• 한국컴퓨터정보학회논문지
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• 제21권4호
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• pp.63-71
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• 2016

This paper is about applying efficient data mining method which improves the score calculation and proper building performance of credit ranking score system. The main idea of this data mining technique is accomplishing such objectives by applying Correlation based Feature Selection which could also be used to verify the properness of existing rank scores quickly. This study selected 2047 manufacturing companies on KOSPI market during the period of 2009 to 2013, which have their own credit rank scores given by NICE information service agency. Regarding the relevant financial variables, total 80 variables were collected from KIS-Value and DART (Data Analysis, Retrieval and Transfer System). If correlation based feature selection could select more important variables, then required information and cost would be reduced significantly. Through analysis, this study show that the proposed correlation based feature selection method improves selection and classification process of credit rank system so that the accuracy and credibility would be increased while the cost for building system would be decreased.

• 한국게임학회 논문지
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• 제20권4호
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• pp.11-20
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• 2020

모바일 시장에서는 앱을 빠르게 개발하여 시장의 평가를 받는 것이 중요하다. 하지만 소규모 회사에서 단편화된 모바일 환경에 대응하여 제품을 신속하게 개발하고 배포하는 것은 어려운 일이다. 본 연구에서는 높은 수준의 기능과 성능을 요구하는 모바일 앱 개발 시에 크로스 플랫폼 솔루션인 React Native와 Unity3D를 동시에 활용하여 제작한 통합 개발 결과물이 요구 조건을 충족할 수 있음을 보인다. 또한 크로스 플랫폼을 통합한 개발 방식이 모바일 앱의 개발기간을 단축하고 개발 비용을 절감할 수 있음도 보여준다.

• 무역상무연구
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• 제72권
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• pp.161-183
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• 2016

This study looked at the Korea enterprise in China market practices and strategies in accordance with the Korea China FTA macroscopically. And the systematic localization in the mid-to long-term decisions necessary for successful, it is important to the local economy by contributing to strategic social contribution activities also ensure the reliability of consumers. In addition to factors that may enjoy various benefits from an Korea China FTA strategy it is also needed to maximize the additional benefits of the FTA signed by Korea before. In particular, this strategy requires that the biggest benefits of FTA, that determine the tariff cuts by FTA partners to take advantage of it. In addition, the strategy that should be taken in advance to prevent any unnecessary risks through the recent rapid and thorough understanding of the appropriate response, Chinese, Chinese culture on O2O retail market. It is considered that the Korea China FTA requires multidimensional efforts with seeking a comprehensive and affordable countermeasures in order to act as an important factor for Korea market companies, government, companies and academia at the same time. In particular, the idea to carefully look at the various features with the Chinese consumer market will be a very important point.

• 복식문화연구
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• 제15권4호
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• pp.593-603
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• 2007

The purpose of this study is to study the Central Asian costumes($1{\sim}7C$) and develop new design items and suggest new brand launching. Korean apparel industry has been suffering from imbalance of supply and demand caused by the sagging economy and too many apparel companies. Due to the several years of recession, clothing consumption decreased and foreign brand's market share got bigger. As a result, managing a company became difficult and it is time for Korean apparel industry to enter the global market. We need a brand with new image and design that has big potential of purchasing power not only in Korea but also in China, and furthermore in global market. But even nearby Chinese market already became very competitive. One way of approaching Chinese fashion market is to find something special, for example, their historical background. Central Asian culture and costumes, a part of China, has both Eastern and Western culture. No other apparel industry had interest in the Central Asian costumes yet. Therefore, through their costume, a fresh design idea can be suggested.

• Journal of Communications and Networks
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• 제11권4호
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• pp.359-367
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• 2009

Trust-based solutions provide some form of payment to peers to encourage good behavior. The problem with trust management systems is that they require prior knowledge to work. In other words, peers are vulnerable to attack if they do not have knowledge or correct knowledge of other peers in a trust management system. Therefore, considering only trust is inadequate when a decision is made to identify the best set of peers to utilize. In order to solve the problem, we propose a distributed decision-making mechanism for wireless peer-to-peer (P2P) networks based on game theory and relevant trust mechanisms in which we incorporate the element of trust and risk into a single model. The main idea of our mechanism is to use utility function to express the relationship between benefits and costs of peers, and then make the decision based on expected utility as well as risk attitude in a fully distributed fashion. The unique feature of our mechanism is that it not only helps a peer to select its partners, but also mitigates vulnerabilities in trust-based mechanisms. Through analysis and experiments, we believe our approach is useful for peers to make the decision regarding who to interact with. In addition, it is also a good starting point for exploring tradeoffs among risk, trust and utility.

• 산업경영시스템학회지
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• 제37권1호
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• pp.68-78
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• 2014

Recently, companies are trying to gain a competitive advantage in the market to meet the voice of customer. For this purpose, QFD has been used as product development technology in many areas to include the customer' requirements. Also, Kano model has been used to understand the customer' requirements for an effective way. Therefore integration of Kano model and QFD can more efficiently reflect the customer' requirements when designing a new service. This paper proposes PI index by taking into account the current satisfaction position of our company and competitors while IR (Improvement Ratio) value was set uniformity. This study suggests a more accurate index to predict potential improvements and calculates the final importance or priority. Through case studies targeted at elevator maintenance companies, we can have a general idea how much to improve in the near future and estimate the final importance of customer requirements.

• 한국실내디자인학회논문집
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• 제16권6호
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• pp.144-151
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• 2007

The idea of shopping is changed from a purchase of merchandise to an experience of pleasure. This study is a space composition analysis for the introduction of theme in multi-plex shopping center design to reflect variable consumer trend and company marketing strategy, The study progressed through theoretical consideration and substance analysis about the shopping centers which had been designed by Jerd Partnership In Japan since 2000. The following is result. The path is a sole main street that is made of curve form, parallel and vertical circulating rout and movement of human being. It leads continuity. The node and landmarks have a circular court with typifier as powerful center, character of transition space and event for experience. It makes locational quality. The districts are composed of retail shops, restaurants and culture facilities and the edge is represented by closed vertical wall and parapet. It induces a domain. The characteristic of Jerde shopping center is an experience of theme environment through the path as betweenness with a story based on a main theme. It is mostly related nature or exotic element and is obviously represented at path and node. The node takes a round shape and bring about event as a court. The application of theme to the shopping center by Jerde has a significant meaning for place marketing.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2007년도 추계학술발표대회 논문집
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• pp.103-106
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• 2007

The idea of shopping is changed from a purchase of merchandise to an experience of pleasure. This study is a space composition analysis for the introduction of theme in multi-plex shopping center design to reflect variable consumer trend and company marketing strategy. The study progressed through theoretical consideration and substance analysis about the shopping centers which had been designed by Jerd Partnership from 2000 in Japan. The following is result. The path is a sole main street that is made of curve form, parallel and vertical circulating rout and movement of human being. It leads continuity. The node and landmarks have a circular court with typifier as powerful center, character of transition space and event for experience. It makes locational quality. The districts are composed of retail shops, restaurants and culture facilities and the edge is represented by closed vertical wall and parapet. It induces a domain. The characteristic of Jerde shopping center is an experience of theme environment through the path as betweenness space with a story based on a main theme.

• Industrial Engineering and Management Systems
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• 제12권2호
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• pp.74-84
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• 2013

Modern companies have been facing devastating impacts from unexpected events such as demand uncertainties, natural disasters, and terrorist attacks due to the increasing global supply chain complexity. This paper proposes a multi stage logistic network model under disruption risk. To formulate the problem practically, we consider the effect of continuity rate, which is defined as a percentage of ability of the facility to provide backup allocation to customers in the abnormal situation and affect the investments and operational costs. Then we vary the fixed charge for opening facilities and the operational cost according to the continuity rate. The operational level of the company decreases below the normal condition when disruption occurs. The backup source after the disrup-tion is recovered not only as soon as possible, but also as much as possible. This is a concept of the business continuity plan to reduce the recovery time objective such a continuity rate will affect the investments and op-erational costs. Through numerical experiments, we have shown the proposed idea is capable of designing a resilient logistic network available for business continuity management/plan.

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2003년도 Proceeding
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• pp.141-148
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• 2003

Customer retention is a common concern for many industries and a critical issue for the survival in today's greatly compressed marketplace. Current customer retention models only focus on detection of potential defectors based on the likelihood of defection by using demographic and customer profile information. In this paper, we propose a dynamic procedure for defection detection and prevention using past and current customer behavior by utilizing SOM and Markov chain. The basic idea originates from the observation that a customer has a tendency to change his behavior (i.e. trim-out his usage volumes) before his eventual withdrawal. This gradual pulling out process offers the company the opportunity to detect the defection signals. With this approach, we have two significant benefits compared with existing defection detection studies. First, our procedure can predict when the potential defectors could withdraw and this feature helps to give marketing managers ample lead-time for preparing defection prevention plans. The second benefit is that our approach can provide a procedure for not only defection detection but also defection prevention, which could suggest the desirable behavior state for the next period so as to lower the likelihood of defection. We applied our dynamic procedure for defection detection and prevention to the online gaming industry. Our suggested procedure could predict potential defectors without deterioration of prediction accuracy compared to that of the MLP neural network and DT.