• Asia pacific journal of information systems
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• 제32권3호
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• pp.537-563
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• 2022

This study investigates the adoption and application of digital transformation in the financial sector and analyzes the process and outcomes of digitization and digitalization in the field of the finance industry of South Korea and overseas, in order to seek both managerial and strategic implications for successful implementation of digital transformation in the future. The findings show that, for successful digital transformation, it is necessary to maximize active and systematic use of advanced online and digital technologies that form the basis of business and create an open, horizontal organizational culture and communication system to equally share and distribute advanced technologies and competencies through the entire organization. Furthermore, this study also discovers the legitimacy to concentrate the organizational competencies and know-how in providing technical training for members, expanding customer experience, and improving customer satisfaction services to contribute to improving the quality of life for members of the organization and creating and improving social and public infrastructures, instead of using digital transformation only to improve productivity of organizations or firms. As such, it is necessary to concentrate corporate competencies in establishing and supplying digital transformation that is not just human-centered but also has productivity, innovativeness, and reliability at the same time.

• 한국정밀공학회지
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• 제24권12호
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• pp.82-87
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• 2007

Excavator has been used in wide field since the attachment in the end effect can be changeable according to the purpose of working. However, efficiency of work using excavator mainly depends on an operator's ability. For the purpose of improving the efficiency of work and reducing the fatigue of operator, the automatic excavator system has been researched. In this paper, the tracking control system of each links of excavator is designed before developing the automatic excavator system. In order to apply the tracking control system, the pneumatic excavator system is developed and the tracking control system is applied. For designing the tracking control system, the adaptive sliding mode control algorithm is proposed. The performance of the proposed control system is evaluated through experiments using the pneumatic excavator system.

• 한국철도학회논문집
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• 제8권5호
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• pp.460-469
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• 2005

Turnkey contract system is an effective ordering system for the ordering organizations that technical engineers are insufficient for their construction projects. It is possible to reduce project duration and to improve project quality in an integrated contract system between design and construction. However, owners can have a difficulty caused from unitary responsibility system. This study analyzes present situation and problems of turnkey contract system including railway projects. The result includes various methods for improving the system based on the analysis of bid price and selection procedure.

• 항공우주시스템공학회지
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• 제14권6호
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• pp.44-57
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• 2020

The ICAO AMO global recognition system will be instituted in 2024, with the aim of reducing the certification and surveillance burden on aviation authorities and approved maintenance organizations (AMOs). If the domestic AMO certification and surveillance system is internationally recognized through this system, it may facilitate the rapid development of the domestic MRO industry in South Korea. To ensure international recognition of the domestic AMO system, the AMO surveillance and regulation system must be improved. This study reviewed ICAO policies, standards, guidelines, and leading aviation authorities' regulations and systems with regard to maintenance organization certification and surveillance, and a comparative analysis with the domestic system was conducted. From this, gaps in aviation safety inspection personnel training, qualification, and surveillance were identified, and measures for improving inspection personnel training and organization certification and surveillance system maintenance were elucidated to preemptively respond to the ICAO AMO global recognition system.

• 한국항만학회지
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• 제5권1호
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• pp.55-69
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• 1991

A Container terminal is a physical link between the ocean and land modes of transport and a major component of the container physical distribution system. A number of projects to increase terminal productivity in the world were found to be tied directly to increasing the efficiency of the intermodal activities, that is, to improving the physical distribution process. This is an indication that the productivity of container terminal is being considered withing a system prospective. The purpose of this study is to establish a model of the container physical distribution system for Pusan port linked with 4 sub-systems including Navigational aids system, Cargo handling/transfer/storage system on dock, Off-dock CY system and In-land transport connection system. and to analyze the system. From this analysis, we found that the system had three bottlenecks on the container physical distribution process in Pusan port : a) cargo handling b) storage and c) inland transport, and showed a way to improve the system.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2006년도 추계학술대회 논문집
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• pp.906-911
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• 2006

Since railway system has been developed, the interface system which is interfaced with various sub-systems of railway including rolling stock, SIG, COM, catenary system came out more complicated and mixed-up. For the purpose of improving the management techniques about interface system among the sub-systems of railway, this paper proposes method of management by using of SE(system engineering) that makes structure of data system through describing and separating the user's requirements, functional analysis and interface of the train control system in its degree. This study is focused on the ATC signaling sub-system, a important part of SE, to analysis of the system.

• 동력기계공학회지
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• 제18권6호
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• pp.200-206
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• 2014

This paper deals with deterministic PI controller design based on dynamic characteristics for refrigeration system. The temperature control system of an oil cooler is described as a typical 2nd order model of the refrigeration system which has zeros in a transfer function. PI controller gains satisfying control specifications are represented by the dynamic characteristic functions using relationship between the parameters and the control specifications in the model. Phase margin was considered to increase robustness of the oil cooler control system. Furthermore, the influence of zeros in the model to the control specifications was analyzed in detail for improving control performance. The validity of the suggested PI controller design was investigated using the four types of gains which had been already confirmed their control performances through experiments.

• 한국도서관정보학회지
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• 제36권3호
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• pp.21-38
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• 2005

본 연구의 목적은 미래 과학지식사회의 주역인 청소년의 과학에 대한 이해와 활용능력을 높이는 과학적 소양의 향상 방안을 제시하는 것이다. 과학적 소양은 현대사회에서 꼭 필요하다는 주장이 많은 지지를 받고 있으며, 이에 따라 국내외에 다양한 프로그램이 개발되고 있다. 특히 미국의 '프로젝트 2061'은 과학적인 프로세스를 통하여 문제 해결력을 키워 평생학습을 유도하려는 것으로 모든 미국인들이 과학, 수학, 기술영역의 소양을 함양하도록 지원하고 있다. 청소년의 과학적 소양 향상을 위해서는 과학에 대한 호기심과 흥미를 유발하는 정보서비스뿐만 아니라 학교 수업과 연계된 콘텐트 개발이 무엇보다 중요하다. 또한 과학적 문제 해결력을 배양하기 위한 단계별 문제해결 프로그램의 개발이 필요하며, 과학정보 소양으로 통합된 교육과 연구가 진행되어야 한다.

• 한국컴퓨터정보학회논문지
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• 제18권1호
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• pp.111-121
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• 2013

본 논문은 기존의 국방 정보기술(IT) 조사의 개선을 위한 실태를 분석하고 기술수준조사 결과를 바탕으로 2012 국방 정보기술(IT)을 제시한다. 기존의 국방IT조사는 2008년과 2009년에 실시되어 책자형태로 배포되어 시스템으로 관리되고 있다. 기존의 국방IT조사는 86개 기술을 대상으로 조사하였으나, 선정 방법 등 제공되는 내용이 단순하였다. 따라서 기존의 국방IT조사 개선을 위해 관련 유관자들에게 인터뷰 및 설문을 실시하였고, 활용 측면에서 시스템 분석과 배포된 문서를 파악하여 개선사항을 도출하였다. 이를 바탕으로 조사대상 기술을 다양한 측면에서 검토하여 선정하였고, 약 130명의 전문가들에게 자료에 대한 검토 및 기술수준을 위한 설문을 의뢰하였다. 기술수준은 최고기술 보유국가, 기술격차, 파급효과, 기술 달성시기, 연구개발방법 등을 요소로 하였다. 이를 통해 2012 국방IT조사의 40개의 기술을 선정하였고, 각 기술별 수준조사결과를 제시하였다.

• Korean Journal of Acupuncture
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• 제38권2호
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• pp.62-74
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• 2021

Objectives : The aim of this study is to analyze the effect of acupuncture and the details of acupuncture treatment methods on skin wrinkles. Methods : Search was conducted in Pubmed, KISS, and NDSL databases for acupuncture studies on skin wrinkles. The detailed therapeutic techniques of acupuncture used for skin wrinkles and the effect of acupuncture on skin wrinkle improvement were analyzed. Then, the study results using the same indicator were compared through meta-analysis in order to compare the effects of acupuncture with the control group. The quality of randomized controlled trials (RCTs) was assessed using the risk of bias (ROB) assessment tool (Ver. 1.0, Cochrane Collaboration). Results : A total of 10 RCTs and 19 case series were included in this study. The most frequently used therapeutic technique for skin wrinkle improvement was Microneedle therapy system (MTS, n=19), and they were mostly used with aesthetic solutions (13 out of 19 studies). Skin wrinkle related indexes were most commonly used to evaluate skin wrinkle improvement (n=14). Panax Ginseng pharmacopuncture showed the most remarkable effect in improving the range of skin wrinkles and the depth of skin wrinkles. MTS+epidermal growth factor improved the levels of skin hydration, skin elasticity, and variation of skin pigment the most. MTS+Endothelial precursor cell improved the number of skin melanin the most. Three RCTs included in the meta-analysis showed moderate ROB on average. Conclusions : Acupuncture treatment was effective in improving skin wrinkles. However, a precise study design using unified indicators and appropriate controls needs to be performed in further studies in order to establish more convincing evidence of the effectiveness of acupuncture for improving skin wrinkles.