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Lorentz-Conformal Transformations In The Plane, Barbara A. Shipman, Patrick D. Shipman, Stephen P. Shipman Mar 2017

Lorentz-Conformal Transformations In The Plane, Barbara A. Shipman, Patrick D. Shipman, Stephen P. Shipman

Faculty Publications

While conformal transformations of the plane preserve Laplace's equation, Lorentz-conformal mappings preserve the wave equation. This property gives rise to a rich Lorentzian geometry in dimension 1+1. In elucidating the geometry of the Lorentzian plane, this work provides a window into the field of pseudo-Riemannian geometry, where the Lorentzian plane is of fundamental importance. In the Lorentzian plane, curvilinear quadrilaterals and pairs of crossing curves are transformed under nonlinear Lorentz-conformal mappings via geometric constructions that can be expressed also by functional formulas. Classes of Lorentz-conformal maps are characterized by their symmetries under subgroups of the dihedral group of order eight, …

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Aquaculture Genomics, Genetics And Breeding In The United States: Current Status, Challenges, And Priorities For Future Research, Hisham Abdelrahman, Mohamed Elhady, Acacia Alcivar-Warren, Standish Allen, Rafet Al-Tobasei, Lisui Bao, Ben Beck, Harvey Blackburn, Brian Bosworth, John Buchanan, Jesse Chappell, William Daniels, Sheng Dong, Rex Dunham, Evan Durland, Ahmed Elaswad, Marta Gomez-Chiarri, Kamal Gosh, Ximing Guo, Perry Hackett, Terry Hanson, Dennis Hedgecock, Tiffany Howard, Leigh Holland, Molly Jackson, Yulin Jin, Karim Kahlil, Thomas Kocher, Tim Leeds, Ning Li, Lauren Lindsey, Shikai Liu, Zhanjiang Liu Feb 2017

Aquaculture Genomics, Genetics And Breeding In The United States: Current Status, Challenges, And Priorities For Future Research, Hisham Abdelrahman, Mohamed Elhady, Acacia Alcivar-Warren, Standish Allen, Rafet Al-Tobasei, Lisui Bao, Ben Beck, Harvey Blackburn, Brian Bosworth, John Buchanan, Jesse Chappell, William Daniels, Sheng Dong, Rex Dunham, Evan Durland, Ahmed Elaswad, Marta Gomez-Chiarri, Kamal Gosh, Ximing Guo, Perry Hackett, Terry Hanson, Dennis Hedgecock, Tiffany Howard, Leigh Holland, Molly Jackson, Yulin Jin, Karim Kahlil, Thomas Kocher, Tim Leeds, Ning Li, Lauren Lindsey, Shikai Liu, Zhanjiang Liu

Faculty Publications

Advancing the production efficiency and profitability of aquaculture is dependent upon the ability to utilize a diverse array of genetic resources. The ultimate goals of aquaculture genomics, genetics and breeding research are to enhance aquaculture production efficiency, sustainability, product quality, and profitability in support of the commercial sector and for the benefit of consumers. In order to achieve these goals, it is important to understand the genomic structure and organization of aquaculture species, and their genomic and phenomic variations, as well as the genetic basis of traits and their interrelationships. In addition, it is also important to understand the mechanisms …

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All-Sky Search For Short Gravitational-Wave Bursts In The First Advanced Ligo Run, B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, B. Allen, A. Allocca, P. A. Altin, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, N. Arnaud, K. G. Arun, S. Ascenzi, G. Ashton, M. Ast Feb 2017

All-Sky Search For Short Gravitational-Wave Bursts In The First Advanced Ligo Run, B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, B. Allen, A. Allocca, P. A. Altin, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, N. Arnaud, K. G. Arun, S. Ascenzi, G. Ashton, M. Ast

Faculty Publications

We present the results from an all-sky search for short-duration gravitational waves in the data of the first run of the Advanced LIGO detectors between September 2015 and January 2016. The search algorithms use minimal assumptions on the signal morphology, so they are sensitive to a wide range of sources emitting gravitational waves. The analyses target transient signals with duration ranging from milliseconds to seconds over the frequency band of 32 to 4096 Hz. The first observed gravitational-wave event, GW150914, has been detected with high confidence in this search; the other known gravitational-wave event, GW151226, falls below the search's sensitivity. …

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A Dynamic-Solver–Consistent Minimum Action Method: With An Application To 2d Navier–Stokes Equations, Xiaoliang Wan, Haijun Yu Feb 2017

A Dynamic-Solver–Consistent Minimum Action Method: With An Application To 2d Navier–Stokes Equations, Xiaoliang Wan, Haijun Yu

Faculty Publications

This paper discusses the necessity and strategy to unify the development of a dynamic solver and a minimum action method (MAM) for a spatially extended system when employing the large deviation principle (LDP) to study the effects of small random perturbations. A dynamic solver is used to approximate the unperturbed system, and a minimum action method is used to approximate the LDP, which corresponds to solving an Euler–Lagrange equation related to but more complicated than the unperturbed system. We will clarify possible inconsistencies induced by independent numerical approximations of the unperturbed system and the LDP, based on which we propose …

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Impact Of Atmospheric Effects On The Energy Reconstruction Of Air Showers Observed By The Surface Detectors Of The Pierre Auger Observatory, A. Aab, P. Abreu, M. Aglietta, I. Al Samarai, I. F.M. Albuquerque, I. Allekotte, A. Almela, J. Alvarez Castillo, J. Alvarez-Muñiz, G. A. Anastasi, L. Anchordoqui, B. Andrada, S. Andringa, C. Aramo, F. Arqueros, N. Arsene, H. Asorey, P. Assis, J. Aublin, G. Avila, A. M. Badescu, A. Balaceanu, R. J. Barreira Luz, C. Baus, J. J. Beatty, K. H. Becker, J. A. Bellido, C. Berat, M. E. Bertaina, X. Bertou, P. L. Biermann, P. Billoir, J. Biteau Feb 2017

Impact Of Atmospheric Effects On The Energy Reconstruction Of Air Showers Observed By The Surface Detectors Of The Pierre Auger Observatory, A. Aab, P. Abreu, M. Aglietta, I. Al Samarai, I. F.M. Albuquerque, I. Allekotte, A. Almela, J. Alvarez Castillo, J. Alvarez-Muñiz, G. A. Anastasi, L. Anchordoqui, B. Andrada, S. Andringa, C. Aramo, F. Arqueros, N. Arsene, H. Asorey, P. Assis, J. Aublin, G. Avila, A. M. Badescu, A. Balaceanu, R. J. Barreira Luz, C. Baus, J. J. Beatty, K. H. Becker, J. A. Bellido, C. Berat, M. E. Bertaina, X. Bertou, P. L. Biermann, P. Billoir, J. Biteau

Faculty Publications

Atmospheric conditions, such as the pressure (P), temperature (T) or air density (-/ P=T), affect the development of extended air showers initiated by energetic cosmic rays. We study the impact of the atmospheric variations on the reconstruction of air showers with data from the arrays of surface detectors of the Pierre Auger Observatory, considering separately the one with detector spacings of 1500m and the one with 750m spacing. We observe modulations in the event rates that are due to the influence of the air density and pressure variations on the measured signals, from which the energy estimators are obtained. We …

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Exact Solution Of The Two-Axis Countertwisting Hamiltonian For The Half-Integer J Case, Feng Pan, Yao Zhong Zhang, Jerry P. Draayer Feb 2017

Exact Solution Of The Two-Axis Countertwisting Hamiltonian For The Half-Integer J Case, Feng Pan, Yao Zhong Zhang, Jerry P. Draayer

Faculty Publications

Bethe ansatz solutions of the two-axis countertwisting Hamiltonian for any (integer and half-integer) J are derived based on the Jordan-Schwinger (differential) boson realization of the SU(2) algebra after desired Euler rotations, where J is the total angular momentum quantum number of the system. It is shown that solutions to the Bethe ansatz equations can be obtained as zeros of the extended Heine-Stieltjes polynomials. Two sets of solutions, with solution number being J + 1 and J respectively when J is an integer and J + 1/2 each when J is a half-integer, are obtained. Properties of the zeros of the …

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Geographic Variation In Apparent Competition Between Native And Invasive Phragmites Australis, Ganesh P. Bhattarai, Laura A. Meyerson, James T. Cronin Feb 2017

Geographic Variation In Apparent Competition Between Native And Invasive Phragmites Australis, Ganesh P. Bhattarai, Laura A. Meyerson, James T. Cronin

Faculty Publications

© 2016 by the Ecological Society of America. Apparent competition, the negative interaction between species mediated by shared natural enemies, is thought to play an important role in shaping the structure and dynamics of natural communities. However, its importance in driving species invasions, and whether the strength of this indirect interaction varies across the latitudinal range of the invasion, has not been fully explored. We performed replicated field experiments at four sites spanning 900 km along the Atlantic Coast of the United States to assess the presence and strength of apparent competition between sympatric native and invasive lineages of Phragmites …

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Post-Hurricane Successional Dynamics In Abundance And Diversity Of Canopy Arthropods In A Tropical Rainforest, T. D. Schowalter, M. R. Willig, S. J. Presley Feb 2017

Post-Hurricane Successional Dynamics In Abundance And Diversity Of Canopy Arthropods In A Tropical Rainforest, T. D. Schowalter, M. R. Willig, S. J. Presley

Faculty Publications

We quantified long-term successional trajectories of canopy arthropods on six tree species in a tropical rainforest ecosystem in the Luquillo Mountains of Puerto Rico that experienced repeated hurricane-induced disturbances during the 19-yr study (1991-2009). We expected: 1) differential performances of arthropod species to result in taxon- or guild-specific responses; 2) differences in initial conditions to result in distinct successional responses to each hurricane; and 3) the legacy of hurricane-created gaps to persist despite subsequent disturbances. At least one significant effect of gap, time after hurricane, or their interaction occurred for 53 of 116 analyses of taxon abundance, 31 of 84 …

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Genome-Wide Survey In African Americans Demonstrates Potential Epistasis Of Fitness In The Human Genome, Heming Wang, Yoonha Choi, Bamidele Tayo, Xuefeng Wang, Nathan Morris, Xiang Zhang, Uli Broeckel, Craig Hanis, Sharon Kardia, Susan Redline, Richard S. Cooper, Hua Tang, Xiaofeng Zhu Feb 2017

Genome-Wide Survey In African Americans Demonstrates Potential Epistasis Of Fitness In The Human Genome, Heming Wang, Yoonha Choi, Bamidele Tayo, Xuefeng Wang, Nathan Morris, Xiang Zhang, Uli Broeckel, Craig Hanis, Sharon Kardia, Susan Redline, Richard S. Cooper, Hua Tang, Xiaofeng Zhu

Faculty Publications

The role played by epistasis between alleles at unlinked loci in shaping population fitness has been debated for many years and the existing evidence has been mainly accumulated from model organisms. In model organisms, fitness epistasis can be systematically inferred by detecting nonindependence of genotypic values between loci in a population and confirmed through examining the number of offspring produced in two-locus genotype groups. No systematic study has been conducted to detect epistasis of fitness in humans owing to experimental constraints. In this study, we developed a novel method to detect fitness epistasis by testing the correlation between local ancestries …

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Regularization And Derivatives Of Multipole Potentials, Ricardo Estrada Feb 2017

Regularization And Derivatives Of Multipole Potentials, Ricardo Estrada

Faculty Publications

The only harmonic homogeneous functions defined in Rn∖{0} are the harmonic polynomials and the so-called multipole potentials, namely functions of the type P(x)=p(x)/|x|2k+n−2 for some harmonic polynomial p of degree k. The first aim of this article is to study the distributional regularization of multipole potentials. We show that even though the Hadamard regularization Pf(p(x)/|x|2k+n−2) exists for any homogeneous polynomial of degree k, the principal value p.v.(p(x)/|x|2k+n−2) exists if and only if p is harmonic; this means that if p is harmonic then for any test function ϕ the divergent integral ∫Rnp(x)ϕ(x)/|x|2k+n−2dx can be computed by employing polar coordinates and …

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Capacities Of Quantum Amplifier Channels, Haoyu Qi, Mark M. Wilde Jan 2017

Capacities Of Quantum Amplifier Channels, Haoyu Qi, Mark M. Wilde

Faculty Publications

Quantum amplifier channels are at the core of several physical processes. Not only do they model the optical process of spontaneous parametric down-conversion, but the transformation corresponding to an amplifier channel also describes the physics of the dynamical Casimir effect in superconducting circuits, the Unruh effect, and Hawking radiation. Here we study the communication capabilities of quantum amplifier channels. Invoking a recently established minimum output-entropy theorem for single-mode phase-insensitive Gaussian channels, we determine capacities of quantum-limited amplifier channels in three different scenarios. First, we establish the capacities of quantum-limited amplifier channels for one of the most general communication tasks, characterized …

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First Measurement Of The Muon Neutrino Charged Current Single Pion Production Cross Section On Water With The T2k Near Detector, K. Abe, C. Andreopoulos, M. Antonova, S. Aoki, A. Ariga, S. Assylbekov, D. Autiero, S. Ban, M. Barbi, G. J. Barker, G. Barr, P. Bartet-Friburg, M. Batkiewicz, F. Bay, V. Berardi, S. Berkman, S. Bhadra, S. Bienstock, A. Blondel, S. Bolognesi, S. Bordoni, S. B. Boyd, D. Brailsford, A. Bravar, C. Bronner, M. Buizza Avanzini, R. G. Calland, T. Campbell Jan 2017

First Measurement Of The Muon Neutrino Charged Current Single Pion Production Cross Section On Water With The T2k Near Detector, K. Abe, C. Andreopoulos, M. Antonova, S. Aoki, A. Ariga, S. Assylbekov, D. Autiero, S. Ban, M. Barbi, G. J. Barker, G. Barr, P. Bartet-Friburg, M. Batkiewicz, F. Bay, V. Berardi, S. Berkman, S. Bhadra, S. Bienstock, A. Blondel, S. Bolognesi, S. Bordoni, S. B. Boyd, D. Brailsford, A. Bravar, C. Bronner, M. Buizza Avanzini, R. G. Calland, T. Campbell

Faculty Publications

The T2K off-axis near detector, ND280, is used to make the first differential cross section measurements of muon neutrino charged current single positive pion production on a water target at energies ∼0.8 GeV. The differential measurements are presented as a function of the muon and pion kinematics, in the restricted phase space defined by pπ+>200 MeV/c, pμ>200 MeV/c, cos(θπ+)>0.3 and cos(θμ)>0.3. The total flux integrated νμ charged current single positive pion production cross section on water in the restricted phase space is measured to be σ

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Exploring The Sensitivity Of Next Generation Gravitational Wave Detectors, B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, K. Ackley, C. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, N. Aggarwal, O. D. Aguiar, A. Ain, P. Ajith, B. Allen, P. A. Altin, S. B. Anderson, W. G. Anderson, K. Arai, M. C. Araya, C. C. Arceneaux, J. S. Areeda, K. G. Arun, G. Ashton, M. Ast, S. M. Aston, P. Aufmuth, C. Aulbert, S. Babak, P. T. Baker, S. W. Ballmer, J. C. Barayoga, S. E. Barclay Jan 2017

Exploring The Sensitivity Of Next Generation Gravitational Wave Detectors, B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, K. Ackley, C. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, N. Aggarwal, O. D. Aguiar, A. Ain, P. Ajith, B. Allen, P. A. Altin, S. B. Anderson, W. G. Anderson, K. Arai, M. C. Araya, C. C. Arceneaux, J. S. Areeda, K. G. Arun, G. Ashton, M. Ast, S. M. Aston, P. Aufmuth, C. Aulbert, S. Babak, P. T. Baker, S. W. Ballmer, J. C. Barayoga, S. E. Barclay

Faculty Publications

The second-generation of gravitational-wave detectors are just starting operation, and have already yielding their first detections. Research is now concentrated on how to maximize the scientific potential of gravitational-wave astronomy. To support this effort, we present here design targets for a new generation of detectors, which will be capable of observing compact binary sources with high signal-to-noise ratio throughout the Universe.

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Electron Interaction With The Spin Angular Momentum Of The Electromagnetic Field, R. F. O'Connell Jan 2017

Electron Interaction With The Spin Angular Momentum Of The Electromagnetic Field, R. F. O'Connell

Faculty Publications

We give a simple derivation and expansion of a recently proposed new relativistic interaction between the electron and the spin angular momentum of the electromagnetic field in quantum electrodynamics (QED). Our derivation is based on the work of Moller, who pointed out that, in special relativity, a particle with spin must always have a finite extension. After generalizing Moller's classical result to include both rotation and quantum effects, we show that it leads to a new contribution to the energy, which is the special relativistic interaction term. In addition, we show that all relativistic terms involving spin terms arising from …

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Wind Wave Behavior In Fetch And Depth Limited Estuaries, Arash Karimpour, Qin Chen, Robert R. Twilley Jan 2017

Wind Wave Behavior In Fetch And Depth Limited Estuaries, Arash Karimpour, Qin Chen, Robert R. Twilley

Faculty Publications

Wetland dominated estuaries serve as one of the most productive natural ecosystems through their ecological, economic and cultural services, such as nursery grounds for fisheries, nutrient sequestration, and ecotourism. The ongoing deterioration of wetland ecosystems in many shallow estuaries raises concerns about the contributing erosive processes and their roles in restraining coastal restoration efforts. Given the combination of wetlands and shallow bays as landscape components that determine the function of estuaries, successful restoration strategies require knowledge of wind wave behavior in fetch and depth limited water as a critical design feature. We experimentally evaluate physics of wind wave growth in …

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Conductive-Probe Measurements With Nanodots Of Free-Base And Metallated Porphyrins, Xianglin Zhai, Neepa Malsi Kumari Kuruppu Arachchige, Pedro Derosa, Jayne C. Garno Jan 2017

Conductive-Probe Measurements With Nanodots Of Free-Base And Metallated Porphyrins, Xianglin Zhai, Neepa Malsi Kumari Kuruppu Arachchige, Pedro Derosa, Jayne C. Garno

Faculty Publications

© 2016 The conductive properties of nanodots of model porphyrins were investigated using conductive-probe atomic force microscopy (CP-AFM). Porphyrins provide excellent models for preparing surface structures that can potentially be used as building blocks for devices. The conjugated, planar structure of porphyrins offers opportunities for tailoring the electronic properties. Two model porphyrins were selected for studies, 5,10,15,20-tetraphenyl-21H,23H-porphine cobalt(II) (TPC) and its metal-free analog 5,10,15,20-tetraphenyl-21H,23H-porphine (TPP). Nanodots of TPP and TPC were prepared within a dodecanethiol resist on gold using particle lithography. The nanopatterned surfaces exhibit millions of reproducible test structures of porphyrin nanodots. The porphyrin nanodots have slight differences in …

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Analysis Of Compaction Shock Interactions During Ddt Of Low Density Hmx, Pratap T. Rao, Keith A. Gonthier Jan 2017

Analysis Of Compaction Shock Interactions During Ddt Of Low Density Hmx, Pratap T. Rao, Keith A. Gonthier

Faculty Publications

Deflagration-to-Detonation Transition (DDT) in confined, low density granular HMX occurs by a complex mechanism that involves compaction shock interactions within the material. Piston driven DDT experiments indicate that detonation is abruptly triggered by the interaction of a strong combustion-supported secondary shock and a piston-supported primary (input) shock, where the nature of the interaction depends on initial packing density and primary shock strength. These interactions influence transition by affecting dissipative heating within the microstructure during pore collapse. Inert meso-scale simulations of successive shock loading of low density HMX are performed to examine how dissipation and hot-spot formation are affected by the …

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An Efficient Numerical Progressive Diagonalization Scheme For The Quantum Rabi Model Revisited, Feng Pan, Lina Bao, Lianrong Dai, Jerry P. Draayer Jan 2017

An Efficient Numerical Progressive Diagonalization Scheme For The Quantum Rabi Model Revisited, Feng Pan, Lina Bao, Lianrong Dai, Jerry P. Draayer

Faculty Publications

An efficient numerical progressive diagonalization scheme for the quantum Rabi model is revisited. The advantage of the scheme lies in the fact that the quantum Rabi model can be solved almost exactly by using the scheme that only involves a finite set of one variable polynomial equations. The scheme is especially efficient for a specified eigenstate of the model, for example, the ground state. Some low-lying level energies of the model for several sets of parameters are calculated, of which one set of the results is compared to that obtained from the Braak's exact solution proposed recently. It is shown …

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Nickel Speciation In Cement-Stabilized/Solidified Metal Treatment Filtercakes, Amitava Roy, Julia A. Stegemann Jan 2017

Nickel Speciation In Cement-Stabilized/Solidified Metal Treatment Filtercakes, Amitava Roy, Julia A. Stegemann

Faculty Publications

Cement-based stabilization/solidification (S/S) is used to decrease environmental leaching of contaminants from industrial wastes. In this study, two industrial metal treatment filtercakes were characterized by X-ray diffractometry (XRD), thermogravimetric and differential thermogravimetric analysis (TG/DTG) and Fourier transform infrared (FTIR); speciation of nickel was examined by X-ray absorption (XAS) spectroscopy. Although the degree of carbonation and crystallinity of the two untreated filtercakes differed, α-nickel hydroxide was identified as the primary nickel-containing phase by XRD and nickel K edge XAS. XAS showed that the speciation of nickel in the filtercake was unaltered by treatment with any of five different S/S binder systems. …

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Nickel Speciation In Cement-Stabilized/Solidified Metal Treatment Filtercakes, Amitava Roy, Julia A. Stegemann Jan 2017

Nickel Speciation In Cement-Stabilized/Solidified Metal Treatment Filtercakes, Amitava Roy, Julia A. Stegemann

Faculty Publications

Cement-based stabilization/solidification (S/S) is used to decrease environmental leaching of contaminants from industrial wastes. In this study, two industrial metal treatment filtercakes were characterized by X-ray diffractometry (XRD), thermogravimetric and differential thermogravimetric analysis (TG/DTG) and Fourier transform infrared (FTIR); speciation of nickel was examined by X-ray absorption (XAS) spectroscopy. Although the degree of carbonation and crystallinity of the two untreated filtercakes differed, α-nickel hydroxide was identified as the primary nickel-containing phase by XRD and nickel K edge XAS. XAS showed that the speciation of nickel in the filtercake was unaltered by treatment with any of five different S/S binder systems. …

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Twisted Exponents And Twisted Frobenius–Schur Indicators For Hopf Algebras, Daniel S. Sage, Maria D. Vega Jan 2017

Twisted Exponents And Twisted Frobenius–Schur Indicators For Hopf Algebras, Daniel S. Sage, Maria D. Vega

Faculty Publications

Classically, the exponent of a group is the least common multiple of the orders of its elements. This notion was generalized by Etingof and Gelaki to Hopf algebras. Kashina, Sommerhäuser, and Zhu later observed that there is a strong connection between exponents and Frobenius–Schur indicators. In this article, we introduce the notion of twisted exponents and show there is a similar relationship between the twisted exponent and the twisted Frobenius–Schur indicators defined in previous work of the authors. In particular, we exhibit a new formula for the twisted indicators and use it to prove periodicity and rationality statements.

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Diversity Of Evoked Astrocyte Ca2+ Dynamics Quantified Through Experimental Measurements And Mathematical Modeling., Taheri M, Handy G, Borisyuk A, White Ja Jan 2017

Diversity Of Evoked Astrocyte Ca2+ Dynamics Quantified Through Experimental Measurements And Mathematical Modeling., Taheri M, Handy G, Borisyuk A, White Ja

Faculty Publications

No abstract provided.

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Gumbo Yearbook, Class Of 2017, Louisiana State University And Agricultural And Mechanical College Jan 2017

Gumbo Yearbook, Class Of 2017, Louisiana State University And Agricultural And Mechanical College

Gumbo Yearbook

The Gumbo yearbook chronicles the entire academic year at LSU. In words and especially photos, the Gumbo shows the people, places, and events that make each year unique. In addition to formal portraits of schools and departments, the book contains hundreds of snapshots of students with their friends and dozens of pages showcasing organizations.

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Longitudinal Analysis Of A Diversity Support Program In Biology: A National Call For Further Assessment, Cissy J. Ballen, Nicholas A. Mason Jan 2017

Longitudinal Analysis Of A Diversity Support Program In Biology: A National Call For Further Assessment, Cissy J. Ballen, Nicholas A. Mason

Faculty Publications

© The Author(s) 2017. National calls to improve the performance and persistence of students from historically underrepresented backgrounds in science have led to a surge of research on inclusive, evidence-based teaching methods. Less work has revealed the effects of diversity support initiatives that improve campus climate and community cohesion. Here, we examine whether participation in the Biology Scholars Program (BSP) at Cornell University-a diversity support program at a prominent university-affects underrepresented racial minority (URM) student performance. We found that BSP participants are less academically prepared when they enter college but typically have GPAs similar to those of their non-BSP counterparts …

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Homeomorphic Property Of The Stochastic Flow Of A Natural Equation In Multi-Dimensional Case, Fatima Benziadi, Abdeldjabbar Kandouci Jan 2017

Homeomorphic Property Of The Stochastic Flow Of A Natural Equation In Multi-Dimensional Case, Fatima Benziadi, Abdeldjabbar Kandouci

Communications on Stochastic Analysis

No abstract provided.

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Path From Paper To Paperless At Abana O&P, Stephanie Lutfallah Jan 2017

Path From Paper To Paperless At Abana O&P, Stephanie Lutfallah

Honors Capstones

No abstract provided.

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Strong Converse Rates For Quantum Communication, Marco Tomamichel, Mark M. Wilde, Andreas Winter Jan 2017

Strong Converse Rates For Quantum Communication, Marco Tomamichel, Mark M. Wilde, Andreas Winter

Faculty Publications

We revisit a fundamental open problem in quantum information theory, namely, whether it is possible to transmit quantum information at a rate exceeding the channel capacity if we allow for a non-vanishing probability of decoding error. Here, we establish that the Rains information of any quantum channel is a strong converse rate for quantum communication. For any sequence of codes with rate exceeding the Rains information of the channel, we show that the fidelity vanishes exponentially fast as the number of channel uses increases. This remains true even if we consider codes that perform classical postprocessing on the transmitted quantum …

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Reanalysis Of Ligo Black-Hole Coalescences With Alternative Prior Assumptions, Davide Gerosa, Salvatore Vitale, Carl Johan Haster, Katerina Chatziioannou, Aaron Zimmerman, G. González, R. Hynes Jan 2017

Reanalysis Of Ligo Black-Hole Coalescences With Alternative Prior Assumptions, Davide Gerosa, Salvatore Vitale, Carl Johan Haster, Katerina Chatziioannou, Aaron Zimmerman, G. González, R. Hynes

Faculty Publications

We present a critical reanalysis of the black-hole binary coalescences detected during LIGO's first observing run under different Bayesian prior assumptions. We summarize the main findings of Vitale et al. (2017) and show additional marginalized posterior distributions for some of the binaries' intrinsic parameters. These findings were presented at IAU Symposium 338, held on October 16-19, 2017 in Baton Rouge, LA, USA.

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Strong-Lensing Of Gravitational Waves By Galaxy Clusters, Graham P. Smith, Christopher Berry, Matteo Bianconi, Will M. Farr, Mathilde Jauzac, Richard Massey, Johan Richard, Andrew Robertson, Keren Sharon, Alberto Vecchio, John Veitch, G. González, R. Hynes Jan 2017

Strong-Lensing Of Gravitational Waves By Galaxy Clusters, Graham P. Smith, Christopher Berry, Matteo Bianconi, Will M. Farr, Mathilde Jauzac, Richard Massey, Johan Richard, Andrew Robertson, Keren Sharon, Alberto Vecchio, John Veitch, G. González, R. Hynes

Faculty Publications

Discovery of strongly-lensed gravitational wave (GW) sources will unveil binary compact objects at higher redshifts and lower intrinsic luminosities than is possible without lensing. Such systems will yield unprecedented constraints on the mass distribution in galaxy clusters, measurements of the polarization of GWs, tests of General Relativity, and constraints on the Hubble parameter. Excited by these prospects, and intrigued by the presence of so-called "heavy black holes" in the early detections by LIGO-Virgo, we commenced a search for strongly-lensed GWs and possible electromagnetic counterparts in the latter stages of the second LIGO observing run (O2). Here, we summarise our calculation …

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The Basic Physics Of The Binary Black Hole Merger Gw150914, B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, B. Allen, A. Allocca, P. A. Altin, S. B. Anderson, W. G. Anderson, K. Arai, M. C. Araya, C. C. Arceneaux, J. S. Areeda, N. Arnaud, K. G. Arun, S. Ascenzi, G. Ashton, M. Ast Jan 2017

The Basic Physics Of The Binary Black Hole Merger Gw150914, B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, B. Allen, A. Allocca, P. A. Altin, S. B. Anderson, W. G. Anderson, K. Arai, M. C. Araya, C. C. Arceneaux, J. S. Areeda, N. Arnaud, K. G. Arun, S. Ascenzi, G. Ashton, M. Ast

Faculty Publications

The first direct gravitational-wave detection was made by the Advanced Laser Interferometer Gravitational Wave Observatory on September 14, 2015. The GW150914 signal was strong enough to be apparent, without using any waveform model, in the filtered detector strain data. Here, features of the signal visible in the data are analyzed using concepts from Newtonian physics and general relativity, accessible to anyone with a general physics background. The simple analysis presented here is consistent with the fully general-relativistic analyses published elsewhere, in showing that the signal was produced by the inspiral and subsequent merger of two black holes. The black holes …

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