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A New Beginning, Colleen H. Fava Dec 2003

A New Beginning, Colleen H. Fava

Civil War Book Review

On behalf of the previous editors, the U.S. Civil War Center, and myself I would like to thank Michael Zibart and the BookPage team for their commitment to this publication over the last few years. It is with regret, for both parties, that our publishing partnership has been dissolved. As most of ....

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Annotations, Cwbr_Editor Dec 2003

Annotations, Cwbr_Editor

Civil War Book Review

No abstract provided.

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Ponderomotive Shearing For Spectral Interferometry Of Extreme-Ultraviolet Pulses, Johan Mauritsson, Rodrigo López-Martens, Anne L'Huillier, Kenneth J. Schafer Dec 2003

Ponderomotive Shearing For Spectral Interferometry Of Extreme-Ultraviolet Pulses, Johan Mauritsson, Rodrigo López-Martens, Anne L'Huillier, Kenneth J. Schafer

Faculty Publications

We propose a novel method for completely characterizing ultrashort pulses at extreme-ultraviolet (XUV) wavelengths by adapting the technique of spectral phase interferometry for direct electric-field reconstruction to this spectral region. Two-electron wave packets are coherently produced by photoionizing atoms with two time-delayed replicas of the XUV pulse. For one of the XUV pulses, photoionization occurs in the presence of a strong infrared pulse that ponderomotively shifts the binding energy, thereby providing the spectral shear needed for reconstruction of the spectral phase of the XUV pulse. © 2003 Optical Society of America.

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Uptake Of Carbon Monoxide And Hydrogen At Environmentally Relevant Concentrations By Mycobacteria, Gary M. King Dec 2003

Uptake Of Carbon Monoxide And Hydrogen At Environmentally Relevant Concentrations By Mycobacteria, Gary M. King

Faculty Publications

Liquid culture assays revealed a previously unreported capacity for Mycobacterium bovis BCG, M. gordonae, and M. marinum to oxidize CO and for M. smegmatis to consume molecular hydrogen. M. bovis BCG, M. gordonae, M. smegmatis, and M. tuberculosis H37Ra oxidized CO at environmentally relevant concentrations (<50 >ppm); H2 oxidation by M. gordonae and M. smegmatis also occurred at environmentally relevant concentrations (< 10 ppm). CO was not consumed by M. avium or M. microti, although the latter appeared to possess CO dehydrogenase (CODH) genes based on PCR results with primers designed for the CODH large subunit, coxL. M. smegmatis and M. gordonae oxidized CO under suboxic (10 and 1% atmospheric oxygen) and anoxic conditions in the presence of nitrate; no oxidation occurred under anoxic conditions without nitrate. Similar results were obtained for H2 oxidation by M. smegmatis. Phylogenetic analyses of coxL PCR products indicated that mycobacterial sequences form a subclade distinct from that of other bacterial coxL, with limited differentiation among fast- and slow-growing strains.

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Differential Recursion Relations For Laguerre Functions On Hermitian Matrices, Mark Davidson, Gestur Ólafsson Dec 2003

Differential Recursion Relations For Laguerre Functions On Hermitian Matrices, Mark Davidson, Gestur Ólafsson

Faculty Publications

In our previous papers we studied Laguerre functions and polynomials on symmetric cones Ω= H/L. The Laguerre functions ℓnv, n ∈, form an orthogonal basis in L2(Ω, dμv)L and are related via the Laplace transform to an orthogonal set in the representation space of a highest weight representations (πv, Hv) of the automorphism group G corresponding to a tube domain T(Ω). In this article, we consider the case where Ω is the space of positive definite Hermitian matrices and G = SU(n, n). We describe the Lie algebraic realization of πv acting in L 2(Ω, dμv) and use that to …

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Regularization Of Integral Equations In Spaces Of Distributions, Ricardo Estrada Dec 2003

Regularization Of Integral Equations In Spaces Of Distributions, Ricardo Estrada

Faculty Publications

In this article the notion of multiplicative regularizator, a smooth function that by multiplication allows the extension of operators in spaces of distributions, is introduced, and several of the properties are obtained. Applications to Hilbert transforms, Carleman operators, fractional integration operators and generalized Abel operators are given. © 2003 Rocky Mountain Mathematics Consortium.

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Design-Dependent Loads In Topology Optimization, Blaise Bourdin, Antonin Chambolle Dec 2003

Design-Dependent Loads In Topology Optimization, Blaise Bourdin, Antonin Chambolle

Faculty Publications

We present, analyze, and implement a new method for the design of the stiffest structure subject to a pressure load or a given field of internal forces. Our structure is represented as a subset S of a reference domain, and the complement of S is made of two other "phases", the "vold" and a fictitious "liquid" that exerts a pressure force on its interface with the solid structure. The problem we consider is to minimize the compliance of the structure S, which is the total work of the pressure and internal forces at the equilibrium displacement. In order to prevent …

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Literature In Context, David Madden Dec 2003

Literature In Context, David Madden

Civil War Book Review

This novel, sesquicentennial edition of Harriet Beecher Stowe's world classic novel Uncle Tom's Cabin is Charles Johnson's book. His brief but forceful and provocative introduction will overwhelm whatever the reader experiences in the Johnson has written four novels, one of which, Middle P....

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Military Education: Republican Virtues And Civic Responsibility, Benjamin Price Dec 2003

Military Education: Republican Virtues And Civic Responsibility, Benjamin Price

Civil War Book Review

In this monograph, Rod Andrew Jr. studies the development of southern military academies and land grant universities with military-training components. Outgrowths of the antebellum and postbellum periods, V.M.I., The Citadel, Texas A&M, Clemson and other such schools sought to instill discipline in ....

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A Meditation: Essays Question The Meaning Of War, Randal Allred Dec 2003

A Meditation: Essays Question The Meaning Of War, Randal Allred

Civil War Book Review

Few of the writers have done so well at asking the truly hard questions about the Civil War as has Kent Gramm, whose compelling Somebody's Darling: Essays on the Civil War approaches the masterful achievement of Robert Penn Warren's The Legacy Civil War as a meditation on what the War ....

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Decoherence At Zero Temperature, G. W. Ford, R. F. O'Connell Dec 2003

Decoherence At Zero Temperature, G. W. Ford, R. F. O'Connell

Faculty Publications

Most discussions of decoherence in the literature consider the high temperature regime but it is also known that, in the presence of dissipation, decoherence can occur even at zero temperature. Whereas most previous investigations all assumed initial decoupling of the quantum system and bath, we consider that the system and environment are entangled at all times. Here, we discuss decoherence for a free particle in an initial Schrödinger cat state. Memory effects are incorporated by use of the single relaxation time model.

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Cwbr Author Interview: Compelling Images Enhance Narrative Histories: Interview With William C. Davis, Colleen H. Fava, Leah Wood Jewett Dec 2003

Cwbr Author Interview: Compelling Images Enhance Narrative Histories: Interview With William C. Davis, Colleen H. Fava, Leah Wood Jewett

Civil War Book Review

William C. Davis is the author or editor of more than 40 books on the Civil War and Southern history, as well as numerous documentary screenplays. He has served as historical consultant on various television and film productions. Davis has twice been nominated for the Pulitzer Prize in history and is currently professor of history at the Virginia Polytechnic Institute and State University. His most recent book, The Civil War in Photographs (Carlton 2002), served as the platform for this interview...

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Local-Field Factors In A Polarized Two-Dimensional Electron Gas, Juana Moreno, C. Marinescu Nov 2003

Local-Field Factors In A Polarized Two-Dimensional Electron Gas, Juana Moreno, C. Marinescu

Faculty Publications

We derive approximate expressions for the static local-field factors of a spin-polarized two-dimensional electron gas that smoothly interpolate between their small- and large-wave-vector asymptotic limits. The proposed analytical expressions reproduce recent diffusion Monte Carlo data for the unpolarized and fully polarized electron gas. We find that the degree of spin polarization produces important modifications to the local factors of the minority spins, while the local-field functions of the majority spins are less affected. © 2003 The American Physical Society.

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Rates Of Species Loss From Amazonian Forest Fragments, Gonçalo Ferraz, Gareth J. Russell, Philip C. Stouffer, Richard O. Bierregaard, Stuart L. Pimm, Thomas E. Lovejoy Nov 2003

Rates Of Species Loss From Amazonian Forest Fragments, Gonçalo Ferraz, Gareth J. Russell, Philip C. Stouffer, Richard O. Bierregaard, Stuart L. Pimm, Thomas E. Lovejoy

Faculty Publications

In the face of worldwide habitat fragmentation, managers need to devise a time frame for action. We ask how fast do understory bird species disappear from experimentally isolated plots in the Biological Dynamics of Forest Fragments Project, central Amazon, Brazil. Our data consist of mist-net records obtained over a period of 13 years in 11 sites of 1, 10, and 100 hectares. The numbers of captures per species per unit time, analyzed under different simplifying assumptions, reveal a set of species-loss curves. From those declining numbers, we derive a scaling rule for the time it takes to lose half the …

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All Linear Optical Quantum Memory Based On Quantum Error Correction, Robert M. Gingrich, Pieter Kok, Hwang Lee, Farrokh Vatan, Jonathan P. Dowling Nov 2003

All Linear Optical Quantum Memory Based On Quantum Error Correction, Robert M. Gingrich, Pieter Kok, Hwang Lee, Farrokh Vatan, Jonathan P. Dowling

Faculty Publications

An error-correction scheme that encodes an unknown two-photon state into four photons, up to one of which can be lost in the transmission is presented. Such a device acts as a simple repeater or quantum transponder when it is placed in series, and it acts as an optical quantum memory when it is inserted in an optical loop. Using this scheme, the conversion between flying qubits and stationary qubits in memory is not necessary, as the memory and quantum logic gates are composed fo the same optical resources.

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A New General Purpose Event Horizon Finder For 3d Numerical Spacetimes, Peter Diener Nov 2003

A New General Purpose Event Horizon Finder For 3d Numerical Spacetimes, Peter Diener

Faculty Publications

I present a new general purpose event horizon finder for full 3D numerical spacetimes. It works by evolving a complete null surface backwards in time. The null surface is described as the zero-level set of a scalar function, which in principle is defined everywhere. This description of the surface allows the surface, trivially, to change topology, making this event horizon finder able to handle numerical spacetimes where two (or more) black holes merge into a single final black hole.

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Novel Finite-Differencing Techniques For Numerical Relativity: Application To Black-Hole Excision, Gioel Calabrese, Luis Lehner, David Neilsen, Jorge Pullin, Oscar Reula, Olivier Sarbach, Manuel Tiglio Nov 2003

Novel Finite-Differencing Techniques For Numerical Relativity: Application To Black-Hole Excision, Gioel Calabrese, Luis Lehner, David Neilsen, Jorge Pullin, Oscar Reula, Olivier Sarbach, Manuel Tiglio

Faculty Publications

We use rigorous techniques from numerical analysis of hyperbolic equations in bounded domains to construct stable finite-difference schemes for numerical relativity, in particular for their use in black-hole excision. As an application, we present 3D simulations of a scalar field propagating in a Schwarzschild black-hole background.

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Small Magellanic Cloud-Type Interstellar Dust In The Milky Way, Lynne A. Valencic, Geoffrey C. Clayton, Karl D. Gordon, Tracy L. Smith Nov 2003

Small Magellanic Cloud-Type Interstellar Dust In The Milky Way, Lynne A. Valencic, Geoffrey C. Clayton, Karl D. Gordon, Tracy L. Smith

Faculty Publications

It is well known that the sight line toward HD 204827 in the cluster Trumpler 37 shows a UV extinction curve that does not follow the average Galactic extinction relation. However, when a dust component, fore-ground to the cluster, is removed, the residual extinction curve is identical to that found in the SMC within the uncertainties. The curve is very steep and has little or no 2175 A bump. The position of HD 204827 in the sky is projected onto the edge of the Cepheus IRAS bubble. In addition, HD 204827 has an IRAS bow shock, indicating that it may …

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New Constraints On Ωm, Ωλ And W From An Independent Set Of 11 High-Redshift Supernovae Observed With The Hubble Space Telescope, R. A. Knop, G. Aldering, R. Amanullah, P. Astier, G. Blanc, M. S. Burns, A. Conley, S. E. Deustua, M. Doi, R. Ellis, S. Fabbro, G. Folatelli, A. S. Fruchter, G. Garavini, S. Garmond, K. Garton, R. Gibbons, G. Goldhaber, A. Goobar, D. E. Groom, D. Hardin, I. Hook, D. A. Howell, A. G. Kim, B. C. Lee, C. Lidman, J. Mendez, S. Nobili, P. E. Nugent, R. Pain, N. Panagia, C. R. Pennypacker, S. Perlmutter Nov 2003

New Constraints On Ωm, Ωλ And W From An Independent Set Of 11 High-Redshift Supernovae Observed With The Hubble Space Telescope, R. A. Knop, G. Aldering, R. Amanullah, P. Astier, G. Blanc, M. S. Burns, A. Conley, S. E. Deustua, M. Doi, R. Ellis, S. Fabbro, G. Folatelli, A. S. Fruchter, G. Garavini, S. Garmond, K. Garton, R. Gibbons, G. Goldhaber, A. Goobar, D. E. Groom, D. Hardin, I. Hook, D. A. Howell, A. G. Kim, B. C. Lee, C. Lidman, J. Mendez, S. Nobili, P. E. Nugent, R. Pain, N. Panagia, C. R. Pennypacker, S. Perlmutter

Faculty Publications

We report measurements of ΩM, ΩΛ nd w from 11 supernovae (SNe) at z = 0.36-0.86 with high-quality light curves measured using WFPC2 on the Hubble Space Telescope (HST). This is an independent set of high-redshift SNe that confirms previous SN evidence for an accelerating universe. The high-quality light curves available from photometry on WFPC2 make it possible for these 11 SNe alone to provide measurements of the cosmological parameters comparable in statistical weight to the previous results. Combined with earlier Supernova Cosmology Project data, the new SNe yield a measurement of the mass density ΩM = 0.25 -0.06+0.07 (statistical) …

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Faculty Senate Resolution 04-01, Louisiana State University And Agricultural & Mechanical College Nov 2003

Faculty Senate Resolution 04-01, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Faculty Senate Resolution on adding an undergraduate student to the Faculty Senate general election committee, adopted on November 7, 2003.

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Faculty Senate Resolution 04-03, Louisiana State University And Agricultural & Mechanical College Nov 2003

Faculty Senate Resolution 04-03, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Faculty Senate Resolution regarding a constitutional amendment on faculty governance, adopted on November 7, 2003.

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High Throughput Virus-Induced Gene Silencing Implicates Heat Shock Protein 90 In Plant Disease Resistance, Rui Lu, Isabelle Malcuit, Peter Moffett, Maria T. Ruiz, Jack Peart, Ai Jiuan Wu, John P. Rathjen, Abdelhafid Bendahmane, Louise Day, David C. Baulcombe Nov 2003

High Throughput Virus-Induced Gene Silencing Implicates Heat Shock Protein 90 In Plant Disease Resistance, Rui Lu, Isabelle Malcuit, Peter Moffett, Maria T. Ruiz, Jack Peart, Ai Jiuan Wu, John P. Rathjen, Abdelhafid Bendahmane, Louise Day, David C. Baulcombe

Faculty Publications

Virus-induced gene silencing was used to assess the function of random Nicotiana benthamiana cDNAs in disease resistance. Out of 4992 cDNAs tested from a normalized library, there were 79 that suppressed a hypersensitive response (HR) associated with Pto-mediated resistance against Pseudomonas syringae. However, only six of these clones blocked the Pto-mediated suppression of P. syringae growth. The three clones giving the strongest loss of Pto resistance had inserts corresponding to HSP90 and also caused loss of Rx-mediated resistance against potato virus X and N-mediated tobacco mosaic virus resistance. The role of HSP90 as a cofactor of disease resistance is associated …

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Methods For Estimating Long-Distance Dispersal, Ran Nathan, Gad Perry, James T. Cronin, Allan E. Strand, Michael L. Cain Nov 2003

Methods For Estimating Long-Distance Dispersal, Ran Nathan, Gad Perry, James T. Cronin, Allan E. Strand, Michael L. Cain

Faculty Publications

Long-distance dispersal (LDD) includes events in which propagules arrive, but do not necessarily establish, at a site far removed from their origin. Although important in a variety of ecological contexts, the system-specific nature of LDD makes "far removed" difficult to quantify, partly, but not exclusively, because of inherent uncertainty typically involved with the highly stochastic LDD processes. We critically review the main methods employed in studies of dispersal, in order to facilitate the evaluation of their pertinence to specific aspects of LDD research. Using a novel classification framework, we identify six main methodological groups: biogeographical; Eulerian and Lagrangian movement/redistributional; short-term …

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Identification Of Three Genomic Haplotypes 5′ To The Human Cd1d Gene And Their Distribution In Four Ethnic Groups, Q. Y. Chen, N. Jackson, A. Vargas, S. Chalew, J. Rao, M. Batzer, M. S. Lan, Y. H. Chang, M. Mokhashi, D. Liu Nov 2003

Identification Of Three Genomic Haplotypes 5′ To The Human Cd1d Gene And Their Distribution In Four Ethnic Groups, Q. Y. Chen, N. Jackson, A. Vargas, S. Chalew, J. Rao, M. Batzer, M. S. Lan, Y. H. Chang, M. Mokhashi, D. Liu

Faculty Publications

CD1d presents lipid antigen to a conserved population of natural killer (NK) T cells, which participate in host immune defense, tumor cell rejection and suppression of autoimmunity. The levels of human CD1d expression vary significantly between individuals. To understand such variation, we sequenced the region up to 1.7 kb 5′ upstream of the translation start site and partially through exon 2 in 44 white Americans. We also studied two tagged single nucleotide polymorphisms (SNP) in 112 white Americans, 60 African-Americans, 88 Europeans, and 84 Chinese people from the region. Six SNP present in the region (-836C→T, -773C→T, -764C→G, -713A→T, -365A→G …

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Heralded Two-Photon Entanglement From Probabilistic Quantum Logic Operations On Multiple Parametric Down-Conversion Sources, Todd B. Pittman, Michelle M. Donegan, Michael J. Fitch, Bryan C. Jacobs, James D. Franson, Pieter Kok, Hwang Lee, Jonathan P. Dowling Nov 2003

Heralded Two-Photon Entanglement From Probabilistic Quantum Logic Operations On Multiple Parametric Down-Conversion Sources, Todd B. Pittman, Michelle M. Donegan, Michael J. Fitch, Bryan C. Jacobs, James D. Franson, Pieter Kok, Hwang Lee, Jonathan P. Dowling

Faculty Publications

An ideal controlled-NOT gate followed by projective measurements can be used to identify specific Bell states of its two input qubits. When the input qubits are each members of independent Bell states, these projective measurements can be used to swap the post-selected entanglement onto the remaining two qubits. Here we apply this strategy to produce heralded two-photon polarization entanglement using Bell states that originate from independent parametric down-conversion sources, and a particular probabilistic controlled-NOT gate that is constructed from linear optical elements. The resulting implementation is closely related to an earlier proposal by Sliwa and Banaszek, and can be intuitively …

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An Analysis Of Single Clutch Paternity In The Burrower Bug Sehirus Cinctus Using Microsatellites, Jeremy M. Brown, Aneil F. Agrawal, Edmund D. Brodie Nov 2003

An Analysis Of Single Clutch Paternity In The Burrower Bug Sehirus Cinctus Using Microsatellites, Jeremy M. Brown, Aneil F. Agrawal, Edmund D. Brodie

Faculty Publications

Recent studies of the burrower bug, Sehirus cinctus, have examined the genetic basis of parental care. An understanding of the burrower bug mating system, and the subsequent pattern of offspring relatedness that this system generates, is critical to further interpret genetic data. To this end, we developed three consistently amplifiable highly polymorphic microsatellite loci and used them to determine genotypic patterns at the level of both the population and the single clutch. We found that all clutches were sired by single males. Further, we find no evidence for inbreeding. We hypothesize that single paternity within a clutch may play an …

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On The Minor-Minimal 3-Connected Matroids Having A Fixed Minor, Manoel Lemos, James Oxley Nov 2003

On The Minor-Minimal 3-Connected Matroids Having A Fixed Minor, Manoel Lemos, James Oxley

Faculty Publications

Let N be a minor of a 3-connected matroid M such that no proper 3-connected minor of M has N as a minor. This paper proves a bound on E(M)-E(N) that is sharp when N is connected. © 2003 Elsevier Ltd. All rights reserved.

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Pelvic Sexual Dimorphism In A Metatherian, Didelphis Virginiana: Implications For Eutherians, Robert G. Tague Nov 2003

Pelvic Sexual Dimorphism In A Metatherian, Didelphis Virginiana: Implications For Eutherians, Robert G. Tague

Faculty Publications

Eutherians give birth to relatively large infants. Females have larger pelves than males, though males typically have larger nonpelvic bones. Pelvic dimorphism is an adaptation for parturition. Metatherian females, who give birth to markedly small infants, should not show pelvic adaptations for parturition and should have smaller pelves than males. Adult females and males of the Virginia opossum, Didelphis virginiana, are compared. Males are significantly larger than females in absolute size for 14 of 16 pelvic and 8 nonpelvic measures. Sexes did not differ significantly for lower iliac length and posterior space of midplane. However, relative lengths for females are …

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Measuring Constituency Ideology In U.S. House Districts: A Top-Down Simulation Approach, Phillip J. Ardoin, James C. Garand Nov 2003

Measuring Constituency Ideology In U.S. House Districts: A Top-Down Simulation Approach, Phillip J. Ardoin, James C. Garand

Faculty Publications

One of the most intractable problems associated with studying representation in the U.S. House of Representatives involves the measurement of district-level constituency opinion. In measuring constituency opinion in House districts, scholars have relied on a number of alternative approaches, including the use of demographic variables, small-sample estimates of public opinion, presidential election results, referenda data, and "bottom-up" simulated opinion. In this article we develop an innovative "top-down" simulation of House district opinion that provides more reliable and valid measures of House district ideology. We model state-level ideology (as measured by Erikson, Wright, and McIver 1993) as a function of various …

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Similar Gene Structure Of Two Sox9a Genes And Their Expression Patterns During Gonadal Differentiation In A Teleost Fish, Rice Field Eel (Monopterus Albus), Rongjia Zhou, Li Liu, Yiqing Guo, Hongshi Yu, Hanhua Cheng, Xiao Huang, Terrence R. Tiersch, Philippe Berta Nov 2003

Similar Gene Structure Of Two Sox9a Genes And Their Expression Patterns During Gonadal Differentiation In A Teleost Fish, Rice Field Eel (Monopterus Albus), Rongjia Zhou, Li Liu, Yiqing Guo, Hongshi Yu, Hanhua Cheng, Xiao Huang, Terrence R. Tiersch, Philippe Berta

Faculty Publications

The Sox9 gene encodes a transcription factor that is critical for testis determination and chondrogenesis in vertebrates. Mutations in human SOX9 cause campomelic dysplasia, a dominant skeletal dysmorphology syndrome often associated with male to female sex reversal. Here we show that the Sox9a gene was duplicated during evolution of the rice field eel, Monopterus albus, a freshwater fish which undergoes natural sex reversal from female to male during its life, and has a haploid genome size (0.6-0.8 pg) that is among the smallest of the vertebrates. The duplicated copies of the gene (named Sox9a1 and Sox9a2) fit within the Sox9 …

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