A Generalized Equivalence relation

Sung, Yeoul-Ouk,Lee, Seung-Bae 公州大學校 工學硏究院 生産技術硏究所 2005 論文集 Vol.13 No.-

In the this paper, We introduce the concept of t-fuzzy equivalence relation on a set, and to prove that there exists a correspondence between t-fuzzy equivalence relation and t-fuzzy partitions, and to characterize the fuzzy difunctional relations in terms of its strong t-level subsets.

Some properties of t-Fuzzy Equivalence Relations

Sung, Yeoul Ouk,Ro, Young Soon 公州大學校 基礎科學硏究所 2004 自然科學硏究 Vol.11 No.-

한 집합에 티 퍼지 동치관계를 도입하여 티 퍼지 동치관계와 티 퍼지 분할사이에 일대일 대응이 존재함을 밝혔다. In this note we introduce the concept of a t-fuzzy equivalence relation on a set and give some results in connected with such relations. In particular, we prove that there exists a correspondence between t-fuzzy equivalence relations and t-fuzzy partitions. In addition, we characterize the fuzzy difunctional relation in terms of its strong t-level subsets.

Fuzzy Functions and There Fundamental Properties : 퍼지 함수에 관한 고찰

성열욱 공주대학교 기초과학연구소 2000 自然科學硏究 Vol.9 No.-

퍼지 집합의 개념이 Zadeh에 의해서 처음 소개된 이후 수학의 여러 분야에서 많은 연구성과가 이루어져 왔다. 그 중, 퍼지함수의 개념은 Nemitz와 Sasaki에 의해서 도입되었지만, 크리습함수의 퍼지화 과정에서 자유롭지 못하였다. 따라서 본 논문에서는 퍼지함수를 보다 자연스런 방법으로 정의하였고, 또한 퍼지함수와 관련된 기본 성질들을 연구하였다 In the present thesis, the fuzzy equality of two points of a crisp set which is more convenient than that in Coker and Sasaki and the fuzzy function having weaker conditions than that is given in Sasaki are redefined in much more natural way. Also many basic properties related to the various types of fuzzy function are established.

퍼지노름공간의 완비화

성열욱 公州大學校 基礎科學硏究所 1999 自然科學硏究 Vol.8 No.-

X. Y가 노름공간이고 ρ₁, ρ₂가 각각 X, Y에서의 lower semi-continuous 퍼지노룸이며 bounded support를 가질 때 Y가 퍼지완비이면 X에서 Y로의 모든 퍼지연속선형사상들의 집합은 퍼지완비노름 공간임을 증명하였고, 또한 [2] 의미에서의 퍼지공간거리에 퍼지노름공간의 개념을 소개하였다. Let X, Y be normed linear spaces, and let ρ₁, ρ₂ be lower semi-continuous fuzzy norms on X, Y respectively, and have the bounded supports on X, Y respectively. In this paper, we prove that if Y is complete, the set of all fuzzy continuous linear maps from X into Y is a fuzzy complete fuzzy normed linear space. Also, we introduce the concept of a fuzzy normed linear space on the concept of fuzzy metric spaces in [2].

동기유발을 위한 ARCS이론을 적용한 수업이 수학과 문제해결력 신장에 미치는 영향

성열욱,김상운 한국학교수학회 2001 韓國學校數學會論文集 Vol.4 No.2

All men's achievement and behavior is always based on motivation. It has been reported that learning motivation plays an important role to get achievement of study to approximately 16∼38%. Therefore, a lot of researchers agree that learning motivation must be required for learning achievement. This study focuses on "How behavior induces learning motivation from learners?" I adapted "the Attention, Relevance, Confidence, Satisfaction" which is supported by John. M. Keller in the model of ARCS to the course of teaching-learning in order to improve them systematically. The effectiveness and results of adaptation must be considered to solve the math problems.

소집단 학습을 통한 수학과 학습부진아 지도방안 연구

성열욱,신경순 한국학교수학회 2001 韓國學校數學會論文集 Vol.4 No.2

It is necessary that at any rate we try to decrease underachievers by learning deficiency in mathematics to extreme limits under circumstances that mathematics becomes more requires daily in the 21st century's informative society. However, the traditional teaching method causes a lot of problems in elevating the needed ability for the newly changing society. Accordingly, for the purpose of letting underachievers by learning deficiency have much interest in mathematics, seek the qualitative elevation, have the feelings of self-confidence and accomplishments, escape from desperation, and also teachers choose the activities of small groups, design teaching plans, apply those to teaching-learning activities and finally verify the effect, this researcher sets up a hypothesis as follows: 1. The teaching method through small groups will be effective for the accomplishments of underachievers in mathematics. 2. Its method will bring out the meaningful change in the emotional areas of mathematics. Therefore, so as to prove the above hypothesis, the results through the theoretical approach and practicing learning by small groups have turned out to be positive.

現行 中學校 數學 敎科書의 比較 分析 硏究 : On the Center of the Eight Kinds of Textbooks 2 Grade Used in Middle School 中學校 2學年 8種 敎科書 中心으로

국승오,성열욱 공주대학교 사범대학 과학교육연구소 2000 과학교육연구 Vol.31 No.1

In this study, the eight kinds of the mathematical textbooks 2 used in middle school are analyzed into the various comparative analyzes, the side of the constitution in mathematical contents, statical standpoints and especially the lacking parts in generally about some subject matters and expressions are pointed out the results of this study are as follows; 1. Conclusion ① Form the unit and the construction of the field in each textbook, the four kinds of textbooks comparatively seems to describe on the curriculum of the Educational Department, and the others seem to change it in diversity. This facts might be expected by differences on the characters of writers. ② From the proportion of pages which are alloted to each part of the textbook, textbook G seems to arrange the main text most simply, and textbook B seems to describe it in the largest quantity. ③ According to the quantities of the problems treated in each unit, textbook B treats the too many problems, and textbook A does it fewest. Under these facts, it is difficult to determine whether the most quantities of the problems are effective or not. ④ In the comparison with the words, the characters of each textbooks are distinctive considerably. As the result of this study, the different of the expressions doesn't cause a trouble. Because the different words and the marks can cause the confused questions and lack of confidence, the unity of the words and the marks is more effective in the Present education. ⑤ In the introduction of the persons in each unit, textbook A introduces 4 mathematicians, B does 16, C does 1, D does 8, E does 3, F does 19, G does 2, H does 8. Also there are considerable differences of the person's Chronicles and the spelling rules of the persons' names of the each unit. Textbooks as a model should be unified in these differences. ⑥ In the contents and the expression of textbook, there were considerable errors. This fact is very important problems in the educational work. Therefore, textbook as a model should be written accurately and precisely. 2. Suggestion I'd like to suggest as follows on the basis of this study. ① More detailed items are needed in the curriculum of the Educational Department. ② Enough time should be given to the writers, and the inspection for the textbook should be made through the first and the final steps. ③ We had better make more teachers that know thoroughly educational environment, student' psychology and desire write a textbook when a textbook is written. ④ The editorial data for the unified words and the marks should be made before suggesting the new curriculum of the textbook in the Educational Department. ⑤ We should divide into two levels at least and develop a textbook to fit student's ability and level.

Fuzzy Difuntional Relation의 특성화

노영순,이덕호,성열욱 공주대학교 사범대학 과학교육연구소 2000 과학교육연구 Vol.31 No.1

본 눈문에서는 fuzzy difunctional relation 동치조건들을 소개하였고 이를 이용하여 fuzzy difunctional relation과 관련된 일부 결과를 제시하였으며 또한 반군에서의 퍼지합동관계를 α-cut로 특성화 하였다. In this paper, we shall introduce equivalent conditions of the fuzzy difunctional relation, give some results in connection with fuzzy difunctional relations and characterize the fuzzy congruence relation on a semigroup in terms of its α-cut. Also, closed relationship between fuzzy difunctional relations and fuzzy congruence relations will be revealed.

정칙 개 주기성에 관하여

노영순,이덕호,성열욱 공주대학교 사범대학 과학교육연구소 1999 과학교육연구 Vol.30 No.1

변환군에서 정규약개주기성에 대한 몇가지 성질을 조사하고 본 논문의 정리 3과 4를 증명하기 위하여 보조정리 1과 2를 보이고, 공간 X가 콤팩트이고 T가 점열정규약개주기이며 S가 T의 모든 syndetic invariant 부분군에 대하여 약개주기 일 때 T는 equicontinuous가 됨을 보였다.

OSS 게이트웨이의 보안 요구사항

안치홍,석승학,성열옥,한근희,정자욱 공주대학교 생산기술연구소 2002 論文集 Vol.10 No.-

OSS systems that are represented by the carrier preselection and number portability services con no longer be operated by themselves in their own domains since the freedom and various changes in electronic commerce require the interconnections between the heterogeneous OSS systems. However, since the cost of direct internonnections of OSS systems is so enormous we must consider the use of OSS gateways to interconnect heterogeneous OSS systems. In this research, we analyze the security weakness for interconnecting OSS systems throught gateways and suggest the security requirements for the OSS gateway.