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SUMS AND DIFFERENCES OF FOUR kTH POWERS
, 2009
"... We prove an upper bound for the number of representations of a positive integer N as the sum of four kth powers of integers of size at most B, using a new version of the Determinant method developed by HeathBrown, along with recent results by Salberger on the density of integral points on affine ..."
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We prove an upper bound for the number of representations of a positive integer N as the sum of four kth powers of integers of size at most B, using a new version of the Determinant method developed by HeathBrown, along with recent results by Salberger on the density of integral points
A review of image denoising algorithms, with a new one
 SIMUL
, 2005
"... The search for efficient image denoising methods is still a valid challenge at the crossing of functional analysis and statistics. In spite of the sophistication of the recently proposed methods, most algorithms have not yet attained a desirable level of applicability. All show an outstanding perf ..."
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Cited by 508 (6 self)
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and, second, to propose a nonlocal means (NLmeans) algorithm addressing the preservation of structure in a digital image. The mathematical analysis is based on the analysis of the “method noise, ” defined as the difference between a digital image and its denoised version. The NLmeans algorithm
Pin: building customized program analysis tools with dynamic instrumentation
 IN PLDI ’05: PROCEEDINGS OF THE 2005 ACM SIGPLAN CONFERENCE ON PROGRAMMING LANGUAGE DESIGN AND IMPLEMENTATION
, 2005
"... Robust and powerful software instrumentation tools are essential for program analysis tasks such as profiling, performance evaluation, and bug detection. To meet this need, we have developed a new instrumentation system called Pin. Our goals are to provide easytouse, portable, transparent, and eff ..."
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Cited by 991 (35 self)
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Robust and powerful software instrumentation tools are essential for program analysis tasks such as profiling, performance evaluation, and bug detection. To meet this need, we have developed a new instrumentation system called Pin. Our goals are to provide easytouse, portable, transparent
Testing for Common Trends
 Journal of the American Statistical Association
, 1988
"... Cointegrated multiple time series share at least one common trend. Two tests are developed for the number of common stochastic trends (i.e., for the order of cointegration) in a multiple time series with and without drift. Both tests involve the roots of the ordinary least squares coefficient matrix ..."
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Cited by 464 (7 self)
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matrix obtained by regressing the series onto its first lag. Critical values for the tests are tabulated, and their power is examined in a Monte Carlo study. Economic time series are often modeled as having a unit root in their autoregressive representation, or (equivalently) as containing a stochastic
The Determinants of Credit Spread Changes.
 Journal of Finance
, 2001
"... ABSTRACT Using dealer's quotes and transactions prices on straight industrial bonds, we investigate the determinants of credit spread changes. Variables that should in theory determine credit spread changes have rather limited explanatory power. Further, the residuals from this regression are ..."
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Cited by 422 (2 self)
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ABSTRACT Using dealer's quotes and transactions prices on straight industrial bonds, we investigate the determinants of credit spread changes. Variables that should in theory determine credit spread changes have rather limited explanatory power. Further, the residuals from this regression
Sums and Differences of Three kth Powers
"... If k ≥ 2 is a positive integer the number of representations of a positive integer N as either x k 1 + x k 2 = N or x k 1 − x k 2 = N, with integers x1 and x2, is finite. Moreover it is easily shown to be Oε(N ε), for any ε> 0. It is known that if k = 2 or 3 then the number of representations is ..."
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Cited by 7 (1 self)
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If k ≥ 2 is a positive integer the number of representations of a positive integer N as either x k 1 + x k 2 = N or x k 1 − x k 2 = N, with integers x1 and x2, is finite. Moreover it is easily shown to be Oε(N ε), for any ε> 0. It is known that if k = 2 or 3 then the number of representations
Developments in the Measurement of Subjective WellBeing
 Psychological Science.
, 1993
"... F or good reasons, economists have had a longstanding preference for studying peoples' revealed preferences; that is, looking at individuals' actual choices and decisions rather than their stated intentions or subjective reports of likes and dislikes. Yet people often make choices that b ..."
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Cited by 284 (7 self)
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100 papers were written analyzing data on selfreported life satisfaction or happiness, according to a tabulation of EconLit, up from just four in 19911995. Data on subjective wellbeing have been used by economists to examine both macroand microoriented questions. In a classic paper, Journal
The GOMS Family of User Interface Analysis Techniques: Comparison and Contrast
 ACM Transactions on ComputerHuman Interaction (TOCHI
, 1996
"... Since the publication of The Psychology of HumanComputer Interaction, the GOMS model has been one of the most widely known theoretical concepts in HCI. This concept has produced several GOMS analysis techniques that differ in appearance and form, underlying architectural assumptions, and predictive ..."
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Cited by 268 (12 self)
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, and predictive power. This article compares and contrasts four popular variants of the GOMS family (the KeystrokeLevel Model, the original GOMS formulation, NGOMSL, and CPMGOMS) by applying them to a single task example.
Bayesian inference on phylogeny and its impact on evolutionary biology.
 Science
, 2001
"... 1 As a discipline, phylogenetics is becoming transformed by a flood of molecular data. These data allow broad questions to be asked about the history of life, but also present difficult statistical and computational problems. Bayesian inference of phylogeny brings a new perspective to a number of o ..."
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Cited by 235 (10 self)
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?, to the practical, How did a virus spread through a population? Today, in fact, any study of DNA sequences sampled from different species or from different individuals in a population is likely to start with a phylogenetic analysis. The widespread use of phylogenies today is largely driven by the fundamental
Results 1  10
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