• Proceedings of the Korean Society of Life Science Conference
• /
• 2000.09a
• /
• pp.82-82
• /
• 2000

• Communications of the Korean Mathematical Society
• /
• v.11 no.1
• /
• pp.109-115
• /
• 1996

A number of authors have generalized contraction mapping theorems in metric spaces. In this paper, we give some common fixed point theorems related with the diameter of the orbit on metric spaces. We generalize the results of M. Ohta and G. Nikaido [6], also Taskovic [8].

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.19 no.39
• /
• pp.27-36
• /
• 1996

The objective of this paper is to outline an integrated cellular manufacturing system (ICMS) which integrates process planning and scheduling in the cellular manufacturing environment. It combines design systems with manufacturing systems in batch production. Furthermore, it is developed to overcome the difficulties that exist in the current manufacturing practices.

• Proceedings of the PSK Conference
• /
• 2000.10a
• /
• pp.255.2-255.2
• /
• 2000

• Proceedings of the PSK Conference
• /
• 2001.10a
• /
• pp.270.2-270.2
• /
• 2001

• Journal of Environmental Science International
• /
• v.17 no.4
• /
• pp.385-396
• /
• 2008

The air quality data is important for understanding and analyzing a surrounding influence. In that light, it is positively necessary for a propriety assessment to determine a location of the air quality monitoring sites. In this study, the climate analysis about temperature and wind, using the meteorological data in the Pohang, is conducted to do that. In the next stage, we distinguished the wind by east-west or north-south component, which has less correlation than temperature, analyzed and divided the wind sector. As the result, the wind circumstance of the Pohang is divided into major 5 wind sector; that is the urban area, the northeast coastal area, the east ocean and the west mountainous area. We think that an analysis on detailed wind sector by utilizing the numerical simulation is needed.

• Electronics and Telecommunications Trends
• /
• v.30 no.6
• /
• pp.42-49
• /
• 2015

질화물 반도체 기반 가시광 청색 Light Emitting Diode(LED) 기술은 디스플레이의 Back Light Unit(BLU)뿐 아니라 일반 조명에 활용되며 우리 실생활에서 매우 밀접하게 사용하고 있다. 가시광보다 짧은 파장을 가지는 자외선 LED의 경우 경화기 및 위폐감지기에 기존의 유해 가스를 사용하는 자외선 램프를 대체하고 있다. 자외선 광원의 또 다른 거대 시장으로 살균 및 정화, 의료 및 바이오 응용 시장에서 자외선 램프를 대체할 수 있는 자외선 LED 기술이 활발히 발전하고 있다. 본고에서는 이들 자외선광원 시장동향과 국내외 자외선 LED의 기술동향을 파악하므로 앞으로 연구개발의 방향을 모색하고자 한다.

• 대한예방의학회:학술대회논문집
• /
• 2001.10a
• /
• pp.462-463
• /
• 2001

• 대한예방의학회:학술대회논문집
• /
• 2001.10a
• /
• pp.228-230
• /
• 2001

• 대한예방의학회:학술대회논문집
• /
• 2005.10a
• /
• pp.448-448
• /
• 2005