Digital Commons Network^™

Crystal Growth, Spectroscopic Characterization, And Laser Performance Of A New Efficient Laser Material Nd:Ba-5(Po4)(3)F, G. B. Loutts, C. Bonner, C. Meegoda, H. Ries, M. A. Noginov, N. Noginova, M. Curley, P. Venkateswarlu, A. Rapaport, M. Bass

Faculty Bibliography 1990s

High quality single crystals of neodymium doped barium fluorapatite have been grown by the Czochralski technique and evaluated as an optical gain medium. A product of the emission cross section and lifetime of Nd3+ luminescence of more than 1.8x10(-22) cm(2) s at 1055 nm, and laser performance with slope efficiency up to 65% have been obtained.

Spin-Ensemble Density-Functional Theory For Inhomogeneous Quantum Hall Systems, M. I. Lubin, O. Heinonen, M. D. Johnson

Faculty Bibliography 1990s

We have developed an ensemble density-functional theory that includes spin degrees of freedom for non-uniform quantum Hall systems. We have applied this theory using a local-spin-density approximation to study the edge reconstruction of parabolically confined quantum dots. For a Zeeman splitting below a certain critical value, the edge of a completely polarized maximum density droplet reconstructs into a spin-unpolarized structure. For larger Zeeman splittings, the edge remains polarized and develops an exchange hole.

Transform Coding Of Signals Using Approximate Trigonometric Expansions, Qurban A. Memon, Takis Kasparis

Faculty Bibliography 1990s

For signal representation it is always preferred that a signal be represented using a minimum number of parameters. in any transform coding scheme, the central operation is the reduction of correlation and thereby with appropriate coding of the transform coefficients, allows data compression to be achieved. The objective of data encoding is to transform a data array into a statistically uncorrelated set. This step is typically considered a "decorrelation" step, because in the case of unitary transformations the resulting transform coefficients are relatively uncorrelated. Most unitary transforms have the tendency to compact the signal energy into relatively few coefficients. The …

The Renormalization Group And Dynamical Triangulations, Ray L. Renken

Faculty Bibliography 1990s

A block spin renormalization group approach is introduced which can be applied to dynamical triangulations in any dimension.

A Renormalization Group For Dynamical Triangulations In Arbitrary Dimensions, Ray L. Renken

Faculty Bibliography 1990s

A block spin renormalization group approach is proposed for the dynamical triangulation formulation of quantum gravity in arbitrary dimensions. Renormalization group flow diagrams are presented for the three-dimensional and four-dimensional theories near their respective transitions.

An Approach To The Synthesis Of Biological Tissue, Jannick P. Rolland, Robin N. Strickland

Faculty Bibliography 1990s

Mathematical phantoms developed to synthesize realistic complex backgrounds such as those obtained when imaging biological tissue, play a key role in the quantitative assessment of image quality for medical and biomedical imaging. We present a modeling framework for the synthesis of realistic tissue samples. The technique is demonstrated using radiological breast tissue. The model employs a two-component image decomposition consisting of a slowly, spatially varying mean-background and a residual texture image. Each component is synthesized independently. The approach and results presented here constitute an important step towards developing methods for the quantitative assessment of image quality in medical and biomedical …

Ab Initio Calculation For Low-Energy Elastic Scattering Of Electrons From Sulfur Atoms, H. P. Saha, Dong Lin

Faculty Bibliography 1990s

The multiconfiguration Hartree-Fock method for continuum wave functions has been used to perform calculations of elastic scattering of electrons from the open-shell sulfur atom at low energies. The electron correlation and polarization of the sulfur atom by the scattered electron, which are very important in this calculation, have been taken into account very accurately ab initio through the configuration-interaction procedure by optimizing both bound and continuum orbitals simultaneously at each kinetic energy of the scattered electron. The scattering lengths, phase shifts, and differential, total and momentum-transfer cross sections for electrons elastically scattered from sulfur atoms are calculated for the impact-energy …

Transfer Of Momentum And Torque From A Light Beam To A Liquid, A. Yu. Savchenko, N. V. Tabiryan, B. Ya. Zel'dovich

Faculty Bibliography 1990s

Refraction or absorption of light results in the force and torque, i.e., transfer of momentum and angular momentum from light to the medium. In transversely inhomogeneous beams, the force per unit volume f may have curlf not equal 0 leading to flow or to nonthermal and nongravitational convection in liquids. The force and the torque in scattering systems are as strong as in absorbing materials and may allow one to carry out experiments avoiding thermal effects. Nonlinear optical response of liquid crystals due to this convection is discussed.

Dynamics Of Low-Dimensional Dipolar Systems, J. M. Sun, Weili Luo

Faculty Bibliography 1990s

Time decays of low-dimensional magnetic dipoles with anisotropic energy barriers were studied theoretically. We found that the dynamic behaviors are interaction specific. For a chain with ferromagnetic coupling, a single mode dominates and the decay is essentially exponential. For antiferromagnetic coupling, the dynamics can be characterized by two distinct groups of time scales. The spectrum results in a plateau in the decay of remanent magnetization. This novel behavior differs from the prediction of the mean-field theory. For a two-dimensional rectangular lattice, a transition between the bimodal decay and a quasilogarithmic decay occurs when the ratio of length to width varies.

Work Function Determination Of Zinc Oxide Films, K. B. Sundaram, Ashamin Khan

Faculty Bibliography 1990s

Zinc oxide-silicon heterojunctions were fabricated using both n- and p-type silicon. The zinc oxide films were deposited by the magnetron sputtering process at various substrate temperatures to form these devices. The electrical properties of these devices were measured and the work function of the zinc oxide was evaluated from these properties.

Deposition And X-Ray Photoelectron Spectroscopy Studies On Sputtered Cerium Dioxide Thin Films, K. B. Sundaram, P. F. Wahid, O. Melendez

Faculty Bibliography 1990s

Cerium dioxide is a rare earth oxide material that can be useful in various optical and electronic applications because of its high refractive index and its dielectric constant. The purpose of this study was to conduct an x-ray photoelectron spectroscopy analysis of sputtered cerium dioxide thin films. The thin films were deposited onto glass substrates using rf magnetron sputtering. A cerium dioxide target was used and various oxygen-argon gas flow ratios under different sputtering power levels were used for deposition. The results presented here characterize the properties of the rf sputtered cerium dioxide thin films under different deposition conditions.

Practical Considerations On Color Image Enhancement Using Homomorphic Filtering, Liviu I. Voicu, Harley R. Myler, Arthur R. Weeks

Faculty Bibliography 1990s

We present a study concerning the practical possibilities of using the homomorphic filtering for color image enhancement, Two of the most popular color models, RGB and C-Y (color difference), are employed and the results are comparatively discussed. The homomorphic filtering has proven to be a viable tool for both color models considered.

Polymer Waveguides With Optimized Overlap Integral For Modal Dispersion Phase-Matching, W. Wirges, S. Yilmaz, W. Brinker, S. Bauer-Gogonea, S. Bauer, M. Jäjer, G. I. Stegeman, M. Ahlheim, M. Stähelin, B. Zysset, F. Lehr, M. Diemeer, M. C. Flipse

Faculty Bibliography 1990s

Modal dispersion phase-matched second harmonic generation is demonstrated in new poled polymer waveguide geometries with a nonlinear optical core consisting of two side-chain polymers with different glass transition temperatures. After poling above and between the respective glass transitions, the sign of the nonlinear optical coefficient is reversed in the two polymers, thereby improving the overlap integral. Conversion efficiencies up to 7%/W cm(2) were achieved in the first experiments.

Mathematical Modeling Of Melting During Laser Materials Processing, J. Xie, A. Kar

Faculty Bibliography 1990s

Melting is encountered in almost all laser materials processing. This article deals with a one-dimensional heat conduction problem to investigate the melting rate during laser materials processing. The problem is solved approximately to obtain a correlation among melt depth, power density, and laser irradiation time. Based on this correlation, the dynamics of melting, a relationship between the melt depth and power density and an average melting velocity are expressed by simple analytic formulas. These expressions are further simplified for high power densities (I greater than or equal to 10(9) W/m(2)). The times to reach the melting and boiling temperatures at …

Melting And Vaporization For Large-Area Film Removal With A Chemical Oxygen-Iodine Laser, J. Xie, A. Kar

Faculty Bibliography 1990s

Large-area film removal with lasers is a physical process of melting and vaporization of films. A mathematical model is developed to simulate the melting and vaporization of films under the irradiation of a chemical oxygen-iodine laser. The cross section of the film after laser scanning and the substrate surface temperature during laser irradiation are presented. There is an optimum laser power at which relatively wide films can be removed by maintaining low temperature at the substrate surface. The optimum laser power is associated with other process parameters. The results of film removal with TEM31 and TEM00 beams are compared, and …

Vatican Ii: The Continuing Agenda, Anthony J. Cernera, Ed.

Sacred Heart University Press Books

The essays in this collection examine the spirit of Vatican II at work during a period of rapid changes and profound transitions within the global community.

The Origins Of The Great Leap Forward (Book Review), Thomas D. Curran

History Faculty Publications

Book review by Thomas D. Curran.

Domenach, J. L. (1995). The origins of the great leap forward: The case of one Chinese province. Boulder: Westview Press.

Fuchs, Joseph, S.J. Moral Demands And Personal Obligations (Book Review), John R. Berkman

Philosophy, Theology and Religious Studies Faculty Publications

Book review by John R. Berman.

Fuchs, Josef. Moral Demands and Personal Obligations. Brian McNeil, tr. Washington, D.C.: Georgetown University Press, 1993. ISBN 9780878405374; 9780878405435 (pbk.)

Masters Programs Division Of Health Services Administration, Nova Southeastern University

Huizenga Postgraduate Course Catalogs

No abstract provided.

Master's Programs East Campus & Cluster Sites Schedule Of Classes Winter January-March 1997, Nova Southeastern University

Huizenga Postgraduate Course Catalogs

No abstract provided.

Reckless Complicity, Sanford H. Kadish

Journal of Criminal Law and Criminology

No abstract provided.

Just Say No Excuse: The Rise And Fall Of The Intoxication Defense, Mitchell Keiter

Journal of Criminal Law and Criminology

No abstract provided.

Comment On Ingraham's Moral Duty To Talk And The Right To Silence, Gregory W. O'Reilly

Journal of Criminal Law and Criminology

No abstract provided.

Driving While Black And All Other Traffic Offenses: The Supreme Court And Pretextual Traffic Stops, David A. Harris

Journal of Criminal Law and Criminology

No abstract provided.

Supreme Court Rejects Fifth And Fourteenth Amendment Protection Against The Forfeiture Of An Innocent Owner's Property, Jami Brodey

Journal of Criminal Law and Criminology

No abstract provided.

Protecting First Federal Habeas Corpus Petitions: Closing The Opening Left By Gomez, John L. Kolakowski

Journal of Criminal Law and Criminology

No abstract provided.

Rejecting The Clear And Convincing Evidence Standard For Proof Of Incompetence, Alaya B. Meyers

Journal of Criminal Law and Criminology

No abstract provided.

Rape In The Criminal Justice System, David P. Bryden, Sonja Lengnick

Journal of Criminal Law and Criminology

No abstract provided.

Book Reviews

Journal of Criminal Law and Criminology

No abstract provided.

A Study Of Body Dissatisfaction And Drive For Thinness Between African-American And Caucasian College Women, Suzanne M. Monroe

Theses

The purpose of this study is to explore the similarities and/or differences in body dissatisfaction and drive for thinness between Caucasian and African-American college women. The Eating Disorder Inventory-2 (EDI-2) as well as questions measuring hours spent reading women's magazines and family, close friends, and significant other's view on the importance of physical thinness was distributed to 18 to 25 year old African-American and Caucasian college women at Southern Illinois University at Edwardsville (SIUE). The EDI-2 is a self-report questionnaire that consists of 91 questions which generate 11 independent subscales. Only 3 of the II subscales were analyzed: I) Drive …