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안성수,임광철 東新大學校 2003 論文集 Vol.13 No.-
Random Number Generators (RNG) are an important building block for algorithms and protocols in cryptography. They are paramount in the construction of ancryption keys and other cryptographic algorithm parameters. In practice, statistical testing is employed to gather evidence that a generator indeed produces numbers that appear to be random. Few resources are readily available to researchers in academia and industry who wish to analyze their newly developed RNG. The algorithms employ a one-way function G(t,c), where t is 128 bits, c is b bits (128, 512) and G(t,c) is 128 bits. One way to construct G is Rijndael. The 128-bit messagedigest output of the Rijndael algorithm, when message M is input, which is denoted by Rijndael(M).
Rim, Kwang-Cheol The Basic Science Institute Chosun University 2020 조선자연과학논문집 Vol.13 No.2
Different units of metrology were used in the Joseon Dynasty, such as Yeongjocheok, Pobaekcheok, Jolegicheok, and Jucheok. In many cases, Yeongjocheok and Pobaekcheok were of different dimensions depending on the region. Therefore, this study analyzed Jaseungcha Dohae of Ha BaeckWon to restore the scale of Hwasun Dongbok area in which Seokdang Na GyeongJeokyung and Gyunam Ha BaeckWon lived and made practical devices. The results of the analysis show that a universal Yeongjocheok of 30.6 cm was used.
임광철(Kwang-Cheol Rim),최진석(Jin-suk Choi) 한국지능시스템학회 2010 한국지능시스템학회논문지 Vol.20 No.6
본 논문에서는 양자암호 시스템의 설계과정에서 필연적으로 사용되는 의사난수들의 비트열들이 다수개 존재하는 현상과 이를 상호 공개된 채널에서 부분정보를 공유해야 하는 상황은 비트열들의 쌍을 노출 시킨다. 본고에서는 이러한 의사난수열의 기본 테스트 과정과 이를 벗어나는 이진 병합 비트열의 난수성에 대하여 살펴 본다. In this paper, quantum cryptography systems used in the design process inevitably open bit stream of pseudo-random number that exists multiple open channels between them and the need to share information on the part of the situation exposes a pair of bit stream. In this paper, the base test of pseudo-random number I tested out this process and the merge bit binary column look out for randomness.
최광림,이삼용,윤강모,김광석,조백현,이민철 大韓成形外科學會 1997 Archives of Plastic Surgery Vol.24 No.1
Clinical manifestations caused by vascular complications including stenosis, occlusion, aneurysm and arteriovenous malformation were rarely developed in patients with neurofibromatosis. We reviewed 23 cases of neurofibromatosis type I to identify the histopathologic features of yessels in neurofibromatosis associated with clinical features. The results were as follows: 1.The age of patients ranged from 4 to 61 years(mean; 23years)at diagnosis and sex ratio of male to female was 1.3:1. The family history was present in 52%(12/23) of the patients. Angiographically, 3 cases of atherosclerosis, 1 case of arteriovenous malformation, and 1 case of aneurysm were seen. 2. Peculiar vascular alternations were found in 7 of 23 cases of neurofibmatosis, which were classified as 4 types: 6 cases of pure intimal; 1 case of intimal-aneurysmal; 3 cases of nodular type. The most frequent type of vascular lesions was observed in the patients with neurofibromatosis was pure intimal, and the most uncommon one was intimal-aneurysmal. 3. Immunohistochemically, the positivity to S-100 protein was noted in the tumor cells arranged in the periphery of vessels, but no reaction was seen the spindle or epithelioid cells within the vascular wall. In conclusion, the vascular lesions associated with neurofibromatosis may result from abnormal proliferation of cells in the vascular wall, possibly smooth muscle cells, not Schwann cells in origin. The various types of lesions described previously appear to be of stage of development.
Surgical Treatment of the Atlantoaxial Osteoarthritis
Jin, Kwang-Ouk,Kim, Young-Woo,Rim, Dae-Cheol,Ahn, Sung-Ki The Korean Neurosurgical Society 2007 Journal of Korean neurosurgical society Vol.41 No.4
Atlantoaxial facet joint osteoarthritis is rare, often undiagnosed because it may be misdiagnosed as occipital neuralgia, or degenerative cervical spondylosis. Unilateral occipitocervical pain aggravated by head rotation is a specific symptom. Conservative treatment is usually effective. But when the patient complains of intractable neck pain localized to occipitocervical junction and unresponsive to medical therapy, surgical treatment should be considered. Though a few reports of surgically treated atlantoaxial osteoarthritis has been published, surgical outcome is favorable. A case of a surgically treated atlantoaxial osteoarthritis is presented with a review of the literatures.
성인 재발성 폐렴에 대한 임상적 고찰 -한림대학교 의료원 내원 환자를 대상으로-
엄광석 ( Kwang Seok Eom ),전강 ( Gang Jeon ),신태림 ( Tae Rim Shin ),장승훈 ( Seung Hun Jang ),반준우 ( Joon Woo Bahn ),이재영 ( Jae Young Lee ),박용범 ( Yong Bum Park ),김철홍 ( Cheol Hong Kim ),전만조 ( Man Jo Jeon ),박상면 ( S 대한결핵 및 호흡기학회 2004 Tuberculosis and Respiratory Diseases Vol.57 No.1