• 대한전기학회:학술대회논문집
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• 대한전기학회 1990년도 하계학술대회 논문집
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• pp.401-404
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• 1990

A new control method of solar cell output using PWM chopper is described. Theoretical analysis and comparision for all sorts of system are also discussed for improving photovoltic system efficiency. It is expected that the result of this study will be utilized to some other DC or AC application equipments.

• Korean Journal of Mathematics
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• 제22권4호
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• pp.611-619
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• 2014

We in this note study a ring theoretic property which unifies Armendariz and IFP. We call this new concept INFP. We first show that idempotents and nilpotents are connected by the Abelian ring property. Next the structure of INFP rings is studied in relation to several sorts of algebraic systems.

• 전기의세계
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• 제19권5호
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• pp.8-16
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• 1970

The characteristics of dielectric absorption and dispersion in polymerized materials produced in Korea was investigated in MHz band and at several sets of temperature. For this study the theoretical basis stood on the Cole-Cole's empirical formula and it has been extended to the form convenient to investigate the observation. As the result, it has been confirmed that in most cases, two or much more sorts of dipole participate in dielectric propertics of these polymers and the materials containing aromatic molecular structure have, in general, greater loss angle than those constructed chain type molecular structure.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2000년도 The 7th International Symposium
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• pp.123-130
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• 2000

Sanchung-mok is a tall defoliate broad leaved tree grows in middle & north regions of our country. The leaves, twig and bark of this tree has apparent treatment action for fatty liver, hepatitis, hepatocirrhosis, liver cancer and etc. I, the writer of this article hereby present the result as we have acquired good result by dosing the sanchung-mok to many sorts of liver disease patients since 1998.

• 품질경영학회지
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• 제12권1호
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• pp.17-30
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• 1984

A computer method is developed for group technology layout and its simulation analysis. The method is composed of three phases: Phase I sorts the parts by its similar production routes and forms part families. Phase II plots the layout by machine cell and evaluates the group layout alternatives by the total process time analysis and the part travel distance evaluation analysis. Phase III also evaluates the alternatives by simulation analysis using SIMAN simulation software. All the computer programs are developed with BASIC except SIMAN simulation.

• 품질경영학회지
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• 제15권2호
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• pp.69-73
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• 1987

The aim of this study is to find out the optimal goods for the marketing research through analysing the factor effecting the marketing survey by using the experimental design method. The decisive effecting factors in relation with the marketing survey were investigated as follows; 1. A row effect (Ai; i = 1, 2, ... n) is the design sorts of woman-clothes bias. 2. A column effect (Bi; i = 1, 2, ... n) is the woman-consumer bias. In this paper the experimental design, execution and statistical analys is were conducted to find out the optimal goods for marketing research.

• Journal of Chest Surgery
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• 제19권1호
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• pp.148-152
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• 1986

Solitary plasmacytoma of the lung are extremely rare, and are sorts of plasma cell dyscrasia which are characterized by the elaboration of excessive amount of immunoglobulin or their constituent units. We experienced one case of plasmacytoma on the left lower lobe which was treated by left pneumonectomy. It was proven that the plasmacytoma produced immunoglobulin M and kappa chain by immunofluorescent technique. During the follow up period, 2 1/2 years after surgical removal of tumor mass, there were no local recurrence and dissemination.

• 대한한방내과학회지
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• 제12권1호
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• pp.68-76
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• 1991

After studying 20 sorts of referance materials including Hwangjenaegyung which discuss the causes and symptoms of SymRo the researcher has been led to the following conclusions ; 1. In the reference materials, Hyulmakhuso (血脈虛少) is listed as the first potential cause of Sim Ro. Gokwoonsingi (曲運神機) is listed as the second potential cause. 2. Holholhemang (忽忽惠忘) is listed as the most obvious symptom of Sim Ro. Kunaesangchang (口內生瘡) is listed as the second obvious symptom.

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.369.2-369.2
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• 2002

Rumex crispus (Polygonaceae) is a well known perennial plant. which is called So-Ri-Jaeng-Yi. growing in the field and on the roadside. It has been used as a Korean Folk medicine in treating of acute and chronic cutaneous disease. cathartics, fever and jaundice. Also, the seed of this plant has been used as only a folk medicine for the treatment of digestion problems, liver diseases and many sorts of tumor. So we examined analgesic activity, anti-inflammatory activities and hepatoprotective activity using MeOH extraction and BuOH fraction in this plant. (omitted)

• 복식문화연구
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• 제8권6호
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• pp.806-821
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• 2000

Each and everything named fashion together with clothes were limited in the boundary of women and men's wear has been slow and narrow in changing speed compared to women's, even there are some differences in accordance time. But maintaining the basic features, men's wear in the latter 20th century has undergone diverse change in the part of materials such as various synthetic fiber, glass, metal, artificial leather and the see-through fabric able to seeing the body wearing the clothes. Therefore, the aim and definition of this study is to present the systematic framework giving help to develop men's wear design newer and more various by considering moulding of materials which existing men's wear could not show up and by grasping material trend of men's clothes in 1990s. The results of the study were summarized as follows : (1) Material containing lustering is categorized as Velvet, Silk, Lustering materials by synthetic fiber and Lustering materials by additional substance. The Velvet generally acknowledged having something to feel womanly image shows the bisexual character coexisting feature of men and women after grafting with men'fashion. The Silk was endowed the role as means of pleasure to express beyond boundary of sex breaking the existing consciousness which men should wear male clothes, not considering differences between men and women. The lustering made by synthetic fiber expressed modern sensitivity aesthetically to the suit. The lustering materials made by additional substance is seen mixed masculine character with womanly character. (2) See-through materials are acknowledged as decadence beauty caused by expanding subjective awareness in beauty. (3) Materials by the sorts of Net is categorized as Lace, Knit The Lace expression seemed to emphases the human liberation of men and women and the humanity from liberation of subjecthood. The Knit can be felt both woman's image and man's image as bisexual image, not raising only one side sex. (4) Elastic materials offered the opportunity to approve exposure in a time when exposure of men's body was not granted ethically. (5) Leather was shown as indication of social status and inferiority and expression of collective resistance against sexual stagnation of men and women.