소실 모형 주조법(EPC)의 스티로폼 패턴 성형을 위한 레이저 가공 기술

최명수,강경호,김재도 한국레이저가공학회 2000 학술발표대회 Vol.2000 No.2

위성 ATM망에 적합한 응용서비스 모형 개발

최명수,박남철,박형준,김경호,이성로 목포대학교 정보산업연구소 2000 情報産業硏究誌 Vol.8 No.-

The use of the Internet is much increased and the multimedia data such as voice and image should be processed in the Internet. The required characteristics of the communication networks for the 21-st century Internet are the fusion between communications and broadcasting, high speed, large capacity, high intelligence, and personalization. In realizing the characteristics mentioned above, the ATM is the only technique that can practically guarantee QoS and is the core technique in super high-speed service networks. In this paper, we will investigate the international study of the high-speed the satellite communication and then research plans for developing and providing optimum application services.

소아 만성 비용성 비부비동염의 임상양상 및 예후인자

최명수,박노선,박승구,이호윤,장동식,조진생,장재혁,이명신,유승민,손현진,김아영,조경자,김성배,이상욱,윤덕현 대한이비인후과학회 2013 대한이비인후과학회지 두경부외과학 Vol.56 No.10

Background and Objectives Chronic rhinosinusitis with nasal polyps is an uncommon pathology in the pediatric population and a challenging problem to otolaryngologists. In this study, we aimed to assess the clinical characteristics and postoperative results of children who underwent sinus surgery due to nasal polyps. Subjects and Method We retrospectively reviewed medical records of 45 pediatric patients who had sinus surgery from 2009 to 2012. We studied the relationship between clinical parameters and postoperative results. Results Forty-five patients (18 women and 27 men with an age range of 8 to 17 years) were treated surgically in our hospital. We found statistically significant correlation between the preoperative CT scores (p=0.043), the nasal obstruction symptom scores (p=0.032) and postoperative recurrence, but not between other parameters. Conclusion In this study, prognostic factors affecting the postoperative outcome were preoperative CT score and nasal obstruction symptom score.

치차-분지계를 갖는 비틀림 축계의 강제진동 해석

최명수 전남대학교 수산과학연구소 2009 수산과학연구소논문집 Vol.18 No.1

In this study, an algorithm for the forced vibration analysis of a torsional shafting with gear-branched system is formulated by the transfer stiffness coefficient method. Mter developing a computer program for obtaing frequecy response of a torsional shafting with gear-branched systems by using the transfer stiffness coefficient method, the program was used for obtaing frequecy responses of a hige speed boat with a four stroke diesel engine and a gear system and a low speed ship with a two stroke diesel engine and two gear systems. The accuracy of the present algorithm is confirmed by comparing with the results of the free vibration analyses for the same shaftings.

수종의 치과용 탄성인재의 정확도에 관한 연구

최명수,임주환,조인호,Choi, Myoung-Soo,Lim, Ju-Hwan,Cho, In-Ho 대한치과보철학회 1996 대한치과보철학회지 Vol.34 No.4

The accuracy and dimensional stability of impression materials are one of the most important factors for successful prosthodontic treatment. The purpose of this study was to evaluate the accuracy of several dental elastomeric impression materials used widely and clinically : Impregum-$F^{(R)},\;Permlastic^{(R)},\;Silascon^{(R)},\;Perfect^{(R)},\;Xantopren^{(R)}$. There have been many studies to evaluate the accuracy of impression materials. But it has not been decided yet, which method was most suitable for the evaluation of the accuracy. In this study, two resin teeth, #15 & 25, were prepared with rounded shoulder margin and 90 degree cavosurface angle. For the polysulfide rubber and polyether, the custom tray was made at least 24 hours prior to impression taking. For the silicone rubber materials, putty/wash impression technique was applied in taking impressions. Marginal openings of the castings on the master dies and prepared resin teeth were measured under stereomicroscope. The results were statistically analyzed and compared between tested impression materials. The results were as follows ; 1. In the overall accuracy of impression materials, polyether was the most accurate one, followed by polysulfide, additional silicone and condensation silicone. 2. On the first model pouring, condensation silicone had the largest discrepancies and there was significant difference compared to the other impression materials. 3. Polysulfide had the least discrepancies in the first model pouring, but showed larger discrepancies in the immediate second pouring than the first pouring. 4. On the immediate second pouring, the discrepancy of polyether was shown to be the smallest, while the largest one was additional silicone. 5. Polyether and polysulfide rubber using custom impression trays showed superior accuracy to silicone rubber, putty/wash impression technique.

Helicopter Landing Area 강도 계산서 개발

최명수,채명진,송영욱 대한조선학회 2012 대한조선학회 학술대회자료집 Vol.2012 No.5

With reference to helicopter landing condition, the request of structural evaluation in way of landing area has been increased by ship owners or charters, recently. Therefore, we have prepared and developed the calculating sheet by using of VBA (Visual Basic for Application) in order to easy assessment and prompt response for request. For your reference, structural members in way of helicopter landing area are evaluated by rule requirements and yard's practice according to different load cases which are mentioned on rules.

유한요소-전달강성계수법에 의한 2차원 곡선 보 구조물의 정적해석

최명수 한국동력기계공학회 2017 동력시스템공학회지 Vol.21 No.6

이 연구의 목적은 유한요소법의 모델링 기법과 전달강성계수법의 전달 기법의 조합인 유한요소-전달강성계수법을 2차원 곡선 보 구조물의 정적해석에 적용하는 것이다. 적용된 방법의 유효성을 확인하기 위해, 2개의 계산 모델을 선택하여 유한요소법과 유한요소-전달강성계수법 그리고 엄밀해로 해석한다. 2개의 계산 모델에 대한 유한요소-전달강성계수법의 정적해석 계산결과는 유한요소법의 결과와 동일하다. 곡선 보 요소의 요소 분할 수가 증가될 때, 양 방법에 의한 정적해석 계산 결과들은 엄밀해에 접근한다. 곡선 보 요소의 수가 증가할 때 계산 속도나 계산 메모리의 이용 측면에서 유한요소법보다 유한요소-전달강성계수법이 우수하다는 것을 확인하였다.

면역요법을 받고 있는 알레르기성 비염 환자에서의 혈청내 특이 IgE항체의 변화

최명수,박항,양훈식,김춘길,김훈 중앙대학교 의과대학 의과학연구소 1991 中央醫大誌 Vol.16 No.2

We know that clinical symptoms of allergic rhinitis are improved by immunotherapy but it is very difficult to manifest improvements scientifically. This study was performed to know which immunological parameters were clinically useful to evaluate the effect of immunotherapy. We measured teh clinical symptoms and the changes of serum level of the specific IgE antibody in the patients with allegic rhinitis who had received immunotherapy. The results were as follows. 1. The ratio of male to female was 1.5:1, and mean age was 18.0 years old, and the peak incidence among the age groups was the 2nd decades. 2. Ninety percents of the patients were improved clinically in 24months after beginning of immunotherapy. 3. The index of specific IgE antibodies decreased to 99.74±04.64% of pretreatment level in 1 year of immunotherapy and to 73.50±21.98% in 2 years of immunotherapy.

강성계수의 전달을 이용한 골조구조물의 정적해석

최명수,문덕홍,정하용 한국전산구조공학회 2003 한국전산구조공학회논문집 Vol.16 No.1

파양한 구조물의 정적해석에서 매트릭스구조해석법은 가상 폭넓게 사용되고 있는 강력한 해석기법이다. 그러나 이 방법으로 많은 수의 자유도를 갖는 구조물을 정확히 해석하기 위해서는 많은 계산 메모리와 빠른 처리 능력을 갖춘 고성능 컴퓨터를 필요로하는 취약점이 있다. 따라서 매트릭스구조해석법으로 많은 수의 자유노를 갖는 구조물을 퍼스널 컴퓨터 상에서 정확히 해석하기에는 곤란한 경우가 많다. 매트릭스구조해석법치 이러한 취약점을 극복하기 위하여, 저자들은 전달강성계수법을 제안한다. 전달강성계수법은 해석대상 구조물에 대한 강성계수의 전달에 기본 개념을 두고 있으am로 퍼스널 컴퓨터에 매우 적합한 해석기법이다. 본 논문에서는 골조추조물에 대한 정적해석 알고리듬을 전달강성계수법으로 정식화한다. 그리고 전달강성계수법, NASTRAN, 매트릭스구조해석법 그리고 해석해에 의한 계산 결과들의 비교를 통해 전달강성계수법의 유효성을 확인한다. In static analysis of a variety of structures, the matrix method of structural analysis is the most widely used and powerful analysis method. However, this method has drawback requiring high-performance computers with many memory units and fast processing units in the case of analyzing accurately structures with a large number of degrees-of- freedom. Therefore, it's very difficult to analyze these structures accurately in personal computers. For overcoming the drawback of the matrix method of structural analysis, authors suggest the transfer stiffness coefficient method(TSCM). The TSCM is very suitable to a personal computer because the concept of the TSCM is based on the transfer of the stiffness coefficient for an analytical structure. In this paper, the static analysis algorithm for frame structures is formulated by the TSCM. We confirm the validity of the TSCM through the comparison of computation results by the TSCM, the NASTRAN, the matrix method of structural analysis and the analytical solution.

Max Frisch의 작품「Andorra」에 나타난 眞實의 問題

최명수 대한신학교 1984 논문집 Vol.4 No.-

Die Farbsymbole "Weiβ" und "schwarz" signalisierendie heimliche U¨bereinkunft der ethischen Gegensa"tze "Wahrheit" und "Luge" im Andorranischen. Auch die Kirche Andorras ist nicht so weiβ, wie sie tut. Obwohl der Pater am Tode Andris mitschuldig fu¨hlte weil er die Wahrheit, die er ha¨tte bezeugen ko¨nnen, feige verschwieg, bekalgt er bei seiner Aussage nachher nur, daβ er lieblos und wenig bru¨derlich gehandelt habe, ohne jene Schuld, die ihm all allein geho¨rt, zu erwa¨hnen. Die Schwarzen sind Ausgeburten der in Andorra herrschenden Gesinnungstyrannei. AAndris Tod erlo¨st die widersinnige Einheit von Ohnma¨chtiger Freiheit ma¨chtiger Unfreiheit, nicht in ho¨herer Ru¨hrung der Betrachters;statt dessen lo¨sen sich endgu¨ltig die ungleichen Paarungern auf, so daβ Herrschaft und Fesselung unangefochten siegen. Das Stuck, "Andorra" kapituliert vor der Gewalt. Des Lehrers Wahrheitsliebe zersto¨lediglich Familienkreis, was sie auf dem "Platz von Andorra" nicht retten kann. Zersto¨rt wird nicht nur Andris Menschenwu¨rde, sondern fu¨hrt zum. Tod Andris, Denn "die Wu¨rde des Menschen besteht in der Wahl." Doch die Wahrheit besteht nicht in dem, was an und fu¨r sich ist, sondern in dem, was fu¨r andere bedeutet, namlich was die Umwelt, ihre Instituitionen, Interessen und Affekre als Wahrheit gesetzt haben. Auch der Pru¨fer mit dem untrglichen Auge sieht nicht die Naturhaftbiologosche, sondern die Gesellschaftliche Wahrheit. Auch er sieht nicht so. Andri herkommt, sondern das, was die anderen und schieβlich auch er selbst aus ihm gemacht haben. Die seelenlost Perfektion der Henkershelfers trifft die Wirklichkeit noch am genauesten: Jude ist nicht der, der "Ju¨disches Blut" in seinen Adern hat, sondern der, den seine Umwelt dazu stempein will.