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고속의 실시간 MPEG-2/H.264 transcoding 구조 제안
홍용택,이경호,김진상,조원경 경희-다반 ASIC 설계교육센터 2006 경희-다반 ASIC센터 논문집 Vol.7 No.-
H.264 비디오 코딩 표준은 기존 비디오 코딩 표준에 비해 뛰어난 압축부호화 효율로 인해 차세대 비디오 표준으로 각광받고 있으며 H.264가 가진 잠재적인 영향력 때문에 오늘날 디지털 비디오 시스템의 주를 이루고 있는 MPEG-2 시스템을 대체할 것으로 보여진다. 현재 MPEG-2 시스템이 광범위하게 자리 잡고 있기 때문에 H.264 시스템으로의 완전한 이동은 다소 시간이 걸릴 것으로 예상되고, 따라서 트랜스코딩 기술이 중요하게 대두되고 있다. 트렌스코더는 디코더와 인코더를 포함한 구조이기 때문에 매우 많은 연산량이 요구되며 그 복잡도를 줄이는 것이 중요하다. 본 논문에서는 디코딩 과정에서 추출된 정보를 인코딩 과정에 재사용함으로써 복잡도를 줄이도록 하였고, 또한 H.264에서 연산량이 많은 부분들을 여러 가지 알고리즘을 통해 복잡도를 줄임으로써 보다 빠른 속도로 동작이 가능한 트랜스코더 구조를 제안하였다.
제 1형 신경섬유종증 환자에서 발생한 위장관 간질종양 1예
원경준,이준,변유미,조민근,한경택,김원,홍란,임성철,김경종,김영대,박찬국,김만우 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.2
Gastrointestinal stromal tumor (GIST) is the most common non-epithelial neoplasm arising in the gastrointestinal tract, but this tumor is rarely seen in association with type l neurofibromatosis (NFl) Generally, the majority of GISTs are isolated neoplasm and they are sporadically found in the stomach, but the GISTs in NFl patients are usually multiple and usually found in the small intestine. We report a case of multiple GISTs in the jejunum of a 63-year-old woman diagnosed as NFl accompanied by complication of gastrointestinal bleeding, In this case, Patient had multiple cafe-au lait spots and neurofibroma on skin and had freckling on axilla and groin, and then, we made a diagnosis of NFl. Gastrointestinal bleeding is controlled by resection of multiple GISTs. Generally, only 3-5% of all gastrointestinal bleeding comes from the small bowel. Causes of small intestinal bleeding are angiodysplasia, neoplasm, NSAIDs induced ulcer etc. but, If patients have NFl accompanied by complication of gastrointestinal bleeding, GISTs on small bowel must be considered.
혼합형 자가면역성용혈성빈혈과 동반된 Evans 증후군 1례
선길홍,윤찬영,박상곤,박경희,우정주,한경택,김진화,김영훈,정춘해,박치영 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.2
Evans syndrome is defined as a simultaneous or sequential occurrence of autoimmune hemolytic anemia and autoimmune thrombocytopenia. Autoimmune hemolytic anemia (AIHA) is usually induced by IgG warm autoantibody or cold-active IgM antibodies reacting specifically with antigens associated with a patient's RBC. AIHA is a fairly uncommon disorder, with estimates of the incidence at 1 to 3 cases per 100,000 per year. Mixed-type AIHA is a relatively uncommon form of AIHA, with studies noting the incidence of 7-8% among cases of AIHA. We experienced a patient, 46-year-old woman who was diagnosed having a very rare clinical presentation of mixed warm and cold antibody mediated Evans syndrome. She was treated with corticosteroid therapy only and has been maintaining a complete response for 15 weeks. 저자들은 혼합형의 자가면역성 용혈성 빈혈과 자가면역성 혈소판 감소증이 동시에 발생한 혼합형 Evans 증후군으로 진단하고 스테로이드 요법 후 혈액학적으로 회복된 상태로 15주가 지난 현재 steroid 5 mg/일 까지 감량한 상태에서 추적 관찰 치료중인 46세 여자 환자를 경험하였기에 문헌 고찰과 함께 보고하는 바이다.
도착 및 공평할당비율을 이용한 GFR 서비스 트래픽 제어 기법
김남희,정경택,박기홍 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-
The Guaranteed Frame Rate(GFR) service has been designed to accomodate non-real-time applications and it is not only guarantees a minimum throughput at the frame level, but also supports a fair share of available resources. In this paper, we propose a cell scheduling scheme which can improve the fairness and the goodput through the traffic control in GFR service. For the evaluation of the proposed scheme, we compare the proposed scheme with the existing scheme in the fairness and the goodput. Simulation results show that proposed scheme can improve the fairness and goodput comparing with the existing buffer management scheme.
타리비드 정(오플록사신 100㎎)에 대한 파비드 정의 생물학적동등성
박완수,조성희,이헌우,임호택,홍성제,서성훈,류재환,이경태 한국약제학회 2005 Journal of Pharmaceutical Investigation Vol.35 No.1
The purpose of the present study was designed to evaluate the bioequivalence of two ofloxacin tablets, Tarivid (Jell Pharm. Co., Ltd.) and Favid (ILHWA Co., Ltd.), according to the guidelines of Korea Food and Drug Administration (KFDA). Twenty-four normal male volunteers, 23.67±3.12 year in age and 68.50±7.23 kg in body weight, were divided into two groups and a randomized 2x2 cross-over study was employed. After four tablets containing 100 mg of ofloxacin were orally administered, blood was taken at predetermined time intervals and concentrations of ofloxacin in plasma were deter mined using HPLC. Pharmacokinetic parameters such as AUC_(t) and T_(max) were calculated and ANOVA test was utilized for the statistical analysis of the parameters using logarithmically transformed AUC_(t), and C_(max) and untransformed T_(max). There were no sequence effects between two formulations in these parameters. The 90% confidence intervals for the log transformed data were acceptance range of log 0.8 to log 1.25 (e.g., log 0.94-log 1.04 and log 0.90-log 1.07 for AUC_(t) and C_(max) respectively). The major parameters. AUC_(t) and C_(max) met the criteria of KDFA for bioequivalence indicating that Favid tablet is bioequivalent to Tarivid tablet.
장언량,박영훈,염창홍,서국웅,이경순,강영택,양충모 釜山大學校 附設 體育科學硏究所 2004 體育科學硏究所 論文集 Vol.20 No.-
Of the fencing club members at D university in B city, the four skilled members and the 4 unskilled members were selected. The MVC of the left brachioradialis, right brachioradialis and left flexor carpi radialis, right flexor carpi radialis each was measured in each group according to the striking directions as they act 'striking left right head'......
Immunotherapy in Pediatric Hematologic Malignant Neoplasms
Kyung Taek Hong 대한소아혈액종양학회 2020 Clinical Pediatric Hematology-Oncology Vol.27 No.1
Childhood acute leukemia has achieved tremendous treatment outcome improvement over the past several decades. Given that pediatric leukemia remains the most common type of childhood malignant tumors, there are still unmet needs in relapsed/ refractory diseases. Moreover, reducing the toxic adverse effects of chemotherapy is another big challenge. Over the past decades, immunotherapy in pediatric leukemia has achieved significant improvement. This review will focus on the recent development and achievement of bi-specific T-cell engagers, antibody-drug conjugates, and chimeric antigen receptor T cell therapies in pediatric leukemia. Moreover, several prevalent obstacles in administering these treatments will also be discussed. Based on the characteristics of each treatment, a variety of clinical trials are currently underway. As a new treatment modality, immunotherapy should be optimally applied based on disease conditions.
Homographic Tracking Algorithm of Moving Objects for Multiple Video Surveillance System(ICCAS 2012)
Kyung-Taek Hong,Jae-Hong Shim,Byoung-Doo Kang,il-Kyun Jung 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10
When a video surveillance system tracks a specific object, it is very important to get quickly the information of the object through fast image processing. Usually one camera surveillance system for tracking the object made results in various problems such like occlusion, image noise during the tracking process. It makes difficulties on image based moving object tracking. Therefore, to overcome the difficulties the multi video surveillance system which installed several camera within interested area and looking the same object from multi angles of view could be considered as a solution. If multi cameras are used for tracking object, it is capable of making a decision having high accuracy in more wide space. This paper proposes a method of recognizing and tracking a specific object like a car using the homography in which multi cameras are installed at the crossroad.
Kyung Taek Hong,Yeon Jun Kang,Jung Yoon Choi,Young Ju Yun,Il-Moo Chang,Hee Young Shin,Hyoung Jin Kang,Won-Woo Lee 고려인삼학회 2024 Journal of Ginseng Research Vol.48 No.1
Background: Although the survival outcomes of childhood cancer patients have improved, childhood cancersurvivors suffer from various degrees of immune dysfunction or delayed immune reconstitution. This studyaimed to investigate the effect of Korean Red Ginseng (KRG) on T cell recovery in childhood cancer patients whounderwent autologous hematopoietic stem cell transplantation (ASCT) from the perspective of inflammatory andsenescent phenotypes. Methods: This was a single-arm exploratory trial. The KRG group (n = 15) received KRG powder from month 1 tomonth 12 post-ASCT. We compared the results of the KRG group with those of the control group (n = 23). Theproportions of T cell populations, senescent phenotypes, and cytokine production profiles were analyzed at 1, 3,6, and 12 months post-ASCT using peripheral blood samples. Results: All patients in the KRG group completed the treatment without any safety issues and showed a comparableT cell repopulation pattern to that in the control group. In particular, KRG administration influenced therepopulation of CD4+ T cells via T cell expansion and differentiation into effector memory cell re-expressingCD45RA (EMRA) cells. Although the KRG group showed an increase in the number of CD4+ EMRA cells, theexpression of senescent and exhausted markers in these cells decreased, and the capacity for senescence-relatedcytokine production in the senescent CD28- subset was ameliorated. Conclusions: These findings suggest that KRG promotes the repopulation of CD4+ EMRA T cells and regulatesphenotypical and functional senescent changes after ASCT in pediatric patients with cancer.