• Maxillofacial Plastic and Reconstructive Surgery
• /
• v.23 no.5
• /
• pp.422-427
• /
• 2001

Anterior segmental osteotomy were performed in 8 patients with Angle's II malocclusion or anterior maxillary protrusion. Cupar's method was used for operation. The period of follow up for patients were 15 months by average. This study discussed the postoperative complications and soft tissue change after anterior segmental maxillary osteotomy. There are not specific major complications.

• Proceedings of the KIPE Conference
• /
• 2011.11a
• /
• pp.267-268
• /
• 2011

In order to increase the efficiency of the PV solar can get maximum power output from a control is up. But MPPT request Converter since Solar module always work MPP about out condition. This paper study of 170W stand-alone PV MPPT system for charge and discharge control system of the battery. The proposed system is a way of Flyback converters, and controls the algorithm used P&O control method and ATmega128.

• Proceedings of the KIEE Conference
• /
• 2006.04b
• /
• pp.383-385
• /
• 2006

This paper summarizes the results of these efforts by offering a photovoltaic system structure in 50kW large scale applications installed in Chosun University dormitory roof and simulation tool. This describes configuration of utility interactive photovoltaic system which generated power supply for dormitory. In this paper represent 50kW utility PV system examination result.

• Proceedings of the Korea Environmental Mutagen Society Conference
• /
• 2003.10a
• /
• pp.137-137
• /
• 2003

• Proceedings of the Korea Environmental Mutagen Society Conference
• /
• 2003.05a
• /
• pp.70-71
• /
• 2003

• 대한예방의학회:학술대회논문집
• /
• 2002.10a
• /
• pp.535-536
• /
• 2002

• Proceedings of the Korea Environmental Mutagen Society Conference
• /
• 2004.11a
• /
• pp.147-147
• /
• 2004

• Proceedings of the Korea Environmental Mutagen Society Conference
• /
• 2004.11a
• /
• pp.118-118
• /
• 2004

• Proceedings of the KIPE Conference
• /
• 2006.06a
• /
• pp.552-554
• /
• 2006

BIPV(Building Integrated PV) system can expect dual effects that reduce expenses for establishment of PV system by adding new function as outer covering material of building expect producing the electricity. But, there are many generation differences according to the exterior environmental facts(solar cell array, design and installation condition of interactive inverter system) Therefore, it is difficult to optimum design. Consequently in advance design system, we experiment 3kW BIPV(Building Integrated PV) generation. We concrete PV system efficient application of variable. BIPV system that is proposed in this paper, was established in Solar Energy research center of Chosun University, composed with system. This research is a basic study for application of building integrated photovoltaic system for building

• Journal for History of Mathematics
• /
• v.26 no.1
• /
• pp.1-9
• /
• 2013

It is well known that the development of mathematics in eastern Asia was based on Chinese mathematics. Investigating Chinese mathematics books that were brought into Chosun, we study how Chinese mathematics influenced Chosun mathematics. Chinese mathematics books were brought into Chosun in three stages, namely basic mathematics books in the era of King SeJong(1397-1450), Chinese mathematics books influenced by western mathematics in the 17th century and finally those with commentaries on mathematics of Song-Yuan era in the 19th century. We also study the process of their importations.