In almost all the literatures, the qualitative assessment of transient angle stability extracts the angle information of generators based on the swing curve. As the angle (or angle difference) of concern and the threshold value rely strongly on the engineering experience, the validity and robust of these criterions are weak. Based on the stability mechanism from the extended equal area criterio...

The algorithm of reactive power dispatching "per generator" realization is presented in the paper. Dispatching and grid" are two modes used by coordinated voltage regulator (GRRS). Reactive ensures equal heating generators, while maximal reserve when generated either increases, or decreases. more complex for because criterion may have wider generator's operation area than working capability cur...

INTRODUCTION FRAX®, an assessment algorithm for estimating fracture probability, has been widely used for the evaluation of osteoporosis since 2008. Its clinical use requires that osteoporotic fracture probability is established at which treatment can be recommended. OBJECTIVES The aim of the present study was to explore possible treatment thresholds for Poland. PATIENTS AND METHODS The FRA...

In this study, we present a one dimensional descriptor for the two dimensional object silhouettes which in theory remains absolutely invariant under affine transforms. The proposed descriptor operates on the affine enclosed area. We design a normalizing contour method. After this normalization, the number of points on a contour between two appointed positions doesn’t change with affine transfor...

We present a fast vectorized implementation of a transform that maps points in the unit square to the surface of the sphere, while preserving fractional area. The mapping uses the octahedral map combined with an equal-area parameterization and has many desirable features such as low distortion, straightforward interpolation, and fast inverse and forward transforms. Our SIMD implementation compl...