• Proceedings of the KIEE Conference
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• 2003.07c
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• pp.1514-1516
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• 2003

NiCrFe 박막을 이용한 정밀급 박막 스트레인 게이지를 개발하였으며, 그 특성을 요약하면 다음과 같다. 스트레인한계: 5 % 이하, 저항: 350 ${\sim}$ 2,000 ${\Omega}$, 게이지 율: 2.1, 정도: 0.1 %, 피로한계 : $10^6$ at ${\pm}1500{\mu}{\varepsilon}$, 사용온도범위: $-75{\sim}150^{\circ}C$, 온도 출력: ${\pm}1{\mu}{\varepsilon}/^{\circ}C$, 게이지율변화 : +0.009%/$^{\circ}C$ 국산화된 박막 스트레인 게이지는 디지털 로드 셀 등에 적용할 수 있으며, 이 분야의 국내 기술력 향상에 이바지 할 것이다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2002.05a
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• pp.595-599
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• 2002

In this study, we try to develop the 3D automatic design program of screw thread limit gauge. When users, who have some mechanical information, input some date, they can do 3D-modeling easily like expert. This is one of the merit in automatic design program and the automatic design program can compare screw thread limit gauge made in this study with processed the bolt and nut model. This demonstrates the effective value of automatic design model. Screw thread limit gauge of sort divide into ring gauge of measuring bolt and pin gauge of measuring nut. The new created automatic design program follows the KS.

• Journal of Korea Game Society
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• v.19 no.3
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• pp.101-112
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• 2019

This study examines the potentials and limitations of interactive movies at present by reading the narrative of the interactive movie, through the concept of gamification. The 'quest' of the is to choose an option to play out the story in unpredictable world, and the 'reward' is the hierarchy of the ending. It is necessary to reduce uncertainty between option and ending, intensify playfulness, and provide a variety of discriminative endings in order to make viewers immerse deeper in interactive movies. Such an analysis implies that the intensification of gamification elements may influence the immersion in interactive movies positively.

• Journal of the Korean Society for Precision Engineering
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• v.13 no.1
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• pp.38-44
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• 1996

The CAD system for design and drawing of limit gauges was constructed and developed. This system was made by Visual Basic program. Using this system, drawings together with concerned data for the manufacturing of limit gauges are generated on the screen, file and printer. The data base was constructed by referring handbooks, textbooks, relevant standards and regulations. This system was proved a powerful tool for design and drawing of limit gauges by actual applications. The output drawings from this system are in good agreement with the drawings and data of the concerned standards and regulations.

• Journal of Korea Game Society
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• v.15 no.3
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• pp.87-96
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• 2015

Fun and happiness are the intrinsic values of the human beings. Game is one of the most efficient tools which satisfies those intrinsic values. Approaches and methods combining game and education to provide the enjoyable education environments have been increasing. As use of gamification in corporate and school education environments for human resources is increasing, significant voices of concern on the limitations and side effects of combining game and education are continuously increasing. The purpose of this paper is to energize the use of gamification in education environments by clarifying the limitations and side effects of gamification and seeking ways to overcome those factors. This paper summarizes an observational research on the limitations and side effects of gamification in education environments, and provides the interviewees' opinions on gamified classes.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2002.04a
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• pp.12-15
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• 2002

In this study, we will try to develop the 3D automatic design program of limit gauge. When users, who Have some mechanical information input some date, they can do 3D-modeling easily like expert. This is one of the merit in automatic design program and the automatic design program can compare the limit gauge made in this study with processed the bolt and nut model. This demonstrates the effective value of automatic design model. Limits gauge of sort divide into ring gauge of measuring bolt and pin gauge of measuring nut. The new automatic design program follows the KS

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2002.05a
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• pp.604-607
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• 2002

In this study, we will try to develop the 3D automatic design program of limit gauge. When users, who have some mechanical information, input some date, they can do 3D-modeling easily like expert. This is one of the merit in automatic design program and the automatic design program can compare the limit gauge made in this study with processed the bolt and nut model. This demonstrates the effective value of automatic design model. Limits gauge of sort divide into ring gauge of measuring bolt and pin gauge of measuring nut. The new automatic design program follows the KS.

• Journal of Korea Game Society
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• v.4 no.3
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• pp.43-47
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• 2004

Fast games such as first person shooting games and action games gives notiming surplus to analyze both states of enemys and my status normally. Behavioral of enemy characters in these games are generally produced by patterns. However It was weekpoints of exposure of patterns when gamers try many times. In this paper, we study the new patterns of enemy characters after analysing patterns of gamers

• Journal of the Korean Vacuum Society
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• v.7 no.1
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• pp.1-4
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• 1998

We have developed an extreme high vacuum (XHV) system using a new combination pump cpmposed of a suitably shaped NEG(Non-Evaporable Getters) in the body of a sputter-ion pump (SIP). The stainless-steel test chamber was used which had been well oxidized at $450^{\circ}C$ and already yielded XHV with a turbomolecular pumping system. The pressure was measured by a Leybold extractor gauge (EXG,limit:1~$2{\times}10^{-12}$torr, but in the ultimate pressure regionthe EXG shows an unusual sign as $-0.{\times}10^{-12}$ torr which indicates much lower pressure range than its available lower limit. These results are mainly due to the high pumping speed of NEG for hydrogen. Furthermore, use of the SIP combined with the NEG as a XHV pumping system implies the potential for actualization of the surface analysis under XHV environment, and allows one to have a chance tp meet a new world in nanometer science and technology.

• Journal of the Korean Vacuum Society
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• v.19 no.1
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• pp.1-9
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• 2010

A dynamic flow system has been developed which can be used for vacuum gauge calibration by comparison method - a calibration method in which the reading of the gauge under calibration is compared to another calibrated vacuum gauge called the "secondary standard" - and other vacuum-related experiments. The chamber of the calibration system is pumped by a turbomolecular pump (TMP), backed by a scroll pump. As maximum acceptable pressure at the inlet of a TMP is 0.1 Pa, above which the TMP decelerates, the pumping speed decreases and it becomes more difficult to adjust pressure under such circumstances. In the present work, high pressures of up to 133 Pa have been generated in the chamber of the newly developed dynamic flow control system by installing a well-designed conductance-reducer in the by-pass line and, at the same time, operating the TMP in safe mode. In addition, the gas flow and pressure distribution within the chamber have been investigated for the entire pressure range (0.1 Pa ~ 133 Pa) while generating pressure dynamically. Maximum deviations in pressure (1.6 %) were observed at point C on the chamber, which is close to the gas inlet port on the top of the chamber.