Digital Commons Network^™

On-Road Remote Sensing Of Automobile Emissions In The Chicago Area: Year 2, Peter J. Popp, Gary A. Bishop, Donald H. Stedman

Fuel Efficiency Automobile Test Publications

No abstract provided.

Join Index Hierarchy: An Indexing Structure For Efficient Navigation In Object-Oriented Databases, Jiawei Han, Zhaohui Xie, Yongjian Fu

Computer Science Faculty Research & Creative Works

A novel indexing structure - join index hierarchy - is proposed to handle the 'gotos on disk' problem in object-oriented query processing. The method constructs a hierarchy of join indices and transforms a sequence of pointer chasing operations into a simple search in an appropriate join index file, and thus accelerates navigation in object-oriented databases. The method extends the join index structure studied in relational and spatial databases, supports both forward and backward navigations among objects and classes, and localizes update propagations in the hierarchy. Our performance study shows that partial join index hierarchy outperforms several other indexing mechanisms in …

Sahaja Yoga: An Ancient Path To Modern Mental Health?, Adam Morgan

School of Psychology Theses

The present study looks to evaluate the effectiveness of the meditative practice of Sahaja Yoga as a treatment for the symptoms of anxiety and depression. Whilst there is a small research literature that has investigated the efficacy of meditation (usually based upon the Buddhist Vipassana tradition) for the treatment of such symptoms, and a smaller literature looking at the effectiveness of Sahaja Yoga in the treatment of a number of physical health problems, no published studies have looked at the effectiveness of Sahaja Yoga as a treatment for mental health problems. The present study therefore compared three independent groups, these …

Optimized Calibration For Unsteady Flow Modeling Using A Genetic Algorithm, Daniel Sanchez, Jerome A. Westphal

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The calibration of an unsteady flow model generally relies on the estimation of roughness coefficients, which act as descriptors of friction resistance along the channel. Here an optimized procedure is implemented by incorporating a genetic algorithm (GA) to automate the process. This approach is suitable because discrete parameters are considered. The target is a one-dimensional unsteady flow model in which the roughness coefficient is allowed to vary not only along the river axis, but also dynamically with discharge. The objective function is the root mean square of the difference between measured and computed water levels at a given cross section. …

A Study Of Factors Affecting The Implementation Of Iso 9000 In Taiwan's Construction Industry, Chuan-Chen Hung

Dissertations and Theses @ UNI

The purpose of this study was to determine the attitude of Taiwanese construction companies regarding the adoption and implementation of ISO 9000. This was accomplished by conducting a survey to investigate the perceived factors affecting the intention to adopt ISO 9000 and its successful implementation.

The survey instrument was developed through the review of related literature as well as through validations. One hundred eighty (180) construction companies were randomly sampled from the 1998 Membership Directory of the National Construction Association of the Republic of China (Taiwan), which consisted of 60 Type-A, Type-B, and Type-C construction companies. In total, 62 respondents …

Efficacy Of Beam-Hardening Correction For Vascular Morphometry Using 3d Conebeam Micro-Ct, Roger H. Johnson, Jiang Hsieh, Robert C. Molthen, Christopher A. Dawson

Biomedical Engineering Faculty Research and Publications

No abstract provided.

Predicting The Unconfined Compressive Strength Of The Breathitt Shale Using Slake Durability, Shore Hardness And Rock Structural Properties, Engin C. Koncagül, Paul M. Santi

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Compressive strength is the most widely used design parameter in the construction industry and in rock engineering. For example, Bieniawski [Bieniawski, Z.T., Estimating the strength of rock materials, Is. J. S. Afr. Inst. Min. Metall., 1974, 74, 312-320.] reported that mining engineers request the uniaxial compressive strength (UCS) more often than any other rock property. However, standards set for specimen preparation are very demanding. Therefore, it is quite difficult and sometimes impossible to fulfill these requirements using weak rocks and especially shales. This paper evaluates the use of the slake durability and Shore hardness tests to estimate UCS, based on …

Useful Arts In The Information Age, Alan L. Durham

Articles

No abstract provided.

Analysis Of Fiber-Reinforced Laminated Momentum Wheel Rotors, Rania Abdel Hassan

Archived Theses and Dissertations

No abstract provided.

50-75 Administrative Records Of Robert A. Burnett, 1978-1999., University Libraries, Lane Library

Finding Aids

Administrative Records of Robert Burnett, 1978-1999. 43 linear feet. 1978-1999. Memos, correspondence, audits, proposals, policy statements of Robert Burnett as Dean of the School of Arts and Sciences (1978-1980), Vice-President (1980-1985), Acting President (1982-1984) and President (1984-1999), arranged in the following series:

Series One: Subject files, 1978-1999, 18 linear feet.

Series Two: News clippings, 1965-1999, 2 MS boxes, 1 linear foot.

Series Three: Complaints, 1984-1998, 1 MS box, 0.5 linear foot.

Series Four: Departmental files, 1978-1989, 16 linear feet.

Series Five: Copies of Correspondence, 8/1982-1/1988, 2.5 linear feet.

Series Six: University System, 1982-1989, 5 linear feet.

40-42 Discovering Desegregation At Armstrong: Records And Papers 1966-1982, University Libraries, Lane Library

Finding Aids

Records documenting desegregation processes at Armstrong State College from 1966 to 1982. Savannah State College, the historically African-American college of Savannah, is discussed in tandem with Armstrong The records and papers include correspondence, memorandums, official documents, newspapers, pamphlets, minutes, court documents, statistics and various versions of the desegregation plan. ASC and SSC of Savannah, Georgia are most prevalent but other University System of Georgia schools are mentioned as well. Influential people include Henry Ashmore, David Tatel, George Simpson and Peter Holmes.

Faculty Senate Minutes-1999

Faculty Senate Minutes

No abstract provided.

Bald Eagle Response To Boating Activity In Northcentral Florida, P. B. Wood

Faculty & Staff Scholarship

No abstract provided.

A Process For Appraising Commerical Usability Evaluation Methods., Ronan Fitzpatrick, Alan Dix

Conference papers

Recent international quality standards and European Community legislation have identified new software quality factors. These new factors include suitability, installability and adaptability. Other quality factors need to be reviewed in the light of these developments. This has impacted on established commercial usability evaluation methods to the extent that it is appropriate to ask if these evaluation methods comply with the new standards and legislation. In order to answer this question the commercial evaluation methods need to be appraised (meta-evaluation) using a suitable method appraisal process. This paper describes such an appraisal process which specifically addresses the many considerations raised by …

Hypersonic Drag And Heat Transfer Reduction Using A Forward Facing Jet, Benjamin Meyer, Harlan F. Nelson, David W. Riggins

Mechanical and Aerospace Engineering Faculty Research & Creative Works

A two-dimensional numerical study of the effects of a forward-facing jet located at the stagnation point of a blunt body on wave drag, heat transfer, and skin friction drag is presented for Mach 6.5 flow at 30 km altitude. The full Navier-Stokes equations are used with variable viscosity and thermal conductivity. It is shown that upstream injection can significantly modify the flow field. If the jet conditions are chosen properly, large reductions in drag and heat transfer can be obtained resulting in possible increases in the volumetric efficiency and static stability of aircraft and reductions in heating protection requirements for …

A New Reflection Free Boundary In Uniform Flow Using Mapped Infinite Wave Envelope Elements, Walter Eversman, Indranil Danda Roy

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Variable order mapped infinite wave envelope elements are developed for finite element modeling of acoustic radiation in a uniformly moving medium. These elements can be used outside of the near field as a non-reflecting boundary condition for computations on an infinite domain in which a radiating body is immersed in a moving medium. Mapped infinite wave envelope elements provide a boundary condition equivalent to stiffness, mass, and damping matrices appended to the inner mesh. A demonstration of the characteristics of the mapped infinite wave envelope elements is given in the context of acoustic radiation from a turbofan inlet for which …

The Future Of Bioethics Testimony: Guidelines For Determining Qualifications, Reliability, And Helpfulness, Bethany Spielman, George Agich

San Diego Law Review

This Article addresses key questions about expert bioethics testimony4 from within the framework of the basic rule concerning expert witnesses, Federal Rule of Evidence 702.' This Rule6 requires judges to affirmatively answer three basic questions before admitting expert testimony: (1) does this witness qualify as an expert by knowledge, skill, experience, training, or education; (2) does the testimony consist of scientific, technical or other specialized knowledge; and (3) will the testimony assist the trier of fact. Bioethics testimony presents distinctive problems in each area, on which commentators have not necessarily focused. Part II of this Article addresses the question of …

Design, Optimization, And The Prototyping Of A Small Tuning-Fork Ultrasonic Piezoelectric Linear Motor, Daniel S. Stutts, James R. Friend

Mechanical and Aerospace Engineering Faculty Research & Creative Works

The design, optimization, and properties of a prototype small traveling-wave ultrasonic piezoelectric linear motor design are described. A method for optimizing the geometry of the motor to maximize its mechanical output for a given electrical input is described, as is the inherent properties of the design to maximize the motors durability and utilization of the piezoelectric material. Results from testing the motor demonstrate the design and indicate a maximum speed of 2.5 cm/s with a preload of 16 g due to an applied voltage of 80 V/RMS/ at an applied current of 15 mA.

Online Identification And Control Of Aerospace Vehicles Using Recurrent Networks, Zhenning Hu, S. N. Balakrishnan

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Methods for estimating the aerospace system parameters and controlling them through two neural networks are presented in this study. We equate the energy function of Hopfield neural network to integral square of errors in the system dynamics and extract the parameters of a system. Parameter convergence is proved. For control, we equate the equilibrium status of a "modified" Hopfield neural network to the steady state Riccati solution with the system parameters as inputs. Through these two networks, we present the online identification and control of an aircraft using its nonlinear dynamics.

Stability Analysis Of Nonlinear Machining Force Controllers, Robert G. Landers, Yen-Wen Lu

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Model parameters vary significantly during a normal operation, thus, adaptive techniques have predominately been used. However, model-based techniques that carefully account for changes in the force process have again been examined due to the reduced complexity afforded by such techniques. In this paper, the effect of model parameter variations on the closed-loop stability for two model-based force controllers is examined. It was found that the stability boundary in the process parameter space can be exactly determined for force control systems designed for static force processes. For force control systems designed for first-order force processes, it was found that the stability …

Rethinking Unthinkable Punishment Policies In America, Michael Tonry

Articles

No abstract provided.

Faculty Perceptions Of Shared Decision Making And The Principal's Leadership Behaviors In Duval County Secondary Schools, Donald Wayne Leech

UNF Graduate Theses and Dissertations

Members of the school community should work collaboratively in the educating of students. Teachers and principals must understand that their traditional roles have changed and improved organizational teamwork will be fostered by all members of the learning community assuming decision making roles. Toward this end, the purpose of this correlational study was to explore the relationship between teachers' perceptions of the leadership behaviors of Duval County secondary school principals and their perceptions of the level of shared decision making practiced in their schools. This study provides insight into principal behaviors which nurture participation.

Leadership behavior was operationalized by the responses …

Liability Rules, Property Rules, And Incentives Not To Bargain: The Effect Of Competitive Rivalry On The Protection Of Legal Entitlements, David W. Melville

Seton Hall Law Review

No abstract provided.

A Taste Of Rolla: The Chancellor's Table Volume Ii, Dorcas Park

A Taste of Rolla: The Chancellor's Table

John and I have the unique opportunity to live in this wonderful memory-filled home built in 1889 called the Chancellor's Residence. We want to thank FOR and those who purchase this book as well as those who contributed the recipes to make this book possible. We hope you enjoy it. The proceeds from our first The Chancellor's Table enabled us to purchase a beautiful solid cherry dining table that will expand to seat 22, a lovely matching china cabinet to display some of the beautiful heirloom gifts that friends and alumni have given to the Residence, a matching expanding serving …

High Breakdown Strength, Multilayer Ceramics For Compact Pulsed Power Applications, Wayne Huebner, Brian L. Gilmore, Shi C. Zhang, Mike L. Krogh, B. C. Schultz, R. C. Pate, L. F. Rinehart, J. M. Lundstrom

Materials Science and Engineering Faculty Research & Creative Works

Advanced ceramics are being developed for use in large area, high voltage devices in order to achieve high specific energy densities (greater than 10^6/ J/m^3/) and physical size reduction. Initial materials based on slip cast TiO2 exhibited a high bulk breakdown strength (BDS greater than 300 kV/cm) and high permittivity with low dispersion (epsilon approximately equal to 100). However, strong area and thickness dependencies were noted. To increase the BDS, multilayer dielectric compositions are being developed based on glass/TiO2 composites. The addition of glass increases the density (approximately equal to 99.8% theoretical), forms a continuous grain boundary phase, and also …

Measurement Of The Dielectric Strength Of Titanium Dioxide Ceramics, Wayne Huebner, J. M. Lundstrom, L. F. Rinehart, R. C. Pate, T. L. Smith, Mike L. Krogh

Materials Science and Engineering Faculty Research & Creative Works

Titanium dioxide ceramics (TiO2) are candidate materials for high energy density pulsed power devices. Experiments to quantify the dielectric strength of TiO2 have been performed on a limited number of unoptimized samples. A high voltage test set was constructed to test the titanium dioxide. All samples had a relative dielectric constant of 100, all samples were of 3 mm nominal thickness, and all tests were performed in water dielectric to reduce the effect of the triple point field enhancement at the electrode edge. Both single layer and laminated samples were tested and the breakdown field strengths were recorded. Voltage risetimes …

Structural Disorder And The Origin Of High-Tc Suppression In La₁.₈₇₅Ba₀.₁₂₅ Cuo4−Δ, Daniel Haskel, Edward A. Stern, Fatih Dogan, Arnie R. Moodenbaugh

Materials Science and Engineering Faculty Research & Creative Works

Polarized x-ray absorption fine structure (XAFS) measurements at all La, Ba and Cu sites were used to study local structural features that accompany the strong Tc suppression at: r,,, 1/8 in La₂BaCuO₄. Two critical parameters regulating the strength of hole-lattice coupling in this material were determined, ie, the direction and magnitude of CuO₆ octahedra local tilts. Our findings include the existence of large disorder in the magnitude of the tilt angle about its average value (0), with an rms~~ 2 (0). We suggest that this large disorder strongly scatters a large fraction of states at …

X-Ray Absorption, Neutron Diffraction, And Mössbauer Effect Studies Of Mnzn-Ferrite Processed Through High-Energy Ball Milling, D. J. Fatemi, V. G. Harris, Mingxing Chen, Satish K. Malik, William B. Yelon, Gary J. Long, Amitabh Mohan

Physics Faculty Research & Creative Works

MnZn-ferrite has been prepared via high-energy ball milling of elemental oxides MnO, ZnO, and α-Fe₂O₃. Neutron diffraction measurements suggest a high density of vacancies in a spinel structure. The spinel phase appears to comprise 99.8 wt % of the material in the sample milled for 40 h, with the remainder attributable to unreacted α-Fe₂O₃. The x-ray absorption near-edge structure was analyzed to provide an understanding of the charge state of the constituent Fe ions. This analysis reveals about 2/3 of Fe cations to be trivalent, increasing to about 3/4 after a 5 …

Magnetic And Crystallographic Properties Of Lani₅₋ₓfex, C. Tan, Oran Allan Pringle, Mingxing Chen, William B. Yelon, J. Gebhardt, Naushad Ali, C. Y. Tai, G. K. Marasinghe, George Daniel Waddill, William Joseph James

Physics Faculty Research & Creative Works

No abstract provided.

Nuclear Fuel Pellet Inspection Using Artificial Neural Networks, Shahla Keyvan, Xiaolong Song, Mark Kelly

Nuclear Engineering and Radiation Science Faculty Research & Creative Works

Nuclear fuel must be of high quality before being placed into service in a reactor. Fuel vendors currently use manual inspection for quality control of fabricated nuclear fuel pellets. In order to reduce workers' exposure to radiation and increase the inspection accuracy and speed, the feasibility of automation of fuel pellet inspection using artificial neural networks (ANNs) is studied in this paper. Three kinds of neural network architectures are examined for evaluation of the ANN performance in proper classification of good versus bad pellets. Two supervised neural networks, back-propagation and fuzzy ARTMAP, and one unsupervised neural network called ART2-A are …