Digital Commons Network^™

Tailoring Harmonic Radiation To Different Applications Using A Genetic Algorithm, L. Roos, M. B. Gaarde, A. L'Huillier

Faculty Publications

We use a genetic algorithm to theoretically optimize several properties of extreme ultraviolet (XUV) radiation, generated as high-order harmonics in xenon and argon. We maximize the harmonic pulse energy, minimize the pulse duration or optimize the temporal coherence by varying at the same time two or three parameters that are easily accessible in experiments, related to the characteristics of the laser beam and the nonlinear medium. For the 15th and 29th harmonics in argon, we find up to 109 photons per pulse, and pulse durations as short as 6 fs generated by a 50 fs laser pulse. We can also …

Spatial Patterns Of Morphological Diversity Across The Indo-Pacific: Analyses Using Strombid Gastropods, Kaustuv Roy, Deborah P. Balch, Michael E. Hellberg

Faculty Publications

Biological diversity can be measured using various metrics, but existing knowledge of spatial patterns of diversity is largely based on species counts. There is increasing evidence that trends in species richness might not match trends in other biodiversity metrics, such as morphological diversity. Here, we use data from a large group of Indo-Pacific gastropods (family Strombidae) to show that the species richness of a region is a poor predictor of the morphological diversity present there. Areas with only a few species can harbour an impressive array of morphologies and, conversely, morphological diversity in the most species-rich regions is no higher …

Redshifts And Luminosities For 112 Gamma-Ray Bursts, Bradley E. Schaefer, Ming Deng, David L. Band

Faculty Publications

Two different luminosity indicators have recently been proposed for gamma-ray bursts that use gamma-ray observations alone. They relate the burst luminosity (L) with the time lag between peaks in hard and soft energies (τlag) and the spikiness or variability of the burst's light curve (V). These relations are currently justified and calibrated with only six or seven bursts with known redshifts. We have examined BATSE data for τlag and V for 112 bursts. (1) A strong correlation between τlag and V exists, and it is exactly as predicted from the two proposed relations. This is proof that both luminosity indicators …

Magnetic Field Effects On Neutron Diffraction In The Antiferromagnetic Phase Of Upt3, Juana Moreno, J. A. Sauls

Faculty Publications

We discuss possible magnetic structures in UPt3 based on our analysis of elastic neutron-scattering experiments in high magnetic fields at temperatures T < TN. The existing experimental data are compatible with a true antiferromagnetic order displaying a single-q antiferromagnetic structure with three independent domains. For modest in-plane spin-orbit interactions, the Zeeman coupling between the antiferromagnetic order parameter and the magnetic field induces a rotation of the magnetic moments, but not an adjustment of the propagation vector of the magnetic order. A triple-q magnetic structure is also consistent with neutron experiments, but in general leads to a nonuniform magnetization in the crystal. New experiments involving higher fields and polarized neutrons could decide between these structures. © 2000 The American Physical Society.

Glycoprotein K Specified By Herpes Simplex Virus Type 1 Is Expressed On Virions As A Golgi Complex-Dependent Glycosylated Species And Functions In Virion Entry, T. P. Foster, G. V. Rybachuk, K. G. Kousoulas

Faculty Publications

To facilitate detection of glycoprotein K (gK) specified by herpes simplex virus, a 12-amino-acid epitope tag was inserted within gK domain III. Recombinant virus gKprotC-DIII, expressing the tagged gK, was isolated. This virus formed wild-type plaques and replicated as efficiently as the wild-type KOS virus in Vero cells. Anti-protein C MAb detected high-mannose and Golgi complex-dependent glycosylated gK within cells as well as on purified virions. The gK-null virus ΔgK (gK-/-) entered Vero cells substantially more slowly than the wild-type KOS (gK+/+), while ΔgK virus grown in complementing VK302 cells (gK-/+) entered with entry kinetics similar to those of the …

Precise Measurement Of Dimuon Production Cross Sections In Νμfe And Ν̄Μfe Deep Inelastic Scattering At The Fermilab Tevatron, M. Goncharov, T. Adams, A. Alton, T. Bolton, J. Goldman, P. Spentzouris, J. Conrad, B. T. Fleming, J. Formaggio, S. Koutsoliotas, J. H. Kim, C. Mcnulty, A. Romosan, M. H. Shaevitz, E. G. Stern, A. Vaitaitis, E. D. Zimmerman, R. A. Johnson, M. Vakili, N. Suwonjandee, R. H. Bernstein, L. Bugel, M. J. Lamm, W. Marsh, P. Nienaber, J. Yu, L. De Barbaro, D. Buchholz, H. Schellman, G. P. Zeller, J. Brau, R. B. Drucker, R. Frey

Faculty Publications

We present measurements of the semi-inclusive cross sections for νμ- and ν̄μ-nucleon deep inelastic scattering interactions with two oppositely charged muons in the final state. These events dominantly arise from the production of a charm quark during the scattering process. The measurement was obtained from the analysis of 5102 νμ-induced and 1458 ν̄μ-induced events collected with the NuTeV detector exposed to a sign-selected beam at the Fermilab Tevatron. We also extract a cross-section measurement from a reanalysis of 5030 νμ-induced and 1060 ν̄μ-induced events collected from the exposure of the same detector to a quad-triplet beam by the Chicago Columbia …

Swst 1: An O-Rich Planetary Nebula Around A C-Rich Central Star, Orsola De Marco, P. A. Crowther, M. J. Barlow, Geoffrey C. Clayton, A. De Koter

Faculty Publications

The hydrogen-deficient [WCL] type central star HD 167362 and its planetary nebula (PN) SwSt 1 are investigated. The central star has a carbon-rich emission-line spectrum, and yet the nebula exhibits a 10-μm emission feature from warm silicate dust, perhaps indicating a recent origin for the carbon-rich stellar spectrum. Its stellar and nebular properties might therefore provide further understanding as to the origin of the [WCL] central star class. The central star optical and UV spectra are modelled with state-of-the art non-LTE codes for expanding atmospheres, from which the stellar parameters are determined. Using the Sobolev approximation code ISA-Wind, we find …

Fashion, Advertising, And Class Delineation: A Study Of Ready-Made Fashion’S Effects On Class Barriers, Sarah Johnston

Honors Theses

No abstract provided.

Evidence For Neutrino Oscillations From The Observation Of Ν̄E Appearance In A Ν̄Μ Beam, A. Aguilar, L. B. Auerbach, R. L. Burman, D. O. Caldwell, E. D. Church, A. K. Cochran, J. B. Donahue, A. Fazely, G. T. Garvey, R. M. Gunasingha, R. Imlay, W. C. Louis, R. Majkic, A. Malik, W. Metcalf, G. B. Mills, V. Sandberg, D. Smith, I. Stancu, M. Sung, R. Tayloe, G. J. Vandalen, W. Vernon, N. Wadia, D. H. White, S. Yellin

Faculty Publications

A search for ν̄μ→ν̄e oscillations was conducted by the Liquid Scintillator Neutrino Detector at the Los Alamos Neutron Science Center using ν̄μ from μ+ decay at rest. A total excess of 87.9±22.4±6.0 events consistent with ν̄ep→e+n scattering was observed above the expected background. This excess corresponds to an oscillation probability of (0.264±0.067±0.045)%, which is consistent with an earlier analysis. In conjunction with other known limits on neutrino oscillations, the LSND data suggest that neutrino oscillations occur in the 0.2-10 eV2/c4 Δm2 range, indicating a neutrino mass greater than 0.4 eV/c2. ©2001 The American Physical Society.

Probing D-Wave Pairing Correlations In The Pseudogap Regime Of The Cuprate Superconductors Via Low-Energy States Near Impurities, Daniel E. Sheehy, A. Adagideli, Paul M. Goldbart, Ali Yazdani

Faculty Publications

The issue of probing the pseudogap regime of the cuprate superconductors, specifically with regard to the existence and nature of superconducting pairing correlations of d-wave symmetry, is explored theoretically. It is shown that if the d-wave correlations believed to describe the superconducting state persist into the pseudogap regime, but with pair-potential phase fluctuations that destroy their long-range nature, then the low-energy quasiparticle states observed near extended impurities in the truly superconducting state should also persist as resonances in the pseudogap regime. The scattering of quasiparticles by these phase-fluctuations broadens what was (in the superconducting state) a sharp peak in the …

Develping Consensus Indicators Of Sustainability For Southeastern United States Aquaculture (Bulletin #879), Rex H. Caffey, Richard F. Kazmierczak, James W. Avault

LSU AgCenter Bulletins

This study investigates whether diverse aquaculture interest groups can collectively agree on ways to coordinate this resource use by developing goals and indicators of aquaculture sustainability. Specifically, this study used aquaculture experts from the production, research, regulatory and public interest sectors to identify and weight a broad range of indicators of aquaculture sustainability in the southeastern United States.

Fusobacteriosis In Captive Wild-Caught Pronghorns (Antilocapra Americana), J. F. Edwards, D. S. Davis, T. J. Roffe, F. Ramiro-Ibañez, P. H. Elzer

Faculty Publications

An outbreak of Fusobacterium necrophorum-induced septicemia occurred in a group of 40 captive wild-caught pronghorns (Antilocapra americana). Primary pododermatitis or necrotic stomatitis progressed to produce fatal septicemia with metastatic lesions in the forestomachs, lung, liver, and cecum in 38 of the animals. Two remaining animals were euthanatized because of chronic pododermatitis. Housing the animals in a pasture previously used by bovids and heavy rains with persistence of ground water pools in the pasture were contributing factors in the pathogenesis of this outbreak.

Unpopular Beliefs: Unionist Minister's History Of Wartime Arkansas Returns To Print, Lawrence Lee Hewitt

Civil War Book Review

Originally published in 1864, William Baxter's first-hand observations in and around Fayetteville, Arkansas, between 1860 and 1863 now have received a second reprinting in Pea Ridge and Prairie Grove. Though he meticulously describes the Confederate troops marching to and from the 1862 battle....

Book Browsing, Morgan Knull

Civil War Book Review

It is not difficult to identify serious readers. In their homes, books will enjoy pride of place. They may plan their travels around visiting used bookstores or making a pilgrimage to a famous writer's residence. And they tend to be more introspective than their neighbors, for readers rightly see th....

Scars Of War: Unexpected Turns And Revelations' Enliven This Tale Of Reconstruction, M. Thomas Inge

Civil War Book Review

Howard Bahr is already well-known to readers as the author of the acclaimed novel The Black Flower, a powerful and elegantly written book that captured the essential detail and wrenching violence of men in battle as have few other works of fiction about the Civil War or any other war. Now he ....

Stitched Memories: Biographical Vignettes, Quilts, And Activities Present Social History, Karen Rae Mehaffey

Civil War Book Review

Quilts have long held a fascination for Americans. Highly symbolic and intricately constructed, their patterns contain historical meaning understood by their creators as well as their modern collectors. Barbara Brackman is a quilter and historian who recognizes the importance of these textiles, part....

Historian Of The Master Class: Scholarly Essays Honor Eugene Genovese's Work And Influence, Lewis P. Simpson

Civil War Book Review

Presented as a tribute to Eugene D. Genovese, the ten substantial and arresting essays in Slavery, Secession, and Southern History are on varying topics in the history of the antebellum South. But either explicitly or implicitly, each testifies to the importance of Genovese's remarkably compr....

The Valuation Effects Of Initiations And Terminations Of Joint Ventures, Tomas Mantecon Prieto

LSU Historical Dissertations and Theses

This dissertation examines the valuation effects of initiations and terminations of joint ventures formed by two partners.

The evidence indicates that there is an increase in value for both partners at joint venture initiations and that these gains are greater for small partners than for the large partners. The pattern of the gains to partners is consistent with the certification value of the inter-corporate relationship intrinsic to a joint venture. Moreover, an analysis of the operating performance after the initiation of joint ventures indicates that there is no significant improvement in operating performance of the partner firms relative to benchmark …

Private Stanley, I Presume?': An Intrepid British Adventurer Soldiered For Both Sides, Alec Hasenson

Civil War Book Review

Many volunteers from the British Isles, whatever their motives, took sides in the American Civil War. One of these was Henry Morton Stanley, who became famous largely as a result of his later adventures in Africa, and the books he wrote about the Dark Continent. He chronicled his wartime experiences....

War In Watercolor: Draftsman's Diaries And Drawings Record Battles, Andersonville, Ben L. Bassham

Civil War Book Review

Among the soldier-artists who created a contemporary pictorial account of the Civil War, Robert Knox Sneden was almost certainly unique. With the publication of Eye of the Storm, an edited version of his illustrated wartime diary, Sneden should now be placed in the front ranks of Civil War a....

Trouble In The Finger Lakes: Lincoln's Colorful Sleuth Abel Jones Investigates Civilian Unrest, Thomas Hill

Civil War Book Review

Shadows of Glory is Owen Parry's second Abel Jones historical suspense novel. The first mystery, Faded Coat of Blue, was set in Washington, D.C., at the very beginning of the conflict. It received very favorable reviews. The present installment takes place mostly in the Finger Lakes re....

Intra- And Inter-Person Variability In Glycemic Responsiveness, Cassandra S. Baldwin

Honors Theses

No abstract provided.

Cultural Aggression: Did Antebellum Northern Elites Dehumanize Southerners?, Ian Crowe

Civil War Book Review

North Over South is a study of the development of nationalist thought in the northern United States in the three decades preceding the Civil War's outbreak. Central to this study is Susan-Mary Grant's argument that "northern nationalism" increasingly monopolized the "search for an American na....

Desperate Courage': Griswoldville's Lopsided Outcome Signaled The Confederacy's End, Albert Castel

Civil War Book Review

Judging by the total number of troops involved (no more than 4,000), the casualties for both sides (fewer than 700), and its strategic significance (none at all), the clash that took place near Griswoldville, Georgia, in November 1864 was not a battle, but merely a minor engagement. Yet Griswoldv....

From Sherman's Army, With Love: Illinois Soldier's Field Letters Address Things Back Home, Larry G. Ligget

Civil War Book Review

Colonel Smith D. Atkins loathed General Gordon Granger and sought to persuade William Rosecrans to attach Atkins's 92nd Illinois Infantry to active duty at the front. Relief came after Colonel John Wilder observed the regiment building a bridge across the Duck River, liked what he saw, and had it as....

Grits And Gristle: Cookbook Honors Southern Heritage Through Recipes, Laurie A. Chambliss

Civil War Book Review

This is a terrific cookbook, and some very nice history as well. The recipes in The Confederate Cookbook are not "authentic" in the sense of being from verified Civil War-era or earlier cookbooks, nor do they claim to be. They originate in the family lore of Sons of Confederate Veterans (S....

The Picture Of Confederate Gray: Album Portrays Leading Confederate Generals In Image And Anecdote, Wilbur E. Meneray

Civil War Book Review

George Cantor twice refers to Pickett's Charge at Gettysburg: once as "one of the great feats of valor in all of American warfare," and later as "a display of courage rarely equaled in the history of warfare." The author himself displays courage in selecting only 16 Confederate generals to highlight....

A Meditation On American Politics': Can Lincoln's Political Ideals Provide Continuity With Our Past?, James D. Hardy

Civil War Book Review

George Anastaplo began his career in an unusual fashion. He was a victim of the Illinois Bar Association's aversion to free expression in a First Amendment case, In re Anastaplo (366 U.S. 82 [1961]). He went on to an exceptionally distinguished academic career of sustained publication in law ....

A Robert E. Lee For Our Time: Biography's Analysis Of General Lee's 'Moral Measurement' Falls Somewhat Short, Steven E. Woodworth

Civil War Book Review

A towering figure in American history - whether depicted in marble or clay - Robert E. Lee continues to draw the attention of historians. The last quarter-century has seen a sustained assault on Lee's legacy and the mythology that was constructed around it to vindicate the Confederate cause. Recent ....

Between The York And The James: Nine Essays Put Peninsula And Seven Days Battles In Context, Kevin Levin

Civil War Book Review

This is the seventh installment in the University of North Carolina Press's Military Campaigns of the Civil War series. Though each volume is intended as a supplement to more traditional narratives, the series has been influential in providing new interpretations by challenging tired assumptions and....