• Transactions of the Korean Society of Automotive Engineers
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• v.2 no.4
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• pp.59-71
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• 1994

A multi-polynomial method is proposed to synthesize DRRD cam profiles. A cam lift duration s divided into 10 sections, each of them is expressed by a polynomial equation. 12 design variables are extracted from the cam profile displacement, velocity, and acceleration curves. Because all the design variables have physical meanings which are familiar to most cam designers, it is easy to imagine a profile shape from the design variables. The design envelope of the method is wide enough to be used in DRRD automotive cam designs. Polydyne cams, widely used in automotive engines, are included into the envelope. Unlike Polydyne cams, the method provides capability of wide velocity factor variations, which gives much flexibility in flat-faced tappet design. Area factor of profiles designed by the method can be increased 5-10% compared to those of Polydyne cams without increasing acceleration factor. The method is especially useful for cam profile optimizations.

• Journal of the Korea Furniture Society
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• v.12 no.2
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• pp.91-103
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• 2001

Modern Art Furniture has been represented new idea and energy for futuristic furniture design by interacting and confronting with 3 points of view, which are; the idea and emotion of art, the form and concept of design, and the technique and materials of craft. Besides, meanings of modern Art Furniture are also can be described as followed. First, offend of concept of furniture design area to art, second, help to raise the social status of people by making art to be popularized, third, present a new direction of futuristic furniture design culture. Art Furniture design area, which has been trying to make a constant approach to human consideration and sensibility, leads new furniture design culture as an independent art genre in this 21st Century.

• Bulletin of the Society of Naval Architects of Korea
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• v.24 no.4
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• pp.71-83
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• 1987

There is at present a growing interest in the use of SWATH(Small Waterplane Area Twin Hull )ship for a variety of purposes due to their good seakeeping characteristics, small speed reduction in wave, and large deck area. Highly sophisticated design technology is requested to develop the SWATH ship. This paper describes the design technology for high speed coastal passenger SWATH ship which includes feasibility study, general arrangement and hull form design, resistance and propulsion test, motion test in regular waves, control fin design, and structural design.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.05a
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• pp.241-242
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• 2005

Due to the change in modern lifestyle and social pattern, food service industry has steadily grown recently. Especially, in terms of familiarity, chinese restaurant can be most popular type of dining alternative to Korean. The project was aiming to establish a new branch of the existing restaurant which has a main location in Kangnam area and has been famous for it's food quality, kind services and good interior design. This restaurant is located in Seohyoun-Dong, Bundang-Gu, Kyoungki-Do and this area is very crowded by both residential apartments and commercial offices. Considering the complexity in regional characteristics, this restaurant has basically targeted frequent dining-out family groups. In addition, the floor design was flexibly developed to be able to accomodate large office dining customers. The overall design was intended to keep very elegant and simple atmosphere, developed to express eco-friendly image by adopting the 'Water' component in the floor plan.

• Proceedings of the Korean Geotechical Society Conference
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• 2010.09a
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• pp.1302-1313
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• 2010

The west express way is notorious for extremely heavy traffic area in the west of Seoul, South Korea. Hence, the city government recently initiated a new underground BTO (Build-Transfer-Operate) road project to solve traffic congestion and a high construction cost. The proposed underground express road being designed is the first double-level tunnel ever designed in South Korea and using Conventional tunnelling method (NATM). A total length of tunnel for light vehicles is 10.91km long including both open cut structures and concrete lining with middle-deck in bored tunnel. There are also 4 ventilation shafts for ventilation and evacuation on emergency. Many design issues had been aroused during the preliminary design phase and detail design phase is currently going on. This paper discusses design focuses including excavation methods, ground water issues, a deck slab installation, and a construction cost etc. for the double level road tunnel design of urban area.

• Journal of Korean Society of Rural Planning
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• v.1 no.2
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• pp.67-76
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• 1995

The actual condition of farmstead, mainly livestock facility, was surveyed in ChungChongBukDo in order to find out factors and problems of farmstead planning design. From the data collected, a type, plot, size and scope of farmstead, relationship of house and farmstead, topography, climate, proprietor's opinion on them were analyzed or obtained as the basic design criteria for planning: designs. The best type of farmsteads was individual farm having livestock facilities. They were mostly breeding a kind of livestock without their plan and Bone planning at residing area. The south aspect of the facility was extremely much and slope of the land was mostly 15。 below. Wind blows from East-South in summer and winter wind are West-North extremely much. Sun heat was mostly above 6 hours. In the case of collective and composite farmstead, proprietors wanted that a head of cow has 1,000-3,000 pyeong, the area of facility has 1,500-2,000 pyeong, total area of farmstead has 45,000-400,000 pyeong and an estimated expense is 0.2 - 1.5 billion won. Farmstead planning design was proposed through field survey results and contents of'references. Examples of farmstead planning design were composite and concentrated type and existed according to the situation of road(North, South, East, and West).

• Journal of The Korean Digital Architecture Interior Association
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• v.9 no.3
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• pp.37-45
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• 2009

New city development policy caused many effects such as destruction of nature and area native culture extinction through fast development within short period. The architectural context is remains by post-modern most difficult problem had left to architects. We need to find the design method that communicate and contacts character of place, cultural context through the actual project. In this study, we propose the method of aspect of compose space and design elements to succeed the cultural place and context, desirable development through the design proposal for Dochon welfare center. In Dochon area, there is no original character of the place because of indiscreet development. Dochon synthesis society welfare facilities is openable to people by space that nature and human contacts and accomplishes relation, Made efforts to do so that can do part that causes human's ripple effect of contact with human and accomplishes traffic and recovers identity of Dochon area at the same time recovery of community consciousness.

• Journal of the Korean Institute of Rural Architecture
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• v.9 no.1
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• pp.9-16
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• 2007

Educational Facility has a specialty that similar design is repeatedly taken place so the importance of POE(Post Occupancy Evaluation) is increased for the improvement of problem appeared at the former projects. The POE could provides help to the design of next project and the direction when the need of remodeling is faced. Through the process of POE, the repeat of design mistakes could be prevented and the good information related with building efficiency and other problems could be applied to the design of next school project . In this study, the POE of Manbalro(barefoot) toilet of D Elementary school in rural area of H county is performed. The toilet is renovated as an educational environment improvement project of H county educational office in Chungcheong Namdo Province. The study is focused on the user's behavior at Manbalro toilet for carrying out indicative POE by the subjective response of user's. From the research, several being reformed items is proposed however the toilet is evaluated as a successful project that design purpose of initial stage is applied well.

• Journal of the Semiconductor & Display Technology
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• v.10 no.4
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• pp.119-124
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• 2011

Flow and temperature field in reactors are important factors for design of thermal chemical vapor deposition system to grow carbon nanotubes. In this study, effects of the variations of the inlet and outlet areas of the CVD reactor to the flow characteristics and temperature field are numerically analyzed. High temperature of the gas in the entrance region is obtained with slow gas speed resulted from the enlarged inlet area. Variation of the exit area has little effects on the flow field and temperature in the reactor. However the largest area among considered cases gives the highest gas temperature though the differences are small.

• Proceedings of the Korean Geotechical Society Conference
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• 2008.10a
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• pp.691-699
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• 2008

In the design of a foundation, settlement of the foundation may exceed allowable design criteria even with a competent bearing stratum. In such a case, a piled-raft foundation system may be adopted using piles as settlement reducing component. In this paper, Disconnected Piled Raft Foundation (DPRF) system, which installs disconnected piles underneath the raft and uses the piles as ground reinforcements, is studied as a cost effective design method against the classical piled-raft foundation system. To this end, large size loading tests were carried out on weathered ground changing area replacement ratio and length of piles. The results indicated that the settlement of the reinforced ground was reduced by 34~87% and the allowable bearing pressure increased by 70% on average from those of the unreinforced original ground, respectively. The correlating formula between the area replacement ratio and the load bearing ratio of piles were derived from the test results and numerical analysis. From the correlation, a design method determining the size and the quantity of the disconnected piles to enhance the bearing capacity of original ground to the desired value was proposed based on one inch settlement criteria.