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모바일 쇼핑몰의 지각된 정보품질이 스마트폰 사용자의 쇼핑몰 사용의도에 미치는 영향
정원진 ( Won Jin Jung ) 한국정보시스템학회 2012 정보시스템연구 Vol.21 No.3
There has been an upward trend in smartphone sales in Korea as well as the rest of the world. Even though smartphones are now at the peak of their popularity, the fact that they are somewhat limited in terms of their usages for certain purposes is unexpected. Precisely, compared to PC, smartphones typically have smaller display screens with a lower resolution, which make them difficult to use in general. For instance, when customers search the information about products in mobile shopping malls, due to the smaller screen with a low resolution smartphone users may realize that it is not easy and convenient not only to search the information, but also to read the information they found in the shopping malls. This restriction could become one of reasons that lowers the perceived quality of information in the shopping malls, which in turn leads to the reluctance to use the shopping malls. A comprehensive information systems (IS) literature review found that there has been little empirical evidence on perceived information quality that affects smartphone users` intention to use mobile shopping malls. The purposes of this study is to examine 1) the effects of perceived information quality on smartphone users` intention to use mobile shopping malls and 2) the relationships among behavioral beliefs in the middle of independent and dependent variables, such as information satisfaction, perceived usefulness, and customers` attitude toward mobile shopping. A survey was conducted in March 2012. College students and practitioners took participated in the survey. Structural Equation Modeling(SEM) was used for all data analysis. The results found that there is a strong relationship between perceived information quality and smartphone users` intention to use mobile shopping malls. In addition, this study also showed that there are strong relationships among behavioral beliefs. Further research is expected to validate the findings of this study and apply them in specific contexts.
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12주간의 순환운동이 근감소증 노인 여성의 신체구성과 주요 생활습관병 지표에 미치는 영향
정원상(Jung, Won-Sang),이만균(Lee, Man-Gyoon) 한국체육과학회 2017 한국체육과학회지 Vol.26 No.6
The study was designed to examine the effects of a 12-week circuit training on body composition and surrogate indices of major lifestyle disease in sarcopenia elderly women. Twenty four sarcopenia elderly women were randomly assigned to one of two groups, i.e., circuit training group (TR: n=12) and ontrol group (CON: n=12). The subjects in TR completed 25-55 min of circuit training program for hree times a week during 12 weeks, whereas the subjects in CON were asked to maintain their normal lifestyle during the same period of the intervention. Main results of the present study were as follows: 1) Fat-free mass increased significantly in TR, whereas fat mass and percent body fat decreased significantly in TR. 2) Resting heart rate and rate-pressure product decreased significantly in TR. Fasting plasma insulin and HOMA-IR decreased significantly in TR. HDL-C increased significantly in TR. TC/HDL-C ratio and LDL-C/HDL-C ratio decreased significantly in TR. Based on the aforementioned results, it was concluded that the 12-week circuit training would contribute on improving body composition and major lifestyle disease in sarcopenia elderly women. Future research investigating the effects of various mode, intensity, duration, frequency, and period of exercise training on indices of health in sarcopenia elderly would be warranted.
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존치벽체 근접시공을 위한 강성조절용 전이프레임 기초의 실험적 평가
정원제(Jung Won-Je),박동순(Park Dong-Sun),신학용(Shin Hak-Yong),최성모(Choi Sung-Mo) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
This study was performed to decide the best shape of the foundation system (Transfer-Frame) so a new construction load can be divided evenly in a underground pile system, using cross-sectional design, analytical verification, and empirical validation with fabrication specimens and settlement analysis with ground analysis. The goal was to find conditions such that the new building could be constructed adjacent to the old building with the facades able to be preserved.
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정원도 ( Won-do Jung ),서현곤 ( Hyun-gon Seo ),김기형 ( Ki-hyung Kim ),신창민 ( Chang-min Hin ),박승민 ( Seung-min Park ),김흥남 ( Heung-nam Kim ) 한국정보처리학회 2004 한국정보처리학회 학술대회논문집 Vol.11 No.2
센서 네트워크는 센서들로 이루어진 무선 네트워크로 센서 노드들이 발생시키는 데이터들을 무선 데이터 통신을 이용해서 수집하는 네트워크이다. 이러한 센서 네트워크를 이루는 센서 노드들은 사용가능한 자원이 적어서 최대한 효율적으로 사용이 가능해야 한다. 본고에서는 이러한 점을 만족시키면서 데이터를 안정적으로 전달하기 위해서 랜덤 라우팅 프로토콜을 제안한다.
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정원도 ( Won-do Jung ),김기형 ( Ki-hyung Kim ) 한국정보처리학회 2007 한국정보처리학회 학술대회논문집 Vol.14 No.1
DNS(Domain Name Service) 시스템은 도메인 네임을 사용하여 IP를 얻을 수 있도록 해주는 시스템이다. DNS는 도메인 네임을 이용하여 IP 주소를 얻기 위해서만 사용하는 것이 아니다. 그 외에 DNS와 관련된 서비스 혹은 정보들을 DNS를 통해서 얻을 수가 있다. IP-USN (IP-Ubiqitous Sensor Network) 환경은 IP를 사용하는 USN 환경이므로 IP 네트워크에서 사용가능한 기술을 그대로 적용할 수가 있다. DNS 시스템을 이용하여 IP-USN 환경의 노드가 필요한 서비스를 탐색하기 위한 효과적인 구조에 대해서 연구한다.
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