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Publications

1998

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Institution
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State Expenditures: Projections To 2010, 1998 December 31, Daniel V. Rainey Dec 1998

State Expenditures: Projections To 2010, 1998 December 31, Daniel V. Rainey

Publications

No abstract provided.


State Revenue: Projections To 2010, 1998 December 31, Holley Hewitt Ulbrich Dec 1998

State Revenue: Projections To 2010, 1998 December 31, Holley Hewitt Ulbrich

Publications

No abstract provided.


Impact Of Business Incentives On General Revenue: Projected Fiscal Costs, 1998 December 31, Daniel V. Rainey Dec 1998

Impact Of Business Incentives On General Revenue: Projected Fiscal Costs, 1998 December 31, Daniel V. Rainey

Publications

No abstract provided.


Long-Wavelength Collective Excitations In A Two-Dimensional Spin-Polarized Electron Gas: A Phenomenological Theory, D C. Marinescu, J J. Quinn Dec 1998

Long-Wavelength Collective Excitations In A Two-Dimensional Spin-Polarized Electron Gas: A Phenomenological Theory, D C. Marinescu, J J. Quinn

Publications

The dispersion relations of the collective excitations induced in a 2D spin-polarized electron gas are derived within the framework of the Landau-Silin theory applied to a two-component Fermi liquid. The quasiparticle interaction is described by spin-dependent coefficients, which are parametric functions of the initial degree of polarization. The motion of the low-energy excitations satisfies a semiclassical transport equation solved consistently with the Maxwell equations for the electromagnetic field produced by spin and charge fluctuations. The long-wavelength limit of the self-sustained oscillations is analyzed as a function of the initial degree of polarization of the system, preset by a dc magnetic …


The Economic Situation, 1998 December, Bruce Yandle Dec 1998

The Economic Situation, 1998 December, Bruce Yandle

Publications

Quarterly report on the economic situation of the United States and South Carolina.


Challenges Of Managing A Rapidly Growing And Changing County, 1998 November 19, Jim Rozier Nov 1998

Challenges Of Managing A Rapidly Growing And Changing County, 1998 November 19, Jim Rozier

Publications

Presented at the Tenth Annual Harris Page Smith Lecture in Local Government.


The Diffuse Gamma-Ray Background From Supernovae, Dieter H. Hartmann, K. Watanabe, M. D. Leising, L.-S. The Nov 1998

The Diffuse Gamma-Ray Background From Supernovae, Dieter H. Hartmann, K. Watanabe, M. D. Leising, L.-S. The

Publications

The diffuse extragalactic γ-ray background in the MeV region is believed to be due to photons from radioactivity produced in supernovae throughout the history of galaxies in the universe. In particular, γ-ray line emission from the decay chain 56Ni → 56Co → 56Fe provides the dominant photon source (Clayton & Silk 1969). Although iron synthesis occurs in all types of supernovae, the contribution to the background is dominated by Type Ia events due to their higher photon escape probabilities. Estimates of the star formation history in the universe suggest a rapid increase by a factor ∼ 10 from the present …


Collective Excitations In An Asymmetrically Spin-Polarized Quantum Well, D C. Marinescu, J J. Quinn Nov 1998

Collective Excitations In An Asymmetrically Spin-Polarized Quantum Well, D C. Marinescu, J J. Quinn

Publications

We present a phenomenological picture for the many-body excitations of a two-dimensional electron gas in a quantum well spin polarized by a dc magnetic field at an angle ␪ with the axis of the well. In the framework of the Landau theory of charged Fermi liquids, we determine the frequencies of collective modes by solving a transport equation for quasiparticles in the local electromagnetic field associated with the charge- and spin-density fluctuations. In the long-wavelength limit, analytic solutions for ␻(qជ) are obtained as functions of the degree of spin polarization and of the angle ␪.


A Statistical Treatment Of The Gamma-Ray Burst "No Host Galaxy" Problem: Ii. Energies Of Standard Candle Bursts, Dieter H. Hartmann, David L. Band, Bradley E. Schaefer Nov 1998

A Statistical Treatment Of The Gamma-Ray Burst "No Host Galaxy" Problem: Ii. Energies Of Standard Candle Bursts, Dieter H. Hartmann, David L. Band, Bradley E. Schaefer

Publications

With the discovery that the afterglows after some bursts are coincident with faint galaxies, the search for host galaxies is no longer a test of whether bursts are at cosmological distances, but rather a test of particular cosmological models. The methodology we developed to investigate the original “no host galaxy” problem is equally valid for testing different cosmological models, and is applicable to the galaxies coincident with optical transients. We apply this methodology to a family of models where we vary the total energy of standard candle bursts. We find that total isotropic energies of E < 2 ×10^52 erg are ruled out while E ∼ 10^53 erg is favored.


Overwinter Growth And Survival Of Age-0 Largemouth Bass (Micropterus Salmoides): Revisiting The Role Of Body Size, James E. Garvey, Russell A. Wright, Roy A. Stein Nov 1998

Overwinter Growth And Survival Of Age-0 Largemouth Bass (Micropterus Salmoides): Revisiting The Role Of Body Size, James E. Garvey, Russell A. Wright, Roy A. Stein

Publications

How large size affects overwinter growth and survival of age-0 fish may vary as a function of food, predation, and energetic condition. During two winters in Ohio, we assessed how these factors affected growth and survival of varying sizes of age-0 largemouth bass (Micropterus salmoides) by combining a field survey (N = 2 reservoirs) with multiscale experiments (reservoirs, ponds, outdoor pools). In our survey, more small (< 100 mm total length) individuals died by spring in one reservoir than in the other. Similarly, when we stocked two reservoirs with marked age-0 largemouth bass in fall, mortality of small individuals was higher in one system overwinter, potentially due to differences in predation intensity. In ponds during two winters, size-selective mortality of small largemouth bass occurred in only two of eight ponds, potentially as a function of cannibalism. Varying ration in pools (starved, 0.5× maintenance, or 1.5× maintenance) did not affect survival, even though starved individuals lost substantial wet weight and energy content. Only when predators were present did small individuals die at high rates, although energy depletion may have contributed to predatory mortality. To increase the probability of overwinter survival, managers should seek to improve first-summer growth, reduce winter predation, and increase winter forage.


Competition Between Larval Fishes In Reservoirs: The Role Of Relative Timing Of Appearance, James E. Garvey, Roy A. Stein Nov 1998

Competition Between Larval Fishes In Reservoirs: The Role Of Relative Timing Of Appearance, James E. Garvey, Roy A. Stein

Publications

In small, hypereutrophic reservoirs (<100 ha; >100 mg total phosphorus/L), larval gizzard shad Dorosoma cepedianum and threadfin shad D. petenense (henceforth, shad) reach high densities in the limnetic zone, virtually eliminate zooplankton, and perhaps compromise success of other planktivorous larvae, such as bluegill Lepomis macrochirus. Because relative timing of appearance of shad and bluegills probably influences their relative success, we quantified densities of fish larvae and zooplankton during spring through summer in three reservoirs across 8 years (1987–1994), and we conducted three hatchery experiments with varying larval appearance times and gizzard shad densities in plastic bags (1 m3). …


Detection Of Silver In Metal-Poor Stars, James L. Crawford, Christopher Sneden, Jeremy R. King, Ann M. Boesgaard, Contantine P. Deliyannis Nov 1998

Detection Of Silver In Metal-Poor Stars, James L. Crawford, Christopher Sneden, Jeremy R. King, Ann M. Boesgaard, Contantine P. Deliyannis

Publications

The resonance lines of neutral silver appearing at 3280, 3382 Å in the near-ultraviolet spectral region have been identified on Keck I HIRES spectra of four halo stars with metallicities -1.3 ≥ [Fe/H] ≥ -2.2. This represents the first detection in metal-poor stars of an element in the atomic number range 41 ≤ Z ≤ 55. The mean relative silver abundance is [Ag/Fe] +0.2, with little star-to-star variation. Silver abundance upper limits in three other metal-poor stars are consistent with this mean value. The modest overabundance of silver is similar to the overabundances in this metallicity range exhibited by other …


Scots-Irish In The Carolinas, 1998 October 8, Billy Kennedy Oct 1998

Scots-Irish In The Carolinas, 1998 October 8, Billy Kennedy

Publications

No abstract provided.


Community Property Reimbursement, Roger Bernhardt Oct 1998

Community Property Reimbursement, Roger Bernhardt

Publications

This article discusses how California community property rules intersect with dissolution and bankruptcy claims, dealing with the effect of a couple making the down payment with funds from one of the spouse’s parents.


Ursinus College 1970-1976, A Time For Dispute Over Principles & Priorities: An Interpretation, Richard P. Richter Oct 1998

Ursinus College 1970-1976, A Time For Dispute Over Principles & Priorities: An Interpretation, Richard P. Richter

Publications

No abstract provided.


30 Years At Heshbon, Douglas A. Jones Oct 1998

30 Years At Heshbon, Douglas A. Jones

Publications

In 1968, Andrews professor of archaeology Siegfried Horn selected the Jordanian village of Hesban as the site of the university’s archaeological attention. Focus visits Jordan for the 30th anniversary celebration and takes you on location.


The Economic Situation, 1998 October, Bruce Yandle Oct 1998

The Economic Situation, 1998 October, Bruce Yandle

Publications

Quarterly report on the economic situation of the United States and South Carolina.


An Effective Investment: Teaching Study Skills To Usaf Allied Health Professionals Prior To Extended Training, John C. Griffith Oct 1998

An Effective Investment: Teaching Study Skills To Usaf Allied Health Professionals Prior To Extended Training, John C. Griffith

Publications

When study skills are formally taught to students, it enhances their ability to succeed both academically and in the workplace. The teaching of effective study skills can be accomplished in corporate training environments to enhance employee retention and learning capability.


Wiyn Open Cluster Study. I. Deep Photometry Of Ngc188, Ted Von Hippel, Ata Sarajedini Oct 1998

Wiyn Open Cluster Study. I. Deep Photometry Of Ngc188, Ted Von Hippel, Ata Sarajedini

Publications

We have employed precise and carefully calibrated V - and I - band photometry of NGC 188 at WIYN Observatory to explore the cluster luminosity function (LF) and study the cluster white dwarfs. Our photometry is offset by V = 0.052 (fainter) from that of Sandage and Eggen & Sandage. All published photometry for the past three decades has been based on these two calibrations, which are in error by 0.05 ± 0.01. We employ the Pinsonneault et al. fiducial open cluster main sequence to derive a distance modulus of 11.43 ± 0.08 and E(B - V )=0.09, with …


Does South Carolina Hold The Moral Ground In Lawsuits Against Tobacco Companies?, 1998 October, Clinton H. Whitehurst Jr. Oct 1998

Does South Carolina Hold The Moral Ground In Lawsuits Against Tobacco Companies?, 1998 October, Clinton H. Whitehurst Jr.

Publications

No abstract provided.


Weyl-Type Fields With Geodesic Lines Of Force, Brendan Guilfoyle Sep 1998

Weyl-Type Fields With Geodesic Lines Of Force, Brendan Guilfoyle

Publications

The static electrogravitational equations are studied and it is shown that an aligned type D metric which has a Weyl-type relationship between the gravitational and electric potential has shearfree geodesic lines of force. All such fields are then found and turn out to be the fields of a charged sphere, charged infinite rod and charged infinite plate. A further solution is also found with shearing geodesic lines of force. This new solution can have m > |e| or m < |e|, but cannot be in the Majumdar-Papapetrou class (in which m = |e|). It is algebraically general and has flat equipotential surfaces.


Deterrence Vs. Cooperation And The Evolving Theory Of Environmental Enforcement, Clifford Rechtschaffen Sep 1998

Deterrence Vs. Cooperation And The Evolving Theory Of Environmental Enforcement, Clifford Rechtschaffen

Publications

This Article critically examines the assumptions underlying the reform movement, and concludes that we should ease the rush to dismantle traditional, deterrence-based civil enforcement. While some of the underlying critiques of traditional enforcement have merit, they do not demonstrate that a wholesale shift to a primarily cooperative-oriented approach will improve compliance with environmental law. In fact, a deterrence based system of enforcement contains many attributes that are equally if not more essential to achieving compliance. Rather than discarding the current enforcement approach, we should move to a system of environmental enforcement that is grounded in deterrence theory but integrates the …


The Problem Of Hipparcos Distances To Open Clusters. I. Constraints From Multicolor Main-Sequence Fitting, Marc H. Pinsonneault, John Stauffer, David Soderblom, Jeremy R. King, Robert B. Hanson Sep 1998

The Problem Of Hipparcos Distances To Open Clusters. I. Constraints From Multicolor Main-Sequence Fitting, Marc H. Pinsonneault, John Stauffer, David Soderblom, Jeremy R. King, Robert B. Hanson

Publications

Parallax data from the Hipparcos mission allow the direct distance to open clusters to be compared with the distance inferred from main-sequence (MS) Ðtting. There are surprising differences between the two distance measurements, indicating either the need for changes in the cluster compositions or reddening, underlying problems with the technique of MS Ðtting, or systematic errors in the Hipparcos parallaxes at the 1 mas level. We examine the di†erent possibilities, focusing on MS fitting in both metallicity-sensitive B[V and metallicity-insensitive V [I for five well-studied systems (the Hyades, Pleiades, a Per, Praesepe, and Coma Ber). The Hipparcos distances to the …


The Problem Of Hipparcos Distances To Open Clusters. Ii. Constraints From Nearby Field Stars, David R. Soderblom, Jeremy R. King, Robert B. Hanson, Burton F. Jones, Debra Fischer, John R. Stauffer, Marc H. Pisonneault Sep 1998

The Problem Of Hipparcos Distances To Open Clusters. Ii. Constraints From Nearby Field Stars, David R. Soderblom, Jeremy R. King, Robert B. Hanson, Burton F. Jones, Debra Fischer, John R. Stauffer, Marc H. Pisonneault

Publications

This paper examines the discrepancy between distances to nearby open clusters as determined by parallaxes from Hipparcos compared to traditional main-sequence fitting. The biggest difference is seen for the Pleiades, and our hypothesis is that if the Hipparcos distance to the Pleiades is correct, then similar subluminous zero-age main-sequence (ZAMS) stars should exist elsewhere, including in the immediate solar neighborhood. We examine a color-magnitude diagram of very young and nearby solar-type stars and show that none of them lie below the traditional ZAMS, despite the fact that the Hipparcos Pleiades parallax would place its members 0.3 mag below that ZAMS. …


Nuclear Reactions Governing The Nucleosynthesis Of 44ti, L.-S. The, Donald D. Clayton, L Jin, Bradley S. Meyer Sep 1998

Nuclear Reactions Governing The Nucleosynthesis Of 44ti, L.-S. The, Donald D. Clayton, L Jin, Bradley S. Meyer

Publications

Large excesses of 44Ca in certain presolar graphite and silicon carbide grains give strong evidence for 44Ti production in supernovae. Furthermore, recent detection of the 44Ti c line from the Cas A super-nova remnant by the Compton Gamma Ray Observatory Compton Telescope shows that radioactive 44Ti is produced in supernovae. These make the 44Ti abundance an observable diagnostic of supernovae. Through use of a nuclear reaction network, we have systematically varied reaction rates and groups of reaction rates to experimentally identify those that govern 44Ti abundance in core-collapse supernova nucleosynthesis. We survey the nuclear-rate dependence by repeated calculations of the …


Detection Of Intergalactic Red-Giant-Branch Stars In The Virgo Cluster, Henry C. Ferguson, Ted Von Hippel, Nial R. Tanvir Aug 1998

Detection Of Intergalactic Red-Giant-Branch Stars In The Virgo Cluster, Henry C. Ferguson, Ted Von Hippel, Nial R. Tanvir

Publications

It has been suspected for nearly 50 years that clusters of galaxies contain a population of intergalactic stars, ripped from galaxies during cluster formation or when the galaxies’ orbits take them through the cluster center. Support for the existence of such a population of free-floating stars comes from measurements of the diffuse light in clusters and from recent detections of planetary nebulae with positions and/or velocities far removed from any observed cluster galaxy. 10 , 11 But estimates for the mass of the diffuse population and its distribution relative to the galaxies are still highly uncertain. Here we report the …


Semi-Automated Extraction Of Digital Objective Prism Spectra, Coryn A.L. Bailer-Jones, Ted Von Hippel, Mike Irwin Aug 1998

Semi-Automated Extraction Of Digital Objective Prism Spectra, Coryn A.L. Bailer-Jones, Ted Von Hippel, Mike Irwin

Publications

We describe a method for the extraction of spectra from high dispersion objective prism plates. Our method is a catalogue driven plate solution approach, making use of the Right Ascension and Declination coordinates for the target objects. In contrast to existing methods of photographic plate reduction, we digitize the entire plate and extract spectra off-line. This approach has the advantages that it can be applied to CCD objective prism images, and spectra can be re-extracted (or additional spectra extracted) without having to re-scan the plate. After a brief initial interactive period, the subsequent reduction procedure is completely automatic, resulting in …


What I Did On Sabbatical: Returning After 15 Years To My Old Haunts At The Hall Of Justice, Susan Rutberg Aug 1998

What I Did On Sabbatical: Returning After 15 Years To My Old Haunts At The Hall Of Justice, Susan Rutberg

Publications

No abstract provided.


Evidence For A Galactic Γ-Ray Halo, Dieter H. Hartmann, D. D. Dixon, E. D. Kolaczyk, J. Samimi, R. Diehl, G. Kanbach, H. Mayer-Hasselwander, A. W. Strong Aug 1998

Evidence For A Galactic Γ-Ray Halo, Dieter H. Hartmann, D. D. Dixon, E. D. Kolaczyk, J. Samimi, R. Diehl, G. Kanbach, H. Mayer-Hasselwander, A. W. Strong

Publications

We present quantitative statistical evidence for a γ-ray emission halo surrounding the Galaxy. Maps of the emission are derived. EGRET data were analyzed in a wavelet-based non-parametric hypothesis testing framework, using a model of expected diffuse (Galactic + isotropic) emission as a null hypothesis. The results show a statistically significant large scale halo surrounding the center of the Milky Way as seen from Earth. The halo flux at high latitudes is somewhat smaller than the isotropic γ-ray flux at the same energy, though of the same order (O(10−7–10−6) ph cm−2 s−1 sr−1 above 1 GeV).


Foreclosure Shortfalls, Roger Bernhardt Aug 1998

Foreclosure Shortfalls, Roger Bernhardt

Publications

This article discusses California cases where buyers successfully sued sellers for fraud, but offsets then entitles the sellers to foreclose.