• Journal of the korean academy of Pediatric Dentistry
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• v.26 no.4
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• pp.644-651
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• 1999

It is a relatively common clinical experience to see an unerupted maxillary central incisor. This phenomenon is apparent at the dental age of almost eight years and over. Among the possible cause for failure of eruption, ectopic development of the tooth germ is mentioned. This is not fully understood but trauma or periapical imflammation of primary predecessors is accepted. The case with no history of trauma may be impacted by the periapical imflammation of primary predecessors. For bringing into the tooth eruption and the continued normal root developement by the Hertwig's epithelial root sheath, there are early considered of surgical invention and orthodontic traction with removable appliance. We reported successful treatment for inverted maxillary central incisor with proper eruption and normal root developement by forced eruption using removable appliance. But further observation will be required to evaluate the final root developement state and amount of keratinized attachment gingiva.

• Journal of the Korea Institute of Military Science and Technology
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• v.26 no.1
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• pp.102-112
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• 2023

This research mainly focuses on the transport and dispersion of chemical agent plume according to the Lagrangian Puff Model and Lagrangian Particle Model of NBC_RAMS(Nuclear, Biological, Chemical Reporting And Modeling S/W System). NBC_RAMS was developed with the purposes of estimating the fate of Chemical, Biological, and Radioactive(CBR) agent plumes and evaluating damages in the Republic of Korea. First, it calculates the local weather pattern, i.e. wind speed, wind direction, and temperature, by considering the effects of land uses and topography. The plume behaviors are calculated by adopting the Lagrangian Puff Model(LPFM) or Lagrangian Particle Model(LPTM). In this research, we assumed a virtual chemical agent exposure event in a stable atmospheric condition during the summer season. The plume behaviors were estimated by both LPFM and LPTM on the used area(urbanized and dry area) and the agricultural land. The higher heat flux in the used area led to stronger winds and further downward movement moving of the chemical agent than the farmland. The lateral dispersion of the chemical plume was emphasized in the Lagrangian Puff Model because it adopted Gaussian distribution.

• Proceedings of the KSR Conference
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• 2011.05a
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• pp.1420-1424
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• 2011

When it developes the railway system, safety is one of the most important and necessary things. SCADE SUITE has been used in many systems, like plane, transportation, nuclear power, etc, who have high priority to safety. This document introduces where SCADE SUITE has been used and describes how develope safety-critical system with SCADE.

• Magazine of the Korea Concrete Institute
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• v.26 no.2
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• pp.29-33
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• 2014

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.05a
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• pp.727-728
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• 2010

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2003.10a
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• pp.106-106
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• 2003

• Proceedings of the KAIS Fall Conference
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• 2011.05b
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• pp.815-817
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• 2011

본 논문에서는 로드셀을 이용한 Weighting 시스템 개발 및 비료량 조절시스템 개발을 통하여 주어진 경작면적에 주어진 양의 비료를 균일하게 살포할 수 있는 친환경 변량제어 비료살포기를 개발하고자 하였다.

• The Korean Journal of Air & Space Law and Policy
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• v.14
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• pp.175-206
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• 2001

• 제어로봇시스템학회:학술대회논문집
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• 1988.10a
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• pp.482-487
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• 1988

A sequential-clustered integrator based on GEAR method is developed for the purpose of dynamic simulation of chemical processes. And a single simulator structure capable of employing various integration approaches is designed and its efficiency and flexiblity is evaluated. Sequential integration method is superior to simultaneous method for the process without recycle, but simultaneous method is very powerful for the coupled process with recycle.

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2011.06a
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• pp.288-288
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• 2011