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IPTV 서비스 영향요인과 지속적 사용의도에 관한 실증연구
한준형(Joonhyoung Han),문태수(Teasoo Moon) 한국인터넷전자상거래학회 2011 인터넷전자상거래연구 Vol.11 No.2
Recently, digital satellite broadcasting services and broadband Internet services are growing rapidly. In addition, users have become to choose a variety of medias and communication products or services. Among consumer-related companies are attracting increasingly competitive, IPTV vendors as part of their marketing promotion are committed to conduct experiential marketing to attract new customers. In competitive environment, to identify the influencing factors that affect continuous use of IPTV service is a key issue to preempt competitive advantage. In this study, we identified antecedent factors to affect continuous use of IPTV service, with a survey to find out the positive impact between user attitude and continuous use based on Technology Acceptance Model (TAM). We collected 273 sample data on people with IPTV experience by conducting a survey. As a result, contents quality as media characteristics affects perceived usefulness and perceived ease of use. However, innovation tendency as individual characteristics does not affect perceived ease of use, and the relationship between ease of use and usefulness was rejected. It means that IPTV has difficult problems of complex operations compared to traditional TV. To maintain existing customers and acquire new customers of IPTV service, IPTV vendors have to manage service contents with quality available in competitive environment as a key factor, with more convenient and easy to use.
Park, Joonhyoung,Myoung, Hoon The Korean Association of Oral and Maxillofacial S 2016 대한구강악안면외과학회지 Vol.42 No.4
In prolonged chronic osteomyelitis, chronic inflammation and low-grade infections can result in new periosteal bone formation. Chronic osteomyelitis with proliferative periostitis (traditionally termed $Garr{\acute{e}^{\prime}s$ sclerosing osteomyelitis) mainly affects children and young adults. Here, we present two rare cases of an 11-year-old and a 12-year-old patient with suppurative chronic osteomyelitis with proliferative periostitis without any definitive infection source, such as dental caries or periodontitis. The source of infection was likely to be related to the development of a lower right third molar germ with follicular space widening. Management involved antibiotics and the removal of the third molar germ and surgical debridement. Disease remission and a normal appearance was observed at the six-month follow-up visit.
류준형(Joonhyoung Ryu),배창한(Changhan Bae),백광선(Kwangsun Baik),이강원(Kangwon Lee),김재원(Jaewon Kim),지해영(Haeyoung Ji) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10
철도차량에는 역행과 제동을 위하여 추진제어용 전력변환장치와 견인전동기로 구성되는 추진제어장치가 설치되어 있는데, 제어특성에 따라 특유의 스위칭 소음이 발생된다. 국내에서 운영되는 철도차량의 추진제어장치는 관련법령에 따라 소음기준에 적합하도록 제작되어야 하는데, 추진제어용 전력변환장치의 소음시험은 구성품 단계에서 견인전동기와 조합하여 운전상태를 변화시키며 발생소음이 최대인 운전상태에서 측정한다. 소음수준은 운전조건과 부하조건 등에 따라 달라지며, 측정위치에 대해서도 영향을 받는다. 본 논문에서는 운전조건에 따른 추진제어용 전력변환장치의 소음수준 변화와 주파수분석을 통하여 견인전동기 속도에 따른 주파수 분포 추이를 분석한다. In the rolling stock, there is a propulsion control unit which is consisted of traction converter and traction motor for powering and braking. It makes the typical switching noise according to the control characteristics. The propulsion control unit installed in domestic rolling stock should be suitable for related regulation. The noise test for traction converter is performed in sub-system phase which is combined to the traction motor and operated with variable powering command. The noise test results are obtained entire speed range operation from maximum equivalent noise level. The equivalent noise level is changed according to the operation mode, load condition and position of the test. This paper analyzes the variation of equivalent noise level and noise spectrum according to the operating condition.
협업적 제품 거래 환경에서 STEP기반의 제품정보 추출 시스템
김준형(Joonhyoung Keem),박상호(Sangho Park),김 현(Hyun Kim) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
Collaborative product commerce (CPC) supports a collaboration that a global enterprise and customer<br/> related to life cycle of product share product information and a collaboration process for the<br/> collaboration, and integrating applications. In this paper, we use common data schema in order to solve<br/> a interoperability problem about shared product information between enterprises. And we map to<br/> common data schema from each other different data format. Therefore we implement CPC Adaptor in<br/> order to integrate distributed product information.
IPTV 서비스의 지각된 가치와 지각된 즐거움, 그리고 지속적 사용의도에 관한 실증연구
한준형(Joonhyoung Han),문태수(Teasoo Moon) 한국인터넷전자상거래학회 2012 인터넷전자상거래연구 Vol.12 No.2
The rapid development of telecommunication technology changed existing one-way analog service into two-way digital media service. IPTV service as a convergent platform in technological mechanism of broadcasting and telecommunication, is attracting new customers with realtime broadcasting service. Recently, the competition among IPTV service vendors to secure a share of the new market is intense. IPTV service vendors as part of their marketing promotion are committed to conduct experiential marketing to acquire new customers. To identify the influencing factors that affect continuous use of IPTV service in competitive environment, is a key issue to obtain competitive advantage. This study intends to identify antecedent factors to affect perceived value and perceived enjoyment of IPTV service, and find out the relationship between these factors and continuous intention to use. 273 sample data on people with IPTV experience were collected via survey process. As a result, contents quality as media characteristics influences perceived value and perceived enjoyment, and interactivity influences perceived enjoyment. However, instant connectivity does not affect perceived value and perceived enjoyment, and interactivity also does not affect perceived value. From value-based perspective, this results show that IPTV vendors have to provide customers the various services with quality contents and interactivity to acquire new customers.