• Proceedings of the Korean Information Science Society Conference
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• 2003.10c
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• pp.247-249
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• 2003

EJB(Enterprise Java Beans)는 웹 응용 서버 스펙인 J2EE(Java2 Enterprise Edition)의 핵심으로서, 비즈니스 업무를 웹 환경에서 컴포넌트 형태로 작성하여 재 사용성을 높이기 위한 서버 측 컴포넌트 프로그래밍 모델이다. EJB 2.1에서는 기존 EJB 2.0에 기술된 기능 이외에 웹 서비스, 타이머 서비스, EJB QL 업그레이드 등의 기능을 추가하였다. 타이머 서비스는 지정된 시간마다 EJB 빈의 특정 함수를 호출하는 기능이다. 또한, 타이머 서비스는 트랜잭션과 연관된 경우 해당 트랜잭션 컨텍스트(context) 내에서 타이머의 롤백(rollback)을 지원해야 하며, 시스템의 고장 후 재시작 시에 기존 타이머의 복구 기능을 지원해야 한다. 본 논문에서는 EJB 스펙 2.1에서 제시한 타이머 서비스의 요구 사항에 대해 알아보고, ETRI 에서 개발한 E504 EJB 서버에서 타이머 서비스를 구현한 방법에 대해 논의한다.

• Proceedings of the Korean Society for Information Management Conference
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• 2017.08a
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• pp.98-98
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• 2017

본 연구의 목적은 바이오뱅크(생명연구자원 소재은행)분야의 연구데이터 관리 및 서비스 동향을 고찰하고 시사점을 도출하는데 있다. 바이오뱅크 분야의 연구데이터 관리 및 서비스와 관련하여 해외 선진 사례를 프로그램과 서비스 모델측면에서 조사하였다. 조사된 프로그램과 서비스 모델은 ATCC(American Type Culture Collection), BIobank Data Sharing (MIABIS 2.0 Core), WDCM(World Data Center for Microorganism/Word Federation for Culture Collection)이다. 각각의 프로그램과 서비스 모델에서 시사점을 도출하였으며, 본 연구에서는 이를 기반으로 국내 생명연구자원 바이오뱅크 분야의 연구데이터 관리 및 서비스를 위한 시사점을 제시하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.19-22
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• 2006

최근 들어, 모든 장소에 컴퓨터가 있고 그것을 누구나 자유롭게 사용할 수 있는 인간 중심 유비쿼터스 환경에 대한 연구가 활발하게 진행되고 있다. 그러나 이러한 컴퓨팅 환경에서의 센서 미들웨어들은 연속적인 스트림 데이터 처리에 대한 막대한 비용을 줄이기 위해서 분석이 끝난 스트림 데이터를 삭제한다. 따라서 사용자의 서비스에 삭제된 스트림 데이터가 요구될 경우, 또는 과거 데이터들에 대한 확률 통계 정보가 요구될 경우, 이에 대한 서비스를 사용자에게 제공할 수 없다. 본 논문에서는 이러한 미들웨어에서의 스트림 데이터 재사용 문제를 해결하기 위해서 스냅샷을 가지는 다중 레벨 공간 DBMS를 기반으로 하는 효율적인 센서 데이터 미들웨어 구조를 설계하였다. 본 시스템은 사용자에게 재사용될 가치가 높은 스트림 데이터들을 다중 레벨 공간 DBMS 의 디스크 데이터베이스에서 관리한다. 또한 빈번한 서비스를 가지는 스트림 데이터의 경우 해당 스트림 데이터를 메모리 데이터베이스에 관리함으로서 사용자에게 신속한 서비스를 제공한다. 본 시스템은 기존의 미들웨어에서 지원할 수 없었던 동일한 스트림 데이터에 대한 빈번한 요청, 또는 확률이나 통계 자료와 같은 데이터 서비스 요청 문제들을 해결하였다. 그리고 메인 메모리 데이터베이스에 스냅샷 형태로 저장되는 스트림 데이터의 높은 데이터 재사용성을 유지함으로서, 사용자에게 지속적으로 정확하고 신속한 데이터 서비스를 제공한다.

• Journal of Korea Multimedia Society
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• v.14 no.4
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• pp.554-566
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• 2011

Service-oriented architecture(SOA) is a paradigm where reusable units are independently executable and only accessible through outer interfaces. Standardized methodology based on SOA has not been decided yet although a lot of efforts have been made for systems using SOA. Therefore Development of system using SOA is facing many difficulties currently. In this paper, service oriented methodology of function based model for supporting legacy system is proposed. Standardized methods for function based reusability through analysing SOA methodology are proposed and guide lines for improvement of service reusability are presented.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.1043-1046
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• 2008

관점 지향 프로그래밍은 구조적 프로그래밍, 객체 지향 프로그래밍 등 기존 프로그래밍 방법론에서 모듈화하지 못한 여러 요구사항에 걸쳐 있는 부가적인 요구사항을 모듈화 할 수 있는 방법을 제공한다. 모듈화 하기 어려운 요구 사항을 횡단 관심으로 분류하고, 이를 애스펙트 단위로 모듈화하여 재사용성을 극대화시키는 관점 지향 프로그래밍은 새로운 프로그래밍 패러다임으로 활발하게 연구가 진행 중이다. 본 논문에서는 현재 비즈니스 및 분산 컴퓨팅 환경에서 많이 이용되는 워크플로우 표준 언어인 BPEL에 워크플로우 서비스의 전이조건의 재사용성을 극대화하기 위해 관점 지향 프로그래밍 기술을 적용한 워크플로우 서비스 시스템을 제안한다. 본 시스템은 기존의 BPEL 엔진을 거의 수정하지 않고 AOP 기법의 적용이 가능하다. 또한, 웹 서비스 분기 및 선택을 위한 서비스 전이 조건으로 요구되는 정보를 실행 도중에 변경하여 웹 서비스 흐름을 재구성할 수 있고, AOP 기법을 이용하여 서비스 전이 조건을 변경하는 모듈을 재사용할 수 있다.

• Asia Marketing Journal
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• v.8 no.1
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• pp.105-132
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• 2006

The major purpose of this study is to investigate the impact of environmental uncertainties and logistics resources capabilities mediated by relational norms and logistics services on logistics performance in the industrial products. The 272 data were collected from the key informants who were working at the logistics-related departments in the H Heavy Industries & Construction and HSD Engine. The following results were verified using structural equation modeling. First, environmental uncertainties such as dynamism and heterogeneity unexpectedly had insignificant effects on relational norms such as information exchange and flexibility and logistics services such as product availability and on-time delivery. Second, logistics resource capabilities showed unique effects based upon its component's characteristics. For example, Logistics Information Systems did not have direct impact on logistics services but had indirect effect on logistics services via relational norms. On the other hand, logistics resources such as logistics specific assets and transportation service competencies had direct impact on logistics services but not on relational norms. Third, relational norms between transaction partners significantly affected logistics services but had insignificant effects on logistics performance such as logistics costs reduction and delivery qualities. Fourth, consistent with several studies, excellent logistics services between industrial purchaser and suppliers based upon relational norms did have significant effect on logistics performance such as delivery consistency and delivery qualities. Finally, the empirical results in this study could be strategic logistics management guidelines based upon the theoretical relationships among the environmental uncertainties, logistics information systems, logistics resources, relational norms, logistics services, and logistics performance.

• The Journal of the Korea Contents Association
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• v.12 no.10
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• pp.510-523
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• 2012

The purpose of this study is to evaluate an airline service training program based on the CIPP model. Evaluation areas were divided into context, input, process, and product. We analyzed the factors which influenced program satisfaction and recommendation of the training program. Two hundred and one learners who participated in an airline service training program were selected for a survey. The results of this study are as follows. The factors which positively influenced training satisfaction were educational goals in context evaluation, interaction between learners and instructors, managing programs in process evaluation, and training performance in product evaluation. The factor which negatively influenced training satisfaction was human resources in input evaluation. On the other hand, the factors which positively influenced training recommendation were educational goal, assessing needs in context evaluation, interaction between learners and instructors, supporting programs in process evaluation, and training performance in product evaluation. The factor which negatively influenced training recommendation was assessing needs in context evaluation. The results of this study are expected to make an important contribution to the development of service training programs in airlines.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.4
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• pp.73-81
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• 2020

This study compared nursing service satisfaction and revisit intention of comprehensive nursing care unit and general care unit patients and confirmed the impact of nursing service satisfaction on revisit intention. We used data from 201 survey questionnaires collected from four general hospitals located in B-metropolitan area. Data were collected from Jun 1 to 30, 2019. The data were analyzed using x²-test, t-test, ANOVA, Scheffé test, Pearson's Correlation Coefficient, and Stepwise multiple regression. The results show that nursing service satisfaction was significantly higher in patients admitted to the comprehensive nursing care unit than in the general care unit. There was a significant correlation in increased nursing service satisfaction being associated with increased revisit intention. Among subcategories of nursing service satisfaction, Empathy and Tangibles were cited by 56% of the comprehensive nursing care unit and 40% of the general care unit. As a result of this study, it is necessary to prepare a nursing system that can continuously monitor nursing service satisfaction in order to increase hospital revisit intention and expand the implementation of a comprehensive nursing care unit system.

• Journal of the Korean Society for information Management
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• v.39 no.4
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• pp.241-268
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• 2022

Records related to a certain cultural heritage are concrete evidence that prove the value of the cultural heritage and become a criterion for long-term preservation of its records. The value of the records is as important as cultural heritage value. In the case of specific cultural heritage with national or socially important values, various studies are conducted on cultural heritage as one theme, and various programs about cultural heritage are developed. However, it is difficult to grasp the scope, record types, and contents of the records because they have been distributed and managed in many institutes. They also appear in various forms. As a solution to these problems, this study collected records of a major cultural heritage with social and historical values such as Hwangnyongsa from 11 public institutions and web services and analyzed the types of records, activities related to the records, and metadata. Through data analysis, an ontology that can understand the range and relationship of the entire record was suggested so that the record can be understood with a focus on specific cultural heritage.

• The KIPS Transactions:PartD
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• v.10D no.3
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• pp.359-366
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• 2003

Although the reuse of the cached data for scrolling the map reduces the amount of passed data between client and server, it needs the conversions of data coordinates, selective deletion of objects, cache compaction and object structuring step in the clients. The conversion is a time- intensive operation due to limited resources of mobile phones such as low computing power, small memory. Therefore, in order to control the map efficiently in the vector map service based mobile phones, it is necessary to study the methods which reuse cached objects for reducing wireless network bandwidth and overwhelming the limited resources of mobile phones as well. This paper proposes the methods of reusing pre-received spatial objects for map control in the mobile vector map service system based on client-server architecture. The experiments conducted on the Web GIS systems with real data show that the proposed method is appropriate to map services for mobile phone. We also analyze the advantages and drawbacks between the reuse of cached data and transmission of raw data respectively.