http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이훈재,Lee, Hoon-Jae 한국정보처리학회 2003 정보처리학회논문지 C : 정보통신,정보보안 Vol.10 No.7
LM 발생기는 합산 수열 발생기가 갖고 있는 최대 주기, 최대 근사 선형복잡도 및 최고 차수 상관면역도를 동시에 만족하는 발생기이며, 입출력 무상관 발생기이다. 본 논문에서는 LM 발생기를 고속화 구현하기 위하여 m-병렬 LM 수열 발생기(m-parallel LM-BSG, Lee-Moon Binary Sequence Generator)를 제안하였으며, m=8인 병렬 발생기(8-parallel LM-BSG)를 세부 설계한다. 기존의 스트림 암호와 비교할 때, 제안된 알고리듬은 같은 안전성을 유지하면서 속도가 m=8배 빨라짐을 알 수 있었다. The LM generator is an improved summation generator with maximum period, near maximum linear complexity and maximum order of correlation immunity, and it has a property with the input-output correlation immunity In this paper, we propose the high-speed m-parallel LM-BSG and 8-parallel LM-BSG for detail as a design example. When compared with a conventional stream cipher, the properties of the proposed cipher exhibited the same crypto-degree (security) with a rt times faster processing.
이정환,이상우,최재현,이성준,이홍식,김창덕,진윤태,류호상,전훈재,송치욱,현진해,허병원 대한소화기내시경학회 2000 Clinical Endoscopy Vol.21 No.1
Background/Aims : Sharp impacted esophageal foreign bodies can be very difficult to manage. When attempting to remove such objects inappropriately, life threatening complications, such as perforation can occur. Terefore, surgical intervention generally affords a safer approach. The aim of this study was to evaluate the safety and efficacy of endoscopic remval of sharp impacted esophageal foreign bodies using a dilatation method with an oral side balloon. Methods : A total of 17 patients (7 Male, 10 Female)with sharp impacted esophageal foreign bodies underwent endoscopic Extraction. The following technique was successfully performed; an oral side balloon (Top Co., Japan) for esophageal variceal sclerotherapy was attached on the distal part of the endoscope. Under local anesthesia, the endoscope was inserted near the proximal part of the esophageal foreign body. Then, the oral side balloon was gradually dilated. Dilataion of the proximal part of the esophagus made it possible to release the sharp impacted foreign body from the esophageal wall. Results : The types of foreign bodies were fish bones (6 cases), press-through packages (6 ases), chichen bones (3 cases), dentures (1 case), and a watch (1case). Endoscopic removal was successful in all 17 cases without complications such as perforation. Conclusions : This method of using an oral side balloon is safe and effective in removing sharp impacted esophageal foreign bodies, preventing, surgery and possible perforation.
의학학술지 게재논문들에서의 통계학적 방법론 활용현황 및 소아알레르기 호흡기학회지의 질 향상을 위한 제언
이훈재 ( Hun Jae Lee ),정수경 ( Su Kyung Jung ) 대한소아알레르기호흡기학회(구 대한소아알레르기 및 호흡기학회) 2011 소아알레르기 및 호흡기학회지 Vol.21 No.3
Statistical analysis is an essential component of all biomedical research. Use of descriptive and inferential analysis enables researchers to summarize findings and conduct generalizations from research findings. Physicians must keep current with clinical information to practice evidence-based medicine. In doing so, physicians need to access reports of original research. This requires the reader to critically appraise the design, conduct, and analysis of each study and subsequently interpret the results. However, many surveys reveal prevalent statistical errors in articles in medical journals, and it is also clear that many physicians are seriously unfamiliar with statistical methods. This constitutes a major barrier to the development of medical research. Given this situation, this review article discusses the use of statistical methods in medical journal articles, the status of statistical errors among them, and the results of evaluation of physician` understanding of statistical methods. Moreover, this article introduces the current trend in statistical reviews to improve the quality of medical journal articles, and explains the uniform requirements for manuscripts submitted to medical journals. Finally, the article proposes several specific ways to improve the quality of the Pediatric Allergy and Respiratory Disease. [Pediatr Allergy Respir Dis(Korea) 2011;21:144-155]
금식 여부 및 측정 시간에 따른 13C-요소호기검사 결과의 평가
이상우,최재현,이성준,이구,이홍식,김창덕,진윤태,엄순호,류호상,송치욱,현진해,전훈재 대한소화기학회 2000 대한소화기학회지 Vol.35 No.5
Background/Aims : This study was designed to evaluate whether the result of 13C-urea breath test (UBT) was influenced by fasting status and to assess the adequate test duration for sample collection. Methods : Twenty-five volunteers were enrolled in this study. Their results were concordant in histology and standard (fasting) UBT for the diagnosis of Helicobacter pylori (H. pylori) infection. Standard UBT was performed after 4-hour-fasting and nonfasting UBT was performed within 1 hour after each meal for the same subjects at one week interval. The breath samples were collected just before and at 5, 10, 15, 20, 25, 30, 35, 40, 50, and 60 minutes after test meal (HelikitTM) and analyzed by isotope ratio mass spectrometer. H. pylori infection was defined as Δ13CO2 at 30 minutes was over 4%. Results : Of 25 volunteers, 13 were infected by H. pylori. Diagnosis of H. pylori the case in which infection was completely concordant in both standard and nonfasting states. In H. pylori infected group, Δ13CO2 was signifantly decreased in nonfasting state than standard state, and the mean Δ13CO2 of both states was the highest at 20 minutes after test meal. Ten minutes were sufficient to obtain ΔCO2 for diagnosis of H. pylori infection. Conclusions: The diagnosis of H. pylori infection is not affected by whether UBT using 75 mg of 13C-urea containing HelikitTM is performed in nonfasting state or its test duration is shortened.
이정환,김영선,이상우,이재원,김광희,김창덕,최재현,엄순호,류호상,전훈재,송치욱,현진해,진윤태,김윤홍,허병원,강창돈 대한간학회 2000 Clinical and Molecular Hepatology(대한간학회지) Vol.6 No.2
Background/Aims: Lamivudine has demonstrated a potent suppression of viral replication and a substantial histologic improvement in many patients with chronic hepatitis B. This study is intended to evaluate the effects of lamivudine and the breakthrough rate in patients with HBV associated chronic liver diseases including decompensated liver cirrhosis, and to investigate the clinical factors closely related with these events. Methods: A total of 58 patients(chronic hepatitis 21, cirrhosis 37) showing abnormal serum levels of aminotransferase and detectable serum HBV DNA for at least 6 month received 150 mg of lamivudine once a day for 3-27 months (median 13). The Kaplan-Meier methods and the Cox regression model were used for statistic analysis. Results: The one-year cumulative incidences of the negative conversion of serum HBV DNA, normalization of aminotransferase, and seroconversion of HBeAg were 98.3%, 86.2% and 20.6%, respectively. Eighteen-month and 2-year cumulative breakthrough rates were 24% and 47%, respectively. The Child-Pugh scores were improved (p$lt;0.001) in patients with decompensated liver cirrhoses(n=21). The negative conversion of HBV DNA, breakthrough rates and seroconversion were not significantly associated with the progression of disease, mutation in pre-core region and previous treatment with interferon. The pre-treatment aspartate aminotransferase (AST) level was associated with a higher rate of seroconversion(p$lt;0.03). Conclusion: Despite a higher breakthrough rate, 2-year lamivudine treatment has induced the seroconversion of HBeAg in 26% of patients, and improved the clinical manifestations in decompensated cirrhotic patients.(Korean J Hepatol 2000;6:172-186)