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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8070959 | 0803.2963 | 2008-03-20 | Consistency of cross validation for comparing regression procedures | Theoretical developments on cross validation (CV) have mainly focused on selecting one among a list of finite-dimensional models (e.g., subset or order selection in linear regression) or selecting a smoothing parameter (e.g., bandwidth for kernel smoothing). However, little is known about consistency of cross validatio... | [
"math.ST",
"stat.TH"
] | null | [
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2592206 | 0803.2955 | 2008-03-20 | Locked constraint satisfaction problems | We introduce and study the random "locked" constraint satisfaction problems. When increasing the density of constraints, they display a broad "clustered" phase in which the space of solutions is divided into many isolated points. While the phase diagram can be found easily, these problems, in their clustered phase, are... | [
"cond-mat.stat-mech",
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"cs.CC"
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8280946 | 0803.3093 | 2008-03-20 | Diversity and relative arbitrage in equity markets | A financial market is called "diverse" if no single stock is ever allowed to dominate the entire market in terms of relative capitalization. In the context of the standard Ito-process model initiated by Samuelson (1965) we formulate this property (and the allied, successively weaker notions of "weak diversity" and "asy... | [
"q-fin.PM",
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] | null | [
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] | null | null | null |
19150457 | 0803.3022 | 2008-03-20 | Averaging of Nonlinearity Management with Dissipation | Motivated by recent experiments in optics and atomic physics, we derive an averaged nonlinear partial differential equation describing the dynamics of the complex field in a nonlinear Schroedinger model in the presence of a periodic nonlinearity and a periodically-varying dissipation coefficient. The incorporation of d... | [
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"name": "Kody [\"J.\",\"H.\"] Law",
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119243494 | 0803.3086 | 2008-03-20 | A Solid-State System for High Temporal Resolution Fluorescence Lifetime Measurements | A system for time-correlated single photon counting applications based on CMOS single photon avalanche diodes is presented. An instrument response function of 79 ps allows a fluorescence decay of high-affinity Ca2+ indicator Oregon Green BAPTA-1 to be analyzed with unprecedented temporal resolution in the two-photon ex... | [
"cond-mat.soft"
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"name": "Dmitri [\"L.\"] Boiko",
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17558308 | 0803.2984 | 2008-03-20 | Conditional density estimation in a regression setting | Regression problems are traditionally analyzed via univariate characteristics like the regression function, scale function and marginal density of regression errors. These characteristics are useful and informative whenever the association between the predictor and the response is relatively simple. More detailed infor... | [
"math.ST",
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15766192 | 0803.3209 | 2008-03-21 | Transiting exoplanets from the CoRoT space mission III. The spectroscopic transit of CoRoT-Exo-2b with SOPHIE and HARPS | We report on the spectroscopic transit of the massive hot-Jupiter CoRoT-Exo-2b observed with the high-precision spectrographs SOPHIE and HARPS. By modeling the radial velocity anomaly occurring during the transit due to the Rossiter-McLaughlin (RM) effect, we determine the sky-projected angle between the stellar spin a... | [
"astro-ph"
] | null | [
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"name": "François Bouchy",
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"name": "D. Queloz",
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16124221 | 0803.3111 | 2008-03-21 | A few remarks on the operator norm of random Toeplitz matrices | We present some results concerning the almost sure behaviour of the operator norm or random Toeplitz matrices, including the law of large numbers for the norm, normalized by its expectation (in the i.i.d. case). As tools we present some concentration inequalities for suprema of empirical processes, which are refinement... | [
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2554119 | 0803.3237 | 2008-03-21 | Memory effects in quantum channel discrimination | We consider quantum-memory assisted protocols for discriminating quantum channels. We show that for optimal discrimination of memory channels, memory assisted protocols are needed. This leads to a new notion of distance for channels with memory. For optimal discrimination and estimation of sets of unitary channels memo... | [
"quant-ph"
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{
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"name": "Giacomo [\"Mauro\"] D’Ariano",
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... | null |
14690722 | 0803.3134 | 2008-03-21 | Discussion: A tale of three cousins: Lasso, L2Boosting and Dantzig | Discussion of ``The Dantzig selector: Statistical estimation when $p$ is much larger than $n$'' by Emmanuel Candes and Terence Tao [math/0506081] | [
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"name": "Gf [\"Quiroz\"] Rocha",
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34332297 | 0803.3206 | 2008-03-21 | Influence of Mo on the Fe:Mo:C nano-catalyst thermodynamics for single-walled carbon nanotube growth | We explore the role of Mo in Fe:Mo nanocatalyst thermodynamics for low-temperature chemical vapor deposition growth of single walled carbon nanotubes (SWCNTs). By using the size-pressure approximation and ab initio modeling, we prove that for both Fe-rich (~80% Fe or more) and Mo-rich (~50% Mo or more) Fe:Mo clusters, ... | [
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5894591 | 0803.3130 | 2008-03-21 | Discussion: The Dantzig selector: statistical estimation when $p$ is much larger than $n$ | Discussion of ``The Dantzig selector: Statistical estimation when $p$ is much larger than $n$'' [math/0506081] | [
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88516653 | 0803.3127 | 2008-03-21 | Discussion: The Dantzig selector: Statistical estimation when $p$ is much larger than $n$ | Discussion of ``The Dantzig selector: Statistical estimation when $p$ is much larger than $n$'' [math/0506081] | [
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"name": "Jinchi Lv",
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1319460 | 0803.3191 | 2008-03-21 | Reduced carbon solubility in Fe nano-clusters and implications for the growth of single-walled carbon nanotubes | Various diameters of alumina-supported Fe catalysts are used to grow single-walled carbon nanotubes (SWCNTs) with chemical vapor decomposition. We find that the reduction of the catalyst size requires an increase of the minimum temperature necessary for the growth. We address this phenomenon in terms of solubility of C... | [
"cond-mat.mtrl-sci"
] | null | [
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{
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{
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26468690 | 0803.3151 | 2008-03-21 | Equivalence of critical scaling laws for many-body entanglement in the Lipkin-Meshkov-Glick model | We establish a relation between several entanglement properties in the Lipkin-Meshkov-Glick model, which is a system of mutually interacting spins embedded in a magnetic field. We provide analytical proofs that the single-copy entanglement and the global geometric entanglement of the ground state close to and at critic... | [
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] | null | [
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{
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"name": "Sébastien Dusuel",
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"... | null |
926667 | 0803.3256 | 2008-03-22 | Search for W-prime boson resonances decaying to a top quark and a bottom quark | We search for the production of a heavy W-prime gauge boson that decays to third generation quarks in 0.9 fb-1 of ppbar collisions at sqrt{s} = 1.96 TeV, collected with the D0 detector at the Fermilab Tevatron collider. We find no significant excess in the final-state invariant mass distribution and set upper limits on... | [
"hep-ex"
] | null | [
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{
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"author_id": "b abbott_2",
"name": "B. Abbott",
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55026802 | 0803.3251 | 2008-03-22 | Stability of Quantized Vortices in a Bose-Einstein Condensate Confined in an Optical Lattice | We investigate the existence and especially the linear stability of single and multiple-charge quantized vortex states of nonlinear Schroedinger equations in the presence of a periodic and a parabolic potential in two spatial dimensions. The study is motivated by the examination of pancake-shaped Bose-Einstein condensa... | [
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] | null | [
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{
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"author_id": "l qiao_7",
"name": "Liang Qiao",
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"h_index": null,
"num_papers": null,
... | null |
15266903 | 0803.3247 | 2008-03-22 | Galaxy Zoo: The large-scale spin statistics of spiral galaxies in the Sloan Digital Sky Survey | We re-examine the evidence for a violation of large-scale statistical isotropy in the distribution of projected spin vectors of spiral galaxies. We have a sample of $\sim 37,000$ spiral galaxies from the Sloan Digital Sky Survey, with their line of sight spin direction confidently classified by members of the public th... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16639131 | 0803.3285 | 2008-03-22 | Branching Process approach for 2-SAT thresholds | It is well known that, as $n$ tends to infinity, the probability of satisfiability for a random 2-SAT formula on $n$ variables, where each clause occurs independently with probability $\alpha/2n$, exhibits a sharp threshold at $\alpha=1$. We study a more general 2-SAT model in which each clause occurs independently but... | [
"math.PR"
] | null | [
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] | [] | [
{
"author_id": "e mossel_1",
"name": "Elchanan Mossel",
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},
{
"author_id": "a sen_5",
"name": "Arnab Sen",
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"h_index": null,
"num_papers": null,
"num... | null |
629472 | 0803.3408 | 2008-03-23 | Multivariate analysis and Jacobi ensembles: largest eigenvalue, Tracy--Widom limits and rates of convergence | Let $A$ and $B$ be independent, central Wishart matrices in $p$ variables with common covariance and having $m$ and $n$ degrees of freedom, respectively. The distribution of the largest eigenvalue of $(A+B)^{-1}B$ has numerous applications in multivariate statistics, but is difficult to calculate exactly. Suppose that ... | [
"math.ST",
"math.PR",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14396463 | 0803.3441 | 2008-03-24 | SiFTO: An Empirical Method for Fitting SNe Ia Light Curves | We present SiFTO, a new empirical method for modeling type Ia supernovae (SNe Ia) light curves by manipulating a spectral template. We make use of high-redshift SN observations when training the model, allowing us to extend it bluer than rest frame U. This increases the utility of our high-redshift SN observations by a... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16440948 | 0803.3215 | 2008-03-24 | Observations of the Naked-Eye GRB 080319B: Implications of Nature's Brightest Explosion | The first gamma-ray burst (GRB) confirmed to be bright enough to be seen with the naked eye, GRB 080319B at redshift z = 0.937, allowed for exquisite follow-up observations across the electromagnetic spectrum. We present our detailed optical and infrared observations of the afterglow, consisting of over 5000 images sta... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10979195 | 0803.3357 | 2008-03-24 | The Keck Planet Search: Detectability and the Minimum Mass and Orbital Period Distribution of Extrasolar Planets | We analyze 8 years of precise radial velocity measurements from the Keck Planet Search, characterizing the detection threshold, selection effects, and completeness of the survey. We carry out a systematic search for planets by assessing the false alarm probability associated with Keplerian orbit fits to the data. This ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
14497052 | 0803.3410 | 2008-03-24 | Fast Variability of Nonthermal X-Ray Emission in Cassiopeia A: Probing Electron Acceleration in Reverse-Shocked Ejecta | Recent discovery of the year-scale variability in the synchrotron X-ray emission of the supernova remnant (SNR) RX J1713.7-3946 has initiated our study of multi-epoch X-ray images and spectra of the young SNR Cassiopeia A based on the Chandra archive data taken in 2000, 2002, and 2004. We have found year-scale time var... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
3118889 | 0803.3490 | 2008-03-24 | Robustness and Regularization of Support Vector Machines | We consider regularized support vector machines (SVMs) and show that they are precisely equivalent to a new robust optimization formulation. We show that this equivalence of robust optimization and regularization has implications for both algorithms, and analysis. In terms of algorithms, the equivalence suggests more g... | [
"cs.LG",
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{
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] | [
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{
"author_id": "c caramanis_1",
"name": "Constantine Caramanis",
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"num_papers": null,
... | null |
119234411 | 0803.3386 | 2008-03-24 | Exact solution of mean geodesic distance for Vicsek fractals | The Vicsek fractals are one of the most interesting classes of fractals and the study of their structural properties is important. In this paper, the exact formula for the mean geodesic distance of Vicsek fractals is found. The quantity is computed precisely through the recurrence relations derived from the self-simila... | [
"cond-mat.dis-nn"
] | null | [
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] | [] | [
{
"author_id": "z zhang_150",
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{
"author_id": "s zhou_53",
"name": "Shuigeng Zhou",
"publication_history": null,
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"num_papers": null,
... | null |
25964793 | 0803.3507 | 2008-03-25 | Spherically averaged versus angle-dependent interactions in quadrupolar fluids | Employing simplified models in computer simulation is on the one hand often enforced by computer time limitations but on the other hand it offers insights into the molecular properties determining a given physical phenomenon. We employ this strategy to the determination of the phase behaviour of quadrupolar fluids, whe... | [
"cond-mat.stat-mech"
] | null | [
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] | [] | [
{
"author_id": "b mognetti_1",
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{
"author_id": "m oettel_1",
"name": "Martin Oettel",
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13903654 | 0803.3645 | 2008-03-25 | A New Sphere-Packing Bound for Maximal Error Exponent for Multiple-Access Channels | In this work, a new lower bound for the maximal error probability of a two-user discrete memoryless (DM) multiple-access channel (MAC) is derived. This is the first bound of this type that explicitly imposes independence of the users' input distributions (conditioned on the time-sharing auxiliary variable) and thus res... | [
"cs.IT",
"math.IT"
] | null | [
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] | null | null | null |
9183800 | 0803.3657 | 2008-03-25 | Improved Lower Bounds for Constant GC-Content DNA Codes | The design of large libraries of oligonucleotides having constant GC-content and satisfying Hamming distance constraints between oligonucleotides and their Watson-Crick complements is important in reducing hybridization errors in DNA computing, DNA microarray technologies, and molecular bar coding. Various techniques h... | [
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"q-bio.GN",
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] | null | [
"target.author.publication_history"
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{
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{
"author_id": "s ling_2",
"name": "San Ling",
"publication_history": null,
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"... | null |
17088881 | 0803.3552 | 2008-03-25 | Two-integral distribution functions for axisymmetric stellar systems with separable densities | We show different expressions of distribution functions (DFs) which depend only on the two classical integrals of the energy and the magnitude of the angular momentum with respect to the axis of symmetry for stellar systems with known axisymmetric densities. The density of the system is required to be a product of func... | [
"astro-ph",
"math-ph",
"math.MP"
] | null | [
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] | null | null | null |
5873943 | 0803.3531 | 2008-03-25 | A New Upper Bound for Max-2-Sat: A Graph-Theoretic Approach | In {\sc MaxSat}, we ask for an assignment which satisfies the maximum number of clauses for a boolean formula in CNF. We present an algorithm yielding a run time upper bound of $O^*(2^{\frac{1}{6.2158}})$ for {\sc Max-2-Sat} (each clause contains at most 2 literals), where $K$ is the number of clauses. The run time has... | [
"cs.DS",
"cs.CC",
"cs.DM"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
19014925 | 0803.3453 | 2008-03-25 | Halo Assembly Bias in Hierarchical Structure Formation | We investigate the origin of halo assembly bias, the dependence of halo clustering on assembly history. We relate halo assembly to peak properties measured in the Lagrangian space of the initial linear Gaussian random density field, and show how these same Lagrangian properties determine large-scale bias. We focus on t... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18121234 | 0803.3638 | 2008-03-25 | Distances from Stellar Kinematics for Peculiar Virgo Cluster Spiral Galaxies | We present distance estimates for eleven peculiar Virgo cluster spiral galaxies based on measurements of the stellar kinematics of their central 2 kpc. Stellar circular velocities were obtained using two-integral dynamical models. Distances were obtained by comparing, at each radius, the stellar circular velocities wit... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18385640 | 0803.3539 | 2008-03-25 | Reinforcement Learning by Value Gradients | The concept of the value-gradient is introduced and developed in the context of reinforcement learning. It is shown that by learning the value-gradients exploration or stochastic behaviour is no longer needed to find locally optimal trajectories. This is the main motivation for using value-gradients, and it is argued t... | [
"cs.NE",
"cs.AI"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
534480 | 0803.3504 | 2008-03-25 | Local Polynomial Estimation for Sensitivity Analysis on Models With Correlated Inputs | Sensitivity indices when the inputs of a model are not independent are estimated by local polynomial techniques. Two original estimators based on local polynomial smoothers are proposed. Both have good theoretical properties which are exhibited and also illustrated through analytical examples. They are used to carry ou... | [
"stat.ME",
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118713405 | 0803.3795 | 2008-03-26 | Collider Signals of Maximal Flavor Violation: Same-Sign Leptons from Same-Sign Tops at the Tevatron | In models of maximal flavor violation (MxFV) there is at least one new scalar $\Phi_{FV}$ which couples to the quarks via $\Phi_{FV} q_i q_j \propto \xi_{ij}$ where $\xi_{i3},\xi_{3i} \sim V_{tb}$ for $i = 1,2$ and $\xi_{33} \sim V_{td}$ and $V$ is the CKM matrix. In this article, we explore the potential phenomenologi... | [
"hep-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "s bar-shalom_1",
"name": "Shaouly Bar-Shalom",
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{
"author_id": "a rajaraman_2",
"name": "Arvind Rajaraman",
"publication_history": null,
"h_index": null,
"num_pap... | null |
2917463 | 0803.3658 | 2008-03-26 | The Sizes of Optimal q-Ary Codes of Weight Three and Distance Four: A Complete Solution | This correspondence introduces two new constructive techniques to complete the determination of the sizes of optimal q-ary codes of constant weight three and distance four. | [
"cs.IT",
"cs.DM",
"math.CO",
"math.IT"
] | null | [
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{
"author_id": "y chee_1",
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{
"author_id": "s dau_1",
"name": "Son [\"Hoang\"] Dau",
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"num_papers": n... | null |
9168701 | 0803.3750 | 2008-03-26 | The Fourier spectrum of critical percolation | Consider the indicator function $f$ of a two-dimensional percolation crossing event. In this paper, the Fourier transform of $f$ is studied and sharp bounds are obtained for its lower tail in several situations. Various applications of these bounds are derived. In particular, we show that the set of exceptional times o... | [
"math.PR",
"math-ph",
"math.CA",
"math.MP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17907623 | 0803.3794 | 2008-03-26 | A Multiply Imaged Luminous Infrared Galaxy Behind the Bullet Cluster | We present evidence for a Spitzer-selected luminous infrared galaxy (LIRG) behind the Bullet Cluster. The galaxy, originally identified in IRAC photometry as a multiply imaged source, has a spectral energy distribution consistent with a highly extincted (A_V~3.3), strongly star-forming galaxy at z=2.7. Using our strong... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6010411 | 0803.3816 | 2008-03-26 | Approaching the Capacity of Wireless Networks through Distributed Interference Alignment | Recent results establish the optimality of interference alignment to approach the Shannon capacity of interference networks at high SNR. However, the extent to which interference can be aligned over a finite number of signalling dimensions remains unknown. Another important concern for interference alignment schemes is... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16012233 | 0803.3722 | 2008-03-26 | Optical and Infrared Observations of the X-ray source 1WGA J1713.4$-$3949 in the G347.3-0.5 SNR | X-ray observations unveiled the existence of enigmatic point-like sources at the centre of young supernova remnants (SNRs). These sources, dubbed Central Compact Objects (CCOs), are thought to be neutron stars formed by the supernova explosion. However, their multi-wavelength phenomenology is surprisingly different fro... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
584866 | 0803.3697 | 2008-03-26 | In-season prediction of batting averages: A field test of empirical Bayes and Bayes methodologies | Batting average is one of the principle performance measures for an individual baseball player. It is natural to statistically model this as a binomial-variable proportion, with a given (observed) number of qualifying attempts (called ``at-bats''), an observed number of successes (``hits'') distributed according to the... | [
"stat.AP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2487199 | 0803.3691 | 2008-03-26 | Transition from fractal to non-fractal scalings in growing scale-free networks | Real networks can be classified into two categories: fractal networks and non-fractal networks. Here we introduce a unifying model for the two types of networks. Our model network is governed by a parameter $q$. We obtain the topological properties of the network including the degree distribution, average path length, ... | [
"cond-mat.other"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "z zhang_150",
"name": "Zhongzhi Zhang",
"publication_history": null,
"h_index": null,
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"num_citations": null
},
{
"author_id": "s zhou_53",
"name": "Shuigeng Zhou",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
119112771 | 0803.3696 | 2008-03-26 | Realistic calculations of nuclear disappearance lifetimes induced by neutron-antineutron oscillations | Realistic calculations of nuclear disappearance lifetimes induced by neutron-antineutron oscillations are reported for oxygen and iron, using antineutron nuclear potentials derived from a recent comprehensive analysis of antiproton atomic X-ray and radiochemical data. A lower limit of 3.3 x 10E8 s on the neutron-antine... | [
"hep-ph",
"nucl-ex",
"nucl-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1299095 | 0803.3773 | 2008-03-26 | Capacity of Gaussian MIMO Bidirectional Broadcast Channels | We consider the broadcast phase of a three-node network, where a relay node establishes a bidirectional communication between two nodes using a spectrally efficient two-phase decode-and-forward protocol. In the first phase the two nodes transmit their messages to the relay node. Then the relay node decodes the messages... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r wyrembelski_0",
"name": "Rafael [\"F.\"] Wyrembelski",
"publication_history": null,
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{
"author_id": "t oechtering_1",
"name": "Tobias [\"J.\"] Oechtering",
"publication_history": null,
"h_index... | null |
16350311 | 0803.3876 | 2008-03-27 | Coordinate descent algorithms for lasso penalized regression | Imposition of a lasso penalty shrinks parameter estimates toward zero and performs continuous model selection. Lasso penalized regression is capable of handling linear regression problems where the number of predictors far exceeds the number of cases. This paper tests two exceptionally fast algorithms for estimating re... | [
"stat.AP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1925649 | 0803.3948 | 2008-03-27 | An approximation algorithm for counting contingency tables | We present a randomized approximation algorithm for counting contingency tables, mxn non-negative integer matrices with given row sums R=(r_1, ..., r_m) and column sums C=(c_1, ..., c_n). We define smooth margins (R,C) in terms of the typical table and prove that for such margins the algorithm has quasi-polynomial N^{O... | [
"math.CO",
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
28326060 | 0803.3971 | 2008-03-27 | Size dependence of the minimum excitation gap in the Quantum Adiabatic Algorithm | We study the typical (median) value of the minimum gap in the quantum version of the Exact Cover problem using Quantum Monte Carlo simulations, in order to understand the complexity of the quantum adiabatic algorithm (QAA) for much larger sizes than before. For a range of sizes, N <= 128, where the classical Davis-Putn... | [
"cond-mat.dis-nn",
"cond-mat.stat-mech",
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
11954048 | 0803.3946 | 2008-03-27 | On the `Semantics' of Differential Privacy: A Bayesian Formulation | Differential privacy is a definition of "privacy'" for algorithms that analyze and publish information about statistical databases. It is often claimed that differential privacy provides guarantees against adversaries with arbitrary side information. In this paper, we provide a precise formulation of these guarantees i... | [
"cs.CR",
"cs.DB"
] | null | [
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"target.key_reference"
] | [] | [
{
"author_id": "s kasiviswanathan_1",
"name": "Shiva [\"Prasad\"] Kasiviswanathan",
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},
{
"author_id": "a smith_13",
"name": "Adam [\"D.\"] Smith",
"publication_history": null,
"h_index... | null |
1110006 | 0803.4026 | 2008-03-27 | High-dimensional analysis of semidefinite relaxations for sparse principal components | Principal component analysis (PCA) is a classical method for dimensionality reduction based on extracting the dominant eigenvectors of the sample covariance matrix. However, PCA is well known to behave poorly in the ``large $p$, small $n$'' setting, in which the problem dimension $p$ is comparable to or larger than the... | [
"math.ST",
"cs.IT",
"math.IT",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
14941223 | 0803.3863 | 2008-03-27 | Simultaneous inference: When should hypothesis testing problems be combined? | Modern statisticians are often presented with hundreds or thousands of hypothesis testing problems to evaluate at the same time, generated from new scientific technologies such as microarrays, medical and satellite imaging devices, or flow cytometry counters. The relevant statistical literature tends to begin with the ... | [
"stat.AP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13690352 | 0803.3861 | 2008-03-27 | Well-Tempered Metadynamics: A Smoothly Converging and Tunable Free-Energy Method | We present a method for determining the free energy dependence on a selected number of collective variables using an adaptive bias. The formalism provides a unified description which has metadynamics and canonical sampling as limiting cases. Convergence and errors can be rigorously and easily controlled. The parameters... | [
"cond-mat.stat-mech",
"physics.chem-ph",
"physics.comp-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
779456 | 0803.4044 | 2008-03-28 | Ergodic Properties of a Class of Discrete Abelian Group Extensions of Rank-One Transformations | We define a class of discrete abelian group extensions of rank-one transformations and establish necessary and sufficient conditions for these extensions to be power weakly mixing. We show that all members of this class are multiply recurrent. We then study conditions sufficient for showing that cartesian products of t... | [
"math.DS"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "c dodd_0",
"name": "Christopher [\"J.\"] Dodd",
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},
{
"author_id": "p jeasakul_0",
"name": "Phakawa Jeasakul",
"publication_history": null,
"h_index": null,
"num_pap... | null |
10643782 | 0803.4008 | 2008-03-28 | Effects of new leptons in Electroweak Precision Data | We obtain limits on generic vector-like leptons at the TeV scale from electroweak precision tests. These limits are complementary to the ones obtained from lepton flavour violating processes. In general, the quality of the global electroweak fit is comparable to the one for the Standard Model. In the case of an extra n... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13435736 | 0803.4063 | 2008-03-28 | Calibrating Car-Following Models using Trajectory Data: Methodological Study | The car-following behavior of individual drivers in real city traffic is studied on the basis of (publicly available) trajectory datasets recorded by a vehicle equipped with an radar sensor. By means of a nonlinear optimization procedure based on a genetic algorithm, we calibrate the Intelligent Driver Model and the Ve... | [
"physics.soc-ph",
"physics.pop-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118635178 | 0803.4105 | 2008-03-28 | Chiral Brownian rotor and heat pump | This paper provides some comprehensive calculations supporting the results in Phys. Rev. Lett. 100, 130601 (2008) [arXiv:0711.1758]. | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m broek_1",
"name": "Martinus [\"H.\",\"L.\",\"M.\",\"van\",\"den\"] Broek",
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},
{
"author_id": "c broeck_1",
"name": "Chris [\"Van\",\"Den\"] Broeck",
"publication_history"... | null |
18328144 | 0803.4084 | 2008-03-28 | GMRT Radio Halo Survey in galaxy clusters at z = 0.2 -- 0.4. II.The eBCS clusters and analysis of the complete sample | We present the results of the GMRT cluster radio halo survey. The main purposes of our observational project are to measure which fraction of massive galaxy clusters in the redshift range z=0.2--0.4 hosts a radio halo, and to constrain the expectations of the particle re--acceleration model for the origin of the non--t... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
115156506 | 0803.4079 | 2008-03-28 | A Note on Ternary Sequences of Strings of 0 and 1 | B. D. Acharya has conjectured that if $\bigl(A_i: i=1, 2, ..., 2^{|X|}-1\bigr)$ is a permutation of all nonempty subsets of a set $X$ with at least two elements such that for each even positive integer $j<2^{|X|}-1$, $A_{j-1}\triangle A_j\triangle A_{j+1}=\emptyset$, then $|X|=2$. In this article, we show that if the c... | [
"math.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17184522 | 0803.4138 | 2008-03-28 | The contribution of the Unresolved Extragalactic Radio Sources to the Brightness Temperature of the sky | The contribution of the Unresolved Extragalactic Radio Sources to the diffuse brightness of the sky was evaluated using the source number - flux measurements available in literature. We first optimized the fitting function of the data based on number counts distribution. We then computed the brightness temperature at v... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5661488 | 0803.4101 | 2008-03-28 | Measuring and testing dependence by correlation of distances | Distance correlation is a new measure of dependence between random vectors. Distance covariance and distance correlation are analogous to product-moment covariance and correlation, but unlike the classical definition of correlation, distance correlation is zero only if the random vectors are independent. The empirical ... | [
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
17730325 | 0803.4097 | 2008-03-28 | Detecting gravitational wave emission from the known accreting neutron stars | Detection of gravitational waves from accreting neutron stars (NSs) in our galaxy, due to ellipticity or internal oscillation, would be a breakthrough in our understanding of compact objects and explain the absence of NSs rotating near the break-up limit. Direct detection, however, poses a formidable challenge. Using t... | [
"astro-ph",
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
28548861 | 0803.4083 | 2008-03-28 | Accurate sampling using Langevin dynamics | We show how to derive a simple integrator for the Langevin equation and illustrate how it is possible to check the accuracy of the obtained distribution on the fly, using the concept of effective energy introduced in a recent paper [J. Chem. Phys. 126, 014101 (2007)]. Our integrator leads to correct sampling also in th... | [
"physics.comp-ph",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14711685 | 0803.4211 | 2008-03-28 | Tidal Effects and the Environment Dependence of Halo Assembly | We explore a possible origin for the puzzling anti-correlation between the formation epoch of galactic dark-matter haloes and their environment density. This correlation has been revealed from cosmological N-body simulations and is in conflict with the Extended Press-Schechter model of halo clustering. Using similar si... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
23411901 | 0803.4060 | 2008-03-28 | Canonical sampling through velocity-rescaling | We present a new molecular dynamics algorithm for sampling the canonical distribution. In this approach the velocities of all the particles are rescaled by a properly chosen random factor. The algorithm is formally justified and it is shown that, in spite of its stochastic nature, a quantity can still be defined that r... | [
"cond-mat.stat-mech",
"physics.chem-ph",
"physics.comp-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16320892 | 0803.4257 | 2008-03-29 | SQCD: A Geometric Apercu | We take new algebraic and geometric perspectives on the old subject of SQCD. We count chiral gauge invariant operators using generating functions, or Hilbert series, derived from the plethystic programme and the Molien-Weyl formula. Using the character expansion technique, we also see how the global symmetries are enco... | [
"hep-th"
] | null | [
"target.author.publication_history"
] | [
{
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{
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{
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{
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{
"author_id": "a hanany_1",
"name": "Amihay Hanany",
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"nu... | null |
261727340 | 0803.4315 | 2008-03-30 | Dust in Brown Dwarfs and Extra-solar Planets I. Chemical composition and spectral appearance of quasi-static cloud layers | We aim at understanding the formation of cloud layers in quasi-static substellar atmospheres. The time-dependent description presented in (Helling & Woitke 2006) is a kinetic model describing nucleation, growth and evaporation. It is extended to treat gravitational settling and is applied to the static-stationary case ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16835697 | 0803.4202 | 2008-03-30 | Anomalies in Fermionic UV Completions of Little Higgs Models | We consider fermionic UV completions of little Higgs models and their associated T-parity violating anomalous vertices. In particular, we investigate strategies to avoid such parity-violating anomalies. We show that it is unlikely a QCD-like UV completion could be used to implement a model with anomaly-free global symm... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17815961 | 0803.4300 | 2008-03-30 | Globalization of the partial isometries of metric spaces and local approximation of the group of isometries of the Urysohn space | We prove the equivalence of the two important facts about finite metric spaces and universal Urysohn metric spaces $\Bbb U$, namely theorem A and theorem B below: Theorem A (Approximation): The group of isometry $ISO(\Bbb U)$ contains everywhere dense locally finite subgroup; Theorem G(Globalization): For each finite m... | [
"math.MG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119024747 | 0803.4319 | 2008-03-30 | The multi-angle instability in dense neutrino systems | We calculate rates of flavor exchange within clouds of neutrinos interacting with each other through the standard model coupling, assuming a conventional mass matrix. For cases in which there is an angular dependence in the relation among intensity, flavor and spectrum, we find instabilities in the evolution equations ... | [
"astro-ph",
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
35120636 | 0803.4490 | 2008-03-31 | Controlling the spontaneous emission of a superconducting transmon qubit | We present a detailed characterization of coherence in seven transmon qubits in a circuit QED architecture. We find that spontaneous emission rates are strongly influenced by far off-resonant modes of the cavity and can be understood within a semiclassical circuit model. A careful analysis of the spontaneous qubit deca... | [
"cond-mat.mes-hall",
"cond-mat.supr-con",
"quant-ph"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
265039734 | 0803.4290 | 2008-03-31 | A convergent hierarchy of semidefinite programs characterizing the set of quantum correlations | We are interested in the problem of characterizing the correlations that arise when performing local measurements on separate quantum systems. In a previous work [Phys. Rev. Lett. 98, 010401 (2007)], we introduced an infinite hierarchy of conditions necessarily satisfied by any set of quantum correlations. Each of thes... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16137430 | 0804.0041 | 2008-03-31 | On the reconstruction of block-sparse signals with an optimal number of measurements | Let A be an M by N matrix (M < N) which is an instance of a real random Gaussian ensemble. In compressed sensing we are interested in finding the sparsest solution to the system of equations A x = y for a given y. In general, whenever the sparsity of x is smaller than half the dimension of y then with overwhelming prob... | [
"cs.IT",
"cs.NA",
"math.IT"
] | null | [
"target.author.publication_history",
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{
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] | [
{
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{
"author_id": "f parvaresh_1",
"name": "Farzad Parvaresh",
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"num_papers": ... | null |
16857223 | 0804.0042 | 2008-03-31 | SN 2006tf: Precursor Eruptions and the Optically Thick Regime of Extremely Luminous Type IIn Supernovae | SN2006tf is the third most luminous SN discovered so far, after SN2005ap and SN2006gy. SN2006tf is valuable because it provides a link between two regimes: (1) luminous type IIn supernovae powered by emission directly from interaction with circumstellar material (CSM), and (2) the most extremely luminous SNe where the ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
27812207 | 0803.4396 | 2008-03-31 | Real Roots of Random Polynomials and Zero Crossing Properties of Diffusion Equation | We study various statistical properties of real roots of three different classes of random polynomials which recently attracted a vivid interest in the context of probability theory and quantum chaos. We first focus on gap probabilities on the real axis, i.e. the probability that these polynomials have no real root in ... | [
"cond-mat.stat-mech",
"cond-mat.dis-nn",
"math-ph",
"math.MP",
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119152471 | 0803.4295 | 2008-03-31 | Figure of Merit for Dark Energy Constraints from Current Observational Data | Choosing the appropriate figure of merit (FoM) for dark energy (DE) constraints is key in comparing different DE experiments. Here we show that for a set of DE parameters {f_i}, it is most intuitive to define FoM = 1/\sqrt{Cov(f1,f2,f3,...)}, where Cov(f1,f2,f3,...) is the covariance matrix of {f_i}. The {f_i} should b... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
9806189 | 0803.4516 | 2008-03-31 | A Dual Polynomial for OR | We reprove that the approximate degree of the OR function on n bits is Omega(sqrt(n)). We consider a linear program which is feasible if and only if there is an approximate polynomial for a given function, and apply the duality theory. The duality theory says that the primal program has no solution if and only if its d... | [
"cs.CC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118728722 | 0803.4405 | 2008-03-31 | LHC signals for neutrino mass model in bilinear R-parity violating mAMSB | We investigate a neutrino mass model in which the neutrino data is accounted for by bilinear R-parity violating supersymmetry with anomaly mediated supersymmetry breaking. We focus on the CERN Large Hadron Collider (LHC) phenomenology, studying the reach of generic supersymmetry search channels with leptons, missing en... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16511158 | 0803.4416 | 2008-03-31 | Consistent price systems and face-lifting pricing under transaction costs | In markets with transaction costs, consistent price systems play the same role as martingale measures in frictionless markets. We prove that if a continuous price process has conditional full support, then it admits consistent price systems for arbitrarily small transaction costs. This result applies to a large class o... | [
"q-fin.PR",
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
34386896 | 0804.0175 | 2008-04-01 | Equilibrium free energies from non-equilibrium metadynamics | In this paper we propose a new formalism to map history-dependent metadynamics in a Markovian process. We apply this formalism to a model Langevin dynamics and determine the equilibrium distribution of a collection of simulations. We demonstrate that the reconstructed free energy is an unbiased estimate of the underlyi... | [
"cond-mat.stat-mech",
"physics.comp-ph"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "g bussi_1",
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{
"author_id": "a laio_1",
"name": "Alessandro Laio",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
118408140 | 0804.0180 | 2008-04-01 | Transforming quantum operations: quantum supermaps | We introduce the concept of quantum supermap, describing the most general transformation that maps an input quantum operation into an output quantum operation. Since quantum operations include as special cases quantum states, effects, and measurements, quantum supermaps describe all possible transformations between ele... | [
"quant-ph"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "g chiribella_1",
"name": "Giulio Chiribella",
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},
{
"author_id": "g d’ariano_1",
"name": "Giacomo [\"Mauro\"] D’Ariano",
"publication_history": null,
"h_index": null,
... | null |
45347068 | 0804.0199 | 2008-04-01 | Observations of the Corona Borealis supercluster with the superextended Very Small Array: further constraints on the nature of the non-Gaussian CMB cold spot | We present interferometric imaging at 33 GHz, with the new superextended configuration of the Very Small Array (VSA), of a very deep decrement in the cosmic microwave background (CMB) temperature. This decrement is located in the direction of the Corona Borealis supercluster, at a position with no known galaxy clusters... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [
{
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{
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{
"corpus_id": "6990879",
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] | [
{
"author_id": "r génova-santos_1",
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{
"author_id": "j rubiño-martín_1",
"name": "José [\"Alberto\"] Rubiño-Martín",
"publication_history": null... | null |
18351854 | 0810.0920 | 2008-04-01 | From time series to complex networks: the visibility graph | In this work we present a simple and fast computational method, the visibility algorithm, that converts a time series into a graph. The constructed graph inherits several properties of the series in its structure. Thereby, periodic series convert into regular graphs, and random series do so into random graphs. Moreover... | [
"physics.data-an"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
15751504 | 0804.0136 | 2008-04-01 | Constraints on the non-linear coupling parameter fnl with the Archeops data | We present a Gaussianity analysis of the Archeops Cosmic Microwave Background (CMB) temperature anisotropy data maps at high resolution to constrain the non-linear coupling parameter fnl characterising well motivated non-Gaussian CMB models. We used the data collected by the most sensitive Archeops bolometer at 143 GHz... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
3040792 | 0804.0188 | 2008-04-01 | Support Vector Machine Classification with Indefinite Kernels | We propose a method for support vector machine classification using indefinite kernels. Instead of directly minimizing or stabilizing a nonconvex loss function, our algorithm simultaneously computes support vectors and a proxy kernel matrix used in forming the loss. This can be interpreted as a penalized kernel learnin... | [
"cs.LG",
"cs.AI"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r luss_1",
"name": "Ronny Luss",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "a d'aspremont_2",
"name": "Alexandre d'Aspremont",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
14675953 | 0804.0165 | 2008-04-01 | Rise of the centrist: from binary to continuous opinion dynamics | We propose a model that extends the binary ``united we stand, divided we fall'' opinion dynamics of Sznajd-Weron to handle continuous and multi-state discrete opinions. Disagreement dynamics are often ignored in continuous extensions of the binary rules, so we make the most symmetric continuum extension of the binary m... | [
"physics.soc-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
28533544 | 0804.0129 | 2008-04-01 | Optimal cloning of unitary transformations | After proving a general no-cloning theorem for black boxes, we derive the optimal universal cloning of unitary transformations, from one to two copies. The optimal cloner is realized by quantum channels with memory, and greately outperforms the optimal measure-and-reprepare cloning strategy. Applications are outlined, ... | [
"quant-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "g chiribella_1",
"name": "Giulio Chiribella",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "g d’ariano_1",
"name": "Giacomo [\"Mauro\"] D’Ariano",
"publication_history": null,
"h_index": null,
... | null |
16154811 | 0804.0065 | 2008-04-01 | Nonmodal energy growth and optimal perturbations in compressible plane Couette flow | Nonmodal transient growth studies and estimation of optimal perturbations have been made for the compressible plane Couette flow with three-dimensional disturbances. The maximum amplification of perturbation energy over time, $G_{\max}$, is found to increase with increasing Reynolds number ${\it Re}$, but decreases wit... | [
"physics.flu-dyn"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
263467933 | 0804.0233 | 2008-04-02 | What is the best way to measure baryonic acoustic oscillations? | Oscillations in the baryon-photon fluid prior to recombination imprint different signatures on the power spectrum and correlation function of matter fluctuations. The measurement of these features using galaxy surveys has been proposed as means to determine the equation of state of the dark energy. The accuracy require... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15898156 | 0804.0302 | 2008-04-02 | Ito's formula in UMD Banach spaces and regularity of solutions of the Zakai equation | Using the theory of stochastic integration for processes with values in a UMD Banach space developed recently by the authors, an Ito formula is proved which is applied to prove the existence of strong solutions for a class of stochastic evolution equations in UMD Banach spaces. The abstract results are applied to prove... | [
"math.PR",
"math.FA"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
9899928 | 0804.0337 | 2008-04-02 | On the Convexity of the MSE Region of Single-Antenna Users | We prove convexity of the sum-power constrained mean square error (MSE) region in case of two single-antenna users communicating with a multi-antenna base station. Due to the MSE duality this holds both for the vector broadcast channel and the dual multiple access channel. Increasing the number of users to more than tw... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r hunger_1",
"name": "Raphael Hunger",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "m joham_1",
"name": "Michael Joham",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
119219732 | 0804.0371 | 2008-04-02 | Efficient positronium laser excitation for antihydrogen production in a magnetic field | Antihydrogen production by charge exchange reaction between Positronium (Ps) atoms and antiprotons requires an efficient excitation of Ps atoms up to high-n levels (Rydberg levels). In this study it is assumed that a Ps cloud is produced within a relatively strong uniform magnetic field (1 Tesla) and with a relatively ... | [
"quant-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "f castelli_1",
"name": "Fabrizio Castelli",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "i boscolo_1",
"name": "Ilario Boscolo",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
118461776 | 0804.0382 | 2008-04-02 | Search for Correlations between HiRes Stereo Events and Active Galactic Nuclei | We have searched for correlations between the pointing directions of ultrahigh energy cosmic rays observed by the High Resolution Fly's Eye experiment and Active Galactic Nuclei (AGN) visible from its northern hemisphere location. No correlations, other than random correlations, have been found. We report our results u... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13426848 | 0804.0329 | 2008-04-02 | Brane Tilings for Orientifolds | We give an elementary introduction to the recent derivation of the effective low-energy gauge theories of D3-branes probing orientifolds of toric Calabi-Yau 3-fold singularities via brane tiling techniques. | [
"hep-th"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "d krefl_1",
"name": "Daniel Krefl",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
16008321 | 0804.0482 | 2008-04-02 | An introduction to L\'{e}vy processes with applications in finance | These lectures notes aim at introducing L\'{e}vy processes in an informal and intuitive way, accessible to non-specialists in the field. In the first part, we focus on the theory of L\'{e}vy processes. We analyze a `toy' example of a L\'{e}vy process, viz. a L\'{e}vy jump-diffusion, which yet offers significant insight... | [
"q-fin.PR",
"math.PR"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a papapantoleon_1",
"name": "Antonis Papapantoleon",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
10934839 | 0804.0402 | 2008-04-02 | Athena: A New Code for Astrophysical MHD | A new code for astrophysical magnetohydrodynamics (MHD) is described. The code has been designed to be easily extensible for use with static and adaptive mesh refinement. It combines higher-order Godunov methods with the constrained transport (CT) technique to enforce the divergence-free constraint on the magnetic fiel... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7898895 | 0804.0385 | 2008-04-02 | On the Sum-Capacity of Degraded Gaussian Multiaccess Relay Channels | The sum-capacity is studied for a K-user degraded Gaussian multiaccess relay channel (MARC) where the multiaccess signal received at the destination from the K sources and relay is a degraded version of the signal received at the relay from all sources, given the transmit signal at the relay. An outer bound on the capa... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "l sankar_1",
"name": "L. Sankar",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "n mandayam_1",
"name": "Narayan [\"B.\"] Mandayam",
"publication_history": null,
"h_index": null,
"num_papers":... | null |
3917089 | 0804.0320 | 2008-04-02 | Experimental continuation of periodic orbits through a fold | We present a continuation method that enables one to track or continue branches of periodic orbits directly in an experiment when a parameter is changed. A control-based setup in combination with Newton iterations ensures that the periodic orbit can be continued even when it is unstable. This is demonstrated with the c... | [
"nlin.CD"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j sieber_2",
"name": "Jan Sieber",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "a gonzalez-buelga_0",
"name": "Alicia Gonzalez-Buelga",
"publication_history": null,
"h_index": null,
"num_pap... | null |
8807018 | 0804.0396 | 2008-04-02 | On the approximability of minmax (regret) network optimization problems | In this paper the minmax (regret) versions of some basic polynomially solvable deterministic network problems are discussed. It is shown that if the number of scenarios is unbounded, then the problems under consideration are not approximable within $\log^{1-\epsilon} K$ for any $\epsilon>0$ unless NP $\subseteq$ DTIME$... | [
"cs.CC",
"cs.DM"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118416390 | 0804.0327 | 2008-04-02 | The large deviation approach to statistical mechanics | The theory of large deviations is concerned with the exponential decay of probabilities of large fluctuations in random systems. These probabilities are important in many fields of study, including statistics, finance, and engineering, as they often yield valuable information about the large fluctuations of a random sy... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
54833678 | 0804.0272 | 2008-04-02 | Quantum computing using shortcuts through higher dimensions | Quantum computation offers the potential to solve fundamental yet otherwise intractable problems across a range of active fields of research. Recently, universal quantum-logic gate sets - the building blocks for a quantum computer - have been demonstrated in several physical architectures. A serious obstacle to a full-... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
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