• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 2001년도 International Conference CALS/EC KOREA
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• pp.277-288
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• 2001

Nowadays, for the competitive power of an enterprise, there are many attempts to implement information system that could support business innovation by business process re-engineering. However, there is no effort to standardize the core business processes of enterprise based on standards of data, documents. These facts make it difficult to introduce and implement enterprise information system designed by business processes of the higher level. Therefore, standardization of business process by analyzing the functionality and relationships among them are important and necessary. The results of our research are summarized as process-driven standardization (standardization of core business processes) and development of a repository. In process-driven standardization, we proposed the reference model by analyzing the business processes of the leading enterprises for core business processes. The reference model focuses on core business processes, such as sales management, procurement management, production management, logistics management, and customer support in manufacturing industry. We developed a knowledge-based system as a repository for a integrated management system of business process. And this repository was built up web-based system for the purpose of both reference and management.

• Genomics & Informatics
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• 제13권3호
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• pp.86-89
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• 2015

Because there are clear molecular differences entailing different treatment effectiveness between Korean and non-Korean cancer patients, identifying distinct molecular characteristics of Korean cancers is profoundly important. Here, we report a web-based data repository, namely Korean Cancer Genome Database (KCGD), for searching gene signatures associated with Korean cancer patients. Currently, a total of 1,403 cancer genomics data were collected, processed and stored in our repository, an ever-growing database. We incorporated most widely used statistical survival analysis methods including the Cox proportional hazard model, log-rank test and Kaplan-Meier plot to provide instant significance estimation for searched molecules. As an initial repository with the aim of Korean-specific marker detection, KCGD would be a promising web application for users without bioinformatics expertise to identify significant factors associated with cancer in Korean.

• 한국컴퓨터정보학회논문지
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• 제15권12호
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• pp.151-162
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• 2010

유비쿼터스 컴퓨팅 환경을 구축하기 위하여 자동 식별, 센서 네트워크, 홈 네트워크 등의 다양한 분야에 대한 연구가 진행되고 있다. EPCIS(EPC Information Services)는 RFID 용용 시스템 개발에 필요한 태그 정보를 관리하는 저장소와 관련하여 EPCglobal에서 제안된 표준이다. 본 논문에서는 일반적인 객체 인식과 환경 정보 변화에 의존하는 객체 검색을 가능하게 하기위해 EPCIS 저장소를 설계하고 개발 및 구현한다. 또한 위치를 기반으로 하고 지속적으로 변하는 대용량 자료라는 면에서 RFID 자료와 유사한 센서 데이터를 통합처리 관리하여 USN(Ubiquitous Sensor Network) 환경 변화에 따른 객체 인식 등의 융합 처리가 가능하도록 설계한다.

• 한국에너지공학회:학술대회논문집
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• 한국에너지공학회 2004년도 춘계 학술발표회 논문집
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• pp.395-400
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• 2004

국내 차세대 원전인 APR 1400 원전의 원자로 냉각 계통(Reactor Coolant System)을 대상으로 하여 표준 데이터 모델 기반의 데이터 저장소를 구축하였다. 또한 구축한 데이터 저장소를 기반으로 웹을 통해 해당 계통 및 계통에 포함되어 있는 장비의 속성정보를 검색할 수 있으며, 마이크로스테이션이라는 설계 틀에서 2차원 도면인 P&ID와 해당 P&ID와 연관된 3차원 CAD를 연계시킴으로써 P&ID를 바탕으로 건설한 원전 플랜트를 3차원 CAD 모델을 통하여 해당 계통의 실제 레이아웃(Layout)을 확인할 수 있도록 하는 프로토타입 시스템을 개발하였다.

• 방사성폐기물학회지
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• 제19권1호
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• pp.75-85
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• 2021

Evaluating the quantitative damage to rocks through acoustic emission (AE) has become a research focus. Most studies mainly used one or two AE parameters to evaluate the degree of damage, but several AE parameters have been rarely used. In this study, several data-driven models were employed to reflect the combined features of AE parameters. Through uniaxial compression tests, we obtained mechanical and AE-signal data for five granite specimens. The maximum amplitude, hits, counts, rise time, absolute energy, and initiation frequency expressed as the cumulative value were selected as input parameters. The result showed that gradient boosting (GB) was the best model among the support vector regression methods. When GB was applied to the testing data, the root-mean-square error and R between the predicted and actual values were 0.96 and 0.077, respectively. A parameter analysis was performed to capture the parameter significance. The result showed that cumulative absolute energy was the main parameter for damage prediction. Thus, AE has practical applicability in predicting rock damage without conducting mechanical tests. Based on the results, this study will be useful for monitoring the near-field rock mass of nuclear waste repository.

• Journal of Information Technology Applications and Management
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• 제10권1호
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• pp.111-125
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• 2003

This paper proposes a product data model that can express and enforce integrity constraints on product structure during engineering changes (ECs). The model adopts and extends an active object-oriented database model in order to Integrate IC data and their integrity constraints. Tightly integrated with product structure, It will enable designers to maintain and exchange consistent EC data throughout the product life cycle. In order to properly support operations for ECs, the model provides the data, operations, and Event-Condition-Action rules for nested ECs and simultaneous EC applications to multiple options. in addition, the EC objects proposed In the model integrate the data and Integrity constraints into a unified repository. This repository enables designers to access all EC data and integrity constraints through the product structure and relationships between EC objects. This paper also describes a prototype product data management system based on the proposed model In order to demonstrate its effectiveness.

• 한국도서관정보학회지
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• 제46권4호
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• pp.529-549
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• 2015

본 연구는 우리나라의 개방형 기관 리포지터리 확산을 위해 리포지터리 수용의 영향요인을 분석하고자 한 것이다. 데이터 수집을 위해 개방형 기관 리포지터리 수용기관과 비수용기관을 대상으로 질문조사를 진행하였고 질문지는 수정된 기술확산 통합모델을 적용하여 구성하였다. 기술확산 통합모델은 혁신이나 기술이 특정 요인이나 계기를 통해서 사회전반에 확산되는 일련의 과정을 설명하는 이론이다. 분석결과, 개방형 기관 리포지터리 수용을 결정하는 주요한 영향요인에는 사회적 특성이 가장 많은 영향을 끼치는 것으로 나타났고 다음으로 기관의 특성, 혁신저항특성, 시스템 특성의 순으로 나타났다. 본 연구는 우리나라 리포지터리 확산과 활성화를 위한 정책 수립의 기초적인 자료를 제공할 것이다.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2010년도 추계학술대회
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• pp.349-355
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• 2010

EPCIS(EPC Information Services) system is a core component of EPCglobal Architecture Framework offering information of the freights, the time of awareness and the location of awareness on the EPCglobal Network. The role of EPCIS is to exchange information based on EPC. There are four kinds of event data which are object event data, aggregation event data, quantity event data, and transaction event data. These EPCIS events data are stored and managed in EPCIS repository. This paper leads to separate a in-out data overload of integrated EPCIS event and suggests the method to effectively manage EPCIS repository for exchanging data smoothly. In order to verify a effectiveness, we measure the performance of the system using a simple testing simulation by comparing existing method and suggested method.

• 대한안전경영과학회지
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• 제12권4호
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• pp.169-174
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• 2010

EPCIS(EPC Information Services) system is a core component of EPCglobal Architecture Framework offering information of the freights, the time of awareness and the location of awareness on the EPCglobal Network. The role of EPCIS is to exchange information based on EPC. There are four kinds of event data which are object event data, aggregation event data, quantity event data, and transaction event data. These EPCIS events data are stored and managed in EPCIS repository. This paper deals with the method which diversifies the data flow load of intensive EPCIS events and effectively manages EPCIS repository for exchanging data smoothly. In order to verify a effectiveness, we measure the performance of the system using a simulation by comparing the existing method with the suggested method.

• 대한임베디드공학회논문지
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• 제13권6호
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• pp.329-335
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• 2018

Offline-first strategy is that it allows data to be saved while offline, and when connected online, data is synchronized to ensure that all devices have the same data. Multi-device is a term that shares data through synchronization on various platforms on Android, ios, etc. First, all of the data is stored in the local repository like SQLite and then on the server via HTTP communication. Then, the synchronization is completed by receiving the changed data from the server and storing it in the local repository at the time of the synchronization, and sending the changes to the server from the client. We proposed and implemented a database structure, APIs, and a illustrative application running on PC and Android phone.