양측성 성대 마비로 오인된 피열간 반흔 1예

신동혁,김용운,이용식,Shin, Dong-Hyuk,Kim, Yong Won,Lee, Yongsik 대한후두음성언어의학회 2014 대한후두음성언어의학회지 Vol.25 No.1

The patient suffered cardiac arrest 8 months before presentation. She has been suffering hoarseness and exertional dyspnea and nocturnal stridor. Upon flexible laryngoscopy, her vocal cords showed no motion and fixed in paramedian position. There was no causal finding on neck CT. EMG showed some muscular activity. Under the suspicion of crico arytenoid fixation, we performed suspension laryngoscopy, and found the arytenoid cartilage was fixed with short and stout scar, which was removed with scissors. Just after surgery she regained her voice and respiration.

황해 가로림만 조간대 표층퇴적물의 이동경로

신동혁,이희일,한상준,오재경,권수재,Shin, Dong-Hyeok,Yi, Hi-Il,Han, Sang-Joon,Oh, Jae-Kyung,Kwon, Su-Jae 한국해양학회 1998 바다 Vol.3 No.2

가로림만 조간대 표층퇴적물의 입도조직변수(평균입도, 분급도 및 왜도)를 기초로 '이차원 퇴적물 이동벡터모델'을 이용하여 퇴적물의 이동방향을 추정하였고 이에 따른 퇴적물의 이동현상을 해석하였다. 채취된 퇴적물은 각 정점마다 전체와 조립질(< 4.5 ${\phi}$)로 구분하여 각각의 퇴적물이동방향(15 경우)을 구하였고, 이 방향과 지형, 층면형태(bedform)의 정밀측정, 그리고 여러 번의 현장관찰을 기초로 결정된 퇴적물의 실제이동방향과 비교하였다. 퇴적물의 실제이동방향과 가장 일치하는 이동벡터는 조립질 퇴적물에서 퇴적물 이동방향으로 퇴적물이 세립해지고, 분급이 좋아지며 왜도가 감소하는 경우와 퇴적물이 조립해지고, 분급이 좋아지며 왜도가 증가하는 경우를 조합한 M 경우이다. 이는 조립질 퇴적물이 연구지역의 퇴적물이동에 주요 구성성분이며, 세립질(> 4.5 ${\phi}$)을 포함하는 전체 퇴적물보다 퇴적기작이 더 단순하므로 '퇴적물이동벡터모델'과 잘 부합하는 것으로 보인다. 또한 전체 퇴적물과 조립질 퇴적물 모두 퇴적물의 이동방향으로 분급도가 좋아지는 경향이 뚜렷한데, 이는 퇴적기작의 복잡성과 관계없이 연속적인 수리에너지는 퇴적물의 분급을 더 좋게 한다는 것을 증명한다. 또한 이 연구결과를 통하여 사주조간대의 조립질퇴적물의 이동은 남북방향으로 놓여 있는 만 입구 동주수로를 통하여 저조선에서 상부조간대로 이동하면서 퇴적되었고, 일부는 동주수로를 지나 남수로로 공급되어 반시계방향으로 돌며 북쪽지역으로 이동 퇴적되었음이 밝혀졌다. 조립질 퇴적물은 사주에 퇴적되지만, 일부는 북수로를 따라 썰물때 다시 만밖으로 나가는 것으로 퇴적물이동벡터모델이나 퇴적물 실제이동방향의 관찰 모두에서 증명되었다. 따라서 북수로 및 북동쪽 뻘질모래지역은 만 밖에서 운반된 부유퇴적물과 조립퇴적물이 동시에 퇴적되는 지역이며, 지역적으로 조립질과 세립질의 분리퇴적현상이 때때로 관찰되기도 하는 수리역학적 퇴적물 혼합지역이다. 사주의 육지이동과 북수로 발달현상은 조립퇴적물이 만 밖이나 만 입구 등 근원지(장안퇴를 포함한 사퇴)로부터 더 많이 유입되었거나 혹은 상대적 해수면의 상승의 결과로 보인다. Two-dimensional trend-vector model of sediment transport is first tested in the tidal flat of Garolim Bay, mid-western coast of the Korean Peninsula. Three major parameters of surface sediment, i.e., mean grain size, sorting and skewness, are used for defining the best-fitting transport trend-vector on the sand ridge and muddy sand flat. These trend vectors are compared with the real transport directions determined from morphology, field observation and bedforms. The 15 possible cases of trend vectors are calculated from total sediments. In order to find the role of coarse sediments, trend vectors from sediments coarser than < 4.5 ${\phi}$, (sand size) are separately calculated from those of total sediments. As compared with the real directions, the best-fitting transport-vector model is the "case M" of coarse sediments which is the combined trend vectors of two cases: (1) finer, better sorted and more negatively skewed and (2) coarser, better sorted and more positively skewed. This indicates sand-size grains are formed by simpler hydrodynamic processes than total sediments. Transported sediment grains are better sorted than the source sediment grains. This indicates that consistent hydrodynamic energy can make sediment grains better sorted, regardless of complicated mechanisms of sediment transport. Consequently, both transported vector model and real transported direction show that the source of sediments are located outside of bay (offshore Yellow Sea) and in the baymouth. These source sediments are transported through the East Main Tidal Channel adjacent the baymouth. Some are transported from the subtidal zone to the upper tidal flat, but others are transported farther to the south, reaching the south tidal channel in the study area. Also, coarse sediment grains on the sand ridge are originally from the baymouth, and transported through the subtidal zone to the south tidal channel. These coarse sediments are moved to the northeast, but could not pass the small north tidal channel. It is interpreted that the great amount of coarse sediments is returned back to the outside of the bay (Yellow Sea) again through the baymouth during the ebb tide. The distribution of muddy sand in the northeastern part of study area may result from the mixing of two sediment transport mechanisms, i.e., suspension and bedload processes. The landward movement of sand ridge and the formation of the north tidal channel are formed either by the supply of coarse sediments originating from the baymouth and outside of the bay (subaqueous sand ridges including Jang-An-Tae) or by the recent relative sea-level rise.

분석적 계층 프로세스(AHP) 기법을 이용한 e-CRM의 성공요인 분석

신동혁,김성진,안현철,Shin, Dong-Hyuk,Kim, Seong-Jin,Ahn, Hyun-Chul 한국CRM학회 2011 CRM연구 Vol.4 No.1

최근 기업들이 고객관계관리(CRM)의 도입과 확산에 많은 노력을 기울이고 있는 가운데, 정보통신기술의 발달과 인터넷 사용의 활성화로 인하여 온라인 채널을 활용하여 CRM을 구현하는 이른바 e-CRM에 대한 기업들의 관심 역시 높아지고 있다. 지금까지 많은 연구자들이 CRM의 성공요인들을 식별하고, 각 요인들의 우선순위를 알아보고자 노력을 기울여 왔다. 하지만, e-CRM 분야에 대한 성공요인 관련 연구는 지금까지 충분히 이루어지지 못했다. 이에 본 연구에서는 기업들이 성공적으로 e-CRM을 구현을 위한 준비를 할 수 있는 가이드라인을 제시하기 위해, 기존에 연구되었던 다양한 e-CRM구축의 성공요인들을 도출, 정리하고, 각 요인별 상대적 중요도를 전문가 설문을 통해 분석하여, 우선순위를 살펴보고자 하였다. 이 때 요인별 상대적 중요도는 전통적으로 많이 활용되고 검증되어 온 분석적 계층 프로세스(AHP) 기법을 이용하여 도출하였다. 기존의 연구들은 대부분 조직적인 요소와 기술적인 요소들로 성공요인을 분석하였지만 본 연구에서는 e-CRM의 기능적인 관점으로 성공요인을 도출하고자 하였다. 분석 결과, e-CRM의 성공을 위해서는 분석-운영-협업 CRM의 세 부분이 모두 균형 있게 관리되어야 하며, 특히 최고경영자의 전폭적인 지원과 양질의 고객정보 확보, 그리고 고객의 요구사항에 효과적으로 반응하는 우수한 온라인 처리능력의 확보가 중요한 것으로 나타났다. Recently, companies have interests in the adoption and diffusion of customer relationship management(CRM). And, as information and communication technologies and Internet technologies proliferate, they also have interests in e-CRM, which implements CRMusing online communication channels. Until now, many researchers have tried to identify the success factors of CRM and evaluate their relative importance. However, only a few studies have dealt with the success factors of e-CRM. For this reason, we aim at identifying and evaluating the success factors of e-CRM in order to provide the companies with the guideline for preparing the implementation of e-CRM. Our study adopts analytical hierarchy process(AHP) as a tool for evaluating these factors because it has been widely applied and validated for a long time. Whereas prior studies have analyzed the success factors from the organizational and technological perspective, our study analyzes them from the functional perspective. As a result, we found that the companies should manage all the CRM components including analytic-operational-collaborative CRM in good balance. Also, we found that the sufficient support from CEO, the acquisition of good quality customer data, and theonline processing capability for responding customers' requests effectively are important for the success of e-CRM.

흡수성 망상판과 나사를 이용한 안면골절의 견고정법

신동혁,김덕중,김수영,황은아,최현곤,김순흠,엄기일,Shin, Dong-Hyeok,Kim, Deok-Jung,Kim, Soo-Young,Hwang, Eun-A,Choi, Hyun-Gon,Kim, Soon-Heum,Uhm, Ki-Il 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.5

Purpose: Absorbable plate and screw fixation is widely used technique for internal rigid fixation in craniomaxillofacial surgery. However, there are some potential problems associated with the use of plate. The purpose of this study is to evaluate the feasibility of bone fixation in facial fracture using absorbable mesh in place of absorbable plate. Methods: The records of 55 patients with zygomaticomaxilla fractures treated by open reduction, performed by the author from February 2008 to May 2009, were retrospectively reviewed. Patients were selected to receive absorbable mesh fixation. The incidence of all complications including infection, hypoesthesia, and deformity was examined. Analysis with postoperative computed tomography follow-up demonstrates degree of reduction. Results: Forty-six patients met criteria for inclusion in the study. All patients went on to satisfactory healing without complication. Postoperative computed tomography revealed good bony alignment similarly non affected side. Conclusion: This study demonstrates that the rigid internal fixation of fractured bone fragments using absorbable mesh is more effective than absorbable plate, especially in comminuted fracture of maxilla.

VXML 수행을 위한 ECMAScript 인터프리터의 설계 및 구현

신동혁,윤영선,은성배,Shin, Dong-Hyeok,Yun, Young-Sun,Eun, Sung-bae 한국정보처리학회 2003 정보처리학회논문지 A Vol.10 No.2

VXML에서는 시스템에 관련된 정보의 이용, 복잡한 수식의 해석, 반복적인 기능의 수행, 함수의 선언과 호출 등을 위하여 ECMAScript를 사용한다. 그러나 ECMAScript는 인터넷을 위한 표준 스크립트 언어이기 때문에 VXML과의 유기적 연동이 어렵다는 단점이 존재한다. 본 연구에서는 ECMASciipt와 VXML의 유기적 연동을 위하여 ECMAScript의 요구사항을 만족시키는 인터프리터를 설계하고 구현하였다. VXML과의 연동을 위하여 VXML변수의 관리, 시스템 함수의 수행, 수식의 해석 및 함수의 호출 등의 인터페이스를 추가하여, VXML과 연동을 시도하였다. 연동 결과 VXML의 다양한 알고리즘을 처리할 수 있어 VXML의 응용 범위를 넓힐 수 있는 가능성을 얻었다. ECMAScript can support VXML in utilizing the system information, analysis of complex equation, iterative execution, declaration of functions and their call, etc. However, since the ECMAScript is the standard script language for Internet, there is no way that the script lithely connects with VXML. In this paper, we presented the design and implemented the interpreter that meets the requirement of ECMAScript for its flexible connection with VXML. For connections, we added some functions in modified ECMAScript : management of VXML variables, execution of system functions, analysis of equations and function calls. From the result of connection, it is shown that new ECMAScript can handle the various algorithms of VXML.

연구논문 - Superplasticity - : 7475 Al 합금의 초소성 변형 특성

신동혁,김기석,맹선재 ( D . H . Shin,K . S . Kim,S . C . Maeng ) 대한금속재료학회 ( 구 대한금속학회 ) 1990 재료강도 심포지엄 Vol.- No.-

7475 Al 및 5083 Al 합금의 초소성 변형

신동혁,주연준,맹선재 ( Dong Hyuk Shin,Yeon Jun Joo,Sun Chae Maeng ) 대한금속재료학회 ( 구 대한금속학회 ) 1997 재료강도 심포지엄 Vol.- No.-

건설사업관리자의 안전역량 평가체계 개발에 대한 연구

신동혁,성주현,육인수,이명구,오태근,Shin, Dong Hyuk,Seong, Joo Hyun,Yook, In Soo,Lee, Myeong-Gu,Oh, Tae Keun 한국안전학회 2017 한국안전학회지 Vol.32 No.4

Among various methods to build the construction safety, the consecutive improvement by the measuring and evaluating safety management capabilities for the construction participants such as an owner, a contractor, and a supervisor (construction project manager) can be the effective one. Thus, an effective evaluation and grading criteria to provide performance index for the implementation of safety management activities should be necessary. In this regards, the purpose of this study is to verify the adequacy by offering a competency evaluation system for the supervisor's safety capability and by applying the system to some construction sites. The proposed evaluation system was developed on the basis of the principles of safety management & accident prevention, basic elements of safety and health management system, and safety evaluation cases at home and abroad. The trial evaluation showed that the safety management of the construction site is mainly carried out by the contractor and the supervisor's awareness for the safety management is low on the whole. Especially, it is urgent to improve the support system from the supervisor headquarter and to place the dedicated safety management person in the field.

셀룰로오스 나노섬유가 첨가된 시멘트 모르타르 복합체의 강도 특성평가

신동혁(Donghyeok Shin),신종현(Jonghyun Shin),신성철(Sungchul Shin),현진호(Jinho Hyun) 한국펄프·종이공학회 2018 한국펄프·종이공학회 학술발표논문집 Vol.2018 No.4

RF 마그네트론 스퍼터링법으로 성장시킨 CuS 박막의 구조적 및 광학적 특성

신동혁(Donghyeok Shin),이상운(SangWoon Lee),손창식(Chang Sik Son),손영국(Young Guk Son),황동현(Donghyun Hwang) 한국표면공학회 2020 한국표면공학회지 Vol.53 No.1

CuS (copper sulfide) thin films having the same thickness of 100nm were deposited on the glass substrates using by radio frequency (RF) magnetron sputtering method. RF powers were applied as a process variable for the growth of CuS thin films. The structural and optical properties of CuS thin films deposited under different power conditions (40-100W) were studied. XRD analysis revealed that all CuS thin films had hexagonal crystal structure with the preferential growth of (110) planes. As the sputtering power increased, the relative intensity of the peak with respect to the (110) planes decreased. The peaks of the two bands (264㎝<SUP>-1</SUP> and 474㎝<SUP>-1</SUP>) indicated in the Raman spectrum exactly matched the typical spectral values of the covellite (CuS). The size and shape of the grains constituting the surface of the CuS thin films deposited under the power condition ranging from 40W to 80W hardly changed. However, the spacing between crystal grains tended to increase in proportion to the increase in sputtering power. The maximum transmittance of CuS thin films grown at 40W to 80W ranged from 50 % to 51 % based on 580㎚ wavelength, and showed a relatively small decrease of 48% at 100W. The band gap energy of the CuS thin films decreased from 2.62eV (at 40W) to 2.56eV (at 100W) as the sputtering power increased.