• International Journal of High-Rise Buildings
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• v.11 no.3
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• pp.197-205
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• 2022

One of important design challenges in Chongqing Raffles City Plaza project is Sky Bridge structural design and its connection scheme in high level. This article systematically describes the structural system and its design and analysis methodology, with discussing the impacts on structural performance due to different connection approaches. The seismic isolation scheme in high level is innovatively adopted to the final design. Under the conditions of various load cases, the different models and assumptions are implemented. A full assessment on Sky Bridge's structural performance, seismic isolation, and its connection is conducted in terms of seismic performance based design. By co-operating with architecture, MEP and other disciplines, the structural economy index is fulfilled.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2002.05a
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• pp.15-19
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• 2002

With the rapid development of industrial technologies, the demand for high precision products has been increasing drastically. For this reason, the need for developing of high performance machine tool, which can ensure high precision, is desired in the industrial fields. Technologies on the spindle system manufacture, guideway manufacture, error compensation, design of bed structure, protection against vibrations, and system integration are core technology for developing of high precision machine tools. Especially, among these, design of spindle system, which is leading precision and manufacturing technique. is one of the most important technologies. A high speed and high precision spindle system, which will be used for final machining of ferrule, is designed considering the effect caused by thermal, cutting torque, cutting farce, and work-piece materials. The detail process of analysis is presented.

• Journal of the Korean Society for Precision Engineering
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• v.19 no.7
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• pp.88-96
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• 2002

High-speed machining is one of the most effective technologies to improve productivity. Because of the high speed and high feed rate, high-speed machining can give great advantages for the machining of dies and molds. This paper describes on the improvement of machining accuracy in high-speed machining. Depth of cut, feed rate and spindle revolution are control factors. The effect of the control factors on machining accuracy is investigated using two-way factorial design.

• The Research Journal of the Costume Culture
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• v.14 no.1
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• pp.48-63
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• 2006

The purpose of this study was to provide information on how to improve both the satisfaction and the current sizing system for the school uniform focused on middle and high school boys' students. In order to collect the data, a questionnaire was administered to 451 middle and high school boy students. 228 middle school boys' and 223 high school boys' data were analyzed using the SPSS Win. 10.0 program. The results of this study were as follows : 1. For the satisfaction of their school uniform, there were statistical differences in mean of the group by the academic year in the jacket(color, textile, design, activity), shirt(color, design, activity), and pants(color, design, activity) in the case of middle school boys'. On the other hand, high school boys' evaluation of school uniform was significantly different in jacket(color), shirt(color, textile, design, activity), pants(design), and tie(color, textile, design) by the academic year. 2. For the evaluation of sizing fitness, the length of jacket and the breadth of sleeve in jacket, and the width of sleeve in blouse, the length of pants, and the width of pants were statistical differences in mean of the group in middle school boys' by the grade whereas there was no significant difference in high school students by the grade. 3. It was shown that more getting school uniform repaired after the point of purchase in both middle school and high school students was higher.

• Korean Institute of Interior Design Journal
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• v.21 no.5
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• pp.23-33
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• 2012

This study evaluated two educational spaces, one middle school and one high school in point of universal design. The survey method with an observation and measuring method was used. The subject were 238 students of a middle and a high school. They evaluated their schools according to 53 universal design related items which consisted of 5 principles. Findings were as follows ; 1) The width of passage between desk and desk was very narrow and there is the threshold at the door of classroom. The students evaluated them negatively, too. Also, they indicated that the size of individual locker was small and the corner of furniture was sharp. 2) The width of door and passage was narrow and the floor was not flat in restroom. The design quality such as color and finishes was not good. Also, the students evaluated all these items negatively. 3) The dining space was too big. That is, so many students takes meals in one big space. The dining tables were arranged in a long rows and the width between them was also so narrow to pass through. 4) The student of high school evaluated their educational environments more negatively than ones of middle high school. This means that the high school students were more dissatisfied with their school environment. The educational environment should be designed on the base of their students' needs.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.1247-1249
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• 2009

We have successfully developed the 22 inch WSXGA+ DLS(Data Line Sharing) Panel driving in 75 Hz. In the large size and high resolution panels, it is very difficult to design the DLS Panels without failure because of the very short charging time and the large signal delay. So, we first investigated the charging order to find the most adequate charging type to the large size and high resolution panels. And then, we optimized the design of DLS in terms of improving the charging properties using the technologies of the Delta-doping TFTs, Cu metal electrodes and optimization of panel design value and the circuit signal timing.

• Journal of the Regional Association of Architectural Institute of Korea
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• v.21 no.5
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• pp.161-168
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• 2019

The use of various digital tools makes freeform modeling possible. At the same time, with the development of structural and construction technologies, Free-Form Architecture are beginning to be implemented realized, as the desired data extraction such as the size and coordinate points of the members is possible. Currently, in many cities around the world, Irregular-Shaped High-rise Buildings, which express the dynamic symbolism, are recognized for their landmark values. In order to realize the Irregular-Shaped High-rise Buildings, it is necessary to understand various fields such as the characteristics of digital tools, digital technique logic, design process, and construction method. In particular, it is important to plan Irregular-Shaped High-rise Buildings so that the various types of efficiency can be reviewed together, while generating understanding and formations from the initial design stage. Therefore, this study uses conceptual and parametric design tools related to form generation in digital architecture to analyze the details, methods, and characteristics of the Irregular-Shaped High-rise Buildings form generation process. In this paper, the parametric design tool is applied to study the various types of design and the process characteristics that can be considered in the initial design stage of the unstructured skyscraper.

• 레미콘
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• no.7 s.72
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• pp.29-41
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• 2002

The purpose of this study is to investigarte the mix design method and the mechanical properties of High stength Lightweight Concrete (HSLC). In the experment, concrete mixing was conducted to select the optimum mix design for HSLC in laboratory. Also, concrete mixing in ready mix design. As a result, it is possible to establish the mix design of HSLC according to the using these experimental results ;the estimate equation for unit weight of HSLC. the relationship between W/C and compressive strength of HSLC and the fluidity of HSLC in the view of workability

• Transactions of the Korean Society of Machine Tool Engineers
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• v.12 no.3
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• pp.68-74
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• 2003

Any one of the high precision spindle systems and guide way systems, the high stiffness of structure, the error compensation during assembly, high accuracy control system is inevitable technology for development of high precision machine tools. Especially, among these, design of spindle system is one of the most important technologies leading high precision of machine tool and high quality of manufactured products. A high speed and high precision spindle system, which will be used for final machining of ferrule, is designed considering the effect of heat cutting torque, cutting fore, and work-piece materials. The detailed design and analysis process are presented.

• Korean Institute of Interior Design Journal
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• no.18
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• pp.87-95
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• 1999

The purpose of this study is to find out the High-Tech characteristics in interior of Korean contemporary architecture. To achieve the purpose of this study, the major contents are as follows: 1. Explaining the concept of High-Tech architecture desigv. 2. Explaining the characteristics of High-Tech architecture design in finding out the expressional and technical characteristics. 3. Analysing the building which have propensity to High-Tech design in Korea by means of the expressional and technical characteristics. 4. finding out the characteristics of High-Tech in Korean interior architecture and contributing to study the High-Tech interior desigv. By analysing the buildings showing High-Tech characteristics in interior of Korean contemporary architecture. The ranking of the High-Tech characteristics is lst new material and lightness, last polychrome. The ranking of the building is lst Posco center, 2nd Samsung traffic museum and Kolon new building.