hershfield method is commonly used for computing probable maximum precipitation (pmp) in most parts of the world for which the frequency factor (km) is considered to be 15 for computing 24-h pmp (pmp24). this value may not be suitable for different stations under different climatic conditions. in 1986 the world meteorological organization standardized the hershfield method and introduced the re...

A methodology for analyzing the influence of gear backlash in axis drive systems a Cartesian CNC machine on positional accuracy is developed. The approach based solving dynamical equations context an angular dead-zone model and osculating circle approximation smooth paths neighborhood each path turning point, which admit essentially exact solution P controller. This basis schemes to minimize de...

Reducing servo response error and further making reduction on contour is crucial for high-precision computer numerical control (CNC) machine tools. For a permanent magnet synchronous motor (PMSM) system, there always lag in feedrate tracking, which would introduce into the machining trajectory. Therefore, it necessary to improve performance of planning interpolation trajectory path. In this pap...

Kualitas permukaan suatu produk logam pada pekerjaan pemesinan dipengaruhi oleh pemilihan proses, alat potong, dan material yang dikerjakan. Beragam klasifikasi jenis baja dengan berbagai paduan untuk memperbaiki sifat mampu mesin baja. Proses gerinda silinder digunakan mencapai kualitas akurasi ukuran pekerjaan. Perlu dilakukan penelitian mempelajari adanya korelasi karakteristik terhadap dimi...

We propose a framework for learning hiddenvariable models by optimizing entropies, in which entropy minimization, posterior maximization, and free energy minimization are all equivalent. Solutions for the maximum a posteriori (MAP) estimator yield powerful learning algorithms that combine all the charms of expectation-maximization and deterministic annealing. Contained as special cases are the ...