특집06 : 사물인터넷(IoT) 보안 ; 차세대 IoT 네트워크 보안 현황

권혁찬,정병호,김정녀 한국정보처리학회 2015 정보처리학회지 Vol.22 No.2

심자도를 이용한 심근 전류분포 복원과 임상적 응용

권혁찬,정용석,이용호,김진목,김기웅,김기영,박기락,배장호 대한의용생체공학회 2003 의공학회지 Vol.24 No.5

The source current distribution in a heart was reconstructed from the magnetocardiogram (MCG) and its clinical usefulness was demonstrated. MCG was measured using 40-channel superconducting quantum interference device (SQUID) gradiometers for a patient of Wolff-Parkinson-White (WPW) syndrome, which has an accessory pathway between the atria and the ventricles. Reconstruction of source current distribution in a plane below the chest surface was performed using minimum norm estimation (MNE) algorithm and truncated singular value decomposition (SVD), In the simulation, we confirmed that the current distributions. which were computed for the test dipoles, represented well the essential feature of the test current configurations, In the current map of WPW syndrome, we observed abnormal currents that would bypass the atrioventricular junction at a delta wave. However, we could not observe such currents any more after the surgery. These results showed that the obtained current distribution using MCG signals is consistent with the electrical activity in a heart and has clinical usefulness.

뇌자도에서 전체 평균과 이를 이용한 해부학적 위치 추정

권혁찬,김기웅,김진목,이용호,박용기,Kwon H.,Kim K.,Kim J. M.,Lee Y. H.,Park Y. K. 대한의용생체공학회 2004 의공학회지 Vol.25 No.6

In this work, a method is presented to find an anatomical site of a current source crudely in a standard brain using grand average of MEG data. Minimum norm estimation algorithm and truncated singular value decomposition were applied to calculate the distributed sources that can reproduce the measured signals. Grand average over all subjects was obtained from the transformed signals, which would be detected in a standard sensor plane by the obtained distributed current sources. In the simulation study, it was shown that the localized dipole using the grand average is consistent with the mean location of localized dipoles of all subjects within several mm even with large inter-individual differences of sensor positions. This result suggests that the mean location of low level signal source can be estimated as a dipole source in grand average and it was confirmed in the localization of the current source of N100m. when the localized dipole is registered on a standard brain. This result also suggests that the activity region obtained from grand average can be crudely estimated on a standard brain using the source location of the N100m as a reference point.

〈홍길동전〉에 나타난 《서유기》 서사 양식 고찰

權赫贊 한국중국소설학회 2012 中國小說論叢 Vol.36 No.-

The similarities between “The Tale of Hong Kil-tong” and Water Margin in terms of their narrative structures have been a popular topic among scholars of Korea literature. However, the similarities between “The Tale of Hong Kil-tong” and Journey to the West in terms of their narrative structures have been largely neglected. This essay focuses on these similarities as an attempt to clarify the seemingly redundant latter half of “The Tale of Hong Kil-tong”, where Kil-tong continues to pursue a series of adventures that do not add up in terms of the story plot even after fulfilling his lifelong dream of being appointed as Minister of War. In this respect, the unfolding of the narrative in “The Tale of Hong Kil-tong” that resembles Journey to the West can be an example disclosing Hŏ Kyun’s attempt to emulate clichés in terms of the story plots in premodern Chinese fictional narratives.

급성골수성백혈병에서 염색체변이 및 면역표현형의 임상적 의의

권혁찬 대한혈액학회 2002 Blood Research Vol.37 No.2

체육교사의 스포츠 동호회 경험을 통한 삶의 변화 탐색

권혁찬,박대원 한국스포츠교육학회 2023 한국스포츠교육학회지 Vol.30 No.1

This study focused on the matter of work-life blending that occurs in sports activities of physical education teachers. The purpose of the study is to do inquiry about the changes and meanings of physical education teachers in and out of school by researching into the experience of sports club activities of physical education teachers, and to provide implications for future sports activities research and supporting sports participation. To this end, three physical education teachers who continued to participate in sports club activities were selected as study participants. It was narratively made inquiry through the process of talking about and retelling the sports club experiences of physical education teachers collected through in-depth interviews. The sports club activities of the study participants went through the introduction and growth process, leading to educational activities in the same sports. The three changes in life as a physical education teacher were found to be 'improving subject expertise through learning, teaching, and growing', 'Forming diverse relationships through a shared culture and bonding', and 'expanding one's existence through enjoying sports'. The researcher finally derived the meaning of the experience of 'one sport' by viewing the changes of the study participants from an integrated perspective of work and leisure. 이 연구는 체육교사의 스포츠 활동에서 발생하는 워크-라이프 블렌딩(work-life blending) 문제에 주목하였다. 연구의 목적은 연구에 참여한 체육교사들의 스포츠 동호회 활동 경험을 탐구함으로써 그들이 학교 안팎에서 겪은 변화와 그 의미를 탐색하고, 향후 체육교사의 스포츠 활동 연구와 스포츠 참여 지원 방안에 관한 시사점을 제공하는 데 있다. 이를 위해 스포츠 동호회 활동에 지속해서 참여한 3명의 체육교사를 연구 참여자로선정하였다. 심층 면담을 통하여 수집한 체육교사의 스포츠 동호회 경험을 이야기하기, 다시 이야기하기의 과정을 거쳐 내러티브로 탐구하였다. 연구 결과, 연구 참여자들의 스포츠 동호회 활동은 입문과 성장 과정을 거치며 같은 종목의 교육 활동으로 이어졌다. 체육교사로서 3가지 삶의 변화는 ‘교학상장을 통한 교과 전문성향상’, ‘공유 문화와 유대감을 통한 다양한 관계 형성’, ‘스포츠 즐기기를 통한 자기 존재의 확장’으로 나타났다. 연구자는 연구 참여자들의 변화를 일과 여가의 통합적 관점으로 바라봄으로써 최종적으로 ‘하나의 스포츠(One sport)’라는 경험의 의미를 도출하였다.

How Guan Yu Became a National Hero of Korea

권혁찬 한국중국소설학회 2009 中國小說論叢 Vol.29 No.-

崇拜关羽的传统,大多起于 ≪三国志演义≫里面关羽的英雄形象。≪三国志演义≫里诸多有关关羽的故事, 对关羽形象进行了特别的美化, 使关羽成为代表忠义的人格典范。明朝时,关羽信仰也传播到了海外,朝鲜的关羽信仰始于1592年壬辰倭亂发生之后, 陳璘 (1543-1607)等明将被派赴朝鲜之际, 1598年战争结束之前,全国各地已经设立了几个关帝庙。关羽信仰虽为外来宗教, 为统一思想, 巩固和加强统治, 朝鲜的历代帝王如宣祖, 英祖, 肅宗, 经常亲临关帝庙祭祀, 以示明朝对朝鲜有再造之恩。因此,关羽的忠义形象也符合朝鲜官方意识形态。 讨论关羽信仰在朝鲜的传播,不可忽略壬辰战争时在民间广为流传的关羽故事,战争期间已大量出现的关羽打败日将的民间传说,对关羽信仰的传播和普及起到了一定的作用.。比如, ≪壬辰錄≫(The Record of the Black Dragon Year)里記載的以关羽为中心人物的故事, 常常将关羽描述成救国的英雄人物。 这些故事里的关羽, 本为中国三国时代之武将, 却被当时的朝鲜百姓视为打败夷狄、拯救祖国的民族英雄。 关羽作为朝鮮的守護神形象(guardian and benefactor of Korea)近三百年来不断被强化, 甚至1910-1945年日本占领韩国时, 日本人亦将关羽视为他们统治韩国的障碍。根据民间传说,当日本人要破坏在全州, 星州, 安東等地方的关帝庙时, 他们遭到关羽的惩罚,或死亡或逃跑.。关羽信仰在韩国如此根深蒂固, 而关羽在朝鲜民间传说或文学作品里的地位也明显比 ≪三国≫其他的英雄人物更高。 在当代韩国, ≪三国志演义≫的读者,虽然对 ≪三国≫里的人物有着不同的评价, 但许多读者都欣赏和支持关羽所代表的价值,因为他 “侯之死,有君臣之义,有兄弟之恩,有朋友之情,有久要不忘之节”。关羽和他所代表的价值观念在21世纪韩国依然很受欢迎。

Vertically aligned 1-D CH₃NH₃PbI<SUB>3-X</SUB>Cl<SUB>X</SUB> based semitransparent solar module using AAO scaffold

권혁찬,마선일,윤성철,장규민,양현하,윤주원,심상기,문주호 한국진공학회 2019 한국진공학회 학술발표회초록집 Vol.2019 No.2

Oxaliplatin with Biweekly, Low Dose Leucovorin and Bolus and Continuous Infusion 5-fluorouracil (Modified FOLFOX 4) as First-line Therapy for Patients with Metastatic Colorectal Cancer

권혁찬,Kyoung Tae Kim,Shin Ae Lee,Jong-Sung Park,Sung-Hyun Kim,Jae-Seok Kim,Hyo Jin Kim 대한암학회 2004 Cancer Research and Treatment Vol.36 No.2

Purpose: To determine the activity and toxicities of low dose leucovorin (LV) plus fluorouracil (5-FU) regimen, combined with oxaliplatin every two weeks (modified FOLFOX 4), as a first-line therapy for patients with metastatic colorectal cancer. Materials and Methods: Between March 2001 and August 2003, fifty-five patients were enrolled in this study. Patients were treated with oxaliplatin 85 mg/m2 as a 2-hour infusion at days 1 plus LV 20 mg/m2 over 10 minutes, followed by 5-FU bolusa 400 mg/m2 bolus and 22 hour continuous infusion of 600 mg/m2 5-FU at day 1~2. This treatment was repeated in 2 week intervals. Results: The objective response rate was 40% on an intent-to-treatment analysis. Three patients (6%) demonstrated a complete response and nineteen patients (38%) showeda partial response. Sixteen patients (32%) showed a stable disease and eleven patients (22%) progressed during the course of the treatment. The median time to progression and overall survival time wereas 6.6 months (95% CI: 4.98~8.02 months) and the median overall survival time was 17.0 months (95% CI: 9.15~24.85 months) from the start of the chemotherapy, respectively. A total of 275 cycles were analyzed for toxicity. Major hematologic toxicities included grade 1~2 anemia (23.5%), neutropenia (25.3%) and thrombocytopenia (10.6%). There were only 2 cycles of neutropenic fever. The most common non- hematologic toxicities were grade 1~2 nausea/vomiting (10.9%), diarrhea (9.1%) and grade 1 neuropathy (18.0%). There was no treatment related death. Conclusion: The modified folfox 4 regimen is safe and effective regimen as a first-line therapy in advanced colorectal cancer patients.(Cancer Res Treat. 2004;36:115-120)

연결성 관점에서의 스마트카 동향 및 보안 이슈

권혁찬 한국통신학회 2017 정보와 통신 Vol.34 No.10

지능형 교통시스템(C-ITS), 자율주행, 스마트시티 시대로 진화하면서 자동차는 점점 지능화되고, 연결성도 대폭 확대되는 추세이다. 최근에는 협력형 자율주행 서비스를 위해 차량 간 통신(V2X) 을 위한 기술/서비스 개발, 실증 및 도로 인프라 구축 등 준비가 매우 활발히 진행 중이다. 또한 해외의 자동차OEM 및 전문업체들을 중심으로 클라우드 기반의 다양한 스마트카 서비스도 속속 등장하고 있다. 그러나 이러한 연결성의 증가는 자동차의 공격 벡터가 확대되어 보안 위협도 함께 증가하는 문제가 있다. 본 고에서는 연결성 관점에서의 스마트카 표준 및 기술 동향을 살펴보고 최근의 보안 기술 현황 및 이슈를 소개한다.