용탕충진과정에 있어서 열 및 유동을 포함한 2차원 응고해석

김성빈,조인성,김진수,홍준표 ( Sung Bin Kim,In Sung Cho,Jin Su Kim,Chun Pyo Hong ) 한국주조공학회 1993 한국주조공학회지 Vol.13 No.5

N/A A Numerical technique has been developed for the coupled heat transfer and fluid flow calculation during the casting process. In this method the SMAC technique was coupled with the concept of Volume of Fluid(VOF) to calculate melt free surface and velocity profiles within the melt, and the Energy Marker method coupled with the finite difference method was proposed for the convective and conductive heat transfer analysis in the casting. When comparing numerical calculations with experimental observations, a close correlation was evident. It has been shown that this technique is useful for proper gating and casting design, especially for thin-walled castings.

하악 무치악 환자에서 임플란트 하이브리드 보철물을 이용한 전악 수복 증례

김성빈,김성회,박영범,문홍석,Kim, Seong-Bin,Kim, Sung-Hoi,Park, Young-Bum,Moon, Hong-Suk 대한치과보철학회 2013 대한치과보철학회지 Vol.51 No.3

무치악 환자의 임플란트 보철 치료는 지지, 유지, 안정성, 발음 등의 측면에서 더 우수한 결과를 보인다. 임플란트를 이용한 무치악 환자의 치료는 다양하며, 크게 가철성과 고정성으로 나눌 수 있다. 가철성 치료에는 임플란트 유지 및 지지 피개의치가 있으며, 고정성 보철치료에는 ceramo-metal 보철물과 임플란트 하이브리드 보철물(implant hybrid prosthesis)이있다. 치료계획의 수립은 잔존 치조제, 연조직, 악간 관계, 환자의 경제적 상황 등을 종합적으로 고려하여 수립해야 한다. 임플란트를 이용한 하이브리드 보철물은 고정성 치료를 통해 환자에게 적절한 교합력을 제공하고 심리적인 안정감을 주는 동시에 적절한 연조직의 회복을 통한 심미적인 결과를 얻을 수 있다. 본 증례는 73세 여환으로 상악 Kennedy Class I 부분 무치악과 하악 무치악 상태로 내원하였다. 상악에는 우측 견치부터 좌측 제1소구치까지 7개의 잔존치를 이용한 가철성 국소의치, 하악은 양측 측절치와 제1소구치 부위에 4개의 임플란트 고정체를 이용한 하이브리드 보철물로 최종 치료 진행하였으며 치료 후 기능적, 심미적으로 만족스러운 결과를 얻었기에 이를 보고하고자 한다. Implant prosthodontics is beneficial for edentulous patients in enhancing the support, retention, stability, phonation and so on. Various types of prosthesis supported by implant, including implant retained- or supported- overdenture for the removable type and ceramo-metal and fixed prostheses with processed acrylic teeth for the fixed type, are frequently used. Treatment planning for the prosthesis with implant must be made after considering individual characteristics such as form of residual ridge, soft tissue, interocclusal relationship, economic status. Fixed prosthesis with processed acrylic teeth (also known as 'implant hybrid prosthesis' or 'bone anchored bridge') has the advantages of both removable and fixed prosthesis such as proper soft tissue profile, esthetic outcome, increased masticatory efficiency and psychological stability. The 73-years-old female patient came to the department of prosthodontics, Dental hospital of Yonsei University. She was diagnosed with Kennedy class I partial edentulism in the maxilla and complete edentulism in the mandible. This article reports a satisfactory clinical and esthetic outcome of full mouth rehabilitation using removable partial denture in the maxilla and implant hybrid prosthesis in the mandible.

화학공장에서의 대형사고 예방을 위한 SHE 경영전략 시스템 구축

김성빈(Sung Bin Kim),고재욱(Jae Wook Ko) 한국가스학회 2000 한국가스학회 학술대회논문집 Vol.2000 No.9

안전·보건, 환경(SHE : Safety, Health & Environmant)의 통합 관리모델 구축에 관한 연구

김성빈(Sung Bin Kim),홍재훈(Jae Hun Hong),류병태(Byung Tae Ryu),서재민(Jae Min Seo),엄성인(Sung In Um),고재욱(Jae Wook Ko) 한국가스학회 2002 한국가스학회지 Vol.6 No.1

선택적 전기화학 3D 프린터 기술 소개 및 PCB 양산공정 적용방식 고찰

김성빈(Sung-Bin Kim),유봉영(Bongyoung Yoo) 한국표면공학회 2021 한국표면공학회지 Vol.54 No.3

Some studies on electrochemical additive manufacturing of metals were summarized in this technical report, and development status of selective electrochemical 3D printing technology was introduced. In order to apply it to the PCB mass production process, essential considerations how to overcome the fundamental problems, such as the sizing, process sequence and PCB process design have been described.

TSP 센서 전극용 Nano Silver Paste 제조 및 물성

김성빈 ( Sung Bin Kim ),남수용 ( Su Yong Nam ),김민식 ( Min Sik Kim ) 한국화상학회 2014 한국화상학회지 Vol.20 No.1

현재 TSP(Touch Screen Panel)는 스마트폰을 비롯한 태블렛 PC, 대형 광고용 TSP 등으로 점점 대형화되고 있다. 화면이 점점 대면적화되면 기존 ITO(Indium Tin Oxide)전극을 센서 전극으로 사용하면 응답 속도가 늦어지는 문제점이 발생하게 된다. 이러한 문제점을 해결하기 위해서 센서 전극을 ITO대신에 nano silver paste를 이용하는 기술이 개발되고 있다. 본 연구에서는 새로운 합성법인 전자빔으로 nano silver powder를 개발하였다. 이렇게 개발된 nano silver powder와 이미 개발된 submicron silver powder를 혼합하여 hybrid silver paste를 제조하였다. 제조된 paste를 이용하여 4㎛, 7㎛의 미세패턴을 구현할 수 있었다. Recently, touch screen panel (TSP) is becoming larger in size from smart phones to table PC, large-sized advertising touch panel and etc. When the size of screen becomes larger problem of slowed response speed occurs, using ITO electrode as sensor electrode. To solve this problem, new technology is in development that uses nano silver paste instead of ITO as sensor electrode. In this research, as a new synthesis method, nano silver powder has been developed by electron beam. By compounding the newly developed nano silver powder and original submicron silver powder, Hybrid silver paste has been produced. Using the produced paste, 4㎛, 7㎛ micro patterns were realized.

성실성과 신경증의 상호작용이 창의수행과 안전수행에 미치는 영향에서 조절초점의 매개효과

김성빈 ( Sung-bin Kim ),유태용 ( Tae-yong Yoo ) 전북대학교 사회과학연구소 2017 지역과 세계 Vol.41 No.2

본 연구의 목적은 성격 5요인 중 성실성과 신경증의 상호작용이 창의수행과 안전수행에 미치는 영향에서 조절초점의 매개효과를 살펴보는 것이었다. 구체적으로, 성실성과 신경증의 상호작용이 창의수행에 미치는 영향에서 향상초점의 매개효과를, 그리고 성실성과 신경증의 상호작용이 안전수행에 미치는 영향에서 예방초점의 매개효과를 검증하였다. 이를 위해 국내 대기업에서 근무하는 현장 기술직 214명을 대상으로 설문조사를 실시하여 자료를 수집하였고, 매개된 조절효과 분석을 실시하였다. 그 결과, 성실성은 창의수행과 정적인 관계가 있었고, 신경증이 높은 집단보다 낮은 집단에서 이 둘 간의 정적 관계가 더욱 강하게 나타났으며, 이러한 성격요인 간 상호작용과 창의수행 간의 관계를 향상초점이 완전 매개하였다. 또한 성실성은 안전수행과 정적인 관계가 있었고, 신경증이 높은 집단보다 낮은 집단에서 이 둘 간의 정적 관계가 더욱 강하게 나타났다. 하지만 성격요인 간 상호작용과 안전수행 간의 관계를 예방초점이 매개하지는 않는 것으로 확인되었다. 마지막으로 이러한 연구 결과를 토대로 본 연구의 학문적 의의, 실무적 의의, 제한점 그리고 향후 연구과제에 대해 논의하였다. The purpose of this study was to investigate the mediating roles of regulatory focus on the relationship between the interaction of conscientiousness and neuroticism and creative performance and safety performance. Specifically, this study examined the mediating role of promotion focus on the relationship between the interaction of conscientiousness and neuroticism and creative performance, and the mediating role of prevention focus on the relationship between the interaction of conscientiousness and neuroticism and safety performance. In oder to testify hypotheses, data were collected by the survey from 214 blue collar workers. It was found that conscientiousness was positively related to creative performance and this positive relationship was stronger for the people with low neuroticism in comparison to the people with high neuroticism. The relationship between the interaction of conscientiousness and neuroticism and creative performance was completely mediated by the promotion focus. Also, conscientiousness was positively related to safety performance and such positive relationship was stronger with the people with low neuroticism than high neuroticism. However, the relationship between the interaction of conscientiousness and neuroticism and safety performance was not mediated by the prevention focus. On the basis of these results, academic and practical implication, limitation, and suggestion for future research were discussed.

커뮤니티 컴퓨팅에서 사용자 요구 반영을 위한 통계적 패턴인식 기법

김성빈(Sung-Bin Kim),정혜동(Hye-Dong Jung),이형수(Hyung-Su Lee),김석윤(Seok-Yoon Kim) 대한전기학회 2009 정보 및 제어 심포지엄 논문집 Vol.2009 No.5

The conventional computing is a centralizing system, but it has been gradually going to develop ubiquitous computing which moves roles away from the main. The Community Computing, a new paradigm, is proposed to implement environment of ubiquitous computing. In this environment, it is important to accept the user demand. Hence in this paper recognizes pattern of user's activity statistically and proposes a method of pattern estimation in community computing. In addition, user's activity varies with time and the activity has the priority. We reflect these. Also, we improve accuracy of the method through Knowledge Base organization and the feedback system. We make program using Microsoft Visual C++ for evaluating performance of proposed method, then simulate it. We can confirm it from the experiment result that using proposal method is better in environment of community computing.

RCM 기법을 이용한 도시철도 신뢰성 평가 시스템 개발에 관한 연구

김성빈(Sung-Bin Kim),배철호(Chul-Ho Bae),김현준(Hyun-Jun Kim),이호용(Ho-Yong Lee),서명원(Myung-Won Suh) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.5_2

During the past decades urban transit has grown to the principal public transportation. As unexpected failures/accidents occur, more systematic approach for securing safety and enhancing reliability of urban transit has been required. In this research, we aim to develop the reliability evaluation system to predict life-cycle of equipment which have critical influences on the entire system by using RCM(Reliability Centered Maintenance) technique. For systematic collection and analysis of failure history, BOM(Bill Of Materials) creation and standardization of failure code classification have been first done. For development of the reliability evaluation system, RBD(Reliability Block Diagram) is constructed based on BOM, and RAMS(Reliability, Availability, Maintainability and Safety) analysis and FMEA(Failure Modes and Effects Analysis) have been performed. Ultimately, this developed system issues a list of parts which are needed to be inspected and repaired.

폐주변부 병변의 진단시 기관지 초음파(Endobronchial Ultrasonogram)의 유용성

김성빈 ( Sung Bin Kim ),박진희 ( Jin Hee Park ),김예나 ( Ye Na Kim ),옥철호 ( Chul Ho Oak ),장태원 ( Tae Won Jang ),정만홍 ( Man Hong Jung ),천봉권 ( Bong Kwon Chun ) 대한결핵 및 호흡기학회 2009 Tuberculosis and Respiratory Diseases Vol.67 No.6

Background: Endobronchial ultrasonogram (EBUS) has increased the diagnostic yield of a bronchoscopic biopsy of peripheral pulmonary lesions (PPL). This study evaluated the diagnostic yield of EBUS-guided transbronchial biopsy (TBB) and the visibility of EBUS PPL. Methods: Between August 2007 and November 2008, 50 patients (32 men and 18 women, median age, 61.1±10 yrs; range, 16 to 80 yrs) whose PPL lesions could not be detected with flexible bronchoscopy were enrolled in this study. Among the 50 patients, 40 cases were malignant lesions (adenocarcinoma 25, squamous cell carcinoma 10, small cell carcinoma 5) and 10 cases were benign lesions (tuberculoma 7, fungal ball 1, other inflammation 2). Results: The mean diameter of the target lesion was 35.4±4.3 mm. Of the 50 patients examined, the overall diagnostic yield by EBUS-TBLB was 46.0% (23/50). The visualization yield of EBUS was 66.0% (33/50). A definitive diagnosis of PPL localized by EBUS was established using EBUS-TBLB in 69.6% (23/33) of cases. The diagnostic yields from washing cytology and brushing cytology from a bronchus identified by EBUS were 27.0% and 45.4% respectively. The diagnostic yields reached 78.7% when the three tests (washing cytology, brushing cytology and EBUS-TBLB) were combined. The visualization yield of EBUS in lesions <20 mm was significantly lower than that in lesions ≥20 mm (p=0.04). The presence of a bronchus leading to a lesion (open bronchus sign) on the chest CT scan was associated with a high visualization yield on EBUS (p=0.001). There were no significant complications associated with EBUS-TBLB. Conclusion: EBUS-TBLB is a safe and effective method for diagnosing PPL. The lesion size and open bronchus signs are significant factors for predicting the visualization of EBUS.