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영동지방 강설량의 경년변화 특성 및 북태평양 SST와의 관계
양동현,류찬수 조선대학교 사범대학 부설 교과교육연구소 2001 敎科敎育硏究 Vol.4 No.1
The characteristic of snowfall at Youngdong area is a key factor which determine the climatology of Korean peninsula. Although the location and characteristic of both cP and mT air-mass are an important factor which determine the snoefall, the Sea Surface Temperature(SST) of the North Pacific as a source of moisture can be a key factor too. To investigate the variation of anowfall at Youngdong area, therefore, we studied the intercorekation of variation between snowfall at Youngdong and SST at North Pacific. The period of dataset used in this study is for 18 years: from 1981 to 1998. The spatial distribution of SST at East-Sea depends on the movement of warm sea current caused by both Dongahn current and coastal current near Japan. According to this study, there were expanding of Siberia high pressure system toward both Younhaejoo and China, generation of mesoscale cyclone at Korean peninsula, and northerly wind which flow along coast line with partially north-easterly wind when there was a heavy snowfall at Youngdong area. This means that the high value of SST at Youngdong area during heavy snoefall dervie increasing of senible heat flux over sea surface, increasing of easterlly wind, and decreaseing of air pressure. These processes were the main factors which played an important role for the increasing of moisture convergence and snowfall at Youngdong area. For the occurrence of heavy snowfall at Youngdong area, the following synoptic conditions are required: 1) The high pressure system of Siberia should be expanded toward Yonhaejoo, 2) development of cyclone over northern part of Korea, 3) there is a cyclone at East-Sea. In thoses synoptic condition, there are north-easterly wind influenced by strong sensible and latent heat fluxes from warm sea surface to the lower atmosphere. There heavy snowfall at Youngdong area can be expected in those situation.
제주도 함덕연안해역의 해황·기상의 계절변동에 관한 연구
양성기,최찬문,김해동 濟州大學校海洋硏究所 1995 해양과환경연구소 연구논문집 Vol.19 No.-
Time series data of oceanic and meteorological elements observed by Marine Research Institute, Cheju National University are used to investigate seasonal variabilities in oceanic and atmospheric conditions. Heat ?? elements at the sea surface are derived from the data of the marine meteological reports by applying an aerodynamical bulk method. The seasonal variation of serveral heat flux elements were abnormal during the analysed period(June,1993 ∼ September, 1995), and it might be related to global-scale changes in the ocean-atmosphere system. And the oceanic condition of the northern Cheju Island was sensitive to the insolated solar radiation.
원광대학교병원 응급실에 내원한 치과 응급 환자에 대한 임상적 연구
이동근,민승기,양찬영,문철,김종구 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.1
This is a retrospective clinical study on 3,243 patients who had visited the Emergency Room of Wonkwang University Hospital and then been treated in the Department of Oral and Maxillofacial Surgery during recent 5 years from Jan. 1, 1996 to Dec. 31, 2000. The obtained results were as follows : The total number of patients was 3,243 and the ratio of sex was 1.86:1. The highest monthly incidence was shown in October and March to 19%, and the age distribution peaks was the 3rd decade(24.7%), followed by the 1st(21.7%) and the 4th decade(15.7%). The percentage of admission were 4.8%. The frequent cause of admission were facial bone fracture(70%), infection(16%), soft tissue injury(14%). Trauma(70.9%) was the most frequent cause in dental emergency patients, odontogenic infection(24.3%), oral hemorrhage and TMJ dislocation were next in order of frequency. About the cause for trauma, traffic accident was the most, and fall down, slip down injury and assault were followed. Soft tissue injury group(56%) was the most prevalent, followed by tooth injury group(27%) and facial bone injury group(17%). In facial bone injury group, the mandibular fracture(55%) showed the highest incidence followed by zygomaticomaxillary complex fracture, nasal bone fracture, maxilla fracture, and zygomatic arch fracture. In the mandibular fracture, symphysis(40%) was the most common location followed by condyle(29.4%), angle(22.1%), and body area(8.5%). Tooth fracture showed the highest incidence as 35% followed by subluxation(29%), avulsion(20%), and concussion(16%). In infection patients group, the ratio of admission was 5.8% and the major visiting cause was acute pulpitis(32.3%). The major treatment method was the incision and drainage(30%) followed by endodontic treatment(28%), curettage(22%), extraction(7.8%), and so forth. In TMJ dislocation group, the highest incidence age was 3rd decade and 4th decade(51%). In post-operative bleeding group, the major cause of bleeding was non-fulfillment of doctor's instruction and bleeding was almost stoped by only gauze biting.
김성철,양동훈,송찬후,전형순 정보통신정책학회 2005 정보통신정책연구 Vol.12 No.1
RFID는 차세대 유비쿼터스 환경에서 중요한 기술적, 산업적인 위치를 차지할 것으로 주목받고 있는데 향후 다양한 분야에서 새로운 시장을 창출할 것으로 기대되고 있다. 본 연구는 RFID 확산으로 인해 야기되는 정보보호 이슈들에 대응하기 위한 기업차원의 주요전략에 대해 고찰한다. 우선 RFID의 개요와 RFID관련 정보보호 문제들을 개관한 후 주요 선진국의 법제도적인 그리고 기술적인 차원에서의 대응을 분석한다. 이러한 분석을 바탕으로 RFID를 공급하는 기업의 입장에서, RFID를 적용하는 수요기업의 입장에서 그리고 정부 입장에서의 전략적인 대응방안을 도출한다. RFID (radio frequency identification) as a form of next-generation barcode has received a great deal of attention in the commercial world over the couple of years. In spite of the promise of enhanced efficiency and accuracy, RFID raises privacy and information security issues. This paper examines privacy and information security issues and describes current legal actions and technical solutions. In addition, this paper suggests that RFID vendors, users and government need to develop careful strategies coping with RFID security challenges to enjoy the magic of RFID.
남성진,이동욱,박찬규,정시욱,김추성,조성래,구본천,양사규,이일웅,박정자 慶北大學校 醫科大學 1997 慶北醫大誌 Vol.38 No.2
Castleman' s disease is a rare, reactive lymphoid proliferation of unknown cause and pathogenesis. Depending on histololgic findings, it has been divided into two distinct histologic subtypes that include hyaline-vascular type(90%) and plasmacell type(10%). This disease occurs most commonly in mediastinal lymph nodes and cervical lymph nodes, inguinal lymph nodes respectively. But occurs rarely in retroperitoneum. We report a case of hyaline-vascular type asymptomatic Castleman' s disease of the retroperitoneum in a 47-year-old man.