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Baeg, Kang‐,Jun,Khim, Dongyoon,Jung, Soon‐,Won,Kang, Minji,You, In‐,Kyu,Kim, Dong‐,Yu,Facchetti, Antonio,Noh, Yong‐,Young WILEY‐VCH Verlag 2012 Advanced Materials Vol.24 No.40
<P>On page 5433, Yong‐Young Noh, Antonio Facchetti, Kang‐Jun Baeg, and co‐workers report that high performance ambipolar complementary inverters and ring oscillators are provided by a remarkable enhancement of both hole injection and transport for n‐channel dominant N2200 OFETs. The significant enhancement of hole mobility in N2200 OTFTs is attributed to the strong dipoles in fluorinated high‐k gate dielectric blend of P(VDF‐TrFE):PMMA. </P>
정혜진;김현태;김유선;정현걸;강윤경;문정섭 인제대학교 2011 仁濟醫學 Vol.32 No.-
Eosinophilic gastroenteritis is a rare disorder of unknown etiology characterized by presence of gastrointestinal symptoms, eosinophilic infiltratio n of one or more parts of gastrointestinal tract without involvement of other organs and absence of parasitic infestation. The clinical presentation depends on the extents and depths of eosinophilic infiltration. Mucosal involvement may result in abdominal pain, nausea, vomiting, diarrhea and weight loss. We report a case of eosinophilic enterocolitis in a 55-year-old female presented with abdominal pain and watery diarrhea resulting in recurrent acute renal failure.
황강진,박정욱,유희경 三陟大學校 2000 論文集 Vol.33 No.1
Cluster analysis is a technique for unsuoervised classification which the group information is not available. General cluster analysis uses euclidean distance as a measure of group similarity. However, it might cause some problem such as ignoring the pattern of the groups which is characterized by the relationships between variables. Hence general clustering method can lead to misclassification problem. It is worth considering mixture distributions for the classification. That is each cluster or group has its own distribution and they are mixed together. The main purpose here is to find which group has the maximum probability for each observation to be classified. EM algorithm is a useful technique to find the maximum likelifood estimator from incomplete data. In this paper, we assume that each group follows multivariate normal distribution and consider that the given data are incomplete because there is not the group information. We introduce new variable which indicates the group information. Then the augmented data becomes complete data. EM algorithm is used to estimated conditional expection for group information variable from the complete likelifood function. The effect of EM algorithm is compared to k-means clustering by misclassification probability.
김정민,김유현,강희두 高麗大學校 倂設 保健大學 保健科學硏究所 2000 保健科學論集 Vol.26 No.1
This study explored three sectors that one should know when he or she wants to use the PACS system. First, image acquisition, image saving and the quality of image output; Secondly, server and network; Thirdly, how to manage image saving and data base. The results were as follows; 1. Image Quality of PACS System 1) Image quality in the stage of image acquisition is affected by bit depth and matrix size. 2) Image quality in the stage of image saving is influenced by a compressed rate. Medical images are based n a principle of 2:1 non loss compress. 3) Image quality in the stage of image output is affected by monitor quality(brightness and the number of scanning line) 2. Server and Network 1) The use of server is different according to hospitals' scale. Clustering technique is used for main computer's DB because of system's stability. Doubling technique of power supply is also used. Ga-chun hospital and Baik hospital located in ll-san use Windows NT for the operating system of the server and other hospitals use UNIX. 2) ATM and Fast Ethenet is used for the Network that can transmit large data faster. In the case of hospitals that have PACS used the Network over 100 Mbps. There were two types of network construction-single network and double network. 3. Data saving and DB. 1) When choosing a saving media of PACS, speed and reliability and price are considered important categories. For short-term, RAID process is formed using HDD and long term Optical Juke Box is mainly used. 2) Oracle that is useful for large data management is used. 3) In the near future, HDD is going to be mainly used regardless of the short term or long term saving media and practical application of RAM Disk will increase.
이훈식,강영택,윤양진,정미라,유국종,서국웅,김정태 釜山大學校 附設 體育科學硏究所 1999 體育科學硏究所 論文集 Vol.15 No.-
The purpose of this study was to examine EMG changes of the body according to method the holding during carrying object. The experiments were conducted with utilizing EMG analyses for five male and five female adults as subjects. The results were as followed. 1. The higher muscle action potential of vertical holding was shown than that of right holding when carrying objects in MMH work in proportion to the weight of the object. The came from the subjects using their brachial muscles much to maintain the angles of their wrist joints and elbow joints for keeping their stable postures while walking. 2. The higher muscle action potential of right holding was shown in right and left elector-muscles of their spines(L1-L2, L4-L5) while carrying in all stages of weights except 25kg objects than that of vertical holding. These results were caused from more use of brachial muscles than elector-muscles of spines in carrying weight objects. So vertical holding is more effective in carrying weight objects at a short distance than right holding.
자매에서 발생한 중증 마이코플라즈마 폐렴에서 스테로이드 치료
김도희,이경일,김명숙,윤유숙,황자영,임정우,강진한,이준성 대한감염학회 2009 감염과 화학요법 Vol.41 No.3
Numerous evidences support the pathogenesis that M. pneumonias pneumonia is associated with cell-mediat-ed immune reaction. We report 2 cases of severe M. pneumoniae pneumonia in previously healthy sisters, who were both admitted during an epidemic of M. pneumoniae pneumonia. The elder sister, who was 16 years old, was admitted with M. pneumoniae pneumonia. She showed no response to treatment with clarithroycin and levo-floxacin, and eventually progressed to severe ARDS, requiring mechanical ventilation. After treatment with hydrocortisone (200 mg/day), there were rapid improvements in clinical manifestations and chest radiographic findings. The younger sister, who was 14 years old, was admitted 10 days later, Presenting with fever but no pneumonic lesions on chest radiograph. Just like her sister, the infection showed no response to clarithromycin. Fever persisted and pneumonic consolidation with mild pleural effusion was noticed in the left lower lobe on the 5th hospital-day. After treatment with oral prednisolone (1 mg/kg), she showed rapid defervescence and on the 8th hospital day, no pneumonic lesions were detectable on chest radiograph. Given the fact that the pathogenesis of pneumonia and extrapulmonary manifestations in M. pneumoniae infection is immune-mediated, an immuno-suppressive therapy would be validated for selected patients with M. pneumoniae infections.
京畿道의 植物相 : 태화산, 화야산, 대부도, 칠현산, 철마산, 검단산
崔道烈,張珍成,金正猷,全正壹,金輝,閔雄基,姜佑昌 서울대학교 수목원 2001 서울大學校 樹木園 硏究報告 Vol.- No.21
This study was conducted in order to explore general flora of the Gyounggi-do Province and to clarify the distribution of some specificated taxa of the Korea. Daebu-do Island, Mt. Taewha, Mt. Hwaya, Mt. Gumdan, Mt. Chilhyun and Mt. Chulma among eighth grade-area of the Degree of Green Naturality (DGN) within the boundary of the Gyounggi-do Province were visited to investigate local flora. The number of identified vascular plant species were as follow; Mt. Hwaya: 120 species (99 genera of 67 families), Mt. Teawha: 132 species (103 genera of 56 families), Daebu-do Island: 124 species (103 genera of 50 families), Mt. Chulma: 129 species (99 genera of 67 families), Mt. Gumdan: 121 species (96 genera of 52 families), Mt. Chilyun: 90 species (74 genera of 42 families). The endemic Clematis brachyura Maxim. was found to distribute Daeby-do. It seemed that plantation was occupying large area in forest of the Gyounggi-do Province. Forty two specificated taxa were identified and 3 taxa, 10 taxa, 5 taxa, and 24 taxa were sorted into forth grade, third grade, second grade, and first grade respectively. Mt. Taewha showed the highest record (16 taxa) in the number of specificated taxa, Mt. Hwaya was the next with 13 taxa. Mt, Chulma (12 taxa), Mt. Gumdan (11 taxa), Daebu-do Island (7 taxi), and Mt, Chylma (4 taxi) followed. Mt. Taewa and Mt. Whaya were found to be relatively higher in the score calculated front the specificated taxa distribution, while Daebu-do Island and Mt. Chilyun were lower, that difference was probably due in part to consequences of severe disturbance of human activities. With respect to the consequences of severe disturbance of human activities. With respect to the geographical proximity to the Gangwon Province, Mt. Hwaya showed higher similarity of the species composition to that of the Mt. Jumbong.