• 한국경영정보학회:학술대회논문집
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• 2007.11a
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• pp.402-407
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• 2007

웹2.0이라는 개념과 트랜드는, 개방성, 사용자 참여, 집단 지성, 인간중심의 IT 서비스 등을 키워드로 하는, 플랫폼 기반 비즈니스 모델을 통칭한다. 전세계적 블로그 열풍이나, Googlization으로 불리기도하는 주요 웹포탈의 성장은 이러한 현상을 뒷받침하는 증거이며, 미래 인터넷 시장을 개척하는 엔진으로 자리잡고 있다. 그런데 웹2.0을 기술적으로(descriptive) 소개하거나 관련된 요소기술에 대한 문헌은 많음에도 불구하고, 이러한 현상을 경영/경제학적 시각에서 체계적으로 분석한 연구는 의외로 많지 않다. 본 논문에서는 기존의 웹(웹1.0)과 웹2.0 서비스 모형을 경영 경제학적 관점에서 구조화하고, 이들 서비스 모형을 Stakelberg 게임의 관점에서 분석한다. 특히 본 연구에서는 웹2.0의 다양한 국면 중에서 프로슈밍(prosuming)에 초점을 맞춘다. 분석 결과, 웹2.0에서 사용자 후생이 웹1.0에 비해 크게 증가한다는 것을 확인할 수 있었다. 또한 사용자 스스로 맞춤화된 정보를 창출하는 노력과 한계편익간의 비율을 나타내는 ${\delta}_c$('고객화 요소'로 부름) 분포의 범위(파라미터 ${\delta}$)가 사회후생에 중요한 역할을 함을 발견하였다. 이는 고객화 요구의 다양성이 커짐에 따라 사용자 후생을 비롯한 사회후생도 증진됨을 의미한다.

• Proceedings of the Korean Information Science Society Conference
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• 2007.06d
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• pp.220-224
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• 2007

번호이동성은 이용자가 사업자, 위치, 서비스 등을 변경하더라도 기존에 사용하던 전화번호를 그대로 사용 할 수 있도록 하는 제도로써 통신 산업의 경쟁을 활성화하고 이용자의 편익을 증진시키기 위해 도입되었다. 현재는 시내전화 내 또는 이동전화 내에서와 같이 단일 역무 내에서만 번호이동성이 시행되고 있지만, 광대역통합망(BcN)과 같은 IP기반의 컨버전스 네트워크 상의 번호이동성에서는 URI 기반 라우팅, 이종 역무간 번호이동과 같은 고려사항이 발생하게 된다. 본 고에서는 BcN 상의 번호이동 시스템을 구현하기 위한 ENUM DNS 활용방안을 제시하고자 한다.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2008.10a
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• pp.335-336
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• 2008

최근 ITS(Intelligent Transportation Systems)의 보급으로 개인의 기-종점 간 통행시간에 많은 비용절감을 가져왔다. 지금까지의 주요 최단경로알고리즘은 네트워크의 기-종점(Origin-Destination) 거리 간 최단 통행시간을 고려하여 연구되어 왔다. 하지만, 최근 대두되는 고유가 시대의 진입과 더불어 환경에 대한 인식이 높아짐에 따라 기-종점 간 통행시간만을 고려하던 기존의 방법들에서 벗어나 추가적인 요인들의 고려 필요성이 증대되고 있다. 따라서 본 연구에서는 지리정보시스템을 이용한 환경오염을 최소화하는 친환경 최단경로 탐색방법 개발을 제안하고자 한다. 이를 위하여 3D 좌표정보 도로를 활용하여, 도로구배 조건에 따른 배출가스의 증감율을 환경오염편익으로 구분하고, 이를 사회적비용으로 환산하여, 경로탐색의 추가적인 요소로 반영하였다.

• Journal of the Korean Regional Science Association
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• v.37 no.3
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• pp.3-18
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• 2021

The fourth Industrial Revolution is transforming the industrial structure of the region, and it is necessary to develop new industries and technologies that reflect regional characteristics. The purpose of this study is to measure the knowledge relatedness and technological complexity in Busan, Ulsan, and Gyeongnam, and to identify technologies with potential for regional industrial differentiation strategies. Using patent data from 2015 to 2019, co-occurrence matrices were derived from 652 IPC codes, and the knowledge relatedness density and technology complexity index were calculated. Network analysis was performed using the knowledge relatedness density. As a result of analysis, it was found that mechanical engineering occupied a large proportion, followed by chemistry and electrical engineering. As a result of applying the risk-benefit framework to derive technologies with the potential to differentiate local industries, the technological capabilities of low-risk-high-benefit were different. Among mechanical engineering, technologies such as engine, machine operation, and transportation were included in Busan. In Ulsan, environmental technology in chemical and materials, and heat treatment technology in mechanical engineering were technologies with low-risk and high-benefit capabilities. Gyeongnam showed competence in mechanical engineering, chemistry, and electrical engineering in some areas such as Gimhae, Yangsan, and Changwon. The results of this study are meaningful in that they identified technologies with potential for selecting and deriving strategic industries for regional growth based on latent knowledge in the region.

• Spatial Information Research
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• v.19 no.4
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• pp.11-20
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• 2011

In accordance with low carbon and green growth paradigm, a subway is one of major public transit systems for resolving traffic congestion and decreasing traffic accidents. In addition, as subway networks expand, passengers' travel pattern in the subway network change and consequently affect the urban structure. Generally, new subway route has been planned and developed, mainly considering a travel demand forecast. However, it is desired to conduct an empirical analysis on the forecast model regarding change of travel accessibility and passenger demand pattern according to new subway line. Therefore, in this paper, an alternative method, developed based upon a spatial syntax model, is proposed for evaluating new subway route in terms of passenger's mobility and network accessibility. In a case study, we constructed subway network data, mainly targeting the no 9 subway line opened in 2009. With an axial-map analysis, we calculated spatial characteristics to describe topological movement interface. We then analyzed actual modal shift and change on demand of passengers through the number of subway passenger between subway stations and the number of passenger according to comparative bus line from Smart Card to validate suggested methods. Results show that the proposed method provides quantitative means of visualizing passenger flow in subway route planning and of analyzing the time-space characteristics of network. Also, it is expected that the proposed method can be utilized for predicting a passengers' pattern and its impact on public transportation.

• Information Systems Review
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• v.11 no.1
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• pp.161-179
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• 2009

Nowadays an increasing number of Internet users are running individual websites as Blog or Cyworld. As this type of personal media has a great influence on communication among people, business comes to care about Network Effect, Network Software, and Social Network. For instance, Cyworld created the web service called 'Minihompy' for individual web-logs, and acquired 2.4milion users in 2007. Although many people assumed that the popularity of Minihompy, or Blog would be a passing fad, Cyworld has improved its service, and expanded its Network with various contents. This kind of expansion reflects survival efforts from infinite competitions among ISPs (Internet Service Provider) with focus on enhancing usability to users. However, Cyworld's Network Effect is gradually diminished in these days. Both of low production cost of service vendors and the low searching/conversing costs of users combine to make ISPs hard to keep their market share sustainable. To overcome this lackluster trend, Cyworld has adopted new strategies and try to lock their users in their service. Various efforts to improve the continuance and expansion of Network effect remain unclear and uncertain. If we understand beforehand how a service would improve Network effect, and which service could bring more effect, ISPs can get substantial help in launching their new business strategy. Regardless many diverse ideas to increase their user's duration online ISPs cannot guarantee 'how the new service strategies will end up in profitability. Therefore, this research studies about Network effect of Cyworld's 'Minihompy' using System-Dynamics method which could analyze dynamic relation between users and ISPs. Furthermore, the research aims to predict changes of Network Effect based on the strategy of new service. 'Page View' and 'Duration Time' can be enhanced for the short tenn because they enhance the service functionality. However, these services cannot increase the Network in the long-run. Limitations of this research include that we predict the future merely based on the limited data. We also limit the independent variables over Network Effect only to the following two issues: Increasing the number of users and increasing the Service Functionality. Despite of some limitations, this study perhaps gives some insights to the policy makers or others facing the stiff competition in the network business.

• Journal of Digital Contents Society
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• v.10 no.1
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• pp.169-175
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• 2009

Grid computing is an application to obtain the most efficient performance from computing resources in terms of cost and convenience. It is also considered as a good method to solve a problem that cannot be settled by conventional computing technologies such as clustering or is requiring supercomputing capability due to its complex and long-running task. In order to run grid computing effectively, it needs to connect high-performance computing resources in real-time which are distributed geographically. Answering to the needs of this grid application, researchers in several universities with Argonne National Laboratory in the USA (ANL) as the main axis have developed Globus. It is noticed, however, that the quality of service (QoS) is not guaranteed when certain jobs are exchanged through networks in the context of Globus. To tackle with this problem, the ANL has invented Globus Architecture for Reservation and Allocation (GARA). The researchers of this paper constructed a testbed for evaluating the ability to reserve resource in the GARA system and implemented the GARA code for it. We analyzed the applied results and discussed future research plans.

• Journal of Convergence for Information Technology
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• v.7 no.3
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• pp.165-171
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• 2017

Recently, the development and dissemination of smart devices linked to the network are being actively performed, and IOT(Internet of things) is issued form of mutually cooperative relationship through interoperation within smart devices. In this paper, we propose an innovative intelligent coffee shop management system by sharing and cooperatively controlling smart devices and Internet devices. The system can order smartphones including kiosk orders and beacon-based user identification. And it is a system that can make custom order without grasping user location information using geofence. The paper provides weather, temperature, time and user-based recommendation services based on Big Data. Therefore, the system is increased cost reduction and work efficiency than general coffee shops.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.1
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• pp.109-112
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• 2014

Korean informationization technology development speed is growing fastly and IT technology become world-class. Especially, by grafting IT technology to war commanding system, built an network center operational environment. However, conscription administration and the barracks informationization have inadequate points, to provide the people who have a duty of military service and parents with benefits and develop conscription administration and the barracks informationization base system conformed to IT age include using online system to guarantee military personnel's studying environment, writer proposed an improvement plan.

• 정보화사회
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• s.185
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• pp.14-14
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• 2007

세계는 1990년대 중반 '정보화 혁명'에 이어 2000년대 중반 이후에는 '디지털 융합 혁명'이라는 새로운 물결에 직면해 있다. 디지털기술의 발전과 전송망의 광대역화에 따라 전통적으로 서로 다른 영역이었던 통신과 방송이 네트워크, 서비스, 단말기, 콘텐츠 차원에서 경계가 허물어지는 통신.방송 융합현상이 가속화되고 있다. 이에 따라 IPTV, DMB, 웹캐스팅, 데이터방송 등 기존의 통신과 방송의 속성을 모두 가진 서비스가 우리들의 실생활에 속속 등장하고 있다. 이러한 융합현상은 이용자에게는 새로운 융합서비스 이용을 통한 편익 증진뿐만 아니라 통신.방송 전반의 산업구조까지 근본적으로 변화시키고 국가 경쟁력을 높일 수 있는 좋은 기회가 될 것으로 보고 있다. 이미 세계 주요국은 IPTV서비스를 도입하고 있으나, 세계 최고의 정보통신 인프라를 보유하고 있는 우리나라는 안타깝게도 법제도 정비의 지연으로 아직 도입을 못하고 있다. 우리나라는 IPTV 도입뿐만 아니라, 디지털방송 활성화, 디지털콘텐츠 육성 등 풀어나가야 할 현안들이 산적해 있다. 또한 방송과 통신 전반에 걸쳐 정책과 규제체계를 융합환경에 맞추어 새롭게 설계해야 하는 과제도 있다. 이러한 과제를 순조롭게 해결하기 위해서는 우선적으로 정책과 규제기구를 융합환경에 맞게 개편하는 것이 시급하다. 이번호에서는 방송통신 융합의 주요 이슈 가운데 가장 시급하게 해결해야할 방송.통신 기구개편과 대표적인 방송통신융합서비스인 IPTV서비스 도입정책방안 그리고 방송통신융합법에 대해 전문가들의 특별기고를 통해 살펴보는 자리를 마련한다.