• Journal of Information Technology Applications and Management
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• 제15권2호
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• pp.51-65
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• 2008

The purpose of this paper is introducing WiFi based EKF(Extended Kalman Filter) method for indoor positioning. The advantages of our EKF method include: 1) Any special equipment dedicated for positioning is not required. 2) implementation of EKF does not require off-line phase of fingerprinting methods. 3) The EKF effectively minimizes squared deviation of the trilateration method. In order to experimentally prove the advantages of our method, we implemented indoor positioning systems making use of the K-NN(K Nearest Neighbors), Bayesian, decision tree, trilateration, and our EKF methods. Our experimental results show that the average-errors of K-NN, Bayesian and decision tree methods are all close to 2.4 meters whereas the average errors of trilateration and EKF are 4.07 meters and 3.528 meters, respectively. That is, the accuracy of our EKF is a bit inferior to those of fingerprinting methods. Even so, our EKF is accurate enough to be used for practical indoor LBS systems. Moreover, our EKF is easier to implement than fingerprinting methods because it does not require off-line phase.

• 한국조리학회지
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• 제13권2호
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• pp.275-291
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• 2007

The growth of foodservice industry has caused keen competition in the family restaurant industry. For a differentiation strategy to be competitive, on the preferential basis, it is necessary for each family restaurant business to analyze its position in the market. Therefore, this study is to certify customers' perceived servicescape and image similarity and analyzes positioning of seven family restaurants. For this research, multidimensional scaling(MDS) is performed to determine how they are positioned relative to competitors. According to the result of the positioning map(ALSCAL and PROFIT map), it is found that Outback steakhouse, T.G.I. Friday's, Bennigans' have more strong competitiveness than VIPS, Marche and Sizzler in servicescape factors and restaurant selection attribute except menu diversity. But the preference order does not follow the order of competitiveness. This result from the positioning map means that each business needs various marketing strategies that cannot be copied easily.

• Journal of Positioning, Navigation, and Timing
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• 제4권4호
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• pp.161-171
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• 2015

Alternative binary offset carrier (AltBOC) signals can be approximated by four synchronized direct sequence spread spectrum (DSSS) signals, each pair of which is a quadrature phase shift keyed (QPSK) signal at a different frequency. Therefore, depending on the strength of an incoming AltBOC signal, an acquisition technique can reduce the mean acquisition time (MAT) by searching the four DSSS signals asynchronously; the search for each of the four DSSS signals can start at one of the evenly separated hypotheses on the two-dimensional hypothesis space. And detection sensitivity can be improved by multiple levels when different numbers of search results for the same hypothesis are combined. In this paper, we propose a fast AltBOC acquisition technique that has an asynchronous search strategy and efficiently utilizes the output of the four search results to increase the sensitivity level when sensitivity improvement is needed. We provide a complete theoretical analysis and demonstrate with numerous Monte Carlo simulations that the MAT of the proposed technique is much smaller than conventional AltBOC acquisition techniques.

• 한국병원경영학회지
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• 제22권3호
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• pp.105-117
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• 2017

This study was performed to provide medical service providers with useful information for their market competitiveness and decision making. It is regarding positioning map and repositioning map strategy to enforce market competitiveness through bench marking of a specific hospital which has been relatively underestimated in the market. With AHP and biplot analyses for this study, we could identify priority of properties that medical service consumers consider when they choose a university hospital and market competitiveness of alternative university hospitals. It is expected that the study of repositioning strategy to Strengthening Market Competitiveness will provide efficient problem solving method to allocation restricted resources by repositioning the specific university hospital through benchmarking with evaluation factors of the most market competitiveness university hospital. When Inje University Paik Hospital was benchmarked and repositioned, the share of Paik hospital increased and there was only 3.1% difference from Dongah Dong-A University Hospital, which occupied the first place in market competitiveness. Such the results of this study may suggestion management strategies to provide efficient problem solving methods when companies responding to rapidly changing management environments allocation restricted resources.

• 경영과정보연구
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• 제15권
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• pp.51-69
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• 2004

Local universities are faced with rapid environmental changes in 2000's. Therefore local universities are required to research for more specialized marketing strategy such as positioning strategy. The objectives of this study are to examine what are the most important university images and image position of 7 universities'. In order to this study, 276 questionnaires collected from university in Busan area are analyzed by t-test, anova. The results of this study are summarized as follows (1) the most important university images are ranked in the order 1) prospect of getting employment(4.78), 2) possibility of development (4.35), 3) confidence(4.31), 4) research ability(3.97). It is true that practical images get high grade, traditional image such as research ability remains yet as a very import image. (2) Except (A, F) & (B, E) university, common position is not found among the 7 universities, therefore each university cultivate important image as G university dose. (3) Private university are underestimated by student of national university. There is a necessity for cultivating and promoting private university images. (4) Students of private university, particularly students of F university, overestimated their university images seriously.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2002년도 학술대회지
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• pp.549-554
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• 2002

최근 주택보급률의 증가와 소비자의 다양화된 수요변화는 주택시장을 공급자 위주에서 소비자 위주로 변화시키고 있다. 이러한 주택시장의 환경변화로 인하여 건설업체의 경영 관리의 방향도 생산 중심에서 마케팅 중심으로, 그리고 차별화된 상품 개발 중심으로 이전되고 있다. 그러나 지금까지의 연구는 주택의 주거와 근린특성에 초점을 둔 고객의 요구사항분석에 한정되어 있을 뿐 주택시장의 시장세분화를 통한 아파트 마케팅 전략의 연구는 미비한 실정인 상황이다. 따라서 본 연구는 소비자의 속성을 이용한 아파트 시장세분화 방안을 마련하고, 세분시장별 특성에 맞는 아파트 포지셔닝 전략에 대한 이론적 기반을 마련하였다. 즉 (1) 아파트 시장세분화와 포지셔닝을 위한 일반적인 방법론과 적용 가능한 아파트 속성변수를 분석하고 (2) 세분시장별 특성에 맞는 마케팅전략차원의 제품 포지셔닝 대안을 제시하였다. 이 두 가지 개념적 틀을 제시함으로써, 향후 아파트건설업체들이 자사의 인지도 및 상품차별화 강화를 위해 활용 가능한 효율적인 마케팅전략의 의사결정 방안을 제시하였다.

• 디자인학연구
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• 제15권2호
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• pp.101-114
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• 2002

On the threshold of year 2000, the elderly account for more than 7% of the whole population in Korea, which means that the nation is greeting welcoming an aging society. Accordingly, it is expected that silver businesses and services targeted at the silver generation will prosper with "silver advertising design" becoming active. Under such circumstances, this study was aimed at reviewing the recent silver marketing advertisements in terms of their cultural and moral implications, and thereby, redefining and reestablishing the status of silver consumers to help them find their identity, aware of marketing activities and therewith, establish their "consumer sovereignty". This study consists in large of 5 chapters. The introduction parr describes background, purpose, method and scope of the study. The first chapter reviews the silver marketing theories. The second chapter classifies the silver marketing advertisement positioning of four style - upper classes style, effloresce progress style, self- sufficiency style, dependent style - and reviews the expression strategy of each positioning. The third chapter examines the domestic conditions of silver marketing advertisements for each positioning type classified. The fourth chapter designs the ′creative′of silver marketing advertisements and suggests the methods thereof. The analysis of ′creative′was tested in terms of graphic gestaltung, and how the sliver marketing advertisement positioning should be discerned depending on silver generation consumer′s characteristics was discussed. The fifth chapter puts forwards the suggestions for the ′creative′ strategies to enhance the effects of the silver marketing advertisements, based on the preceding discussions. In addition, the Perspective into the keyword of 21 st century or "silver design" is discussed, together with the limitations of this study. It is hoped that this stuffy will be conducive to our efforts to face the upcoming′age\ulcorner society′more effectively. To this end, this study discusses the "silver advertising design" in light of ′societal concepts′and ′customer-oriented value′, and thus, explores some creative presentation strategies whereby individual companies interests and social or public interests can be compromised through ′creative activities′ and ′equal-value consumerism′ for an ultimately effective management strategies for silver businesses and services.

• 만화애니메이션 연구
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• 통권11호
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• pp.55-72
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• 2007

한국 애니메이션 산업에게 있어 중국시장 진출은 필수적 과제이다. 그러나, 중국 정부의 강력한 수입 애니메이션 규제정책은 한국 애니메이션 완성작의 수출은 물론, 한국에서 기획된 작품에 중국으로부터 투자를 유치하는 형태의 한중 공동제작마저도 어렵게 만들었다. 이제껏 거대 중국시장과 투자자금 유입을 기대하면서 한국기업들이 추진해온 방식의 중국진출 전략은 더 이상 유효하지 않으며, 자금까지와는 다른 새로운 접근법이 필요한 시점이다. $5{\sim}10$년 내에 세계적인 애니메이션 대국을 지향하는 중국정부의 정책분석을 통해 높은 중국시장 진입장벽을 확인하였고, 중국 정부와 애니메이션 산업을 중국시장의 '우선 고객'으로 간주하여 이들 고객의 니즈(Needs)를 파악한 결과, 이제는 한국 애니메이션 프로젝트가 아니라 '한국 애니메이션 산업'을 소구(Appeal)하는 것이 필요하며, 중국 정부와 산업의 니즈(Needs)를 만족시킬 수 있는 한국 애니메이션 산업의 전략적 포지셔닝(Positioning)만이 현 상황을 타개해 나갈 수 있을 것이라는 결론을 도출하였다. 전략적 포지셔닝 확립은 적절한 실행방안을 통해서만 실현가능한 것인 바, 실현방안으로서 바람직한 형태의 중국과의 공동제작 방법론을 제시하였다. 문제는, 본고에서 제시되고 있는 중국시장 진출 방안도 현재 중국 애니메이션 산업의 발전 속도로 볼 때, 그 유효 기간이 몇 년 남지 않았다는 사실이다. 이에 대한 한국 애니메이션 산업의 인식전환과 신속한 대응이 필요하며, 그를 위한 정부의 지원정책도 절실한 시점이다.

• 한국정보시스템학회:학술대회논문집
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• 한국정보시스템학회 1996년도 추계학술발표회 발표논문집
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• pp.199-204
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• 1996

It is discussed how to determine the home location of idle vehicles in an AGVS with a loop guide path in a way of maximizing the request-call response probabilities for all demand. Optimal home position is selected by solving the simultaneous equations easily. Static positioning strategy is analyzed in which a single home position is allocated to which every vehicle is routed whenever it becomes idle. The cases of unidirectional guidepath is considered only. We provide a numerical example to illustrate the search algorithm developed for the case and compare the searched optimal solutions with the others.

• Journal of Advanced Research in Ocean Engineering
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• 제1권2호
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• pp.94-105
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• 2015

In this study, a thruster allocation method of a deep-sea working vessel was proposed with the aims of producing the demanded generalized forces and moment for dynamic positioning while at the same time minimizing total power. For this, an optimization problem for thrust allocation was mathematically formulated with design variables, objective function, and constraints. The genetic algorithms (GA) was used to solve the formulated problem. The proposed method was applied to an example of finding optimal thrust allocation of the deep-sea working vessel having 5 thrusters. The result showed that the method could be used to determine better strategy for thruster allocation of the vessel as compared to existing study.