• Proceedings of the Korea Society for Industrial Systems Conference
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• 1998.03a
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• pp.207-211
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• 1998

오늘날 많은 양의 소프트웨어 제품을 우수한 품질을 가지도록 개발하고, 유지보수를 용이하게 할 수 있는 개발 방법론이 필요하게 되었는데, 이에 대표적인 방법이 객체지향 개발 방법론이다. 그러나 기존의 연구결과에 의하면 객체지향 분석 및 설계방법이 대부분 구조적 분석과 정보모델에 기반을 두고, 객체지향 프로그래밍 언어의 구문에 따라 분석 및 설계모델을 사용함으로써 개발 단계별 절차와 명세서등이 일치하지 못하는 문제점을 가지고 있다. 따라서 본 논문에서는 객체지향 개발 방법론중 Rumbaugh의 OMT 기법을 이용하여 사용자의 요구를 정확히 반영하고 시스템의 기능적 요구와 비기능적 요구를 체계적으로분석할 수 있도록 분석, 설계, 구현단계를 세분화하여 효과적인 소프트웨어 개발 전 단계를 지원할 수 있다. 그리고 객체지향 분석 및 설계에 대한 단계별 명세서 작성을 제시하고 명세서의 내용구현결과의 일치성을 도모하여, 도면정보 관리 시스템의 구현후 결함의 제거와 다른 속성의 향상 또는 환경의 변화에 따른 사용자요구사항의 변화등 향후 유지보수를 위한 사용자 중심의 시스템을 구축하고자한다.

• Proceedings of the Safety Management and Science Conference
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• 2010.04a
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• pp.573-585
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• 2010

최근 철도차량은 안전성과 신뢰성 향상을 위해 점차 복잡하게 설계 제작되고, 품질에 대한 기대와 요구수준이 점차 높아짐에 따라 운영기관에서는 과학적이고 체계적인 예방 정비를 통한 안전성과 가용성 향상을 위해 노력하고 있다. 이러한 목적을 달성하기 위하여 여러 방안들이 연구되고 있으며, 대표적으로 신뢰성 기반 유지보수(RCM; Reliability Centered Maintenance)가 철도분야에 지속적으로 도입되고 있는 추세이다. 본 연구에서는 새로운 예방정비 기술로 대두되고 있는 RCM의 기본이론에 대한 고찰과 RCM의 일반적 실시 절차를 소개하고, RCM의 국제규격인 IEC 60300-3-11, NAVAIR 00-25-403, MIL-STD-2173을 비교 분석하여 이를 바탕으로 철도차량에 RCM 도입 시 효과적이고 적합한 절차 및 방안을 제시하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.04a
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• pp.427-430
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• 2002

기존의 2 Tier나 3 Tier형태의 소프트웨어 개발 시 생산성과 효율성을 향상시키기 위하여 RAD Tool을 많이 사용하였다. 이러한 RAD Tool의 사용은 생산성과 효율성을 향상 시켰지만 소프트웨어의 유지보수나 성능 개선을 위한 작업 시 코드의 중복이나 복잡성 등의 증가 등 많은 문제점들을 발생되었으며, 이는 소프트웨어의 유지보수에 많은 문제점을 가져왔다. 이러한 문제점들은 역공학 기법을 통해서 해결이 가능하다. 역공학 기법을 이용하여 소프트웨어의 구조를 이해할 수 있는 정보를 추출하고 추출된 정보를 체계적으로 관리할 수 있는 시스템을 구축하여 문서화하는 것이다. 이에 본 논문에서는 소프트웨어의 소스코드를 분석하여 시스템 변경 등의 작업 시 문서화를 지원하여 생산성과 효율성을 증가시킬 수 있는 시스템을 설계 구현하였다.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10a
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• pp.513-515
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• 1999

웹은 소규모 정보에서 대규모 서비스에 이르기까지 광범위한 영역을 가지고 다양한 서버와 분산된 작업흐름 시스템에 대한 전역적인 환경으로 발전되어 오고 있다. 웹을 기반으로 하는 애플리케이션은 플랫폼에 관계 없이 접근가능한 브라우저와 표준화된 문서환경을 제공하며, 최소의 비용으로 단시간에 개발과 유지보수가 용이하다. 이러한 장점은 구조적인 변화와 웹 기반 구현기술의 발전을 가져왔지만 대부분의 웹 애플리케이션의 생성은 체계적인 프로세스없이 개발자의 지식과 경험에 의존하여 임시적으로 개발되어 왔다. 따라서, 고수준의 추상화를 제공하지 않는 저수준 기술에 기반한 애플리케이션 개발을 개선하고 웹을 기반으로한 애플리케이션 구축에 적용가능한 컴퍼넌트기반 개발 프로세스를 제안한다. 또한, 웹 애플리케이션에 적용 가능한 컴퍼넌트를 개발하기 위해서 분석, 설계 모델링 방법으로 네비게이션 다이아그램을 사용한다. 이는 모델링을 위한 고수준의 추상화 정의를 가능하게 함으로써 역으로의 개발을 통한 유지보수가 가능하며 구현기술의 재사용성을 기대할 수 있다.

• Journal of the Korean Society for Railway
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• v.10 no.3 s.40
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• pp.284-289
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• 2007

We analyze the real-field operational results of the RIMS. Four aspects are considered; 1) economical, 2) managerial, 3) safety and reliability and 4) RIMS user evaluation. In economical aspect we investigate the fields where some economical gains are anticipated. In managerial aspect the efficiency and effectiveness of management through RIMS are investigated. The improvement of safety and reliability are qualitatively discussed. And RIMS user evaluation is performed through survey. We also suggest several conditions for the successful settlement of RIMS and future study area for RIMS to be more reliable and perfect.

• Korean Journal of Construction Engineering and Management
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• v.9 no.1
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• pp.96-106
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• 2008

The Korean Construction Industry significantly contributed to the Korean economic development not only by preparing the domestic infrastructure but also by successfully conducting various international projects. However, major incidents such as the collapse of Sung-Su Bridge and Sam-Pung Department Store along with stagnation of Korean Economy have raised questions about underlying systematic problems of the Korean Construction Industry. As a solution to resurrect the Korean Construction Industry, the Construction Management (CM) system introduced in late 1990's and increasingly utilized as an innovative delivery system. Despite of the fast growth of CM, the performance of CM has not been up to the hype and low CM fee has been identified as one of the main reasons of unsatisfactory CM performance. Therefore, this research attempted to propose ways of improving 'CM Fee Guidelines' published by Korean Ministry of Construction and Transportation by conducting a benchmarking study on Global Standards of estimating CM Fee. International organizations benchmarked in this research include CMAA, ASCE, DOL, DOE, etc. Various investigation and analysis revealed that Korean 'CM Fee Guidelines' need to significantly modified comparing to Global Standards. This research also tried to prepare recommendations to improve the CM deliver system focusing on the 'Method of CM Fee Estimation' and Selection of a CM firm as an owner's agent.

• Journal of dental hygiene science
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• v.3 no.2
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• pp.71-76
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• 2003

The purpose of this study was to investigate the relationship of job satisfaction and self-esteem of dental hygienists and nurse's aides. Data were obtained from 327 dental hygienists and nurse's aides who were working at dental clinics, hospitals located in Seoul city. The results, derived from using the SPSS 10.0, were as follows: (1) The level of job satisfaction was 3.02 point, the level of self-esteem was 3.41 point. (2) Service organization and types of occupation have influenced meaningfully on job satisfaction. Hospitals(3.14) are higher than dental clinics(3.0), dental hygienists(3.14) are higher than nurse's aides(2.92). (3) Service organization and types of occupation have influenced meaningfully on self-esteem. Hospitals(3.55) are higher than dental clinics(3.39), dental hygienists(3.52) are higher than nurse's aides(3.31). (4) The correlation between job satisfaction and self-esteem of dentistry employee showed statistically significant correlation.

• The Journal of the Korea Contents Association
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• v.16 no.10
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• pp.235-254
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• 2016

This study examined the mediation effect of the family resilience between the family stress and social problem solving ability of the women social worker and welfare specialist, considering that women's middle age needs the resilience including the adaptation, reestablishment in the family life cycle. The sampling target was the 328 women social workers in the middle age, and it performed the Sobel Test for the mediation effect verification after enforcing the multiple regression analysis, next, it is same. Firstly, the economic problem was most highly severe among the family stress subfactor. Secondly, there was altogether the part mediation effect of the family resilience' subfactors, ie, communication processes, belief systems and organizational patterns between the family stress and social problem solving ability. In conclusion, if the family stress which the middle aged women social worker confronted was accurately analyzed and the family is intervened so that the family resilience functions properly, the social problem solving ability would be able to be improved.

• Journal of the Korea institute for structural maintenance and inspection
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• v.25 no.5
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• pp.114-126
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• 2021

This paper compared bridge maintenance in United Stated, United Kingdom, Japan, and Korea. Bridges play an essential role in transportation network and in the economic production process. To provide a desirable level of service to the public within limited budgets, it is required to provide effective bridge maintenance activities (e.g. inspection and repair/rehabilitation) at acceptable level of bridge service. A number of bridges are expected to age rapidly in Korea, which will be the excess burden of government. Since several countries have experienced a number of deteriorated bridges because of aging, the countries aforementioned in this study have already developed comprehensive bridge maintenance programs such as inspection practice and repair/rehabilitation techniques. Therefore, the goal of this paper is to synthesize and to compare useful knowledge on bridge maintenance and bridge crack repair/restoration of deteriorated concrete bridge in the four countries. Finally, recommendations that will serve as guidance to transportation agencies for potential enhancements to bridge maintenance and bridge repairs are presented.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.529-532
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• 2003

Efficiency and efficient management on maintenance/repair/operation (MRO) phase is getting important with advance in technologies and complex functionalities of building and facility. Using software systems as well as advanced hardware systems in MRO area is spreading along with this trend to take advantage of information technology. Information of building and facility for MRO phase is derived from engineering/procurement/construction (EPC) phase. But most current commercial software systems in EPC and MRO are focusing on their own phase, which arise lack of consistency of information from EPC to MRO phase. But, the information system now used at the MRO phase stop flowing the building and the facilities information and then newly create. Moreover, from all asset management point of view, asset particulars such as the structures and equipments are different the value fluctuation. In order to reflect these information rationally, the construction costs are correctly distributed and the initial price of the asset particulars have to be estimated. In this study, develop the information model which can apply the cost information at the EPC phase to the MRO phase.