Digital Commons Network^™

Effects Of Environmental Regulations On Manufacturing Plant Births: Evidence From A Propensity Score Matching Estimator, John A. List, Daniel L. Millimet, Per G. Fredriksson, W. Warren Mchone

Faculty Bibliography 2000s

This study examines the effects of air quality regulation on economic activity. Anecdotal evidence and some recent empirical studies suggest that an inverse relationship exists between the stringency of environmental regulations and new plant formations. Using a unique county-level data set for New York State from 1980 to 1990, we revisit this conjecture using a seminonparametric method based on propensity score matching. Our empirical estimates suggest that pollution-intensive plants are responding to environmental regulations; more importantly, we find that traditional parametric methods used in previous studies may dramatically understate the impact of more stringent regulations.

Properties Of Quadratic Multi-Soliton Generation Near Phase-Match In Periodically Poled Potassium Titanyl Phosphate, Sergey Polyakov, Ladislav Jankovic, Hongki Kim, George Stegeman, Silvia Carrasco, Lluis Torner, Mordechai Katz

Faculty Bibliography 2000s

The properties of the multi-quadratic-soliton generation process have been investigated both theoretically and experimentally near and on phase-match in non-critically-phase-matched, periodically poled, potassium titanyl phosphate (PPKTP). It was found that multi-soliton generation occurs primarily due to asymmetry in the input beam and at phase-matching. The number of solitons generated depended on the input intensity in a non-trivial way.

Regression M-Estimators With Non-I.I.D. Doubly Censored Data, Jian-Jian Ren

Faculty Bibliography 2000s

Considering the linear regression model with fixed design, the usual M-estimator with a complete sample of the response variables is expressed as a functional of a generalized weighted bivariate empirical process, and its asymptotic normality is directly derived through the Hadamard differentiability property of this functional and the weak convergence of this generalized weighted empirical process. The result reveals the direct relationship between the M-estimator and the distribution function of the error variables in the linear model, which leads to the construction of the M-estimator when the response variables are subject to double censoring. For this proposed regression M-estimator with …

University Of Central Florida Commencement, December 13 & 14, 2002, University Of Central Florida

Commencement Programs

No abstract provided.

An Evening With Cub Fans In Scotland: The Craigs Of Rockford, Richard C. Crepeau

On Sport and Society

Cub fans are a unique species. Attachment to losing is taken to a level of religious fanaticism by the Cub faithful. Of course the charm of the Cubs is not simply that they lose, but that they are lovable losers. This is what inspires undying devotion in their fans. Indeed if the Cubs were to do the improbable, nay the impossible, and win a World Series I suspect Cub fans would lose the essence of their Cubness.

Central Florida Future, Vol. 35 No. 31, December 5, 2002

Central Florida Future

Fraternity honors departed brother; Surviving the streets.

The Learning Marketspace, November 1, 2002, Bob Heterick, Carol Twigg

The Learning MarketSpace (7/99 - 2/03)

No abstract provided.

University Of Central Florida Commencement, August 3, 2002, University Of Central Florida

Commencement Programs

No abstract provided.

Sandspur, Vol 108, No 18, May 03, 2002, Rollins College

The Rollins Sandspur

Rollins College student newspaper, written by the students and published at Rollins College. The Sandspur started as a literary journal.

University Of Central Florida Commencement, May 3 & 4, 2002, University Of Central Florida

Commencement Programs

No abstract provided.

University Of Central Florida Undergraduate Catalog, 2002 - 2003, University Of Central Florida

UCF Catalogs

No abstract provided.

University Of Central Florida Graduate Catalog, 2002 - 2003, University Of Central Florida

UCF Catalogs

No abstract provided.

Sandspur, Vol 108, No 12, February 01, 2002, Rollins College

The Rollins Sandspur

Rollins College student newspaper, written by the students and published at Rollins College. The Sandspur started as a literary journal.

Central Florida Future, Vol. 34 No. 19, January 23, 2002

Central Florida Future

Shuttles give students a free ride on off campus; Grocery store showdown; Bush signs grant UCF gets $5.5 million.

University Of Central Florida Ir 3-Year Fact Book - Ay 1999-2000 Through 2001-2002, University Of Central Florida

Historical Fact Book and Enrollment

Historical fact book and enrollment data for the University of Central Florida.

The Learning Marketspace, January 1, 2002, Bob Heterick, Carol Twigg

The Learning MarketSpace (7/99 - 2/03)

No abstract provided.

Rollins College Brevard Campus, Rollins College

Text Materials of Central Florida

Rollins College catalogue with list of faculty and students and courses by department.

Simple Physics Of Quadratic Spatial Solitons, Gaetano Assanto, George I. Stegeman

Faculty Bibliography 2000s

Spatial solitons in quadratically nonlinear media result from the interplay of parametric gain, diffraction and cascading phase shift. Their main features are well understood in mathematical terms, and several experiments have been successfully carried out which demonstrate their observability and most important properties. Here we provide an intuitive interpretation of some of the underlying physics, outlining the processes that govern their excitation, propagation and interaction forces.

Electrophoresis Of An End-Labeled Polymer Chain: A Molecular Dynamics Study, Aniket Bhattacharya, Andrey Milchev

Faculty Bibliography 2000s

We study the conformational and the dynamic properties of an end-labeled (telechelic) polymer chain embedded in a porous medium made of randomly distributed immobile spherical obstacles using a stochastic molecular dynamics (MD) simulation method for several obstacle densities rho(imp) and for various field intensities F(x) applied only to one end of the chain. For F(x)=0, the chain initially shrinks with increasing density of the obstacles rho(imp). In general, for small F(x) and low rho(imp), the chain elongates along the direction of the force and shrinks in the transverse direction whereby this effect becomes more pronounced at larger chain lengths. However, …

Imagining Teachers: Rethinking Gender Dynamics In Teacher Education, Karen Biraimah

Faculty Bibliography 2000s

No abstract provided.

Induced Modulation Instability Of Partially Spatially Incoherent Light With Varying Perturbation Periods, Zhigang Chen, Jill Klinger, Demetrios N. Christodoulides

Faculty Bibliography 2000s

We demonstrate experimentally that a periodic perturbation on a partially spatially incoherent optical beam induces modulation instability that depends strongly on the perturbation periods as well as on the strength of the nonlinearity and the degree of spatial coherence. At a fixed value of the nonlinearity and coherence, the incoherent modulation instability has a maximum growth at a preferred perturbation period (or spatial frequency), leading to the formation of ordered patterns. While the nonlinearity in our photorefractive system is inherently anisotropic, pattern control and pattern switching with anisotropic coherence is readily realized. Our experimental observations are in good agreement with …

The Birth Of Homological Algebra, Peter Hilton

Faculty Bibliography 2000s

No abstract provided.

Theoretically Exact Filtered Backprojection-Type Inversion Algorithm For Spiral Ct, Alexander Katsevich

Faculty Bibliography 2000s

Proposed is a theoretically exact formula for inversion of data obtained by a spiral computed tomography ( CT) scan with a two- dimensional detector array. The detector array is supposed to be of limited extent in the axial direction. The main property of the formula is that it can be implemented in a truly filtered backprojection fashion. First, one performs shift- invariant filtering of a derivative of the cone beam projections, and, second, the result is backprojected in order to form an image. Another property is that the formula solves the so- called long object problem. Limitations of the algorithm …

Existence And Properties Of Quadratic Solitons In Anisotropic Media: Variational Approach, Sergey V. Polyakov, George I. Stegeman

Faculty Bibliography 2000s

Stationary quadratic solitons associated with second harmonic generation in optically anisotropic media have been investigated both numerically and analytically using the variational approach. The solitons were found to have elliptical shapes, both for the fundamental and second harmonic, and their approximate beam waists and amplitudes as a function of the anisotropy and the soliton parameter were found. The important limits of anisotropic diffraction were compared to the well-known model of isotropic diffraction. The stability of anisotropic solitons was addressed via the Vakhitov-Kolokolov criterion and the regions of parameter space for which the solitons are stable were identified. Direct numerical simulations …

Spatially Resolved Microrheology Using Localized Coherence Volumes, G. Popescu, A. Dogariu, R. Rajagopalan

Faculty Bibliography 2000s

We propose an optical technique, based on dynamic light scattering, for investigating the local rheological response of a complex fluid over a frequency range larger than that provided by standard mechanical instrumentation. The low-coherence radiation used in a fiber optics configuration allows the measurements to be confined to a small volume around a tenth of a picoliter. The ability of the method to accurately measure both loss and storage moduli has been tested using both simple Newtonian liquids and viscoelastic, complex fluids. The possibility to monitor liquid-gel transitions in polymer solutions has also been demonstrated. The unique capability of the …

Turbulence Induced Beam Spreading Of Higher Order Mode Optical Waves, Cynthia Y. Young, Yadira V. Gilchrest, Brian R. Macon

Faculty Bibliography 2000s

It is well known that laser beams spread as they propagate through free space due to natural diffraction, and that there is additional spreading when optical waves propagate through atmospheric turbulence. Previous studies on Gaussian beams have mainly involved the lowest order mode (zero order). The study of higher order mode Gaussian beams has involved Hermite-Gaussian and Laguerre-Gaussian beams for rectangular and cylindrical geometry, respectively, These studies have developed expressions for the field and intensity in free space, in addition to developing new definitions of beam size in the receiver plane for the higher order modes. We calculate the mean …

New Phasing Algorithm For Large Segmented Telescope Mirrors, Weiyao Zou

Faculty Bibliography 2000s

We propose a new phase calibration method, called the sensor-by-sensor phase calibration method (SSPC), which is applied for the phasing of a large segmented telescope mirror. Instead of making the entire segmented mirror in phase at one time and obtaining the desired sensor readings accordingly, we serially make the local areas in phase at each sensor location and thus obtain the desired sensor readings one by one. Then we run the telescope active control system to make the segments cophase. For the case of Keck telescopes, the SSPC method uses all the 168 phase measurements at 168 phase sensor locations; …

High Frequency Communication System Modeling And Performance Enhancement, Employing Novel Adaptive Dsp Techniques, Murad M. Qahwash

Retrospective Theses and Dissertations

High Frequency (HF) communication has been shown to be a useful communication technique from the very beginning of World War I and it accelerated during World War II. This is attributed to its simplicity, ability to provide near globe connectivity at low power without repeaters, moderate cost, and ease of proliferation [1]. In fact, the HF communication system utilizes the ionosphere [2][3][4] to refract the skywave signals to a distant receiver. This ionospheric channel has some disadvantages. First, it is a non-stationary channel as the HF frequency propagation is a function of the sun spot activities, solar winds, and diurnal …

Legacy To The People: Community And The Orange County Regional History Center, Robert L. Beatty Ii

Retrospective Theses and Dissertations

The development and birth of the Orange County Regional History Center is perhaps unlike any other local history museum in the United States. Its story is worth telling because of its long gestation, the difficulties in bringing this center to life, and the goals of the people who made it possible. All of these elements are a vital part of the history of Orange County, Florida and should not be overlooked.

In this light, this thesis will discuss more fully three topics in relation to the creation of the new History Center. First, it will look at the American museum …

Individuals With Disabilities Education Act Amendments Of 1997 And Implications For School-Based Administrators, Connie Woods Collins

Retrospective Theses and Dissertations

The purpose of this study was to review historical legislation relevant to the education of individuals with disabilities, examine the 1997 Amendments to the Individuals with Disabilities Act and related case law, and to create a knowledge base from which school-based professionals can make legally sound policy and planning decisions and reduce liability for noncompliance with the applicable laws and regulations pertaining to the 1997 Amendments to the Individuals with Disabilities Education Act. In addition, the study provided insight into the law and increased the comfort levels of school-based personnel who deal with exceptional students, thereby increasing the likelihood of …