Data mining methodology has a tremendous contribution for extracting the hidden knowledge and patterns from the existing databases. Traditionally, researchers use basket data to mine association rules of which the basic task is to find the frequent items. For relational databases whose data format is relational data other than basket data, RDB-MINER algorithm was proposed. In this paper, we int...

Data integration is the process that gives users access to multiple data sources though queries against a global schema. Semantic heterogeneity has been identified as the most important and toughest problem when integrating various data sources. Several approaches were proposed to deal with this problem. These approaches can be classified using three criteria: (1) data representation which mean...

We study the deflection by gravity of a circular elastic disk deposited on rigid support. The axisymmetric induces compressive orthoradial stresses which leads to wrinkling instability above critical threshold dimensionless force. this combination experiments, numerical simulations and analytical tools, with particular focus role geometry. show that aspect ratio is crucial parameter controls bo...

Humans are sensitive to the parameters of translational motion, namely, direction and speed. At the same time, people have special mechanisms to deal with more complex motions, such as rotations and expansions. One wonders whether people may also be sensitive to the parameters of these complex motions. Here, we report on a series of experiments that explore whether human subjects can use angula...

We present a semi-analytical approach for modeling circumstellar emission from rotating hot stars with a strong dipole magnetic field tilted at an arbitrary angle to the rotation axis. By assuming the rigid-field limit in which material driven (e.g., in a wind outflow) from the star is forced to remain in strict rigid-body co-rotation, we are able to solve for the effective centrifugal-plus-gra...

Building upon our previous MHD simulation study of magnetic channeling in radiatively driven stellar winds, we examine here the additional dynamical effects of stellar rotation in the (still) 2-D axisymmetric case of an aligned dipole surface field. In addition to the magnetic confinement parameter η∗ introduced in Paper I, we characterize the stellar rotation in terms of a parameter W ≡ Vrot/V...

We provide a computer-assisted proof of one the central open questions in one-dimensional renormalization theory -- universality golden-mean Siegel disks. further show that for every function stable manifold fixed point boundary disk is quasicircle which coincides with closure critical orbit, and dynamics on rigid. Furthermore, we extend from analytic maps to two-dimensional dissipative H\'en...

The problem considered in this paper is one of damped vibrations of the beam in transportation. The dynamical analysis of systems in motion is a very well-known issue, but many detailed cases have not been published yet. The considered case is applied with the double-sided fixed beams placed on a rotational disk. The disk treated as a rigid one is rotated with a constant angular velocity in the...

Marangoni propulsion is a form of locomotion wherein an asymmetric release of surfactant by a body located at the surface of a liquid leads to its directed motion. We present in this paper a mathematical model for Marangoni propulsion in the viscous regime. We consider the case of a thin rigid circular disk placed at the surface of a viscous fluid and whose perimeter has a prescribed concentrat...