With the improvement of industrialization, importance equipment failure prediction is increasing day by day. Accurate gas-insulated switchgear (GIS) in advance can reduce economic loss caused power system to operate normally. Therefore, a GIS fault approach based on Improved Particle Swarm Optimization Algorithm (IPSO)-least squares support vector machine (LSSVM) proposed this paper. Firstly, f...

An efficient and one pot synthetic method of ipso-nitration of arylboronic acids has been developed. The high efficiency, general applicability, and broader substrate scope including heterocycles and functional groups make this method advantageous. Due to its simplicity, we expect to find application of this method in synthesis.

in recent years, reducing emissions has become an important issue. besides reducing the economic costs, reducing the fuel consumption decreases emissions, pollutant impact and increases society health as well. green vehicle routing problem are a major key to reduce hazardous effects of transportation such as air pollution, greenhouse gas (ghg) emissions, noise and the like. generally, the amoun...

A variety of 5,4'-disubstituted flavones, which are anticipated to be androgen receptor antagonists to treat diseases mediated by the androgen receptor, were synthesized. It was found that an intramolecular ipso-substitution reaction via cesium enolate using 2-fluoro-6-hydroxyacetophenone and various benzoyl chlorides was effective in the preparation of 5-hydroxy-4'-alkylflavones.

Mannich bases were prepared from substituted phenols with aliphatic amines and formal­ dehyde. Amine exchange with N-methyl-2-naphthylamine followed by a Hofmann Martius rearrangement gave rise to o,o'-amino-hydroxy-diphenylmethane derivatives. Under cyclization conditions some of these compounds produced spirocyclohexadienones, which are the ipso analogs to the hypothetic intermediates postula...

One of the most important characteristic curves in economic operation hydropower plants is turbine flow curve, which illustrates law fluctuation between parameters under various operating situations. This article proposes an IPSO-LSTM-based refinement method for fitting curve using deep learning methods, and verifies effectiveness by comparison to solve problem that traditional mathematical met...

Since the power grid grows and necessity for higher system efficiency is due to increasing number of renewable energy penetrations, operators need a fast efficient method operating system. One main problems in modern operation that needs be resolved optimal flow (OPF). OPF an generator scheduling meet demands with aim minimizing total production cost plants while maintaining stability, security...

Intelligent manufacturing is an important part of Industry 4.0; artificial intelligence technology a necessary means to realize intelligent manufacturing. This requires the exploration pattern recognition, computer vision, optimization, and other related technologies. Particle swarm optimization (PSO) algorithm inspired by foraging behavior birds. PSO was efficient verified lot research experim...

A reliability analysis method based on least squares support vector machines with an improved particle swarm optimization algorithm (IPSO-LSSVM) is proposed to calculate the of concrete gravity dams when explicit nonlinear limit-state functions are difficult obtain accurately. First, main failure modes and their influencing factors determined. Second, Latin hypercube sampling used create sample...