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      • KCI등재

        시스템 엔지니어링 방식에 의한 철강 연속 주조 시스템 설계

        신기영,홍대근,윤수철,서석환,Shin, Kee-Young,Hong, Dae Geun,Yoon, Soo Cheol,Suh, Suk-Hwan 한국시스템엔지니어링학회 2014 시스템엔지니어링학술지 Vol.10 No.2

        Recently, global market competition of iron and steel products is ever increasing due to over-supply from increased number of industries in rapidly growing countries, such as China, Brazil, and Indonesia. To occupy the big market, major industries are trying to develop high quality, high performance steel products via developing a new iron and steel making process. In other words, development of a new and innovative steel plant is a key to cope with the tough situation. Design and development for the life cycle of iron and steel making plant is very much complex and multi-disciplinary. In this paper, Plant Systems Engineering (PSE), a tailored SE process for industrial plant based on ISO/IEC 15288 is used for the design of Continuous Casting Process (CCP) Plant system. The CCP is a crucial process in steel making plant, whose design technology is occupied by the advanced foreign companies. For the sake of increasing engineering capability for the design of CCP, we applied PSE Process for the renovation of the existing CCP Process. Through the study, we were convinced that the applied method can be used for other plant systems, and SE is really the way of thinking, design, and development of modern complex and multi-disciplinary systems where high risk factors are present throughout the whole life cycle.

      • KCI등재

        A joint normalcy index to evaluate patients with gait pathologies in the functional aspects of joint mobility

        신기영,임용훈,김윤수,Hyo Shin Kim,Jae Woong Han,최창현,Kyung Suk Lee,Joung Hwan Mun 대한기계학회 2010 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.24 No.9

        Gait analysis using 3D motion capture systems provides joint kinematic and kinetic analysis results such as joint relative angles and moments that can be use used to evaluate the degrees of pathological gait patterns. However, the complex data produced using these 3D motion capture systems can only analyzed by experts, because the gait analysis is highly coupled to the kinematics of each joint. Therefore,severalSeveral previous studies using gait analysis have relied on the data compression technique to represent gait deviation from the average normal profiles as a single value. Even though it is important to evaluate gait pathologies at the joint level, all these previous studies have just used a single value to evaluate the pathological gait pattern. Using just one variable for evaluation of a gait is limited in terms of determining which joint movement patterns are getting better during rehabilitation. Therefore, in this study, a method suitable for evaluating gait deviation during a gait was developed to provide three indices for the hip, knee and ankle joints. In addition, to validate the proposed method in clinical cases, experimental tests were conducted on thirty thirty-six normal walkers and six patients with cerebral palsy. Furthermore, to validate the proposed method in regards to rehabilitation, experimental tests were conducted on three classified walking groups with imposed ankle equinus constraints. The JNI for the hip joint, knee joint and ankle were 8.78 (±3.70), 2.92(±3.25) and 8.79 (±4.38), respectively, in the normal walking group. However, these values were significantly different for the pathological walking group with cerebral palsy. The JNI of the hip joint, knee joint and ankle joint were 203.73 (±171.59), 81.23 (±52.13) and 248.39 (±149.99), respectively, for this group. There were also differences between any two of the three classified groups with imposed ankle equinus constraints. In particular, the JNI of the ankle joint was statistically different at the p<0.01 level, and this parameter clearly increased as the degree of the imposed ankle equinus was increased. These results demonstrate that the proposed JNI can be used as a scalar factor to evaluate the angular deviation of each joint in normal and patient groups. In addition, this approach can be adapted to evaluate rehabilitation and pre/post surgery.

      • KCI등재후보
      • 정성의 전달과 관계의 시작: NFC-모바일 연동 소셜 서비스, 티슬

        신기영(Ki-Young Shin),김진택(Jin-Taek Kim),김율화(Yul Hwa Kim),이단비(Dan Bi Lee),송석용(Seokyong Song),이종혁(Jong-Hyeok Lee) 한국HCI학회 2014 한국HCI학회 학술대회 Vol.2014 No.2

        기술의 발달은 현대사회에서 특히 젊은 세대의 소통 방식을 비약적으로 변화하게 만들었다. 본 연구에서는 빈번하고 짧은 자기 표현에 익숙한 젊은 세대를 위해서 사용자의 개성과 호감을 표현할 수 있는 모바일 기반 소통 방식을 NFC 기술과 연동하여 제안한다. HCI 의 연구 방법론인 맥락적 연구 방법론을 활용하여 젊은 세대의 실제 소통 방식을 관찰하고 발견된 문제를 자연 속 은유, 엉겅퀴를 차용하여 숨어있는 감성을 표현할 수 있도록 하였다. 제안된 모바일 인터랙션을 프로토타입으로 제작하여 시연 후 미래에 예상되는 문제까지 수용할 수 있는 기술 및 서비스 전파 방식까지 제안하는 것으로 향후 유사한 연구가 생각해야 할 기술 및 사회적 의미와 영역을 제시한다. Recently, developments in technology have changed culture and custom of interaction a lot, especially in young generation. This research suggests new interaction methods for teenagers and college students. The user can express own characteristics and interests by using NFC technology with Smartphone. We are using a contextual inquiry method to figure out the real way of communication among young generation. We also adopt a metaphor of a thistle to reveal user’s sensitivity. A prototype test and its’ evaluation shows the guidance of boundary for future research, which contains not only technology but also social and humanity.

      • KCI등재

        소셜 네트워크 분석을 이용한 인사채용 검증기법

        신기영(Ki-Young Shin),이종혁(Jong-Hyeok Lee) 한국정보과학회 2013 정보과학회논문지 : 데이타베이스 Vol.40 No.6

        최근 인사채용 시스템에서 SNS가 차지하는 비중은 점점 커지고 있다. 개인의 삶과 동기화 된 소셜 네트워크 데이터를 채용과정에 활용하기 위해 소셜 네트워크 분석 방법론을 적용하여 A)이력서의 사실 여부 검증, B)지원자의 평판 조회를 해줄 대상자 선별에 기여할 수 있는지를 본 연구를 통해 고찰해 보았다. 각각의 실험 A와 B 결과(Recall A: 70.08%, B: 70.06%)는 실제 기업에서 본 제안을 충분히 활용할 수 있는 가능성을 시사한다. 향후 인사채용 시스템 IT화에 기여하여 채용 시스템 운영비용을 절감하는 등의 효과가 있을 것으로 기대된다. Recently, Social Network Services (SNS) in recruitment process have become very important. It is possible because the applicant"s real life has synchronized with social network data; in other words, people are getting used to reflect their life on SNS. This experiment suggests the possibility to use SNS data for enhancing a recruitment system, especially for A) Resume verification and B) Reference selection by using social network analysis methodology. The experimental results (Recall A: 70.08%, B: 70.06%) can be interpreted as a company could use the proposed method in its real recruitment process. We expect that this research will reduce the operating costs of recruitment verification by digitalization.

      • 실내 공간 확보 위한 HVAC 슬림화 컨셉 연구

        신기영(Geeyoung Shin),권동호(Dongho Kwon),김명회(Myunghoe Kim),한승식(Seungsik Han) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6

        As the era of fully autonomous driving approaches, the purpose of the vehicle will change from a vehicle to a living space like a home. For this, it is necessary to change the space in which the passengers stay. For this change, the indoor space is secured larger than before. To do this, the reduction of existing indoor parts is essential. It is thought that the change of the cockpit located in front of the current vehicle will be most prominent. For the change ofcockpit, the representative part that occupies the largest volume among the parts located inside It is a hvac system for indoor cooling/heating. This cooling/heating system has a direct effect on mileage It must be a system capable of responding to heat pump systems, and the interior volume must be reduced to respond to changes. For this, the temperature control door inside the hvac is removed, and the hvac system capable of constructing a heat pump system Development review.

      • KCI등재

        FEM 분석을 통한 맥진센서모듈의 패키징 형태와 응력분포

        신기영(Shin, Ki-Young),이상식(Lee, Sang-Sik),주수빈(Joo, Su-Bin) 한국정보전자통신기술학회 2011 한국정보전자통신기술학회논문지 Vol.4 No.3

        맥파를 정량적으로 측정하기 위해 다양한 맥진기가 개발되어 왔으며, 맥진기는 비침습적으로 맥파를 측정하기 위해 압력센서를 이용한다. 이러한 맥진기에 사용되는 맥진 센서 모듈은 압력센서와 압력센서의 와이어링을 보호하기 위한 코팅이 사용되는데, 코팅의 재질 또는 모양에 따라 측정 겨로가에 영향을 미칠 수 있다. 본 논문에서는 맥진센서에 압력을 가하였을 때 PDMS 코팅 형태에 따라 압력센서에 전달되는 응력분포를 비교하기 위해 6종류의 코팅모델에 두 가지 방법의 압력을 가하여 유한요소해석을 실시하였다. 결과적으로 맥진센서 중앙에 압력을 가하여 해석을 수행 하였을 때 맥진센서 모듈의 PDMS 코팅두께를 0.3mm씩 줄일수록 중앙의 압력센서에 전달되는 응력은 24%씩 증가하였고 주변의 압력센서로 전달되는 응력은 4.9%씩 감소하였다. 그리고 코팅에 가이드가 있는 경우 주변 압력센서로 전달되는 응력의 비율이 2.7% 더 적게 나타났다. Since many blood pressure pulse analyzer made to measurement of a pulse wave in quantitative way has been started, some sorts of pressure sensors are being developed. The result could differ and this cause either type of sensor or module shape, when pulse wave is measured. In this paper, calculate and compare the pressure sensor's stress distribution according to thickness of PDMS coating and existence of guide through Finite Element Method. As a result, the center of pressure sensor's stress increase as much as 24% as it is reduced as much as 0.3 mm that the PDMS coating thichness of pulse diagnostic sensor module, on the other hand the surrouding censor of center sensor's stress is reduced as much as 4.9%, and transmissive proportion of stress is small as little as 2.7%, When coating has guide.

      • KCI등재

        치아 외상성 손상의 발생 빈도와 예후에 대한 임상적 고찰

        신기영(Ki Young Shin),김수남(Soo Nam Kim),이동근(Dong Kuen Lee),임창준(Chang Joon Yim) 대한구강악안면외과학회 1990 대한구강악안면외과학회지 Vol.16 No.3

        The incidence of the traumatic teeth in juries were studied retrospectively with a total of 489 patients(Total No. of teeth : 1565) and the affecting factors to prognosis were studied with 319 teeth at the department of oral and maxillofacial surgery, colloege of dentistry, Wonkwang university. According to the age and sex, etiologic factors, type of tooth injureies and the incidence were studied and the result were as follows : Male patients of second and third decades were most frequently involved and the average number of teeth injuried were 3.1. The most common type of tooth injuries were subluxation (includes concussion) among the periodontal tissue injuries and complicated crown fractures among the hard tissue injuries. The traffic accident were the most common etiologic factors. Traumatized teeth can disclose a number of complications, such as pulp necrosis, pulp canal obliteration, root resorption and/or loss of marginal supporting bone. So we investigated indirectly the prognosis with pulp necrosis, teeth mobility change, and root resorption. The incidence of pulp necrosis and its relationship with age, root formation, the degree of reduction, the time elapsed between injury and treatment were studied. Tooth mobility changes according to alveolar bone level and root resorption according to the time interval between injury and treatment were also studied. The results were as follows ; The pulp necrosis were occured in the 158 teeth (49.5%) among 319 teeth and root resorption were 29 teeth(83%) among the total avulsed 35 teeth. Root canal treatment were performed in the 172 (54.1%) teeth and 25 teeth were extracted due to severe mobility, periodontal abscess, and periapical lesion.

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