• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.35 no.5
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• pp.445-451
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• 2022

Ultrasonic sensor is suitable as a next-generation autonomous driving assist device because its lower price compared to that of other sensors and its sensing stability in the external environment. Although Pb(Zr, Ti)O₃ (PZT)-relaxor ferroelectric system has excellent piezoelectric properties, the change in capacitance is large in the daily operating temperature range due to the low phase transition temperature. Recently, many studies have been conducted to improve the temperature stability of ferroelectric ceramics by controlling the grain size and crystal structure, so it is necessary to study the effect of the grain size on the piezoelectric properties and the temperature stability of PZT-relaxor ferroelectric system. In this study, the piezoelectric properties, phase transition temperature, and temperature coefficient of capacitance (TCC) of 0.9 Pb(Zr_1-xTi_x)O₃-0.1 Pb(Zn_1/3Nb_2/3)O₃ (PZT_x-PZN) ceramics with various grain sizes were investigated. PZT_x-PZN ceramics with larger grain size showed higher piezoelectric properties and temperature stability, and are expected to be suitable for ultrasonic devices in the future.

• Electronics and Telecommunications Trends
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• v.31 no.2
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• pp.107-115
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• 2016

5G 이동통신은 고속 고품질의 이동통신장비, 서비스 플랫폼, 휴대 융복합 디바이스를 통해 언제 어디서나 사람 사물 정보가 유기적으로 연결되어 모든 사용자에게 맞춤형 실감 서비스 및 신규 융복합 서비스를 제공하는 고부가가치 기술이다. 에릭슨, 노키아, 화웨이, 삼성전자 등 주요 이동통신 단말 장비업체들은 5G 기술개발에 적극적으로 임하고 있으며 NTT도코모, KT, SK텔레콤, LG유플러스 등 이동통신사업자들과 공동으로 기술개발에 협력하고 있다. 이들은 5G 이동통신 비전으로 끊김이나 지연이 없는 서비스 제공 및 제한 없는 접속, 사용자가 원하는 것을 알아서 찾아 실시간으로 서비스를 구현하는 것을 제시하고 있다. 국내 5G 이동통신 산업이 보다 발전하기 위해서는 상호 협력에 기반한 5G 기술개발과 국제화 대응전략의 추진이 필요하다.

• Journal of Convergence for Information Technology
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• v.7 no.6
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• pp.79-87
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• 2017

The purpose of the convergence study is to confirm the relevance between communication awareness and communication ability and communication self-efficacy. The subjects were 128 college students studying convergence education. They answered to a self-report questionnaire during March 13 to 24, 2017. The instrument for Awareness toward communication, Communication ability, Communication self-efficacy was done by Likert 5 point scale. Data was analyzed by technical statistics, t-test, one way ANOVA, Pearson's correlation coefficient and post-hoc Scheffe test using SPSS/Win 21.0 program. As a result, awareness toward communication level $3.50{\pm}.41$ point, communication ability $3.32{\pm}.38$ point and communication self-efficacy $3.00{\pm}.40$ among. Communication Awareness was positively correlated with communication ability level and communication self-efficacy. If there is an intervention program that improve the level of communication self-efficacy, it is expected to enhance the communication ability.

• Ceramist
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• v.12 no.2
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• pp.7-12
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• 2009

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.495-498
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• 2009

In Ubiquitous computing environment, as the requirements of various services and combination of personal digital assistant are increasing, the standards and technologies have been developing all over the world. Also, ubiquitous government is planning to provide seamless service therefore, the demand is very high about infrastructure of service combination which connects various governmental systems. As a result, it is required that the Service-Oriented Architecture (SOA) and technical developments which combine various services, devices and terminal accepting to use seamless service convergence in ubiquitous computing environment. In this paper, I suggest to combine for a single web service to use Business Process Management (BPM). It can be expected to develop technologies efficiently and effectively by reusing web services, and reducing mistakes and faults of the development.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.499-502
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• 2009

Supply of electric power and electricity safety for whole system and network are essential element. Electricity safety technology need rating for product and research about certification as product development that is done cotton flannel mixed with development of u-IT technology consists. Study on serve to develop electricity safety integration supervision system to apply product to u-City electric power appliance and cotton flannel mixed of u-IT appliance, Connection badness sensing instrument made device built-in electric power IT cotton flannel mixed in outlet that is used most in electric power appliance terminal. Using sensor on ZigBee, RFID performance estimation of communication and module for remote safety check of electricity safety integration supervision system. A performance experiment and estimation in PD, Arc detection diagnosis system and certification KS, electricity safety about product that get fitness finding.

• Convergence Security Journal
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• v.13 no.3
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• pp.3-8
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• 2013

Recently, the technology and services make progress in IT sector to facilitate the rehabilitation, as well as the exercise that aims to promote the health. To provide the opportunity for new services, various challenges have to be fulfilled, including the blurring boundaries among industries, spread of new technologies, and various demands. Seizing on this opportunity, the fusion and convergence have been accelerated. The trends towards the fusion and convergence are inherent in content industry and spreading to other sectors, which makes the cultural desire of customers fulfilled in a more diverse manner. In particular, the research has been conducted, using the game, in the new technology cultural contents which have shown noticeable fusion and convergence between IT and exercise rehabilitation areas. Such games can be classified into the motion-based game, serious game, and virtual reality game. Those game contents are forming the market fast based on the contents for education, sports, exercise rehabilitation, healthcare, etc., and have very great potential for growth. This study is intended to analyze the fusion and convergence system of exercise rehabilitation through those games and present a direction for future development.

• Trans-
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• v.2
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• pp.191-210
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• 2017

The purpose of this study is verifying whether convergence does its role as a transfer medium in dance expression or not, finding the effect of convergence characteristics and confirming whether it would bring change and new creation in performance art or not. This study suggests that studies on convergence in dance are required in accordance with the trend of time. This study believes that convergence is a modern art expression method, which can maximize the artistic expression in dance work and it will play an important role in the advance of dance works. There are ongoing studies on convergence art genre by many creators; however, still academic study this matter is not sufficient. Therefore, it is believed that more studies on convergence genre from the viewpoint of human studies are required. Accordingly, this study took Blush, the dance art works of Wim Vandekeybus, as the subject of study because convergence is clearly visible in these works. It is possible to draw convergence from these works because the works attempt new creation and utilize image by accommodating other genre art in dance art. The convergence in these works maximizes the originality of choreography and expands the time and space of stage through various effects. In other words, it is possible to see that Wim Vandekeybus is doing new attempts in his dance works by experimental elements, which escaped from simple movement, and convergence appears in the works.

• Information and Communications Magazine
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• v.29 no.10
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• pp.25-29
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• 2012

최근 전 세계적으로 차세대 웹 기술인 HTML5(Hyper Text Markup Language ver. 5)는 기존 웹 기술의 고도화를 넘어 미래 IT융복합 서비스 실현을 위한 플랫폼으로서 그 중요성이 더욱 증대되고 있다. 본 고에서는 HTML5를 중심으로 플랫폼으로서의 미래 스마트미디어 (Smart Media)를 전망해보고자 한다. 특히 HTML5의 등장은 최근 도메인간 서비스 융 복합이 다변화되는 ICT 환경에서 그 역할이 더욱 중요해지고 있으며, 다양해지는 서비스와 미디어들과의 결합은 더욱 똑똑해지는 미디어 즉 스마트미디어의 실현으로 이어지고 있다. 따라서, 본 고에서는 미래 서비스 융복합 기술 그리고 나아가 플랫폼으로써 HTML5에 대한 주요 특징과 시사점을 살펴보며, 스마트 미디어 플랫폼으로서의 역할과 활용 및 대응 전략 등을 고찰해보고자 한다.

• Journal of Digital Convergence
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• v.20 no.5
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• pp.275-280
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• 2022

This paper intends to propose a technology for recommending convergence/composite art playlist contents that are fused with tags suitable for the user's situational information and taste to users for non-face-to-face art appreciation education. For the implementation of the proposed technology, the characteristics of works of art are analyzed, and related music and works of art are matched based on the tags of the analyzed works. In addition, we would like to propose a technology that automatically creates content for fusion and complex art viewing playlists using matched works.