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김유일,Kim, Yu-Il 한국정보통신집흥협회 1996 정보화사회 Vol.103 No.-
CALS는 설계도, 메뉴얼, 화상 및 음성정보를 포함한 멀티미디어의 즉시교환으로 기업간의 개발 및 조달의 리드타입 단축으로 생산성을 향상시킨다.
늑간신경의 신경집종에 의한 늑간신경통 - 증례 보고 -
김유일,허현주,이지혜,임소망,김옥현,이한결 대한마취통증의학회 2019 Anesthesia and pain medicine Vol.14 No.2
Intercostal neuralgia is neuropathic pain that develops in the thorax and abdomen. It usually occurs as a result of injury or inflammation associated with the intercostal nerve triggered by trauma, surgery, or herpes zoster. Primary intercostal neuroma is a rare cause of intercostal neuralgia. A 69-year-old male patient without a history of thoracic trauma or surgery underwent repeated testing and intermittent treatment for refractory pain in the right chest and abdomen for several years. However, the treatment had limited effect. Abdominal computed tomography performed to diagnose recent pain aggravation revealed schwannoma of the 11th intercostal nerve. The patient’s pain was relieved following surgical excision of the tumor.
Extraction of the mode shapes of a segmented ship model with a hydroelastic response
김유일,안인규,박성곤 대한조선학회 2015 International Journal of Naval Architecture and Oc Vol.7 No.6
The mode shapes of a segmented hull model towed in a model basin were predicted using both the Proper Orthogonal Decomposition (POD) and cross random decrement technique. The proper orthogonal decomposition, which is also known as Karhunen-Loeve decomposition, is an emerging technology as a useful signal processing technique in structural dynamics. The technique is based on the fact that the eigenvectors of a spatial coherence matrix become the mode shapes of the system under free and randomly excited forced vibration conditions. Taking advantage of the simplicity of POD, efforts have been made to reveal the mode shapes of vibrating flexible hull under random wave excitation. First, the segmented hull model of a 400 K ore carrier with 3 flexible connections was towed in a model basin under different sea states and the time histories of the vertical bending moment at three different locations were measured. The measured response time histories were processed using the proper orthogonal decomposition, eventually to obtain both the first and second vertical vibration modes of the flexible hull. A comparison of the obtained mode shapes with those obtained using the cross random decrement technique showed excellent correspondence between the two results.
해외서지정보를 활용한 북한 과학기술 연구개발 트렌드 변화분석(1986~2019)
김유일(You Eil Kim) 한국콘텐츠학회 2021 한국콘텐츠학회논문지 Vol.21 No.4
대외적인 활동이 거의 없던 북한에서 최근 해외 논문발표가 급증하고 있다. 본 연구에서는 북한의 해외발표 논문을 계량분석하여 북한의 연구개발 동향변화를 파악하고, 향후 국내 연구자들과의 공동연구로 발전시킬 수 있는 가능성을 모색하고자 한다. 이를 위해 1986년 이후 북한 연구자가 포함된 해외발표논문을 대상으로 빈도분석과 네트워크 분석을 실시하였다. 분석은 저자, 연구기관, 국가, 연구분야 등을 대상으로 하였으며, 김정은 집권 전과 후로 구분하여 변화를 분석하였다. 분석결과에 따르면 김정은 집권 후 8년간 해외논문 발표가 급격히 증가하면서, 논문발표 상위 연구자나 연구기관, 공동연구 영향력 상위 연구자 등의 구성도 많은 변화가 나타났다. 김정은 집권 후 북한 연구자나 연구기관의 비중이 상대적으로 증가하였으며, 공동연구 영향력 상위 연구자들간 네트워크 컴포넌트가 형성되어 있어서 특정 연구주제에 집중하는 모습이 관찰되었다. 북한 연구자들의 주요한 해외 협동연구자나 연구기관은 중국의 비중이 높게 나타났다. In North Korea, where there was little external activity, the number of overseas academic paper publications has recently increased. This study aims to quantitatively analyze North Korean papers published abroad to identify changes in North Koreas research and development trends, and to explore the possibility of developing them through joint research with domestic researchers in the future. To this end, since 1986, frequency analysis and network analysis have been conducted on papers published overseas including North Korean researchers. The analysis was conducted on authors, research institutes, countries, and research fields, and changes were analyzed before and after Kim Jong-un took office. According to the results of the analysis, as the number of foreign papers published rapidly increased during the eight years after Kim Jong-un took office, the composition of the top researchers, research institutes, and researchers with high influence in joint research also changed a lot. After Kim Jong-un came to power, the proportion of North Korean researchers and research institutes increased relatively, and a network component was formed between researchers with high influence on joint research, so it was observed that they focused on specific research topics. It was found that the major foreign collaborators or research institutes of North Korean researchers were from China.
김유일,오정학,김인혜,윤홍범 한국조경학회 1998 韓國造景學會誌 Vol.26 No.3
Landscaping on artificial ground is currently served as a means to imposing a greenery benefit on high-density and high-rise apartment sites. It functions as a sub-hierarchy in apartment planning such as ornamental element from the past. Major parking space tends to be allocated on the basement area in response to the required parking regulation. Therefore, competitive relatioinship between the parking and greenery space I limited outdoor of apartments leads to the development planning strategy and technology of artificial ground. This study aims at evaluating landscape planning on artificial ground of apartment complex through several approaches such as site survey, plan drawing analysis, and interview with related field experts. 15 survey apartment sites including Bundang Model, Shindaebang-dong, Pyoungchon Hyundai Apartments have been selected for conducting the research. Main results of this study are summarized below : First, scattering allocation of artificial ground between apartment building units is a dominant plan layout type among the survey sites. Even though unifying allocation type has an advantage to maximize underground parking space, it has a difficulty in maintaining proper soil ground base for nurturing plants. Therefore, underground parking space should be planned by unifying allocation type placed separately from apartment units. This plan type can provide a balanced planting between soil and artificial ground on surface level. Second, It is strongly recommended to integrate the whole planting base which involves architectural structure, drainage, and water proofing above the planting design. When considering that process as a professional subject dealing with natural material such as trees and shrubs, those tasks should be directed by landscape architectural divison and landscape architect. And planting area for artificial ground has to be specified in initial phase of architectural design. This step provides an opportunity to make a proper decision on structural load, drainage, and water proof design as an integrated part of the management.