• Journal of Korean Association for Spatial Structures
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• v.6 no.3 s.21
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• pp.51-57
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• 2006

The object of this study is to examine the managerial characteristics of the Korean building projects. The study in this paperproposes to investigate the factors that affect process quality not only in the construction phase but also in all three phases (design, construction, and operation) of the whole life cycle of a building project. A questionnaire survey is conducted to investigate the differences in the perceptions of graduate students, professors, designers and practitioners with regard to process quality in building projects. Analyzing these factors helps in revising and improving the Korean existing quality control system and programs. The findings indicate that cooperation of designer's professionals, level of management leadership in promoting quality, ability to operate the facility within design limits are important factors. Theparticipation percentage of "quality" treated in any course/seminar shows only 45%. It is recommended that college programs include courses that treat the administrative aspects involved in the building project and that continuing education programs rover quality training.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.310-316
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• 2008

This theory focuses on the Enterprise Portal and researches and analyzes the user requirement on as-is system. The UI Checklist Matrix is made based on the result of user analysis and evaluation of checklist. The horizontal axis of the Matrix is composed of 6 results(Layout, Navigation, Information, Function, Visibility and Interaction) of user requirement analysis. The vertical axis of the Matrix is composed of 10 subjects, Learnability, Efficiency, Accuracy, Accessibility, Consistency, Agility, Convergence, Personalization, Technology, and Standardization. At the point of vertical and horizontal items meet, indicates the graded of importance and defines a details item. The Guideline in which Matrix is reflected is set and according to the guideline, designing the business screen and assessing the Matrix.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.402-403
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• 2008

한전의 신배전정보시스템(NDIS)은 지리정보시스템(GIS)을 활용하여 전국에 시설되어 있는 방대한 배전설비를 데이터베이스로 구축한 후 배전계획, 배전설계, 공사관리, 준공정산, 자산취득, 유지보수 등 배전분야 전반의 업무를 수행하고 고객정보시스템과 연계하여 영업업무를 지원하는 시스템으로 저압공급방안검토, 고압계통분석, 보호협조검토, Simulation 등 배전분야에서 필요한 다양한 기술지원 기능과 경제적인 투자계획, 효율적인 유지보수 등을 위한 배전통계 및 자원정보 등 장기적 관점의 경영정보 인프라를 구축하여 배전설계에서 준공까지 업무흐름 표준화, 업무처리 절차, 방법 등을 시스템에서 자동 지원토록하여 반복적인 배전정보 관리업무의 정확도 향상을 목적으로 만들어진 시스템이다. 신배전 정보시스템의 배전설비는 모두 위치값을 가지고 있는데 지중배전설비는 위치에 대한 측량 및 탐사를 시행하여 신배전정보시스템에 DB입력하여 사용하고 있으며 이 입력 좌표체계는 한정된 일부지역에서만 사용할 수 있는 동경측지계를 사용하고 있다. 2010년 부터는 이동 경측지계를 전 세계적으로 GPS측량값을 그대로 적용할 수 있는 세계 측지계로 사용토록 측량법에 명시되어 있어 신배전정보시스템의 배전설비를 전환 프로그램을 개발하여 전환하고자 한다.

• Journal of the Korea Society for Simulation
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• v.22 no.1
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• pp.87-95
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• 2013

In the research and development processes of new product, the design objects are frequently redesigned on the basis of experimental results. Most of the conventional CAD systems are based on the computer simulation to reduce the number of redesign. However, these types of CAD systems do not have the functions to infer the cause of trouble in experiments of mock-up and the redesign counterplan of new product. This paper proposes a methodology to establish the DESYR ver. 1(Design Expert SYstem for Research and development) system, which possesses the engineering model of design object in the model database, and refines the model on the basis of experimental results of the prototype. The blackboard inference model has been applied to infer the redesign counterplan. And the validity of DESYR ver. 1 system has been verified by developing the new type of magnetic bearing.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.37 no.11
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• pp.1429-1436
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• 2013

This study presents an approach for designing a vehicle rollover prevention controller using differential game theory and multi-level programming. The rollover prevention problem can be modeled as a non-cooperative zero-sum two-player differential game. A controller as an equilibrium solution of the differential game guarantees the worst-case performance against every possible steering input. To obtain an equilibrium solution to the differential game with a small amount of computational effort, a multi-level programming approach with a relaxation procedure is used. To cope with the loss of maneuverability caused by the active suspension, an electronic stability program (ESP) is adopted. Through simulations, the proposed method is shown to be effective in obtaining an equilibrium solution of the differential game.

• The Journal of the Korea institute of electronic communication sciences
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• v.12 no.2
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• pp.315-324
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• 2017

The smart grid with distributed power supply introduces a number of problems including not only the problems of the existing power grid but also the problem of protection co-operation due to new electric phenomenon because it has a mixed operation structure combining the existing radial operation structure and the new loop operation structure. The EMTP based power system analysis method has flexibility and convenience from the view of system configuration but it requires another experimental verification because of uncertainty of design and analysis results. On the other hand, the real demonstration system has difficulties in observing accurate fault on large scale system due to considerable economical and spatial construction cost, system configuration constraint, and it is difficult to demonstrate the distributed, autonomous and adaptive control strategy of smart grid. In this paper, a basic theory for a micro smart grid simulator design using MEMS(Micro Electro-Mechanical Systems) miniaturization technology is studied which can safely and freely experiment and observe electrical phenomena, and distribution, autonomous adaptive control strategy for disturbances on 22.9kV smart grid under minimum economic and spatial cost.

• Korean Journal of Construction Engineering and Management
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• v.13 no.5
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• pp.113-124
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• 2012

TACT process reengineering is applied to the finish work of apartment buildings and extra tall buildings to conduct efficient process control in Korea. Non-systemized information on the performances, however, causes difficulties in building a database for such records and it takes long time to find the relevant information. In order to solve such problems, scientific and quantitative understanding on the construction information and data is required to perform TACT process reengineering satisfactorily and also proper management plan should be provided for the working level staff to understand the required information and data more easily. In this regard, this paper reorganizes the TACT process reengineering based on the general process control and classifies the items of required information to redesign. Redesigned process was verified by specialists making use of work-information matrix. As a result, paper contributed to increasing comprehension level of the working level people and when the persons in charge are transferred to other duty, it makes them understand all the working procedure faster, which enables the departments involved to carry out their cooperation and adjustment more efficiently.

• Explosives and Blasting
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• v.28 no.1
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• pp.71-75
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• 2010

A plan of construction of subsea tunnels connecting Korea-Japan and Korea-China have been discussing over the past several ten years. This paper were wrote about the present capacity of our engineer, the cooperation plan of politics and economy. Especially we examined and studied resolution method and technical problem in the construction of Sub-sea tunnel. In terms of excavation technology, Blasting and water resistance technology should be cared considering the status of rock such as fault in the deep sea. After of a construction work, it should be carefully designed and constructed for the fire and leakage management in Tunnel, It should be applied to High Construction Management Professional and Value Management(CVS) etc.

• Journal of Institute of Control, Robotics and Systems
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• v.16 no.9
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• pp.891-897
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• 2010

This paper proposes a cooperative control algorithm for a dual-arms robot which is carrying an object to the desired location. When the dual-arms robot is carrying an object from the start to the goal point, the optimal path in terms of safety, energy, and time needs to be selected among the numerous possible paths. In order to quantify the carrying efficiency of dual-arms, DAMM (Dual Arm Manipulability Measure) has been defined and applied for the decision of the optimal path. The DAMM is defined as the intersection of the manipulability ellipsoids of the dual-arms, while the manipulability measure indicates a relationship between the joint velocity and the Cartesian velocity for each arm. The cost function for achieving the optimal path is defined as the summation of the distance to the goal and inverse of this DAMM, which aims to generate the efficient motion to the goal. It is confirmed that the optimal path planning keeps higher manipulability through the short distance path by using computer simulation. To show the effectiveness of this cooperative control algorithm experimentally, a 5-DOF dual-arm robot with distributed controllers for synchronization control has been developed and used for the experiments.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.406-409
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• 2003

The procedure of present military facility remodeling has many problems at the stage of evaluating the priorities in various remodeling projects which have been caused from lots of corps. These problems have usually happened not only because of the shortage of the cooperation system in the related divisions but also because of the nonexistence of the effective process and method for evaluating the priorities. I've reviewed the study of remodeling and military facility business and applied the AHP(Analytic Hierarchy Process) method which is effective to evaluate the priorities in various groups' decision.