• Journal of Korean Institute of Industrial Engineers
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• v.37 no.4
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• pp.390-399
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• 2011

Generally the life-cycle cost of complex systems composed of several sub systems or equipments such as train, aircraft weapon systems is spent much more during operation and maintenance phase than development phase. The maintenance cost for maintaining the availability and extending the life span of systems comprise a large proportion of systems operation cost. The cycle of preventive maintenance affects operation and maintenance cost a lot. In this study we introduce a way minimizing life-cycle cost of systems by calculating more reliable preventive maintenance period than the results of previous study using systems reliability data considered the reliability and failure effect ratio of sub-systems or components. We can solve the preventive maintenance period problem known as NP-Hard as quick as possible by using modified genetic algorithm than using other models introduced in previous study.

• Journal of the Korea institute for structural maintenance and inspection
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• v.27 no.1
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• pp.95-102
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• 2023

This study investigated the structural performance of wire-integrated steel decks with varied lattice end support conditions through finite element analysis. The results indicated that the steel decks with the lattice foots positioned above the supporting structural member have the higher system stiffness compared to the cases with the lattice foots shifted away from the support. It is also observed that the contribution of the end vertical bars on both the system stiffness and the strength is negligible when the lattice foots are located on the support. It is, especially, revealed that the end vertical bars can be eliminated when the lattice foot length is not smaller than 40mm. The ultimate load-carrying capacity of the system is not significantly affected by the lattice end support condition. The failure mode of the system is the top bar buckling at the center of the deck plate, the lattice end buckling, and the combination of both depending of design intention.

• Journal of the Korean Society for Precision Engineering
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• v.23 no.3 s.180
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• pp.12-21
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• 2006

• Korean Journal of Social Welfare
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• v.65 no.3
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• pp.207-238
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• 2013

The purpose of this study was to evaluate the integrated support program for children with ADHD tendencies and their social support system. The program, including individual art therapy, group life skills programs, culture experiences, individual counseling programs and regular network meetings between parents and teachers were carried out to children with ADHD tendencies in order to build environmental support systems. As results, the psychological and emotional behaviors of children with ADHD tendencies have changed. This study, also, was able to verify the possibility of positive changes for the children with ADHD. Based on these results, the practical guidelines for building the support systems of children with ADHD tendencies were suggested.

• Journal of Distribution Science
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• v.5 no.2
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• pp.79-100
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• 2007

CJ GLS Co. builds successfully Warehouse Management Systme (WMS), Customer Service & Support System(CSS), and Delivery Management System using RFID. This study tris to find out the effectiveness in CJ case. RFID, the core technology of Ubiquitous network, is now implied in our policy by the Ministry of Commerce, Industry & Energy. To support the study, examples from Korea and other countries using RFID system were introduced. Examples include the definition and features of RFID and the current applications of RFID. CJ GLS Co. used RFID to build the Integrated Logistics Management System effectively. The study analyzed the background of why to use this system, the goals and objectives of system building and the effectiveness of system building. In conclusion, the future of RFID and SCM was presented.

• The Journal of the Korea Contents Association
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• v.11 no.2
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• pp.367-375
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• 2011

This study conducts analysis on integrated care cases in Korea and other nations regarding health, medical, and welfare services that are segmented and fragmented in order to provide foundational data to establish an integrated care system appropriate for the situation of Korea. According to the result of the cases, integrated care provides various services in common through cooperation with organizations, collaborative participation of various professionals, provision of intervention and individualized protection, and experts for taking care of the cases. Based on those cases, this paper provides suggestions to establish an integrated care system of Korea. In fact, it is necessary to build integrated care general support centers, arrange service providing places in common, establish a care management system, develop resources and expand manpower, develop an integrated care case management system, and develop integrated care computer network.

• Journal of the Korean Society for Precision Engineering
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• v.24 no.8 s.197
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• pp.58-66
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• 2007

In order to improve the recyclability and to reduce the recycling cost and time, the disassembly technology should be systemized because the worn out products can be reused or recycled after disassembly processes. This paper attempts to propose the integrated CATIA-based DfD (Design for Disassembly) support system to promote the disassemblability of products. The system is composed of two modules; evaluation of disassemblability, generation of DfD alternatives. The disassemblability of current vehicle is evaluated to identify the weak point in terms of disassembly using the DELMIA and developed evaluation system. Furthermore a new expert system is developed to propose the optimal redesign rule and principle for generating the DfD alternatives. In order to generate the DfD alternatives, a CATIA-based design support system is implemented. The system can provide quick results and ensure consistency and completeness of the redesign alternatives.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2001.01a
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• pp.378-382
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• 2001

The purpose of this study was to develop an expert system supporting the diagnosis of diffuse interstitial lung disease by high resolution computed tomography. CLIPS(C language integrated production system) with rule-based reasoning was used to develop the system. Development of expert system had three stages knowledge acquisition, knowledge representation, and reasoning. Knowledge was obtained and integrated, from tables and figure legends of a representative textbook in the domain of this expert system, High-Resolution CT of the Lung, by Webb WR, Mueller NL, and Naidich DP. The acquired knowledge was analyzed to form a knowledge base. Overlapping knowledge was eliminated, similar pieces of knowledge were combined and professional terms were defined. The most important knowledge of findings was then selected for each disease. After groupings of combined findings were made, disease groups were analyzed sequentially to determine final diagnoses. The system was based upon the input of 69 diseases, 185 findings, 73 conditions, 387 status, and 62 rules. The system was set up to determine the diagnoses of diseases from the combination of findings using forward reasoning. In an empirical trial, the system was applied to support the diagnosis of 40 cases of diffuse interstitial lung diseases. The performance of two doctors with support of the system was compared to that of another two doctors without support of the system. The two doctors with the support of the system made more accurate diagnoses than the doctors without the support of the system. The system is believed to be useful for the diagnosis of rare diseases and for cases with many possible differential diagnoses. In conclusion, an expert system supporting the high resolution computed tomographic diagnosis of diffuse interstitial lung disease was developed and the system is thought to be useful for medical practice.

• Journal of the Korea Society of Computer and Information
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• v.24 no.10
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• pp.243-249
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• 2019

In this paper, we proposes a comprehensive analysis of the characteristics, selection procedures, and management perspectives of each university's financial support project, and derivation of a plan to integrate the information system of the university's financial support project. To this end, we analyze the current status of business operations before and after restructuring university financial support projects, and identified the characteristics, commonalities, and differences of each project. Individual projects are promoted segmentally, evaluation indicators and evaluation methods are different for each business, standardization is difficult, and in the absence of integrated governance, sympathy and will of the system integration of the government and the managing agency cannot be found. In order to integrate the system, the business management process must be integrated and standardized, and the system equipment such as budget category adjustment must be complemented, and a stable budget for system integration must be secured.

• International journal of advanced smart convergence
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• v.7 no.4
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• pp.121-127
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• 2018

This paper develops and builds an Integrated Assessment System for National Competency Standard Professional Basic. The integrated evaluation system for basic job competency in the National Competency Standards is developed to conduct examination by means of computers, smartphones and tablet PCs. The system can be used for the basic job competency test, examination for online cyber universities, job competency examination for enterprises, and the listening, reading, and speaking test in the foreign language proficiency examination and is even better in terms of facility investment and saved operating costs as well as efficient use of spaces in comparison with conventional evaluation schemes. Even greater synergy effects can be achieved by providing support for the integrated evaluation system for basic job competency in connection with the NCS qualification system. The evaluation system has been tested and practiced at a specialized high school and can be applied to the NCS education evaluation of the college and four-year college and to the selection examination of new employees of the company.