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김창한(Chang Han Kim),장남수(Nam Su Chang) 한국정보보호학회 2017 정보보호학회논문지 Vol.27 No.2
본 논문에서는 정수 모듈러 N(홀수) 연산을 모듈러(2<SUP>r</SUP>-1)N 연산으로 변환하여 연산중 발생하는 오류를 탐지하는 방법을 제시한다. 제안하는 방법은 모듈러 직렬 곱셈기의 경우 공간 복잡도는 50% 정도, 시간 복잡도는 1% 미만 증가한다, 제안하는 방법은 r=2 인 경우 1 비트 오류는 99%, 2 비트 오류는 50%, r=3 인 경우 1, 2 비트 오류를 99% 탐지가 가능한 효율적인 오류 탐지 방법이다. In this paper, we proposed an architecture of error detection in ZN operations usingZ(2<SUP>r</SUP>-1)N. The error detection can be simply constructed in hardware. The hardware overheads are only 50% and 1% with respectively space and time complexity. The architecture is very efficient because it is detection 99% for 1 bit fault. For 2 bit fault, it is detection 99% and 50% with respective r=2 and r=3.
Dolomite 로 부터 고토인안비료 제조의 기초적 연구
김창은 한국화학공학회 1972 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.10 No.1
This investigation was carried out to produce a high quality magnesium compounded fertilizer by initially dissolving calcined dolomite in sea water to form the intermediate Mg(OH)₂ precipitate, and reacting this intermediate with phosphoric acid and ammonia thereafter. The experimental results were obtained as follows; 1) The optimum calcination temperature of dolomite was about 950℃ for 30 minutes operation and in the displacement of the calcined dolomite in sea water, the optimum mole ratio of calcium hydroxide to magnesium chloride is 1:1.2 for 4 hours of the dissolution time. 2) The high yield of the magnesium compounded fertilizer was obtained, when the precipitate was reacted with 20% phosphoric acid and neutralized with 28% ammonium hydroxide thereby obtaining the alkalinity of the solution to pH 9. 3) By the results of X-ray diffraction and chemical analysis, the major component of the product was magnesium ammonium phosphate at the above condition and the fertilizing effect was also good.
NORMAL FUZZY PROBABILITY FOR GENERALIZED QUADRATIC FUZZY SETS
김창일,윤용식 충청수학회 2012 충청수학회지 Vol.25 No.2
A generalized quadratic fuzzy set is a generalization of a quadratic fuzzy number. Zadeh dees the probability of the fuzzy event using the probability. We dee the normal fuzzy prob-ability on R using the normal distribution. And we calculate the normal fuzzy probability for generalized quadratic fuzzy sets.
The canonical form of involutary fuzzy matrices
김창일,박세원 충청수학회 2014 충청수학회지 Vol.27 No.4
We study special types of matrices. The involutary fuzzy matrices are important in various applications and have many interesting properties. Using the graphical method, we have the zero patterns of involutary fuzzy matrix, that is, involutary Boolean matrices. And we give the construction of all involutary fuzzy matrices for some dimensions and suggest the canonical form of involutary fuzzy matrix.