치조정 골흡수에 대한 platform switching이 미치는 영향

김도영,김태일,설양조,이용무,구영,류인철,정종평,한수부,Kim, Do-Young,Kim, Tae-Il,Seol, Yang-Jo,Lee, Yong-Moo,Ku, Young,Rhyu, In-Chul,Chung, Chong-Pyoung,Han, Soo-Boo 대한치주과학회 2008 Journal of Periodontal & Implant Science Vol.38 No.2

Purpose: Numerous studies have shown that crestal bone resorption around the implant was related to the location of the implant abutment junction(IAJ). Recently it was hypothesized that platform switching termed the inward horizontal repositioning of the IAJ might limit bone resorption around the implants. The purpose of this clinical study was to evaluate the effect of platform switching on crestal bone resorption. Materials and Methods: The crestal bone loss of 65 external hex implants in 26 patients were radiographically measured at crown placement and follow-up examinations. 23 standard implants(non-platform switching group, NP) were connected with the matching abutments and 42 wide implants(platform switching group, PS) were connected with the 1 mm smaller diameter abutments. Results: There was significant difference of crestal bone loss between NP group and PS group. For implants in the NP group, mean crestal bone loss was $1.18{\pm}0.68\;mm$ at crown placement and $1.42{\pm}0.41\;mm$ at follow-up. The meal bone loss in PS group was $0.47{\pm}0.52\;mm$ at crown placement and $0.60{\pm}0.65\;mm$ at follow-up. When the crestal bone changes according to placement depths of implants were compared, subcrestal position of IAJ had a significantly less bone loss in PS group, but it was not in NP group. Conclusion: Within the limits of the present study, it was concluded that platform switching technique might decrease crestal bone loss around the implants. Additionally, when the IAJ of implant was placed 1 mm deeper in the alveolar bone, the effect of platform switching on bone loss was enhanced.

Wave Climate at Hong-do and Mara-do Sea Areas

김도영,Kim Do Young 한국해양환경·에너지학회 1998 한국해양환경·에너지학회지 Vol.1 No.2

이 논문에서는 홍도와 마라도에서의 파랑의 통계적 특성을 살펴보았다. 두 지역에서의 스펙트럼법과 시계열에서 얻은 유의파고를 이용하여 파고주기결합분포를 얻었으며 여러 가지 통계적인 특성을 살펴보았다. 주파수의 대역폭이 협대역이 아닌 경우에 개별 파고분포에 롱기히긴스가 제안한 수정레일리분포를 사용할 수 있다. 그러나 이 분포함수는 경험상수를 결정해야하는 불편함 때문에 널리 사용되지 않고 있었다. 본 논문에서는 수정레일리분포의 경험상수를 결정하는 간단한 방법을 제안하였다. 설계파고의 추정에서 서로 다른 분포함수 선택에 따른 영향은 크지 않다. 그러나 스펙트럼법과 시계열에서 얻은 파랑자료 사용에 따라서 한계파고의 추정치는 큰 차이를 보인다. In this paper the statistical characteristics of the waves at Hong-do and Mara-do are examined. The wane scatter diagrams of H/sub s/ and T/sub z/ and H/sub 1/3/and T/sub 1/3/ at two locations are given and various statistical characteristics of the ocean waves are examined. If the sea is not narrowband, the modified Rayleigh distribution introduced by Longuet-Higgins can be used for the individual wave height distribution. However the modified Rayleigh distribution has not been widely used due to the inconvenience of determining the empirical constant. In this paper a simple method to determine the empirical constant for the modified Rayleigh distribution is proposed. Extreme waves based on the measured wave data are estimated. There is no significant difference depending on the distribution functions. However the estimations of the extreme waves from H/sub s/ and H/sub 1/3/ show considerable difference.

광검출기 응용을 위하여 스퍼터된 미세결정 SiGe 박막성장 연구

김도영,김선조,김형준,한상윤,송준호,Kim, Do-Young,Kim, Sun-Jo,Kim, Hyung-Jun,Han, Sang-Youn,Song, Jun-Ho 한국전기전자재료학회 2012 전기전자재료학회논문지 Vol.25 No.6

For the application of photo-detector as active layer, we have studied how to deposit SiGe thin film using an independent Si target and Ge target, respectively. Both targets were synthesized by purity of 99.999%. Plasma generators were generated by radio frequency (rf, 13.56 MHz) and direct current (dc) power. When Ge and Si targets were sputtered by dc and rf power, respectively, we could observe the growth of highly crystalline Ge thin film at the temperature of $400^{\circ}C$ from the result of raman spectroscopy and X-ray diffraction method. However, SiGe thin film did not deposit above method. Inversely, we changed target position like that Ge and Si targets were sputtered by rf and dc power, respectively. Although Ge crystalline growth without Si target sputtering deteriorated considerably, the growth of SiGe thin film was observed with increase of Si dc power. SiGe thin film was evaluated as microcrystalline phase which included (111) and (220) plane by X-ray diffraction method.

한국 영화 극적 구조 분석 및 새로운 지점에 대한 고찰

김도영(Kim Do Young) 한국영화학회 2008 영화연구 Vol.0 No.38

Syd Field understood the unique storylines and time ratios of mass commercial movie scenarios, and presented a form of dramatic structure which he called Paradigm. He assessed that favorable scenarios tally to such Paradigm. Of course, such argwnent is extreme, but the mention of the three chapters structure, which can be traced back to Aristotle's "Poetics", and arguments regarding the specific concept of Plot Point and elements of Paradigm, such as Mid-Point and Pinch, and their time placements are significant in movie scenarios. In reality, most mass commercial movies are known to follow such form of dramatic structure, and this is thought to be a universal storyline which existed even before Syd Field devised the Paradigm. Also, it is presumed that such Paradigm can be used in analyzing the dramatic structure of most Korean movies. The purpose of this study is to examine through actual examples whether the Syd Field Paradigm is applicable to the dramatic structure of Korean movies, to see if there are any points to revise or add to the dramatic structure of Korean movies based on the Paradigm, to investigate if the Paradigm is applicable to movies that were screened outside of the US before Syd Field presented the Paradigm, and to provide insight to other related questions. Precedent for such study can be found from Aristotle to Tolstoy. To examine whether the Syd Field Paradigm is able to provide basic principles and be a model for Korean movie scenarios, and also to investigate through specific examples the possibility of the Paradigm becoming the general storyline of movies is natural for a scholar. Hence, specific examples, such as the Korean movies Oldboy, You're My Sunshine!, and The Golden Age Of Young-Ja, and the Italian Movie Ladri Di Biciclette, have been thoroughly analyzed. As a result of this study, the following insights were discovered; first, the dramatic structure of Korean movies can be analyzed by the Syd Field Paradigm; second, based on the Syd Field Paradigm, there are possibly three supporting points that commonly exist in Korean movies; and third, the Paradigm is applicable to Italian and Korean movies that were screened before Syd Field devised the Paradigm. Such results of this study provide implications to not only scholars in universities, but also to people working in fields related to film production. After the decrease of screen-quota, reduction in production costs is one of the most significant problems faced by the Korean movie industry. The results can be important reference materials in not only the pre-production stage, but also in managing the filming schedule and cost distribution in the production stage. This is also true for the post-production stage. In addition, the results are considered to be important in the study of storylines, which is traditionally based around theories.

Suture anchor를 이용한 외측 반월판 연골 전방 뿌리 파열의 관절경적 치료 -증례 및 술기 보고-

김도영,유연식,이상수,정운섭,서은민,박승재,Kim, Do-Young,Yoo, Yon-Sik,Lee, Sang-Soo,Jeong, Un-Seob,Seo, Eun-Min,Park, Seung-Jae 대한정형외과스포츠의학회 2011 대한정형외과스포츠의학회지 Vol.10 No.1

반월상 연골판의 뿌리파열의 심각성이 인식되면서 이에 대한 적극적인 봉합이 필요하게 되었다. 특히 후각부 뿌리 파열에 대한 봉합 방법과 결과가 최근에 많이 보고되고 있다. 그러나 전각부 뿌리 파열에 대한보고는 아직 보고된 바 없으며 이에 저자들은 과거에 시행했던 원판형 연골의 부분 절제 후 발생한 의인성 뿌리 파열과 이로 인한 아탈구를 경험하였고 이를 봉합나사를 이용하여 정복하여 좋은 결과를 얻었기에 보고하는 바이다. As awareness of root tear of meniscus have been increased, it became necessary to have an intensive repair. Posterior horn tear, especially for a lot of repair methods and the results have been reported recently. The report of the anterior root tear has yet to be found. We recently encountered a patient with an iatrogenic meniscal subluxation caused by past experienced partial menisectomy for discoid meniscus. Thus, we repots the technique and clinical results of arthroscopic repair of subluxated lateral meniscus anterior root tear using suture anchor.

Antiglide 금속판을 이용한 족관절의 외과 골절의 치료

김도영,신주호,조원호,황현철,Kim, Do-Young,Shin, Joo-Ho,Cho, Won-Ho,Hwang, Hyun-Chull 대한족부족관절학회 2001 대한족부족관절학회지 Vol.5 No.1

Most of Danis-Weber type B fracture has an oblique fracture plane proximal posteriorly to distal anteriorly. In these cases, the lateral plate has become widely accepted. However some limitation to the use of the lateral plate exist. The plate must be bent accurately and the screws in the distal fragment must be unicortical to avoid penetration into the joint, predisposing it to poor fixation in the osteoporotic bone. In 1982, Brunner and Weber introduced the antiglide plate for fixation of the shaft oblique fracture of the distal fibula, but it has not widely used. The author reviewed 21 cases treated by antiglide plate fixation from March, 1995 to March, 1999 which could be follow-up more than 1 year. We analysed the result radiographically and clinically using Ankle-Hindfoot scale(100 % total) of the American Orthopedic Foot and Ankle Society. The results obrained were as follows: 1. All fracture were united at average 8 weeks clinically and radiographically. 2. According to the Ankle- Hindfoot scale, 8 cases were above 90 points, 11 cases were beet ween 80 and 89 points and two cases were below 80 points. 3. One case had an injury to intermediate dorsal cutaneous nerve.

태양전지응용을 위하여 MOCVD 방법으로 성장된 ZnO 박막의 기판온도에 따른 표면특성

김도영,강혜민,김형준,Kim, Do-Young,Kang, Hye-Min,Kim, Hyung-Jun 한국진공학회 2010 Applied Science and Convergence Technology Vol.19 No.3

우리는 MOCVD (metal organic chemical vapor deposition)법을 이용하여 DEZ (Diethylzinc)을 운송하는 Ar 유속과 reactant (반응물질)의 종류에 따른 ZnO 박막 증착을 연구하였다. Bubbler 시스템을 통하여 주입되는 Ar 유속에 의해 Zn 소스인 DEZ의 양이 조절된다. 산소 기체와 수증기는 산화를 위해 반응물질로 사용된다. 본 연구로부터 표면의 거칠기(surface roughness)는 반응물질의 종류와 DEZ Ar 유속에 관계되며 박막의 두께에 의존한다는 것을 알 수 있었다. 그러나 기판 온도는 산소를 반응물로 하는 상태에서는 표면 거칠기에 영향을 주지 못함을 알 수 있었다. 우리는 ZnO 박막이 90 sccm (Standard Cubic Centimeter per Minute)의 DEZ Ar 유속, 8 Pa의 수증기압, 그리고 $140^{\circ}C$의 기판 온도에서 39.16 mm의 가장 높은 거칠기를 가진다는 것을 확인할 수 있었다. 본 논문은 태양전지의 광 흡수층으로 사용가능한 ZnO 박막을 연구하였다. We report on the deposition of ZnO films using a metal organic chemical vapor deposition (MOCVD) as a function of pushing pressure and kind of reactant such as oxygen gas and water A diethylzinc (DEZ) is supplied and controlled by Ar pushing pressure through bubbling system. Oxygen gas and water are used as reactant in order to form oxidation. We knew that the surface roughness is related in the process conditions such as reactant kind and DEZ flow rate. A substrate temperature has little role of surface roughness with $O_2$ reactant. However, $H_2O$ reactant makes it to increase over the 20 times. We could get the maximum roughness of 39.16 nm at the 90 sccm of DEZ Ar flow rate, the 8 Pa of $H_2O$ vapor pressure, and the $140^{\circ}C$ of substrate temperature. In this paper, we investigated the ZnO films for the application to the light absorption layer of solar cell layer.

만성 견봉하 및 삼각근하 점액낭염에 발생한 다발성 쌀소체의 수술적 치료: 증례 보고

김도영,황정택,이상수,서은민,조윤걸,Kim, Do-Young,Hwang, Jung-Taek,Lee, Sang-Soo,Seo, Eun-Min,Jo, Yoon-Geol 대한근골격종양학회 2013 대한골관절종양학회지 Vol.19 No.2

견봉하 및 삼각근하 만성 점액낭염에 발생한 다발성 쌀소체의 치료에 대해 고찰하였다. 다발성 쌀소체의 형성은 혈청음성의 류마티스 관절염 혹은 결핵과 자주 연관된 만성 점액낭염의 합병증으로 형성된다. 또한 이것은 윤활막 뼈연골종증과 영상학적 및 임상적으로 비슷한 양상을 보인다. 저자들은 만성 삼각근하 및 견봉하 점액낭염에 발생한 다발성 쌀소체가 있어 관혈적 수술을 통해 제거한 44세 남자를 증례 보고하고자 한다. 제거술을 시행한 지 16개월 후 견관절의 운동 범위 및 근력은 정상 범위에 있었고 기능도 만족스러웠다. 일반 촬영 및 초음파 검사에서 쌀소체의 재발은 없었다. 견봉하 및 삼각근하 만성 점액낭염에 발생한 다발성 쌀소체는 점액낭을 포함한 관혈적 절제술에 의해 성공적으로 치료 될 수 있었다. Multiple rice body formation is a complication of chronic bursitis frequently associated with seronegative rheumatoid arthritis or tuberculosis. It resembles synovial chondromatosis on imaging and clinically. We report on a pathologically diagnosed multiple rice body formation in subacromial and subdeltoid bursitis in a 44-year-old man who was treated by surgical removal and bursectomy. At 16 months after the removal, range of motion of affected shoulder was normal. No evidence of recurrence of rice body in plain X-ray and ultrasonography. Multiple rice body formed in chronic subacromial and subdeltoid bursitis could be treated with surgical removal and bursectomy successfully.

BIM 기반 시설물 유지관리를 위한 데이터 정의 - BIM기반 시설물관리 사례와 프로세스 분석 -

김도영,Kim, Do Young 한국BIM학회 2020 KIBIM Magazine Vol.10 No.3

The introduction of BIM technology is expanding not only in the field of design and construction, but also in the maintenance and use stage. In particular, researchers are looking to build a smart facility management system that integrates advanced IT technology and BIM. This study proposes the parts to be used and added to the BIM information, focusing on information generated and exchanged in the application case that is an issue during the current facility maintenance work by introducing the smart facility management technology and its use cases. The effectiveness of this proposal is compared with the scenario in which BIM-based facility safety management is applied and the current business scenario. In conclusion, the requirements for smart facility management are analyzed, and linkable parts between facility management tasks and BIM data that should be reflected in the facility management system are presented. In the maintenance phase, through the use case scenario, the facility management phase is subdivided according to the characteristics and contents of the work. In addition, information about the facilities required for each task is specified. Furthermore, it is examined whether BIM data and IT information can be linked with existing facility management systems. It is a process and guideline that can be provided to practitioners who want to introduce BIM and smart technology to facility management. It can define the required data items and levels according to the required information step by step based on the maintenance case.

양안식 영상을 이용한 신뢰도 기반의 다시점 영상 생성 방법

김도영,호요성,Kim, Do Young,Ho, Yo-Sung 한국스마트미디어학회 2013 스마트미디어저널 Vol.2 No.4

다시점 영상 시스템은 실감나는 3차원 입체감을 제공하고, 사용자로 하여금 자유로운 시점을 선택할 수 있게 한다. 하지만 한 번에 많은 양의 데이터를 전송하는 것은 어려운 일이므로 두 시점 흑은 세 시점의 영상을 전송하고, 깊이 정보를 이용하여 중간 시점의 영상을 합성하여 제공한다. 본 논문에서는 양안식 영상으로부터 고품질의 다시점 영상을 생성하는 방법을 제안한다. 먼저 스테레오 정합은 폐색 영역을 비롯한 모든 화소들의 정확한 변위 값을 찾을 수 없기 때문에, 배경 값을 이용하여 폐색 영역의 화소들을 처리하는 방법을 제안한다. 또한 합성 영상의 품질을 저하시키는 변위 영상 내의 물체 경계선 불일치 문제점 해결을 위해 결합형 양방향 필터를 적용한다. 마지막으로 불량 화소와 빈 공간때문에 발생하는 오류를 줄이기 위해 신뢰 영상을 이용하여 중간 시점의 영상을 생성한다. 실험을 통해 제안한 방법을 이용할 때 기존의 방법보다 합성 성능이 뛰어남을 확인했다. Multi-view video system provides both realistic 3D feelings and free-view navigation. But it is hard to transmit too huge data, so we send only two or three view images and generate intermediate view image using depth information. In this paper, we propose high quality multi-view image generation method from stereoscopic images. Since the stereo matching method does not provide accurate disparity values for all the pixels, especially at the occlusion area, we propose an occlusion handling method using the background pixels at first. We also apply a joint bilateral filtering to enhance the disparity map at the object boundary since it can affect the quality of synthesized images significantly. Finally, we can generate virtual view images at intermediate view positions using confidence map to reduce bad pixel and hole's error. Experimental results show the proposed method performs better than the conventional method.