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      • 입체 디지털 아이템의 MPEG-21 DIA 테스트베드 구현

        손현식,김학수,홍동희,김만배 강원대학교 정보통신연구소 2004 정보통신논문지 Vol.8 No.-

        Digital Item Adaptation (DIA), which is one of main parts of MPEG-21 provides users with adapted digital items according to User Preferences as well as Terminal Capabilities. The main purpose of our research is to develop DIA Testbed, where stereoscopic digital items are adapted and transmitted in MPEG-21 multimedia framework For User Preferences, there are stereoscopic parallax types, the range of depth, and the maximum delayed frame. Terminal Capabilities is composed of codec (encoder/decoded), stereoscopic rendering formats, and types of display device. The descriptors defined in MPEG-21 DIA are used, while clients communicate with DIA server. The DIA server adapts the resource of the digital item according to the properties of the descriptors and transmits the adapted digital item to the client. The resource (e.g., MPEG-1) is adapted/converted into either MPEG-2 or MPEG-4. Furthermore, a network interface module (NIM) based upon RTP/RTSP/UDP has been developed to transmit the adapted digital item for realtime streaming.

      • 골격계의 원발성, 전이성 혈관외피세포종 : 증례 보고

        김동수,김용민,최의성,손현철,박경진,조병기,이형준 충북대학교 의과대학 충북대학교 의학연구소 2009 忠北醫大學術誌 Vol.19 No.2

        혈관악성종양은 혈관내피종(hemangioendothelioma), 혈관육종(angiosarcoma), 혈관외피세포종(hemangio pericytoma) 및 카포지 육종(Kposi's sarcoma) 등이 있으며, 이 중 혈관외피세포종은 비전형적인 외피 세포가 증식된 경우를 말한다. 골의 혈관외피세포종은 드문 악성종양으로 문헌상 보고되어 있는 예들은 주로 성인의 대퇴골, 골반골에 발생된 경우이다. 이 경우 원발성은 드물며 주로 비골격계에서 기원하여 골로 전이되어 발생하는 것으로 알려져 있다. 남녀 발생 빈도는 거의 동일하며, 12세부터 90세까지 어느 연령층에서도 발생할 수 있으나, 호발 연령은 40대에서 50대 사이 이다. 대개 연부조직 종양으로 신체 어디에서도 일어날 수 있고, 하지 특히 서혜부 및 대퇴부에서 가장 많이 발생하며, 후복막, 두경부 및 흉복부의 순으로 나타난다. 전이도 빈번하게 발생하는데, 그 경로는 주로 혈행성으로, 발생부위는 폐와 골이 제일 많다. 저자들은 8년 전, 우측 아래턱의 원발성 혈관외피세포종으로 절제술을 시행한 환자에서 술후 3년 뒤, 우 경골 근위부에 원격 전이가 발생하여 절제술, 예방적 골수강내 금속정 삽입술 및 골시멘트 충전술을 시행하였다. 현재 2차 수술 후 5년여가 경과한 상태로 경골에 재발의 증거가 없어 만족할 결과를 가져다주었다고 판단하여 문헌 고찰과 함께 보고하는 바이다. Hemangiopericytoma is a rare tumor of blood vessels, first described and named by Stout and Murray in 1942, arising from the contractile, elongated cells the pericytes of Zimmermann which surround capillaries. It can develop whereever there are capillaries and mostly in the connective tissue of the human body. It can also develop in any age from 12 to 90 years, and the rate of metastasis and prognosis depend on its histologic grade. We report a case of hemangiopericytoma metastasized to the right proximal tibia from the right mandible, resected three years ago. The hemangiopericytoma is a extremely rare primary malignant tumor in the bone and bone to bone metastasis is never been found in the literature before. So, we report this case and also report the good result.

      • ZnS : DyF₃ 교류 박막 EL소자의 제작과 특성조사

        현동걸,손상호,박태성,이동헌 경북대학교 산업기술연구소 1990 産業技術硏究誌 Vol.18 No.-

        EL device of which rare-earth floride DyF_3 doped in ZnS host is fabricated and measured its electric and optical characterics in our experiment. Its optical spectrum is depend on active layer and host, and the changes of the substrate te,perature during fulfilled deposition process is partcipated improving of crystallity of the active active layer. Annealing processes help removing the film distortion of active layer and improve the crystallity of internal of the grain. However, it may not affect the changes of the grain size. The enhamcement of crystallity resulted from the changes of the substrate temperature and the re-crystallization of luminance center be caused by annealing improved brightness and efficiency of EL device. Brightness of which device constructed in our experiment is 128cd/㎡ in 1KHz sinusoidal wave. And it emited whitish-yellow light which wavelength is 570㎚.

      • 14세 여환에서 쇄골에 발생한 동맥류성 골 낭종 : 증례보고

        김동수,김용민,최의성,손현철,박경진,조병기,홍경호 충북대학교 의과대학 충북대학교 의학연구소 2010 忠北醫大學術誌 Vol.20 No.1

        동맥류성 골낭종(aneurysmal bone cyst)은 Jaffe와 Lichtenstein(1942)에 의해 처음 기술된 이래 많은 증례가 보고되었다. 동맥류성 골낭종은 주로 장관 골의 골간단과 척추에서 발생한다. 병인은 정확히 밝혀지지 않았으나, 반응성 현상으로 생각되며, 원발성 또는 다른 병변과 동반될 수 있다. 쇄골 등 기타 골에서 발생하는 경우는 매우 드물다. 저자들은 우측 쇄골에서 동맥류성 골낭종 1예를 경험하여 보고하는 바이다. 14세 여자환자가 우측 견갑부의 우연히 발견된 종괴를 주소로 내원하였다. 환자는 종괴에 대해 이학적 검사 및 혈액 검사상 측이한 소견을 보이지 않았다. 방사선 검사상, 쇄골 내측부에 골 용해성으로 팽윤된 병변이 관찰되었고, 동맥류성 골낭종, 단순 골낭종, 전이성 골종양 등의 의증 하에 절제술을 시행하였다. 절제된 종괴의 육안 소견상, 얇은피질 골로 쌓여 있으며, 노란색 액체로 차있는 4x5cm 종괴가 관찰되었고, 완전 절제술을 시행하였다. 광학현미경상, 혈액으로 차있는 다양한 크기의 낭성 구조가 보였고, 여러 개의 거대세포가 격막을 이루고 있었다. 조직학적 소견과 MRI소견, 임상 소견을 종합하였을 때, 쇄골에서 원발성으로 발생한 동맥류성 골낭종을 진단할 수 있었다. Many cases of aneurysmal bone cyst(ABC) have been reported since Jaffe and Lichtenstein(1942) first reported. Aneurysmal bone cyst mostly occurs in metaphysis of the long bones and vertebral column. The reason for this disease has not be clearly explained yet, but it is estimated as reactive change and can be accompanied with primary lesion or another lesion. It rarely occurs in clavicle or other bones. We report one case of ABC in right clavicle. 14-year-old female patient who accidentally found palpable mass on right shoulder visited hospital. We did not find any specifics regarding this patient's mass after physical exam and blood test. Radiologic exam showed a large expansile mass with osteolytic lesion, The differential diagnosis includes ABC, simple bone cyst, metastatic bone tumor, etc. Based on visual observation on excised 4×5 cm mass, it was covered by thin cortical bone and filled with yellow fluid, and complete excision was done. On histological examination, the mass consist of various size of cystic structures. and several giant cells comprised septae. Based on histological examination, MRI, clinical examination, we made a diagnosis that it was primary anuerysmal bone cyst in clavicle

      • 忠州市 主幹線 道路邊 建築外部色彩에 關한 硏究

        崔生吉,孫泰鎭,柳顯紀,辛同寅,梁富弘,尹勝照,朴碩鉉 忠州大學校 1998 한국교통대학교 논문집 Vol.33 No.2

        In order to understand the influence of colours on the urban design of a city, a portion of the central Chung-Ju was chosen as the study area, and three cases were researched as colours. These surveyed colours are analysed in their hue, value and chroma. It was necessary to determine the colours of 272 buildings exterior in all in order formulate the findings presented in this study. The result of this study can be briefly summerised as the following ; 1) The trends in the use of colour turn out like this ; 55.3% of the building were Y(yellow), YR(yellow-green), R(red) Family in Hue, abour 33.9% of them were within 8.0-8.9 and 26.6% were within 7.0-7.9 on the value scale, and about 48.5% of them were within 1.0-1.9, 2.0-2.9 and 3.0-3.9 on the chroma scale. 1) For case 1 on the exterior colours of buildings, about 57.8% were Y and YR family in Hue, about 53.7% were 8.0-8.9 and 7.0-7.9 in Value, and about 49.6% of them were within 1.0-3.9 in chroma. 2) For case 2 on the exterior colours of buildings, about 52.4% were Y and R family in Hue, about 65.1% were 7.0-8.9 in Value, and about 46% were 1.0-2.9 in Chroma. 3) For case 3 on the exterior colours of buildings, about 55.7% were Y and YR Family in Hue, about 72.1% were 7.0-8.9 in Value, and about 31.1% were 2.0-2.9 in Chroma. In summary, the colours of the building surveyed in central Chung-Ju can be characerized as Y, YR, R, N family in Hue, 7.0-7.9, 8.0-8.9 in Value registered in 1.0-1.9, 2.0-2.9, 3.0-3.9 in Chroma. The observed exterior colours show a tendency toward Yellow in Hue, High in Value and low in Chroma. Generally, the majority of the colours is light rather than strong in tone.

      • 평면에서 형상정보를 갖는 물체의 접촉 해석

        전경진,손정현,강동권 동의공업대학 2001 論文集 Vol.27 No.1

        This paper presents a method for calculating contact force of any shaped rigid bodies on plane. Every integration time step, the proposed method finds expected contact point on their outlines and then calculates penetration and contact force. This paper is using the continuous analysis method to calculate contact force. To get the accurate expected contact point on their outlines the new algorithm is developed. Through the comparison with DADS, we can prove the accuracy of the proposed algorithm.

      • 쥐의 조직을 이용한 glutamine 선택성 sensor 개발에 관한 연구

        김의락,손병기,임동준,배진현,최성문 경북대학교 센서기술연구소 1991 센서技術學術大會論文集 Vol.2 No.1

        The various types of enzyme have been coupled to ion-selective electrodes for the development of enzyme membrane electrodes. The tissue and organ of animals and plants contained a lot of variant enzymes. A bioselsoective membrane electrode which employs slices of Wistar rat liver was studied that the effect of pH, kinds and concentration of buffer solution, temperature and thickness of slice in order to optimize electrode response. The longstability, the response time and slope of wistar rat tissue glutamine selective membrane electrode was evaluated.

      • 플라즈마 표지소자의 제작

        이상윤,라병욱,박동수,황인헌,이덕동,신영남,박성배,이동욱,박용석,박형근,손상호,권태근,채경락,정경득 慶北大學校 自然科學大學 1986 自然科學論文集 Vol.4 No.-

        An Ac-type Plasma Display Panel (PDP) operating with Ne-Ar(0.1%) Penning mixture gas is fabicated. The characterics of the panel with electrodes covered with thin and thick dielectric layers are studied. The brightness of the Neon-orange light emitted by the panel measured as function of applied voltage and frequency. As an application, a graphic display system equipped with PDP showing still and moving pictures is made.

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