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Extension of a flow on a completely regular space
박종서 충청수학회 2019 충청수학회지 Vol.32 No.4
'Let $X$ be a completely regular space and let $\beta(X)$ be the Stone-\v{C}ech compactification of $X$. A flow $\phi$ on $X$ can be extended to a flow $\Phi$ on $\beta(X)$.
RSA 시스템의 하드웨어 디자인을 위한 모듈라 곱셈 연산
박재철,박종서 한국항공대학교 1999 論文集 Vol.37 No.-
정보의 암호화와 인증, 디지털서명등에 효율적인 RSA 암호시스템의 주 연산은 모듈라 지수연산이며 이는 모듈라 곱셈의 연속적인 반복수행으로 표현될 수 있다. 본 논문에서는 Montgomery 알고리즘을 이용하여 Walter가 제안한 병렬알고리즘에 대한 2차원 시스톨릭 어레이에 대하여 고찰하고 이를 개선한 선형 시스톨릭 어레이에 대한 구조분석과 하드웨어로 디자인 할 경우 성능에 대하여 분석한다. 그리고 향후 RSA 암호화 시스템으로 구현할 경우 모률라 지수연산으로의 확장 알고리즘과 전반적인 시스템의 구성에 대하여 방법론을 제시한다. RSA crypto system which is used for encryption, authentication and digital signature of information is calculated mainly by modular exponentiation, which can also be calculated by successive operation of modular multiplication. This paper examines in 2-dimensional systolic array of modular multiplication propsed by Walter's Montgomery parallel algorithm and the structure of the linear systolic array which has improved the 2D systolic array, also examines in the hardware design of the linear systolic array and its performance. This paper also proposes a methodology of an extended modular exponentiation algorithm and present overall RSA crypto system hardware structure.
박종서 慶星大學校 1999 論文集 Vol.20 No.1
The term "Value Added" originated in the measurement of the national income in the economics, and has been since used in the measurement of corporate Social Contributions, Production analysis and Collective bargaining. This research therefore discusses the nature of value added, its measurement, and the Accounting of value Added. Value Added of any enterprise can be defined as the difference between the revenues received for the sale of it output and the casts which were incurred in producing that output. A) Value Added is one of the major Contributing factors to the national economic growths. B) Value Added is widely used as a measure of a firms growth and prosperty. The value added accounting is defined as a field of corporate accounting which is studying and accounting Value Added, economic value produced by the firm. Because value added accounting is practised as the enterprise theory of the firm, its team members are composed of employees, stockholders, creditors, and government. The value-added income includes all payments to stockholders in the form of dividends, taxes to governmental units and earings retained in the business. The total value-added concept also includes depreciation.
문제 유형별 학습 모형이 문제해결력 신장에 미치는 효과
박종선,박종서 晋州敎育大學校 科學敎育硏究所 1999 科學敎育硏究 Vol.25 No.-
The purpose of this study is to encourage students to participate actively in lesson by using the developed learning model by problem types to improve students's problem solving skill and to analyze its effects by applying the developed model to lesson. For this purpose, the contents of this study are as follows: (1) to develop the teaching and learning model by problem types. (2) to analyze the effects after the developed teaching and learning model by problem types being applied. Nonequivalent control group pretest -posttest design was adapted as this study design and the study subjects were 144 students of 2 third-grade classes of H elementary school and 2 third grade classes of W elementary school located in Hamyang county. They were divided into two groups, a experimental group and a control group. The test methods were pretest and posttest for mathematics learning achievement, and test for mathematics learning retention. The developed teaching and learning model looked after the instructional plan of the teaching and learning which uses problem solving strategies by problem types in the testbook of the thire-grade fall semester.
Some Common Fixed Points for Type(β) Compatible Maps in an Intuitionistic Fuzzy Metric Space
박종서 한국지능시스템학회 2013 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.13 No.2
Previously, Park et al. [14] defined an intuitionistic fuzzy metric space and studied several fixed-point theories in this space. This paper provides definitions and describe the properties of type(β) compatible mappings,and prove some common fixed points for four self-mappings that are compatible with type(β)in an intuitionistic fuzzy metric space. This paper also presents an example of a common fixed point that satisfies the conditions of Theorem 4.1 in an intuitionistic fuzzy metric space.