Physical Sciences and Mathematics Commons^™

Poetry, Monte J. Zerger

Humanistic Mathematics Network Journal

No abstract provided.

And This Is The Tale That Xeno Told, Sanda Z. Keith

Humanistic Mathematics Network Journal

No abstract provided.

What Is Mathematics?: An Answer To Our Liberal Arts Dilemma, Bruce Williamson

Humanistic Mathematics Network Journal

No abstract provided.

Human Values And Science, Art & Mathematics, Cindy Cichy

Humanistic Mathematics Network Journal

No abstract provided.

Reaction To Human Values, Science, And Mathematics By Lillian R. And Hugh Gray Lieber, Jeanette Nelson

Humanistic Mathematics Network Journal

No abstract provided.

Math Puzzler, Paul J. Tobias

Humanistic Mathematics Network Journal

No abstract provided.

The Study Of Mathematics And Growth In The Spirit, Rosemary Schmalz

Humanistic Mathematics Network Journal

No abstract provided.

Principal Points And Self-Consistent Points Of Elliptical Distributions, Thaddeus Tarpey, Luning Li, Bernard Flury

Mathematics and Statistics Faculty Publications

In this paper we study principal points and self-consistent points of p-variate elliptical distributions. We also discuss implications of our results for the computation and estimation of principal points.

Imaging The Host Galaxies Of High-Redshift Radio-Quiet Qsos, James D. Lowenthal, Timothy M. Heckman, Matthew D. Lehnert, J. H. Elias

Astronomy: Faculty Publications

We present new deep K-band and optical images of four radio-quiet QSOs at z ≈ 1 and six radio-quiet QSOs at z ≈ 2.5, as well as optical images only of six more at z ≈ 2.5. We have examined the images carefully for evidence of extended "fuzz" from any putative QSO host galaxy. None of the z ≈ 2.5 QSOs shows any extended emission, and only two of the z ≈ 1 QSOs show marginal evidence for extended emission. Our 3 σ detection limits in the K images, mK ≃ 21 for an isolated source, would correspond approximately to …

Water Resouces Review - February 1995 Vol 8 No 1, Annis Water Resources Institute

AWRI Reviews

No abstract provided.

A Pyramid Approach To Stereo Coorespondence, Piper L. Canfield, Anupam Joshi

Department of Computer Science Technical Reports

No abstract provided.

A Software Architecture To Support Misuse Intrusion Detection, Sandeep Kumar, Eugene H. Spafford

Department of Computer Science Technical Reports

No abstract provided.

Parallel Adaptive Mesh Generation And Decomposition, Poting Wu, Elias N. Houstis

Department of Computer Science Technical Reports

No abstract provided.

Consistent And Recoverable Agent-Based Access To Heterogeneous Mobile Databases, Evaggelia Pitoura, Bharat Bhargava

Department of Computer Science Technical Reports

No abstract provided.

Adapting Distributed Database Systems For High Availability, Xiangning Liu, Evaggelia Pitoura, Bharat Bhargava

Department of Computer Science Technical Reports

No abstract provided.

Multi-Parameterized Schwarz Alternating Methods For Elliptic Boundary Value Problems, S. B. Kim, A. Hadjidimos, Elias N. Houstis, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

Active Defense Of A Computer System Using Autonomous Agents, Mark Crosbie, Eugene H. Spafford

Department of Computer Science Technical Reports

No abstract provided.

Concurrent And Fail-Safe Replicated Simulations On Heterogeneous Networks: An Introduction To Eclipse, Felipe Knop, Edward Mascarenhas, Vernon J. Rego, V. S. Sunderam

Department of Computer Science Technical Reports

No abstract provided.

Dispersal Dynamics Of The Bivalve Gemma Gemma In A Patchy Environment, John A. Commito, Carol A. Currier, Laura R. Kane, Kathleen A. Reinsel, Irene M. Ulm

Environmental Studies Faculty Publications

The purpose of this study was to analyze the dispersal dynamics of the ovoviviparous bivalve Gemma gemma (hereafter referred to as Gemma) in an environment disturbed by the pit-digging activities of horseshoe crabs, Limulus polyphemus. Gemma broods its young and has no planktonic larval stage, so all dispersal is the result of juvenile and adult movement. Animal movement was measured using natural crab pits, hand-dug simulated crab pits, and cylindrical bottom traps in the intertidal zone at Tom's Cove, Virginia, USA.

This study demonstrated that horseshoe crabs create localized patches with reduced densities of Gemma, that all sizes and ages …

Heavy Ion Track-Structure Calculations For Radial Dose In Arbitrary Materials, Francis A. Cucinotta, Robert Katz, John W. Wilson, Rajendra R. Dubey

Robert Katz Publications

The δ-ray theory of track structure is compared with experimental data for the radial dose from heavy ion irradiation. The effects of electron transmission and the angular dependence of secondary electron ejection are included in the calculations. Several empirical formulas for electron range and energy are compared in a wide variety of materials in order to extend the application of the track-structure theory. The model of Rudd for the secondary electron spectrum in proton collisions, which is based on a modified classical kinematics binary encounter model at high energies and a molecular promotion model at low energies, is employed. For …

Convenient Determination Of Concentration And Energy In Deep-Level Transient Spectroscopy, David C. Look, Z-Q. Fang, J. R. Sizelove

Physics Faculty Publications

For defects or impurities with deep energy levels, such as the commonly observed EL2, EL3, and EL6 in GaAs, it is very important to take account of the so‐called λ effect in order to deduce the correct concentrations of these centers when using capacitance techniques. By measuring capacitance at several forward bias voltages for a given reverse bias voltage it is possible to determine concentration N_T and energy E_T without requiring the usual emission rate analysis. Convenient formulas for N_T and E_T are given, although only N_T can be determined with a high degree of …

Dynamics Of Order-Parameter-Conserving Ising Models At T > Tc, J.C. Lee

Faculty Publications

http://journals.aps.org/prb/pdf/10.1103/PhysRevB.51.2661

Far-Ultraviolet Stellar Photometry: Fields In Sagittarius And Scorpius, Edward G. Schmidt, George R. Carruthers

Edward Schmidt Publications

Far-ultraviolet photometry for 741 objects in a field in Sagittarius centered near M8 and 54 1 objects in a field centered near ζ Scorpii is presented. These data were extracted from electrographic images obtained with two cameras during a shuttle flight in 1991 April/May. The cameras provided band passes with λ_eff= 1375 Å and λ_eff= 1781 Å. Synthetic colors show that these bands are sensitive to effective temperature for hot stars. Our measurements were placed on a quantitative far-ultraviolet magnitude scale by convolving the spectra of stars observed by IUE with our cameras' spectral response functions. …

Time-Dependent Perturbation And Exact Results For The Periodically Driven Quantum Harmonic Oscillator, Russell Akridge

Faculty Articles

Transition amplitudes and probabilities for the harmonic oscillator with a forcing function proportional to cos(omegat) beginning at time zero are calculated to lowest nonvanishing order using time-dependent perturbation theory. The results are compared with the exact amplitudes and probabilities. When the exact amplitude is expanded in a Taylor series in powers of the coupling constant, the individual terms turn out to be the perturbation amplitudes, showing that the complete series of perturbation amplitudes converges to the exact amplitude.

Performance Characterization Of The Caltech Compact Torus Injector, P. K. Loewenhardt, Michael R. Brown, J. Yee, P. M. Bellan

Physics & Astronomy Faculty Works

A device is described which is designed to refuel tokamaks of major radius [approximately-equal-to]1 m and magnetic field [approximately-equal-to]1 T by the injection of a compact torus. The injector utilizes an acceleration stage which adds kinetic energy to the compact torus so that it can penetrate the tokamak magnetic field. The performance of the device was found to be optimized in an unexpected parameter regime. It is theorized that in this regime the accelerator takes part in the formation of the CT. A performance threshold with respect to accelerator current will be presented and methods of impurity reduction will be …

Patterns Of Early Lake Ontogeny In Glacier Bay As Inferred From Diatom Assemblages, Sherilyn C. Fritz, Daniel R. Engstrom

Department of Earth and Atmospheric Sciences: Faculty Publications

We studied a series of recently formed lakes along a deglaciation chronosequence in Glacier Bay National Park to examine changes in water chemistry, primary production, and biotic composition that accompany the early ontogeny of north-temperate lakes. Successional trends in these freshwater ecosystems have been explored with a two-tiered approach that includes (1) the comparison of limnological conditions among lakes of known age and in different stages of primary catchment succession, and (2) the inference of water-chemistry trends in individual sites based on fossil diatom stratigraphy. This paper emphasizes the reconstruction of limnological trends from fossil diatom assemblages. The modem distribution …

Observation Of Parity-Unfavored Transitions In The Nonresonant Photoionization Of Argon, B. Langer, J. Viefhaus, Oliver Hemmers, A. Menzel, R. Wehlitz, U. Becker

Environmental Studies Faculty Publications

Single-photon ionization of an atom or molecule can be subdivided into parity-favored and -unfavored transitions, the latter characterized by electron emission, preferentially perpendicular to the electric vector. The nonresonant existence of these transitions is shown experimentally and studied over an extended energy range for a variety of satellite transitions in atomic argon. The spectra exhibit several clearly resolved satellite lines with strongly negative β values close to -1, independent of the photon energy. The results confirm the corresponding predictions of angular-momentum transfer theory.

Water Resources Studies Along The Arkansas-Oklahoma Border, Kenneth F. Steele

Technical Reports

The watershed approach to water resource issues recently has been re-discovered. Scientists and managers recognize the need to consider the entire watershed when delineating and solving today's water resource problems. A simple example is the effect that streams have on the ultimate "health" of a reservoir. Although technically the term watershed should be used only in reference to surface water, the importance of ground water is included in the watershed approach to problems. In recognition that we all "live upstream and downstream," the Arkansas Water Resources Center and the Oklahoma Water Resources Institute sponsored a conference titled "Water Resource Studies …

Convective Chemical-Wave Propagation In The Belousov- Zhabotinsky Reaction, Y. Wu, D. A. Vasquez, Boyd F. Edwards, J. W. Wilder

All Physics Faculty Publications

We investigate the onset of convection for chemical-wave propagation in the Belousov-Zhabotinsky reaction based on the two-variable Oregonator model coupled with the fluid dynamic equations. For chemical waves in a vertical slab, two-dimensional convection occurs only for slab widths greater than a critical threshold width. The convective threshold is different for ascending and descending waves. Convectionless waves are flat and propagate with constant speed. Above the onset of convection, the wave velocity increases and the flat wave deforms due to two counterrotating steady rolls. For a horizontal slab, convection is always present and the wave velocity increases with increasing slab …

Passageway Around The Redlands Diversion Dam And Interim Agreement To Provide Water For Endangered Fish, Bureau Of Reclamation, Fish And Wildlife Service, U.S. Department Of The Interior

All U.S. Government Documents (Utah Regional Depository)

This draft environmental assessment (EA) discusses two related actions proposed to assist in the recovery of two Federally-listed endangered fish species. The actions are intended to restore use of historic and designated critical habitat of the Gunnison River by the Colorado squawfish and razorback sucker. The proposed actions are to: construct and operate a fish passageway around the Redlands Diversion Dam; and execute an interim (short-term) memorandum of agreement (water agreement) to supply streamflows needed to operate the passageway and maintain downstream fish habitat and access for fish to the passageway. The EA is prepared jointly by the Bureau of …