Results 1  10
of
45
Numerical Simulation of 3D Acoustic Logging
"... Abstract. Finitedifference (FD) method for 3D simulation of sonic waves propagation in a borehole and surrounding 3D heterogeneous elastic medium is presented. It is based on explicit secondorder staggered grid FD scheme that solves the firstorder elastic wave equations in cylindrical coordinates ..."
Abstract
 Add to MetaCart
Abstract. Finitedifference (FD) method for 3D simulation of sonic waves propagation in a borehole and surrounding 3D heterogeneous elastic medium is presented. It is based on explicit secondorder staggered grid FD scheme that solves the firstorder elastic wave equations in cylindrical
Loggamma directed polymer with fixed endpoints via the replica bethe
 Columbia University, Department of Mathematics
"... Abstract. We study the model of a discrete directed polymer (DP) on the square lattice with homogeneous inverse gamma distribution of site random Boltzmann weights, introduced by Seppalainen [1]. The integer moments of the partition sum, Zn, are studied using a transfer matrix formulation, which app ..."
Abstract

Cited by 2 (0 self)
 Add to MetaCart
determinant (FD). This suggests an analytic continuation via a MellinBarnes transform and we thereby propose a FD ansatz representation for the probability distribution function (PDF) of Z and its Laplace transform. In the limit of very long DP, this ansatz yields that the distribution of the free energy
A simple O(n log n) algorithm for finding the maximum distance between two finite planar sets
, 1982
"... A simple O(n log n) algorithm is presented for computing the maximum Euclidean distance between two finite planar sets of n points. When the n points form the vertices of simple polygons, then the complexity reduces to O(n). 1 Introduction Let S 1 = p 1 ; p 2 ; : : : ; p n and S 2 = q 1 ; q 2 ; : : ..."
Abstract

Cited by 5 (3 self)
 Add to MetaCart
), is defined as d max (S 1 ; S 2 ) = max i;j fd(p i ; q j )g; i; j = 1; 2; : : : ; n; where d(p i ; q j ) is the Euclidean distance between p i and q j . The computation of distances between sets arises frequently in pattern recognition problems [3], where clustering is a prime example. In agglomerative
1 Finitedifference simulation of borehole EM logging measurements in 3D anisotropic subsurface media using coupled potentials
"... We describe a novel staggeredstandard grid finitedifference (FD) modeling algorithm for computing frequencydomain electromagnetic (EM) fields using a coupled vectorscalar potential formulation in arbitrary 3D inhomogeneous anisotropic media. The algorithm is based on the secondorder partial dif ..."
Abstract
 Add to MetaCart
We describe a novel staggeredstandard grid finitedifference (FD) modeling algorithm for computing frequencydomain electromagnetic (EM) fields using a coupled vectorscalar potential formulation in arbitrary 3D inhomogeneous anisotropic media. The algorithm is based on the secondorder partial
Pseudorandom bits for polynomials
 In 48th Annual Symposium on Foundations of Computer Science. IEEE
, 2007
"... We present a new approach to constructing pseudorandom generators that fool lowdegree polynomials over finite fields, based on the Gowers norm. Using this approach, we obtain the following main constructions of explicitly computable generators G: F s → F n that fool polynomials over a prime field F: ..."
Abstract

Cited by 49 (9 self)
 Add to MetaCart
: 1. a generator that fools degree2 (i.e., quadratic) polynomials to within error 1/n, with seed length s = O(log n), 2. a generator that fools degree3 (i.e., cubic) polynomials to within error ɛ, with seed length s = O(log F  n) + f(ɛ, F) where f depends only on ɛ and F (not on n), 3. assuming
Quantitative illumination of convex bodies and vertex degrees of geometric Steiner minimal trees
"... ABSTRACT. In this note we prove two results on the quantitative illumination parameter f(d) of the unit ball of a ddimensional normed space introduced by K. Bezdek (1992). The first is that f(d) = O(2 d d 2 log d). The second involves Steiner minimal trees. Let v(d) be the maximum degree of a vert ..."
Abstract

Cited by 8 (0 self)
 Add to MetaCart
ABSTRACT. In this note we prove two results on the quantitative illumination parameter f(d) of the unit ball of a ddimensional normed space introduced by K. Bezdek (1992). The first is that f(d) = O(2 d d 2 log d). The second involves Steiner minimal trees. Let v(d) be the maximum degree of a
Interaction Predictions with PBPK models and Optimal Multiresponse Sampling Time Designs: Application to Midazolam and a phase I compound. DrugDrug
"... to evaluate the potential CYP3A4 inhibitory effect of a drug in development, SX, on a reference substrate, midazolam (MDZ). Secondary aim was to evaluate the interaction of SX on MDZ in the in vivo study. Methods. To compare designs, real data were analysed by population PK modelling using aiming FD ..."
Abstract
 Add to MetaCart
was applied to compare the individual PK parameters (i.e. log(AUC) and log(Cmax)) obtained either by a noncompartmental approach (NCA) using FD or from empirical Bayes estimates (EBE) obtained after fitting the model separately on each treatment group using conclude
Optimaldepth threshold circuits for multiplication and related problems
 Proc. 33th Asilomar Conf. Signals, Systems, and Computers
, 1999
"... Multiplication is one of the most fundamental operations in arithmetic and algebraic computations. In this paper, we present depthoptimal circuits for performing multiplication, multioperand addition, and symmetric function evaluation with small size and restricted fanin. In particular, we show th ..."
Abstract

Cited by 1 (1 self)
 Add to MetaCart
that the product of two nbit numbers can be computed using a unitweight threshold circuit of fanink, depth 3 logk n + log2 d log2(1+&)1 lo&) + O(l), and edge complexity O(n2f’/d log(d + l)), for any integer d> 0. All the circuits proposed in this paper have constant depth when logkn is a constant
Fractal Characteristics of MayGrünwaldGiemsa Stained Chromatin Are Independent Prognostic Factors for Survival in Multiple Myeloma
"... Background: The use of computerized image analysis for the study of nuclear texture features has provided important prognostic information for several neoplasias. Recently fractal characteristics of the chromatin structure in routinely stained smears have shown to be independent prognostic factors i ..."
Abstract

Cited by 2 (1 self)
 Add to MetaCart
into pseudo3D images. FD was determined by the MinkowskiBouligand method extended to three dimensions. Goodnessoffit of FD was estimated by the R 2 values in the loglog plots. The influence of diagnostic features on overall survival was analyzed in Cox regressions. Patients that underwent autologous bone
1 Adhoc Task 1.1 Background
"... The focus of our work in TREC 8 has again been on the retrieval of documents using arbitrary passages. This year the system has been re ned to include variable sized passages and pivot normalisation. Passage based automatic relevance feedback has also been explored, albeit without the use of negativ ..."
Results 1  10
of
45