• Proceedings of the KIEE Conference
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• 1999.07d
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• pp.1624-1626
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• 1999

PD in defect of solid insulation system is very harmful since It often leads to deterioration of insulation by the combined action of the discharge ions bombarding the surface and the action of chemical compounds that are formed by the discharge. PD can indicate incipient failure, so it has been used to determine degradation of insulation. In this paper. we investigated PD in defects of solid insulation by using statical method and classified PD patterns with surface discharge, electrical tree and void discharge by using Kohonen network. we used peak charge, average discharge power, average discharge current, repetition rate, skewness, kurtosis, QN of the max pulse height vs. repetition rate $H_q(n)$ for analysis and classification.

• The Transactions of the Korea Information Processing Society
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• v.5 no.4
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• pp.995-1004
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• 1998

This paper presents an implementation of model checking tool for LTS process specification, which checks deadlock, livelock and reachability for the state and action. The implemented formal checker using modal mu-calculus is able to verify whether properties expressed in modal logic are true on specifications. We prove experimentally that it is powerful to check, safety and liveness for the state and action on LTS. The tool is implemented by $C^{++}$ language and runs on IBM PC under Windows NT.

• Journal of Haehwa Medicine
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• v.16 no.1
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• pp.31-40
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• 2007

Hominis placenta have been studied as herbal acupuncture because of it's limitation of use. The properties of Hominis placenta are warm and supplement of Jeong-Hyeol, Jin-Ki and I thought that Hominis placenta have various effectiveness. So I considered Hominis placenta in Dong-Eui-Bo-Gam which is famous comprehensive korean traditional medical book. Hominis placenta was mentioned parts of Sin, Chung, Hwa, Heo-Ro, Bu-In and most of them are mentioned in Heo-Ro part. As a source book, Eui-Hak-Ib-Mun was used the most. Prescription used in various parts as mental disease, forgetfulness, tuberculosis, fever, various malnutrition disease, sterility, but it's basic principle action is all supplement of Heo-Ro. In management of Hominis placenta, most useing method is heating with steam and most of additional medicinal stuffs had action of supplying Eum, Yang, Ki, Hyeol in composition of prescription.

• Journal of the Korean Mathematical Society
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• v.55 no.5
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• pp.1257-1268
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• 2018

In this article we first investigate a sort of unit-IFP ring by which Antoine provides very useful information to ring theory in relation with the structure of coefficients of zero-dividing polynomials. Here we are concerned with the whole shape of units and nilpotent elements in such rings. Next we study the properties of unit-IFP rings through group actions of units on nonzero nilpotent elements. We prove that if R is a unit-IFP ring such that there are finite number of orbits under the left (resp., right) action of units on nonzero nilpotent elements, then R satisfies the descending chain condition for nil left (resp., right) ideals of R and the upper nilradical of R is nilpotent.

• Journal of Environmental Health Sciences
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• v.30 no.5 s.81
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• pp.374-377
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• 2004

Dual actions are the most recently used delivery system in drug study. Dual-action agents are unique chemical entities comprised of two different type of antibacterial compounds covalently linked together in a single molecule in such a way that both components are able to exert their bactericidal properties. Crosslinked sulfadiazine-sulfanilamide such as antibiotics is synthesized by synthetic handle with glutaraldehyde. As a result, New synthetic antibacterial agent exhibited the broad antibacterial activities against Gram(+) and Gram(-) of 4 strains and a long durability supposing that the stomach and blood.

• Journal of Environmental Health Sciences
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• v.22 no.2
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• pp.19-24
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• 1996

Carbamates are generally used as insecticide, thus 5.7-dichloro-8~hydroxyquinolinyl- N-ethylcarbamate was newly synthesized. Its physical properties were determined and chemical structure was identified by means of I.R., nmr in addition to elemental analysis. The yield of addition, using triethylamine as catalyst, 5.7-dichloro-8-hydroxyquinoline and isocyanate was better than that of condensation of 5.7-dichloro-8-hydroxyquinoline with carbamoylchloride. The effct of the compound on rabbit's ileum, and antibacterial activity against Staphylococcus aureus, Salmonella typhi, Echerichia coli, and Pseudomonas aeruginosa were examined. The present organic synthesized compound showed the bacteriostatic action on salmonella typhi, escherichia coli, and pseudomonas aeruginosa, but no otherwise effect of contraction of rabbit's ileum in the concentration of $250 \mu g/ml$.

• Journal of Korea Multimedia Society
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• v.19 no.6
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• pp.1095-1105
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• 2016

This study is semiotic analysis about 'dumb ways to die' that is produced by Melbourne Railway of Australia in 2012. By analyzing the symbolic representations through 'Actants model' of A.J. Greimas, extract the relationship between signification of the represented object in 'dumb ways to die'. Greimas' model helps to analyze the semiotic interpretation action that occurs above a layer of discourse. In addition, this study is to compare the property to distinguish the Semiotic 'Actants' to cause the behavior of the recipient by represented in the same ideological situation. This can determine the properties of the signification and gauge the level of symbolic images that are reproduced in the discourse process. Accordingly, guidance to become a developer by extracting the reproduction principle of the video that causes a user's action.

• Journal of the Korean Mathematical Society
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• v.48 no.2
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• pp.301-309
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• 2011

Let R = $Mat_2(F)$ be the ring of all 2 by 2 matrices over a finite field F, X the set of all nonzero, nonunits of R and G the group of all units of R. After investigating some properties of orbits under the left (and right) regular action on X by G, we show that the graph automorphisms group of $\Gamma(R)$ (the zero-divisor graph of R) is isomorphic to the symmetric group $S_{|F|+1}$ of degree |F|+1.

• Journal of the Korea Computer Industry Society
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• v.3 no.9
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• pp.1189-1198
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• 2002

Policy base management system that can satisfy various user's request in distributed system environment recently and manage network resources efficiently is required. Described policy base management information consisted of ECA(Event-Condition-Action) rules so that efficient management of various communication network and consistent management policy may be available in this paper. Policy is consisted of Event, Condition and Actions to achieve when condition is satisfied. And we can present formality of dynamic function of management object as applying policy to ATM congestion control model been applying in real environment.

• YAKHAK HOEJI
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• v.6 no.2
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• pp.1-6
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• 1962

Clinical tests revealed that the extracts of Gelidium amansii (Gelidiaceae) had a anthelmintic action and further examinations were made on the anthelmintic components of this seaweed. This anthelmintic principle is absorbed on alumina and eluted from it by alkali solution. The active principle is absorbed on activated carbon from aqueous extract and eluted from it by methanol and it is not adsorbed on Amberite IR-120(H-form). This anthelmintic effective fraction was prepared by the use of this properties. Action of the active principle of Gelidium amansii was examined pharmacologically. The active principle of Gelidium amansii was found to decrease the tensity, tonus and mobility of Eisenia foetida(Savigny) nerve muscles. The active principle of this effective fraction was submitted to paper chromatography and spots to ninhydrin were detected at Rf; 0.30-0.31(yellow), 0.26(violet), 0.2(violet), 0.14-0.13(violet), 0.9(orange) and 0.04(violet).