하악 제3대구치가 하악 우각부 골절에 미치는 영향

조성필,이재훈,김철환,Cho, Sung-Pil,Lee, Jae-Hoon,Kim, Chul-Hwan 대한악안면성형재건외과학회 2006 Maxillofacial Plastic Reconstructive Surgery Vol.28 No.1

Mandibular fractures have higher incidence rate compared to facial bone fractures because of relatively prominent form. Specially, mandibular angle fractures were known as common fracture site because of morphological anatomic structure. The mandibular third molar appears to be the most frequent impacted tooth. The mandibular third molar have influence on mandibular angle fractures according to it's eruption state. Also, the mandibular angle fracture including the third molar may influence on post operative infection whether the third molar is in impacted or extracted state when reduction of fracture site is operated. The presence or absence and degree of impaction of the mandibular third molar were assessed for each patient and were related to the occurrence of the mandibular angle fracture. The extraction or non extraction of the mandibular third molar were related to the occurrence of the post operative infection in the reduction of mandibular angle fractures. In the presence of mandibular third molar, the possibility of mandibular angle fractures were relatively common. When viewing the mandibular third molar at occlusal plane, the possibility of mandibular angle fractures were high in the class C group. The possibility of mandibular angle fractures were high in the mesial angulation and partial impaction. There was a statistically significant difference(P<0.05). In complete erupted mandibular third molar, the possibility of post operative infection occurs quite often, but there was no statistical significant difference(P>0.05). In the extracted or non extracted of mandibular third molar, the post operative infection showed no statistical significant difference(P>0.05). With the results mentioned above, mandibular third molar was significantly more susceptible to mandibular angle fracture. In the reduction of mandibular angle fracture, it was recommended that mandibular third molar should be extracted especially in case of pericoronitis, periodontitis and other infections.

하악 제3대구치가 하악 우각부 골절에 미치는 영향

조성필,이재훈,김철환,Cho, Sung-Pil,Lee, Jae-Hoon,Kim, Chul-Hwan 대한악안면성형재건외과학회 2006 Maxillofacial Plastic Reconstructive Surgery Vol.28 No.2

Mandibular fractures have higher incidence rate compared to facial bone fractures because of relatively prominent form. Specially, mandibular angle fractures were known as common fracture site because of morphological anatomic structure. The mandibular third molar appears to be the most frequent impacted tooth. The mandibular third molar have influence on mandibular angle fractures according to it's eruption state. Also, the mandibular angle fracture including the third molar may influence on post operative infection whether the third molar is in impacted or extracted state when reduction of fracture site is operated. The presence or absence and degree of impaction of the mandibular third molar were assessed for each patient and were related to the occurrence of the mandibular angle fracture. The extraction or non extraction of the mandibular third molar were related to the occurrence of the post operative infection in the reduction of mandibular angle fractures. In the presence of mandibular third molar, the possibility of mandibular angle fractures were relatively common. When viewing the mandibular third molar at occlusal plane, the possibility of mandibular angle fractures were high in the class C group. The possibility of mandibular angle fractures were high in the mesial angulation and partial impaction. There was a statistically significant difference(P<0.05). In complete erupted mandibular third molar, the possibility of post operative infection occurs quite often, but there was no statistical significant difference(P>0.05). In the extracted or non extracted of mandibular third molar, the post operative infection showed no statistical significant difference(P>0.05). With the results mentioned above, mandibular third molar was significantly more susceptible to mandibular angle fracture. In the reduction of mandibular angle fracture, it was recommended that mandibular third molar should be extracted especially in case of pericoronitis, periodontitis and other infections.

Penicillium diversum 으로부터 두 chitin synthase 유전자 절편의 분리

조성필,이상근,이동훈,배경숙,박희문,맹필재 ( Seong Pil Cho,Sang Keun Lee,Dong Hun Lee,Kyung Sook Bae,Hee Moon Park,Pil Jae Maeng ) 한국균학회 1997 韓國菌學會誌 Vol.25 No.3

딥러닝을 이용한 탄소제로 미래비행체의 구조 건전성 모니터링

조성필(Seongpil Cho) 항공우주시스템공학회 2023 항공우주시스템공학회 학술대회 발표집 Vol.2023 No.05

국내 복합화력발전의 대기오염 방지시설

조성필 ( Sung Pill Cho ) 한국공업화학회 2022 공업화학전망 Vol.25 No.2

LNG를 연소하는 복합화력발전소는 석탄화력발전소에 비해 대기오염물질 배출량이 적어 친환경적이라고 할 수 있으나, 질소산화물이 여전히 배출되고 있고, 최근에는 가스터빈 기동시에 발생하는 황연 유발물질, 일산화탄소, 총탄화수소가 민원의 대상이 되고 있다. 또한 온실가스인 CO₂ 역시 연소과정에서 불가피하게 발생하는 물질이다. 친환경적인 에너지로 거듭나기 위해 산업계에서 이들 대기오염물질을 적정하게 처리하기 위한 노력이 진행되고 있다. 본 고에서는 복합화력발전소에 적용된 상용화 기술에 대해 현황을 설명하고 향후 적용될 기술에 대한 연구개발 사항에 대해 소개하고자 한다.

다중 센서융합을 이용한 다목적 소형 무인기의 상대항법 가능성 연구

조성필(Seongpil Cho) 항공우주시스템공학회 2023 항공우주시스템공학회 학술대회 발표집 Vol.2023 No.10

IT 거버넌스 통제에 대한 조직원의 심리적 반발요인에 대한 연구

조성필(Cho, Sung-Phil),안종창(Ahn, Jong-Chang) 한국산학기술학회 2013 한국산학기술학회논문지 Vol.14 No.6

본 연구는 다양한 형태의 조직들에서 IT 거버넌스와 관련된 통제에 대해 조직원들의 개인기기 사용 확산에 따른 반발 심리의 분석에 초점을 둔다. 이를 위해 IT 거버넌스 통제와 관련된 선행 연구, 조직원의 반발 심리에 대 한 척도 및 기대이론을 바탕으로 연구 모형을 구성하였다. Hong의 심리적 반발 척도, 기대이론의 보상 정도, 조직에 서의 직급이나 조직 규모에 따라 조직원들의 IT 통제에 대한 반발요인과 태도의 통계적 유의성을 검증할 수 있었다. 이를 통해 IT 거버넌스를 통한 경영목표 달성을 위한 통제와 조직원 반발요인에 대한 체계적 분석을 통한 분석 틀 을 제시하고 실무적으로도 조직의 IT 거버넌스 통제에 대한 시사점을 얻을 수 있다. The purpose of this paper is to focus on the analysis of organizational members’ psychological reactance factors on IT governance control in various types of organizations by the use spreading of individual devices. For this, a model was made based on previous researches related to IT governance control, the scale of organizational members’ psychological reactance and the expectancy theory. The statistical significance of organizational members’ psychological reactance factors and attitude on IT governance control was tested by the Hong's psychological reactance scale, the level of reward according to expectancy theory, the position in organization and organization size. This study shows controls for achieving the managerial goal of company and an analytical framework generated by analyzing systematically organizational members’ psychological reactance factors by IT governance and managerial implications on IT governance control are also presented.

최소 제곱 가속 기반의 적응 디지털 필터를 이용한 두피 뇌전도에서의 심전도 잡음 추정 및 제거

趙盛必(Sung Pil Cho),宋美惠(Mi Hye Song),朴鎬東(Ho Dong Park),李景中(Kyoung Joung Lee) 대한전기학회 2007 전기학회논문지 Vol.56 No.7

A new method for detecting and eliminating the Electrocardiogram(ECG) artifact from the scalp Electroencephalogram (EEG) is proposed. Based on the single channel EEG, the proposed method consists of 4 procedures: emphasizing the R-wave of ECG artifact from EEG using the least squares acceleration(LSA) filter, detecting the R-wave from the LSA filtered EEG using the phase space method and R-R interval, generating the delayed impulse synchronized to the Rr-wave and elimination of the ECG artifacts based on the adaptive digital filter using the impulse and raw EEG. The performance of the proposed method was evaluated in the two separating parts of R-wave detection and, ECG estimation and elimination from EEG. In the R-wave detection, the proposed method showed the mean error rate of 6.285(%). In the ECG estimation and elimination using simulated and/or real EEG recordings, we found that the ECG artifacts were successfully estimated and eliminated in comparison with the conventional multi-channel techniques, in which independent component analysis and ensemble average method are used. From this we can conclude that the proposed method is useful for the detecting and eliminating the ECG artifact from single channel EEG and simple for ambulatory/portable EEG monitoring system.

스마트TV의 보안 문제와 소비자의 구매의도에 관한 연구

조성필(Sung-Phil Cho),이기혁(Gi-Hyouk Lee) 한국산학기술학회 2017 한국산학기술학회논문지 Vol.18 No.7

스마트TV는 운영체제를 탑재하고 인터넷 기능과 결합된 TV로서 다양한 앱과 콘텐츠의 이용이 가능하며 개인화, 양방향적인 서비스를 제공할 수 있다. 그러나 이와 같은 스마트TV의 인터넷 연결성은 여러 보안 취약점들이 존재하며 이로 인해 큰 개인적 및 사회적 피해가 야기될 수 있다. 이에 현재보다 더욱 보안이 강화된 스마트TV 개발이 요구되는 시점이며 이에 따라 본 연구에서는 UTAUT2 모델을 적용하여 보안이 강화된 스마트TV에 대한 소비자의 구매의도를 분석하고자 한다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, UTAUT2 모델에서 주요변수인 성과기대, 사회적 영향, 촉진조건 및 가격가치가 소비자의 구매의도에 유의미한 영향을 주는 것을 발견하였다. 둘째, 노력기대는 구매의도에 유의미한 영향을 주지 않았다. 셋째, 소비자의 구매의도에 영향을 미치는 요인 중 사회적 영향에서만 성별 조절효과가 발견되었다. 연구 결과를 토대로 볼 때 소비자들은 보안성이 강화된 스마트TV 구매에 영향을 미치는 요인으로 사회적 영향이 가장 높은 영향력을 보이고 있다. 따라서 구매의도 향상을 위해서는 무엇보다 스마트 TV 보안성 강화에 대한 필요성과 중요성에 대한 홍보 활동의 확대가 요구되고 있으며, 사용상의 편리함을 인식할 수 있을 정도의 기술적 보완이 요구되고 있다. Smart TVsareequipped with an operating system and combined with internet functionality.Theycan use various apps and contents, and provide personalized and interactive services. However,the Internet connectivity of smart TVs has several security vulnerabilities that can cause significant personal and social harm. Therefore,it is necessaryto develop a smart TV with a higher level ofsecurity than is currently available. In this study, we analyze consumers" purchase intention for smart TVs with security reinforcement by applying the UTAUT2 model. The results are as follows. Firstly, it was foundthat performance expectancy, social influence, facilitating conditions and price value, as important variables under the existing UTAUT2 model,havesignificant effects on purchase intention. Secondly, effort expectancy didnot have a positive impact on purchase intention. Thirdly, there was a moderating effect of gender on social influence. According to the results of this study, social influence has the most powerful effect on the purchase intention of smart TVs with security reinforcement. Therefore, in order to improve the purchase intention of smart TVs, it is necessary to expand the publicity activities designed to promote the necessity and importance of reinforcing the security of smart TVs and make themeasier to use.

수변전설비의 표준화에 관한 연구 : 지하철 역사전기설비를 중심으로

조성필(CHO SUNG-PIL),강차녕(KANG CHA-NYEONG),김학련(KIM HAK-LYUN) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-

In our modern society, such electric facilities as lighting, elevators, water supplies, drainages, waste water treatments and landscape lighting are being more enlarged, diversified and technology-intensive owing to outstanding technological development, while they require reliable and safe electricity. On the other hand, as more electric energy is consumed with more complicated systems operated, any accident from a personal electric system is likely to have wider spreading effects. In particular, the electric receivers and transformers installed for such public facilities as subway stations require highest safety, reliability and economy, but such requirements tend to be less considered than such financial requirements as budget conditions, much less their safety and reliability. In such a circumstance, this study was aimed at suggesting some standards for safe, reliable and economic subway electric systems in terms of their scale, location and uses. Specifically, this study put forwards the ways to optimize and standardize the electric systems including receivers and transformers for subway stations in order to make them safer, more reliable and economic.