搜索结果: 16-30 共查到“理学 K-P-Means”相关记录135条 . 查询时间(0.298 秒)
Methodological aspects of a pattern-scaling approach to produce global fields of monthly means of daily maximum and minimum temperature
produce global fi elds daily maximum
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2014/12/18
A Climate Pattern-Scaling Model (CPSM) that
simulates global patterns of climate change, for a prescribed
emissions scenario, is described. A CPSM works by quantitatively establishing the statistica...
Krakatau caldera deposits: revisited and verification by geophysical means
Krakatau caldera Parasitic cones Caldera deposit Drillings at calderas S-wave attenuation Vp/Vs ratio
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2015/8/18
One of the differences between volcanic craters and calderas is that the latter bottoms are flatways filled with caldera deposit with lower density in comparison to country rocks. The 1883 Krakatau er...
Inversion of circular means and the wave equation on general planar domains
Inversion of circular equation general planar domains Analysis of PDEs
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2012/6/25
We study the problem of recovering the initial data of the two dimensional wave equation from values of its solution on an arbitrarily shaped bounded domain $\Omega \subset \R^2$. As a main result we ...
Approximation of functions from Lp(w)b by matrix means of their Fourier series
Rate of approximation summability of Fourier series Lipschitz classes
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2012/4/16
We formulate some special conditions for the integrable functions and moduli of continuity. We give the results on rate of approximation of such functions by matrix means of their Fourier series, wher...
Inversion Formulas for the Spherical Means in Constant Curvature Spaces
The spherical mean Radon transform thermoacoustic tomography the method of analytic continuation
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2011/9/23
Abstract: The work develops further the theory of the following inversion problem, which plays the central role in the rapidly developing area of thermoacoustic tomography and has intimate connections...
The Study of Invasion Examination Algorithm Based on Improvement Fuzzy C Means
Clustering Data Mining Fuzzy C-Means Clustering Intrusion Detection Mountain Clustering Algorithm
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2011/12/16
This paper put forward intrusion detection algorithm based on improved fuzzy C means (FCM) algorithm and execute the anomaly detection on KDDCUP data set, build intrusion detection system based improv...
Sets of Injectivity for Weighted Twisted Spherical Means and Support Theorems
Heisenberg group twisted spherical means twisted con-volution
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2011/2/25
We prove that spheres are sets of injectivity for certain weighted twisted spherical means on Cn. We also prove an analog of Helgason’s support theorem for weighted Euclidean and twisted spheri-cal me...
Seasonal variability of aerosol optical properties observed by means of a Raman lidar at an EARLINET site over Northeastern Spain
aerosol optical properties a Raman lidar an EARLINET site Northeastern Spain
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2011/1/19
The annual and seasonal variability of aerosol optical properties observed by means of a Raman lidar over Northeastern Spain has been assessed. The lidar representativeness has first been checked agai...
On the integrability of polynomial fields in the plane by means of Picard-Vessiot theory
Differential Galois Theory Darboux theory of Integrability Poincar´ e problem,
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2011/2/24
We study the integrability of polynomial vector fields using Galois theory of linear differential equations when the associated foliations is reduced to a Riccati type folia-tion.
Confidence interval for the difference of two normal population means with a known ratio of variances
Coverage probability Expected length
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2010/9/20
Motivated by the recent work of Schechtman and Sherman [The twosample t-test with a known ratio of variances. Statistical Methodology 4, 508-514, (2007).], we investigate, in this paper, a new exact c...
A note on the Euclidean norms of matrices with arithmetic-geometric-harmonic means
Euclidean norm arithmetic-geometric-harmonic mean
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2010/9/25
A note on the Euclidean norms of matrices with arithmetic-geometric-harmonic means.
Recurrence-based time series analysis by means of complex network methods
Chaotic Dynamics (nlin.CD) Social and Information Networks (cs.SI) Data Analysis Statistics and Probability (physics.data-an) Physics and Society (physics.soc-ph)
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2010/11/10
Complex networks are an important paradigm of modern complex systems sciences which allows quantitatively assessing the structural properties of systems composed of different interacting entities. Dur...
Solving a Generalized Heron Problem by means of Convex Analysis
Generalized Heron Problem Convex Analysis
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2010/11/19
The classical Heron problem states: \emph{on a given straight line in the plane, find a point $C$ such that the sum of the distances from $C$ to the given points $A$ and $B$ is minimal}. This problem ...
Galactic astroarchaeology: reconstructing the bulge history by means of the newest data
Galaxy Astrophysics (astro-ph.GA) Cosmology and Extragalactic Astrophysics (astro-ph.CO) Solar and Stellar Astrophysics (astro-ph.SR)
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2010/12/27
The chemical abundances measured in stars of the Galactic bulge offer an unique opportunity to test galaxy formation models as well as impose strong constraints on the history of star formation and st...
Reconstruction of a function from its spherical (circular) means with the centers lying on the surface of certain polygons and polyhedra
Reconstruction of a function spherical (circular) means certain polygons and polyhedra
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2010/11/26
We present explicit filtration/backprojection-type formulae for the inversion of the spherical (circular) mean transform with the centers lying on the boundary of some polyhedra (or polygons, in 2D). ...