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In this article, we survey different types of big data techniques such as Hadoop, NoSQL, and R and how semantic computing can be utilized to improve these methods. We explain the terms big data and semantic analysis. We discuss how big data analysis and semantic analysis are utilized in different domains such as healthcare and business.

The conventional ultrasonic nozzle produces a mist by applying an ultrasonic vibration into a non-flowering liquid. In this paper, we first present a novel designed nozzle type sprayer that is able to apply an ultrasonic vibration directly to the moving liquid and generate a mist instantly. For the novel nozzle, a ring-type actuator of the novel nozzle was designed and built using the PZW-PMN-PZT ceramics. This paper will describe a variety of physical, mechanical, and electrical characteristics of the ultrasonic nozzle. The characteristics of the mist particles was also measured as the amount of the outflow liquid was varied.