• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.3
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• pp.543-551
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• 2015

As the use of internet and mobile devices became generalized, users utilizing search and recommendation in order to find the information they want in the midst of various websites have become common. In order to recommend more appropriate item for users, this paper proposes a recommendation technique that reflects the users' preference change following the flow of time by applying users' activity and time information. The proposed technique, after classifying the data in categories including the tag information that is considered at the time of choosing the items, only uses the data that users' preference change following the flow of time is reflected. For the users who prefer the corresponding category, the item that is extracted by applying tag information to collaboration filtering technique is recommended and for general users, items are recommended based on the ranking calculated by using the tag information. The proposed technique was experimented by using hetrec2011-movielens-2k data set. The experiment result indicated that the proposed technique has been more enhanced the accuracy, appropriacy, compared to item-based, user-based method.

• Journal of the Korean Society for information Management
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• v.34 no.1
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• pp.197-218
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• 2017

This study attempts to measure visibility and impact of university repositories in South Korea with the help of web-sites, OpenDOAR, ROAR and RWR. Further understanding the self-archiving status of South Korea, the analysis results were compared with the reputation and power of major Asian countries' university repositories. The results showed that only nine institutional repositories of the universities in South Korea were active. There was only one South Korean university repository in the RWR top 500. All the other repositories ranked in bottom level. However, among Asian countries, Japan and Taiwan have established many institutional repositories. They had 257 and 52 repositories respectively. Fortunately, some leading university repositories in South Korea began activating self-archiving with the help of linking their own research outputs management system. Also, the attempts by other South Korean university repositories expect a substantial quantitative growth in the near future.

• Proceedings of the Korea Contents Association Conference
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• 2009.05a
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• pp.273-276
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• 2009

The development of computer hardware equipments and computer graphics technique has taken lots of changes in a movie production of VFX (visual effects) part. Particularly, through the developing of various computers graphic techniques to create imaginary creatures in a movie as high resolution like a real, weight and percentage of creature's appearance in a film is increasingly higher than past year. Creatures play an important role in a various movies such as monster films 'D War' and 'The Host', as well as fantasy films 'Harry Potter', 'The Chronicles of Narnia' and "The Lord of the Rings". The fact that authorized movie sites and organizations rank monsters in diverse processes is to show it. Nevertheless significance and priority of creatures are increased day by day, there are rare to see a basic research about classification and materiality of creatures. In this study, it is organizing materiality of creatures and designing realistic and convincing creatures to help efficient visualization from now on.

• The Journal of the Korea Contents Association
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• v.18 no.10
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• pp.289-297
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• 2018

This study analyzed the Entrepreneurial Competencies of Science and Technology Personnel from the point of view of the industry's demanders. It is necessary to change institutional and policy support from quantitative support to improvement of qualitative level. Specifically, this study used the Borich's Needs Assessment Model to determine what capabilities are currently lacking and which should be supplemented. As a result of analysis, it showed that the current level was lower than expected level. Especially, expectation level was high in order of team working, problem solving ability, communication, abstract thinking, job knowledge, Autonomy, leadership, risk-taking, and commercialization are all lower than the overall average. In the analysis of educational need, the most important factor of entrepreneurial competence appeared in order of problem solving ability, teamworking, job related knowledge, abstract thinking, and communication. This means that it is necessary to logically solve the problems that are encountered in various situations in the organization by using cooperation between the teams and their own job knowledge. In addition, education should be conducted to effectively communicate the results to others.

• The Journal of the Korea Contents Association
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• v.20 no.9
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• pp.439-447
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• 2020

Public data refers to all data or information created by public institutions, and public information that leads to communication and cooperation among all people. Public data is an important method to lead the next generation of new industries such as artificial intelligence and smart cities, Korea is continuously ranked high in the international evaluation related to public data. However, despite the continuous efforts, the use of public data or industrial influence is insufficient. Quality issues are continuously discussed in the use of public data, but the criteria for quantitatively evaluating data are insufficient. This paper reviews indicators for public data quality evaluation and performs quantitative evaluation on selected public data. In particular, the quality of open standard data constructed and opened based on public data management guidelines is examined to determine whether government guidelines are appropriate. The data quality assessment includes the metadata and data values of open standard data, and is reviewed based on completeness and accuracy indicators. Based on the data analysis results, this paper proposes policy and technical measures for quality improvement.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.12B
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• pp.1017-1027
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• 2006

Recently, Internet service providers are offering triple play service which combines voice and video services with the existing high speed Internet service under the common network infrastructure of IP protocol, so that they can create more benefit from operating a single network architecture. In line with this movement in the convergence of network and services, in this work we propose a bandwidth dimensioning method for the subscriber network of the IP network at flow level. To that purpose, let us propose a series of bandwidth dimensioning methods: bandwidth for best effort service only, bandwidth dimensioning for premium services, and bandwidth dimensioning schemes for the premium Internet services as well as the best effort service which comprise the TPS. Our link dimensioning method is based on the flow level that incorporates the flow blocking probability as a measure of grade of services(GoS), and investigates the characteristics of the proposed methods via extensive numerical experiments. After that, let us carry out a simulation experiment concerning the delay and loss performance of the packet scheduling for the premium services (QoS) using the bandwidth designed by our proposed method, via which the packet level quality of service (QoS) for the proposed link dimensioning method can be observed.

• KIISE Transactions on Computing Practices
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• v.20 no.9
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• pp.498-506
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• 2014

With the development of smart transportation, people are likely to find their paths by using navigation and map application. However, the existing retrieval system cannot output the correct retrieval result due to the inaccurate query. In order to remedy this problem, set-based POI search algorithm was proposed. Subsequently, additionally a method for measuring POI name similarity and POI search algorithm supporting classifying duplicate characters were proposed. These algorithms tried to compensate the insufficient part of the compensate set-based POI search algorithm. In this paper, accuracy improvement methods for measuring string similarity in POI data retrieval system are proposed. By formulization, similarity measurement scheme is systematized and generalized with the development of transportation. As a result, it improves the accuracy of the retrieval result. From the experimental results, we can observe that our accuracy improvement methods show better performance than the previous algorithms.

• Proceedings of the Korea Water Resources Association Conference
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• 2008.05a
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• pp.1713-1716
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• 2008

최근 배출되는 미량유해물질로 1991년 페놀, 2004년 1,4-다이옥산, 2006년 퍼클로레이트 검출 등 빈번하게 원수수질 오염사고가 발생하고 새로운 미량유해 화학물질의 배출이 우려됨에 따라, 일부 시민단체, 시의회, 언론 등에서 깨끗하고 안전한 상수원수 확보를 위한 근본적인 대책을 요구하는 목소리가 커지고 있다. 이에 대한 대책의 일환으로 취수원 이전에 대한 타당성 등이 검토되고 있다. 이러한 요구를 바탕으로 본 연구에서는 K-WEAP 모형을 이용하여 낙동강수계 물수지 분석을 실시하였다. 관련된 기존자료를 이용하여 용수수요량을 산정하였으며, 갈수량시 물수지 분석을 실시하였다. 연구에 사용된 K-WEAP 모형은 SEI-B(Srockholm Environment Institute, Boston Center)에서 개발된 WEAP에 기반을 두고 우리나라에 특성에 맞게 모의형태를 개선하고 한글화한 모형으로 분석대상 지역으로서 도시지역과 농업지역, 단일 소유역이나 복잡한 하천유역의 물 수요-공급 시스템에 적용할 수 있다. 또한 K-WEAP 모형은 용수목적별 수요량 분석, 물 절약, 수리권과 배분 우선순위, 지하수와 하천유량 모의, 저수지 운영, 수력발전, 오염물질 추적, 생태계 필요수량 분석과 같은 광범위한 부문의 문제들까지 다룰 수 있다. 본 연구에서 물수지 분석에 사용된 대상구간은 낙동지점에서 고령교지점까지 약 120km이며, 낙동강에 유입되는 지류로는 감천과 금호강을 대상에 포함하였다. 대상구간에 대해서는 3가지의 시나리오를 바탕으로 모의를 진행하였다. 선정된 3가지 시나리오는 현재의 대구 인근지역의 취수와 방류를 고려하는 상태와 현실가능성이 있는 2가지의 대안에 대해서 분석을 실시해 보았다. 대안들은 각각의 대구 취수시설을 구미 상류로 이전하여 취수하는 상황과 구미지역 및 칠곡지역의 방류구 시설을 하류로 이전하여 방류하는 상황으로 가정하여 분석을 실시하였다. 분석결과 현재 상태의 시나리오에서만 갈수기시 만족할 만한 결과를 보여주었고 나머지 2가지의 시나리오에서는 유량이 부족함을 나타났다. 현재의 상태를 모의한 시나리오를 제외한 시나리오의 분석에서는 갈수기 시에 물 부족을 겪게 된다. 이는 낙동강 상류에서 추가방류가 없으면 해결되지 못하는 상황으로 다른 대안들(신규 댐 방류 등)에 대한 추가적인 시나리오 분석이 필요할 것으로 판단된다.

• Food Industry
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• s.179
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• pp.10-73
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• 2004

우리나라의 식품산업은 2002년도에 약 36조3천8백억원의 매출을 기록하여, 국내총생산(GDP)의 $5.9\%$를 차지하고 있으며, 제조업 총생산액의 $20.3\%$를 차지하여 국내제조업의 견인차로 평가받고 있다. 또한 제조업별 부가가치 순위는 전자, 화학, 자동차산업에 이어 4위를 점하고 있으며, 고용유발계수도 평균이상을 유지하고 있다. 이와 함께 식품산업은 모든 소비재 중 생존을 위해 없어서는 안된다는 점에서 특별한 위치를 점하고 있다. 하지만 우리의 식품산업은 약 18,000업소가 생산활동에 참여하고 있으나 종업원 10인 이하 사업장이 $78.1\%$를 차지하며, 상위 47개 사업장이 식품산업 총 매출액의 $52\%$를 점유하고 있는 영세구조로 이루어져 있다. 행정측면에서 보면 그간 안전성 확보를 위한 규제중심의 행정에 치우쳐 산업진흥을 위한 특별한 지원이 매우 부족한 실정이다. 그러나 이와 같은 식품산업의 구조적 영세성은 식품산업이 갖는 경제적 측면 이외에 특별한 위치 즉, 국민보건분야에 있어서의 중대성과 함께 산업으로서의 발전을 위한 국가차원의 전략적 지원이 필요한 분야이다. 이와 함께 식품산업은 BT분야에 있어 적용가능성이 높고, 성공확률이 높아 국가의 지원이 우선적으로 배려되어야 한다. 이를 위하여 본 장에서는 식품산업의 생산$\cdot$수출입현황, 식품산업의 경제적 위치를 분석하여 중요성을 부각하였다. 국내외 식품산업지원정책의 파악을 위하여 식품안전관련 법령의 소개와 산업지원을 위한 산자부 등 관련부처의 지원정책을 제시하였으며 미국, 유럽, 일본 등 주요국가의 바이오 기능식품을 중심으로 한 정부의 BT 지원정책을 소개하였다. 이와함께 우리나라의 식품산업의 연구개발 동향을 분석하고, 미국, 유럽, 일본의 식품산업의 중점 연구개발동향을 소개하였다. 상기의 식품산업분석, 지원정책, 외국의 BT지원 사례 등을 참조하여 우리 식품산업의 환경분석과 문제점을 제시하였으며 전망을 분석하였다. 식품산업 정책의 개선방향으로서 제도의 개선, 위해평가 수행체계의 도입, 식품유통의 효율화 기반조성 및 지원, 산업지원을 위한 추진정책, BT산업으로서 식품산업의 진흥책 강구 등의 전략을 제시하였다.

• The Journal of Society for e-Business Studies
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• v.12 no.4
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• pp.1-15
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• 2007

Traceability links are logical links between individual requirements and other system elements such as architecture descriptions, source code, and test cases. These are useful for requirements change impact analysis, requirements conflict analysis, and requirements consistency checking. However, establishing and maintaining traceability links places a big burden since complex systems have especially yield an enormous number of various artifacts. We propose a feature-oriented requirements tracing method to manage requirements with cost benefit analysis, including value consideration and intermediate catalysis using features. Our approach offers two contributions to the study of requirements tracing: (1)We introduce feature modeling as intermediate catalysis to generate traceability links between user requirements and implementation artifacts. (2)We provide value consideration with cost and efforts to identify traceability links based on prioritized requirements, thus assigning a granularity level to each feature. In this paper, we especially present the results of a case study which is carried out in Apartment Ubiquitous Platform to integrate and connect home services in an apartment complex in details.