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SOME RESULTS ON REDUCIBILITY AND STRONG REDUCIBILITY
조용욱 영남수학회 2010 East Asian mathematical journal Vol.26 No.3
We investigate some properties of strongly reduced near-rings and left regular near-rings, also show that a strongly reduced near-ring is reduced. Next, we will characterize that reducibility, strong reducibility and left regularity in near-rings.
Generalized Prime Ideals in Non-associative Near-rings I
조용욱 영남수학회 2012 East Asian mathematical journal Vol.28 No.3
In this paper, the concept of ∗-prime ideals in non-associative near-rings is introduced and then will be studied. For this purpose, first we introduce the notions of ∗-operation, ∗-prime ideal and ∗-system in a near-ring. Next, we will define the ∗-sequence, ∗-strongly nilpotent and ∗-prime radical of near-rings, and then obtain some characterizations of ∗-prime ideal and ∗-prime radical r_s(I) of an ideal I of near-ring N.
Near-rings with left Baer like conditions
조용욱 대한수학회 2008 대한수학회보 Vol.45 No.2
Kaplansky introduced the Baer rings as rings in which everyleft (or right) annihilator of each subset is generated by an idempotent.On the other hand, Hattori introduced the left (resp. right) P.P. ringsas rings in which every principal left (resp. right) ideal is projective.The purpose of this paper is to introduce the near-rings with Baer likecondition and near-rings with P.P. like condition which are somewhatdierent from ring case, and to extend the results of Armendariz andJøndrup.
Some extensional properties of modules
조용욱 대한수학회 2006 대한수학회보 Vol.43 No.3
The purpose of this paper is to describe some char-acterizations on rational and t-rational extensions of modules, todetermine the forms oft-rational extensions of givent-torsion freemodule for a left exact radicalt and investigate the maximal t-rational extensions of modules.
EMBEDDING PROPERTIES IN NEAR-RINGS
조용욱 영남수학회 2013 East Asian mathematical journal Vol.29 No.3
In this paper, we initiate the study of zero symmetric and constant parts of near-rings, and then apply these to self map near-rings. Next, we investigate that every near-ring can be embedded into some self map near-ring, and every zero symmetric near-ring can be embedded into some zero symmetric self map near-ring.
A STUDY ON NEAR-RINGS WITH IFP CONDITIONS
조용욱 한국수학교육학회 2011 수학교육 학술지 Vol.2011 No.1
In this paper, we begin with to introduce the concepts of IFP and strong IFP in near-rings and then give some characterizations of near-rings with IFP con-ditions. Next we derive reversible IFP, and then equivalences of the concepts of strong IFP and strong reversibility. Finally. we obtain some conditions to become strong IFP in right permutable near-rings and strongly reversible near-rings.
조용욱 대한안전경영과학회 2014 대한안전경영과학회지 Vol.16 No.4
The objective of this study is to provide improved methodology based on the IPA method. One case studies are solved by the proposed method. this study present the method that give value to use SN(Signal-to-Noise) ratio in IPA. A case study of lecture satisfaction are solved by the proposed method and the existing method. Also, the result is compared with the existing method using Mean and the proposed method using SN ratio.
다구찌 방법을 이용한 β-carotene 대량생산의 최적환경 조건 결정
조용욱,박명규 대한안전경영과학회 2000 대한안전경영과학회지 Vol.2 No.3
The Robust Design method uses a mathematical tool called orthogonal arrays to study a large number of decision variables with a small number of experiments. It also uses a new measure of quality, called signal-to-noise (S/N) ratio, to predict the quality from the customer's perspective. Thus, the most economical product and process design from both manufacturing and customers' viewpoints can be accomplished at the smallest, affordable development cost. Many companies, big and small, high-tech and low-tech, have found the Robust Design method valuable in making high-quality products available to customers at a low competitive price while still maintaining an acceptable profit margin. A study to analyze and solve problems of a biochemical process experiment has presented in this paper. We have taken Taguchi's parameter design approach, specifically orthogonal array, and determined the optimal levels of the selected variables through analysis of the experimental results using S/N ratio.