corpus_id stringlengths 3 9 | arxiv_id stringlengths 9 16 | date stringdate 1989-10-26 00:00:00 2024-09-30 00:00:00 | title stringlengths 4 240 | abstract stringlengths 3 3.15k | categories listlengths 1 10 | topics listlengths 0 15 ⌀ | roles listlengths 1 4 | key_references listlengths 0 10 ⌀ | authors listlengths 1 5.28k ⌀ | citation_trajectory listlengths 14 26 ⌀ |
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7166811 | 0910.3973 | 2009-10-20 | On the Delay-Throughput Tradeoff in Distributed Wireless Networks | This paper deals with the delay-throughput analysis of a single-hop wireless network with $n$ transmitter/receiver pairs. All channels are assumed to be block Rayleigh fading with shadowing, described by parameters $(\alpha,\varpi)$, where $\alpha$ denotes the probability of shadowing and $\varpi$ represents the averag... | [
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"name": "Alireza Bayesteh",
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225474 | 1006.4386 | 2009-10-21 | Collaborative Relay Beamforming for Secrecy | In this paper, collaborative use of relays to form a beamforming system and provide physical-layer security is investigated. In particular, decode-and-forward (DF) and amplify-and-forward (AF) relay beamforming designs under total and individual relay power constraints are studied with the goal of maximizing the secrec... | [
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"name": "Mustafa [\"Cenk\"] Gursoy",
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15364755 | 0910.4042 | 2009-10-21 | Compression-based investigation of the dynamical properties of cellular automata and other systems | A method for studying the qualitative dynamical properties of abstract computing machines based on the approximation of their program-size complexity using a general lossless compression algorithm is presented. It is shown that the compression-based approach classifies cellular automata (CA) into clusters according to ... | [
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"name": "Hector Zenil",
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15585151 | 0910.4122 | 2009-10-21 | Pseudorandom Generators for Polynomial Threshold Functions | We study the natural question of constructing pseudorandom generators (PRGs) for low-degree polynomial threshold functions (PTFs). We give a PRG with seed-length log n/eps^{O(d)} fooling degree d PTFs with error at most eps. Previously, no nontrivial constructions were known even for quadratic threshold functions and c... | [
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"name": "David Zuckerman",
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... | null |
17907105 | 0910.4130 | 2009-10-21 | On the Achievable Throughput Region of Multiple-Access Fading Channels with QoS Constraints | Effective capacity, which provides the maximum constant arrival rate that a given service process can support while satisfying statistical delay constraints, is analyzed in a multiuser scenario. In particular, we study the achievable effective capacity region of the users in multiaccess fading channels (MAC) in the pre... | [
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"name": "Mustafa [\"Cenk\"] Gursoy",
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10586750 | 0910.4128 | 2009-10-21 | Secure Communication in the Low-SNR Regime | Secrecy capacity of a multiple-antenna wiretap channel is studied in the low signal-to-noise ratio (SNR) regime. Expressions for the first and second derivatives of the secrecy capacity with respect to SNR at SNR = 0 are derived. Transmission strategies required to achieve these derivatives are identified. In particula... | [
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119119115 | 0910.4018 | 2009-10-21 | Major Merging: The Way to Make a Massive, Passive Galaxy | We analyze the projected axial ratio distribution, p(b/a), of galaxies that were spectroscopically selected from the Sloan Digital Sky Survey (DR6) to have low star-formation rates. For these quiescent galaxies we find a rather abrupt change in p(b/a) at a stellar mass of ~10^{11} M_sol: at higher masses there are hard... | [
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55917078 | 0910.4166 | 2009-10-21 | Nematic Fermi Fluids in Condensed Matter Physics | Correlated electron fluids can exhibit a startling array of complex phases, among which one of the more surprising is the electron nematic, a translationally invariant metallic phase with a spontaneously generated spatial anisotropy. Classical nematics generally occur in liquids of rod-like molecules; given that electr... | [
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119178739 | 0910.4011 | 2009-10-21 | High resolution AMI Large Array imaging of spinning dust sources: spatially correlated 8 micron emission and evidence of a stellar wind in L675 | We present 25 arcsecond resolution radio images of five Lynds Dark Nebulae (L675, L944, L1103, L1111 & L1246) at 16 GHz made with the Arcminute Microkelvin Imager (AMI) Large Array. These objects were previously observed with the AMI Small Array to have an excess of emission at microwave frequencies relative to lower f... | [
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118608440 | 0910.4187 | 2009-10-21 | The Jem-Euso Mission | JEM-EUSO is a space science mission to explore extreme energies and physics of the Universe. Its instrument will watch the dark-side of the earth and will detect UV photons emitted from the extensive air shower caused by an Ultra-High Energy Cosmic Rays (UHECRs above 10^18 eV), or Extremely High Energy Cosmic Ray (EHEC... | [
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3077253 | 0910.4074 | 2009-10-21 | Surface code quantum communication | Quantum communication typically involves a linear chain of repeater stations, each capable of reliable local quantum computation and connected to their nearest neighbors by unreliable communication links. The communication rate in existing protocols is low as two-way classical communication is used. We show that, if Be... | [
"quant-ph"
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17298392 | 0910.3952 | 2009-10-21 | Local Quantum Measurement and No-Signaling Imply Quantum Correlations | We show that, assuming that quantum mechanics holds locally, the finite speed of information is the principle that limits all possible correlations between distant parties to be quantum mechanical as well. Local quantum mechanics means that a Hilbert space is assigned to each party, and then all local positive-operator... | [
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"name": "Salman Beigi",
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17727419 | 0910.4116 | 2009-10-21 | Swarm Intelligence | Biologically inspired computing is an area of computer science which uses the advantageous properties of biological systems. It is the amalgamation of computational intelligence and collective intelligence. Biologically inspired mechanisms have already proved successful in achieving major advances in a wide range of pr... | [
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"name": "Mauro Birattari",
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7821247 | 0910.4192 | 2009-10-21 | Fermi observations of high-energy gamma-ray emission from GRB 080825C | The Fermi Gamma-ray Space Telescope (FGST) has opened a new high-energy window in the study of Gamma-Ray Bursts (GRBs). Here we present a thorough analysis of GRB 080825C, which triggered the Fermi Gamma-ray Burst Monitor (GBM), and was the first firm detection of a GRB by the Fermi Large Area Telescope (LAT). We discu... | [
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12676846 | 0910.4177 | 2009-10-21 | Exact Simulation of Bessel Diffusions | We consider the exact path sampling of the squared Bessel process and some other continuous-time Markov processes, such as the CIR model, constant elasticity of variance diffusion model, and hypergeometric diffusions, which can all be obtained from a squared Bessel process by using a change of variable, time and scale ... | [
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14732500 | 0910.4081 | 2009-10-21 | Infinitary Combinatory Reduction Systems: Confluence | We study confluence in the setting of higher-order infinitary rewriting, in particular for infinitary Combinatory Reduction Systems (iCRSs). We prove that fully-extended, orthogonal iCRSs are confluent modulo identification of hypercollapsing subterms. As a corollary, we obtain that fully-extended, orthogonal iCRSs hav... | [
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"name": "Jakob [\"Grue\"] Simonsen",
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3850485 | 0910.4186 | 2009-10-21 | Media-TCP: A Quality-Centric TCP-Friendly Congestion Control for Multimedia Transmission | In this paper, we propose a quality-centric congestion control for multimedia streaming over IP networks, which we refer to as media-TCP. Unlike existing congestion control schemes that adapt a user's sending rate merely to the network condition, our solution adapts the sending rate to both the network condition and th... | [
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"name": "Mihaela [\"van\",\"der\"] Schaar",
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19915781 | 0910.4045 | 2009-10-21 | Time walkers and spatial dynamics of ageing information | The distribution of information is essential for living system's ability to coordinate and adapt. Random walkers are often used to model this distribution process and, in doing so, one effectively assumes that information maintains its relevance over time. But the value of information in social and biological systems o... | [
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"name": "Martin Rosvall",
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... | null |
10075131 | 0910.4183 | 2009-10-21 | Parton Distributions for Event Generators | In this paper, conventional Global QCD analysis is generalized to produce parton distributions optimized for use with event generators at the LHC. This optimization is accomplished by combining the constraints due to existing hard-scattering experimental data with those from anticipated cross sections for key represent... | [
"hep-ph"
] | null | [
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] | null | null | null |
28697936 | 0910.4360 | 2009-10-22 | About the strength of correlation effects in the electronic structure of iron | The strength of electronic correlation effects in the spin-dependent electronic structure of ferromagnetic bcc Fe(110) has been investigated by means of spin and angle-resolved photoemission spectroscopy. The experimental results are compared to theoretical calculations within the three-body scattering approximation an... | [
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"author_id": "j fink_1",
"name": "Jörg Fink",
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18852169 | 0910.4279 | 2009-10-22 | The Herschel ATLAS | The Herschel ATLAS is the largest open-time key project that will be carried out on the Herschel Space Observatory. It will survey 510 square degrees of the extragalactic sky, four times larger than all the other Herschel surveys combined, in five far-infrared and submillimetre bands. We describe the survey, the comple... | [
"astro-ph.CO"
] | null | [
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] | null | null | null |
14675360 | 0910.4157 | 2009-10-22 | Black-box Hamiltonian simulation and unitary implementation | We present general methods for simulating black-box Hamiltonians using quantum walks. These techniques have two main applications: simulating sparse Hamiltonians and implementing black-box unitary operations. In particular, we give the best known simulation of sparse Hamiltonians with constant precision. Our method has... | [
"quant-ph"
] | null | [
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] | null | null | null |
234018 | 0910.4266 | 2009-10-22 | The Partition Bound for Classical Communication Complexity and Query Complexity | We describe new lower bounds for randomized communication complexity and query complexity which we call the partition bounds. They are expressed as the optimum value of linear programs. For communication complexity we show that the partition bound is stronger than both the rectangle/corruption bound and the \gamma_2/ge... | [
"cs.CC"
] | null | [
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] | null | null | null |
1640951 | 0910.4228 | 2009-10-22 | Unbounded violations of bipartite Bell Inequalities via Operator Space theory | In this work we show that bipartite quantum states with local Hilbert space dimension n can violate a Bell inequality by a factor of order $\sqrt{n}$ (up to a logarithmic factor) when observables with n possible outcomes are used. A central tool in the analysis is a close relation between this problem and operator spac... | [
"quant-ph"
] | null | [
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] | null | null | null |
952562 | 0910.4397 | 2009-10-22 | The Geometry of Generalized Binary Search | This paper investigates the problem of determining a binary-valued function through a sequence of strategically selected queries. The focus is an algorithm called Generalized Binary Search (GBS). GBS is a well-known greedy algorithm for determining a binary-valued function through a sequence of strategically selected q... | [
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47153153 | 0910.4292 | 2009-10-22 | An empirical study of spatial and transpatial social networks using Bluetooth and Facebook | This study provides insights into the quantitative similarities, differences and relationships between users' spatial, face-to-face, urban social networks and their transpatial, online counterparts. We explore and map the social ties within a cohort of 2602 users, and how those ties are mediated via physical co-presenc... | [
"cs.CY"
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{
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] | null |
115167362 | 0910.4442 | 2009-10-23 | CMC Surfaces in Riemannian Manifolds Condensing to a Compact Network of Curves | A sequence of constant mean curvature surfaces $\Sigma_j$ with mean curvature $H_j \to \infty$ in a three-dimensional manifold $M$ condenses to a compact and connected graph $\Gamma$ consisting of a finite union of curves if $\Sigma_j$ is contained in a tubular neighbourhood of $\Gamma$ of size $\mathcal O(1/H_j)$ for ... | [
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118888806 | 0910.4528 | 2009-10-23 | Diagonal Kaluza-Klein expansion under brane localized potential | We clarify and study our previous observation that, under a compactification with boundaries or orbifolding, vacuum expectation value of a bulk scalar field can have different extra-dimensional wave-function profile from that of the lowest Kaluza-Klein mode of its quantum fluctuation, under presence of boundary-localiz... | [
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"name": "Kin-ya Oda",
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6793630 | 0910.4618 | 2009-10-23 | A Game Theoretic Analysis of Incentives in Content Production and Sharing over Peer-to-Peer Networks | User-generated content can be distributed at a low cost using peer-to-peer (P2P) networks, but the free-rider problem hinders the utilization of P2P networks. In order to achieve an efficient use of P2P networks, we investigate fundamental issues on incentives in content production and sharing using game theory. We bui... | [
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14935910 | 0910.4555 | 2009-10-23 | Automata and Reduced Words in the Free Group | We consider some questions about formal languages that arise when inverses of letters, words and languages are defined. The reduced representation of a language over the free monoid is its unique equivalent representation in the free group. We show that the class of regular languages is closed under taking the reduced ... | [
"cs.FL"
] | null | [
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119208054 | 0910.4535 | 2009-10-23 | Mass anomalous dimension in SU(2) with two adjoint fermions | We study SU(2) lattice gauge theory with two flavours of Dirac fermions in the adjoint representation. We measure the running of the coupling in the Schroedinger Functional (SF) scheme and find it is consistent with existing results. We discuss how systematic errors affect the evidence for an infrared fixed point (IRFP... | [
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"name": "Luigi [\"Del\"] Debbio",
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119113715 | 0910.4553 | 2009-10-23 | Large Deviations of the Free-Energy in Diluted Mean-Field Spin-Glass | Sample-to-sample free energy fluctuations in spin-glasses display a markedly different behaviour in finite-dimensional and fully-connected models, namely Gaussian vs. non-Gaussian. Spin-glass models defined on various types of random graphs are in an intermediate situation between these two classes of models and we inv... | [
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51114546 | 0910.4540 | 2009-10-23 | Multiwavelength monitoring of the enigmatic Narrow-Line Seyfert 1 PMN J0948+0022 in March-July 2009 | Following the recent discovery of gamma rays from the radio-loud narrow-line Seyfert 1 galaxy PMN J0948+0022 (z=0.5846), we started a multiwavelength campaign from radio to gamma rays, which was carried out between the end of March and the beginning of July 2009. The source displayed activity at all the observed wavele... | [
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1433331 | 0910.4699 | 2009-10-24 | Sum of Us: Strategyproof Selection from the Selectors | We consider directed graphs over a set of n agents, where an edge (i,j) is taken to mean that agent i supports or trusts agent j. Given such a graph and an integer k\leq n, we wish to select a subset of k agents that maximizes the sum of indegrees, i.e., a subset of k most popular or most trusted agents. At the same ti... | [
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"name": "Felix [\"A.\"] Fischer",
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10422146 | 0910.4686 | 2009-10-24 | Moderate Deviations of the Random Riccati Equation | We characterize the invariant filtering measures resulting from Kalman filtering with intermittent observations (\cite{Bruno}), where the observation arrival is modeled as a Bernoulli process. In \cite{Riccati-weakconv}, it was shown that there exists a $\overline{\gamma}^{\{\scriptsize{sb}}}>0$ such that for every obs... | [
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843233 | 0910.4615 | 2009-10-24 | The McKean-Vlasov Equation in Finite Volume | We study the McKean--Vlasov equation on the finite tori of length scale $L$ in $d$--dimensions. We derive the necessary and sufficient conditions for the existence of a phase transition, which are based on the criteria first uncovered in \cite{GP} and \cite{KM}. Therein and in subsequent works, one finds indications po... | [
"math-ph",
"math.MP"
] | null | [
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] | null | null | null |
10724741 | 1403.3931 | 2009-10-24 | Quickest detection in coupled systems | This work considers the problem of quickest detection of signals in a coupled system of $N$ sensors, which receive continuous sequential observations from the environment. It is assumed that the signals, which are modeled by general It\^{o} processes, are coupled across sensors, but that their onset times may differ fr... | [
"cs.IT",
"math.IT"
] | null | [
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] | null | null | null |
2753746 | 0910.4627 | 2009-10-24 | Self-concordant analysis for logistic regression | Most of the non-asymptotic theoretical work in regression is carried out for the square loss, where estimators can be obtained through closed-form expressions. In this paper, we use and extend tools from the convex optimization literature, namely self-concordant functions, to provide simple extensions of theoretical re... | [
"cs.LG",
"math.ST",
"stat.TH"
] | null | [
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871172 | 0910.4698 | 2009-10-25 | BQP and the Polynomial Hierarchy | The relationship between BQP and PH has been an open problem since the earliest days of quantum computing. We present evidence that quantum computers can solve problems outside the entire polynomial hierarchy, by relating this question to topics in circuit complexity, pseudorandomness, and Fourier analysis. First, we s... | [
"quant-ph",
"cs.CC"
] | null | [
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] | null | null | null |
3196525 | 0910.4738 | 2009-10-25 | On the connections between PCTL and Dynamic Programming | Probabilistic Computation Tree Logic (PCTL) is a well-known modal logic which has become a standard for expressing temporal properties of finite-state Markov chains in the context of automated model checking. In this paper, we give a definition of PCTL for noncountable-space Markov chains, and we show that there is a s... | [
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53624977 | 0910.4725 | 2009-10-25 | Collisional evolution of eccentric planetesimal swarms | Models for the steady state collisional evolution of low eccentricity planetesimal belts identify debris disks with hot dust at 1AU, like eta Corvi and HD69830, as anomalous since collisional processing should have removed most of the planetesimal mass over their >1 Gyr lifetimes. This paper looks at the effect of larg... | [
"astro-ph.EP",
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264647991 | 0910.4887 | 2009-10-26 | Fast Image Recovery Using Variable Splitting and Constrained Optimization | We propose a new fast algorithm for solving one of the standard formulations of image restoration and reconstruction which consists of an unconstrained optimization problem where the objective includes an $\ell_2$ data-fidelity term and a non-smooth regularizer. This formulation allows both wavelet-based (with orthogon... | [
"math.OC"
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12047669 | 0910.4914 | 2009-10-26 | Enhanced Sampling in the Well-Tempered Ensemble | We introduce the well-tempered ensemble (WTE) which is the biased ensemble sampled by well-tempered metadynamics when the energy is used as collective variable. WTE can be designed so as to have approximately the same average energy as the canonical ensemble but much larger fluctuations. These two properties lead to an... | [
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10812104 | 0910.4874 | 2009-10-26 | K-User Fading Interference Channels: The Ergodic Very Strong Case | Sufficient conditions required to achieve the interference-free capacity region of ergodic fading K-user interference channels (IFCs) are obtained. In particular, this capacity region is shown to be achieved when every receiver decodes all K transmitted messages such that the channel statistics and the waterfilling pow... | [
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945320 | 0910.4901 | 2009-10-26 | Distortion Exponent in MIMO Channels with Feedback | The transmission of a Gaussian source over a block-fading multiple antenna channel in the presence of a feedback link is considered. The feedback link is assumed to be an error and delay free link of capacity 1 bit per channel use. Under the short-term power constraint, the optimal exponential behavior of the end-to-en... | [
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154460645 | 0910.4941 | 2009-10-26 | Old and new approaches to LIBOR modeling | In this article, we review the construction and properties of some popular approaches to modeling LIBOR rates. We discuss the following frameworks: classical LIBOR market models, forward price models and Markov-functional models. We close with the recently developed affine LIBOR models. | [
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8864460 | 0910.4784 | 2009-10-26 | The size, density, and formation of the Orcus-Vanth system in the Kuiper belt | The Kuiper belt object Orcus and its satellite Vanth form an unusual system in the Kuiper belt. Orcus is amongst the largest objects known in the Kuiper belt, but the relative size of Vanth is much larger than that of the tiny satellites of the other large objects. From Hubble Space Telescope observations we find that ... | [
"astro-ph.EP"
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2034307 | 0910.4932 | 2009-10-26 | Algorithmic metatheorems for decidable LTL model checking over infinite systems | By algorithmic metatheorems for a model checking problem P over infinite-state systems we mean generic results that can be used to infer decidability (possibly complexity) of P not only over a specific class of infinite systems, but over a large family of classes of infinite systems. Such results normally start with a ... | [
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4029462 | 0910.4984 | 2009-10-26 | Stochastic Turing patterns in the Brusselator model | A stochastic version of the Brusselator model is proposed and studied via the system size expansion. The mean-field equations are derived and shown to yield to organized Turing patterns within a specific parameters region. When determining the Turing condition for instability, we pay particular attention to the role of... | [
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53591459 | 0910.4866 | 2009-10-26 | Lateral Distribution of the Radio Signal in Extensive Air Showers Measured with LOPES | The antenna array LOPES is set up at the location of the KASCADE-Grande extensive air shower experiment in Karlsruhe, Germany and aims to measure and investigate radio pulses from Extensive Air Showers. The coincident measurements allow us to reconstruct the electric field strength at observation level in dependence of... | [
"astro-ph.HE"
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1228783 | 0910.5027 | 2009-10-26 | Information-theoretically Secret Key Generation for Fading Wireless Channels | The multipath-rich wireless environment associated with typical wireless usage scenarios is characterized by a fading channel response that is time-varying, location-sensitive, and uniquely shared by a given transmitter-receiver pair. The complexity associated with a richly scattering environment implies that the short... | [
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119237178 | 0910.4583 | 2009-10-26 | The Fermi Haze: A Gamma-Ray Counterpart to the Microwave Haze | The Fermi Gamma-Ray Space Telescope reveals a diffuse inverse Compton signal in the inner Galaxy with a similar spatial morphology to the microwave haze observed by WMAP, supporting the synchrotron interpretation of the microwave signal. Using spatial templates, we regress out pi0 gammas, as well as IC and bremsstrahlu... | [
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1114468 | 0910.4955 | 2009-10-26 | On the Structure of Real-Time Encoders and Decoders in a Multi-Terminal Communication System | A real-time communication system with two encoders communicating with a single receiver over separate noisy channels is considered. The two encoders make distinct partial observations of a Markov source. Each encoder must encode its observations into a sequence of discrete symbols. The symbols are transmitted over nois... | [
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14574582 | 0910.5264 | 2009-10-27 | A Sequential Problem in Decentralized Detection with Communication | A sequential problem in decentralized detection is considered. Two observers can make repeated noisy observations of a binary hypothesis on the state of the environment. At any time, observer 1 can stop and send a final binary message to observer 2 or it may continue to take more measurements. Every time observer 1 pos... | [
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53598781 | 0910.4963 | 2009-10-27 | Topological Anti-Topological Fusion in Four-Dimensional Superconformal Field Theories | We present some new exact results for general four-dimensional superconformal field theories. We derive differential equations governing the coupling constant dependence of chiral primary correlators. For N=2 theories we show that the Zamolodchikov metric on the moduli space and the operator mixing of chiral primaries ... | [
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59024560 | 0910.5060 | 2009-10-27 | Two-sample Bayesian Nonparametric Hypothesis Testing | In this article we describe Bayesian nonparametric procedures for two-sample hypothesis testing. Namely, given two sets of samples $\mathbf{y}^{\scriptscriptstyle(1)}\;$\stackrel{\scriptscriptstyle{iid}}{\s im}$\;F^{\scriptscriptstyle(1)}$ and $\mathbf{y}^{\scriptscriptstyle(2 )}\;$\stackrel{\scriptscriptstyle{iid}}{\s... | [
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197404444 | 0910.5260 | 2009-10-27 | A Gradient Descent Algorithm on the Grassman Manifold for Matrix Completion | We consider the problem of reconstructing a low-rank matrix from a small subset of its entries. In this paper, we describe the implementation of an efficient algorithm called OptSpace, based on singular value decomposition followed by local manifold optimization, for solving the low-rank matrix completion problem. It h... | [
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14235561 | 0910.5250 | 2009-10-27 | Positivity and optimization for semi-algebraic functions | We describe algebraic certificates of positivity for functions belonging to a finitely generated algebra of Borel measurable functions, with particular emphasis to algebras generated by semi-algebraic functions. In which case the standard global optimization problem with constraints given by elements of the same algebr... | [
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15090424 | 0910.5232 | 2009-10-27 | Quantitative nanoparticle structures from ultrafast electron crystallography data | We describe the quantitative refinement of nanoparticle structures from gold nanoparticles probed by ultrafast electron crystallography (UEC). We establish the equivalence between the modified radial distribution function employed in UEC and the atomic pair distribution function (PDF) used in x-ray and neutron powder d... | [
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118366923 | 0910.5218 | 2009-10-27 | O-V-S-Z and friends: Non-Gaussianity from inhomogeneous reionization | We calculate the cosmic microwave background (CMB) bispectrum due to inhomogeneous reionization. We calculate all the terms that can contribute to the bispectrum that are products of first order terms on all scales in conformal Newtonian gauge. We also correctly account for the de-correlation between the matter density... | [
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123057858 | 0910.5520 | 2009-10-28 | Fermi LAT Observations of LS 5039 | The first results from observations of the high mass X-ray binary LS 5039 using the Fermi Gamma-ray Space Telescope data between 2008 August and 2009 June are presented. Our results indicate variability that is consistent with the binary period, with the emission being modulated with a period of 3.903 +/- 0.005 days; t... | [
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8941218 | 0910.5516 | 2009-10-28 | Finding overlapping communities in networks by label propagation | We propose an algorithm for finding overlapping community structure in very large networks. The algorithm is based on the label propagation technique of Raghavan, Albert, and Kumara, but is able to detect communities that overlap. Like the original algorithm, vertices have labels that propagate between neighbouring ver... | [
"physics.soc-ph",
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] | null | [
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118506831 | 0910.5349 | 2009-10-28 | Average distance in a hierarchical scale-free network: an exact solution | Various real systems simultaneously exhibit scale-free and hierarchical structure. In this paper, we study analytically average distance in a deterministic scale-free network with hierarchical organization. Using a recursive method based on the network construction, we determine explicitly the average distance, obtaini... | [
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{
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"name": "Yuan Lin",
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7207260 | 0910.5426 | 2009-10-28 | Continuum Equilibria and Global Optimization for Routing in Dense Static Ad Hoc Networks | We consider massively dense ad hoc networks and study their continuum limits as the node density increases and as the graph providing the available routes becomes a continuous area with location and congestion dependent costs. We study both the global optimal solution as well as the non-cooperative routing problem amon... | [
"cs.GT"
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{
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"... | null |
675632 | 0910.5442 | 2009-10-28 | The Veblen functions for computability theorists | We study the computability-theoretic complexity and proof-theoretic strength of the following statements: (1) "If X is a well-ordering, then so is epsilon_X", and (2) "If X is a well-ordering, then so is phi(alpha,X)", where alpha is a fixed computable ordinal and phi the two-placed Veblen function. For the former stat... | [
"math.LO"
] | null | [
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] | null | null | null |
119210260 | 0910.5269 | 2009-10-28 | IRAS 16293: A "Magnetic" Tale of Two Cores | We present polarization observations of the dust continuum emission from IRAS 16293 which is a Class 0 protostar and is known to have at least two components, source A and B. These measurements were conducted by the Submillimeter Array (SMA) at a frequency of ~341 GHz and with high angular resolution (~2-3 arcseconds).... | [
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12636177 | 0910.5435 | 2009-10-28 | Fast algorithms for spherical harmonic expansions, III | We accelerate the computation of spherical harmonic transforms, using what is known as the butterfly scheme. This provides a convenient alternative to the approach taken in the second paper from this series on "Fast algorithms for spherical harmonic expansions." The requisite precomputations become manageable when orga... | [
"cs.NA"
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{
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] | null |
24902525 | 0910.5294 | 2009-10-28 | DNA Breathing Dynamics in the Presence of a Terahertz Field | We consider the influence of a terahertz field on the breathing dynamics of double-stranded DNA. We model the spontaneous formation of spatially localized openings of a damped and driven DNA chain, and find that linear instabilities lead to dynamic dimerization, while true local strand separations require a threshold a... | [
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{
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{
"author_id": "v gelev_0",
"name": "Vladimir Gelev",
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37191561 | 0910.5282 | 2009-10-28 | Upper Limits on the Number of Small Bodies in Sedna-Like Orbits by the TAOS Project | We present the results of a search for occultation events by objects at distances between 100 and 1000 AU in lightcurves from the Taiwanese-American Occultation Survey (TAOS). We searched for consecutive, shallow flux reductions in the stellar lightcurves obtained by our survey between 7 February 2005 and 31 December 2... | [
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5488594 | 0910.5357 | 2009-10-28 | Diffuse-Charge Effects on the Transient Response of Electrochemical Cells | We present theoretical models for the time-dependent voltage of an electrochemical cell in response to a current step, including effects of diffuse charge (or "space charge") near the electrodes on Faradaic reaction kinetics. The full model is based on the classical Poisson-Nernst-Planck equations with generalized Frum... | [
"physics.chem-ph",
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{
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{
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14192791 | 0910.5436 | 2009-10-28 | Measuring the Transmission Matrix in Optics : An Approach to the Study and Control of Light Propagation in Disordered Media | We introduce a method to experimentally measure the monochromatic transmission matrix of a complex medium in optics. This method is based on a spatial phase modulator together with a full-field interferometric measurement on a camera. We determine the transmission matrix of a thick random scattering sample. We show tha... | [
"physics.optics"
] | null | [
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] | null | null | null |
16151804 | 0910.5454 | 2009-10-28 | The Cyborg Astrobiologist: Testing a Novelty-Detection Algorithm on Two Mobile Exploration Systems at Rivas Vaciamadrid in Spain and at the Mars Desert Research Station in Utah | (ABRIDGED) In previous work, two platforms have been developed for testing computer-vision algorithms for robotic planetary exploration (McGuire et al. 2004b,2005; Bartolo et al. 2007). The wearable-computer platform has been tested at geological and astrobiological field sites in Spain (Rivas Vaciamadrid and Riba de S... | [
"cs.CV",
"astro-ph.EP",
"astro-ph.IM",
"cs.LG",
"stat.ML"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "18698321",
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}
] | [
{
"author_id": "p mcguire_1",
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},
{
"author_id": "c gross_2",
"name": "Christoph Gross",
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"h_index": null,
"num_paper... | null |
54071918 | 0910.5359 | 2009-10-28 | Test of hadronic interaction models with air shower data | The description of high-energy hadronic interactions plays an important role in the (astrophysical) interpretation of air shower data. The parameter space important for the development of air showers (energy and kinematical range) extends well beyond todays accelerator capabilities. Therefore, accurate measurements of ... | [
"astro-ph.HE"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j hörandel_1",
"name": "Jörg [\"R.\"] Hörandel",
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},
{
"author_id": "w apel_1",
"name": "W-D. Apel",
"publication_history": null,
"h_index": null,
"num_papers": null... | null |
55765700 | 0910.5416 | 2009-10-28 | A Finite Multiplicity Helson-Lowdenslager-De Branges Theorem | This paper proves two theorems. The first of these simplifies and lends clarity to the previous characterizations of the invariant subspaces of $S$, the operator of multiplication by the coordinate function $z$, on $L^2(\mathbb{T};\mathbb{C}^n)$, where $\mathbb{T}$ is the unit circle, by characterizing the invariant su... | [
"math.FA",
"math.CV"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17977915 | 0910.5748 | 2009-10-29 | A Stochastic Immersed Boundary Method for Fluid-Structure Dynamics at Microscopic Length Scales | In this work it is shown how the immersed boundary method of (Peskin2002) for modeling flexible structures immersed in a fluid can be extended to include thermal fluctuations. A stochastic numerical method is proposed which deals with stiffness in the system of equations by handling systematically the statistical contr... | [
"cond-mat.soft",
"cond-mat.mes-hall",
"cond-mat.stat-mech",
"physics.flu-dyn"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "p atzberger_1",
"name": "Paul [\"J.\"] Atzberger",
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},
{
"author_id": "p kramer_1",
"name": "Peter [\"R.\"] Kramer",
"publication_history": null,
"h_index": null,
"n... | null |
119215082 | 0910.5598 | 2009-10-29 | Searching for sub-kilometer TNOs using Pan-STARRS video mode lightcurves: Preliminary study and evaluation using engineering data | We present a pre-survey study of using Pan-STARRS high sampling rate video mode guide star images to search for TNOs. With suitable selection of the guide stars within the Pan-STARRS 7 deg^{2} field of view, the lightcurves of these guide stars can also be used to search for occultations by TNOs. The best target stars ... | [
"astro-ph.EP"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "13268096",
"num_citations": null
},
{
"corpus_id": "8915427",
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}
] | [
{
"author_id": "j wang_493",
"name": "J. [\"H.\"] Wang",
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"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j wang_493",
"name": "J. [\"H.\"] Wang",
"publication_history": null,
"h_index": null,
"num_papers": nul... | null |
39047752 | 0910.5649 | 2009-10-29 | Mid- and Far-infrared Luminosity Functions and Galaxy Evolution from Multiwavelength Spitzer Observations up to z~2.5 | [Abridged]We exploit a large homogeneous dataset to derive a self-consistent picture of IR emission based on the time-dependent 24, 15, 12 and 8micron monochromatic and bolometric IR luminosity functions (LF) over the 0<z<2.5 redshift range. Our analysis is based on the combination of data from deep Spitzer surveys in ... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
216049807 | 0910.5643 | 2009-10-29 | Magnetworks: how mobility impacts the design of Mobile Networks | In this paper we study the optimal placement and optimal number of active relay nodes through the traffic density in mobile sensor ad-hoc networks. We consider a setting in which a set of mobile sensor sources is creating data and a set of mobile sensor destinations receiving that data. We make the assumption that the ... | [
"cs.GT"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a silva_22",
"name": "Alonso Silva",
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},
{
"author_id": "e altman_1",
"name": "Eitan Altman",
"publication_history": null,
"h_index": null,
"num_papers": null,
"... | null |
1314596 | 0910.5761 | 2009-10-29 | Which graphical models are difficult to learn? | We consider the problem of learning the structure of Ising models (pairwise binary Markov random fields) from i.i.d. samples. While several methods have been proposed to accomplish this task, their relative merits and limitations remain somewhat obscure. By analyzing a number of concrete examples, we show that low-comp... | [
"stat.ML",
"cond-mat.stat-mech",
"cs.LG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
67843893 | 0910.5705 | 2009-10-29 | An HI absorbing circumnuclear disk in Cygnus A | We present Very Long Baseline Array (VLBA) HI absorption observations of the core region of the powerful radio galaxy Cygnus A. These data show both broad (FWHM = 231 \pm 21 km/s) and narrow (FWHM <30 km/s) velocity width absorption components. The broad velocity absorption shows high opacity on the counter jet, low op... | [
"astro-ph.CO",
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118507005 | 0910.5562 | 2009-10-29 | The optical microvariability and spectral changes of the BL Lacertae object S5 0716+714 | We monitored the BL Lac object S5 0716+714 in the optical band during October 2008, December 2008 and February 2009 with a best temporal resolution of about 5 minutes in the BVRI bands. Four fast flares were observed with amplitudes ranging from 0.3 to 0.75 mag. The source remained active during the whole monitoring ca... | [
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6119570 | 0910.5759 | 2009-10-29 | Secure Source Coding with a Helper | We consider a secure source coding problem with a rate-limited helper. In particular, Alice observes an independent and identically distributed (i.i.d.) source X and wishes to transmit this source losslessly to Bob over a rate-limited link. A helper (Helen), observes an i.i.d. correlated source Y and can transmit infor... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "r tandon_1",
"name": "Ravi Tandon",
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{
"author_id": "s ulukus_1",
"name": "Sennur Ulukus",
"publication_history": null,
"h_index": null,
"num_papers": null,
"... | null |
6067032 | 0910.5739 | 2009-10-29 | Stochastic Eulerian-Lagrangian Methods for Fluid-Structure Interactions with Thermal Fluctuations and Shear Boundary Conditions | A computational approach is introduced for the study of the rheological properties of complex fluids and soft materials. The approach allows for a consistent treatment of microstructure elastic mechanics, hydrodynamic coupling, thermal fluctuations, and externally driven shear flows. A mixed description in terms of Eul... | [
"cond-mat.soft",
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "41622568",
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}
] | [
{
"author_id": "p atzberger_1",
"name": "Paul [\"J.\"] Atzberger",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
119293971 | 0910.5644 | 2009-10-29 | Quantum Annealing of Hard Problems | Quantum annealing is analogous to simulated annealing with a tunneling mechanism substituting for thermal activation. Its performance has been tested in numerical simulation with mixed conclusions. There is a class of optimization problems for which the efficiency can be studied analytically using techniques based on t... | [
"quant-ph",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "t jorg_1",
"name": "Thomas Jorg",
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},
{
"author_id": "f krzakala_1",
"name": "Florent Krzakala",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
68323105 | 0910.5695 | 2009-10-29 | On blocks of Deligne's category Rep(S_t) | Recently P. Deligne introduced the tensor category Rep(S_t) (for t not necessarily an integer) which in a certain precise sense interpolates the categories Rep(S_d) of representations of the symmetric groups S_d. In this paper we describe the blocks of Deligne's category Rep(S_t). | [
"math.RT",
"math.CT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
845071 | 0910.5577 | 2009-10-29 | On the stability of two-chunk file-sharing systems | We consider five different peer-to-peer file sharing systems with two chunks, with the aim of finding chunk selection algorithms that have provably stable performance with any input rate and assuming non-altruistic peers who leave the system immediately after downloading the second chunk. We show that many algorithms t... | [
"cs.OS",
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15080665 | 0910.5599 | 2009-10-29 | Vector Bin Packing with Multiple-Choice | We consider a variant of bin packing called multiple-choice vector bin packing. In this problem we are given a set of items, where each item can be selected in one of several $D$-dimensional incarnations. We are also given $T$ bin types, each with its own cost and $D$-dimensional size. Our goal is to pack the items in ... | [
"cs.DS"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13534734 | 0910.5753 | 2009-10-29 | A Brownian Dynamics Model of Kinesin in Three Dimensions Incorporating the Force-Extension Profile of the Coiled-Coil Cargo Tether | The Kinesin family of motor proteins are involved in a variety of cellular processes that transport materials and generate force. With recent advances in experimental techniques, such as optical tweezers which can probe individual molecules, there has been an increasing interest in understanding the mechanisms by which... | [
"cond-mat.soft",
"cond-mat.stat-mech",
"physics.bio-ph",
"q-bio.BM"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "p atzberger_1",
"name": "Paul [\"J.\"] Atzberger",
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"num_papers": null,
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},
{
"author_id": "c peskin_1",
"name": "Charles [\"S.\"] Peskin",
"publication_history": null,
"h_index": null,
... | null |
13431780 | 0910.5673 | 2009-10-29 | Synchronization and Transient Stability in Power Networks and Non-Uniform Kuramoto Oscillators | Motivated by recent interest for multi-agent systems and smart power grid architectures, we discuss the synchronization problem for the network-reduced model of a power system with non-trivial transfer conductances. Our key insight is to exploit the relationship between the power network model and a first-order model o... | [
"math.OC",
"cs.SY",
"math-ph",
"math.DS",
"math.MP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6785447 | 0910.5742 | 2009-10-29 | Theoretical Framework for Microscopic Osmotic Phenomena | The basic ingredients of osmotic pressure are a solvent fluid with a soluble molecular species which is restricted to a chamber by a boundary which is permeable to the solvent fluid but impermeable to the solute molecules. For macroscopic systems at equilibrium, the osmotic pressure is given by the classical van't Hoff... | [
"cond-mat.soft",
"cond-mat.stat-mech",
"physics.bio-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "p atzberger_1",
"name": "Paul [\"J.\"] Atzberger",
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"num_papers": null,
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},
{
"author_id": "p kramer_1",
"name": "Peter [\"R.\"] Kramer",
"publication_history": null,
"h_index": null,
"n... | null |
118677411 | 0910.5944 | 2009-10-30 | Elliptic hypergeometry of supersymmetric dualities | We give a full list of known $\mathcal{N}=1$ supersymmetric quantum field theories related by the Seiberg electric-magnetic duality conjectures for $SU(N), SP(2N)$ and $G_2$ gauge groups. Many of the presented dualities are new, not considered earlier in the literature. For all these theories we construct superconforma... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118569826 | 0910.5916 | 2009-10-30 | Accurate multi-boson long-time dynamics in triple-well periodic traps | To solve the many-boson Schr\"odinger equation we utilize the Multiconfigurational time-dependent Hartree method for bosons (MCTDHB). To be able to attack larger systems and/or to propagate the solution for longer times, we implement a parallel version of the MCTDHB method thereby realizing the recently proposed [Strel... | [
"cond-mat.quant-gas"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a streltsov_1",
"name": "Alexej [\"I.\"] Streltsov",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "k sakmann_1",
"name": "Kaspar Sakmann",
"publication_history": null,
"h_index": null,
"num_p... | null |
119203557 | 0910.5828 | 2009-10-30 | A type IIn supernova with coronal lines in the low-metallicity compact dwarf galaxy J1320+2155 | We report the discovery of a type IIn supernova in the low-metallicity dwarf galaxy J1320+2155, with an oxygen abundance 12+logO/H = 8.0+/-0.2. This finding is based on SDSS (February 2008) and 3.5m Apache Point Observatory (February 2009) spectra taken one year apart, and on the observations that: the Hbeta and Halpha... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
3547642 | 0910.5851 | 2009-10-30 | Stability of multi-dimensional birth-and-death processes with state-dependent 0-homogeneous jumps | We study the positive recurrence of multi-dimensional birth-and-death processes describing the evolution of a large class of stochastic systems, a typical example being the randomly varying number of flow-level transfers in a telecommunication wire-line or wireless network. We first provide a generic method to construc... | [
"math.PR"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "9494414",
"num_citations": null
},
{
"corpus_id": "12922596",
"num_citations": null
}
] | [
{
"author_id": "m jonckheere_1",
"name": "Matthieu Jonckheere",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "s shneer_1",
"name": "Seva Shneer",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
15700141 | 1006.2678 | 2009-10-30 | A quantitative notion of redundancy for infinite frames | Bodmann, Casazza and Kutyniok introduced a quantitative notion of redundancy for finite frames - which they called {\em upper and lower redundancies} - that match better with an intuitive understanding of redundancy for finite frames in a Hilbert space. The objective of this paper is to see how much of this theory gene... | [
"math.FA",
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "b bodmann_1",
"name": "Bernhard [\"G.\"] Bodmann",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "p casazza_1",
"name": "Peter [\"G.\"] Casazza",
"publication_history": null,
"h_index": null,
... | null |
119262369 | 0910.5956 | 2009-10-30 | The Enrichment of the Intergalactic Medium with Adiabatic Feedback I: Metal Cooling and Metal Diffusion | A study of the IGM metal enrichment using a series of SPH simulations is presented, employing metal cooling and turbulent diffusion of metals and thermal energy. An adiabatic feedback mechanism was adopted where gas cooling was prevented to generate galactic winds without explicit wind particles. The simulations produc... | [
"astro-ph.CO",
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
47896 | 0911.0037 | 2009-10-30 | Large electronic bandwidth in solution-processable pyrene crystals: The role of close-packed crystal structure | We examine the interdependence of structural and electronic properties of two substituted pyrene crystals by means of combined spectroscopic probes and density-functional theory calculations. One derivative features n-hexyl side groups, while the other one contains branched silanyl groups. Both derivatives form triclin... | [
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "f provencher_0",
"name": "Françoise Provencher",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "n bérubé_0",
"name": "Nicolas Bérubé",
"publication_history": null,
"h_index": null,
"num_papers... | null |
5706510 | 0910.5932 | 2009-10-30 | Metric and Kernel Learning using a Linear Transformation | Metric and kernel learning are important in several machine learning applications. However, most existing metric learning algorithms are limited to learning metrics over low-dimensional data, while existing kernel learning algorithms are often limited to the transductive setting and do not generalize to new data points... | [
"cs.LG",
"cs.CV",
"cs.IR"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "p jain_10",
"name": "Prateek Jain",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "b kulis_1",
"name": "Brian Kulis",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num... | null |
14538429 | 0910.5816 | 2009-10-30 | Distributed Abstract Optimization via Constraints Consensus: Theory and Applications | Distributed abstract programs are a novel class of distributed optimization problems where (i) the number of variables is much smaller than the number of constraints and (ii) each constraint is associated to a network node. Abstract optimization programs are a generalization of linear programs that captures numerous ge... | [
"cs.DC",
"cs.CG",
"cs.DS"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
59503817 | 0911.0002 | 2009-10-30 | The Australia Telescope 20 GHz Survey: The Source Catalogue | We present the full source catalogue from the Australia Telescope 20 GHz (AT20G) Survey. The AT20G is a blind radio survey carried out at 20 GHz with the Australia Telescope Compact Array (ATCA) from 2004 to 2008, and covers the whole sky south of declination 0 deg. The AT20G source catalogue presented here is an order... | [
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
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