Digital Commons Network^™

Phytochrome Evolution In Green And Nongreen Plants, Sarah Mathews

Faculty Publications

Photoreceptors are critical molecules that function at the interface between organism and environment. Plants use specific light signals to determine their place in time and space, allowing them to synchronize their growth, metabolism, and development to the environments in which they occur. Thus, innovation in light sensing mechanisms is expected to coincide with adaptation and diversification. Three studies involving the well-characterized phytochrome photoreceptor system in plants indicate that much work is yet needed to test this expectation. In early diverging dowering plants, episodic positive selection influenced the evolution of phytochrome A, but little of the functional data needed to link …

A Pattern Of Press Self-Criticism In The First Half Of The Twentieth Century, Rebecca Ann Markway

Honors Capstones

No abstract provided.

Viral Marketing: What It Is And Where It Is Going, Laura Ashley Aucion

Honors Capstones

No abstract provided.

S05rs Sgr No. 8 (Dc), Senate

Student Senate Enrolled Legislation

A RESOLUTION

TO EXPRESS SINCERE AND HEARTFELT CONDOLENCES UPON THE UNTIMELY DEATH OF DUSTIN “DC” CLEMONS A NATIVE OF LEESVILLE, LOUISIANA, AND A STUDENT OF LOUISIANA STATE UNIVERSITY

Differential Dna Binding And Protection By Dimeric And Dodecameric Forms Of The Ferritin Homolog Dps From Deinococcus Radiodurans, Anne Grove, Steven P. Wilkinson

Faculty Publications

Bacterial iron storage proteins such as ferritin serve as intracellular iron reserves. Members of the DNA protection during starvation (Dps) family of proteins are structurally related to ferritins, and their function is to protect the genome from iron-induced free radical damage. Some members of the Dps family bind DNA and are thought to do so only as fully assembled dodecamers. We present the cloning and characterization of a Dps homolog encoded by the radiation-resistant eubacterium Deinococcus radiodurans and show that DNA binding does not require its assembly into a dodecamer. D. radiodurans Dps-1, the product of gene DR2263, adopts a …

Extremal Entanglement For Triqubit Pure States, Feng Pan, Dan Liu, Guoying Lu, J. P. Draayer

Faculty Publications

A complete analysis of entangled triqubit pure states is carried out based on a new simple entanglement measure. An analysis of all possible extremally entangled pure triqubit states with up to eight terms is shown to reduce, with the help of SLOCC transformations, to three distinct types. The analysis presented are most helpful for finding different entanglement types in multipartite pure state systems. © 2005 Published by Elsevier B.V.

Single Photons On Demand From 3d Photonic Band-Gap Structures, Marian Florescu, S. Scheel, H. Häffner, H. Lee, D. Strekalov, P. L. Knight, J. P. Dowling

Faculty Publications

We describe a practical implementation of a (semi-deterministic) photon gun based on stimulated Raman adiabatic passage pumping and the strong enhancement of the photonic density of states in a photonic band-gap material. We show that this device allows deterministic and unidirectional production of single photons with a high repetition rate of the order of 100 kHz. We also discuss specific 3D photonic micro-structure architectures in which our model can be realized and the feasibility of implementing such a device using Er3+ ions that produce single photons at the telecommunication wavelength of 1.55 μm. © EDP Sciences.

Consistent And Mimetic Discretizations In General Relativity, Cayetano Di Bartolo, Rodolfo Gambini, Jorge Pullin

Faculty Publications

A discretization of a continuum theory with constraints or conserved quantities is called mimetic if it mirrors the conserved laws or constraints of the continuum theory at the discrete level. Such discretizations have been found useful in continuum mechanics and in electromagnetism. We have recently introduced a new technique for discretizing constrained theories. The technique yields discretizations that are consistent, in the sense that the constraints and evolution equations can be solved simultaneously, but it cannot be considered mimetic since it achieves consistency by determining the Lagrange multipliers. In this paper we would like to show that when applied to …

Peacekeeping On The Plains: Army Operations In Bleeding Kansas, Kristen Tegtmeier Oertel

Civil War Book Review

Policing the peace

Armed diplomacy delayed bloodshed

New Bounds For Randomized Busing, Steven S. Seiden, Peter P. Chen, R. F. Lax, J. Chen, Guoli Ding

Faculty Publications

We consider anonymous secure communication, where parties not only wish to conceal their communications from outside observers, but also wish to conceal the very fact that they are communicating. We consider the bus framework introduced by Beimel and Dolev (J. Cryptology 16 (2003) 25), where messages are delivered by a bus traveling on a random walk. We generalize this idea to consider more than one bus. We show that if w buses are allowed, then the expected delivery time for a message can be decreased from Θ(n) to Θ(n/w) in the case of a complete graph. Additionally, we introduce a …

Faculty Senate Resolution 05-01, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Faculty Senate Resolution on a proposed new PS-36, adopted on February 17, 2005.

Faculty Senate Resolution 05-07, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Faculty Senate Resolution concerning communications facilities on the LSU campus, referred to the Communications and Development Committee on February 17, 2005.

Resonant Transmission Near Nonrobust Periodic Slab Modes, Stephen P. Shipman, Stephanos Venakides

Faculty Publications

We present a precise theoretical explanation and prediction of certain resonant peaks and dips in the electromagnetic transmission coefficient of periodically structured slabs in the presence of nonrobust guided slab modes. We also derive the leading asymptotic behavior of the related phenomenon of resonant enhancement near the guided mode. The theory applies to structures in which losses are negligible and to very general geometries of the unit cell. It is based on boundary-integral representations of the electromagnetic fields. These depend on the frequency and on the Bloch wave vector and provide a complex-analytic connection in these parameters between generalized scattering …

Compositions Of Theta Correspondences, Hongyu He

Faculty Publications

Theta correspondence θ over ℝ is established by Howe (J. Amer. Math. Soc. 2 (1989) 535). In He (J. Funct. Anal. 199 (2003) 92), we prove that θ preserves unitarity under certain restrictions, generalizing the result of Li (Invent. Math. 97 (1989) 237). The goal of this paper is to elucidate the idea of constructing unitary representation through the propagation of theta correspondences. We show that under a natural condition on the sizes of the related dual pairs which can be predicted by the orbit method (J. Algebra 190 (1997) 518; Representation Theory of Lie Groups, Park City, 1998, pp. …

Faculty Senate Resolution 05-02, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Faculty Senate Resolution regarding amendments to Article IX of the Senate bylaws, adopted on January 24, 2005.

Central Invariants And Frobenius - Schur Indicators For Semisimple Quasi-Hopf Algebras, Geoffrey Mason, Siu Hung Ng

Faculty Publications

In this paper, we obtain a canonical central element νH for each semi-simple quasi-Hopf algebra H over any field k and prove that νH is invariant under gauge transformations. We show that if k is algebraically closed of characteristic zero then for any irreducible representation of H which affords the character χ, χ(νH) takes only the values 0, 1 or -1, moreover if H is a Hopf algebra or a twisted quantum double of a finite group then χ(νH) is the corresponding Frobenius-Schur indicator. We also prove an analog of a theorem of Larson-Radford for split semi-simple quasi-Hopf algebras over …

Studying Multiprotein Complexes By Multisignal Sedimentation Velocity Analytical Ultracentrifugation, Andrea Balbo, Kenneth H. Minor, Carlos A. Velikovsky, Roy A. Mariuzza, Cynthia B. Peterson, Peter Schuck

Faculty Publications

Protein interactions can promote the reversible assembly of multiprotein complexes, which have been identified as critical elements in many regulatory processes in cells. The biophysical characterization of assembly products, their number and stoichiometry, and the dynamics of their interactions in solution can be very difficult. A classical first-principle approach for the study of purified proteins and their interactions is sedimentation velocity analytical ultracentrifugation. This approach allows one to distinguish different protein complexes based on their migration in the centrifugal field without isolating reversibly formed complexes from the individual components. An important existing limitation for systems with multiple components and assembly …

Ernst Mayr And The Complexity Of Life, Dominique G. Homberger

Faculty Publications

No abstract provided.

Blaut's Early Natural/Social Theorization, Cultural Ecology, And Political Ecology, Andrew Sluyter

Faculty Publications

No abstract provided.

Future Of Avian Genetic Resources Collections: Archives Of Evolutionary And Environmental History, Scott V. Edwards, Sharon Birks, Robb T. Brumfield, Robert Hanner

Faculty Publications

No abstract provided.

Another Test Of The News: How The Early American Press Reported The French Revolution, Jacquelyn Cole

Honors Capstones

No abstract provided.

Louisiana Survey 2005, Lsu Reilly Center For Media & Public Affairs

Reilly Center Louisiana Surveys

Prior to the hurricanes in the second half of 2005, the 2005 Louisiana Survey revealed a slight uptick in residents who expressed the opinion that the state was heading in the right direction. In addition to this finding, the Survey also examined:

• a rise in economic confidence among residents
• grades for various areas of state government services
• property taxes, homestead exemption, and the Stelly Plan
• perceptions of waste in state government
• economic development and Louisiana's image
• healthcare and economic development incentives
• perceptions of corruption

Guidelines For Managing Winter Vegetation In Northeast Louisiana (Research Information Sheet #105), Bill Williams, Donnie Miller, Steve Kelly, Roy Vidrine, Roger Leonard, Jim Griffin, Dearl Sanders, Eric Webster, Reed Lencse, Eddie Millhollon, Ron Strahan, Dan Reynolds, Steve Crawford, David Jordan

LSU AgCenter Research Information Sheets

Winter vegetation common to northeast Louisiana ranges from easy-to-control weeds, such as annual bluegrass and common chickweed, to difficult-to-control species, such as curly dock and ryegrass. This publication includes information on proper weed identification and herbicide selection, the keys to a successful preplant, burndown weed control program.

Formosan Subterranean Termite (Isoptera: Rhinotermitidae) Soldiers Regulate Juvenile Hormone Levels And Caste Differentiation In Workers, Lixin Mao, Gregg Henderson, Yuxiu Liu, Roger A. Laine

Faculty Publications

A caste structure is maintained in termite societies and juvenile hormone (JH) is generally regarded as the most important regulator in these termite colonies. Here, we demonstrate that the soldier caste regulates JH in workers of Coptotermes formosanus Shiraki. Worker termites (80-100 individuals) were placed in petri dishes with 0, 5, 10, or 20% soldiers. JH III titers of groups of these workers were monitored at 14, 28, 42, and 56 d. Any changes in soldier caste proportions also were noted at each sample date. On the first sample date, the JH levels in workers were similar among treatments with …

Components, Volume 1 (2005), Lsu Center For Computation & Technology

Components

No abstract provided.

Reduced Susceptibility To Tebufenozide In Populations Of The Sugarcane Borer (Lepidoptera: Crambidae) In Louisiana, F. P.F. Reay-Jones, W. Akbar, C. D. Mcallister, T. E. Reagan, J. A. Ottea

Faculty Publications

Susceptibility of the sugarcane borer, Diatraea saccharalis (F.), to tebufenozide was measured using a feeding bioassay, and values obtained were compared with baselines generated before the use of this insecticide in Louisiana sugarcane, Saccharum spp. Results from our study suggest that susceptibility to tebufenozide is decreasing in field-collected sugarcane borers. Inflections in the log dosage-probit lines were detected for many of the field collections, indicating increased heterogeneity within these populations in response to tebufenozide. Where appropriate, probit transformation was used to estimate susceptibility, and significant differences (1.6-2.7-fold) were measured in LC50 values between some field-collected cohorts and the previously measured …

Human Resource Management In Today's Academic Library: Meeting Challenges And Creating Opportunities., Kelly D. Blessinger

Faculty Publications

This book is highly recommended for those with an interest in human resource management in libraries. Although the book focuses on academic libraries, the insights provided could be useful to all types of libraries. The varying nature of the chapters in this book would be beneficial for those in administrative and human resource positions, for students learning about the profession, and for those working within the profession. A quote by Sheila Creth in chapter 10 provides the best summary of this book: “The greatest opportunity for success in any academic library lies with the staff. As one colleague observed, our …

New Constraints On The18F(P,Α)15O Rate In Novae From The (D, P) Reaction, R. L. Kozub, D. W. Bardayan, J. C. Batchelder, J. C. Blackmon, C. R. Brune, A. E. Champagne, J. A. Cizewski, T. Davinson, U. Greife, C. J. Gross, C. C. Jewett, R. J. Livesay, Z. Ma, B. H. Moazen, C. D. Nesaraja, L. Sahin, J. P. Scott, D. Shapira, M. S. Smith, J. S. Thomas, P. J. Woods

Faculty Publications

The degree to which the (p,γ) and (p,α) reactions destroy 18F at temperatures (1-4) × 108 K is important for understanding the synthesis of nuclei in nova explosions and for using the long-lived radionuclide 18F, a target of γ-ray astronomy, as a diagnostic of nova mechanisms. The reactions are dominated by low-lying proton resonances near the I8F+p threshold (Ex = 6.411 MeV in 19Ne). To gain further information about these resonances, we used a radioactive 18F beam from the Holifield Radioactive Ion Beam Facility to selectively populate corresponding mirror states in 19F via the inverse 2H(18F,p)19F neutron transfer reaction. Neutron …

School Of Renewable Natural Resources Newsletter, Fall 2005, Louisiana State University And Agricultural & Mechanical College

Research Matters & RNR Newsletters

The annual newsletter from the School of Renewable Natural Resources was a publication which aimed to update and entertain interested readers with the news and research from RNR faculty, students and staff.

Some Aspects Of Jonathan Swift's Perspective On Language, W. K. Percival

1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era

No abstract provided.