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12305042
astro-ph/0701504
2007-01-17
Star formation in a clustered environment around the UCHII region in IRAS 20293+3952
We aim at studying the cluster environment surrounding the UCHII region in IRAS 20293+3952, a region in the first stages of formation of a cluster around a high-mass star. BIMA and VLA were used to observe the 3 mm continuum, N2H+(1-0), NH3(1,1) and (2,2), and CH3OH(2-1) emission of the surroundings of the UCHII region...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
12322523
cond-mat/0701408
2007-01-17
Projected single-spin flip dynamics in the Ising Model
We study transition matrices for projected dynamics in the energy-magnetization space, magnetization space and energy space. Several single spin flip dynamics are considered such as the Glauber and Metropolis canonical ensemble dynamics and the Metropolis dynamics for three multicanonical ensembles: the flat energy-mag...
[ "cond-mat.stat-mech" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "a ferreira_2", "name": "A. [\"L.\"] Ferreira", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "r toral_1", "name": "Raúl Toral", "publication_history": null, "h_index": null, "num_papers": null...
null
9909400
astro-ph/0701510
2007-01-17
Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined with Other Cosmological Probes
The first cosmological results from the ESSENCE supernova survey (Wood-Vasey et al. 2007) are extended to a wider range of cosmological models including dynamical dark energy and non-standard cosmological models. We fold in a greater number of external data sets such as the recent Higher-z release of high-redshift supe...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15758529
cond-mat/0701397
2007-01-17
Dissipation: The phase-space perspective
We show, through a refinement of the work theorem, that the average dissipation, upon perturbing a Hamiltonian system arbitrarily far out of equilibrium in a transition between two canonical equilibrium states, is exactly given by $<W_{diss} > = < W > -\Delta F =kT D(\rho\|\widetilde{\rho})= kT < \ln (\rho/\widetilde{\...
[ "cond-mat.stat-mech" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "r kawai_1", "name": "Ryoichi Kawai", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "j parrondo_1", "name": "Juan [\"M\",\"R\"] Parrondo", "publication_history": null, "h_index": null, "num_pap...
null
8309103
astro-ph/0701511
2007-01-17
High Frequency VLBI Imaging of the Jet Base of M87
VLBA and Global VLBI observations of M87 at 43 GHz, some new and some previously published, are used to study the structural evolution of the jet with a spatial resolution of under 100 Schwarzschild radii. The images, taken between 1999 and 2004, have an angular resolution of 0.00043" x 0.00021". An edge-brightened jet...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1319881
hep-th/0701156
2007-01-17
The Refined Topological Vertex
We define a refined topological vertex which depends in addition on a parameter, which physically corresponds to extending the self-dual graviphoton field strength to a more general configuration. Using this refined topological vertex we compute, using geometric engineering, a two-parameter (equivariant) instanton expa...
[ "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
3075182
astro-ph/0701480
2007-01-17
COSMOS: 3D weak lensing and the growth of structure
We present a three dimensional cosmic shear analysis of the Hubble Space Telescope COSMOS survey, the largest ever optical imaging program performed in space. We have measured the shapes of galaxies for the tell-tale distortions caused by weak gravitational lensing, and traced the growth of that signal as a function of...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
29864427
cond-mat/0701416
2007-01-17
Quantum Theory of Cavity-Assisted Sideband Cooling of Mechanical Motion
We present a fully quantum theory describing the cooling of a cantilever coupled via radiation pressure to an illuminated optical cavity. Applying the quantum noise approach to the fluctuations of the radiation pressure force, we derive the opto-mechanical cooling rate and the minimum achievable phonon number. We find ...
[ "cond-mat.mes-hall" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1370425
cs/0701118
2007-01-18
Optimal Order of Decoding for Max-Min Fairness in $K$-User Memoryless Interference Channels
A $K$-user memoryless interference channel is considered where each receiver sequentially decodes the data of a subset of transmitters before it decodes the data of the designated transmitter. Therefore, the data rate of each transmitter depends on (i) the subset of receivers which decode the data of that transmitter, ...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "m maddah-ali_1", "name": "Mohammad [\"Ali\"] Maddah-ali", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "h mahdavi-doost_0", "name": "Hajar Mahdavi-Doost", "publication_history": null, "h_index": ...
null
6396366
hep-th/0701167
2007-01-18
Highest states in light-cone $AdS_5\times S^5$ superstring
We study the highest states in the compact rank-1 sectors of the AdS5 X S5 superstring in the framework of the recently proposed light cone Bethe Ansatz equations. In the su(1|1) sector we present strong coupling expansions in the two limits L,lambda -> OO (expanding in power of lambda^{-1/4} with fixed large L) and la...
[ "hep-th" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "2317553", "num_citations": null }, { "corpus_id": "14629806", "num_citations": null } ]
[ { "author_id": "m beccaria_1", "name": "Matteo Beccaria", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "g angelis_1", "name": "Gian [\"Fabrizio\",\"De\"] Angelis", "publication_history": null, "h_index": null, ...
null
2549075
astro-ph/0701534
2007-01-18
Deep 610-MHz GMRT observations of the Spitzer extragalactic First Look Survey field - I. Observations, data analysis and source catalogue
Observations of the Spitzer extragalactic First Look Survey field taken at 610 MHz with the Giant Metrewave Radio Telescope are presented. Seven individual pointings were observed, covering an area of 4 square degrees with a resolution of 5.8'' x 4.7'', PA 60 deg. The r.m.s. noise at the centre of the pointings is betw...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
6325792
math/0701513
2007-01-18
Adaptive Confidence Bands
We show that there do not exist adaptive confidence bands for curve estimation except under very restrictive assumptions. We propose instead to construct adaptive bands that cover a surrogate function f^\star which is close to, but simpler than, f. The surrogate captures the significant features in f. We establish lowe...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
11978273
astro-ph/0701527
2007-01-18
Predicting solar cycle 24 with a solar dynamo model
Whether the upcoming cycle 24 of solar activity will be strong or not is being hotly debated. The solar cycle is produced by a complex dynamo mechanism. We model the last few solar cycles by `feeding' observational data of the Sun's polar magnetic field into our solar dynamo model. Our results fit the observed sunspot ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
3832707
astro-ph/0701580
2007-01-19
Revised Primordial Helium Abundance Based on New Atomic Data
We have derived a primordial helium abundance of Yp = 0.2477 +- 0.0029, based on new atomic physics computations of the recombination coefficients of He I and of the collisional excitation of the H I Balmer lines together with observations and photoionization models of metal-poor extragalactic H II regions. The new ato...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15069098
quant-ph/0701142
2007-01-19
No nonlocal box is universal
We show that standard nonlocal boxes, also known as Popescu-Rohrlich machines, are not sufficient to simulate any nonlocal correlations that do not allow signalling. This was known in the multipartite scenario, but we extend the result to the bipartite case. We then generalize this result further by showing that no fin...
[ "quant-ph" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "8760930", "num_citations": null } ]
[ { "author_id": "f dupuis_1", "name": "Frédéric Dupuis", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "n gisin_1", "name": "Nicolas Gisin", "publication_history": null, "h_index": null, "num_papers": null, ...
null
258679
cs/0701125
2007-01-19
Universal Algorithmic Intelligence: A mathematical top->down approach
Sequential decision theory formally solves the problem of rational agents in uncertain worlds if the true environmental prior probability distribution is known. Solomonoff's theory of universal induction formally solves the problem of sequence prediction for unknown prior distribution. We combine both ideas and get a p...
[ "cs.AI", "cs.LG" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
18226529
astro-ph/0701553
2007-01-19
Constraining supernova models using the hot gas in clusters of galaxies
The hot Intra-Cluster Medium (ICM) in clusters of galaxies is a very large repository of metals produced by supernovae. We aim to accurately measure the abundances in the ICM of many clusters and compare these data with metal yields produced by supernovae. Using the data archive of the XMM-Newton X-ray observatory, we ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
7468632
cs/0701121
2007-01-19
Signature Sequence of Intersection Curve of Two Quadrics for Exact Morphological Classification
We present an efficient method for classifying the morphology of the intersection curve of two quadrics (QSIC) in PR3, 3D real projective space; here, the term morphology is used in a broad sense to mean the shape, topological, and algebraic properties of a QSIC, including singularity, reducibility, the number of conne...
[ "cs.CG", "cs.SC" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "c tu_2", "name": "Changhe Tu", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "w wang_44", "name": "Wenping Wang", "publication_history": null, "h_index": null, "num_papers": null, "num_cit...
null
265981123
astro-ph/0701594
2007-01-20
Dark matter maps reveal cosmic scaffolding
Ordinary baryonic particles (such as protons and neutrons) account for only one-sixth of the total matter in the Universe. The remainder is a mysterious "dark matter" component, which does not interact via electromagnetism and thus neither emits nor reflects light. As dark matter cannot be seen directly using tradition...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
7175890
cs/0701127
2007-01-20
A novel set of rotationally and translationally invariant features for images based on the non-commutative bispectrum
We propose a new set of rotationally and translationally invariant features for image or pattern recognition and classification. The new features are cubic polynomials in the pixel intensities and provide a richer representation of the original image than most existing systems of invariants. Our construction is based o...
[ "cs.CV", "cs.AI" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference", "target.key_reference" ]
[]
[ { "author_id": "r kondor_1", "name": "Risi Kondor", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
20277661
math/0701563
2007-01-20
Efficient Monte Carlo sampling by parallel marginalization
Markov chain Monte Carlo sampling methods often suffer from long correlation times. Consequently, these methods must be run for many steps to generate an independent sample. In this paper a method is proposed to overcome this difficulty. The method utilizes information from rapidly equilibrating coarse Markov chains th...
[ "math.NA", "math.ST", "stat.TH" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "j weare_1", "name": "Jonathan Weare", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
11302386
physics/0701235
2007-01-20
Mean flow of turbulent-laminar patterns in plane Couette flow
A turbulent-laminar banded pattern in plane Couette flow is studied numerically. This pattern is statistically steady, is oriented obliquely to the streamwise direction, and has a very large wavelength relative to the gap. The mean flow, averaged in time and in the homogeneous direction, is analysed. The flow in the qu...
[ "physics.flu-dyn" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
88524832
math/0701583
2007-01-21
Bayesian shrinkage prediction for the regression problem
We consider Bayesian shrinkage predictions for the Normal regression problem under the frequentist Kullback-Leibler risk function. Firstly, we consider the multivariate Normal model with an unknown mean and a known covariance. While the unknown mean is fixed, the covariance of future samples can be different from train...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "k kobayashi_4", "name": "Kei Kobayashi", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "f komaki_1", "name": "Fumiyasu Komaki", "publication_history": null, "h_index": null, "num_papers": null...
null
2592357
cs/0701132
2007-01-21
Certifying controls and systems software
Software system certification presents itself with many challenges, including the necessity to certify the system at the level of functional requirements, code and binary levels, the need to chase down run-time errors, and the need for proving timing properties of the eventual, compiled system. This paper illustrates p...
[ "cs.SE" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "e feron_1", "name": "Eric Feron", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "m roozbehani_1", "name": "Mardavij Roozbehani", "publication_history": null, "h_index": null, "num_papers": nul...
null
3099213
math/0701591
2007-01-21
Parameter test ideals of Cohen Macaulay rings
We describe an algorithm for computing parameter-test-ideals in certain local Cohen-Macaulay rings. The algorithm is based on the study of a Frobenius map on the injective hull of the residue field of the ring and on the application of Rodney Sharp's notion of ``special ideals''. Our techniques also provide an algorith...
[ "math.AC" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
902
cs/0701133
2007-01-21
The Case for Redundant Arrays of Internet Links (RAIL)
It is well-known that wide-area networks face today several performance and reliability problems. In this work, we propose to solve these problems by connecting two or more local-area networks together via a Redundant Array of Internet Links (or RAIL) and by proactively replicating each packet over these links. In that...
[ "cs.NI" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "a markopoulou_1", "name": "Athina Markopoulou", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "d cheriton_0", "name": "David [\"R.\"] Cheriton", "publication_history": null, "h_index": null, "...
null
562
cs/0701131
2007-01-21
Effective Beam Width of Directional Antennas in Wireless Ad Hoc Networks
It is known at a qualitative level that directional antennas can be used to boost the capacity of wireless ad hoc networks. Lacking is a measure to quantify this advantage and to compare directional antennas of different footprint patterns. This paper introduces the concept of the effective beam width (and the effectiv...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "j zhang_402", "name": "Jialiang Zhang", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "s liew_1", "name": "Soung [\"Chang\"] Liew", "publication_history": null, "h_index": null, "num_papers": ...
null
13521020
math/0701623
2007-01-22
Normal form transforms separate slow and fast modes in stochastic dynamical systems
Modelling stochastic systems has many important applications. Normal form coordinate transforms are a powerful way to untangle interesting long term macroscale dynamics from detailed microscale dynamics. We explore such coordinate transforms of stochastic differential systems when the dynamics has both slow modes and q...
[ "math.DS", "math.PR" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
2173510
math/0701605
2007-01-22
Resampling-based confidence regions and multiple tests for a correlated random vector
We derive non-asymptotic confidence regions for the mean of a random vector whose coordinates have an unknown dependence structure. The random vector is supposed to be either Gaussian or to have a symmetric bounded distribution, and we observe $n$ i.i.d copies of it. The confidence regions are built using a data-depend...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "s arlot_1", "name": "Sylvain Arlot", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "g blanchard_1", "name": "Gilles Blanchard", "publication_history": null, "h_index": null, "num_papers": null...
null
1460726
physics/0701261
2007-01-23
Measuring spike train synchrony
Estimating the degree of synchrony or reliability between two or more spike trains is a frequent task in both experimental and computational neuroscience. In recent years, many different methods have been proposed that typically compare the timing of spikes on a certain time scale to be fixed beforehand. Here, we propo...
[ "physics.bio-ph", "physics.data-an", "q-bio.NC" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
27186675
hep-ph/0701198
2007-01-23
Resonantly Enhanced Axion-Photon Regeneration
We point out that photon regeneration-experiments that search for the axion, or axion-like particles, may be resonantly enhanced by employing matched Fabry-Perot optical cavities encompassing both the axion production and conversion magnetic field regions. Compared to a simple photon regeneration experiment, which uses...
[ "hep-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
17450419
quant-ph/0701168
2007-01-23
Using quantum key distribution for cryptographic purposes: a survey
The appealing feature of quantum key distribution (QKD), from a cryptographic viewpoint, is the ability to prove the information-theoretic security (ITS) of the established keys. As a key establishment primitive, QKD however does not provide a standalone security service in its own: the secret keys established by QKD a...
[ "quant-ph", "cs.CR", "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "r alléaume_1", "name": "Romain Alléaume", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "c branciard_1", "name": "Cyril Branciard", "publication_history": null, "h_index": null, "num_papers": ...
null
41127935
cond-mat/0701554
2007-01-23
Optimal finite-time processes in stochastic thermodynamics
For a small system like a colloidal particle or a single biomolecule embedded in a heat bath, the optimal protocol of an external control parameter minimizes the mean work required to drive the system from one given equilibrium state to another in a finite time. In general, this optimal protocol obeys an integro-differ...
[ "cond-mat.stat-mech", "cond-mat.soft" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
9238511
astro-ph/0701671
2007-01-24
Intrinsic galaxy alignments from the 2SLAQ and SDSS surveys: luminosity and redshift scalings and implications for weak lensing surveys
Correlations between intrinsic shear and the density field on large scales, a potentially important contaminant for cosmic shear surveys, have been robustly detected at low redshifts with bright galaxies in SDSS data. Here we present a more detailed characterization of this effect, which can cause anti-correlations bet...
[ "astro-ph" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "c hirata_1", "name": "Christopher [\"M.\"] Hirata", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "r mandelbaum_1", "name": "Rachel Mandelbaum", "publication_history": null, "h_index": null, "...
null
16719327
math/0701718
2007-01-24
Notes on the occupancy problem with infinitely many boxes: general asymptotics and power laws
This paper collects facts about the number of occupied boxes in the classical balls-in-boxes occupancy scheme with infinitely many positive frequencies: equivalently, about the number of species represented in samples from populations with infinitely many species. We present moments of this random variable, discuss asy...
[ "math.PR", "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119530297
astro-ph/0701702
2007-01-24
On the Correlation between the Magnetic Activity Levels, the Metallicities and the Radii of Low-Mass Stars
The recent burst in the number of radii measurements of very low-mass stars from eclipsing binaries and interferometry of single stars has opened more questions about what can be causing the discrepancy between the observed radii and the ones predicted by the models. The two main explanations being proposed are a corre...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
619002
q-bio/0701039
2007-01-24
Universally Sloppy Parameter Sensitivities in Systems Biology
Quantitative computational models play an increasingly important role in modern biology. Such models typically involve many free parameters, and assigning their values is often a substantial obstacle to model development. Directly measuring \emph{in vivo} biochemical parameters is difficult, and collectively fitting th...
[ "q-bio.QM", "q-bio.MN" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
12971628
math/0701668
2007-01-24
Searching for a trail of evidence in a maze
Consider a graph with a set of vertices and oriented edges connecting pairs of vertices. Each vertex is associated with a random variable and these are assumed to be independent. In this setting, suppose we wish to solve the following hypothesis testing problem: under the null, the random variables have common distribu...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[ { "corpus_id": "1175318", "num_citations": null }, { "corpus_id": "8295114", "num_citations": null } ]
[ { "author_id": "e arias-castro_1", "name": "Ery Arias-Castro", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "e candès_1", "name": "Emmanuel [\"J.\"] Candès", "publication_history": null, "h_index": null, "nu...
null
260927458
cs/0701155
2007-01-25
Data Cube: A Relational Aggregation Operator Generalizing Group-By, Cross-Tab, and Sub-Totals
Data analysis applications typically aggregate data across many dimensions looking for anomalies or unusual patterns. The SQL aggregate functions and the GROUP BY operator produce zero-dimensional or one-dimensional aggregates. Applications need the N-dimensional generalization of these operators. This paper defines th...
[ "cs.DB" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
10688316
math/0701724
2007-01-25
Finite-Time Consensus Problems for Networks of Dynamic Agents
In this paper, finite-time state consensus problems for continuous-time multi-agent systems are discussed, and two distributive protocols, which ensure that the states of agents reach an agreement in a finite time, are presented. By employing the method of finite-time Lyapunov functions, we derive conditions that guara...
[ "math.DS" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14424240
hep-th/0701236
2007-01-25
Baryonic Generating Functions
We show how it is possible to use the plethystic program in order to compute baryonic generating functions that count BPS operators in the chiral ring of quiver gauge theories living on the world volume of D branes probing a non compact CY manifold. Special attention is given to the conifold theory and the orbifold C^2...
[ "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
2316540
cs/0701157
2007-01-25
A Critique of ANSI SQL Isolation Levels
ANSI SQL-92 defines Isolation Levels in terms of phenomena: Dirty Reads, Non-Repeatable Reads, and Phantoms. This paper shows that these phenomena and the ANSI SQL definitions fail to characterize several popular isolation levels, including the standard locking implementations of the levels. Investigating the ambiguiti...
[ "cs.DB" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
43502450
astro-ph/0701752
2007-01-25
21 cm radiation - a new probe of variation in the fine structure constant
We investigate the effect of variation in the value of the fine structure constant at high redshifts (recombination > z > 30) on the absorption of the cosmic microwave background (CMB) at 21 cm hyperfine transition of the neutral atomic hydrogen. We find that the 21 cm signal is very sensitive to the variations in the ...
[ "astro-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "r khatri_2", "name": "Rishi Khatri", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "b wandelt_1", "name": "Benjamin [\"D.\"] Wandelt", "publication_history": null, "h_index": null, "num_papers...
null
119419597
astro-ph/0503397
2007-01-25
The white dwarf cooling sequence in NGC 6791
In the old, populous, and metal-rich open cluster NGC 6791 we have used deep HST/ACS images to track the white dwarf cooling sequence down to m_F606W~28.5. The white dwarf luminosity function shows a well defined peak at m_F606W~27.4, and a bending to the blue in the color--magnitude diagram. If this peak corresponds t...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1185105
astro-ph/0701779
2007-01-26
The Gemini Deep Deep Survey: VIII. When Did Early-type Galaxies Form?
We have used the Hubble Space Telescope's Advanced Camera for Surveys (Ford et al. 2003) to measure the cumulative mass density in morphologically-selected early-type galaxies over the redshift range 0.8 < z < 1.7. Our imaging data set covers four well-separated sight-lines, and is roughly intermediate (in terms of bot...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15947430
cond-mat/0701651
2007-01-26
Cooling down Levy flights
Let L(t) be a Levy flights process with a stability index \alpha\in(0,2), and U be an external multi-well potential. A jump-diffusion Z satisfying a stochastic differential equation dZ(t)=-U'(Z(t-))dt+\sigma(t)dL(t) describes an evolution of a Levy particle of an `instant temperature' \sigma(t) in an external force fie...
[ "cond-mat.stat-mech" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15839713
astro-ph/0701755
2007-01-26
Gravitational Runaway and Turbulence Driving in Star-Gas Galactic Disks
Galactic disks consist of both stars and gas. The gas is more dynamically responsive than the stars, and strongly nonlinear structures and velocities can develop in the ISM even while stellar surface density perturbations remain fractionally small. We use 2D numerical simulations to explore formation of bound clouds an...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15551259
math/0701781
2007-01-26
Learning Trigonometric Polynomials from Random Samples and Exponential Inequalities for Eigenvalues of Random Matrices
Motivated by problems arising in random sampling of trigonometric polynomials, we derive exponential inequalities for the operator norm of the difference between the sample second moment matrix $n^{-1}U^*U$ and its expectation where $U$ is a complex random $n\times D$ matrix with independent rows. These results immedia...
[ "math.PR", "math.ST", "stat.TH" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "14963349", "num_citations": null } ]
[ { "author_id": "k groechenig_0", "name": "Karlheinz Groechenig", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "b poetscher_0", "name": "Benedikt [\"M.\"] Poetscher", "publication_history": null, "h_index": null,...
null
13893657
math/0701771
2007-01-26
On the Number of Planar Orientations with Prescribed Degrees
We deal with the asymptotic enumeration of combinatorial structures on planar maps. Prominent instances of such problems are the enumeration of spanning trees, bipartite perfect matchings, and ice models. The notion of orientations with out-degrees prescribed by a function $\aa:V\to \NN$ unifies many different combinat...
[ "math.CO" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
27302648
cond-mat/0701646
2007-01-26
Entrainment transition in populations of random frequency oscillators
The entrainment transition of coupled random frequency oscillators is revisited. The Kuramoto model (global coupling) is shown to exhibit unusual sample-dependent finite size effects leading to a correlation size exponent $\bar\nu=5/2$. Simulations of locally coupled oscillators in $d$-dimensions reveal two types of fr...
[ "cond-mat.stat-mech" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
5429591
quant-ph/0701194
2007-01-26
Computation at a distance
We consider a model of computation motivated by possible limitations on quantum computers. We have a linear array of n wires, and we may perform operations only on pairs of adjacent wires. Our goal is to build a circuits that perform specified operations spanning all n wires. We show that the natural lower bound of n-1...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
16594649
math/0701761
2007-01-26
A Constructive Approach to the Estimation of Dimension Reduction Directions
In this paper, we propose two new methods to estimate the dimension-reduction directions of the central subspace (CS) by constructing a regression model such that the directions are all captured in the regression mean. Compared with the inverse regression estimation methods (e.g. Li, 1991, 1992; Cook and Weisberg, 1991...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14038083
math/0701815
2007-01-29
Higher Hopf formulae for homology via Galois Theory
We use Janelidze's Categorical Galois Theory to extend Brown and Ellis's higher Hopf formulae for homology of groups to arbitrary semi-abelian monadic categories. Given such a category A and a chosen Birkhoff subcategory B of A, thus we describe the Barr-Beck derived functors of the reflector of A onto B in terms of ce...
[ "math.AT", "math.CT" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15146258
cs/0701186
2007-01-29
Certification of bounds on expressions involving rounded operators
Gappa uses interval arithmetic to certify bounds on mathematical expressions that involve rounded as well as exact operators. Gappa generates a theorem with its proof for each bound treated. The proof can be checked with a higher order logic automatic proof checker, either Coq or HOL Light, and we have developed a larg...
[ "cs.MS" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
2327162
astro-ph/0701828
2007-01-29
SALT2: using distant supernovae to improve the use of Type Ia supernovae as distance indicators
We present an empirical model of Type Ia supernovae spectro-photometric evolution with time. The model is built using a large data set including light-curves and spectra of both nearby and distant supernovae, the latter being observed by the SNLS collaboration. We derive the average spectral sequence of Type Ia superno...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119164985
math/0701849
2007-01-29
BSDEs with stochastic Lipschitz condition and quadratic PDEs in Hilbert spaces
This paper is devoted to the study of the differentiability of solutions to real-valued backward stochastic differential equations (BSDEs for short) with quadratic generators driven by a cylindrical Wiener process. The main novelty of this problem consists in the fact that the gradient equation of a quadratic BSDE has ...
[ "math.PR" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
18000680
hep-ph/0701260
2007-01-30
Theory of the tau lepton anomalous magnetic moment
This article reviews and updates the Standard Model prediction of the tau lepton g-2. Updated QED and electroweak contributions are presented, together with new values of the leading-order hadronic term, based on the recent low energy e+ e- data from BaBar, CMD-2, KLOE and SND, and of the hadronic light-by-light contri...
[ "hep-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
36370659
cond-mat/0701757
2007-01-30
Dynamic first-order phase transition in kinetically constrained models of glasses
We show that the dynamics of kinetically constrained models of glass formers takes place at a first-order coexistence line between active and inactive dynamical phases. We prove this by computing the large-deviation functions of suitable space-time observables, such as the number of configuration changes in a trajector...
[ "cond-mat.stat-mech", "nlin.CD" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "j garrahan_1", "name": "Juan [\"P.\"] Garrahan", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "r jack_1", "name": "Robert [\"L.\"] Jack", "publication_history": null, "h_index": null, "num_pa...
null
18400453
math/0701872
2007-01-30
Dependent Lindeberg central limit theorem and some applications
In this paper, a very useful lemma (in two versions) is proved: it simplifies notably the essential step to establish a Lindeberg central limit theorem for dependent processes. Then, applying this lemma to weakly dependent processes introduced in Doukhan and Louhichi (1999), a new central limit theorem is obtained for ...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
7016001
math/0701887
2007-01-30
A new algorithm for estimating the effective dimension-reduction subspace
The statistical problem of estimating the effective dimension-reduction (EDR) subspace in the multi-index regression model with deterministic design and additive noise is considered. A new procedure for recovering the directions of the EDR subspace is proposed. Under mild assumptions, $\sqrt n$-consistency of the propo...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference", "target.key_reference" ]
[ { "corpus_id": "16756174", "num_citations": null } ]
[ { "author_id": "a dalalyan_1", "name": "Arnak [\"S.\"] Dalalyan", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a juditsky_1", "name": "Anatoli [\"B.\"] Juditsky", "publication_history": null, "h_index": null, ...
null
16988552
astro-ph/0701850
2007-01-30
Millisecond dips in the RXTE/PCA light curve of Sco X-1 and TNO occultation
Millisecond dips in the RXTE/PCA light curve of Sco X-1 were reported recently (Chang et al. 2006), which were interpreted as the occultation of X-rays from Sco X-1 caused by Trans-Neptunian Objects (TNO) of hundred-meter size. Inconclusive signatures of possible instrumental effects in many of these dip events related...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14316364
math/0701886
2007-01-30
Ricci curvature of Markov chains on metric spaces
We define the Ricci curvature of Markov chains on metric spaces as a local contraction coefficient of the random walk acting on the space of probability measures equipped with a Wasserstein transportation distance. For Brownian motion on a Riemannian manifold this gives back the value of Ricci curvature of a tangent ve...
[ "math.PR", "math.MG" ]
null
[ "target.author.publication_history.key_reference", "target.key_reference" ]
null
null
null
10220233
math/0701875
2007-01-30
Classical and Variational Differentiability of BSDEs with quadratic growth
We consider Backward Stochastic Differential Equations (BSDE) with generators that grow quadratically in the control variable. In a more abstract setting, we first allow both the terminal condition and the generator to depend on a vector parameter $x$. We give sufficient conditions for the solution pair of the BSDE to ...
[ "math.PR" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "s ankirchner_1", "name": "Stefan Ankirchner", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "p imkeller_1", "name": "Peter Imkeller", "publication_history": null, "h_index": null, "num_papers"...
null
8442845
physics/0701337
2007-01-30
The dynamics of transition to turbulence in plane Couette flow
In plane Couette flow, the incompressible fluid between two plane parallel walls is driven by the motion of those walls. The laminar solution, in which the streamwise velocity varies linearly in the wall-normal direction, is known to be linearly stable at all Reynolds numbers ($Re$). Yet, in both experiments and comput...
[ "physics.flu-dyn", "physics.comp-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14473955
astro-ph/0701843
2007-01-30
A CO J=3-2 Survey of the Galactic Center
We have surveyed the central molecular zone (CMZ) of our Galaxy in the CO J=3-2 line with the Atacama Submillimeter-wave Telescope Experiment (ASTE). Molecular gas in the Galactic center shows high J=3-2/J=1-0 intensity ratio (~ 0.9) while gas in the spiral arms in the Galactic disk shows the lower ratio (~ 0.5). The h...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
2855922
cs/0701197
2007-01-30
On Delayed Sequential Coding of Correlated Sources
Motivated by video coding applications, the problem of sequential coding of correlated sources with encoding and/or decoding frame-delays is studied. The fundamental tradeoffs between individual frame rates, individual frame distortions, and encoding/decoding frame-delays are derived in terms of a single-letter informa...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
9989562
math/0701907
2007-01-31
Kernel methods in machine learning
We review machine learning methods employing positive definite kernels. These methods formulate learning and estimation problems in a reproducing kernel Hilbert space (RKHS) of functions defined on the data domain, expanded in terms of a kernel. Working in linear spaces of function has the benefit of facilitating the c...
[ "math.ST", "math.PR", "stat.TH" ]
null
[ "target.author.publication_history.key_reference", "target.key_reference" ]
null
null
null
119356917
hep-ph/0701263
2007-01-31
Decay constants and radiative decays of heavy mesons in light-front quark model
We investigate the magnetic dipole decays $V\to P\gamma$ of various heavy-flavored mesons such as $(D,D^*,D_s,D^{*}_s,\eta_c, J/\psi)$ and $(B,B^*,B_s,B^*_s,\eta_b,\Upsilon)$ using the light-front quark model constrained by the variational principle for the QCD-motivated effective Hamiltonian. The momentum dependent fo...
[ "hep-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
5974912
math/0702004
2007-01-31
Convergent Sequences of Dense Graphs I: Subgraph Frequencies, Metric Properties and Testing
We consider sequences of graphs and define various notions of convergence related to these sequences: ``left convergence'' defined in terms of the densities of homomorphisms from small graphs into the graphs of the sequence, and ``right convergence'' defined in terms of the densities of homomorphisms from the graphs of...
[ "math.CO" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119521610
cond-mat/0701763
2007-01-31
Probability currents as principal characteristics in the statistical mechanics of non-equilibrium steady states
One of the key features of non-equilibrium steady states (NESS) is the presence of nontrivial probability currents. We propose a general classification of NESS in which these currents play a central distinguishing role. As a corollary, we specify the transformations of the dynamic transition rates which leave a given N...
[ "cond-mat.stat-mech" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
55192933
cond-mat/0701777
2007-01-31
CO oxidation at Pd(100): A first-principles constrained thermodynamics study
The possible formation of oxides or thin oxide films (surface oxides) on late transition metal surfaces is recently being recognized as an essential ingredient when aiming to understand catalytic oxidation reactions under technologically relevant gas phase conditions. Using the CO oxidation at Pd(100) as example, we in...
[ "cond-mat.mtrl-sci" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "j rogal_1", "name": "Jutta Rogal", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "k reuter_1", "name": "Karsten Reuter", "publication_history": null, "h_index": null, "num_papers": null, "...
null
2209908
cs/0702014
2007-02-01
Probabilistic Analysis of Linear Programming Decoding
We initiate the probabilistic analysis of linear programming (LP) decoding of low-density parity-check (LDPC) codes. Specifically, we show that for a random LDPC code ensemble, the linear programming decoder of Feldman et al. succeeds in correcting a constant fraction of errors with high probability. The fraction of co...
[ "cs.IT", "cs.DM", "math.IT" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "c daskalakis_1", "name": "Constantinos Daskalakis", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a dimakis_1", "name": "Alexandros [\"G.\"] Dimakis", "publication_history": null, "h_index": null...
null
17159511
astro-ph/0702008
2007-02-01
Variable VHE gamma-ray emission from Markarian 501
The blazar Markarian 501 (Mrk 501) was observed at energies above 0.10 TeV with the MAGIC telescope from May through July 2005. The high sensitivity of the instrument enabled the determination of the flux and spectrum of the source on a night-by-night basis. Throughout our observational campaign, the flux from Mrk 501 ...
[ "astro-ph" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "j albert_2", "name": "J. Albert", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "e aliu_1", "name": "Ester Aliu", "publication_history": null, "h_index": null, "num_papers": null, "num_cit...
null
3450
cs/0702003
2007-02-01
Expert Programming Knowledge: a Schema-Based Approach
The topic of this chapter is the role of expert programming knowledge in the understanding activity. In the "schema-based approach", the role of semantic structures is emphasized whereas, in the "control-flow approach", the role of syntactic structures is emphasized. Data which support schema-based models of understand...
[ "cs.HC" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
502158
cs/0702015
2007-02-01
Network Coding for Distributed Storage Systems
Peer-to-peer distributed storage systems provide reliable access to data through redundancy spread over nodes across the Internet. A key goal is to minimize the amount of bandwidth used to maintain that redundancy. Storing a file using an erasure code, in fragments spread across nodes, promises to require less redundan...
[ "cs.IT", "cs.NI", "math.IT" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "a dimakis_1", "name": "Alexandros [\"G.\"] Dimakis", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "b godfrey_1", "name": "Brighten Godfrey", "publication_history": null, "h_index": null, "num...
null
2366924
astro-ph/0702040
2007-02-01
Optimising Baryon Acoustic Oscillation Surveys - I: Testing the concordance LCDM cosmology
We optimize the design of future spectroscopic redshift surveys for constraining the dark energy via precision measurements of the baryon acoustic oscillations (BAO), with particular emphasis on the design of the Wide-Field Multi-Object Spectrograph (WFMOS). We develop a model that predicts the number density of possib...
[ "astro-ph" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "6906627", "num_citations": null }, { "corpus_id": "8068483", "num_citations": null }, { "corpus_id": "789798", "num_citations": null }, { "corpus_id": "4834543", "num_citations": null }, { "corpus_id": "15640044", "num_citations": null } ]
[ { "author_id": "d parkinson_1", "name": "David Parkinson", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "c blake_3", "name": "Chris Blake", "publication_history": null, "h_index": null, "num_papers": null, ...
null
2381079
cs/0702009
2007-02-01
On Evaluating the Rate-Distortion Function of Sources with Feed-Forward and the Capacity of Channels with Feedback
We study the problem of computing the rate-distortion function for sources with feed-forward and the capacity for channels with feedback. The formulas (involving directed information) for the optimal rate-distortion function with feed-forward and channel capacity with feedback are multi-letter expressions and cannot be...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "r venkataramanan_2", "name": "Ramji Venkataramanan", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "s pradhan_7", "name": "S. Sandeep Pradhan", "publication_history": null, "h_index": null, "n...
null
14493693
cs/0702018
2007-02-02
Estimation of the Rate-Distortion Function
Motivated by questions in lossy data compression and by theoretical considerations, we examine the problem of estimating the rate-distortion function of an unknown (not necessarily discrete-valued) source from empirical data. Our focus is the behavior of the so-called "plug-in" estimator, which is simply the rate-disto...
[ "cs.IT", "math.IT", "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference", "target.key_reference" ]
null
null
null
14432026
astro-ph/0702077
2007-02-02
Constraints on the steady and pulsed very high energy gamma-ray emission from observations of PSR B1951+32/CTB 80 with the MAGIC Telescope
We report on very high energy gamma-observations with the MAGIC Telescope of the pulsar PSR B1951+32 and its associated nebula, CTB 80. Our data constrain the cutoff energy of the pulsar to be less than 32 GeV, assuming the pulsed gamma-ray emission to be exponentially cut off. The upper limit on the flux of pulsed gam...
[ "astro-ph" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "15581850", "num_citations": null }, { "corpus_id": "118945201", "num_citations": null }, { "corpus_id": "121038776", "num_citations": null } ]
[ { "author_id": "j albert_2", "name": "Justin [\"E\"] Albert", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "e aliu_1", "name": "Ester Aliu", "publication_history": null, "h_index": null, "num_papers": null, ...
null
53589837
cond-mat/0702044
2007-02-02
Temperature-extended Jarzynski relation: Application to the numerical calculation of the surface tension
We consider a generalization of the Jarzynski relation to the case where the system interacts with a bath for which the temperature is not kept constant but can vary during the transformation. We suggest to use this relation as a replacement to the thermodynamic perturbation method or the Bennett method for the estimat...
[ "cond-mat.stat-mech", "hep-lat" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
118911719
cond-mat/0702047
2007-02-02
Rheology of giant micelles
Giant micelles are elongated, polymer-like objects created by the self-assembly of amphiphilic molecules (such as detergents) in solution. Giant micelles are typically flexible, and can become highly entangled even at modest concentrations. The resulting viscoelastic solutions show fascinating flow behaviour (rheology)...
[ "cond-mat.soft" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
118840524
quant-ph/0702021
2007-02-02
Bell inequalities: many questions, a few answers
What can be more fascinating than {\it experimental metaphysics}, to quote one of Abner Shimony's enlightening expressions? Bell inequalities are at the heart of the study of nonlocality. I present a list of open questions, organised in three categories: fundamental; linked to experiments; and exploring nonlocality as ...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
44834424
math/0702039
2007-02-02
A Deterministic Approximation Algorithm for Computing a Permanent of a 0,1 matrix
We construct a deterministic approximation algorithm for computing a permanent of a $0,1$ $n$ by $n$ matrix to within a multiplicative factor $(1+\epsilon)^n$, for arbitrary $\epsilon>0$. When the graph underlying the matrix is a constant degree expander our algorithm runs in polynomial time (PTAS). In the general case...
[ "math.CO" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "d gamarnik_1", "name": "David Gamarnik", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "d katz_1", "name": "Dmitriy [\"A.\"] Katz", "publication_history": null, "h_index": null, "num_papers": ...
null
10402235
math/0702066
2007-02-03
Minimax problems related to cup powers and Steenrod squares
If F is a family of mod 2 flat k-cycles in the unit n-ball, we lower bound the maximal volume of any cycle in F in terms of the homology class of F in the space of all cycles. We give examples to show that these lower bounds are fairly sharp.
[ "math.DG" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
17593207
math/0702064
2007-02-03
On the monotonicity of positive invariant harmonic functions in the unit ball
A monotonicity property of Harnack inequality is proved for positive invariant harmonic functions in the unit ball.
[ "math.CA", "math.AP" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "y pan_44", "name": "Yifei Pan", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "m wang_198", "name": "Mei Wang", "publication_history": null, "h_index": null, "num_papers": null, "num_citat...
null
9498051
math/0702120
2007-02-05
Nonlinear functional models for functional responses in reproducing kernel Hilbert spaces
An extension of reproducing kernel Hilbert space (RKHS) theory provides a new framework for modeling functional regression models with functional responses. The approach only presumes a general nonlinear regression structure as opposed to previously studied linear regression models. Generalized cross-validation (GCV) i...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
11027517
hep-th/0702028
2007-02-05
On the Strong Coupling Scaling Dimension of High Spin Operators
We give an exact analytic solution of the strong coupling limit of the integral equation which was recently proposed to describe the universal scaling function of high spin operators in N = 4 gauge theory. The solution agrees with the prediction from string theory, confirms the earlier numerical analysis and provides a...
[ "hep-th" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "1822875", "num_citations": null }, { "corpus_id": "15227034", "num_citations": null } ]
[ { "author_id": "l alday_0", "name": "Luis [\"F.\"] Alday", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "g arutyunov_0", "name": "Gleb [\"E.\"] Arutyunov", "publication_history": null, "h_index": null, "num_...
null
18608669
math/0702094
2007-02-05
Reparametrization invariant norms
This paper explores the concept of reparametrization invariant norm (RPI-norm), that is any norm invariant under composition with diffeomorphisms. We prove the existence of an infinite family of RPI-norms, called standard RPI-norms, for which we exhibit both an integral and a discrete characterization. Our main result ...
[ "math.FA" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "p frosini_1", "name": "Patrizio Frosini", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "c landi_1", "name": "Claudia Landi", "publication_history": null, "h_index": null, "num_papers": null, ...
null
14027490
cond-mat/0702109
2007-02-05
Enskog Theory for Polydisperse Granular Mixtures. I. Navier-Stokes order Transport
A hydrodynamic description for an $s$-component mixture of inelastic, smooth hard disks (two dimensions) or spheres (three dimensions) is derived based on the revised Enskog theory for the single-particle velocity distribution functions. In this first portion of the two-part series, the macroscopic balance equations fo...
[ "cond-mat.stat-mech", "cond-mat.soft" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14351212
physics/0702042
2007-02-05
Surface Conservation Laws at Microscopically Diffuse Interfaces
In studies of interfaces with dynamic chemical composition, bulk and interfacial quantities coupled via surface conservation laws of excess surface quantities. While this approach is for microscopically sharp interfaces, its applicability in the context of microscopically diffuse is less theoretically well-established....
[ "physics.chem-ph" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "k chu_1", "name": "Kevin [\"T.\"] Chu", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "m bazant_1", "name": "Martin [\"Z.\"] Bazant", "publication_history": null, "h_index": null, "num_papers"...
null
13978940
cond-mat/0702110
2007-02-05
Enskog Theory for Polydisperse Granular Mixtures II. Sonine Polynomial Approximation
The linear integral equations defining the Navier-Stokes (NS) transport coefficients for polydisperse granular mixtures of smooth inelastic hard disks or spheres are solved by using the leading terms in a Sonine polynomial expansion. Explicit expressions for all the NS transport coefficients are given in terms of the s...
[ "cond-mat.stat-mech", "cond-mat.soft" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
55684032
astro-ph/0702176
2007-02-06
Nucleosynthesis and Remnants in Massive Stars of Solar Metallicity
Hans Bethe contributed in many ways to our understanding of the supernovae that happen in massive stars, but, to this day, a first principles model of how the explosion is energized is lacking. Nevertheless, a quantitative theory of nucleosynthesis is possible. We present a survey of the nucleosynthesis that occurs in ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
17267294
physics/0702056
2007-02-06
Rediscovering the Co-occurrence Principles of Vowel Inventories: A Complex Network Approach
In this work, we attempt to capture patterns of co-occurrence across vowel systems and at the same time figure out the nature of the force leading to the emergence of such patterns. For this purpose we define a weighted network where the vowels are the nodes and an edge between two nodes (read vowels) signify their co-...
[ "physics.soc-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "a mukherjee_13", "name": "Animesh Mukherjee", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "m choudhury_1", "name": "Monojit Choudhury", "publication_history": null, "h_index": null, "num_pap...
null
7386649
cs/0702038
2007-02-06
Genetic Representations for Evolutionary Minimization of Network Coding Resources
We demonstrate how a genetic algorithm solves the problem of minimizing the resources used for network coding, subject to a throughput constraint, in a multicast scenario. A genetic algorithm avoids the computational complexity that makes the problem NP-hard and, for our experiments, greatly improves on sub-optimal sol...
[ "cs.NE", "cs.NI" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "m kim_70", "name": "Minkyu Kim", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "v aggarwal_1", "name": "Varun Aggarwal", "publication_history": null, "h_index": null, "num_papers": null, "...
null
14097319
astro-ph/0702140
2007-02-06
The Stability of the Point Spread Function of the Advanced Camera for Surveys on the Hubble Space Telescope and Implications for Weak Gravitational Lensing
(abridged) We examine the spatial and temporal stability of the HST ACS Wide Field Camera (WFC) point spread function (PSF) using the two square degree COSMOS survey. We show that stochastic aliasing of the PSF necessarily occurs during `drizzling'. This aliasing is maximal if the output pixel scale is equal to the inp...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "j rhodes_1", "name": "Jason [\"D.\"] Rhodes", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "r massey_2", "name": "Richard [\"J.\"] Massey", "publication_history": null, "h_index": null, "num_...
null
15783301
math/0702156
2007-02-06
Self-similar solutions of semilinear wave equations with a focusing nonlinearity
We prove that in three space dimensions a nonlinear wave equation $u_{tt}-\Delta u = u^p$ with $p\geq 7$ being an odd integer has a countable family of regular spherically symmetric self-similar solutions.
[ "math.AP", "math-ph", "math.MP" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1278835
cs/0702037
2007-02-07
Evolutionary Approaches to Minimizing Network Coding Resources
We wish to minimize the resources used for network coding while achieving the desired throughput in a multicast scenario. We employ evolutionary approaches, based on a genetic algorithm, that avoid the computational complexity that makes the problem NP-hard. Our experiments show great improvements over the sub-optimal ...
[ "cs.NI", "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "m kim_70", "name": "Minkyu Kim", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "m médard_1", "name": "Muriel Médard", "publication_history": null, "h_index": null, "num_papers": null, "num...
null
16952616
math/0702189
2007-02-07
Enumerative geometry of Calabi-Yau 4-folds
Gromov-Witten theory is used to define an enumerative geometry of curves in Calabi-Yau 4-folds. The main technique is to find exact solutions to moving multiple cover integrals. The resulting invariants are analogous to the BPS counts of Gopakumar and Vafa for Calabi-Yau 3-folds. We conjecture the 4-fold invariants to ...
[ "math.AG", "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
189755
cs/0702044
2007-02-07
Transmission Capacity of Ad Hoc Networks with Spatial Diversity
This paper derives the outage probability and transmission capacity of ad hoc wireless networks with nodes employing multiple antenna diversity techniques, for a general class of signal distributions. This analysis allows system performance to be quantified for fading or non-fading environments. The transmission capaci...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
13689331
gr-qc/0702039
2007-02-07
Upper limits on gravitational wave emission from 78 radio pulsars
We present upper limits on the gravitational wave emission from 78 radio pulsars based on data from the third and fourth science runs of the LIGO and GEO600 gravitational wave detectors. The data from both runs have been combined coherently to maximise sensitivity. For the first time pulsars within binary (or multiple)...
[ "gr-qc", "astro-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "b abbott_2", "name": "Brad Abbott", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "r abbott_2", "name": "Richard Abbott", "publication_history": null, "h_index": null, "num_papers": null, ...
null