Cartographic Trend Analysis of Furbearer Harvest Distributions in Arkansas

Average by-county fur harvest for the last nine harvest seasons (1977-1985) was used as data points to be interpolated using nearest neighbor algorithms in computer-assisted trend analyses. COMPLOT maps were produced which represented a surface of harvest densities drawn over a map of Arkansas. Twelve furbearer species are examined, and topographic features of harvest density for each are interpreted in terms of ecology and/or buyer distribution. The trend surface technique removed some of the error inherent to harvest records, and produced an aesthetic graphical display of the information that was more easily interpreted and explained than other methods of analysis usually allow

Smooth relativistic Hartree-Fock pseudopotentials for H to Ba and Lu to Hg

We report smooth relativistic Hartree-Fock pseudopotentials (also known as averaged relativistic effective potentials or AREPs) and spin-orbit operators for the atoms H to Ba and Lu to Hg. We remove the unphysical extremely non-local behaviour resulting from the exchange interaction in a controlled manner, and represent the resulting pseudopotentials in an analytic form suitable for use within standard quantum chemistry codes. These pseudopotentials are suitable for use within Hartree-Fock and correlated wave function methods, including diffusion quantum Monte Carlo calculations.Comment: 13 pages, 3 figure

BEVERLY, “MUSIC MISSES YOU”: A BIOGRAPHICAL AND PERFORMANCE GUIDE TO AMERICAN MEZZO-SOPRANO BEVERLY WOLFF’S CAREER AND HER SUBSEQUENT IMPACT ON AMERICAN OPERA AND ART SONG

American mezzo-soprano, Beverly Wolff has not received the credit or respect that she deserves in operatic history. Her career began in 1952 and flourished until her retirement from the stage in 1981. Her intense characterizations, innate musicianship, and intelligence made her one of the most sought-after performers from the 1950s to the 1970s. For thirty years, she worked with some of the operatic world’s finest musicians, including Leonard Bernstein, Gian-Carlo Menotti, Samuel Barber, Ned Rorem, Beverly Sills, Norman Triegle, Placido Domingo, among others. She was represented by Columbia Artists Management Inc (CAMI), one of New York’s oldest and most prestigious management companies, and maintained an active performance schedule that often included operatic, concert, and recital performances in the same week. She trained at the American Vocal Academy in Philadelphia and was inducted into its Hall of Fame. She performed in New York, Boston, Washington, D.C., San Francisco, New Orleans, and Atlanta and was an active member of the New York City Opera, Handel Society, Tanglewood, and the Handel Society of Washington, D.C. Wolff is credited with over sixty recordings. She also appeared on several of NBC’s live operatic programs, which brought opera to the masses. Perhaps most importantly, she created and debuted several important roles in American opera. Few have heard of her; the purpose of this document is to fill in this gap in operatic history, and to clarify and correct misinformation about her. In this document, I will answer the following questions: What determines a performer’s worth? What secures a performer’s place in history? Finally, and more specifically, what imprints did Beverly Wolff leave for posterity

Excitations and benchmark ensemble density functional theory for two electrons

A new method for extracting ensemble Kohn-Sham potentials from accurate excited state densities is applied to a variety of two electron systems, exploring the behavior of exact ensemble density functional theory. The issue of separating the Hartree energy and the choice of degenerate eigenstates is explored. A new approximation, spin eigenstate Hartree-exchange (SEHX), is derived. Exact conditions that are proven include the signs of the correlation energy components, the virial theorem for both exchange and correlation, and the asymptotic behavior of the potential for small weights of the excited states. Many energy components are given as a function of the weights for two electrons in a one-dimensional flat box, in a box with a large barrier to create charge transfer excitations, in a three-dimensional harmonic well (Hooke's atom), and for the He atom singlet-triplet ensemble, singlet-triplet-singlet ensemble, and triplet bi-ensemble.Comment: 15 pages, supplemental material pd

The Fast-Evolving phy-2 Gene Modulates Sexual Development in Response to Light in the Model Fungus Neurospora crassa

Rapid responses to changes in incident light are critical to the guidance of behavior and development in most species. Phytochrome light receptors in particular play key roles in bacterial physiology and plant development, but their functions and regulation are less well understood in fungi. Nevertheless, genome-wide expression measurements provide key information that can guide experiments that reveal how genes respond to environmental signals and clarify their role in development. We performed functional genomic and phenotypic analyses of the two phytochromes in Neurospora crassa, a fungal model adapted to a postfire environment that experiences dramatically variable light conditions. Expression of phy-1 and phy-2 was low in early sexual development and in the case of phy-2 increased in late sexual development. Under light stimulation, strains with the phytochromes deleted exhibited increased expression of sexual development-related genes. Moreover, under red light, the phy-2 knockout strain commenced sexual development early. In the evolution of phytochromes within ascomycetes, at least two duplications have occurred, and the faster-evolving phy-2 gene has frequently been lost. Additionally, the three key cysteine sites that are critical for bacterial and plant phytochrome function are not conserved within fungal phy-2 homologs. Through the action of phytochromes, transitions between asexual and sexual reproduction are modulated by light level and light quality, presumably as an adaptation for fast asexual growth and initiation of sexual reproduction of N. crassa in exposed postfire ecosystems

Enhanced squeezing of a collective spin via control of its qudit subsystems

Unitary control of qudits can improve the collective spin squeezing of an atomic ensemble. Preparing the atoms in a state with large quantum fluctuations in magnetization strengthens the entangling Faraday interaction. The resulting increase in interatomic entanglement can be converted into metrologically useful spin squeezing. Further control can squeeze the internal atomic spin without compromising entanglement, providing an overall multiplicative factor in the collective squeezing. We model the effects of optical pumping and study the tradeoffs between enhanced entanglement and decoherence. For realistic parameters we see improvements of ~10 dB.Comment: 5 pages, 2 figure