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김익환,김창용,김경희,허준영,옥수민,정성희,안용우,고명연,Kim, Ik-Hwan,Kim, Chang-Yong,Kim, Kyung-Hee,Huh, Joon-Young,Ok, Soo-Min,Jeong, Sung-Hee,Ahn, Yong-Woo,Ko, Myung-Yun 대한안면통증구강내과학회 2011 Journal of Oral Medicine and Pain Vol.36 No.4
Personal characteristics of female lichen planus patients were analyzed psychologically using the SCL-90-R. The subjects were 51 female lichen planus patients who visited Orofacial pain clinic of the Department of Oral Medicine, Pusan National University Yangsan Dental Hospital from 2009 to 2010. The female control group were collected from Pusan Kyungnam area. 45 female burning mouth syndrome patients, 36 female temporomandibular joint disorder patients, 23 female trigeminal neuralgia patients were subjected at Orofacial pain clinic of the Department of Oral Medicine, Pusan National University Hospital from 1998 to 2010. 1. Lichen planus patients group, burning mouth syndrome patient group, temporomandibular joint disorder patients group, trigeminal neuralgia patients group and the control group were within normal range. 2. The T-Scores of O-C, IS, DEP, ANX, HOS, PHOB in lichen planus patients group were significantly higher than in the control group. 3. The T-Scores of O-C, IS, DEP, ANX, PAR, PSY in chronic group was significantly higher than in acute group. 4. The T-Scores of SOM, O-C, DEP, ANX, in burning mouth syndrome patients group was significantly higher than in lichen planus patient group. 5. There was no significant T-score difference between lichen planus group and temporomandibular joint disorder patient group. 6. There was no significant T-score difference between lichen planus group and trigeminal neuralgia patient group.
안드로이드 플랫폼에서 유연한 응용프로그램 권한관리 기법 설계 및 구현
김익환,김태현,Kim, Ik-Hwan,Kim, Tae-Hyoun 한국정보처리학회 2011 정보처리학회논문지 C : 정보통신,정보보안 Vol.18 No.3
대표적인 스마트폰 플랫폼의 하나인 구글 안드로이드는 응용프로그램 권한기반 보안모델을 채택하고 있다. 이는 응용프로그램의 시스템 자원에 대한 부적절한 접근을 제한하여 보안위협을 줄이기 위한 방법이지만 권한의 선택적 허용이 불가능한 점, 한번 권한이 부여된 경우 이를 되돌릴 수 없는 점, 사용자 ID 공유에 따른 권한의 공유를 사용자가 알 수 없는 점 등 문제점이 존재한다. 본 연구에서는 기존 안드로이드 보안 모델의 한계점을 개선하기 위해 사용자가 응용프로그램이 요구하는 권한을 유연하게 설정할 수 있는 기법을 설계, 구현하였다. 본 연구에서 제안한 기법의 설계목표는 기존 보안모델의 수정을 최소화하면서 보안성과 사용자 편의성을 향상하는 것이며, 구현된 기법의 동작 검증은 안드로이드 에뮬레이터 상에서 실제 응용프로그램 수행을 통해 이루어졌다. Google Android, which is one of the popular smart phone platforms, employs a security model based on application permissions. This model intends to reduce security threats by protecting inappropriate accesses to system resources from applications, but this model has a few problems. First, permission requested by an application cannot be granted selectively. Second, once the permission has been granted it is maintained until the application is uninstalled. Third, applications may acquire powerful permissions through user ID sharing without any notice to users. In order to overcome these limitations, we designed and implemented a flexible application permission management scheme. The goal of our scheme is to enhance security and user convenience while keeping compatibility to original platform. We also verified the operation of our scheme with real applications on Android emulator.
김익환(Ik-hwan Kim),송제선(Je Seon Song) Asia association of Disability and Oral health 2018 International Journal of Disability and Oral Healt Vol.14 No.2
The purpose of this study was to examine the state of the articles in the Journal of Korean Association for Disability and Oral Health. All the papers in the Journal of Korean Association for Disability and Oral Health of 2005 to 2018 were analyzed. A total of 181 papers were classified according to its type, field of the study, school, the number of authors, references, and written language. According to the type of the paper, 38 (21.0%) were original articles, 12 (6.6%) were review articles, 124 (68.5%) were case reports and 7 (3.9%) were others. In relation to the field, the most were pediatric dentistry. According to author’s school, some schools showed preponderances. As to the number of researchers, the most common number of researchers was four (39 articles, 21.5%), and the number of the articles written by six (37, 20.4%) was similar to that of the articles written by three and five (28, 15.5%). As for the number of references, this number ranged from minimum 0 to maximum 40, and the average was 14.8. Regarding the language of the articles, English was used in 5 articles (2.8%), and Korean was used in 176 articles (97.2%). Thirty-nine (21.5%) papers were done in collaboration with workers of the other field. The efforts of this study was to provide useful information of the journal and the development of research in Special care dentistry.
김익환(Ik-hwan Kim),박민지(Minji Park),이고은(Ko-Eun Lee),이재호(Jae-Ho Lee) Asia association of Disability and Oral health 2018 International Journal of Disability and Oral Healt Vol.14 No.2
중등도의 혈우병 A 환아와 중증의 혈우병 B 환아가 응고인자 투여 후 전신마취 하에 각각 매복 과잉치 발거술 및 다수 유치의 우식치료를 받았다. 이와 같이 혈우병 환자의 치과치료시에는 부족한 응고인자를 보충해주는 등의 응고인자 수준의 관리와 복잡한 의과적 처치 및 술 후 관리가 요구된다. 또한 치과치료 시 출혈을 유발되지 않도록 주의해야 하며 응급 상황등에 대비하여 국소적 지혈 방법 등을 숙지하고 있는 것이 필요하다. Hemophilia is an X-linked herediatry disorder. Hemophilia A is a defiency of factor VIII and hemophilia B (Christmas disease) is a deficiency of factor IX. The most widely used classification is based on plasma procoagulant levels, with people 〈1% factor defined as severe; 1 - 5% moderately severe; and 〉5% as mild. A 7 years old boy visited our clinic with chief complaint of impacted supernumerary tooth. This boy had severe hemophilia A. With the previous ADVATE<SUP>®</SUP> injection and factor VIII replacement, Extraction of supernumerary tooth was successfully done under General anesthesia. A 9 years old boy referred from local clinic for dental caries treatment. This boy had severe hemophilia B. With the preparation of BeneFIX<SUP>®</SUP> injection, dental treatment was done successfully under general anesthesia. It is often first detected by dental trauma. Since bleeding after dental treatment may cause severe or even fatal complications, people with hemophilia must be given special dental care. The treatment of the patients with either hemophilia A or hemophilia B involves the intravenous infusion to either control or prevent bleeding.