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이창선 ( Chang Seon Lee ),김기홍 ( Ki Hong Kim ) 대구가톨릭대학교 자연과학연구소 2012 자연과학연구논문집 Vol.10 No.1
This study was performed to investigate vision training was an effective way to influence fusional vergence and asthenopic symptoms in case of convergence excess and divergence excess. The change was examined weekly at the clinic during the 7 week vision training. According to the results, MISTERY CIRCLE vision training methods improved the binocular vision function and sensation symptoms. For Worth 4 Dot test, Howell test card and fusion reserve test showed fusion rate changes. The study proved that visio training methods for patients with binocular vision was effective for the improvement of the phoria, function and sensation symptoms of these patients.
수직편위를 동반한 간헐성외사시 소아에 대한 시기능 훈련 후 임상 사례
이창선,김재도,손정식,김대년,장우영,김기홍,Lee, Chang-Seon,Kim, Jae-Do,Son, Jeong-Sik,Kim, Dae-Nyoun,Jang, Woo-Yeong,Kim, Ki-Hong 한국임상보건과학회 2013 한국임상보건과학회지 Vol.1 No.1
Purpose: The purpose is to study the effects of the vision training, as a non-surgically treated vision therapy, on the objective and the subjective symptoms of the patients with intermittent exotropia combined with vertical deviation. Method: For the boys at the age of eight with intermittent exotropia, who report a long-distance blurred vision, dazzling, and intermittent diplopia more than ten times a day, the vision training had been practiced for seven weeks. The objective and subjective symptoms have been examined after six months from the end of the training. Results: The objective and the subjective symptoms have been improved after the seven weeks training and the improvements lasted after six months from the end of the treatment. Conclusion: Non-surgical treatment for the patients with intermittent exotropia, including intermittent exotropia combined with vertical deviation like this case, should be considered as an auxiliary treatment and on the preferential basis.
온라인 게임 해킹대응에서 Signature 기반 탐지방법 개선에 관한 연구
이창선(Chang Seon Lee),유진호(Jinho Yoo) 한국전자거래학회 2016 한국전자거래학회지 Vol.21 No.1
게임회사는 온라인 게임을 서비스하는 과정에서 공격자의 공격을 자주 받는다. 본 논문에서는 온라인 게임에서 해킹 모듈을 탐지하는 방식 중 하나인 Signature 탐지 방식의 한계점을 분석하고, 이러한 문제점을 보완하기 위한 Scoring Signature 탐지 방식을 제안하고자 한다. Scoring Signature 탐지 방식은 알려지지 않은 해킹 공격에 대한 수집 및 탐지를 가능토록 하여 기존의 Signature 탐지 방식보다 20배 이상의 탐지 성과로 나타났다. 이 방식을 기존에 탐지하고 있는 방식과 병행하여 적용하면 해킹 모듈 수집에 대한 번거로움을 최소화하고 미탐지로 인한 게임내의 해킹 모듈 사용도 크게 감소시킬 수 있을 것으로 판단된다. Game companies are frequently attacked by attackers while the companies are servicing their own games. This paper analyzes the limit of the Signature detection method, which is a way of detecting hacking modules in online games, and then this paper proposes the Scoring Signature detection scheme to make up for these problems derived from the limits. The Scoring Signature detection scheme enabled us to detect unknown hacking attacks, and this new scheme turned out to have more than twenty times of success than the existing signature detection methods. If we apply this Scoring Signature detection scheme and the existing detection methods at the same time, it seems to minimize the inconvenient situations to collect hacking modules. And also it is expected to greatly reduce the amount of using hacking modules in games which had not been detected yet.
이창선 ( Chang-seon Lee ),유진호 ( Jinho Yoo ) 한국정보처리학회 2015 한국정보처리학회 학술대회논문집 Vol.22 No.1
온라인 게임에서 핵 프로그램을 탐지하는 방식 중 하나인 시그니처 탐지 방식의 문제점을 제시와 제시된 문제점을 보완하기 위한 발전된 시그니처 탐지 방식을 적용하므로 인하여 기존의 가지고 있던 문제를 개선할 수 있는 방법이다. 이 방식을 기존에 탐지하고 있는 방식과 병행할 경우 핵 프로그램을 수집해야 하는 번거로움과 미 탐지로 인한 게임내의 핵 프로그램을 탐지하는데 일조할 것으로 보인다.
간헐성 외사시 및 외사시재발환자에 대한 시기능 훈련 후 입체시 변화
이창선 ( Chang Seon Lee ),김기홍 ( Ki Hong Kim ) 대구가톨릭대학교 자연과학연구소 2011 자연과학연구논문집 Vol.9 No.1
This was a study of the effects of the vision training on stereopsis for intermittent exotropia and recurrent intermittent exotropia patients. The change was examined weekly at the clinic during the 8 week vision training. Stereopsis was measured using Titmus test, after vision training on intermittent exotropia and recurrent intermittent exotropia, in 17 patients. Stereopsis was significantly improved from a before VT below 400 seconds of arc to a after VT below 160 seconds of arc. This study shows that the vision training is effective for changes in stereopsis of the intermittent extropia and recurrent intermittent exotropia patients.
강지향,이공섭,이창선,최현주,홍종서,고영민,이재용,이은천,Kang, Ji-Hyang,Lee, Goung-Sup,Lee, Chang-Seon,Choi, Hyun-Ju,Hong, Jong-Seo,Koh, Young-Min,Lee, Jai-Yung,Lee, Eon-Chun 대한결핵및호흡기학회 2000 Tuberculosis and Respiratory Diseases Vol.48 No.4
The bronchopulmonary sequestration is a region of the lung parenchyma that has an incomplete or no connection with the airways and is supplied by an aberrant artery arising from the aorta or one of its branches. The anatomy of the supplying artery is very important during operation. A case of pulmonary sequestration supplied with the left gastric artery is presented. The patient was 61 years old male and had hemoptysis. The chest CT showed cystic bronchiectasis in the left lower lung with few air-fluid level. Also, in aortogram, arterial supply was The aortogram also showed arterial supply coming from the left gastric artery of abdominal aorta branches. Left lower lobectomy and abnormal arterial ligation were performed. 폐격리증은 비정상적으로 발생한 폐조직과 이상동맥에 의해 형성된 선천성 질환으로 비교적 드문질환이다. 폐격리증에서 이상동맥의 해부학적 위치는 수술합병증의 발생에 매우 중요하다. 저자들은 객혈을 주소로 내원한 61세 남자환자에서 대동맥촬영상 좌위동맥에서 기시하는 비비꼬인 형태의 이상동맥에 의해 공급받는 폐격리증 1예를 경험하였기에 보고하는 바이다.