• 한국정보통신설비학회:학술대회논문집
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• 2007.08a
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• pp.173-175
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• 2007

So far, almost all IP media services are targeted to the specific devices, for example, IPTV services are mainly for TV, and social community services are mainly for PC etc.. This paper describes newly developed media service platform in which the high quality video services can be provided not only to the TV or PC but also to the PMP(Portable Media Player) and even to the mobile phone. The major technical issues of the service platform are synchronization of contents among the different devices and high quality TV grade video display in PMP device. We confirmed successful operation of multi-device converged services in the developed media platform. We also have a trial service plan in Gwangju city at the end of this year.

• Proceedings of the Korea Multimedia Society Conference
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• 2012.05a
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• pp.190-192
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• 2012

Vehicular Ad hoc Networks (VANETs) is the new wireless networking concept of mobile ad hoc networks in research community. Routing in vehicular is a major challenge and research area. The majority of current routing algorithms for VANETs utilize indirect metrics to select the next hop and produce optimal node path. In this paper, we propose a distance and angle based routing algorithm for VANETs, which combines a distance approach with an angle based geographical strategy for selecting the next hop, with the purpose of using direct metrics to build a optimal node route. The proposed algorithm has better performance than the previous scheme.

• International Commerce and Information Review
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• v.11 no.2
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• pp.303-328
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• 2009

MERCOSUR, which is the biggest economic community in the Latin America, has great potential as Korea's export market with 220 million population and 2.8 trillion$ GDP. In the midst of global economic crises, the importance of MERCOSUR is highlighted with relatively sound economic growth. The average tariff rate of MERCOSUR is 10.4~12.2% which is almost same as that of Korea(12.2%), but the tariff rates on Korea's main export items such as auto, display, digital camera, mobile phone are as high as 20~30%, which means that Korea-MERCOSUR FTA will result in substantial growth of Korea's export. In pursuing Korea-MERCOSUR FTA, cooperations in natural resources, agriculture, mid-sized aircraft, construction and green energy as well as liberalization of commodity market are very important for Korea. To realize Korea-MERCOSUR FTA, it is essential to overcome the objections from the manufacturing sectors of MERCOSUR. So it is desirable to aim relatively low in terms of the level of liberalization at the beginning, and expand corporate and industrial cooperation between Korea and MERCOSUR's manufacturing industries.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2006.05a
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• pp.153-158
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• 2006

The emergence of ubiquitous autonomic computing and network environment will change the service architecture information system which will be a new application area in SCM/logistics systems. In this study we surveyed the technical trend map of ubiquitous and its application in SCM/logistics support system design. We described the evolutional model of ubiquitous computing community for SCM/logistics system. It is consisted of three view points; self-growing, autonomic, and context-aware, which will allow the decision makers to be benefited from web and mobile technology and are useful for proactive SCM/logistics support system. Finally, we suggested a cooperative research planning for the development ubiquitous system between the government research center, university, and industry research activities.

• Korean Institute of Interior Design Journal
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• no.30
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• pp.42-50
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• 2002

This research deals with a new concept regarding creative enlargement in order for useful space composition. Architecture, through interior design case analysis has given birth to a new concept and inspiration altering interior designer's perspectives on the future environment. Focusing exclusively on those offices that express in design terms a commitment to such concepts as team-Working, just-in-time Working, virtual and mobile working and those using the newest technological tools and the latest space-planning concepts available. Emphasis is placed on how an office environment can be designed to encourage group working, the sharing of knowledge, a spirit of community within larger organizations, and non-territorial working-employees that work where and how they want supported by cordless technologies.

• Information and Communications Magazine
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• v.27 no.5
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• pp.24-29
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• 2010

본고에서는 모바일 웹 플랫폼과 관련된 기술의 표준화 동향 및 향후 전망에 대하여 알아본다. 최근 웹 어플리케이션을 위젯 형태로 제공할 수 있는 기반기술의 표준화 작업이 활발히 진행되고 있다. 이와 관련하여 표준화 단체인 World Wide Web Consortium (W3C)와 Open Mobile Terminal Platform (OMTP)에서는 위젯과 디바이스 Application Programming Interface (API)에 대한 규격 표준화 작업을 진행 중이다. 이러한 기술은 모바일 웹 어플리케이션이 Native 언어로 개발된 어플리케이션과 동등한 수준의 기능을 제공할 수 있도록 한다. 표준 위젯 규격에 기반한 웹 어플리케이션을 어플리케이션 스토어 유통 환경으로 확대하기 위한 산업 표준 단체로서 최근 Joint Innovation Lab (JIL)과 Wholesale Applications Community (WAC)이 설립되었다. JIL과 WAC은 다수의 이동통신사의 연합체로 구성되어 개발자와 이용자, 단말에서 네트웍에 이르는 광범위한 영역에 걸쳐 관련 표준 규격을 정의하고 인프라를 구축하고 있다. 특히 WAC은 기존 산업 표준의 적극적 채용, 신속한 상용서비스 도입 등을 통해 산업과 소비자의 필요를 충족시키려 함으로써 성공 가능성을 높이고 있다.

• The Journal of the Korea institute of electronic communication sciences
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• v.2 no.2
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• pp.99-105
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• 2007

MANET(Mobile Ad-hoc network) have recently attracted a lot of attention in the research community as well as in industry. Although the previous research mainly focused on various of MANET in routing, we consider, in this paper, how to efficiently support applications such as variable geocasting basd on MANET. The goal of a geocasting protocol is deliver data packet to a group of nodes that are located within a specified geocasting region. Previous research that support geocast service in mobilie computing based on MANET have the non-optimization problem of data delivery path, overhead by frequent reconstruction of the geocast tree, and service disruption problem. In this paper, we propose the mobility pattern based geocast technique using variable service range according to the mobility of destination node and resource reservation to solve this problem. The experimental results show that our proposed mechanism has improved performance of Accessibility & Network Overhead than previous research.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06b
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• pp.393-396
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• 2010

본 논문에서는 기존 홈 네트워크 시스템에서 월패드로 대표되는 홈 컨트롤러를 대체할 새로운 서비스 단말기의 설계를 제안한다. 제안될 단말기는 기존의 홈 컨트롤러가 가진 이동성의 제약을 해결하고, 나아가 현재 위치 공간의 구별과 공간 내 디바이스의 탐색을 지원한다. 또한 디바이스의 상태와 제어에 중점을 두고 개발된 홈 컨트롤러에서 사용자가 보다 편리하게 이해하고 받아들일 수 있는 서비스 지향이동형 플랫폼을 설계하는 것을 목표로 한다.

• Journal of information and communication convergence engineering
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• v.17 no.2
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• pp.142-148
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• 2019

Relatively few countries provide separate bicycle lanes for cyclists. Hence, tools for suggesting cycling routes are essential for a safe and pleasant cycling experience. This study aims to develop a mobile application to build cycling routes based on user preferences, specifically location, search radius, ride distance, and number of optimal routes. Our application calls the Strava API to retrieve Strava cycling segments crowdsourced from the cycling community. Then, it creates a graph consisting of the start and end points of these segments. Beginning from a user-specified location, the depth-first search algorithm (DFS) is applied to find routes that conform to the user's preferences. Next, a set of optimal routes is obtained by computing a trade-off ratio for every discovered route. This ratio is calculated from the lengths of all segments and the lengths of all connecting paths. The connected routes can be displayed on a map on an Android device or exported as a GPX file to a bike computer. Future work must be performed to improve the design of the user interface and user experience.

• International Journal of Internet, Broadcasting and Communication
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• v.14 no.1
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• pp.219-223
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• 2022

The Internet can deliver various information and services at the lowest cost without time and space constraints while targeting the world among all existing means of communication. Unlike traditional media such as TV, newspapers, and radio in the past, promotions through mobile environments allow target customers to use two-way low-cost, high-efficiency promotional strategies regardless of time and place. With the development of the Internet, social media has developed into a place to acquire information about favorite companies and their products. Social media greatly contributes to the production of text, photos, videos, and various networks, and has expanded global communication and communication media through the interaction and sharing of various information. In addition, through social media, users can communicate in various ways, reveal themselves, and share and exchange information such as knowledge and personal thoughts. In line with these changes, corporate marketers and sellers are striving to provide consumers with appropriate information more quickly. We aims to find out about social media marketing strategies useful for companies.