http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
임형수,이창섭,이병채,이상호 朝鮮大學校 口腔生物學硏究所 2000 口腔生物學硏究 Vol.24 No.1
Trauma to the dento-alveolar complex can cause various problems. Some of the immediate problems are fracture, luxation and avulsion of teeth. Later complications of trauma include loss of vitality, pathologic root resorption, periapical infection, impaction and ectopic eruption. Ectopic eruption is a term which may indicate an abnormality of direction during tooth eruption of final tooth position. These case reports described the ectopic maxillary canine in which trauma, at early age, was the primary etiological factor. In case 1, the traumatic injury was occurred in primary anterior dentition, and in case 2, it occurred in early mixed dentition.
임형수,함경원,강현욱 대한법의학회 2013 대한법의학회지 Vol.37 No.2
Since the book “Final Exit: The Practicalities of Self-Deliverance and Assisted Suicide for the Dying”was published in 1991, there has been a worldwide increase in the number of cases of suicidal asphyxiation using helium gas. However, no domestic reports have been published thus far. Recently, we encountered a case of asphyxial suicide by inhalation of helium from inside a plastic bag. Subsequently, we reviewed the records of the Scientific Crime Analysis System of National Police Agency of Korea. There were 17 cases of helium-associated asphyxial suicides between January 1, 2000 and June 30, 2012. The average age of the deceased was 30.6years with a male to female ratio of approximately 5:1. Thirteen of 17 such deaths occurred in the victims’houses. In all cases, the method of death involved placing a plastic bag over the head with a hose attached to helium tanks. In 6 of 17 cases, the decedents had psychiatric disorders such as depression. As neither characteristic signs of death nor conventional methods for detecting helium gas exist, a thorough investigation of the death scene and the decedents’environment is extremely vital for confirming death due to helium asphyxiation.
상하악골의 전후방평가를 위한 ANB angle 과 Wits appraisal
임형수,김동필,이창섭,이상호 朝鮮大學校 口腔生物學硏究所 2000 Oral Biology Research (Oral Biol Res) Vol.24 No.2
ANB angle has been the indicator most commonly used in determining sagittal apical base relationship, irrespective of the fact that many distroting factors affecting the reliability of this angle have been reported. Growth rotation of the mandible and the anteroposterior position of Nasion in relation to point A and B may affect ANB angle. Wits appraisal was introduced for dissolving this problem. Because of the limitation and dependencies associated with ANB angle, the Wits appraisal was described and an alternative approach in determining the maxilly-mandibular apical base relationship. But, recently Wits appraisal was also affected by other environments. The aim of this study was comparing ANB angle and Wits appraisal respect to their's reliability and evaluating inherent problem of the Wits appraisal.
A Simple Scheme for Jitter Reduction in Phase-Differential Carrier Frequency Recovery Loop
임형수,권동승 한국전자통신연구원 2006 ETRI Journal Vol.28 No.3
A very simple and efficient scheme for jitter reduction is proposed for a carrier frequency recovery loop using phase differential frequency estimation, which estimates the current frequency offset based on the difference of the average phases of two successive intervals. Analytical and numerical results presented in this paper show that by simply overlapping the observation intervals by half for frequency offset estimations, both the steady-state and transient performances can be improved. The proposed scheme does not require any additional hardware circuitry, but results in improved performance even with reduced complexity.