Moisture flux and rainfall anomalies over southern Africa that have occurred during strong warm SST events off the coast of Angola since 1950 are considered. These events typically occur during February-April (FMA), the main rainy season for Angola/northern Namibia. Eleven of these events have occurred in this 60 year period and each experiences increased rainfall somewhere in coastal Angola, a...

An interior permanent magnet synchronous motor (IPMSM) drive system with machine learning-based maximum torque per ampere (MTPA) as well flux-weakening (FW) control was developed and is presented in this study. Since the performance of IPMSM varies significantly due to temperature variation magnetic saturation, a MTPA using Petri probabilistic fuzzy neural network an asymmetric membership funct...

We examine colors from 3.6μm to 24μm as a function of metallicity (O/H) for a sample of 34 galaxies. The galaxies range over 2 orders of magnitude in metallicity. They display an abrupt shift in the 8μm to 24μm color between metallicities 1/3 to 1/5 of the solar value. The mean 8μm to 24μm flux density ratio below and above 12 + log(O/H) = 8.2 is 0.08 ± 0.04 and 0.70 ± 0.53, respectively. We us...

Dual permanent magnet (PM) machines have attracted numerous interests due to the high torque density and compact volume . This article investigates a synergistic PM with synergies of flux switching reversal effects. The flux-reversal flux-switching (FSPM) paths circulate from two sides split te...

Axial flux ironless permanent magnetic synchronous motor (AFIPMSM) is a new permanent magnetic motor. It has many advantages, such as little volume, low mass, low lost, high power density, no cogging torque, and the sinusoidal back EMF. It gradually becomes the good choice in drive system. However, because of the coreless structure and the long air gap, the winding inductance is small, which ca...

This paper presents a strategy for permanent magnet synchronous motor sensorless vector control based on rotor flux estimation considering saliency. The integration problem in the stator was solved by replacing integrator with low-pass filter. filter parametric adaptation algorithm phase delay compensation, Bode diagrams designed angular position accuracy improving. proposed adaption allowed to...

Atserias, Kolaitis, and Vardi [1] showed that the proof system of Ordered Binary Decision Diagrams with conjunction and weakening, OBDD(∧,weakening), simulates CP∗ (Cutting Planes with unary coefficients). We show that OBDD(∧,weakening) can give exponentially shorter proofs than dag-like cutting planes. This is proved by showing that the Clique-Coloring tautologies have polynomial size proofs i...

The robust weakening of the tropical atmospheric circulation in projections of anthropogenic warming is associated with substantial changes in regional and global climate. The present study focuses on understanding the response of the annual-mean Hadley circulation from a perspective of interactions between climate feedbacks and tropical circulation. Simulations from an ensemble of coupled ocea...

By means of fluctuational electrodynamics, we calculate radiative heat flux between two planar materials respectively made of SiC and SiO2. More specifically, we focus on a first (direct) situation where one of the two materials (for example SiC) is at ambient temperature whereas the second material is at a higher one, then we study a second (reverse) situation where the material temperatures a...