• Proceedings of the Korea Society for Industrial Systems Conference
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• 2008.10b
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• pp.129-136
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• 2008

When small organizations construct and operate Knowledge Management System (KMS), there exists inefficiency in employee participation and system usage. In recent years, web itself is evolving into web 2.0. And It is crucial to utilize web 2.0 characteristics into KMS. The problems in the original version of KMS(KMS 1.0) is as follows. KMS is separated from Offline and electronic work processing systems. Even information in the electronic work processing system cannot be accessed by employees of other divisions in the same organization. Now web 2.0 environment provides more enhanced user participation and information sharing. It also reinforces KMS 1.0 into KMS 2.0. Small organizations should take advantage of web 2.0 environment and construct the better version KMS of its own with low-cost and high-efficiency.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.61 no.12
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• pp.1944-1947
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• 2012

In this work, we investigated quench characteristics of matrix-type superconducting fault current limiters (MFCLs) according to the turn number of reactors. The reactors used in MFCLs apply magnetic field to superconducting elements within reactors when fault currents surge into MFCL systems. It makes the fast and simultaneous quenches between superconducting elements. Also reactors decrease the fault power burden of superconducting elements by bypassing the partial fault currents to itself, when quench occurs. These structure proposed in this work can be expected to achieve much more current limiting capacity even though it uses less superconductors compared with other type SFCLs. Three reactors were made by Bakelite. These reactors with the turn number of 190, 380 and 570, had the length of 270 mm and diameter of 80 mm. We reported experimental results, including fault currents, fault voltages and resistance in superconducting elements according to the turn number of reactors. We confirmed that experimental results will be useful in next future plan for the real power grid.

• 전기의세계
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• v.25 no.2
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• pp.87-91
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• 1976

Experimentally to investigate the conductive characteristic of oil-immersed paper, we observed the leakage current-voltage characteristic of oil-immersed paper, the temperature dependence of ionization rate and the effect of metal electrode on the leakage current. The results showed that the leakage current-voltage characteristic generally followed the experimental equation i=i$_{0}$ exp (K.root.E) and the slope K did not change by the temperature and electric strength, but only when the direct voltage was applied. And also the leakage current seemed to depend on the work function of metal electrode. From the above results we concluded that the deterioration of oil-immersed paper was not only caused by the thermionic emission from the cathode but also by the conductive property of oil-immersed paper in itself and the work function of metal electrode.e.

• Journal of The Korea Institute of Healthcare Architecture
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• v.12 no.1
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• pp.41-48
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• 2006

The purpose of this study is to find Healing elements in the late work of Frank Lloyd Wright. Healing elements are mainly composed of physical, social and psychological functions, which are clearly reflected in holistic attitude and intuition in his Organic theory of Architecture. Late works of Wright since 1935 show particularly shapes of triangle and circle creating the emotional images associated with Hope and Infinity. His image-oriented design attitude is thought to be strongly related to the pursuit of Utopian ideal which means peaceful condition. He regarded it as the consequence of integrity and control, which could be thought as condition of Healing environment. Refuge and Prospect can be complementary elements of spatial expression representing peaceful and dynamic condition of the Nature itself. Five works selected in this case study have unique design ideas related to the function and image of Healing environment interpreted by the criteria of Refuge and Prospect.

• Journal of the Korean Society of Safety
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• v.11 no.2
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• pp.128-135
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• 1996

The aim of this study is that HPMA(Hazard Potentials in My Areas) System is to present for establishment of the voluntary safety management on industrial region. HPMA System Itself means that manager, supuryisor and worker on process-line find out the hazardous and/or unsafe potentials from their work places and make the plan of improvement by means of mutual communication with top manager and the department of safety staff, eventually put in the practice. In case that it takes the longer time to improve hazard potentials and is impossible improvement by existing technique, appropriate check-list will be used by the worker himself on the identified production line. Form this system, therefore, it makes them to get more and more sensitivity to the hazards. In this study, we present the voluntary safety management system which is controlable systematically and in the final analysis the direction of safety management by computerization of HPMA System which is activated in their work places.

• Korean Institute of Interior Design Journal
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• no.32
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• pp.13-20
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• 2002

This study is purposed to find fundamental characteristics in Grassi's architecture which has architectural principles in architecture itself and in the general frame of the historical facts of architecture. His architectural theories can be explained for rationality, historicity, universality. The method of architectural composition can be divided into urban morphological characteristic and compositional characteristic of architecture. The characteristics of the former are the reconstruction of the urban structure by the readjustment of an urban axis which is based on historical continuity of the city, the open court which is a passage transformed from colonnade that is the historical vernacular type and the respect for the city-line which goes with historical context. The characteristics of the latter are the use transformed of nine square which gives consideration to centrality and typology at the same time and the hierarchic division of the principal space and the subordinate space for the functional typical purpose. This analysis shows that Grassi's architecture is on the base of historical continuity and urban reality and for him architectural work is mental work which conflict with the real world for the reconstruction of the city.

• Journal of the Korean Society for Precision Engineering
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• v.15 no.7
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• pp.36-43
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• 1998

Surface roughness of cold rolled steel sheet as well as the coating technique itself is quite important in obtaining high image clarity of electronic products and car outer panels. Especially, surface characteristics of steel sheet have acquired increasing attention from the steel and automotive industries. While the influence of such characteristics on paintability formability and painted surface appearance is important in defining steel surface requirements for automotive industries. Therefore this paper is dedicated primarily to the issue of paint appearance and reviews for improvement of roughness and peak count about the surface of work roll for the actual temper mill. The conclusions were obtained as follows ; 1) Roughness and peak count about the surface of steel sheet is strongly affected by surface condition of work roll. 2) The electro-discharge textured roll has more uniform roughness distribution than shot blasted roll and it's painted appearance of steel sheet has more improvement than that of the shot blasted because it has more harmonic wave roughness, and the higher peak count of surface roughness.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.28 no.5
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• pp.578-585
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• 2004

Hardness test is performed for determination of the other properties, such as strength, wear resistance and deformation resistance, as well as hardness itself. And it is performed for prediction of residual lifetime by analysis of hardness reduction or hardness ratio. However, hardness test has limitation that observation of residual indent is needed for determination of hardness value, and that is the reason for not to be widely used in industrial field. Therefore, in this study, we performed researches to obtain Brinell hardness value from quantitative numerical formula by analysing relationship between indentation depths from indentation load-depth curve and mechanical properties such as work hardening exponent, yield strength and elastic modulus.

• Korean journal of food and cookery science
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• v.15 no.4
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• pp.358-362
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• 1999

The purpose of this study was to measure the levels of job satisfaction of foodservice employees in the welfare facilities for the elderly. The levels of job satisfaction of foodservice employees were as follows: 1 Mean job satisfaction scores for five job factor were ordered co-workers, supervision, work itself, pay and promotion. 2. Demographic factors of the job satisfaction scores were studied. Employees who work with the dietition were satified with the supervisor and promotion. And temporory employees were more satisfied with pay than regular employees.

• International conference on construction engineering and project management
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• 2011.02a
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• pp.556-560
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• 2011

Players of construction projects proceed with each work process by information gathering, modification and communication. Due to the complex and long-span lifecycle projects increased, it became more important to grasp this mechanism for the successful project performance in construction project. Hence, most project information management systems or knowledge management systems equip information retrieval system. There are two logic to infer the meaning of retrieval target; inductive reasoning and deductive reasoning. The former is based on metadata explaining the target and the later is based on relation between data. To infer the information flow, it is necessary to define the correlation between players and work processes. However, most established information retrieval systems are based on index search system and it is not focused on correlation between data but data itself. Thus, this research aims to research on process of information flow retrieval system for large-scale construction projects.