• 한국정보과학회:학술대회논문집
• /
• 한국정보과학회 2004년도 가을 학술발표논문집 Vol.31 No.2 (1)
• /
• pp.106-108
• /
• 2004

링크 구조를 이용하는 대표적인 알고리즘인 HITS는 링크 정보를 이용하여 Authority와 Hub rating을 구하는 알고리즘이다. 그러나 HITS에서는 중요도와는 관계없이 단순히 링크만을 많이 갖는 page의 Authority와 Hub rating이 비정상적으로 높게 계산되는 문제점이 있어 이를 해결하기 위한 연구들이 있었다. 본 논문에서는 이러한 연구들의 결과를 개선시키기 위해 Authority와 Hub rating의 단순한 합이 아닌, 평균과 priority를 적용하였다. 정확도를 측정하는 실험을 통해 제안하는 알고리즘이 기존의 방법보다 우수한 성능을 나타냄을 알 수 있다.

• 한국정보처리학회:학술대회논문집
• /
• 한국정보처리학회 2007년도 추계학술발표대회
• /
• pp.274-277
• /
• 2007

기업의 원활한 활동에 필수적인 요소는 살아 있는 정보의 공급이며, 기업 데이터 베이스는 데이터의 보관/흐름/활용 입장에서의 정보 인프라를 기반으로 하고 있다. 최근 기업 Knowledge Base 구축은 정보의 품질이 좌우하나 기업 정보의 양은 비대해져 데이터의 일관성이 결여되고 DB 의 성능은 점점 저하되고 있다. 본 고에서는 데이터 Hub 의 적용을 통해 얻을 수 있는 DB 성능 향상에 대해 정성적/정량적 관점으로 논의한다.

• 소성∙가공
• /
• 제21권7호
• /
• pp.453-458
• /
• 2012

The flange hub is a main component of an automotive steering system. Dimensional precision of the flange hub is very important for precise control of the steering force. Consequently, the process design for precision forming of a flange hub is required. The teeth of the flange hub are generally formed by bending. In this study, the formability of flange bending was investigated using FE simulations. For the optimum process conditions, the flange is bent by movement of an insert die, and the die angle and bending length are selected as $90^{\circ}$ and 4mm respectively.

• 한국항만경제학회지
• /
• 제20권1호
• /
• pp.21-42
• /
• 2004

This paper addresses the operation, problems, and development policy of Gwangyang Port, Korea. This paper aims to analyze the operation condition and problems of Gwangyang Port and suggest long-term policies for developing Gwangyang Port as a logistic hub in northeast period. It is made up of three main sections: the operation, problems, and forecast of freight volumes; analysis of operational results of Gwangyang Port; development strategies of Gwangyang Port as a Logistics Hub. This paper was mainly based on a review of current papers/reports, an analysis of secondary data, and questionnaire survey. The major development strategies identified consisted of expansion regular service sea-route, formation of inter-modal transportation system, strengthening of port sales for Gwangyang port's recognition, securing operation-profits by fixed cargo volume, and promotion of free tread zone.

• 한국정밀공학회지
• /
• 제19권6호
• /
• pp.86-95
• /
• 2002

This paper suggests the new technology to control metal flow in order to reduce the number of preforming and the machining for the cold forged product with complex geometry. This technology is the combined forming that consists of bulk and sheet forming with double action dies. To analyze the process, finite element simulation has been performed. The proposed technology is applied to hub model that is part of air conditioner clutch. The purpose of this study is to investigate the material now of hub through the relative-velocity control of punch and mandrel using the flow control forming technique.

• 한국경영과학회:학술대회논문집
• /
• 한국경영과학회/대한산업공학회 2005년도 춘계공동학술대회 발표논문
• /
• pp.59-71
• /
• 2005

In this paper we address a design problem for hub and spoke transportation networks and then consider a capacitated hub locations problem with direct shipment (CHLPwD). We determine the location of hubs, the allocation of nodes to hubs, and direct shipment paths in the network, with the objective of minimizing the total cost in the network. An evolutionary algorithm is developed here to solve the CHLPwD. To do this, we propose the representation and the genetic operators suitable for the problem and adopt a heuristic method for the allocation of nodes to hubs. To enhance the search capability, problem-specific information is used in our evolutionary algorithm. The proposed algorithm is compared with the heuristic method in terms of solution quality and computation time. The experimental results show that our algorithm can provide better solutions than the heuristic.

• 한국전자거래학회지
• /
• 제8권1호
• /
• pp.141-154
• /
• 2003

SOAP is a protocol used for information exchange in distributed computing environment and SOAP defines mechanisms for message transferring between distributed system and remote procedure call/response process. This SOAP is able to be used independently on hardware platforms and operating systems and program languages because it uses only a text-based XML for protocol. Therefore ebXML that is a standard for E-Commerce adopts SOAP for message exchange. In this paper, we implement XML Hub System using SOAP and apply on the system e-Procurement. By this XML Hub System we can more easily exchange messages for B2B. Accordingly we can manage and integrate a lots of business partners.

• 한국소음진동공학회논문집
• /
• 제14권12호
• /
• pp.1287-1294
• /
• 2004

Hub bearings not only sustain the body of a cat, but permit wheels to rotate freely. Excessive radial or axial load and many other reasons can cause defects to be created and grown in each component. Therefore, nitration and noise from unwanted defects in outer-race, inner-race or ball elements of a Hub bearing are what we want to detect as early as possible. How early we can detect the faults has to do with how the detection algorithm finds the fault information from measured signal. Fortunately, the bearing signal has Periodic impulse train. This information allows us to find the faults regardless how much noise contaminates the signal. This paper shows the basic signal processing idea and experimental results that demonstrate how good the method is.

• 한국항해항만학회지
• /
• 제28권9호
• /
• pp.783-790
• /
• 2004

For a nearly decade Busan has been the pre-dominant force in Northeast Asian port community, but during the last couple of years, several competitors have looked to directly challenge Busan's regional dominance, most notably, northern Chinese ports. Faced with this challenging and formidable trend, Busan has had to respond appropriately to ensure that Busan remains a regional hub well into the 21st century. The aim of this paper is to make some considerations for a regional hub container port in Northeast Asia in response to changes in the shipping industry with particular reference to Korea.

• 한국복합재료학회:학술대회논문집
• /
• 한국복합재료학회 2003년도 추계학술발표대회 논문집
• /
• pp.119-122
• /
• 2003

This report describes the procedure of detailed design and structural test for the composite flexure which is a part of the hingeless hub system. First, stacking sequence design for composite flexure was done, and structural analysis by using NASTRAN was made to verify structural stability and safety. Using FPS installed at KIMM, composite flexure was laid up and cured using a autoclave. Before rotor ground test, the basic structural tests such as a bench test, tensile strength test and shear strength test, for flexure, were accomplished. Through replacing existing metal hub part with new fabricated composite flexure, improvement of aeroelastic stability and weight reduction were achieved. This result will be applied to composite rotor system design fur helicopter.