Digital Commons Network^™

Post Doi Moi Urban Higher Education In The Socialist Republic Of Vietnam: The Case Of Hong Duc University, Jeanne Beth Natali

Theses and Dissertations in Urban Services - Urban Education

The Socialist Republic of Vietnam is experiencing unprecedented peace and prosperity. Although Vietnam's war-damaged economy continued to decline for ten years after hostilities ended in 1975, everything changed in 1986 when doi moi, a moderate economic reform program, was introduced. Doi moi put enormous stress on higher education, whose function in the past had been to train workers for the state sector. Suddenly, higher education had to respond to the changing needs of Vietnamese society.

A 1992 educational sector study found that higher education was irrelevant to the needs of the transitional Vietnamese society. Universities were too small and …

Nonlinear Response And Fatigue Estimation Of Surface Panels To White And Non-White Gaussian Random Excitations, Jean-Michel Dhainaut

Mechanical & Aerospace Engineering Theses & Dissertations

In stochastic structural dynamics, the majority of analyses have dealt with linear structures under stationary, Gaussian, and band-limited white noise excitations. Although these simplifying assumptions may be justified, in many processes experimental data have shown quite frequently the non-stationary and non-Gaussian characteristics of the loads. An efficient finite element modal formulation has recently been developed to extend the analysis to nonlinear structural responses. Laminated plate theory and von Karman large displacement relations are used to derive the nonlinear equations of motion for an arbitrarily laminated composite panel subjected to combined acoustic and thermal loads. The nonlinear equations of motion in …

An Integrated Risk Analysis Methodology In A Multidisciplinary Design Environment, Katrina R. Hampton

Engineering Management & Systems Engineering Theses & Dissertations

Design of complex, one-of-a-kind systems, such as space transportation systems, is characterized by high uncertainty and, consequently, high risk. It is necessary to account for these uncertainties in the design process to produce systems that are more reliable. Systems designed by including uncertainties and managing them, as well, are more robust and less prone to poor operations as a result of parameter variability.

The quantification, analysis and mitigation of uncertainties are challenging tasks as many systems lack historical data. In such an environment, risk or uncertainty quantification becomes subjective because input data is based on professional judgment. Additionally, there are …

Ensemble Monte Carlo Based Simulation Analysis Of Gan Hemts For High-Power Microwave Device Applications, Tao Li

Electrical & Computer Engineering Theses & Dissertations

The high electron mobility transistors (HEMTs) fabricated using wide-bandgap semiconductors show promise as high-gain, low-noise devices with superior frequency response. The structure and operation principle of HEMT are first briefly discussed. The distinguishing and unique properties of GaN are reviewed and compared with those of GaAs. Calculations of the electronic mobility and drift velocity have been carried out for bulk GaN based on a Monte Carlo approach, which serves as a validity check for the simulation model.

By taking account of polarization effects, degeneracy and interface roughness scattering, important microwave performance measures such as the dynamic range, harmonic distortion and …

Finite Element Analysis And Active Control For Nonlinear Flutter Of Composite Panels Under Yawed Supersonic Flow, Khaled Abdel-Motagaly

Mechanical & Aerospace Engineering Theses & Dissertations

A coupled structural-electrical modal finite element formulation for composite panels with integrated piezoelectric sensors and actuators is presented for nonlinear panel flutter suppression under yawed supersonic flow. The first-order shear deformation theory for laminated composite plates, the von Karman nonlinear strain-displacement relations for large deflection response, the linear piezoelectricity constitutive relations, and the first-order piston theory of aerodynamics are employed. Nonlinear equations of motion are derived using the three-node triangular MIN3 plate element. Additional electrical degrees of freedom are introduced to model piezoelectric sensors and actuators. The system equations of motion are transformed and reduced to a set of nonlinear …

Radiative Interactions In Thermochemical Nonequilibrium Expanding Flows, Srikanth B. Pidugu

Mechanical & Aerospace Engineering Theses & Dissertations

A numerical study is conducted to investigate radiative interactions in flows with thermal and chemical nonequilibrium. The two dimensional spatially elliptic Navier-Stokes equations have been used to numerically investigate different physical processes in the nozzle flow problem. The system of governing equations are solved using explicit, unsplit MacCormack predictor-corrector scheme. The chemistry source term is treated implicitly to alleviate stiffness associated with fast chemical reactions.

Different physical processes considered in this study are investigated in a systematic manner. Finite chemical processes in chemically reacting supersonic nozzle flows are studied. Five hydrogen-air combustion models have been employed to study the influence …

Buckets: Smart Objects For Digital Libraries, Michael L. Nelson

Computer Science Faculty Publications

Current discussion of digital libraries (DLs) is often dominated by the merits of the respective storage, search and retrieval functionality of archives, repositories, search engines, search interfaces and database systems. While these technologies are necessary for information management, the information content is more important than the systems used for its storage and retrieval. Digital information should have the same long-term survivability prospects as traditional hardcopy information and should be protected to the extent possible from evolving search engine technologies and vendor vagaries in database management systems. Information content and information retrieval systems should progress on independent paths and make limited …

Part 3: The Decline Of Coal And The Rise Of Deep-Draft Ships: The Future Of The Port, Regional Studies Institute, Old Dominion University

State of the Region Reports: Hampton Roads

Since the early 1990s, the Port has stagnated in terms of the volume of the cargo it handles. This is due almost solely to a decline in bulk cargo (mostly coal). Nonetheless, the Port continues to provide major a economic impetus to the region because it has become much more efficient and competitive over the past decade.

Future Marine Zooplankton Research- A Perspective, Marine Zooplankton Colloquim 2, Eileen E. Hofmann, John M. Klinck

CCPO Publications

During the Second Marine Zooplankton Colloquium (MZC2) 3 issues were added to those developed 11 yr ago during the First Marine Zooplankton Colloquium (MZC1). First, we focused on hot spots, i.e., locations where zooplankton occur in higher than regular abundance and/or operate at higher rates. We should be able to determine the processes leading to such aggregations and rates, and quantify their persistence. Second, information on the level of individual species, even of highly abundant ones, is limited. Concerted efforts should be undertaken with highly abundant to dominant species or genera (e.g., Oithona spp., Calanus spp., Oikopleura spp., Euphausia superba …

Future Research Vessels, Larry P. Atkinson

CCPO Publications

The academic research vessel fleet in the United States is embarking on a great experiment. By 2004 we will know if SWATH vessels such as the Mlo Moana and the possible built Woods Hole Oceanographic Institution coastal SWATH have such great advantages that all future vessels will be of SWATH design. Or, we will find that the two hull forms have distinct niches and the fleet will evolve with a strategic mix. Regardless of the Mure hull form research vessels will grow in size to accommodate advanced technology and the people to run and maintain it. The research vessel will …

The Regional Public-Private Civic Infrastructure Of Hampton Roads And Its Impact On The Implementation Of Economic Development Initiatives, James Andrew Probsdorfer

Theses and Dissertations in Urban Services - Urban Management

This study analyzes the effectiveness of a network of five regional organizations to promote economic development in Hampton Roads, Virginia. Using a case study methodology, data collected from organizational documents, media reports, and personal interviews was categorized and triangulated to determine how many regional economic proposals were implemented from 1990 to 2000. This analysis created a regional timeline from which was produced a regional inventory of economic proposals. This study concluded that the regional economic development organizations in Hampton Roads have a fragmented network and their output has been influenced by regional factors.

Specifically out of a total of nineteen …

Corrected Article: Exclusive Electroproduction Of ᵠ Mesons At 4.2 Gev [Physical. Rev. C 63, 065205, (2001)], M. Bektasoglu, L. Ciciani, G. E. Dodge, T. A. Forest, C. E. Hyde-Wright, S. E. Kuhn, L. M. Qin, F. Sabatié, L. B. Weinstein, Et Al., The Clas Collaboration

Physics Faculty Publications

We studied the exclusive reaction ep → e' p' ᵠ using the ᵠ →K⁺K^- decay mode. The data were collected using a 4.2 GeV incident electron beam and the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility. Our experiment covers the range in Q² from 0.7 to 2.2 GeV²and W from 2.0 to 2.6 GeV. Taken together with all previous data, we find a consistent picture of ᵠ production on the proton. Our measurement shows the expected decrease of the t slope with the vector-meson formation time c Δ t …

Understanding The Digital Divide As It Relates To Electronic Commerce, Franklin D. Gaillard

Theses and Dissertations in Business Administration

There exists an electronic digital divide within the United States. This digital divide concerns access to the Internet and its corresponding technologies. The U.S. government is concerned about the digital divide because it appears that certain ethnic groups and income levels are being excluded from computer technologies and the Internet. These groups include African Americans and Hispanics, who are lagging the Caucasians significantly in gaining access to the Internet. For a while the gap between majority and minority groups appeared to be widening. Since Internet access is a prerequisite to electronic commerce, an understanding of the relationship between the digital …

Optical Properties Of Wide Band Gap Indium Sulphide Thin Films Obtained By Physical Vapor Deposition, N. Barreau, S. Marsillac, J. C. Bernède, T. Ben Nasrallah, S. Belgacem

Electrical & Computer Engineering Faculty Publications

Thin films of indium sulphide containing oxygen have been synthesized following a dry physical process. The constituents are deposited by thermal evaporation on glass substrates and then annealed under argon flow. Polycrystalline β-In₂S₃ containing oxygen thin films are obtained as soon as the temperature of annealing is between 623 and 723 K. In this paper, these β-In₂S₃ thin films have optically been studied. The optical band gap is direct. Its value is not dependent on the temperature of annealing. It is about 2.8 eV, which is higher than that of β-In₂S_{3 …}

The Relationship Between Brain Dominance And Career Interests, Damon Cary

OTS Master's Level Projects & Papers

The problem of this study was to determine the relationship between brain dominance and career selection being guided by financial expectations or career interests.

The Validation Of A Detailed Strategic Planning Process Model For The Implementation Of Distance Education In Higher Education, Kenneth Phillip Pisel Jr.

Theses and Dissertations in Urban Services - Urban Education

The purpose of this study was to develop, refine, and validate a model of the strategic planning process for distance education. To achieve this end, the informed opinion from a population of peer-nominated experts was solicited over three rounds of iterative Delphi questionnaires administered via electronic mail. Using descriptive statistics to analyze central tendency and variation, the straw model was refined into a validated model by the final Delphi round. In developing this model, the study answered specific questions about the following: (1) The impact of volatile technological change on a strategic distance education plan. (2) The optimum size and …

Coastal Ocean Morphodynamics And The Resulting Erosion And Deposition: An Analytical Approach, Shejun Fan

OES Theses and Dissertations

Coastal ocean morphodynamics is the study of the morphological change of the coastal ocean system. Environmental conditions, such as climatic and geological controls, are exogenous inputs of the system, which are responsible for geographic variation among coastal oceans. In the coastal ocean system, coastal morphological changes are the results of a series of morphodynamical processes. In this treatise, quantitative, dynamical sedimentary models are developed to provide an analytical understanding of morphodynamical processes in coastal ocean environments. These dynamical sedimentary models numerically simulate the sedimentary processes over a range of time scales from an event time scale, based on the fundamental …

Effects Of Organizational Climate, Feedback-Seeking Environment And Innovation Characteristics On The Implementation Of A 360-Degree Feedback System, Simon Alan Bartle

Psychology Theses & Dissertations

The present study examined the effects of organizational climate, feedback seeking environment and innovation characteristics on the implementation of a 360-degree feedback system within a large financial holdings company. The effect of user attitudes toward the 360-degree feedback system was also assessed. A sample of responses from 255 360-degree feedback system users was collected over a 14-month time period. LISREL was used to test the hypothesized structural model. Overall goodness of fit for the model was poor (using generalized least squares estimates: the Non-Normed Fit Index (NNFI) = .95, Comparative Fit Index (CFI) = .96; Root Mean Square Error of …

Characterization Of The Biological Activities Of Recombinant Fusion Protein Green Fluorescent Protein/Human Zona Pellucida Protein 3 (Gfp/Hzp3), Zhiyong Lin

Theses and Dissertations in Biomedical Sciences

Despite numerous reports indicating the successful production of bioactive recombinant ZP3, no report has shown the rhZP3 having direct binding activity with human sperm. Recombinant ZP3 generated from our previous study displayed binding activity with human sperm through indirect evidence from hemizona assay (HZA).

This present study focused on the production of recombinant ZP3 with direct binding activity with human sperm. Through the application of a pEGFP expression vector, fusion protein GFP/ZP3 was successfully generated and expressed. The expression of GFP/ZP3 was evidenced by RT-PCR and western blot. The fusion protein was partially purified by Ni-NTA affinity column from cell …

The Relationship Between Academic Self-Concept And The Achievement Expectancies On The Academic Achievement And Persistence Rate Of African-American Freshmen Students, Ira Falls Iii

Theses and Dissertations in Urban Services - Urban Education

This study addressed the use of certain noncognitive variables and their relationship to the academic achievement and persistence rate of African-American freshmen students attending a large, predominately white institution. Academic achievement was defined as a student's cumulative college grade point average and cumulative credits earned at the end of the freshmen year of study. Persistence rate was defined as the number of freshmen who enrolled compared to the percentage of those who re-enrolled for the Fall semester of their sophomore year. Moreover, the purpose of this study was to identify selected variables that are associated with increased African-American academic achievement …

A Study To Determine If There Was A Relationship Between The Brain Dominace And Grade Point Averages Of Students At Deep Creek High School, Donald M. Hurwitz

OTS Master's Level Projects & Papers

The following hypothesis was drafted to measure the affects of brain dominance: Students with left-brain dominance will have higher cumulative grade point averages than students with right-brain dominance.+D105D86:D119D86:D133D87D86:D91D86:D141D87D86:D91D86:D142D86:D141D86:D140D86:D139D86:D138D86:D139D86:D140D86:D141D86:D142D86:D143D86:D141

A Study To Determine The Differences Between On-Campus Degree Seeking Students And Teletechnet Degree Seeking Students In Academic Performance, Tiffany K. Doxsee

OTS Master's Level Projects & Papers

To find the solution to this problem, the following hypothesis was established: There will be no difference in academic success between on-campus degree seeking students and TELETECHNET distance learning degree seeking students in the undergraduate Occupational and Technical Studies program at Old Dominion University, in Norfolk, Virginia.

The Effectiveness Of Web Support To Increase Student's Performance In Advertising And Promotion, Jennifer D. Lanz

OTS Master's Level Projects & Papers

The following hypothesis was used in this study: 1. Students who have access to web support study materials will outperform students academically in Advertising and Promotion at Old Dominion University than students who did not have access to web support materials.

A Study To Determine Effective Recruitment Techniques For The Drafting And Design Program At Danville Community College, Robert Huffman

OTS Master's Level Projects & Papers

Questions used to guide this study included: 1. What factors in the recruitment process were the most significant in helping students select the drafting and design curriculum at Danville Community College? 2. What methods of recruitment did students feel had the least influence in their decision to enroll?

A Study To Determine The Opinions Of Information Technology Professionals Related To The Value Of "Soft Skills" In Technical Work Environments, Jan Walker

OTS Master's Level Projects & Papers

The goals of this study were to answer the following questions: 1. Do information technology professionals consider "soft skills" vital to their ability to perform successfully in their careers? 2. How important do soft skills rate today as compared to five years ago in the workplace? 3. What types of soft skills do information technology professionals need to develop to enhance their careers?

Meeting Research & Publication Requirements In An Undergraduate E T Program Through Senior Design Projects, Alok K. Verma

Engineering Technology Faculty Publications

(First paragraph) Success in an Engineering Technology programs has been traditionally evaluated based upon three factors namely, Teaching, Research and Service. While the relative ranking of these factors is arguable 1,5, it is the research (and the associated requirement of publication) which causes great anxiety for faculty in ET programs. This is specially true, in view of increasing emphasis placed on the research and publication by the ET programs in the nation. A number of articles have been written on the promotion and tenure requirements 2,3,4. Most of these publications discuss the general requirements of promotion and tenure and the …

Innovative Student Research Projects, Alok K. Verma

Engineering Technology Faculty Publications

Innovation in capstone projects, which should not be limited by external funding, is discussed. It is found that the properly designed unfunded senior projects can offer quality learning experience for students. Involvement of industry is a key factor for a successful capstone course. Innovative research projects can be offered under various organizational framework.

Prototype Development For A Leak-Preventive Toilet Flush System- An Met Senior Design (Capstone) Project, Cheng Y. Lin

Engineering Technology Faculty Publications

A senior design (Capstone) project for three mechanical engineering technology students at Old Dominion University is described. A prototype design is presented to perform the functional test of a leak-preventive toilet system. There are two major leaks in the toilet water tank. In the first case, leaking occurs when the seal in the water tank becomes aged. The leak is very easy to detect visually, since the outside of the tank and the floor becomes wet. In the second case, leak occurs when the flapper valve can't complete shut off the water, due to corrosion or damage of the rubber …

Entropy Generation Method To Quantify Thermal Comfort, S. C. Boregowda, S. N. Tiwari, S. K. Chaturvedi

Mechanical & Aerospace Engineering Faculty Publications

The present paper presents a thermodynamic approach to assess the quality of human-thermal environment interaction and quantify thermal comfort. The approach involves development of entropy generation term by applying second law of thermodynamics to the combined human-environment system. The entropy generation term combines both human thermal physiological responses and thermal environmental variables to provide an objective measure of thermal comfort. The original concepts and definitions form the basis for establishing the mathematical relationship between thermal comfort and entropy generation term. As a result of logic and deterministic approach, an Objective Thermal Comfort Index (OTCI) is defined and established as a …

Time-Resolved Structural Study Of Low-Index Surfaces Of Germanium Near Its Bulk Melting Temperature, Xinglin Zeng, H. E. Elsayed-Ali

Electrical & Computer Engineering Faculty Publications

The structure of the low-index surfaces of germanium near its bulk melting temperature is investigated using 100-ps time-resolved reflection high-energy electron diffraction. The surface is heated by 100-ps laser pulses while a synchronized electron beam probes the structure. Ge(111)was observed to remain in its incomplete melting structure up to at least T_m + 134 ± 40 K when heated by a 100-ps laser pulse. Both the Ge(100) and Ge(110) surfaces are observed to melt near the bulk melting temperature when heated with 100-ps laser pulses. Because of the low-diffraction intensity-to-background ratio at high temperatures and because of the temperature …