the medium density fiberboard (mdf) market demand was investigated during the years from 2004 to 2013 in iran. estimation of mdf demand was made by exponential smoothing method by the year 2018. the insight into the level of demand that might exist by the year 2013 was obtained by reviewing the production, import, export, and consumption of mdf on the iran. the results show that the consumption...

a new output structure for class e power amplifier (pa) is proposed in this paper. a series lc resonator circuit, tuned near the second harmonic of the operating frequency is added to the output circuit. this resonator causes low impedance at the second harmonic. the output circuit is designed to shape the switch voltage of the class e amplifier and lower the voltage stress of the transistor. t...

Digital media art immersive scene design is a type of based on the theory positive psychology mind flow theory, using digital as main technology and tool to build certain by stimulating senses perception user so that they can achieve state immersion forgetting other things. In this paper, we discuss application experience in designing interaction devices combining intelligent sensor signal anal...

nowadays, high-voltage circuit breakers have reached such high short-circuit capabilities that testing them under the full rated voltage is generally not possible with direct tests, and they are conducted by using the synthetic test methods. although the phenomena associated with making tests is of particular importance especially in case of load break switches, but making tests are rather disr...

This paper deals with ridge estimation of fuzzy nonparametric regression models using triangular fuzzy numbers. This estimation method is obtained by implementing ridge regression learning algorithm in the La- grangian dual space. The distance measure for fuzzy numbers that suggested by Diamond is used and the local linear smoothing technique with the cross- validation procedure for selecting t...

A new electrically driven gas booster is described as an alternative to the classical air-driven boosters known for their poor energetic efficiency. These are used in small scale Hydrogen storage facilities and refueling stations vehicles. In such applications overall energy count of significance must include efficiency compression stage. The proposed system uses electric motor instead pneumati...

this paper presents a new arc starter circuit that is usable in manual metal arc welding (mma) power supplies. the proposed circuit uses an auxiliary circuit and a series coupling transformer for adding high frequency spikes to output dc voltage during arc striking. the proposed circuit is usable in inverter based arc welding supplies and it could result in a decrease of weigh, volume and expen...