A method based on regression analysis is presented that can be used for automatic minimization of EOG and ECG artifacts in the sleep EEG. INTRODUCTION It is known that the non-cortical activity gives a contribution to the EEG recordings. Electrooculogram (EOG), the electrocardiagram (ECG) and muscle activity (EMG) are the most important non-cortical sources. For sleep analysis it is important t...

Detecting the mineralization component is one of the main subjects in geochemical exploration. Various techniques have been introduced to explore favorite zones and separate the anomaly from background, such as bivariate or multivariate statistical analysis. The main objectives is to identify the spatial variability and main sources of some special elements in Qare Char, in northwest of Iran, b...

Mechanical stress has a strong effect on the magnitude of the Barkhausen-noise in structural steels. Because the measurements are performed at the surface of the material, for a sample sheet, the full effect can be described by a biaxial stress field. The measured Barkhausen-noise is dependent on the orientation of the exciting magnetic field relative to the axis of the stress tensor. The sampl...

Transition is the basic phenomena of complex flow regime changes in fluid mechanics. So far, axiomatic expression and rigorous mathematical description transition separation are important scientific problems, which also great significance to development Applied Science. This article obtaining conditions general for through excited state theory flowfield, derivation based on N-S equations, combi...

Backward error initialization and parasitic mode control are well-suited for use in algorithms that arise from a discrete variational principle on phasespace dynamics. Dynamical systems described by degenerate Lagrangians, such as those occurring in phase-space action principles, lead to variational multistep algorithms for the integration of first-order differential equations. As multistep alg...

We present a method to numerically calculate the action variables of a completely integrable Hamiltonian system with N degrees of freedom. It is a constructification of the Liouville-Arnol’d theorem for the existence of tori in phase space. By introducing a metric on phase space the problem of finding N independent irreducible paths on a given torus is turned into the problem of finding the lat...

The quality of surface mount technology (SMT) product solder joint was key factor for SMT products. In this paper, for chip components, a fuzzy fault diagnosis principle of SMT products was analyzed. And the total framework of fault diagnosis system was built based on solder joint shape theory. Geometrical shape parameters which reflected chip components solder joint quality were analyzed and d...