대학태권도선수의 실수인식과 의도적 연습 및 인지된 경기력의 관계

최봉준(Choi, Bong Jun),원세종(Won, Se-Jong) 세계태권도문화학회 2022 세계태권도문화학회지 Vol.13 No.2

The purpose of this study was to investigate the relationship of perception of error, deliberate practice, and perceived performance of University Taekwondo Athletes. To this end, 321 Taekwondo athletes (male 207, female 114) participated in this study. Collected data were analyzed by descriptive statistics, correlation, and multiple regression using SPSS 22.0 version. The results revealed as follow. First, learning from error, error risk taking, and thinking about error had a positive effect on deliberate practice. Second, learning from error and thinking about error had a positive effect on performance satisfaction while error risk taking and thinking about error had a positive effect on will to win. Third, deliberate practice had a positive effect on performance satisfaction and will to win. In conclusion, athletes’ perception of error is key component to enhance deliberate practice and perceived performance. Furthermore, deliberate practice was also identified as a variable that improves perceived performance.

GG-38 : Minimal invasive surgery (LESS) for huge cystic adnexal tumors in whole abdomen

( In Young Choi ),( Ji Hye Lee ),( Mi Hyun Park ),( Ji Kwoun Park ),( Jeong Kyu Shin1 ),( Won Jun Choi1 ),( Soon Ae Lee ),( Jong Hak Lee ),( Won Young Paik ) 대한산부인과학회 2014 대한산부인과학회 학술대회 Vol.100 No.-

Laparoendoscopic single-site surgery (LESS) is helpful if not an evidence of suspicious malignancy in huge adnexa tumors. This approach might be reasonable alternative to conventional laparoscopic surgery. We report two cases with LESS for huge cystic adnexal tumors in whole abdomen. A 58 years old multigravida woman in menopause underwent removal of a huge cystic adnexal mass that occupied her entire abdomen by LESS.(ca.5200ml aspiration) A 15 years old single nulligravida woman had a huge cystic adnexal tumor in whole abdomen reaching to the level of the xyphoid process. A needle through the transumbilical single port was inserted directly under the mass. Subsequently, 8000 ml of cystic fluid was aspirated without spillage.

PC-to-PC 유형의 인터넷폰 사설교환시스템의 설계 및 구현

최준원,최재원 경성대학교 공학기술연구소 2003 공학기술연구지 Vol.10 No.-

최근 컴퓨터와 통신 기술의 발전으로 인해, 멀티미디어를 이용한 여러 가지 응용이 출현하고 있다. 그중에 인터넷의 발전과 함께 많은 성장을 하고 있는 인터넷폰이 핵심이 되고 있다. 본 논문에서는 교환시스템의 호제어와 인증 및 각종 부가서비스를 설계 구현하였다. 향후 다른 정보통신 교환시스템의 개발에 직접적으로 활용 가능함으로 그 기술적인 가치가 높다고 판단되며, PSTN망과 LAN 통신망이 결합되어 하나의 통신망을 구축하여 전화교환과 컴퓨터 통신이 가능하다면 기업의 설비투자에 있어 많은 비용절감이 이루어질 것이다. In due to the advent of recently the computer and communicate technology growth, make good use of variety of application our work are changing almost every day. Among the advent of the computer and communicate, the internet technology growth with development of Internet Telephony is the point. The subject of a thesis is a plan for the Call Control of PBX ,login and variety service added. It makes that PSTN and LAN are combined as one network. So, if it can do the PBX and Computer Communication will cut down on expense in plant investment of company.

레이저 형광법에 의한 프로세싱 플라즈마중의 입자 계측에 관한 연구

최상태,이광식,하장호,전용우,박원주 嶺南大學校 工業技術硏究所 1998 工業技術硏究所論文集 Vol.26 No.2

Armorphous materials have various structures that is determined by different manufacturing conditions. That is, the photoelectric characteristics of films manufactured by different conditions are totally different. The growth mechanism of a-Si should be understood in order to controll the characteristics and structures of these kinds of materials. In this study, we try to elucidate the particle behaviours in a processing plasma using a low pressure glow discharge. And because of difficulties understanding discharge mechanism, we have done the processing so far depending on the experimental methods that compare the thin film produced by varing discharge parameter with the results of micromachinary. But, this has a limitation in the development because it regards the plasma as a blackbox. Therefore, because it needs to observe the discharge parameters and plasma background gas systematically, we try make sure that the particle behaviours be made clean by using laser fluorescence method which is predominant in a phenomina measurement and special resolution.

마이크로머시닝을 이용한 Bump형 Probe Card의 제조

최원익,김용대,심준환,이종현 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

Probe card is the most important part of testing IC chips. This work was related to silicon vertical probe card which enabled to simultaneously test multiple semiconductor chips. We presented Bump-type vertical probe card. It was fabricated by dry etching using RIE technique, isotropic etching, and bulk-micromachining on SDB wafer. The process used in this work was very simple and reproducible, which had good controllability in the probe card dimension and spacing. It is expected that the fabricated probe card can reduce testing time, can promote productivity and enables bum-in test.

CT사진을 이용한 한국인의 C형 치근관의 분포에 대한 연구

전록원,허경회,이원진,허민석,이삼선,최순철 대한구강악안면방사선학회 2009 Imaging Science in Dentistry Vol.39 No.2

Purpose : To investigate the incidence and prevalence of C-shaped root canal using computed tomographic images of head and neck in Korean population. Materials and Methods : Regardless of each examination purpose, randomly selected 268 examples which have serial axial computed tomographic images with 8 normal molars in maxilla and mandible were selected and investigated. Defined C-shaped root canal and we could get 82 proper image examples in view of this definition. These were detected and investigated of incidence and prevalence of C-shaped root canal. Results : C-shaped root canals were found in 82 examples among 268 (30.6%) and 147 teeth. They were only found on molar area, and the highest incidence was 37.41% of left mandibular second molars, and the lowest was 2.04%of right maxillary second molars. On prevalence of tooth position, mandibular second molar was the highest, 65% of C-shaped root canal teeth and maxillary second molar was 6% the lowest. Conclusion : 31% of randomly selected CT images no considering check-up reason have C-shaped root canals. The C-shaped root canals of mandibular second molar are found most frequently and they are also detectable on maxilla. On Korean population, C-shaped root canals are one of conditions that have to concern with dental treatment for it appears at a high prevalence relatively.

B-ISDN 기반의 멀티미디어 통신을 위한 통합형 IP-PBX 시스템 구현

최준원,최재원 경성대학교 공학기술연구소 2003 공학기술연구지 Vol.S2 No.2

최근 컴퓨터와 통신 기술의 발전으로 인해, 멀티미디어를 이용한 여러 가지 응용이 출현하고 있다. 그 중에 인터넷의 발전과 함께 많은 성장을 하고 있는 인터넷폰이 핵심이 되고 있다. 시대의 요구에 따라 단말시스템이 유선으로 무선으로 바뀌고 이으며, 각 단일망들의 통합화가 요구되고 있다. 현 기업에서 통신 인프라를 구축하기위해 사내교환망과 LAN 통신망을 가지며 투자되는 비용을 줄이고자 한다. The internet phone has been divided into types of PC-to-PC, PC-to-Phone, and Phone-to-Phone so far since its appearance first in 1995. However, compared to the 1990s, a kind of a terminal for communication is now being increased, and particularly, the traffic is being changed from wire to wireless after the appearance of a cellular phone. Accordingly, a type of an internet phone also needs to be changed or integrated. For the purpose of economy, stability and efficiency, it will need to integrate several single networks into one.

수종의 저장용액에서 치주인대세포의 생존율 비교

최원경,최병재,최형준,이종갑 大韓小兒齒科學會 1999 大韓小兒齒科學會誌 Vol.26 No.2

치아탈구 발생시 사고 현장에서 쉽게 구할 수 있는 저장용액을 이용하여 치주인대세포의 생존율을 비교해보고자 치주인대세포를 10%FBS함유 α-MEM에서 배양한 후 α-MEM에서 저장한 군을 대조군으로 하고 동일한 조건하에서 저온살균된 우유군, 멸균된 생리적 식염수군, 비자극성 타액군, 건조된 상태로 방치한 군을 실험군으로 하여 25℃ 실온에서 세포 배양 30, 60, 90, 120, 180분 후에 각 군에 대해 MTTassay를 시행하여 다음과 같은 결론을 얻었다. 1. 각 조사시점에서 실험군간의 비교에서는 모두 유의성있는 차이를 보였으며 저온살균된 우유군에서 치주인대세포의 생존율이 가장 높았고, 멸균된 생리적 식염수군, 비자극성 타액군, 건조된 상태로 방치한 군 순으로 점차 감소하였다.(P<0.05) 2. 각 실험군내에서 조사시점간의 비교에서는 치주인대세포의 생존율이 시간이 경과함에 따라 유의성있게 감소하였으나(p<0.05). 저온살균된 우유군에서 90-120분 경과 사이. 멸균된 생리적 식염수군에서 60-90분과 120-180분 경과 사이에서는 유의성있는 차이는 없었다.(P>0.05) 이상의 결론을 종합해볼 때 외상으로 인한 치아탈구 발생시 저장용액으로 HBSS가 추천되고 있으나 사고 현장에서 쉽게 구할 수 있고 치주인대세포의 생활력 보존에도 유리한 저온살균된 우유에 탈구된 치아를 담가오도록 추천할 수 있겠다. Preservation of the remaining periodontal ligament cells on an avulsed tooth is very important to the successful outcome of replantation. HBSS is recommended as the most suitable storage medium for the avulsed tooth that cannot be replanted immediately. But their availability near the site of an accident is doubtful. The purpose of this in vitro study was to compare periodontal ligament cells stored in different storage media obtained easily on th spot. Human periodontal ligament cells were collected from the premolar teeth extracted for orthodontic treatment. Cells were cultured in α-MEM culture medium containing 20% FBS, at 37℃ 100% humidity, in a 5% CO₂2 incubator. Cells were cultured in 96 well culture plate, 5×10⁴cells per well with α-MEM and incubated for 24 hours.After discarding the medium, those cells were cultured in α-MEM contained with 10% FBS, pasteurized milk, sterilized saline, unstimulated saliva and bench-dried state at 25℃ room temperature for 30, 60, 90, 120, 180 minutes respectively. And then each group was measured using MTT assay. The results were as follows. 1. Between the group of each time, there was statistically significant difference. Periodontal ligament cells viability was highest in pasteurized milk and was reduced stepwisely in sterilized saline, unstimulated saliva and bench-dried state(p<0.05) 2. between the time of each group, there was statistically significant difference (p<0.05) but was no statistically significant difference at 90 - 120 minutes in pasteurized milk and at 60 - 90 minutes and 120 - 180 minutes in sterilized saline(p>0.05). In conclusion, HBSS as storage medium of an avulsed tooth is not practical on the spot. Insteadily pasteurized milk can be recommended to maintain the periodontal ligament cells viability.

CGI 프로그램에서 클라이언트와 서버의 자동화된 상태정보 전달

최준용,유진호,장종표,방만원 木浦大學校 情報産業硏究所 1997 情報産業硏究誌 Vol.5 No.-

The HTTP Protocol composed of WWW's client/server model is unconnected and not keep state, so, there is one connection for one request. In this condition, it has no guarantee to memory which is needed in sequential processing, and HTTP Protocol has no choices to transfer the information from client to server's CGI or the information exchange. This paper uses the word 'key' instead of this 'state information'. We studied the key which creates automatically the HTML document for data search hierarchically in WWW environment and to confirm applied this to multimedia order and sale system of agricultural and marine products.

기저질환이 없는 사람에서 발생한 Campylobacter fetus에 의한 재발성 심내막염 1예

전재범,정진원,김성혜,송문희,오형철,안성기,최상호,김남중,김양수,우준희,류지소 대한감염학회 2004 감염과 화학요법 Vol.36 No.6

C. fetus 심내막염은 드물게 발생하는 질환으로 주로 면역능이 저하된 환자에서 발병하고 대동맥판을 침범하는 경우가 많으며 적절한 치료가 되지 않을 경우 치사율이 높다. 저자들은 기저질환이 없던 69세 남자에서 C. fetus 심내막염을 경험하였기에 문헌고찰과 함께 보고하는 바이다. 환자는 발열로 내원하여 시행한 혈액배양 검사상 C. fetus가 동정되었고 경식도 초음파 검사상 삼첨판에 증식증이 발견되어 심내막염 진단하에 ceftriaxone에 이어 meropenem으로 총 4주간 항생제를 투여받고 호전되었다가 한달 후 다시 재발하였고 판막부전 소견 진행하여 삼첨판 치환술을 시행받고 전신상태 호전되어 퇴원하였다. Campylobacter fetus is a rare cause of endocarditis. To date, only about 30 cases of C. fetus endocarditis have been reported mainly in the elderly with chronic underlying illnesses. Most cases showed tendency to involve aortic valve. This report describes a case of native tricuspid valve infective endocarditis in a 69-year-old man without any underlying disease. Despite adequate antibiotic therapy for 4-weeks, endocarditis recurred and leading to surgical valve replacement.