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조익(Ik Cho),이수현(Su-Hyun Lee) 한국정보과학회 2002 한국정보과학회 학술발표논문집 Vol.29 No.1B
자바는 플랫폼 독립적이라는 장점을 가지고 있지만, 쉽게 역-컴파일 하여 소스코드를 얻을 수 있기 때문에 악의 있는 사용자가 개발자의 모듈과 알고리즘, 데이터 구조를 쉽게 얻을 수 있고 불법 사용이 가능하다. 본 논문에서는 자바 클래스를 보호하기 위하여 소프트웨어에 저작권을 삽입하는 워터마킹 기술과 소스코드 변경을 방지하는 변경확인 기술 및 역-컴파일을 어렵게 하는 난독 기술을 적용한 클래스 단위의 자바 클래스 보호 시스템을 제안 한다. 제안 시스템은 워터마크에 대한 왜곡 공격에 강하고, 워터마크에 변경확인 기술을 적용하여 워터마크의 변경을 방지하였다.
조익(Ik Jo),김영환(Young Whan Kim),조백기(Baik Kee Cho) 대한피부과학회 1984 대한피부과학회지 Vol.22 No.1
We experienced a case of sparganosis developed in the dorsum of penile shaft where, we think, is the very rare site of sparganosis reported in Korea. The patient, a 23 year-old Korean soldier, had slight tender thread-like linear subcutaneous mass on the dorsal aspect of penile shaft for 1 month prior to coming to us. The skin lesion was not palpated when the penis was erect. He had experience of intaking raw-snakes intermittently(5 times) since 2 years ago.
조익(Ik Jo),홍남수(Nam Soo Hong),서은주(Eun Joo Seo),조백기(Baik Kee Cho) 대한피부과학회 1983 대한피부과학회지 Vol.21 No.4
Hair follicle nevus is one of several nevi, in which hair and hair follicle are involved. Crowding of numerous tiny but mature hair follicles with thick fibrous root sheath are the characteristie histologic finding of the nevus. The patient was one month old male infant with pedunculated. mass l cm in size on the left preauricular area. Histologically the skin of the lesion is covered by acanthotic epidermis. In the corium are numerous small mature hair follicles with thick fibrous sheath and a few small Iobules of sebaceous gland embedded in a fibrovascular stroma. There are, however, no central plate of cartilage and adipose tissue.
조익(Ik Jo),조백기(Baik Kee Cho),이원구(Won Koo Lee) 대한피부과학회 1983 大韓皮膚科學會誌 Vol.21 No.1
It has been well known that prutic skin diseases are very common among the chicken raisers. Authors visited three paultry farming area in Kyung Ki Province to observe the avian mite dermatitis among the workers and to collect the causative paultry mites during the period from March to September, 1982. At every paultry farming area, we chose two families to investigate every family member and to check the dermatitis correlated with the mite that we had collected from the samples of each house dust and hen-house dust. The result were summarized as follows; 1. Ornithonyssus sylviarum (Canestrini and Fanzago, 1877) was found in dust samples from two houses and two hen-houses. And Dermatophagoides species and Acarus siro (Linnaeus, 1758) were also collected from the other house and henhouse samples. 2. Three cases of avian mite dermatitis were found in one family, where O. syiviarum was collected in the dust samples from their house and hen-house.
Mossbauer 분광법에 의한 2605S3 Metglas의 배위수 및 국소자기장 분포
조익한,이상훈,강신규,양재석 嶺南大學校 基礎科學硏究所 1992 基礎科學硏究 Vol.12 No.-
We analysed the Mossbauer spectra of ferromagnetic 2605S3 Metglas submitted to various tilt angles;it is concluded that the hyperfine parameters and their correlations depend on the state of the tilt angle. The fact that the mean coordination number is 10.03, the structure of this material is well defined by Bernal's DRPHS model. Also, methods based on linear combination of spectra can be used.
양재석,강신규,이상훈,조익한 嶺南大學校 基礎科學硏究所 191 基礎科學硏究 Vol.11 No.-
The amorphous ?? alloy are studied by Mossbauer spectroscopy at room temperature. This sample are produced by single roll quenching method. The analysis of the distribution of hyperfine fields indicates two peaks. The bimodal P(H) features are as following:?? kOe and ?? =273 kOe. This represents that this sample has the inhomogeneous magnetic structure. The average isomer shift is 0.097 mm/s, the quadrupole splitting is 0.022mm/s. The absorption intensity, b, of M??ssbauer spectrum is about 2.91 and the number of Fourier parameters is eight.