainable development address these issues by integrating strategies for economic successes, environmental quality, and social equity. Based on multi-lifecycle engineering and sustainable development concepts, this doctoral dissertation aims to provide decision making approaches to growing a strong industrial economy while maintaining a clean, healthy environment. The research develops a methodology to complete both the disassembly leveling and bin assignment decisions in demanufacturing through balancing the disassembly efforts, value returns, and environmental impacts. The proposed method is successfully implemented into a demanufacturing module of a Multi-LifeCycle …

Thermochemistry And Kinetic Analysis On Radicals Of Acetaldehyde + O2, Allyl Radical + O2 And Diethyl And Chlorodiethyl Sulfides, Jongwoo Lee

Dissertations

Thermochemical properties for reactants, intermediates, products and transition states important in the radicals of acetaldehyde + O₂ and allyl radical + O₂ reaction systems are analyzed with density functional and ab initic calculations, to evaluate the reaction paths and kinetics in oxidation and pyrolysis. Ketene is one important product resulting from acetaldehyde oxidation; thus thermochemistry plus isomerization and conversion reactions of ketene are also analyzed. Enthalpies of formation are determined using isodesmic reaction analysis at the CBSQ composite and density functional levels. Entropies and heat capacities are determined using geometric parameters and vibration frequencies obtained at the HF/6-31G(d') …