Design and construction of the GK immersed tunnel of Busan-Geoje Fixed Link Project

Yongil Kim(김용일),Woongku Kim(김웅구),Jechun Kim(김제춘),Jungsang Lee(이정상),Kyoungo Kim(김경오) 한국암반공학회 2009 터널과지하공간 Vol.19 No.2

GK침매터널은 침매터널공법으로는 국내 최초이다. 국내 시공사례의 부재, 최대 수심 약 50m에서 이루어지는 침매함체 연결 및 연약지반 등 시공상 많은 어려움에도 불구하고 현재 여덟 개의 침매함체가 성공적으로 시공되었으며 올해 안에 열 두번째 함체까지 시공될 예정이다. 본 논문의 목적은 GK 침매터널에 대한 설계 및 시공 조건을 유사 프로젝트를 수행하는 터널공학자들에게 소개하여 용이하게 프로젝트를 수행할 수 있게 하기 위함이다. The GK immersed tunnel as a part of Busan-Geoje Fixed Link Project, is the first attempt in Korea. In spite of existing of many difficulties in construction like the absent of construction cases in Korea, the connection work under approximately 50 m below sea level and weak ground condition, etc., now eight caissons were installed successfully on the accurate position and we are going to install upto the twelfth caisson in this year. The purpose of this paper is to introduce design and construction conditions of the GK immersed tunnel to advise the tunnel designers who will handle the similar project.

Pedlatrlcs : Could One-Hand Compression for a Small Child Cause Intra-abdominal Injuries?

( Dong A Kim ),유연호 ( Yeon Ho You ),( Yong Chul Cho ),( Seung Ryu ),( Jin Woong Lee ),( Seung Whan Kim ),( In Sool Yoo ),( Won Joon Jeong ),( Jungsang Min ),( Ji Sook Lee ),( Jin Hong Min ),( Seong Soo 대한응급의학회 2014 대한응급의학회지 Vol.25 No.4

Purpose: We examined the question of whether one-hand chest compression for a small child could compress intraabdominal organs. Methods: We retrospectively examined medical charts and multidirectional computed tomography (MDCT) images obtained from children aged 1 to 18 years who presented to the hospital from March 2002 to March 2012. We measured the length of the sternum (Stotal) and the length of the lower half of the sternum (Stotal/2~X). We also measured the distance from the diaphragm to the midpoint of the sternum (Stotal/2~D) and half the width of an adult hand (Wtotal/2). Finally, we counted the number of instances at each age in which Stotal/2~X and Stotal/2~D were less than Wtotal/2. Results: This study included records and MDCT images for 301 children with a mean age of 12.05±5.59 years. We also enrolled 47 adult rescuers (25 men, 53.2%) with a mean age of 23.20±2.13 years. The mean Wtotal/2 was 4.62 ±0.46 cm. All 1-year-old children had Stotal/2~X and Stotal/2~D less than Wtotal/2. Among children aged 2 years, six (60.0%) had Stotal/2~X and Stotal/2~D less than Wtotal/2. Among children aged 3 years, four (26.7%) had Stotal/2~X and Stotal/2~D less than Wtotal/2, and among those aged 4 years, two (13.3%) had Stotal/2~X and Stotal/2~D less than Wtotal/2. However, Stotal/2~X and Stotal/2~D were greater than Wtotal/2 in children aged 5 years or more. Conclusion: Our measurements indicate that one-hand chest compression for a small child could cause intraabdominal organ injury.

이암 성토지반의 안정화를 위한 최적주입률 산정에 관한 실험적 연구

이정상(Lee Jungsang),이승준(Lee Seungjun),김연중(Kim Yunjoong),김태수(Kim Taesoo),도종남(Do Jongnam),천병식(Chun Byungsik) 한국지반환경공학회 2012 한국지반환경공학회논문집 Vol.13 No.7

현재 지반주입공법에 사용되는 약액으로는 물유리계가 주로 사용되고 있다. 최근 국내에서는 지반개량 재료로 무기질계급결재와 초미립자 시멘트를 주원료로 하는 NDS(Natural and Durable Stabilizer)공법 등의 개발이 활발하게 연구되어 왔다. 그러나 일반적으로 주입공법의 경우, 주입 효과에 대한 확인이 어렵고 지반 및 지하수의 오염 등 환경 공해의 우려가 있는 문제점이 있다. 따라서, 이암으로 성토된 지반에 대한 주입공법 적용시 주입재료별(물유리계 및 무기질계) 주입률에 따른 강도 및 차수특성을 파악하여 적정주입량을 산정하기 위하여 일축압축강도시험, 어독성시험, 삼축투수시험을 실시하였다. SGR(Space Grouting Roket)과 NDS의 경우 재령 28일의 공시체를 기준으로 주입률 50%까지는 강도 및 차수성 증대가 현저하다가 50% 이상에서는 증대량이 미미한 바, 적정 주입률을 50%로 결정하였다. Water glass chemical grouts are primarily used in ground injection projects. Natural and Durable Stabilizer (NDS), Space Grout Rocket (SGR), and other similar materials composing of inorganic accelerating agents with ultra fine cement have been gaining popularity as ground improvement material in South Korea. However, there are questions as to grouting results and environmental issues caused by NDS grout. This study uses the injection method in mudstone embarkment to evaluate the differences in strength, permeability, and optimum injection volume through the use of uniaxial and triaxial compression tests and fish poison tests for NDS and SGR materials. After 28 days, results showed SGR and NDS to have a 50% increase in strength and 50% decrease in permeability with the proper injection rate at 50%.

고령자를 위한 디지털 헬스케어 서비스 UX 디자인 연구: 인지기능 평가 애플리케이션 ‘DACI’를 중심으로

송현실(Song, Hyunsil),윤병훈(Yun, Byunghun),김환이(Kim, Whani),고현정(Ko, Hyunjeong),한수민(Han, Sumin),박소윤(Park, Soyoon),권의준(Kwon, Uijun),유정상(Yoo, Jungsang),김보희(Kim, Bohee),김진우(Kim, Jinwoo) 한국HCI학회 2024 한국HCI학회 학술대회 Vol.2024 No.1

최근 우리 사회는 초고령화 사회로 급격히 전환되고 있다. 이에 초고령 사회의 여러 문제를 해결하기 위한 수단으로 디지털 헬스(Digital Health)가 주목받고 있으며, 고령자를 위한 모바일 기기 기반의 디지털 헬스케어 콘텐츠의 개발이 활발히 이루어지고 있으나 고령의 사용자는 디지털 기기와 정보를 활용하는 데 어려움을 겪고 있어 고자의 사용성 문제를 해결하기 위한 통합적인 지침과 디자인 전략이 필요하다. 본 연구는 인지 기능 평가 애플리케이션 ‘DACI (Digital Assessment of Cognitive Impairment)’를 중심으로 고령자를 위한 디지털 헬스케어 애플리케이션에서 고령자의 특성과 그에 따른 정보 표현 및 UX/UI 디자인을 효과적으로 제공하는 방식을 중점적으로 파악하고, 디지털 헬스케어 서비스 기획 시 활용할 수 있는 디자인 전략을 제안하고자 한다. 본 연구는 고령자와 디지털 헬스케어 서비스의 특성을 분석하고 선행연구에 기반한 UX/UI 디자인 가이드라인을 해결 방안으로 제시하였고, 특히 실제 DACI 어플리케이션 개발을 통해 UX/UI 가이드라인이 반영된 인터페이스 방안을 제시하였다는 점에 의의가 있다.

Developing a new moxacatuery instrument for improvement immunity

Kim eunwon,Choi Jungsang 한국산업경영시스템학회 2002 한국산업경영시스템학회 학술대회 Vol.2002 No.추계

This research focuses on the study about the mugwort moxibustion and the manufacture of moxacautery instrument, which has been highly regarded in terms of alternative medicine and preventive medicine. The research has its purpose to study moxacautery instrument, which the far infrared ray, magnetic force, essential amino acids, good quality of protein, and vegetable fat, can be absorbed into the system of through the skin. The technical background of the research offers the characteristics of the far infrared ray, relationship between the far infrared ray and the human body, the role of the main body of moxacautery instrument, the function of the cover, and the features of the undercover. The research also shows the manufacture process of moxacautery instrument and natural nano materials based on mineral and bamboo charcoal. In the light of the excellence of mugwort moxibustion there is not much need to explain the way of using moxacautery instrument and treatment coverage. This research suggests the coverage of mugwort moxibustion- neurosis, metabolism, malnutrition, endocrine diseases, respiratory diseases, tuberculous diseases, digestive diseases, circulatory diseases, malignant[vicious] tumor, urinary diseases. The research also suggests three spot on the body important for moxacautery to strengthen the immune function of the body and seven spot on the body important for moxacautery to keep health and to treat the body.

Justification of A Product Design with A Multiple Attribute Decision Making

Kim, Gyutai,Choi, Jungsang CHOSUN UNIVERSITY 1997 Basic Science and Engineering Vol.1 No.2

The development of computer technologies makes it possible to simultaneously perform a product and process design. A special project team for a concurrent product and process design can generate, test, analyze and evaluate a various number of a product design with an aid of computer technologies and thereafter come to determine the most favorable alternative of a product design. Since a product design significantly affects the strategic factors such as quality, delivery time, flexibility, cost and etc. to a business success in a highly competitive world market of today, this paper is concerned with proposing a decision model for the way to judiciously justify a product design in a multiple attribute decision making(MADM) environment. As a fina note, it is recommended that after determining the best product design alternative, the analytical economic analysis about the effect of a product design should be followed to create a general consent from the memers of a team.

Production Scheduling in a Flexible Manufacturing Cell to Minimize Total Completion Time

Choi, Jungsang,Kim, Gyutai CHOSUN UNIVERSITY 1997 Basic Science and Engineering Vol.1 No.2

This research is concerned with production scheduling in a flexible manufacturing cell which consists of several machining centers and assembly centers, a bidirectional automatic guided vehicle. The objective of this research is to develop a heuristic scheduling procedure that minimizes total completion time. The proposed heuristic algorithm is implemented to evaluate a number of cases by computer simulation. The results show that the proposed algorithm provides better solution than the previous algorithms.

Developing a remedying sheet for pain caused mucle"s fatigue

Eunwon Kim,Jungsang Choi 한국산업경영시스템학회 2002 한국산업경영시스템학회 학술대회 Vol.2002 No.추계

A study on processing for producing cure seat radiated by Original Infrared Rays and Magnatic force. We are well aware that Original Infrared Rays and Magnatic force influence on our human body benificially. In the technical background of this research product, we treated that the product has some operations of ceramic hardwood charcoal, far infrared rays and magnetic, so it can serve large part curative values made of far infrared rays and magnetic force of ceramics. Also, in the special quality of the product deal with ceramic, hard charcoal, ferrite, gelatin what is needed in prodution. And among them, ferrite, ceramic and hard charcoal are introduced by the manufacturing process of the moleculeization. In concluding, this study described the manufacturing process on the basis of the worksheets and arranged theuseful effect which effect on human body. There are so many symptoms in the pain of muscle. It"s very various. for example, it is the cause of the liver, the spleen and a kidney function"s weakening. the cause of the backbone subluxation, the cause of the shoulderjoint and scapula, the cause of the sacrum andiliacjoint, the cause of hip joint and the cause of a sprain. In this thesis, we mainly deal with the method which the muscle and nervous system disease by fatigue and a sprain cure seat radiated by Original Infrared Rays and Magnatic force. then, Original Infrared Rays and Magnatic force pack up frapezius muscle, gluteus minimum muscle, gluteus medius muscle, gluteus maximus muscle, pririformis muscle around the spine. through this course the moral pressure by the nervous system disease can be treat.

인공지능 모델과 공공 기상데이터를 활용한 깊이별 밭 토양온도 및 토양수분함량의 예측 및 정확도 평가

김대현 ( Daehyun Kim ),유정상 ( Jungsang Yoo ),이중용 ( Joong Yong Rhee ) 한국농업기계학회 2022 한국농업기계학회 학술발표논문집 Vol.27 No.2

토양은 농작물 생장에 직접적으로 관여하기 때문에 작물을 효과적으로 재배하기 위해서는 깊이에 따른 토양환경을 계측하고 관리하는 작업이 필요하지만, 고가의 계측장비 비용으로 인한 경제적요인과 기상환경의 불확실성 때문에 국내 농업생산량의 90%이상 차지하는 노지에서는 그러한 작업의 빈도가 낮다. 따라서 경제적인 부담을 줄이면서 깊이에 따른 토양환경을 실시간으로 모니터링 할 수 있는 방안을 세울 필요성이 대두되고 있다. 본 연구에서는 계측장치 없이 농업에 활용할 수 있는 토양환경 데이터를 획득하기 위한 것으로, 기상 인자 데이터와 인공지능 모델을 활용하여 깊이별 밭 토양의 온도와 수분햠량을 예측하고 실측값과 비교를 통해 정확도를 평가한다. 시계열 분석에 널리 사용되는 RNN(Recurrent Neural Network)인공지능 모델과 RNN모델이 가지고 있는 단점을 보완하기위해 그것을 기반으로 개발된 LSTM(Long Short Term Memory)모델을 활용하였다. 공공기상대에서 취득한 기온, 습도, 일사량, 강수량, 풍속 다섯 종류의 기상 인자 데이터와 10cm, 20cm, 30cm 깊이에서의 토양온도와 토양수분함량 데이터를 활용하여 예측모델을 만들었으며 실제 농업활동이 이루어지고 있는 특정 밭 지역에서 해당지역의 기상데이터를 대입하여 깊이 별 토양환경 예측값을 추출하고 실측값 간의 RMSE값을 산출하여 예측값의 정확도를 평가하였다. 그 결과 RNN모델을 사용했을 시 토양온도는 예측값과 실측값 간의 RMSE 값은 각각 10cm 3.21℃, 20cm 3.37℃, 30cm 3.41℃가 산출되었으며, 토양수분함량은 10cm 8.89%, 20cm 9.78%, 30cm 9.21%가 산출되었다. LSTM모델을 사용했을 시 토양온도는 예측값과 실측값 간의 RMSE 값은 각각 10cm 2.51℃, 20cm 2.77℃, 30cm 3.01℃가 산출되었으며, 토양수분함량은 10cm 4.67%, 20cm 6.45%, 30츠 5.88%가 산출되었다. 추후 연구에서는 기상환경 이외의 데이터를 활용하고, 더욱 최적화된 모델을 설계하여 더욱 정확한 예측이 가능한 연구가 진행 될 예정이다.

퍼지 서비스 FMEA를 이용한 서비스 시스템 설계

김준홍(Junhong Kim)․,유정상(Jungsang Yoo) 한국산업경영시스템학회 2008 한국산업경영시스템학회지 Vol.31 No.4

FMEA (failure mode and effect analysis)is a widely used technique to assess or to improve reliability of product not only at early stage of design and development, but at the process and service phase during the product life cycle. In designing a service system, this study proposes a fuzzy service FMEA with the service blueprints as a tool which describes customer actions, onstage contact employees actions, backstage contact employees actions, support processes, and physical evidences, in order to analyse and inform service delivery system design. We fuzzified only two risk factors, occurrence and severity, to more effectively assess the potential failure modes in service. Proposed fuzzy risk grades are applied to Gaussian membership function, defuzzified into Fuzzy Inference System, and eventually identified the ranks on the potential fail points.