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전원선,이상철,김현정,배상병,김찬규,이남수,박노진,이규택,박성규,홍대식,박희숙,원종호 순천향의학연구소 2007 Journal of Soonchunhyang Medical Science Vol.13 No.2
Thymoma is associated with myasthenia gravis, Pure red cell aplasia, and autoimmune diseases such as autoimmune hemolytic anemia, aplastic anemia, and hypogammaglobulinemia. It's association with aplastic anemia is rare and aplastic anemia appearing after surgical removal of thymoma is especially rare. The authors hereby report a case of aplastic anemia occuring in a patient who was diagnosed with thymoma and myasthenia gravis and had the tumor surgically removed. The patient was treated with anti-thymocyte globulin, cyclosporin, and prednisolone, and showed partial remission with hematologic improvements after 12 months.
실시간 태스크의 마감시간 만족을 위한 캐쉬 메모리의 최적 분할 형태의 분석
주수종,전홍대,김명희 圓光大學校 1996 論文集 Vol.32 No.2
본 논문은 실시간 시스템에서 주기 및 비주기적 태스크들의 마감시간 만족을 위한 캐쉬 메모리의 최적 분할 형태를 얻음으로써 태스크들에 대한 메모리 가용성을 늘릴 뿐 아니라 유휴 메모리 사용공간을 다른 태스크들에게 충분히 할당하여 마감시간 위반율을 줄이는데 목적을 둔다. 이를 위해 본 논문에서는 실시간 태스크들을 캐쉬 메모리의 분할 공간상에 최적으로 할당될 수 있도록 하기 위해 캐쉬 메모리 분할 알고리즘을 제시한다. 연구의 결과를 도출하는 과정으로 실시간 태스크들이 할당될 수 있는 다양한 캐쉬 메모리의 분할 형태들과 이들에 대한 태스크의 최소 가용 비용들을 얻는다. 이를 기반으로하여 실시간 태스크들에게 각각 주어진 마감시간 이내에서 실행을 할 수 있는지를 Rate Monotonic 스케쥴링 알고리즘을 응용하여 스케쥴링 가능한 캐쉬 메모리 분할 형태들을 모두 얻고, 이들로부터 스케쥴링 가능한 가용비용의 한계범위와 최소의 가용비용을 갖는 캐쉬 메모리 최적 분할형태를 보였다. This paper presents a study on the cache(memory) partitioning configurations for meeting deadlines of periodic and aperiodic task set. The purpose of this study is not only to increase the cache utilization, but also to decrease the deadline missing ratio of each task. We discuss the optimal cache partitioning problems for real-time task set. Base on the task execution time and utilization, we suggest the cache partitioning algorithm which computes the segment allocation for a given task set, respectively. The schedulability of task set depends upon task properties and the algorithm used to schedule the tasks. Here, we used the rate monotonic scheduling algorithm modified for considering all periodic tasks and aperiodic tasks together. We checked whether tasks assigned on the configurations are possible to meet the their deadlines or not. We obtained the schedulable configurations, and analyzed the utilization bound of the cache optimal partitioning configuration which the task set is schedulable if its utilization is below a certain bound.
악성림프종 환자에서 복합화학요법으로 유발된 백혈구 감소증에 대한 인형 재조합 과립구 집락형성-촉진인자(rhG-CSF: Neutrogin)의 효과
박성규,전진우,기신영,유병우,김홍수,백승호,원종호,홍대식,박희숙 순천향의학연구소 1995 Journal of Soonchunhyang Medical Science Vol.1 No.1
Clinical effects of rhG-CSF were investigated in 17 patients receiving chemotherapy for non-Hodgkin's lymphoma. Patients were given G-CSF 2㎍/㎏/day after 2nd cycle chemotherapy for least 14 consecutive days, and clinical and laboratory results were compared to results of the first cycle. Treatment with G-CSF resulted in increase of mean WBC count(952.9±152.2㎜³vs 1882.4±350.4/㎜³) and neutrophil count(212.9±53.0/㎜³vs 841.5±238.0/㎜³), reduced the duration of leukocytopenic days(12.4±1.3 days vs 5.5±1.0 days, WBC count less than 4000/㎜³) and neutropenic days(4.5±0.9 days vs 2.3±0.7 days, neutrophil count less than 500/㎜³), and reduced the duration of neutropenic fever(5.8±1.1 days vs 0.9±0.5 days). The side effects of G-CSF were not so significant. These results demonstrated that G-CSF is safe and useful for the treatment of neutropenia induced by anticancer chemotherapy of non-Hodgkin's lymphoma and reducing the incidence of febrile periods and duration of antibiotic administration.
중추신경자극제를 사용할 수 없는 주의력결핍과잉행동장애 아동에서의 Modafinil 효과 : 예비 연구
유한익,김진용,박수진,전정원,왕희령,김붕년,홍진표,김성윤,김창윤 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.6
Objectives : This study was aimed to examine the efficacy and safety of modafinil in psychostimulant-inapplicable children with attention deficit hyperactivity disorder (ADHD) due to insufficient treatment response or intolerable adverse effects. Methods : Fifteen children (8.8±1.8 years, 14 boys, total IQ 107.22±13.4) were recruited for this study. ADHD was confirmed by K-SADS-PL. The efficacy was assessed by ADHD rating scale (ADHDRS), Conner's parental rating scale-revised(CPRS-R), ADHDRS school version, clinical global impression (CGI) and computerized neurocognitive function test. Mean dose of modafnil was 250. 0±103.3 mg. Results : Total score (p=0.012) and hyperactive/impulsive score (p=0.021) of ADHDRS for investigator, as well as CPRS-R score (p<0.01) and CGI-severity score (p<0.01) were significantly reduced after 39.2±8.7 days of modafmil administration. Response time of word color test was also significantly decreased after medication. Decreased appetite (2 subjects), insomnia (2 subjects), irritability (1 subject) and alopecia (1 subject) were observed during this study period. Conclusion : Modafinil was effective and well-tolerated for the psychostimulant-inapplicable children with ADHD.
Negative gate bias and light illumination-induced hump in amorphous InGaZnO thin film transistor.
Jeon, Jae-Hong,Seo, Seung-Bum,Park, Han-Sung,Choe, Hee-Hwan,Seo, Jong-Hyun,Park, Kee-Chan,Park, Sang-Hee Ko American Scientific Publishers 2013 Journal of Nanoscience and Nanotechnology Vol.13 No.11
<P>While observing the transfer characteristics of a-IGZO TFTs, it was noticed that a hump occurred in the subthreshold regime after light and bias stress. This study analyzes the mechanism of the hump occurrence. It was determined that hump characteristics were related with parasitic TFTs which formed at the peripheral edges parallel with the channel direction. It seems that the negative shift of the transfer characteristics of parasitic TFTs was larger than that of the main TFT under light and bias stress. Therefore, the difference in the negative shift between the main TFT and the parasitic TFT was the origin of the hump occurrence. We investigated the instability of a-IGZO TFTs under negative gate bias with light illumination for various channel structures in order to verify the above mechanism.</P>
Chemosensitivity is controlled by p63 modification with ubiquitin-like protein ISG15.
Jeon, Young Joo,Jo, Mi Gyeong,Yoo, Hee Min,Hong, Se-Hoon,Park, Jung-Mi,Ka, Seung Hyeun,Oh, Kyu Hee,Seol, Jae Hong,Jung, Yong Keun,Chung, Chin Ha American Society for Clinical Investigation 2012 The Journal of clinical investigation Vol.122 No.7
<P>Identification of the cellular mechanisms that mediate cancer cell chemosensitivity is important for developing new cancer treatment strategies. Several chemotherapeutic drugs increase levels of the posttranslational modifier ISG15, which suggests that ISGylation could suppress oncogenesis. However, how ISGylation of specific target proteins controls tumorigenesis is unknown. Here, we identified proteins that are ISGylated in response to chemotherapy. Treatment of a human mammary epithelial cell line with doxorubicin resulted in ISGylation of the p53 family protein p63. An alternative splice variant of p63, δNp63α, suppressed the transactivity of other p53 family members, and its expression was abnormally elevated in various human epithelial tumors, suggestive of an oncogenic role for this variant. We showed that ISGylation played an essential role in the downregulation of δNp63α. Anticancer drugs, including doxorubicin, induced δNp63α ISGylation and caspase-2 activation, leading to cleavage of ISGylated δNp63α in the nucleus and subsequent release of its inhibitory domain to the cytoplasm. ISGylation ablated the ability of δNp63α to promote anchorage-independent cell growth and tumor formation in vivo as well to suppress the transactivities of proapoptotic p53 family members. These findings establish ISG15 as a tumor suppressor via its conjugation to δNp63α and provide a molecular rationale for therapeutic use of doxorubicin against δNp63α-mediated cancers.</P>
정신과 입원 환자의 자살 위험성 사정도구의 신뢰도, 타당도 검증
신희연 ( Hee Yeon Shin ),신이수 ( Yi Soo Shin ),주정혜 ( Jung Hye Ju ),장향순 ( Hyang Sun Jang ),홍진영 ( Jin Young Hong ),전홍진 ( Hong Jin Jeon ),유범희 ( Bum Hee Yu ) 한국간호과학회 정신간호학회(구 대한간호학회정신간호학회) 2012 정신간호학회지 Vol.21 No.1
Purpose: Assessment of suicide risk is a critical task for nurses, especially for nurses working with psychiatric inpatients. The purpose of this study was to verify the reliability and validity of the Nurses` Global Assessment of Suicide Risk (NGASR) for psychiatric inpatients. Methods: This study was methodological study. A scale composed of 15 items was used with 106 psychiatric inpatients in open and closed psychiatric units of a tertiary hospital. Cohen`s kappa coefficient, Intraclass correlation, factor analysis and Jonckheere-Terpstra Test for Ordered Alternatives were used for statistic analysis. Results: Main results were as follows; Reliability of the scale was supported with a total intraclass correlation coefficient of .890 (range from .722 to 1.000). In investigating construct validity, 15 items loaded on six factors which explained 63.4% of total variance. Also the Jonckheere- Terpstra test revealed a significant trend in the order of median scores of NGASR across the three groups of Evaluation of Suicide Risk (ESR). These results supported the criterion-related validity of the scale. Conclusion: The findings in this study indicate that this scale is reliable and valid in assessing suicide risk of psychiatric inpatients. Therefore it is an appropriate scale to assess suicide risk for psychiatric inpatients.