2019, Vol.14, No.6

Journal of Knowledge Information Technology and Systems 2023 KCI Impact Factor : 0.89

pISSN : 1975-7700 / eISSN : 2734-0570
https://journal.kci.go.kr/kkits

In this paper, a method for analyzing breathing characteristics in real time by measuring the change in air pressure intensity flowing through the nasal cavity when snoring occurs, and an algorithm for separating and detecting signal components with converting the measured continuous time signal into discrete time signal were proposed. A commercial digital miniature piezo-resistive sensor was inserted into the nasal cavity to measure changes in air pressure intensity during breathing. The snoring phenomenon was analyzed with snore-breathing vibration within the audible frequency band, using the magnitude of the change in respiratory air pressure and the frequency characteristic causing the auditory effects. Although the digital small piezo-resistive sensor used in this experiment works slowly, we used the undersampled data for the digital signal processing because the purpose of the signal measurement is to obtain slowly varying respiratory air pressure signal and to detect and existence of snoring itself, not to analyze the exact frequency components of a snoring signal. Through this process, the normal respiratory signal component and the abnormal snoring signal component were separated using a real-time digital filter with the characteristic of they have different frequencies each other. And the snoring signal was detected with the envelope detection method to detect the length of time for snoring duration. Further, it is necessary to study the medical meaning analysis of the separated abnormal signal components, and to apply it to various types of snoring phenomena to be applied in real life.

Recently, In the wake of the satellite service industry research has been spreading to convergence science. As a representative field of cross-platform technology lead to user driven approach about space application services. Universal Middleware could be make pre-design review step of small satellite unit development. It could be develop to easy integration for user application services between internal interface module and 3rd party’s information services. In this study presents extensible way between each module that consist of dynamic and correlation application services for small satellite development model unit. This model could be adopt to the on-board computer interfaces such as a satellite control data field unit, define function and etc. This interface module transfer a data and service process for applying to each unit of intelligent requirement and development parameter. The condition of requirements are proposed with public protocol and private interface module with variable simulation way. Consequently, look into the extensible and dynamic module of three structural model for a small satellite system to the on-board computer. Firstly, the shared instance model of dynamic module support between service registry and inventory that consist of Satellite Application Platform. It suggested interoperability process of connect to tracking and event handling. Secondly, it should be make sure about the way of dynamic module that private message model. It could be make figure out the function of each relation. Thirdly, it take a real time application load model with application launcher via extended public protocol and network inventory.

Since a global breakdown of the recession in 2009, smart factory has been spotlighted as a new means to counter the manufacturing industry's crisis caused by labor shortages, excessive hikes in manufacturing costs and slowing productivity. With the rapid development of technologies leading up to the 4th Industrial Revolution, there are various research about smart factory as a means of creating new values. On the other hand, there is a negative perception. In order to establish a true smart factory, digital transformation of the entire manufacturing value chain must be preceded. It requires a tremendous amount of time and technical investment. Hence, some people doubt the feasibility of smart factory. Therefore, the purpose of this study was to find out the characteristics of two-sided value recognition of smart factory by deriving major issues for domestic smart factory and to contribute to the revitalization of the industry for smart factory. To this end, the major issues of smart factory in Korea were derived by conducting text network analysis based on 17,376 news reports from January 1, 2014 to December 31, 2018. As a result, trends in government-led projects, technology trends, industrial trends, and universities and education businesses were generally identified. On the government side, it was found that government wants to simultaneously create jobs and economic growth through a smart factory. In terms of technology, smart factory was being activated based on the world's first commercialized 5G network technology. On the industrial side, smart factory projects was led by a large corporations, and the business area was expanding from automobiles to energy. In terms of education, it was found that Universities in the Chungcheong provinces were found to be concentrating on nurturing human resources, mainly by establishing new departments related to smart factory.