Digital Commons Network^™

Zoning And Land Use, Arthur J. Anderson

SMU Law Review

No abstract provided.

Depth-Shifting Of Shallow Water Guide Source Observations, Lisa M. Zurk, Brian H. Tracey

Electrical and Computer Engineering Faculty Publications and Presentations

In theory, matched field processing offers the significant benefit of higher signal gains and increased localization capability. However, this has not been robustly observed in practice because of inherent uncertainties about details of the shallow water propagation environments which limit the prediction of the channel response. The use of guide sources to directly measure the transfer function between source and receiver arrays has been proposed as a means for reducing mismatch. However, the guide source measurement only provides a measured transfer function at the guide source location. In this paper a method of depth-shifting guide source observations is proposed, making …

A Dynamic Neuro-Fuzzy Model Providing Bio-State Estimation And Prognosis Prediction For Wearable Intelligent Assistants, Yu Wang, Jack M. Winters

Biomedical Engineering Faculty Research and Publications

Background

Intelligent management of wearable applications in rehabilitation requires an understanding of the current context, which is constantly changing over the rehabilitation process because of changes in the person's status and environment. This paper presents a dynamic recurrent neuro-fuzzy system that implements expert-and evidence-based reasoning. It is intended to provide context-awareness for wearable intelligent agents/assistants (WIAs).

Methods

The model structure includes the following types of signals: inputs, states, outputs and outcomes. Inputs are facts or events which have effects on patients' physiological and rehabilitative states; different classes of inputs (e.g., facts, context, medication, therapy) have different nonlinear mappings to a …

Spectral Imaging Using A Commercial Colour-Filter Array Digital Camera, Roy Berns, Lawrence Taplin, Mahdi Nezamabadi

Articles

A multi-year research programme is underway to develop and deliver spectral-based digital cameras for imaging cultural heritage at the National Gallery of Art, Washington DC, and the Museum of Modern Art, New York. The cameras will be used for documentation, production imaging, and conservation science. Three approaches have undergone testing: a liquid-crystal tunable filter (LCTF) coupled with a monochrome camera, a six-position filter wheel containing absorption filters coupled with a monochrome camera, and a two-position filter slider containing absorption filters coupled with a colour-filter array (CFA) colour camera. The last approach is the most practical as it uses conventional digital …

Evaluation Of A Modified Sinar 54m Digital Camera At The National Gallery Of Art, Washington Dc During April, 2005, Roy Berns, Lawrence Taplin

Articles

On April 26 – 27 2005, the RIT team brought their prototype Sinar 54M camera system to the National Gallery of Art’s Imaging Department. The team included Lawrence Taplin, Mitchell Rosen, and Roy Berns. RIT brought a spectroradiometer to measure the daylight fluorescent viewing illumination and if time allowed, NGA’s CRT display. They also brought a Macintosh G5 to control the camera and for image processing. NGA is using a production Sinar 54M. This enabled a direct comparison between NGA’s digital imaging workflow and the RIT workflow. Both cameras used the same lighting, Broncolor pulsed Xenon, lighting geometry, and photography …

Solving An Mri Spin Relaxometry Problem With Parallel Computing, Alan Kaminsky, Luke Mcomber

Articles

MRI spin relaxometry is the process of recovering the spin density spectrum from the time samples of the spin signal for each pixel of a magnetic resonance image. Since healthy tissue exhibits different spin relaxation rates from diseased tissue, MRI spin relaxometry potentially has utility for diagnosing disease. However, recovering the spin relaxation rates involves solving an inverse problem which requires substantial computation. The computation's running time can be reduced by processing the pixels in parallel on a parallel computer. A parallel program for solving the MRI spin relaxometry problem, SRSolve, was implemented in Java with MPI, its running time …

Geometric Modeling Of Engineered Abrasive Processes, Andres L. Carrano, James B. Taylor

Articles

One of the common issues that arises in abrasive machining is the inconsistency of the surface roughness within the same batch and under identical machining conditions. Recent advances in engineered abrasives have allowed replacement of the random arrangement of minerals on conventional belts with precisely shaped structures uniformly cast directly onto a backing material. This allows for abrasive belts that are more deterministic in shape, size, distribution, orientation, and composition. A computer model based on known tooling geometry was developed to approximate the asymptotic surface profile that was achievable under specific loading conditions. Outputs included the theoretical surface parameters, R^sub …

Loving Your Students - A Faculty Model For Today's Classroom, Anthony Trippe

Articles

This paper reviews research related to four recent business management models of charismatic and inspirational leadership. It goes on to select the key traits and behaviors of these leadership models for the workplace environment and use them as the foundation of a model for a loving faculty member. Like the business leader, the devoted, caring professor leads his engineering students in their quest for knowledge, growth and learning. Based upon peer-reviewed leadership research which reports the value and benefits of a caring, mentoring and loving leader in the business world, the loving professor will also be successful in meeting the …

Methyl Methacrylate Oligomerically-Modified Clay And Its Poly (Methyl Methacrylate) Nanocomposites, Xiaoxia Zheng, David D. Jiang, Charles A. Wilkie

Chemistry Faculty Research and Publications

A methyl methacrylate oligomerically-modified clay was used to prepare poly(methyl methacrylate) clay nanocomposites by melt blending and the effect of the clay loading level on the modified clay and corresponding nanocomposite was studied. These nanocomposites were characterized by X-ray diffraction, transmission electron microscopy, thermogravimetric analysis and cone calorimetry. The results show a mixed intercalated/delaminated morphology with good nanodispersion. The compatibility between the methylacrylate-subsituted clay and poly(methyl methacrylate) (PMMA) are greatly improved compared to other oligomerically-modified clays.

'Learning By Doing,' The Development Of A Constructivist Program: Putting Dewey Into Practice, Martha May Tevis, John Mcbride

Teaching and Learning Faculty Publications

For the past several years a unique graduate program that has been offered to public school teachers of mathematics and science in the Lower Rio Grande Valley of Texas at the University of Texas – Pan American (UTPA). Some comments from graduates of this program are; “It has “changed my life, ” resulted in “bringing activities from the university classroom to public school classrooms to the home of my students.” “ ... helped me achieve a masters degree which would not have been possible for me as a mother of five— three of whom are enrolled in a university and …

Feasability Of Printing Rfid Antennas On Corrugated Paperboard, Juthamart Sayampol

Theses

Radio Frequency Identification (RFID) is a trace-and-track technology using RF signals for communication. RFID system was expected to replace barcodes and magnetic stripes because of its extra benefits for the supply chain: multiple items tracking and operation without line-of-sight. A major limitation of RFID technology was the cost of implementation. Since the existing method for RFID applications - "Slap and Ship" - was costly and time-and-labor consuming, this study was aimed to investigate whether the new method - printed-RFID-antenna - could be used in corrugated packaging industry for cost reduction purpose, and also whether those printed antennas could function under …

Multi-Agent Fitness Functions For Evolutionary Architecture, Richard Holden

School of Engineering, Computing and Mathematics Theses

The dynamics of crowd movements are self-organising and often involve complex pattern formations. Although computational models have recently been developed, it is unclear how well their underlying methods capture local dynamics and longer-range aspects, such as evacuation. A major part of this thesis is devoted to an investigation of current methods, and where required, the development of alternatives. The main purpose is to utilise realistic models of pedestrian crowds in the design of fitness functions for an evolutionary approach to architectural design. We critically review the state-of-the-art in pedestrian and evacuation dynamics. The concept of 'Multi-Agent System' embraces a number …

Creating Breadth In Business Education Through Service-Learning, Paul C. Godfrey, Louise M. Illes, Gregory R. Berry

Faculty Publications

We argue service-learning pedagogy and the associated educational experiences provide a partial solution to the significant problem of narrowness in business education. Servicelearning pedagogy seeks to balance academic rigor with practical relevance, set in a context of civic engagement, which furnishes students with a broader and, we argue, richer, educational experience. We present four specific critiques of business education: (1) the business curriculum focuses on functional and discrete rather than cross-functional and holistic knowledge; (2) coursework emphasizes practical problem-solving “tool kits” rather than deep theoretical knowledge; (3) the underlying paradigm of business education views humanity and human interactions in purely …

Early Decisions: A Regulatory Framework, John Beshears, James J. Choi, David Laibson, Brigitte C. Madrian

Faculty Publications

We describe a regulatory framework that helps consumers who have difficulty sticking to their own long-run plans. Early Decision regulations help long-run preferences prevail by allowing consumers to partially commit to their long-run goals, making it harder for a momentary impulse to reverse past decisions. In the cigarette market, examples of Early Decision regulations include restricting the locations or times at which cigarettes are sold, delaying the receipt of cigarettes following purchase, and allowing a consumer to choose in advance the legal restrictions on her own cigarette purchases. A formal model of Early Decision regulations demonstrates that Early Decisions are …

Thorium-Based Thin Films As Highly Reflective Mirrors In The Euv, David D. Allred, William R. Evans, Jed E. Johnson, Richard L. Sandberg, R. Steven Turley

Faculty Publications

As applications for extreme ultraviolet (EUV) radiation have been identified, the demand for better optics has also increased. Thorium and thorium oxide thin films (19 to 61 nm thick) were RF-sputtered and characterized using atomic force microscopy (AFM), spectroscopic ellipsometry, low-angle x-ray diffraction (LAXRD), x-ray photoelectron spectroscopy (XPS), and x-ray absorption near edge structure (XANES) in order to assess their capability as EUV reflectors. Their reflectance and absorption at different energies were also measured and analyzed at the Advanced Light Source in Berkeley. The reflectance of oxidized thorium is reported between 2 and 32 nm at 5, 10, and 15 …

Town Of Brentwood. Annual Town And School District Reports For The Year Ending December 31, 2004., Brentwood Town Representatives

Brentwood, NH Annual Reports

This is an annual report containing vital statistics for a town/city in the state of New Hampshire.

The Ultrasonic/Shear-Force Microscope: A Metrology Tool For Surface Science And Technology, Andres H. La Rosa, Nan Li, K. Asante

Physics Faculty Publications and Presentations

This paper describes recent results obtained with the Ultrasonic/Shear-Force Microscope (SUNM), an analytical tool suitable for investigating the quite different dynamic displayed by fluid-like films when subjected to mesoscopic confinement and while in intimate contact with two sliding solid boundaries. The SUNM uses two sensory modules to concurrently but independently monitor the effects that fluid-mediated interactions exert on two sliding bodies: the microscope’s sharp probe (attached to a piezoelectric sensor) and the analyzed sample (attached to an ultrasonic transducer). This dual capability allows correlating the fluid-like film’s viscoelastic properties with changes in the probe’s resonance frequency and the generation of …

Modeling The Evolution Of Inhomogeneities, Marek Elźanowski, Serge Preston

Mathematics and Statistics Faculty Publications and Presentations

A model of an anelastic evolution law of a defective continuum is discussed, emphasizing the role of the Clausius-Duhem inequality in selecting admissible processes.

Acww: Adding Automation To The Cognitive Walkthrough For The Web (Cww), Richard Brown

UNF Graduate Theses and Dissertations

The Cognitive Walkthrough for the Web (CWW) is a Usability Evaluation Method that can be used as an approach to evaluate a website. Unfortunately, the original formulation of CWW has been applied by researchers in the area as a set of a semi-manual processes, which have proven to be extremely time-consuming, and as with any semi-manual process, error-prone. This thesis presents a web-based approach to automate CWW, which we call ACWW. The automation of these processes implies, on the one hand, that researchers can reduce the amount of time dedicated to computing the results associated with performing various analyses. On …

Incompressible Finite Elements Via Hybridization. Part I: The Stokes System In Two Space Dimensions, Bernardo Cockburn, Jay Gopalakrishnan

Mathematics and Statistics Faculty Publications and Presentations

In this paper, we introduce a new and efficient way to compute exactly divergence-free velocity approximations for the Stokes equations in two space dimensions. We begin by considering a mixed method that provides an exactly divergence-free approximation of the velocity and a continuous approximation of the vorticity. We then rewrite this method solely in terms of the tangential fluid velocity and the pressure on mesh edges by means of a new hybridization technique. This novel formulation bypasses the difficult task of constructing an exactly divergence-free basis for velocity approximations. Moreover, the discrete system resulting from our method has fewer degrees …

Nédélec Spaces In Affine Coordinates, Jay Gopalakrishnan, Luis E. García-Castillo, Leszek Demkowicz

Mathematics and Statistics Faculty Publications and Presentations

In this note, we provide a conveniently implementable basis for simplicial Nédélec spaces of any order in any space dimension. The main feature of the basis is that it is expressed solely in terms of the barycentric coordinates of the simplex.

Curvature Of The Weinhold Metric For Thermodynamical Systems With 2 Degrees Of Freedom, Manuel Santoro, Serge Preston

Mathematics and Statistics Faculty Publications and Presentations

In this work the curvature of Weinhold (thermodynamical) metric is studied in the case of systems with two thermodynamical degrees of freedom. Conditions for the Gauss curvature R to be zero, positive or negative are worked out. Signature change of the Weinhold metric and the corresponding singular behavior of the curvature at the phase boundaries are studied. Cases of systems with the constant C_v, including Ideal and Van der Waals gases, and that of Berthelot gas are discussed in detail.

A Solvable Model For Gravity Driven Granular Dynamics, J. J. P. Veerman

Mathematics and Statistics Faculty Publications and Presentations

We discuss a toy model to study the dynamics of individual particles in avalanches. The model describes a particle launched from an inclined infinite staircase. The particle is not allowed to bounce when it collides with the staircase. During the collision, the particle loses some energy, and after that slides on to the end of the step it landed on. The process then repeats itself. The dynamics of this no-bounce model can essentially be completely understood. Partial versions of some results were stated and argued in previous work. Here we give a full description together with all the proofs. We …

Search For Gravitational Waves From Galactic And Extra-Galactic Binary Neutron Stars, B. P. Abbott, R. Abbott, Mario C. Diaz, Wm. R. Johnston, Soma Mukherjee, Soumya Mohanty, Cristina V. Torres

Physics & Astronomy Faculty Publications

We use 373 hours (≈15 days) of data from the second science run of the LIGO gravitational-wave detectors to search for signals from binary neutron star coalescences within a maximum distance of about 1.5 Mpc, a volume of space which includes the Andromeda Galaxy and other galaxies of the Local Group of galaxies. This analysis requires a signal to be found in data from detectors at the two LIGO sites, according to a set of coincidence criteria. The background (accidental coincidence rate) is determined from the data and is used to judge the significance of event candidates. No inspiral gravitational-wave …

Modeling Basketball Free Throws, Andrew Lang, Joerg M. Gablonsky

College of Science and Engineering Faculty Research and Scholarship

This paper presents a mathematical model for basketball free throws. It is intended to be a supplement to an existing calculus course and could easily be used as a basis for a calculus project. Students will learn how to apply calculus to model an interesting real-world problem, from problem identification all the way through to interpretation and verification. Along the way we will introduce topics such as optimization (univariate and multiobjective), numerical methods, and differential equations.

Pay For Short-Term Performance: Executive Compensation In Speculative Markets, Patrick Bolton, José Scheinkman, Wei Xiong

Center for Contract and Economic Organization

We argue that the root cause behind the recent corporate scandals associated with CEO pay is the technology bubble of the latter half of the 1990s. Far from rejecting the optimal incentive contracting theory of executive compensation, the recent evidence on executive pay can be reconciled with classical agency theory once one expands the framework to allow for speculative stock markets.

Convergent Sequences Of Composition Operators, Valentin Matache

Mathematics Faculty Publications

Composition operators Cφ on the Hilbert Hardy space H² over the unit disk are considered.

The Role Of Gender And Race In Determining Returns To Higher Education: Evidence From Annual Demographic Survey, Gayatri Rajendra Deshpande

Masters Culminating Experiences (1993-2011)

This study’s objective is to determine the net present values (NPV) of both a master’s degree and Ph.D. degree for six demographic categories. One of the purposes of this study is to determine whether from a social perspective a master’s and Ph.D. degree should be pursued. Cost/benefit analysis is performed to determine whether social benefits exceed social costs of these degree programs. The goal is to determine whether it is advantageous to society to obtain more education. A second and equally important purpose of this study is to determine the role of gender and race in establishing returns to higher …

Direct Selling By Urban Farmers: Constraints In Value Creation, Albert C. Manyengawana

Masters Culminating Experiences (1993-2011)

According to Heimlich (1989), one of the leading development economists who has published several articles on small and urban farming, there are two major forms of urban farms namely backyard gardens and community gardens. These may, further be classified into recreational, adaptive, and traditional farms. Urban farms emerged as a direct response to beautify the landscape, provide food security and serve as an additional income source. Over time, changes in the farming sector allowed farmers to adopt direct marketing initiatives, circumventing the intermediaries in the distribution chain. These tactics of selling directly to consumers included farmers’ markets, road-side sales, and …

A Uniform Approach To Logic Programming Semantics, Pascal Hitzler, Matthias Wendt

Computer Science and Engineering Faculty Publications

Part of the theory of programming and nonymonotonic reasoning concerns the study of fixed-point semantics for these paradigms. Several different semantics have been proposed during the last two decades, and some have been more successful and acknowledged than others. The rationales behind those various semantics have been manifold, depending on one's point of view, which may be that of a programmer or inspired by commonsense reasoning, and consequently the constructions which lead to these semantics are technically very diverse, and the exact relationships between them have not yet been fully understood. In this paper, we present a conceptually new method, …