5,172 research outputs found
A Class of Periodic Continued Radicals
We compute the limits of a class of periodic continued radicals and we
establish a connection between them and the fixed points of the Chebycheff
polynomials
Sequential Logistic Principal Component Analysis (SLPCA): Dimensional Reduction in Streaming Multivariate Binary-State System
Sequential or online dimensional reduction is of interests due to the
explosion of streaming data based applications and the requirement of adaptive
statistical modeling, in many emerging fields, such as the modeling of energy
end-use profile. Principal Component Analysis (PCA), is the classical way of
dimensional reduction. However, traditional Singular Value Decomposition (SVD)
based PCA fails to model data which largely deviates from Gaussian
distribution. The Bregman Divergence was recently introduced to achieve a
generalized PCA framework. If the random variable under dimensional reduction
follows Bernoulli distribution, which occurs in many emerging fields, the
generalized PCA is called Logistic PCA (LPCA). In this paper, we extend the
batch LPCA to a sequential version (i.e. SLPCA), based on the sequential convex
optimization theory. The convergence property of this algorithm is discussed
compared to the batch version of LPCA (i.e. BLPCA), as well as its performance
in reducing the dimension for multivariate binary-state systems. Its
application in building energy end-use profile modeling is also investigated.Comment: 6 pages, 4 figures, conference submissio
The Ascending Double-Cone: A Closer Look at a Familiar Demonstration
The double-cone ascending an inclined V-rail is a common exhibit used for
demonstrating concepts related to center-of-mass in introductory physics
courses. While the conceptual explanation is well-known--the widening of the
ramp allows the center of mass of the cone to drop, overbalancing the increase
in altitude due to the inclination of the ramp--there remains rich physical
content waiting to be extracted through deeper exploration. Such an
investigations seems to be absent from the literature. This article seeks to
remedy the omission.Comment: LaTeX, 16 pages, 18 eps figure
Studying Trilinear Gauge Couplings at Linear Collider Energies
We study the sensitivity of the processes `e+ e- -> lepton (l) neutrino (v)
quark (u) antiquark (d)', where the lepton is an electron or a muon, on the
non-standard trilinear gauge couplings (TGC), using the optimal observables
method at Linear Collider energies. Our study is based on the four-fermion
generator ERATO. Taking into account all possible correlations between the
different trilinear gauge coupling parameters, we show that they can be
measured with an accuracy of to for typical Linear Collider
energies and luminosities.Comment: 17 pages, LaTeX, version to appear in Zeitschrift fur Physi
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