• 한국지반공학회:학술대회논문집
• /
• 한국지반공학회 2010년도 추계 학술발표회
• /
• pp.1289-1293
• /
• 2010

A slipring or FORJ are usually adopted in order for power supply of Geo-centrifuge and input/output data acquisition. Since using slipring causes quite a lot electrical noise, an optical communication using FORJ becomes more general for data acquisition. Such data acquisition devices, however, require frequent maintenance and replacement due to deterioration by long term usage. DICT has set up a real-time wireless date acquisition system using wireless communication technology instead of FORJ. The system enables a remote measurement at any inertial acceleration field up to 100g level and provides as same performance as FORJ. The priority of this system is to use a normal modem substituting a special FORJ.

• International Journal of Costume and Fashion
• /
• 제11권1호
• /
• pp.53-61
• /
• 2011

This study examines the prati fashion style. prati fashion refers to a practical fashion, the most sought-after trend and newest fashion concept. This trend emerged as a response to the trio of minimalism, the recent economic downturn and the modern life style, and has led to powerful fashion lines and items. Therefore, this study is to understand and analyze the prati fashion style, with its focus on the 2010 modern fashion collection that embodied functional, economic, and minimal styles. First, the functional style realized by new materials provides comfort and allows multi-style changes. Second, the minimal style adds detailed changes to minimal silhouettes. Finally the economic style means easy to wear and easy to match items at affordable prices. The analyses stated above found that the prati fashion brought about a new paradigm to society, and influenced social, cultural and economic aspects of our daily life. It also helped find solutions to economic problems of this era. Drawing global attention, the prati fashion has functional, design and economic values, and thereby influences the shift of market paradigm.

• 한국정밀공학회지
• /
• 제28권9호
• /
• pp.1011-1017
• /
• 2011

Servo control loops are a core part in the control architecture of machine tools. Servo control loops manage acceleration, velocity and position of all the axes in a machine tool based on commands. The performance of servo control loops sets the basis for quality of production paris and cycle time reduction. First, this paper presents a general control architecture of machine tools and several control schemes in literature, which can be applicable to machine tools control; including Zero Phase Error Tracking Control (ZPETC) and Cross Coupling Control (CCC). After that, modem control strategies to mitigate the problem of high speed machining are reviewed. In high speed machining, high accelerations excite the machine structure up to high frequencies, thereby exciting the structure's modes of vibration. These structural vibrations need to be damped if accurate positioning or trajectory following is required. Input shaping is an attractive option in dealing with structural vibrations. The advantages and drawbacks of using input shaping technique for machine tools are discussed in detail.

• 한국정밀공학회지
• /
• 제21권12호
• /
• pp.21-28
• /
• 2004

In modem manufacturing industries such as the airplane and automobile, aluminum alloys which are remarkable in durability have been utilized effectively. High-speed machining technology for surface roughness quality of workpiece has been applied in these fields. Higher cutting speed and feedrates lead to a reduction of machining time and increase of surface quality. Furthermore, the reduction of time required for polishing or lapping of machined surfaces improves the production rate. Traditional milling process for high speed cutting can be machined with end mill tool. However, such processes are generally cost-expensive and have low material removal rate. Thus, in this paper, face milling cutter which gives high MRR has developed face milling cutter body for the high speed machining of light alloy to overcome the problems. Also vibration experiment to detect natural frequency in free state and frequency characteristics during machining are performed to escape resonance.

• 한국전산유체공학회:학술대회논문집
• /
• 한국전산유체공학회 2004년도 춘계 학술대회논문집
• /
• pp.132-138
• /
• 2004

Flush inlet, which has been chosen for modem air vehicles to take advantage of structure compactness and small RCS, gives rise to some aerodynamic problems such as flow separation and distortion due to vortices which deteriorate the performance of both inlet and engine. In this study, pressure recoveries at inlet exit plane were evaluated through numerical analyses of 3D turbulent flow for various inlet shapes and flight conditions. Inlet shape was controlled by changing ramp angle and width of throat, and effects of mass flow rate and angle of attack were investigated.

• 한국군사과학기술학회지
• /
• 제6권4호
• /
• pp.80-88
• /
• 2003

Radar signal simulation is increasingly gaining in importance according as modem radar systems are more complex. Although computer performance has been advanced, it is difficult to implement the real-time simulation because the detailed model for the radar is necessary to get the desired accuracy. In order to achieve real time operation, we propose radar signal generation technique using ambiguity function, Instead of wellknown correlation method. The ambiguity function is the mathematical modeling of the signal processing procedure which is a simulation section to require the most computations.

• 한국패션뷰티학회지
• /
• 제6권2호
• /
• pp.111-118
• /
• 2008

The Institute of Contemporary Art has gathered, arranged and exchanged historical data and a variety of information of art. It also aims at Helping revitalize artistic activities and develop diverse areas of art among regions. This scheme for revitalization of art includes holding seminars, international exhibitions or regional exchange exhibitions, publishing papers, and enhancing art education. This paper provides a view of what the Institute of Contemporary Art at Kunsan University has done so far, pursues better ways for revitalization of artistic activities, and suggests a future-oriented approach for making the institute a place for regional exchange of modem art and design.

• 한국의상디자인학회지
• /
• 제6권1호
• /
• pp.94-103
• /
• 2004

This study is to explore the '60s 'Retro' trend appeared in the 2003/2004 Fall ＆ Winter Pret-a-porter Collections which was held in the 4 major cities, Paris, Milan, London, New York on the February and March of the last year. It is often said that the '60s Retro trend is one of the most powerful fashion trends in the 2003/2004 season, and it really affects the modem fashion market nowadays. From this study, we can find that the '60s fashion mode certainly contains the 5 formative characteristics such as Minimal Look, Pop Art Fashion, Op Art Fashion, Space-Age Look, Femme-Enfant Style, and following these 5 characteristics of the '60s fashion mode the retrospective trend can be developed to finally create the '60s Retro Look presented in the 2003/2004 F/W Pret-a-porter Collections.

• 전기학회논문지P
• /
• 제58권2호
• /
• pp.101-107
• /
• 2009

This paper deal with development of on-line type voltage sag compensation system using supercapacitor EDLC to solve the voltage sag problems which are considered to be dominant disturbances affecting the power quality. With the wide use of semiconductor devices in electrical equipment, modem-type loads are becoming increasingly sensitive to the voltage sags and the disturbances prove to be costly to industries. Supercapacitor EDLC is employed to compensate dynamically for the voltage sag of system with sensitive loads. This capacitor has higher energy density than the electrolytic capacitor. Also, this capacitor has a lot of advantage such as no maintenance, longer life cycle and faster charge-discharge time than the battery system. Therefore, in this paper, the energy design scheme of supercapacitor and the configuration technique of on-line type voltage sag compensation systems are newly introduced. According to the results of experimental of prototype 5[kVA] system, it is verified that the developed system has effectiveness of voltage sag compensation by using a supercapacitor EDLC.

• 한국실내디자인학회논문집
• /
• 제13권2호
• /
• pp.20-28
• /
• 2004

This paper aims at researching the characteristics in Bruno Taut of architecture and its influence In Japanese modern architecture. We also can study how to harmonize Japanese traditional architecture with western architecture through activities of Bruno Taut in Japan. Especially, Japanese architectural society had a dispute on their national architectural style in 1910. During the 1930's, however, the rationalist architects denied this 'Jaegwan' style architecture, and insisted a different new Japanese architectural style. Thus Japanese modem architecture adapted two axis of Western and Japan, it had been developed with their conflict and harmony by turns. This activities of Bruno Taut in Japan deeply and freshly influenced on the contemporary Japanese Architectural situation.