• Electronics and Telecommunications Trends
• /
• v.19 no.6 s.90
• /
• pp.83-92
• /
• 2004

정보통신 기술은 음성, 데이터, 영상, 멀티미디어 등 모든 형태의 정보를 디지털화가 가능하도록 발전하였고, 이를 기반으로 다양한 멀티미디어 서비스가 각종의 네트워크 및 단말기를 통하여 사용자에게 제공되고 있다. 그러나 현재에는 네트워크 및 단말기 특성에 맞추어 개별적인 콘텐츠를 각각 구축하여 제공하고 있기 때문에 시스템 구축 및 관리상에 부하가 많은 실정이다. 특히 컴퓨터, 통신, 방송 등 모든 정보통신 분야가 하나의 네트워크에 연결되는 광대역통합망 기반의 네트워크 사회로 빠르게 진화되는 상황에서 단일 콘텐츠로 네트워크 및 단말기 특성에 제역을 받지 않고 다양한 멀티미디어 서비스(multi-use)를 제공할 수 있는 멀티미디어 트랜스코딩 기술은 매우 중요하다. 본 고에서는 누구나 언제 어디서나 원하는 멀티미디어 서비스를 네트워크 및 단말기에 제약을 받지 않고 끊김없이 편리하게 이용할 수 있도록하기 위한 멀티미디어 트랜스코딩 기술 동향에 관하여 기술하고자 한다.

• 정보화사회
• /
• s.121
• /
• pp.31-35
• /
• 1998

21세기를 눈앞에 둔 지금, 세계는 국가의 경제적 이익을 최우선으로 하는 경제전쟁의 시대에 있으며, 특히 선진 각국은 정보통신의 급격한 발전에 의해 도래하는 정보화 사회에서 주도적 입지를 굳히기 위해 바삐 움직이고 있다. 이러한 국제적.사회적 환경의 급격한 변화에 따라 국민들은 정부에 대한 행정의 수요 및 기대를 다양하게 표출하고 있으며, 정부도 국민에 대한 반응성이 높아지는 반면, 관료제의 영향력은 점차 감소되고 있다. 이러한 국민의 요구에 적극적으로 부응할 수 있는 수요중심의 행정을 펼치기 위해서는 정보통신기술을 전체 행정과정에 적극 도입.활용하는 행정정보화를 통해 정부의 생산성을 획기적으로 제고시키고, 공통의 정보통신기반 위에 하나로 연결된 각종 정부정보 및 서비스를 언제, 어디서나, 어떤 방법으로든, 신속히 제공할 수 있는 행정관리체계를 구축해야 한다. 이와 동시에, 정부의 업무와 조직의 혁신 등 제도적 개선이 병행될 때 비로소 경쟁력 있는 "작고 효율적인 정부"가 구현될 것이다. 본고에서는 현재 우리 나라의 행정정보 공동활용현황과 행정부문 정보화의 주무기관인 "정부전산정보관리소"에서 추진하고 있는 "정부고속망 사업"에 관해 논하고자 한다.

• Korean Journal of Community Nutrition
• /
• v.25 no.5
• /
• pp.416-429
• /
• 2020

Objectives: This study examined the personal, interpersonal and community factors related to food sufficiency and variety among Korean adults using data from the 2017 Community Health Survey. Methods: A total of 228,310 adults aged ≥ 19 years were classified into three groups: food sufficiency with variety, food sufficiency without variety and food insufficiency. Personal factors included sociodemographic characteristics, health behavior and health status. Interpersonal factors included social networking and social activities, and community factors included safety, natural environment, living environment, availability of public transportation and health care services. The association of food sufficiency and variety with interpersonal and community factors was assessed using multivariable logistic regression analyses. Results: Of the total sample, the food-sufficiency-without-variety group and food insufficiency group accounted for 31.5% and 3.2%, respectively. The sociodemographic factors associated with food insufficiency and non-variety were women, ≥ 65 years of age, with low education level, low household income, unemployed, single, and living in areas of small population sizes. There were significant differences in health behavior and health status, interpersonal and community factors among the three groups. Multivariable logistic regression analyses conducted after adjusting for confounding factors showed that lack of social networking and social activities and lower satisfaction derived from community environments were associated with the risk of food insufficiency and non-variety. Conclusions: Our results showed that interpersonal and community factors as well as personal factors were related to food sufficiency and variety. Therefore, public policies to help build social networks and participation in social activities, and improve community environment are needed together with food assistance to overcome the problems of food insufficiency and non-variety.

• Journal of Korea Port Economic Association
• /
• v.32 no.1
• /
• pp.97-122
• /
• 2016

Incheon port attained two million TEU of container throughput between 2013 and 2014 as a third port in domestic container throughput. It opened a new port in Song-do, Incheon in June 2015 to prepare for the continuing increase in container throughput.Therefore, it has provided the platform for being the major container port domestically and internationally. As the role of the new port increases, the role and direction of the Incheon port liner service network attracts attention. This study analyzes the centrality of the Incheon port liner service network by using SNA (Social Network Analysis), which was introduced in the maritime economics area recently, focusing on the Incheon port liner service network. We recognize the degree centrality, closeness centrality, and betweenness centrality of each port and its effect on the Incheon port liner service network. The study showed that for Incheon port, the centrality of the Busan port in Korea, and the Hong Kong port, is high outside the country. This helps us determine that the hub of the Incheon port is neither Shanghai nor Singapore, which ranks first and second, respectively, on container throughput. It is also helps us to know that eastern China's ports have not played a role of the hub of the Incheon port until now because of the relatively low centrality of eastern China's ports.

• Journal of Internet Computing and Services
• /
• v.18 no.6
• /
• pp.93-100
• /
• 2017

In multi-media, multi-channel era, video viewing using various digital devices via the Internet, not the existing broadcasting network, is emerging as a new broadcasting viewing behavior. OTT service is regarded as the main service of this change of viewing behavior. It is a video service that can seamlessly use any content desired by the user at any time, at any time, any device, any contents, if the Internet connection is available. The purpose of this study is to investigate the factors affecting the satisfaction of OTT service by applying the technology acceptance model (TAM). As a result of analyzing through 303 questionnaires of the early users of OTT service, social pressure, perceived popularity, perceived cost, user reputation, individual innovation, and esthetics set as external factors in this study are partially affects perceived usefulness, perceived ease of use, and perceived enjoyment. In addition, perceived usefulness, ease of use, and enjoyment are directly influencing satisfaction. Based on these results, we discuss the theoretical and practical implications and propose future research direction.

• Journal of Information Technology Services
• /
• v.13 no.2
• /
• pp.173-184
• /
• 2014

As social network services has become one of the most successful web-based business, recommendation in social network sites that assist people to choose various products and services is also widely adopted. Collaborative Filtering is one of the most widely adopted recommendation approaches, but recommendation technique that use explicit or implicit social network information from social networks has become proposed in recent research works. In this paper, we reviewed and compared research works about recommendation using social network analysis and collaborative filtering in social network sites. As the results of the analysis, we suggested the trends and implications for future research of recommendation in SNSs. It is expected that graph-based analysis on the semantic social network and systematic comparative analysis on the performances of social filtering and collaborative filtering are required.

• Proceedings of The KACE
• /
• 2017.08a
• /
• pp.79-81
• /
• 2017

본 연구의 목적은 수해양 전공학생과 일반고 학생의 스마트교육미디어 활용 유형의 차이를 탐색해 보고자 하였다. 이를 위해 스마트교육미디어 중 많이 활용되는 사회연결망서비스(SNS)의 활용 유형 차이를 살펴보았다. 수해양 관련 전공을 하고 있는 고등학생과 일반고 학생 총 2,714명을 연구대상으로 설정하였다. 연구결과 SNS 활용에서 수해양 전공 및 일반고 학생들은 정보획득 공유, 재미, 시간때우기, 사람과의 교류 목적 등의 순으로 활용하고 있었다. 상위 다섯 가지 활용 유형 중 재미있어서, 시간때우기, 사람들과의 교류, 습관적으로 항목에서 집단 간 유의한 차이가 있는 것으로 나타났다.

• Proceedings of the KSR Conference
• /
• 2007.11a
• /
• pp.1647-1656
• /
• 2007

With the growing international consensus regarding sustainable development of transportation, the plan of transportation infrastructure needs to meet various requirements toward enhancing environmental conditions. Accordingly, the upcoming long-term plan of high-speed rail network has to be reflecting the sustainability of transportation systems. In this paper, we propose methodologies based on multi-attribute utility theory for determining priorities of sustainable high-speed rail investment. The proposed methodologies identify indicators for sustainable transportation systems such as economic, environmental, social, and transportation-related ones and then, explain the way how to evaluate the overall sustainability by comparing the relative importance among indicators. This will help transportation agencies to prioritize high-speed rail investment toward sustainable transportation systems.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.20 no.12
• /
• pp.444-455
• /
• 2019

The purpose of this research was to analyze technological trends of 「Military Small Giant Venture Tech-Fi Net」 from Defense Technology Information Service via social network analysis. 「Military Small Giant Venture Tech-Fi Net」, which was constituted for their fine technology for application to the military field, registered 847 technologies of 388 companies. In this research, we analyzed 847 technologies for the relations between "Military System" and "Military Technology Category" via centrality measurement, one of the social network analysis methods. The results indicate that the major technologies of domestic military small giant venture companies were "Sensor" and "ICT" for "C4I System" and "Surveillance and Reconnaissance System" and "Platform/Structure" for "Land System", "Aeronautical System" and "Naval Sea System". In contrast, we recognized inadequate technologies, such as "Propellant" and "Material" for "Missile and Ammunition system" and "Sensor" and "ICT" for "Defense System", We hope that our results and method will be conducive to the technological development of Small Giant Venture companies.

• Journal of Digital Convergence
• /
• v.10 no.10
• /
• pp.457-463
• /
• 2012

Social network game (SNG) literally is a game based on the relationship between social network or Relationships with people is an important element in the game you need to make full use of them is that you can smooth progress. The form of a social network game activities in the social network game applications by linking corporate products and can be induced to purchase marketing and advertising through in-game social network game on the company's Web site or by connecting the mall and shop are also available. In this study, SNG business models, Case For game development, social commerce based on the new proposed future revenue model linking scheme is proposed.