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Deb Cotton Secondline Collection
by BigRedCotton
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Gonna talk to Nagin and give him a piece of my mind - gimme my projects back! Source: https://www.youtube.com/watch?v=zVRvdBUhVv0 Uploader: BigRedCotton Upload date: 20110404
Topics: Youtube, video, Music, To Be Continued Brass Band, New Orleans, TBC Brass Band, Ray Nagin,...
General Motors
by Duke University Libraries
movies

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Food and Beverage
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Ocusol
by Duke University Libraries
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Health and Beauty
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Source: 3e9d09e8-01f5-48a4-a1ca-a2ad52fbfbd
Deb Cotton Secondline Collection
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Source: https://www.youtube.com/watch?v=T5Dx-BHUf5c Uploader: BigRedCotton Upload date: 20110104
Topics: Youtube, video, Entertainment, Second Line, Brass Band, New Orleans, Buckjumping, Hot 8 Brass Band,...
Deb Cotton Secondline Collection
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featuring the Youngfellas Brass Band Source: https://www.youtube.com/watch?v=VcVQAgNkQ-4 Uploader: BigRedCotton Upload date: 20111129
Topics: Youtube, video, Entertainment, Youngfellas Brass Band, New Orleans, Second Line Parade, Junior...
Deb Cotton Secondline Collection
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Source: https://www.youtube.com/watch?v=1cYJzBHWq4U Uploader: BigRedCotton Upload date: 20110117
Topics: Youtube, video, Entertainment, dance, second line parade, New Orleans, Ninth Ward, TBC Brass Band,...
Source: https://www.youtube.com/watch?v=QsnPY5q4-FM Uploader: BigRedCotton Upload date: 20110107
Topics: Youtube, video, Music, To Be Continued Brass Band, TBC Brass Band, New Orleans, Ninth Ward, Stooges...
L-R: Kristen Chadwick, Beth Willhite, and Holly Kearns investigate root diseases at Indian Henry Campground. Mt. Hood National Forest, Oregon. Photo by: Unknown Date: October 7, 2011 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:...
Topics: r6, usda, stateandprivateforestry, foresthealth, region6, forestpathologist, mthoodnationalforest,...
Internet Archive Photo and Video Collection
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Arxiv.org
by Melanie Matchett Wood
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We give a bijection between binary quartic forms and quartic rings with a monogenic cubic resolvent ring, relating the rings associated to binary quartic forms with Bhargava's cubic resolvent rings. This gives a parametrization of quartic rings with monogenic cubic resolvents. We also give a geometric interpretation of this parametrization.
Source: http://arxiv.org/abs/1007.5501v2
Arxiv.org
by Gábor Ivanyos; François Le Gall; Yuichi Yoshida
texts

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A result of Ben-Or, Coppersmith, Luby and Rubinfeld on testing whether a map be two groups is close to a homomorphism implies a tight lower bound on the distance between the multiplication tables of two non-isomorphic groups.
Source: http://arxiv.org/abs/1107.0133v2
Arxiv.org
by Yukitoshi Motome; Kyoya Nakamikawa; Youhei Yamaji; Masafumi Udagawa
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We investigate the ground state of the Kondo necklace model on geometrically-frustrated lattices by the variational Monte Carlo simulation. To explore the possibility of a partially-ordered phase, we employ an extension of the Yosida-type wave function as a variational state, which can describe a coexistence of spin-singlet formation due to the Kondo coupling and magnetic ordering by the Ruderman-Kittel-Kasuya-Yosida interaction. We show the benchmark of the numerical simulation to demonstrate...
Source: http://arxiv.org/abs/1107.2987v1
Arxiv.org
by Cristian Ortiz
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In this work we study B-field transformations of multiplicative Poisson bivectors on a Lie groupoid G. We are concerned with B-fields given by multiplicative closed 2-forms on G. We view Poisson groupoids and their B-field symmetries as special instances of multiplicative Dirac structures. These are geometric structures that unify both multiplicative Poisson bivectors and multiplicative closed 2-forms. This allows us to extend results of Bursztyn and Radko on gauge transformations of...
Source: http://arxiv.org/abs/1107.3343v3
Arxiv.org
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We present the results of an extensive study of the detectability of Earth-sized planets and super-Earths in the habitable zones of cool and low-mass stars using transit timing variation method. We have considered a system consisting of a star, a transiting giant planet, and a terrestrial-class perturber, and calculated TTVs for different values of the parameters of the system. To identify ranges of the parameters for which these variations would be detectable by Kepler, we considered the...
Source: http://arxiv.org/abs/1107.2885v1
Arxiv.org
by Yu-Liang Yan; Gang Chen; Xiao-Mei Li; Dai-Mei Zhou; Mei-Juan Wang; Shou-Yang Hu; Li Ye; Ben-Hao Sa
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A dynamically constrained coalescence model based on the phase space quantization and classical limit method was proposed to investigate the production of light nuclei (anti-nuclei) in non-single diffractive (NSD) pp collisions at $\sqrt{s}$=7 and 14 TeV. This calculation was based on the final hadronic state in the PYTHIA and PACIAE model simulations, the event sample consisted of 1.2$\times 10^8$ events in both simulations. The PACIAE model calculated $\bar D$ yield of 6.247$\times 10^{-5}$...
Source: http://arxiv.org/abs/1107.3207v1
Arxiv.org
by V. Tsurkan; J. Deisenhofer; A. Günther; H. -A. Krug von Nidda; S. Widmann; A. Loidl
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We report the crystal growth and structural, magnetic, conductivity, and specific heat investigations of Rb(1-x)Fe(2-y)Se2 single crystals with varying stoichiometry prepared by self-flux and Bridgman methods. The system exhibits a strongly anisotropic antiferromagnetic behavior below 400 K. For 1.53 1.6 insulating and semiconducting behavior is observed, respectively. The sharpest transition to the superconducting state and the highest transition temperature T_c of 32.4 K is found for...
Source: http://arxiv.org/abs/1107.3932v2
Arxiv.org
by Julien Baglio; Abdelhak Djouadi; Rohini Godbole
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In this note, we respond to the comments and criticisms made by the representatives of the CDF and D0 collaborations on our recent papers in which we point out that the theoretical uncertainties in the Higgs production cross section have been largely un- derestimated and, if properly taken into account, will significantly loosen the Tevatron Higgs exclusion bounds. We show that our approach to the theoretical uncertainties is reasonable and fully justified. In particular, we show that our...
Source: http://arxiv.org/abs/1107.0281v1
Arxiv.org
by Jean-François Coeurjolly; Hedi Kortas
texts

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In this paper, we introduce a new class of estimators of the Hurst exponent of the fractional Brownian motion (fBm) process. These estimators are based on sample expectiles of discrete variations of a sample path of the fBm process. In order to derive the statistical properties of the proposed estimators, we establish asymptotic results for sample expectiles of subordinated stationary Gaussian processes with unit variance and correlation function satisfying $\rho(i)\sim \kappa|i|^{-\alpha}$...
Source: http://arxiv.org/abs/1107.0540v1
Arxiv.org
by S. Nandi; Y. Su; Y. Xiao; S. Price; X. F. Wang; X. H. Chen; J. Herrero-Martín; C. Mazzoli; H. C. Walker; L. Paolasini; S. Francoual; D. K. Shukla; J. Strempfer; T. Chatterji; C. M. N. Kumar; R. Mittal; H. M. Rønnow; Ch. Rüegg; D. F. McMorrow; Th. Brückel
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The magnetic structures adopted by the Fe and Sm sublattices in SmFeAsO have been investigated using element specific x-ray resonant and non-resonant magnetic scattering techniques. Between 110 and 5 K, the Sm and Fe moments are aligned along the c and a directions, respectively according to the same magnetic representation $\Gamma_{5}$ and the same propagation vector (1, 0, 0.5). Below 5 K, magnetic order of both sublattices change to a different magnetic structure and the Sm moments reorder...
Source: http://arxiv.org/abs/1107.1778v1
Arxiv.org
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We present the first observations of emission lines of CN(2-1), HCO$^{+}$(3-2) and C$_{2}$H(3-2) in the Perseus cluster. We observed at two positions: directly at the central galaxy, NGC 1275 and also at a position about 20$''$ to the east where associated filamentary structure has been shown to have strong CO emission. Clear detections in CN and HCO$^{+}$ transitions and a weak detection of the C$_{2}$H transition were made towards NGC 1275, while weak detections of CN and HCO$^{+}$ were made...
Source: http://arxiv.org/abs/1107.2269v1
Arxiv.org
by Jordi Jose; Christian Iliadis
texts

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Half a century has passed since the foundation of nuclear astrophysics. Since then, this discipline has reached its maturity. Today, nuclear astrophysics constitutes a multidisciplinary crucible of knowledge that combines the achievements in theoretical astrophysics, observational astronomy, cosmochemistry and nuclear physics. New tools and developments have revolutionized our understanding of the origin of the elements: supercomputers have provided astrophysicists with the required...
Source: http://arxiv.org/abs/1107.2234v1
Arxiv.org
by Daniele De Martino; Matteo Figliuzzi; Andrea De Martino; Enzo Marinari
texts

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The analysis of non-equilibrium steady states of biochemical reaction networks relies on finding the configurations of fluxes and chemical potentials satisfying stoichiometric (mass balance) and thermodynamic (energy balance) constraints. Efficient methods to explore such states are crucial to predict reaction directionality, calculate physiologic ranges of variability, estimate correlations, and reconstruct the overall energy balance of the network from the underlying molecular processes....
Source: http://arxiv.org/abs/1107.2330v1
Arxiv.org
by Andreas C. Damianou; Michalis K. Titsias; Neil D. Lawrence
texts

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High dimensional time series are endemic in applications of machine learning such as robotics (sensor data), computational biology (gene expression data), vision (video sequences) and graphics (motion capture data). Practical nonlinear probabilistic approaches to this data are required. In this paper we introduce the variational Gaussian process dynamical system. Our work builds on recent variational approximations for Gaussian process latent variable models to allow for nonlinear...
Source: http://arxiv.org/abs/1107.4985v1
Arxiv.org
by Shahid M. Shah; Vireshwar Kumar; Vinod Sharma
texts

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We consider a two user fading Multiple Access Channel with a wire-tapper (MAC-WT) where the transmitter has the channel state information (CSI) to the intended receiver but not to the eavesdropper (eve). We provide an achievable secrecy sum-rate with optimal power control. We next provide a secrecy sum-rate with optimal power control and cooperative jamming (CJ). We then study an achievable secrecy sum rate by employing an ON/OFF power control scheme which is more easily computable. We also...
Source: http://arxiv.org/abs/1107.5123v2
Arxiv.org
texts

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In this paper we describe the inelastic character of solitons of some slowly varying gKdV equations. We give precise lower bounds, in the energy space, of the defect induced by the potential on the solution as time goes to infinite. For the proof, we consider suitable Lyapunov functionals that propagate the defect along the dynamics in a non trivial fashion, in the spirit of the recent breakthroughs made by Martel and Merle in the case of the two soliton collision for non integrable gKdV...
Source: http://arxiv.org/abs/1107.5328v1
Arxiv.org
by Symeon Chatzinotas; Bjorn Ottersten
texts

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Multicell joint processing has been proven to be very efficient in overcoming the interference-limited nature of the cellular paradigm. However, for reasons of practical implementation global multicell joint decoding is not feasible and thus clusters of cooperating Base Stations have to be considered. In this context, intercluster interference has to be mitigated in order to harvest the full potential of multicell joint processing. In this paper, four scenarios of intercluster interference are...
Source: http://arxiv.org/abs/1007.4112v2
Arxiv.org
by Bertrand Boisvert; Louis Féraud; Sergei Soloviev
texts

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This paper deals with model transformation based on attributed graph rewriting. Our contribution investigates a single pushout approach for applying the rewrite rules. The computation of graph attributes is obtained through the use of typed lambda-calculus with inductive types. In this paper we present solutions to cope with single pushout construction for the graph structure and the computations functions. As this rewrite system uses inductive types, the expressiveness of attribute...
Source: http://arxiv.org/abs/1107.0065v1
Arxiv.org
by D. N. Triantafyllopoulos
texts

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We discuss the production of forward jets in high energy processes where one probes a dense hadronic wavefunction. In particular, and as a signature of parton saturation, we discuss the possibility of a strong momentum decorrelation in Mueller-Navelet jets which leads to a geometric scaling behavior.
Source: http://arxiv.org/abs/1107.1269v1
Arxiv.org
by Kate A. Ross; Lucile Savary; Bruce D. Gaulin; Leon Balents
texts

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Recent work has highlighted remarkable effects of classical thermal fluctuations in the dipolar spin ice compounds, such as "artificial magnetostatics", manifesting as Coulombic power-law spin correlations and particles behaving as diffusive "magnetic monopoles". In this paper, we address quantum spin ice, giving a unifying framework for the study of magnetism of a large class of magnetic compounds with the pyrochlore structure, and in particular discuss Yb2Ti2O7 and extract...
Source: http://arxiv.org/abs/1107.0761v1
Arxiv.org
texts

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We treat the stationary (cubic) nonlinear Schr\"odinger equation (NSLE) on simplest graphs. Formulation of the problem and exact analytical solutions of NLSE are presented for star graphs consisting of three bonds. It is shown that the method can be extended for the case of arbitrary number of bonds of star graphs and for other simplest topologies such as tree and loop graphs. The case of repulsive and attractive nonlinearities are treated separately.
Source: http://arxiv.org/abs/1107.1220v3
Arxiv.org
by Michele Tumminello; Fabrizio Lillo; Jyrki Piilo; Rosario N. Mantegna
texts

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We use statistically validated networks, a recently introduced method to validate links in a bipartite system, to identify clusters of investors trading in a financial market. Specifically, we investigate a special database allowing to track the trading activity of individual investors of the stock Nokia. We find that many statistically detected clusters of investors show a very high degree of synchronization in the time when they decide to trade and in the trading action taken. We investigate...
Source: http://arxiv.org/abs/1107.3942v1
Deb Cotton Secondline Collection
movies

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Big Shot Mardi Gras 2012 is Terry Williams Source: https://www.youtube.com/watch?v=1KXR6Vkvuu8 Uploader: BigRedCotton Upload date: 20110531
Topics: Youtube, video, Entertainment, New Orleans, Big Shot, TBC Brass Band, To Be Continued Brass Band,...
Radio Ecoshock
by Radio Ecoshock
audio

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American activist and author Bill McKibben explains growing climate crisis. Says we must act, even if it seems too late. Selections from speech and Q and A in Vancouver, Canada at UBC April 9, 2011. Fukushima nuclear accident must not take our eyes off climate wrecking. Via The Vancouver Institute, recorded by Alex Smith. Radio Ecoshock 110422 1 hour. Visit Radio Ecoshock
Topics: environment, climate, climate change, global warming, activism, Bill McKibben, speech, Vancouver,...
Jwax Polisher
by Duke University Libraries
movies

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Consumer Goods and Services
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Spectrocin T
by Duke University Libraries
movies

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Health and Beauty
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Camay
by Duke University Libraries
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Health and Beauty
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Yuban
by Duke University Libraries
movies

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Food and Beverage
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Pampers
by Duke University Libraries
movies

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Health and Beauty
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Gravy Train
by Duke University Libraries
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Food and Beverage
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Vicks
by Duke University Libraries
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Health and Beauty
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Vicks
by Duke University Libraries
movies

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Health and Beauty
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Hasbro
by Duke University Libraries
movies

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Amusement and Entertainment
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Oat Flakes
by Duke University Libraries
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Food and Beverage
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Texaco
by Duke University Libraries
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Transportation and Travel
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Raisin Bran
by Duke University Libraries
movies

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Food and Beverage
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Sara Lee
by Duke University Libraries
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Food and Beverage
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Arxiv.org
by Huaixiu Zheng; Daniel J. Gauthier; Harold U. Baranger
texts

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The manipulation of individual, mobile quanta is a key goal of quantum communication; to achieve this, nonlinear phenomena in open systems can play a critical role. We show theoretically that a variety of strong quantum nonlinear phenomena occur in a completely open one-dimensional waveguide coupled to an N-type four-level system (4LS). We focus on photon blockade and the creation of single photon states in the absence of a cavity. Many-body bound states appear due to the strong photon-photon...
Source: http://arxiv.org/abs/1107.0309v2
Arxiv.org
by Maxime Dion; Charles Gale; Sangyong Jeon; Jean-Francois Paquet; Bjoern Schenke; Clint Young
texts

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We study real photons produced in heavy ion collisions at RHIC, and we calculate their spectrum and its azimuthal momentum anisotropy. The photons from a variety of sources are included, and the interplay and the time-evolution of those sources are modelled in a full 3D hydrodynamic simulation. We quantify the v_2 of thermal photons produced in ideal and viscous fluids, and the consequences of using different initial conditions are explored.
Source: http://arxiv.org/abs/1107.0889v1
Arxiv.org
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We review a result obtained with Andrew Ledoan and Marco Merkli. Consider a random analytic function $f(z) = \sum_{n=0}^{\infty} a_n X_n z^n$, where the $X_n$'s are i.i.d., complex valued random variables with mean zero and unit variance, and the coefficients $a_n$ are non-random and chosen so that the variance transforms covariantly under conformal transformations of the domain. If the $X_n$'s are Gaussian, this is called a Gaussian analytic function (GAF). We prove that, even if the...
Source: http://arxiv.org/abs/1107.4135v1
Arxiv.org
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The strong coupling of rho meson to the nucleon produces $s$ and $p$ wave rho meson nucleon $(\rho N)$ resonances. In a nucleus, the $\rho N$ resonance-hole polarization generates the optical potential or self-energy for the rho meson. The scattering of rho meson due to this potential provides valuable informations about the $\rho N$ resonance dynamics in a nucleus. To investigate it, we use this potential to calculate the mass distribution spectrum for the $\rho$ meson produced coherently in...
Source: http://arxiv.org/abs/1005.0187v2
Arxiv.org
by Abuzer Yakaryilmaz; A. C. Cem Say
texts

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We prove the following facts about the language recognition power of quantum Turing machines (QTMs) in the unbounded error setting: QTMs are strictly more powerful than probabilistic Turing machines for any common space bound $ s $ satisfying $ s(n)=o(\log \log n) $. For "one-way" Turing machines, where the input tape head is not allowed to move left, the above result holds for $s(n)=o(\log n) $. We also give a characterization for the class of languages recognized with unbounded...
Source: http://arxiv.org/abs/1007.3624v2
Arxiv.org
by Matthias Kleinmann; Otfried Gühne; José R. Portillo; Jan-Åke Larsson; Adán Cabello
texts

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The simulation of quantum effects requires certain classical resources, and quantifying them is an important step in order to characterize the difference between quantum and classical physics. For a simulation of the phenomenon of state-independent quantum contextuality, we show that the minimal amount of memory used by the simulation is the critical resource. We derive optimal simulation strategies for important cases and prove that reproducing the results of sequential measurements on a...
Source: http://arxiv.org/abs/1007.3650v2
Deb Cotton Secondline Collection
movies

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Source: https://www.youtube.com/watch?v=IDu7rzy3q5A Uploader: BigRedCotton Upload date: 20110209
Topics: Youtube, video, Entertainment, Treme, New Orleans, Rebirth Brass Band, Sixth Ward, 6th Ward, Second...
Greg Filip, regional forest pathologist, leading a danger tree discussion. Danger Tree Training. Wind River, Washington. For a 2010 Powerpoint presentation about the R6 Danger Tree training program, see: www.fs.fed.us/foresthealth/technology/htwc/2010/Docs/03-F... Photo by: Kristen Chadwick Date: May 18, 2011 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy,...
Topics: training, usda, stateandprivateforestry, usfs, r6, giffordpinchotnationalforest, forestpathologist,...
L-R: Beth Willhite, Kristen Chadwick, and Holly Kearns (Westside Forest Insect and Disease Service Center) investigating blowdown at Indian Henry Campground. Mt. Hood National Forest, Oregon. Photo by: Unknown Date: October 7, 2011 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. Image provided by USDA Forest Service, Region 6, State and...
Topics: r6, usda, stateandprivateforestry, recreation, foresthealth, region6, forestpathologist,...
Arxiv.org
by Matthias Lesch; Boris Vertman
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We consider Sturm-Liouville operators on the line segment [0, 1] with general regular singular potentials and separated boundary conditions. We establish existence and a formula for the associated zeta-determinant in terms of the Wronski- determinant of a fundamental system of solutions adapted to the boundary conditions. This generalizes the earlier work of the first author, treating general regular singular potentials but only the Dirichlet boundary conditions at the singular end, and the...
Source: http://arxiv.org/abs/1005.0368v3
Arxiv.org
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A sequence $x_1,...,x_n,...$ of discrete-valued observations is generated according to some unknown probabilistic law (measure) $\mu$. After observing each outcome, it is required to give the conditional probabilities of the next observation. The realizable case is when the measure $\mu$ belongs to an arbitrary but known class $C$ of process measures. The non-realizable case is when $\mu$ is completely arbitrary, but the prediction performance is measured with respect to a given set $C$ of...
Source: http://arxiv.org/abs/1005.5603v2
Arxiv.org
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In this paper, we give an isotopy classification of 3-bridge spheres of 3-bridge arborescent links, which are not Montesinos links. To this end, we prove a certain refinement of a theorem of J.S. Birman and H.M. Hilden on the relation between bridge presentations of links and Heegaard splittings of 3-manifolds. In the proof of this result, we also give an answer to a question by K. Morimoto on the classification of genus-2 Heegaard splittings of certain graph manifolds.
Source: http://arxiv.org/abs/1107.1112v1
Arxiv.org
by Marco Farina; Duccio Pappadopulo; Alessandro Strumia; Tomer Volansky
texts

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We explore the dark matter interpretation of the anomalies claimed by the DAMA and CoGeNT experiments, in conjunction with the various null direct-detection experiments. An independent analysis of the CoGeNT data is employed and several experimental and astrophysical uncertainties are considered. Various phenomenological models are studied, including isospin violating interactions, momentum-dependent form factors, velocity-dependent form factors, inelastic scatterings (endothermic and...
Source: http://arxiv.org/abs/1107.0715v2
Arxiv.org
by Eric S. Perlman; Markos Georganopoulos; Herman L. Marshall; Daniel A. Schwartz; C. A. Padgett; Jonathan Gelbord; J. E. J. Lovell; Diana M. Worrall; Mark Birkinshaw; David W. Murphy; David L. Jauncey
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We present deep {\it HST, Chandra, VLA} and {\it ATCA} images of the jets of PKS 0208--512 and PKS 1202--262, which were found in a {\it Chandra} survey of a flux-limited sample of flat-spectrum radio quasars with jets (see Marshall et al., 2005). We discuss in detail their X-ray morphologies and spectra. We find optical emission from one knot in the jet of PKS 1202--262 and two regions in the jet of PKS 0208--512. The X-ray emission of both jets is most consistent with external Comptonization...
Source: http://arxiv.org/abs/1107.2058v1
Arxiv.org
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We show that in the grounded conducting sphere image problem, all the necessary information about the image charge can be found from a mirror equation and a magnification formula. Then, we propose a method to solve the image problem for an extended charge distribution near a grounded conducting sphere.
Source: http://arxiv.org/abs/1107.3885v1
Arxiv.org
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In the scenario of cold electroweak baryogenesis, oscillations of the Higgs field lead to metastable domains of unbroken phase where the Higgs field nearly vanishes. Those domains have also been identified with the $W-t-\bar{t}$ bags, a non-topological soliton made of large number ($\sim 1000$) of gauge quanta and heavy (top and anti-top) quarks. As real-time numerical studies had shown, sphalerons (topological transition events violating the baryon number) occur only inside those bags. In this...
Source: http://arxiv.org/abs/1107.4060v1
Arxiv.org
by K. A. Matveev; A. V. Andreev
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We study how a Luttinger liquid of spinless particles in one dimension approaches thermal equilibrium. Full equilibration requires processes of backscattering of excitations which occur at energies of order of the bandwidth. Such processes are not accounted for by the Luttinger liquid theory. We treat the high-energy excitations as mobile impurities and derive an expression for the equilibration rate in terms of their spectrum. Our results apply at any interaction strength.
Source: http://arxiv.org/abs/1107.4116v1
Arxiv.org
by Gerrit E. W. Bauer
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This is a brief overview of the state of the art of spin caloritronics, the science and technology of controlling heat currents by the electron spin degree of freedom (and vice versa).
Source: http://arxiv.org/abs/1107.4395v1
Arxiv.org
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In this paper we deal with verification of safety properties of parameterized systems with a tree topology. The verification problem is translated to a purely logical problem of finding a finite countermodel for a first-order formula, which further resolved by a generic finite model finding procedure. A finite countermodel method is shown is at least as powerful as regular tree model checking and as the methods based on monotonic abstraction and backwards symbolic reachability. The practical...
Source: http://arxiv.org/abs/1107.5142v1
Arxiv.org
by Naveed Yaqoob
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In this paper, the notion of bipolar-valued fuzzy LA-subsemigroups is introduced and also some properties of bipolar-valued fuzzy left (right, bi-, interior) ideals of LA-semigroups has been discussed.
Source: http://arxiv.org/abs/1107.4559v1
Arxiv.org
by J. H. Grönqvist; T. Stroucken; G. Berghäuser; S. W. Koch
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The exciton Wannier equation for graphene is solved for different background dielectric constants. It is shown that freestanding graphene features strong Coulomb effects with a very large exciton binding energy exceeding $3\,$eV. A second-order transition to a weak Coulomb regime is found if the effective background dielectric constant exceeds a critical value. All bound-state solutions vanish for epitaxial graphene on a substrate with large background permittivity, such as SiC.
Source: http://arxiv.org/abs/1107.5653v1
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by Paul Dupuis; Konstantinos Spiliopoulos; Hui Wang
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We construct importance sampling schemes for stochastic differential equations with small noise and fast oscillating coefficients. Standard Monte Carlo methods perform poorly for these problems in the small noise limit. With multiscale processes there are additional complications, and indeed the straightforward adaptation of methods for standard small noise diffusions will not produce efficient schemes. Using the subsolution approach we construct schemes and identify conditions under which the...
Source: http://arxiv.org/abs/1107.5448v1
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We consider some measure-theoretic properties of functions belonging to a Sobolev-type class on metric measure spaces that admit both a Poincar\'e inequality and are equipped with a doubling measure. The properties we have selected to study are those that are closely related to area and coarea formulas. We present these formulas for Newton-Sobolev functions in the abstract metric setting.
Source: http://arxiv.org/abs/0807.2233v3
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Acyclicity of individual preferences is a minimal assumption in social choice theory. We replace that assumption by the direct assumption that preferences have maximal elements on a fixed agenda. We show that the core of a simple game is nonempty for all profiles of such preferences if and only if the number of alternatives in the agenda is less than the Nakamura number of the game. The same is true if we replace the core by the core without majority dissatisfaction, obtained by deleting from...
Source: http://arxiv.org/abs/1107.0431v1
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Considered herein is the initial-value problem for the generalized periodic Camassa-Holm equation which is related to the Camassa-Holm equation and the Hunter-Saxton equation. Sufficient conditions guaranteeing the development of breaking waves in finite time are demonstrated. On the other hand, the existence of strong permanent waves is established with certain initial profiles depending on the linear dispersive parameter in a range of the Sobolev spaces. Moreover, the admissible global weak...
Source: http://arxiv.org/abs/1107.3191v2
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by E. Verhagen; S. Deléglise; S. Weis; A. Schliesser; T. J. Kippenberg
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Quantum control of engineered mechanical oscillators can be achieved by coupling the oscillator to an auxiliary degree of freedom, provided that the coherent rate of energy exchange exceeds the decoherence rate of each of the two sub-systems. We achieve such quantum-coherent coupling between the mechanical and optical modes of a micro-optomechanical system. Simultaneously, the mechanical oscillator is cooled to an average occupancy of n = 1.7 \pm 0.1 motional quanta. Pulsed optical excitation...
Source: http://arxiv.org/abs/1107.3761v1
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by Goran Senjanovic
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Ever since the Majorana classic work, the nature of neutrino has been one of the central questions of the weak interaction physics. If neutrino is its own antiparticle, the immediate consequence is lepton number violation through the neutrinoless double beta decay. However, colliders such as the LHC offer a hope of seeing directly the same phenomenon, and moreover the Majorana nature of new particles needed to complete the Standard Model. I review here the salient features of these phenomena,...
Source: http://arxiv.org/abs/1107.5322v1
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We characterize two-weight inequalities for certain maximal truncations of the Hilbert transform in terms of testing conditions on simpler functions. For 1
Source: http://arxiv.org/abs/0807.0246v8
Deb Cotton Secondline Collection
by BigRedCotton
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featuring Hot 8 Brass Band Source: https://www.youtube.com/watch?v=G8xw10wLaC4 Uploader: BigRedCotton Upload date: 20111017
Topics: Youtube, video, Entertainment, Hot 8 Brass Band, New Orleans, second line parade, debcotton,...
Deb Cotton Secondline Collection
by BigRedCotton
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Sidewalk masters getting it in, 'Sweet Feet' from Single Ladies SA&PC with the Free Agents Brass Band Source: https://www.youtube.com/watch?v=qIaaJdqH63w Uploader: BigRedCotton Upload date: 20110412
Topics: Youtube, video, Music, Free Agents Brass Band, New Orleans, Second Line Parade, debcotton,...
Arxiv.org
by J. A. Aguilar-Saavedra; M. Perez-Victoria
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We study different profiles of the distribution of the top forward-backward asymmetry, depending on the invariant mass of the t tbar pair. We show that they can be reproduced by one or more light colour octets, while keeping moderate departures of the t tbar cross section and invariant mass distributions with respect to the Standard Model predictions at Tevatron and LHC.
Source: http://arxiv.org/abs/1107.2120v2
Arxiv.org
by Przemyslaw Woznowski; Alun Preece
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Rule-Based Systems have been in use for decades to solve a variety of problems but not in the sensor informatics domain. Rules aid the aggregation of low-level sensor readings to form a more complete picture of the real world and help to address 10 identified challenges for sensor network middleware. This paper presents the reader with an overview of a system architecture and a pilot application to demonstrate the usefulness of a system integrating rules with sensor middleware.
Source: http://arxiv.org/abs/1107.2087v1
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by Carlos J. A. Pires; Alberto Saa; Roberto Venegeroles
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We consider here a recent conjecture stating that correlation functions and tail probabilities of finite time Lyapunov exponents would have the same power law decay in weakly chaotic systems. We demonstrate that this conjecture fails for a generic class of maps of the Pomeau-Manneville type. We show further that, typically, the decay properties of such tail probabilities do not provide significant information on key aspects of weakly chaotic dynamics such as ergodicity and instability regimes....
Source: http://arxiv.org/abs/1107.2077v2
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by Dwight Barkley
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One-dimensional models are presented for transitional shear flows. The models have two variables corresponding to turbulence intensity and mean shear. These variables evolve according to simple equations based on known properties of transitional turbulence. The first model considered is for pipe flow. A previous study modeled turbulence using a chaotic tent map. In the present work turbulence is modeled instead as multiplicative noise. This model captures the character of transitional pipe flow...
Source: http://arxiv.org/abs/1107.3697v1
Arxiv.org
by János pach; József Solymosi; Gábor Tardos
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Extending Furstenberg's ergodic theoretic proof for Szemer\'edi's theorem on arithmetic progressions, Furstenberg and Weiss (2003) proved the following qualitative result. For every d and k, there exists an integer N such that no matter how we color the vertices of a complete binary tree T_N of depth N with k colors, we can find a monochromatic replica of T_d in T_N such that (1) all vertices at the same level in T_d are mapped into vertices at the same level in T_N; (2) if a vertex x of T_d is...
Source: http://arxiv.org/abs/1107.5301v1
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by Dario Benedetti
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It is well known in quantum field theory that the off-shell effective action depends on the gauge choice and field parametrization used in calculating it. Nevertheless, the typical scheme in which the scenario of asymptotically safe gravity is investigated is an off-shell version of the functional renormalization group equation. Working with the Einstein-Hilbert truncation as a test bed, we develop a new scheme for the analysis of asymptotically safe gravity in which the on-shell part of the...
Source: http://arxiv.org/abs/1107.3110v2
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A fast 2-dimensional image reconstruction method is presented, which takes as input 1-dimensional data acquired from scans across a central source in different orientations. The resultant reconstructed images do not show artefacts due to non-uniform coverage in the orientations of the scans across the central source, and are successful in avoiding a high background due to contamination of the flux from the central source across the reconstructed image. Due to the weighting scheme employed this...
Source: http://arxiv.org/abs/1107.0210v1
Arxiv.org
by Davide Faranda; Valerio Lucarini; Giorgio Turchetti; Sandro Vaienti
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We introduce a new dynamical indicator of stability based on the Extreme Value statistics showing that it provides an insight on the local stability properties of dynamical systems. The indicator perform faster than other based on the iteration of the tangent map since it requires only the evolution of the original systems and, in the chaotic regions, gives further information about the information dimension of the attractor. A numerical validation of the method is presented through the...
Source: http://arxiv.org/abs/1107.5972v1
Occupy Wall Street Flickr Archive
by Jon Fowler
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Occupy SeattlenPhotographer: Jon Fowler @xyv nLicensed under Creative Commons Attribution-NonCommercial-ShareAlike License nnNote: I support any peaceful protests and protesters and their right to protest in public spaces. That being said, I am autonomous and independent of Occupy Seattle, Occupy Wall Street, and the Occupy Movement in general. Therefore, feel free to use these pictures in anyway that you see fit (following the guidelines of the stated license) as long as I am not implicated as...
Topics: tent, tents, protestsign, protestsigns, sign, signs, Occupy Seattle, seattle, protest, OWS, occupy,...
Source: http://www.flickr.com/photos/leptonist/6255661170/
Radio Ecoshock
by Alex Smith
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A year after his book "Eaarth", climate activist Bill McKibben with overview of climate crisis. Why we must act, even though we may have "waited too long". Speech to the Vancouver Institute April 9, 2011. 56 min. Second file is Q and A for this speech. Excellent talk with info, humor and drive for activism. Recorded by Alex Smith for Radio Ecoshock. Visit Bill's web site at 350.org
Topics: environment, climate, climate change, global warming, activism, speech, Bill McKibben
Occupy Wall Street Flickr Archive
by Francesco Fiondella
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Demonstrators at Zuccotti Park, a week after the city forcibly evacuated the park and removed all tents.
Topics: protest, #occupywallstreet, demonstrations, financial, liberty plaza, #ows, zuccotti
Source: http://www.flickr.com/photos/fiondella/6409638675/
Occupy Wall Street Flickr Archive
by Lily Rothrock
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Topics: occupysf, occupy, ows, march for human rights, human rights, protest
Source: http://www.flickr.com/photos/lilyrhoads/6489802267/
Occupy Wall Street Flickr Archive
by Victor S.
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Topics: #occupysanjose, #occupysj, #OWS
Source: http://www.flickr.com/photos/9609882@N03/6225895094/
Occupy Wall Street Flickr Archive
by Lily Rothrock
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Topics: occupy oakland, port shut down, #d12, december 12, oakland, protest, occupy, ows, occupy wall...
Source: http://www.flickr.com/photos/lilyrhoads/6503956281/
Deb Cotton Secondline Collection
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I LOVE me some Sandra Hester!!! She is hands down one of the most important figures/leaders/heroines in the history of New Orleans. Here are some articles that sum up the controversy she's commenting on here: http://bit.ly/mwvWLz http://bit.ly/l5Mouy http://bit.ly/gToO4O Source: https://www.youtube.com/watch?v=o4b_zTby2Ao Uploader: BigRedCotton Upload date: 20110705
Topics: Youtube, video, News & Politics, New Orleans, New Orleans City Council, Sandra Wheeler-Hester,...
The Shrink Rap Radio Psychology Podcast
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One in a series of podcasts from Shrink Rap Radio, All the psychology you need to know and just enough to make you dangerous"
Topics: psychology, psychotherapy, counseling, counselor, therapist, psychotherapist, intuition, dreams,...
The Shrink Rap Radio Psychology Podcast
by David Van Nuys, PhD
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One in a series of podcasts from Shrink Rap Radio, All the psychology you need to know and just enough to make you dangerous"
Topics: psychology, psychotherapy, counseling, counselor, therapist, psychotherapist, intuition, dreams,...
Arxiv.org
by Albert Benseny; Joan Bagudà; Xavier Oriols; Jordi Mompart
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We discuss and solve the transport without transit quantum paradox recently introduced in the context of the adiabatic transport of a single particle or a Bose--Einstein condensate between the two extreme traps of a triple-well potential. To this aim, we address the corresponding quantum dynamics in terms of Bohmian trajectories and show that transport always implies transit through the middle well, in full agreement with the quantum continuity equation. This adiabatic quantum transport...
Source: http://arxiv.org/abs/1107.4276v1
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by Preben Gråberg Nes
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In this article we suggest a fast multi-scale edge-detection scheme for medical ultrasound signals. The edge-detector is based on well-known properties of the continuous wavelet trans- form. To achieve both good localization of edges and detect only significant edges, we study the maxima-lines of the wavelet transform. One can obtain the maxima-lines between two scales by computing the wavelet transform at several intermediate scales. To reduce computational effort and time we suggest a...
Source: http://arxiv.org/abs/1107.5186v1
Arxiv.org
by Mahyar Salek; Shahin Shayandeh; David Kempe
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We study the interaction between network effects and external incentives on file sharing behavior in Peer-to-Peer (P2P) networks. Many current or envisioned P2P networks reward individuals for sharing files, via financial incentives or social recognition. Peers weigh this reward against the cost of sharing incurred when others download the shared file. As a result, if other nearby nodes share files as well, the cost to an individual node decreases. Such positive network sharing effects can be...
Source: http://arxiv.org/abs/1107.5559v2
Arxiv.org
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We present two economical one-step error-correction protocols for multipartite polarization-entangled systems in a Greenberger-Horne-Zeilinger state. One uses spatial entanglement to correct errors in the polarization entanglement of an N-photon system, resorting to linear optical elements. The other uses frequency entanglement to correct errors in the polarization entanglement of an N-photon system. The parties in quantum communication can obtain a maximally entangled state from each N-photon...
Source: http://arxiv.org/abs/1107.0093v1
In this paper it will be shown that assuming the Continuum Hypothesis (CH) every nonreflexive Banach space ultrapower is isometrically isomorphic to the space of continuous, bounded and real-valued functions on the Parovicenko space. This Representation Theorem will be helpful in proving some facts from geometry and topology of nonreflexive Banach space ultrapowers.
Source: http://arxiv.org/abs/1107.1693v1
Arxiv.org
by G. Hebrard; T. M. Evans; R. Alonso; M. Fridlund; A. Ofir; S. Aigrain; T. Guillot; J. M. Almenara; M. Auvergne; A. Baglin; P. Barge; A. S. Bonomo; P. Borde; F. Bouchy; J. Cabrera; L. Carone; S. Carpano; C. Cavarroc; Sz. Csizmadia; H. J. Deeg; M. Deleuil; R. F. Diaz; R. Dvorak; A. Erikson; S. Ferraz-Mello; D. Gandolfi; N. Gibson; M. Gillon; E. Guenther; A. Hatzes; M. Havel; L. Jorda; H. Lammer; A. Leger; A. Llebaria; T. Mazeh; C. Moutou; M. Ollivier; H. Parviainen; M. Patzold; D. Queloz; H....
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We report the detection of CoRoT-18b, a massive hot jupiter transiting in front of its host star with a period of 1.9000693 +/- 0.0000028 days. This planet was discovered thanks to photometric data secured with the CoRoT satellite combined with spectroscopic and photometric ground-based follow-up observations. The planet has a mass M_p = 3.47 +/- 0.38 M_Jup, a radius R_p = 1.31 +/- 0.18 R_Jup, and a density rho_p = 2.2 +/- 0.8 g/cm3. It orbits a G9V star with a mass M_* = 0.95 +/- 0.15 M_Sun, a...
Source: http://arxiv.org/abs/1107.2032v2
Arxiv.org
by Joel George Manathara; Ambedkar Dukkipati; Debasish Ghose
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In this paper we explore the possibility of using computational algebraic methods to analyze a class of consensus protocols. We state some necessary conditions for convergence under consensus protocols that are polynomials.
Source: http://arxiv.org/abs/1107.3584v1