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Faculty Publications

2012

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The Impact Of Coastal Phytoplankton Blooms On Ocean-Atmosphere Thermal Energy Exchange: Evidence From A Two-Way Coupled Numerical Modeling System, Jason K. Jolliff, Travis A. Smith, Charlie N. Barron, Sergio Derada, Stephanie C. Anderson, Richard W. Gould, Robert A. Arnone Dec 2012

The Impact Of Coastal Phytoplankton Blooms On Ocean-Atmosphere Thermal Energy Exchange: Evidence From A Two-Way Coupled Numerical Modeling System, Jason K. Jolliff, Travis A. Smith, Charlie N. Barron, Sergio Derada, Stephanie C. Anderson, Richard W. Gould, Robert A. Arnone

Faculty Publications

A set of sensitivity experiments are performed with a two-way coupled and nested ocean-atmosphere forecasting system in order to deconvolve how dense phytoplankton stocks in a coastal embayment may impact thermal energy exchange processes. Monterey Bay simulations parameterizing solar shortwave transparency in the surface ocean as an invariant oligotrophic oceanic water type estimate consistently colder sea surface temperature (SST) than simulations utilizing more realistic, spatially varying shortwave attenuation terms based on satellite estimates of surface algal pigment concentration. These SST differences lead to an similar to 88% increase in the cumulative turbulent thermal energy transfer from the ocean to the …

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Numerical Loop Quantum Cosmology: An Overview, Parampreet Singh Dec 2012

Numerical Loop Quantum Cosmology: An Overview, Parampreet Singh

Faculty Publications

A brief review of various numerical techniques used in loop quantum cosmology and results is presented. These include the way extensive numerical simulations provided insights into the resolution of classical singularities, resulting in the key prediction of the bounce at the Planck scale in different models, and the numerical methods used to analyze the properties of the quantum difference operator and the von Neumann stability issues. Using the quantization of a massless scalar field in an isotropic spacetime as a template, an attempt is made to highlight the complementarity of different methods to gain understanding of the new physics emerging …

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On The Metallicity Dependence Of Crystalline Silicates In Oxygen-Rich Asymptotic Giant Branch Stars And Red Supergiants, O. C. Jones, F. Kemper, B. A. Sargent, I. Mcdonald, C. Gielen, Paul M. Woods, G. C. Sloan, M. L. Boyer, A. A. Zijlstra, G. C. Clayton, K. E. Kraemer, S. Srinivasan, P. M.E. Ruffle Dec 2012

On The Metallicity Dependence Of Crystalline Silicates In Oxygen-Rich Asymptotic Giant Branch Stars And Red Supergiants, O. C. Jones, F. Kemper, B. A. Sargent, I. Mcdonald, C. Gielen, Paul M. Woods, G. C. Sloan, M. L. Boyer, A. A. Zijlstra, G. C. Clayton, K. E. Kraemer, S. Srinivasan, P. M.E. Ruffle

Faculty Publications

We investigate the occurrence of crystalline silicates in oxygen-rich evolved stars across a range of metallicities and mass-loss rates. It has been suggested that the crystalline silicate feature strength increases with increasingmass-loss rate, implying a correlation between lattice structure and wind density. To test this, we analyse Spitzer Infrared Spectrograph and Infrared Space Observatory Short Wavelength Spectrometer spectra of 217 oxygen-rich asymptotic giant branch and 98 red supergiants in the Milky Way, the Large and Small Magellanic Clouds, and Galactic globular clusters. These encompass a range of spectral morphologies from the spectrally rich which exhibit a wealth of crystalline and …

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Local Filters Limit Species Diversity, But Species Pools Determine Composition, Tara K. Rajaniemi, Deborah E. Goldberg, Roy Turkington, Andrew R. Dyer Dec 2012

Local Filters Limit Species Diversity, But Species Pools Determine Composition, Tara K. Rajaniemi, Deborah E. Goldberg, Roy Turkington, Andrew R. Dyer

Faculty Publications

In a series of three experiments, we tested for effects of species pools, resource stress, and species interactions on four aspects of community structure: species richness, evenness, species composition, and functional group composition. We also examined whether the impacts of species interactions on the community varied with resource availability or species pool. Communities of sand dune annuals grew from seed bank samples collected from two sites in three different years, so that the species pool differed at two levels: the source site and the year of seed bank collection. Communities experienced one of three irrigation treatments and a range of …

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A Comparison Of Boltzmann And Gibbs Definitions Of Microcanonical Entropy For Small Systems, Randall B. Shirts Dec 2012

A Comparison Of Boltzmann And Gibbs Definitions Of Microcanonical Entropy For Small Systems, Randall B. Shirts

Faculty Publications

Two different definitions of entropy, S= klnW, in the microcanonical ensemble have been competing for over 100 years. The Boltzmann/Planck definition is that W is the number of states accessible to the system at its energy E (also called the surface entropy). The Gibbs/Hertz definition is that W is the number of states of the system up to the energy E (also called the volume entropy). These two definitions agree for large systems but differ by terms of order N-1 for small systems, where N is the number of particles in the system. For three analytical …

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Revision Of The Endemic Malagasy Cavefish Genus Typhleotris (Teleostei: Gobiiformes: Milyeringidae), With Discussion Of Its Phylogenetic Placement And Description Of A New Species, John S. Sparks, Prosanta Chakrabarty Dec 2012

Revision Of The Endemic Malagasy Cavefish Genus Typhleotris (Teleostei: Gobiiformes: Milyeringidae), With Discussion Of Its Phylogenetic Placement And Description Of A New Species, John S. Sparks, Prosanta Chakrabarty

Faculty Publications

Troglobitic cavefishes of the genus Typhleotris, endemic to coastal southwestern Madagascar, are taxonomically reviewed and a new darkly pigmented species, Typhleotris mararybe, is described from an isolated karst sinkhole on the coastal plain below the Mahafaly Plateau. The new species, known only from Grotte de Vitane (Vitany) near the town of Itampolo, is unique among blind cavefishes in being uniformly darkly pigmented, rather than fully depigmented or exceptionally light in coloration. In addition to its dark coloration (vs. depigmented, translucent white body in congeners), the new species can be distinguished from its two congeners, Typhleotris madagascariensis and T. pauliani, by …

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Genomic Impact Of Eukaryotic Transposable Elements, Irina R. Arkhipova, Mark A. Batzer, Juergen Brosius, Cédric Feschotte, John V. Moran, Jürgen Schmitz, Jerzy Jurka Dec 2012

Genomic Impact Of Eukaryotic Transposable Elements, Irina R. Arkhipova, Mark A. Batzer, Juergen Brosius, Cédric Feschotte, John V. Moran, Jürgen Schmitz, Jerzy Jurka

Faculty Publications

The third international conference on the genomic impact of eukaryotic transposable elements (TEs) was held 24 to 28 February 2012 at the Asilomar Conference Center, Pacific Grove, CA, USA. Sponsored in part by the National Institutes of Health grant 5 P41 LM006252, the goal of the conference was to bring together researchers from around the world who study the impact and mechanisms of TEs using multiple computational and experimental approaches. The meeting drew close to 170 attendees and included invited floor presentations on the biology of TEs and their genomic impact, as well as numerous talks contributed by young scientists. …

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Light-Induced States In Attosecond Transient Absorption Spectra Of Laser-Dressed Helium, Shaohao Chen, M. Justine Bell, Annelise R. Beck, Hiroki Mashiko, Mengxi Wu, Adrian N. Pfeiffer, Mette B. Gaarde, Daniel M. Neumark, Stephen R. Leone, Kenneth J. Schafer Dec 2012

Light-Induced States In Attosecond Transient Absorption Spectra Of Laser-Dressed Helium, Shaohao Chen, M. Justine Bell, Annelise R. Beck, Hiroki Mashiko, Mengxi Wu, Adrian N. Pfeiffer, Mette B. Gaarde, Daniel M. Neumark, Stephen R. Leone, Kenneth J. Schafer

Faculty Publications

Laser-dressed absorption in atomic helium is studied, both theoretically and experimentally, by transient absorption spectroscopy using isolated 400-as pulses centered at 22 eV and 12-fs near-infrared (NIR) pulses with 780-nm central wavelength. Multiple features in the helium singly excited bound-state spectrum are observed only when the NIR and attosecond pulses are overlapped in time. Theoretical analysis indicates that these light-induced structures (LISs) are the intermediate states in resonant, second-order processes that transfer population to multiple dipole forbidden states. The use of broadband, coherent extreme ultraviolet (XUV) radiation allows observation of these LISs without specifically tuning to a two-photon resonance, as …

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Quantum Gravity Extension Of The Inflationary Scenario, Ivan Agullo, Abhay Ashtekar, William Nelson Dec 2012

Quantum Gravity Extension Of The Inflationary Scenario, Ivan Agullo, Abhay Ashtekar, William Nelson

Faculty Publications

Since the standard inflationary paradigm is based on quantum field theory on classical space-times, it excludes the Planck era. Using techniques from loop quantum gravity, the paradigm is extended to a self-consistent theory from the Planck scale to the onset of slow roll inflation, covering some 11 orders of magnitude in energy density and curvature. This preinflationary dynamics also opens a small window for novel effects, e.g., a source for non-Gaussianities, which could extend the reach of cosmological observations to the deep Planck regime of the early Universe. © 2012 American Physical Society.

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Redlined Text Of The Leahy-Smith America Invents Act (Aia) And Unrelated Sections Of The Patent Act Pending Enactment Of H.R. 6621, Brian J. Love Dec 2012

Redlined Text Of The Leahy-Smith America Invents Act (Aia) And Unrelated Sections Of The Patent Act Pending Enactment Of H.R. 6621, Brian J. Love

Faculty Publications

No abstract provided.

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A Smartphone Design Approach To User Communication Interface For Administering Storage System Network, Weider Yu, Xiao Su, Jason Hansen Dec 2012

A Smartphone Design Approach To User Communication Interface For Administering Storage System Network, Weider Yu, Xiao Su, Jason Hansen

Faculty Publications

This paper investigates the feasibility and potential of using a mobile smartphone as a user administration control for storage system network. It includes the design and implementation of a mobile smartphone software system that can be used to perform system administration activities on the storage system without the need of using a laptop or desktop system. In the paper the design of some effective metaphors to present the storage system on the limited display area of a mobile smartphone device and the set of system features chosen for implementation are presented. Current storage system administration is limited to using storage …

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The Cosmic Christ: The Christology Of Joseph Sittler, Steven C. Bouma-Prediger Dec 2012

The Cosmic Christ: The Christology Of Joseph Sittler, Steven C. Bouma-Prediger

Faculty Publications

Christians seeking to "save the planet" have to relate "creation" with "salvation" in a way that does justice to both themes. This collection explores the ways in which this task is approached in a wide range of recent theological movements. It includes sections by 54 authors from all over the world. The book provides a barometer of contemporary theological movements.

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Assimilating Altimetric Data Into A South China Sea Model, Chau-Ron Wu, Ping-Tung Shaw, Shenn-Yu Chao Dec 2012

Assimilating Altimetric Data Into A South China Sea Model, Chau-Ron Wu, Ping-Tung Shaw, Shenn-Yu Chao

Faculty Publications

Sea surface heights from the TOPEX/Poseidon altimeter are assimilated into a three-dimensional primitive equation model to derive the circulation in the South China Sea. With data assimilation the model resolves not only the basinwide circulation but also a dipole off Vietnam and a low/high feature near the Luzon Strait. Mesoscale features are missing in the simulation without data assimilation because of poor resolution in the wind field and inadequate knowledge of the transport through the Luzon Strait. Compared to the case without data assimilation, data assimilation reduces the root mean square error between the simulated and observed sea surface heights …

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High Performance Low Temperature Solid Oxide Fuel Cells With Novel Electrode Architecture, Yu Chen, Qian Liu, Zhibin Yang, Fanglin Chen, Minfang Han Dec 2012

High Performance Low Temperature Solid Oxide Fuel Cells With Novel Electrode Architecture, Yu Chen, Qian Liu, Zhibin Yang, Fanglin Chen, Minfang Han

Faculty Publications

In this study, we have fabricated high performance low temperature solid oxide fuel cells (LT-SOFCs) with both acicular anodes and cathodes with thin Gd-doped ceria (GDC) electrolyte film. The acicular Ni-Gd0.1Ce0.9O2−δ (Ni-GDC) anode was prepared using freeze drying tape casting, while the hierarchically porous cathode with nano-size Sm0.5Sr0.5CoO3 (SSC) particles covering an acicular GDC skeleton was prepared by a combination of freeze drying tape casting and self-rising approaches. The acicular electrodes with 5–200 μm pores/channels enhance mass transport, while SSC particles of about 50 nm in the cathode promote …

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Naturally Occurring Carboxypeptidase A6 Mutations: Effect On Enzyme Function And Association With Epilepsy, Matthew R. Sapio, Annick Salzmann, Monique Vessaz, Arielle Crespel, Peter J. Lyons, Alain Malafosse, Lloyd D. Fricker Dec 2012

Naturally Occurring Carboxypeptidase A6 Mutations: Effect On Enzyme Function And Association With Epilepsy, Matthew R. Sapio, Annick Salzmann, Monique Vessaz, Arielle Crespel, Peter J. Lyons, Alain Malafosse, Lloyd D. Fricker

Faculty Publications

Carboxypeptidase A6 (CPA6) is a member of the A/B subfamily of M14 metallocarboxypeptidases that is expressed in brain and many other tissues during development. Recently, two mutations in human CPA6 were associated with febrile seizures and/or temporal lobe epilepsy. In this study we screened for additional CPA6 mutations in patients with febrile seizures and focal epilepsy, which encompasses the temporal lobe epilepsy subtype. Mutations found from this analysis as well as CPA6 mutations reported in databases of single nucleotide polymorphisms were further screened by analysis of the modeled proCPA6 protein structure and the functional role of the mutated amino acid. …

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Early Invitation To Food And/Or Multiple Micronutrient Supplementation In Pregnancy Does Not Affect Body Composition In Offspring At 54 Months: Follow-Up Of The Minimat Randomized Trial, Bangladesh, Ashraful Islam Khan, Iqbal Kabir, Sophie Hawkesworth, Eva‐Charlotte Ekström, Shams Arifeen, Edward A. Frongillo Jr., Lars Åke Persson Dec 2012

Early Invitation To Food And/Or Multiple Micronutrient Supplementation In Pregnancy Does Not Affect Body Composition In Offspring At 54 Months: Follow-Up Of The Minimat Randomized Trial, Bangladesh, Ashraful Islam Khan, Iqbal Kabir, Sophie Hawkesworth, Eva‐Charlotte Ekström, Shams Arifeen, Edward A. Frongillo Jr., Lars Åke Persson

Faculty Publications

Growth patterns in early life are associated with later health.The effect of nutrition duringin uterodevelopmenton later body composition is unclear. We evaluated whether prenatal early invitation to food and/or multiplemicronutrient supplementation (MMS) in pregnancy has an effect on offspring body composition at 54 monthsof age. In Maternal and Infant Nutrition Interventions in Matlab trial (ISRCTN16581394) in Bangladesh, 4436pregnant women were randomised into six equally sized groups: double-masked supplementation with capsulesof either 30 mg Fe and 400mg folic acid, or 60 mg Fe and 400mg folic acid, or MMS (15 micronutrients), wascombined with a randomised early invitation (around 9 weeks) or …

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The Transiting System Gj1214: High-Precision Defocused Transit Observations And A Search For Evidence Of Transit Timing Variation, K. B.W. Harpsøe, S. Hardis, T. C. Hinse, U. G. Jørgensen, L. Mancini, J. Southworth, K. A. Alsubai, V. Bozza, P. Browne, M. J. Burgdorf, S. Calchi Novati, P. Dodds, M. Dominik, X. S. Fang, F. Finet, T. Gerner, S. H. Gu, M. Hundertmark, J. Jessen-Hansen, N. Kains, E. Kerins, H. Kjeldsen, C. Liebig, M. N. Lund, M. Lundkvist, M. Mathiasen, D. Nesvorný, N. Nikolov, M. T. Penny, S. Proft, S. Rahvar, D. Ricci, K. C. Sahu Dec 2012

The Transiting System Gj1214: High-Precision Defocused Transit Observations And A Search For Evidence Of Transit Timing Variation, K. B.W. Harpsøe, S. Hardis, T. C. Hinse, U. G. Jørgensen, L. Mancini, J. Southworth, K. A. Alsubai, V. Bozza, P. Browne, M. J. Burgdorf, S. Calchi Novati, P. Dodds, M. Dominik, X. S. Fang, F. Finet, T. Gerner, S. H. Gu, M. Hundertmark, J. Jessen-Hansen, N. Kains, E. Kerins, H. Kjeldsen, C. Liebig, M. N. Lund, M. Lundkvist, M. Mathiasen, D. Nesvorný, N. Nikolov, M. T. Penny, S. Proft, S. Rahvar, D. Ricci, K. C. Sahu

Faculty Publications

Aims. We present 11 high-precision photometric transitobservations of the transiting super-Earth planet GJ≠1214≠b. Combining these data with observations from other authors, we investigate the ephemeris for possible signs of transit timing variations (TTVs) using a Bayesian approach. Methods. The observations were obtained using telescope-defocusing techniques, and achieve a high precision with random errors in the photometry as low as 1 mmag per point. To investigate the possibility of TTVs in the light curve, we calculate the overall probability of a TTV signal using Bayesian methods. Results. The observations are used to determine the photometric parameters and the physical …

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Analysis Of Stomach And Gut Microbiomes Of The Eastern Oyster (Crassostrea Virginica) From Coastal Louisiana, Usa, Gary M. King, Craig Judd, Cheryl R. Kuske, Conor Smith Dec 2012

Analysis Of Stomach And Gut Microbiomes Of The Eastern Oyster (Crassostrea Virginica) From Coastal Louisiana, Usa, Gary M. King, Craig Judd, Cheryl R. Kuske, Conor Smith

Faculty Publications

We used high throughput pyrosequencing to characterize stomach and gut content microbiomes of Crassostrea virginica, the Easter oyster, obtained from two sites, one in Barataria Bay (Hackberry Bay) and the other in Terrebonne Bay (Lake Caillou), Louisiana, USA. Stomach microbiomes in oysters from Hackberry Bay were overwhelmingly dominated by Mollicutes most closely related to Mycoplasma; a more rich community dominated by Planctomyctes occurred in Lake Caillou oyster stomachs. Gut communities for oysters from both sites differed from stomach communities, and harbored a relatively diverse assemblage of phylotypes. Phylotypes most closely related to Shewanella and a Chloroflexi strain dominated the Lake …

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Genomic And Physiological Footprint Of The Deepwater Horizon Oil Spill On Resident Marsh Fishes, Andrew Whitehead, Benjamin Dubansky, Charlotte Bodinier, Tzintzuni I. Garcia, Scott Miles, Chet Pilley, Vandana Raghunathan, Jennifer L. Roach, Nan Walker, Ronald B. Walter, Charles D. Rice, Fernando Galvez Dec 2012

Genomic And Physiological Footprint Of The Deepwater Horizon Oil Spill On Resident Marsh Fishes, Andrew Whitehead, Benjamin Dubansky, Charlotte Bodinier, Tzintzuni I. Garcia, Scott Miles, Chet Pilley, Vandana Raghunathan, Jennifer L. Roach, Nan Walker, Ronald B. Walter, Charles D. Rice, Fernando Galvez

Faculty Publications

The biological consequences of the Deepwater Horizon oil spill are unknown, especially for resident organisms. Here, we report results from a field study tracking the effects of contaminating oil across space and time in resident killifish during the first 4 mo of the spill event. Remote sensing and analytical chemistry identified exposures, which were linked to effects in fish characterized by genome expression and associated gill immunohistochemistry, despite very low concentrations of hydrocarbons remaining in water and tissues. Divergence in genome expression coincides with contaminating oil and is consistent with genome responses that are predictive of exposure to hydrocarbon-like chemicals …

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Aggregation And Dynamics Of Oligocholate Transporters In Phospholipid Bilayers Revealed By Solid-State Nmr Spectroscopy, Tuo Wang, Lakmini Widanapathirana, Yan Zhao, Mei Hong Dec 2012

Aggregation And Dynamics Of Oligocholate Transporters In Phospholipid Bilayers Revealed By Solid-State Nmr Spectroscopy, Tuo Wang, Lakmini Widanapathirana, Yan Zhao, Mei Hong

Faculty Publications

Macrocycles made of cholate building blocks were previously found to transport glucose readily across lipid bilayers. In this study, an 15N, 13Cα-labeled glycine was inserted into a cyclic cholate trimer and attached at the end of a linear trimer, respectively. The isotopic labeling allowed us to use solid-state NMR spectroscopy to study the dynamics, aggregation, and depth of insertion of these compounds in lipid membranes. The cyclic compound was found to be mostly immobilized in DLPC, POPC/POPG, and POPC/POPG/cholesterol membranes, whereas the linear trimer displayed large-amplitude motion that depended on the membrane thickness and viscosity. 13C-detected 1H spin diffusion experiments …

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Microbial Life At -13°C In The Brine Of An Ice-Sealed Antarctic Lake, Alison E. Murray, Fabien Kenig, Christian H. Fritsen, Christopher P. Mckay, Kaelin M. Cawley, Ross Edwards, Emanuele Kuhn, Diane M. Mcknight, Nathaniel E. Ostrom, Vivian Peng, Adrian Ponce, John C. Priscu, Vladimir Samarkin, Ashley T. Townsend, Protima Wagh, Seth A. Young, Pung To Yung, Peter T. Doran Dec 2012

Microbial Life At -13°C In The Brine Of An Ice-Sealed Antarctic Lake, Alison E. Murray, Fabien Kenig, Christian H. Fritsen, Christopher P. Mckay, Kaelin M. Cawley, Ross Edwards, Emanuele Kuhn, Diane M. Mcknight, Nathaniel E. Ostrom, Vivian Peng, Adrian Ponce, John C. Priscu, Vladimir Samarkin, Ashley T. Townsend, Protima Wagh, Seth A. Young, Pung To Yung, Peter T. Doran

Faculty Publications

The permanent ice cover of Lake Vida (Antarctica) encapsulates an extreme cryogenic brine ecosystem (-13 °C; salinity, 200). This aphotic ecosystem is anoxic and consists of a slightly acidic (pH 6.2) sodium chloride-dominated brine. Expeditions in 2005 and 2010 were conducted to investigate the biogeochemistry of Lake Vida's brine system. A phylogenetically diverse and metabolically active Bacteria dominated microbial assemblage was observed in the brine. These bacteria live under very high levels of reduced metals, ammonia, molecular hydrogen (H2), and dissolved organic carbon, as well as high concentrations of oxidized species of nitrogen (i.e., supersaturated nitrous oxide and ∼1 mmol·L-1 …

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Impact Of The Deepwater Horizon Oil Spill On A Deep-Water Coral Community In The Gulf Of Mexico, Helen K. White, Pen Yuan Hsing, Walter Cho, Timothy M. Shank, Erik E. Cordes, Andrea M. Quattrini, Robert K. Nelson, Richard Camilli, Amanda W.J. Demopoulos, Christopher R. German, James M. Brooks, Harry H. Roberts, William Shedd, Christopher M. Reddy, Charles R. Fisher Dec 2012

Impact Of The Deepwater Horizon Oil Spill On A Deep-Water Coral Community In The Gulf Of Mexico, Helen K. White, Pen Yuan Hsing, Walter Cho, Timothy M. Shank, Erik E. Cordes, Andrea M. Quattrini, Robert K. Nelson, Richard Camilli, Amanda W.J. Demopoulos, Christopher R. German, James M. Brooks, Harry H. Roberts, William Shedd, Christopher M. Reddy, Charles R. Fisher

Faculty Publications

To assess the potential impact of the Deepwater Horizon oil spill on offshore ecosystems, 11 sites hosting deep-water coral communities were examined 3 to 4 mo after the well was capped. Healthy coral communities were observed at all sites >20 km from the Macondo well, including seven sites previously visited in September 2009, where the corals and communities appeared unchanged. However, at one site 11 km southwest of the Macondo well, coral colonies presented widespread signs of stress, including varying degrees of tissue loss, sclerite enlargement, excessmucous production, bleached commensal ophiuroids, and covering by brown flocculent material (floc). On the …

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Protein Dynamics And Ion Traffic In Bacterioferritin, Huan Rui, Mario Rivera, Wonpil Im Dec 2012

Protein Dynamics And Ion Traffic In Bacterioferritin, Huan Rui, Mario Rivera, Wonpil Im

Faculty Publications

Bacterioferritin (Bfr) is a spherical protein composed of 24 subunits and 12 heme molecules. Bfrs contribute to regulate iron homeostasis in bacteria by capturing soluble but potentially toxic Fe2+ and by compartmentalizing it in the form of a bioavailable ferric mineral inside the protein's hollow cavity. When iron is needed, Fe3+ is reduced and mobilized into the cytosol as Fe2+. Hence, key to the function of Bfr is its ability to permeate iron ions in and out of its interior cavity, which is likely imparted by a flexible protein shell. To examine the conformational flexibility of Bfrs in a native-like …

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Patent Assertion Entities, Colleen Chien Dec 2012

Patent Assertion Entities, Colleen Chien

Faculty Publications

The DOJ and FTC held a workshop on patent assertion entities on Dec 10 2012. This talk gives an overview of the economics, policy of patent assertion entities drawing upon previous and new empirical work. Using pathbreaking, disruptive techniques and capturing economies of scale, PAEs drive down the cost of patent enforcement. PAEs brought 61% of all patent litigations in 2012, representing fewer defendants than in 2011, because of changes in the patent law. 76% of PAE defendants were sued by a PAE that sued more than 15 defendants, and 61% were sued by a PAE that had brought 8 …

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Quantum-Secured Imaging, Mehul Malik, Omar S. Magaña-Loaiza, Robert W. Boyd Dec 2012

Quantum-Secured Imaging, Mehul Malik, Omar S. Magaña-Loaiza, Robert W. Boyd

Faculty Publications

We have built an imaging system that uses a photon's position or time-of-flight information to image an object, while using the photon's polarization for security. This ability allows us to obtain an image which is secure against an attack in which the object being imaged intercepts and resends the imaging photons with modified information. Popularly known as "jamming," this type of attack is commonly directed at active imaging systems such as radar. In order to jam our imaging system, the object must disturb the delicate quantum state of the imaging photons, thus introducing statistical errors that reveal its activity. © …

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The Chara Array Angular Diameter Of Hr 8799 Favors Planetary Masses For Its Imaged Companions, Ellyn K. Baines, Russel J. White, Daniel Huber, Jeremy Jones, Tabetha Boyajian, Harold A. Mcalister, Theo A. Ten Brummelaar, Nils H. Turner, Judit Sturmann, Laszlo Sturmann, P. J. Goldfinger, Christopher D. Farrington, Adric R. Riedel, Michael Ireland, Kaspar Von Braun, Stephen T. Ridgway Dec 2012

The Chara Array Angular Diameter Of Hr 8799 Favors Planetary Masses For Its Imaged Companions, Ellyn K. Baines, Russel J. White, Daniel Huber, Jeremy Jones, Tabetha Boyajian, Harold A. Mcalister, Theo A. Ten Brummelaar, Nils H. Turner, Judit Sturmann, Laszlo Sturmann, P. J. Goldfinger, Christopher D. Farrington, Adric R. Riedel, Michael Ireland, Kaspar Von Braun, Stephen T. Ridgway

Faculty Publications

HR 8799 is an hF0 mA5 γ Doradus-, λ Bootis-, Vega-type star best known for hosting four directly imaged candidate planetary companions. Using the CHARA Array interferometer, we measure HR 8799's limb-darkened angular diameter to be 0.342 ± 0.008 mas (an error of only 2%). By combining our measurement with the star's parallax and photometry from the literature, we greatly improve upon previous estimates of its fundamental parameters, including stellar radius (1.44 ± 0.06 R⊙), effective temperature (7193 ± 87 K, consistent with F0), luminosity (5.05 ± 0.29 L ⊙), and the extent of the habitable zone (HZ; 1.62-3.32 AU). …

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Mother Knows Best? Inhibitory Maternal Gatekeeping, Psychological Control, And The Mother–Adolescent Relationship, Erin Kramer Holmes, Kaylee C. Dunn, James P. Harper, W. Justin Dyer, Randal D. Day Dec 2012

Mother Knows Best? Inhibitory Maternal Gatekeeping, Psychological Control, And The Mother–Adolescent Relationship, Erin Kramer Holmes, Kaylee C. Dunn, James P. Harper, W. Justin Dyer, Randal D. Day

Faculty Publications

We used structural equation modeling to explore associations between inhibitory maternal gatekeeping attitudes, reports of inhibitory maternal gatekeeping behaviors, maternal psychological control, observed mother–adolescent warmth, and adolescent reports of maternal involvement. Our random stratified sample consisted of 315 mothers and their adolescents. Results revealed that inhibitory maternal gatekeeping attitudes were positively associated with reports of inhibitory gatekeeping behaviors. Psychological control fully mediated the relationship between inhibitory gatekeeping attitudes, reports of inhibitory gatekeeping behaviors, and adolescent reports of maternal involvement. Though gatekeeping attitudes and behaviors were not associated with observed mother–adolescent warmth, psychological control was negatively associated with observed mother–adolescent warmth. …

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Impact Of Margin Size On The Predicted Risk Of Radiogenic Second Cancers Following Proton Arc Therapy And Volumetric Modulated Arc Therapy For Prostate Cancer, Laura A. Rechner, Rebecca M. Howell, Rui Zhang, Wayne D. Newhauser Dec 2012

Impact Of Margin Size On The Predicted Risk Of Radiogenic Second Cancers Following Proton Arc Therapy And Volumetric Modulated Arc Therapy For Prostate Cancer, Laura A. Rechner, Rebecca M. Howell, Rui Zhang, Wayne D. Newhauser

Faculty Publications

We previously determined that the predicted risk of radiogenic second cancer in the bladder and rectum after proton arc therapy (PAT) was less than or equal to that after volumetric modulated arc therapy (VMAT) with photons, but we did not consider the impact of margin size on that risk. The current study was thus conducted to evaluate margin size's effect on the predicted risks of second cancer for the two modalities and the relative risk between them. Seven treatment plans with margins ranging from 0 mm in all directions to 6 mm posteriorly and 8 mm in all other directions …

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Quantum Trade-Off Coding For Bosonic Communication, Mark M. Wilde, Patrick Hayden, Saikat Guha Dec 2012

Quantum Trade-Off Coding For Bosonic Communication, Mark M. Wilde, Patrick Hayden, Saikat Guha

Faculty Publications

The trade-off capacity region of a quantum channel characterizes the optimal net rates at which a sender can communicate classical, quantum, and entangled bits to a receiver by exploiting many independent uses of the channel, along with the help of the same resources. Similarly, one can consider a trade-off capacity region when the noiseless resources are public, private, and secret-key bits. We identified [see Wilde, Hayden, and Guha, Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.108.140501 108, 140501 (2012)] these trade-off rate regions for the pure-loss bosonic channel and proved that they are optimal provided that a long-standing minimum-output entropy conjecture is true. Additionally, we …

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Dissolved Organic Matter Composition And Bioavailability Reflect Ecosystem Productivity In The Western Arctic Ocean, Yuan Shen, Cedric Fichot, Ronald Benner Dec 2012

Dissolved Organic Matter Composition And Bioavailability Reflect Ecosystem Productivity In The Western Arctic Ocean, Yuan Shen, Cedric Fichot, Ronald Benner

Faculty Publications

Dissolved organic carbon (DOC) and total dissolved amino acids (TDAA) were measured in high (Chukchi Sea) and low (Beaufort Sea) productivity regions of the western Arctic Ocean to investigate the composition and bioavailability of dissolved organic matter (DOM). Concentrations and DOC-normalized yields of TDAA in Chukchi surface waters were relatively high, indicating an accumulation of bioavailable DOM. High concentrations and yields of TDAA were also observed in the upper halocline of slope and basin waters, indicating off-shelf transport of bioavailable DOM from the Chukchi Sea. In contrast, concentrations and yields of TDAA in Beaufort surface waters were relatively low, indicting …

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