• 한국산학기술학회논문지
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• 제9권3호
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• pp.702-709
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• 2008

본 논문에서는 개인화와 이동성을 결합하여 제공될 수 있는 유비쿼터스 위치 기반 서비스 기반의 u-마케팅 시스템 프로토타입을 개발하였다. u-마케팅 시스템은 기존 모바일 마케팅 시스템을 보다 더 효율적으로 지원하는 u-LBS 기반 기술을 활용한 u-마케팅 콜센터이다. 지금까지의 모바일 마케팅이 불특정 다수의 고객에게 일방적으로 홍보 내용을 전달하는 스팸 방식에 마케팅이었다면, u-마케팅 시스템은 u-LBS 기반 기술을 활용하여 이동통신사 가입 회원의 성별, 연령, 거주지, 직업과 그리고 휴대폰의 위치정보나 GPS를 통하여 가입자의 위치정보를 활용함으로써 회원사가 원하는 맞춤형 타겟 마케팅을 지원할 수 있는 위치기반의 유비쿼터스 마케팅 시스템이다.

• 인지과학
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• 제21권4호
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• pp.697-723
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• 2010

최근 연구들은 생존 맥락에서의 대상 기억이 다른 여러 맥락 조건들에서보다 더 정확함을 보고하고 있다(예, Nairne 등, [1]). 본 연구에서는 이러한 생존 맥락의 효과가 과제와 무관한 대상의 위치에 대한 기억에서도 나타나는지를 알아보고, 대상 위치 기억의 성차가 맥락에 따라 달라지는가를 살펴보고자 두 개의 실험을 진행하였다. 참가자들은 생존 맥락이나 혹은 이주 맥락 중 하나의 맥락 하에서 여러 위치에 순차적으로 제시된 사진(실험 1)이나 혹은 단어(실험 2)에 대한 맥락 적합도를 평가하는 과제를 수행한 후, 각 자극에 대한 회상 검사와 위치 기억 검사를 받았다. 실험 결과, 두 개의 실험 모두에서 생존 맥락 조건에서의 대상에 대한 회상율이 이주 맥락 조건에 비해 더 높은 것으로 나타났다. 위치 기억의 경우는 여성이 남성보다 더 좋은 것으로(실험 1), 그리고 생존 맥락에서 더 정확한 것으로(실험 2) 나타났으며, 자극의 종류 및 제시 방식에 따라 기억맥락 조건과 성별간의 상호작용 효과가 나타났다. 이 결과는 위치 기억에 있어서 기억의 부호화 맥락이 성별에 따라 다른 영향을 미치고 있음을 시사하는 것이다.

• 경영과정보연구
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• 제5권
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• pp.185-209
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• 2000

A review of shows that past research has focused predominately on foreign market entry strategy issues in relatively well-established firms. These studies have either ignored venture firms or have failed to treat these firms separately. Only recently, researchers have broadened their search to include aspects of the foreign market investment of the venture. The purposes of this study are to identify and explain the impact factors such as ownership specific advantage, transaction cost, and location specific advantage on the choice of foreign market entry strategy for venture firms. To find the perceived the foreign market entry strategy and determinant factors, 130 venture CEOs from the computer and communications equipment industries were asked to describe their venture's foreign market entry strategy through 17 questionnaire items on competitive method. Using factor analysis, the six determinant factors were categorized. To test the relationships between the foreign market entry strategy and factors such as ownership specific advantage, transaction cost, and location specific advantage, the data collected by questionnaire from 92 ventures. The main results of this research are as follows. First, the factors of ownership specific advantage have partially significant impact on the foreign market entry strategy of venture firms, Second, the factors of transaction cost have significant impact on their foreign market entry strategy. Third, the factors of location specific advantage have significant impact on their foreign market entry strategy. This study has produced evidence to demonstrate that the foreign market entry strategy profile of venture firms can be distinguished from those of relatively well-established firms. An expanded study would allow for stronger conclusions regarding the relative explanatory power of individual variables in the method. Additional research is also needed to examine other determinant variables connecting foreign market entry strategy.

• Journal of Communications and Networks
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• 제3권4호
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• pp.351-360
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• 2001

This paper introduces an approach for providing Location Based Services (LBS) using Spatial Location (SLO) information within the Session Initiation Protocol (SIP). The aim of the paper is to set up the framework for providing LBS services in devices connected to wire and wireless IP networks. This method uses SIP as transport and the SLO as data formal inserted in the SIP pay-load. It analyses the relationship among the network elements involved in the architecture, and its functionality fur providing access to network services regardless of the user location. In conclusion, this proposal enables SIP to support location-related services such as messaging, location-based commerce, and any location-based computing. Furthermore, it describes the advantage of adding the user location information network resources optimization in mobile environments and future networks.

• 한국컴퓨터정보학회논문지
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• 제14권1호
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• pp.117-125
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• 2009

하이브리드 무선 네트워크에서는 MANET의 모바일 노드가 다른 모바일 노드와의 통신 및 인터넷에 있는 노드와 연결되어 통신을 한다. 이런 네트워크는 기존의 한정된 응용 영역을 가지고 있던 MANET을 다양하고 일반적인 응용 영역으로 확장시켜 줄 수 있다. 이전의 하이브리드 무선 네트워크에서의 라우팅 프로토콜들은 노드의 위치 정보사용을 고려하지 않았다. 위치 정보를 이용하는 라우팅 프로토콜은 기본적으로 제어 메시지에 의한 오버헤드를 줄여 줄 수 있고 하이브리드 무선 환경에서 네트워크가 효율적으로 동작 할 수 있게 도와 줄 수 있다. 본 논문에서는 하이브리드 무선 네트워크에서 위치 정보를 이용하여 제어 메시지의 오버 헤드를 줄여주기 위한 방법으로 Location-aided AODV+ (LAp) 프로토콜을 제시하고 성능을 AODV+ 프로토콜과 비교 평가하였다. LAp 프로토콜은 AODV+ 프로토콜을 효율적으로 노드의 위치 정보를 사용할 수 있도록 확장한 방법으로 경로 설정을 위한 충분한 수의 노드가 보장 될 때 AODV+ 더 좋은 성능을 보여준다.

• 한국항해학회지
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• 제19권1호
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• pp.49-69
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• 1995

What is the national competitive power\ulcorner What are the determinants of national competitive advantage\ulcorner In order to find these problems, this study was initiated theoretically through the international trade theory and international managerial strategic theory. The flow of studies, in connection with these competitive advantage, come into industries competitive advantage from national competitive advantage. It is understood that the flow of studies is based on the change of paradigm about the international industry environment. Today, the international industry environment has been changed into vigorous situation with the new trade system such as globalization, UR negotiation, WTO system instead of GATT. Among these environments, all enterprises in any industries should try to enhance their benefit, income profits and develop their management strategy, because it is essential for them to keep and make a profit in order to be competitive against all other rivaling enterprises. According to researchers and the ages of history, the concept and determinants of competitive advantage have been dissimiliar as followings. 1) Theory of absolute advantage : Absolute Product Cost. 2) Theory of comparative advantage : Comparative Product Cost. 3) Theory of reciprocal demand : the Reciprocal Demand Structure. 4) Theory of Hechsher-Ohlin : Factor Endowment. 5) Paradox of Leontief : the Quality of Factor Endowment. 6) Theory of technological gap : R & D. 7) Technological gap model : The Technological Gap. 8) Theory of the product life cycle : Product Life Cycle. 9) Christensen's study : Firm's character & manager's character. 10) Monopolistic Advantage Theories : Monopolistic Advantage 11) Electic theory : Ownership, location and internalization specific advantages. 12) Theory of value chain : Cost advantage, Differentiation, Focus. However all these theories have the limit of illustration regarding today's competitive situation, the Porter's theory shows well the determinants of competitive advantage with competitive strategy. Therefore, the analysis of the competitive advantage for maritime industry should be studied by the determinants of competitive advantage of nations

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2002년도 Proceedings of International Symposium on Remote Sensing
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• pp.163-167
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• 2002

Recently, owing to performance elevation of telecommunication technology, increase of wireless internet's subscriber and diffusion of wireless device, Interest about LBS (Location Based Service) which take advantage of user's location information and can receive information in concerning with user's location is increasing rapidly. So, MOMS (Moving Object Management System) that manage user's location information is required compulsorily to provide location base service. LBS of childhood such as service to find a friend need only current location, but to provide high-quality service in connection with Data Mining, CRM, We must be able to manage location information of past. In this paper, we design distributed manage system to insert and search Moving Object in a large amount. It has been consisted of CLIM (Current Location Information Manager), PLIM (Past-Location Information Manager) and BLIM (Distributed Location Information Manager). CLIM and PLIM prove performance of searching data by using spatiotemporal-index. DLIM distribute an enormous amount of location data to various database. Thus it keeps load-balance, regulates overload and manage a huge number of location information efficiently.

• 한국컴퓨터정보학회논문지
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• 제21권6호
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• pp.63-69
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• 2016

In this paper, we proposed the location tracking system based on MS-Based/Assisted(Mobile Station-Based and Assisted) location trigger service model with context-awareness for the intelligent location tracking of moving objects. It provides the proper resulting value that matches the context of users through the analysis about the situation of the user, physical environment, computing resource and the existing information on user input. In order to provide real-time data, we proposed the location tracking system which realizes the intelligent information such as the expecting arrival time and passing the specific area of the moving object by adopting the location trigger. So, it derives to minimize the costs of communication for the mobile object tracking applications. The proposed location tracking system based on context-awareness can be used for realtime monitoring, intelligent alarm/action, setting up of the optimized moving path, dynamic adjustment of strategies and policies. So it has the advantage to develop the application system which is aimed at optimization of the object tracking and movement.

• 제어로봇시스템학회논문지
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• 제12권10호
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• pp.996-1001
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• 2006

This paper proposes an ultrasonic location system based on the spread spectrum principle. Though there are several conventional ultrasonic systems, the proposed system is the first one that combines spread spectrum and amplitude modulation principles. The proposed ultrasonic location system is advantageous in that it can improve positioning accuracy and detection sensitivity by the spread spectrum principle, it simplifies transmitter and receiver circuits, and it is easy to upgrade its performance by modifying only the software functionalities. By several real data experiments, the advantage and performance of the proposed location system is demonstrated.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.897-899
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• 2003

Recently, owing to the rapid progress of Telecommunication technology, the increase of wireless internet’s subscriber and diffusion of wireless device, LBS (Location Based Services) which take advantage of user's location information and receive information in concerning with user’s location to be essential services. Location Based Services are related the moving objects which change their locations through time. Therefore, to provide location-based services efficiently, it is required that an efficient system which could acquire, store, and query the large number of locations. In this paper, we design management system to insert and search a huge number of Moving Object based on Legacy Relational Database.