• 대한간호
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• 제17권2호통권94호
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• pp.66-73
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• 1978

A Study on the Leadership of three different College Woman''s Students Jung Suk Han The main purpose of this study is to find the interrelationship among Leadership style, Authoritarian personality, Perceptual orientation, for the three different college

• 환경영향평가
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• 제20권5호
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• pp.757-764
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• 2011

This study is performed to clarify the fish fauna and fish habitat of downstream of Singok submerged weir within Han River estuary during April ~ December 2009. It was studied at the nine sites of Han River estuary area. The three of them were located in the mainstream of Han River and six of them were located in three wetlands which as Sannam, Janghang and Dolbangguji. Total fish fauna was identified as 9 order 15 family and 38 species (2,230 individuals). It was divided as 8 order 11 family 28 species from three sites in the mainstream of Han River and as 5 order 8 family 19 species in waterways at mud flats of three wetlands. It was made up the fish fauna as 3 order 4 family 12 species during the survey period at the waterways in the rice paddies. Hemibarbus labeo was dominant species in the whole research sites and waterways at mud flats. Carassius auratus was dominant species in the waterways between rice paddies and Chelon haematocheilus was dominant species in mainstream of Han River estuary.

• 복식
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• 제51권4호
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• pp.113-128
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• 2001

The objective of this study is to research the costume of Three Han to be recorded in -$\ulcorner$Samkukgy$\urcorner$ Tongyjeon. They were written tattoos, broad head, physique, hair style, dress. accessories-lnsu, beads, head dress, shoes and cloths in Tongy-jeon. The results of this study are as fellows: Tattoos were common in Three Han. Those may be carved by chinese ink on body except a face. Broad head was Byonhan and Jinhan s customs. The physique of Mahan and Byonhan s men was tall and big. The hair style was just topknot not to put on a hat in Mahan, long hair In Byonhan and short hair for slaves in Jinhan. And then tattoos, flat head and skull, long hair style were the southern style. The dresses were two piece style-po and trousers. The shoes were made of leather. Those were the northern style. Eui-Chek, In-Su were royal gift of china. And they put valuable on beads, not gold, silver and golden embroidery cloths. This was different from other countries, And so we can find the variety of cultures at that time. The varieties came from the southern, northern, china and unique style.

• 한국물환경학회지
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• 제25권2호
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• pp.221-226
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• 2009

We investigated the most effective cutting interval for underwater nutrient removal through cut off the emergent part of hydrophytes at artificial vegetation island (AVR) which was installed for the purpose of water quality improvement in Lake Paldang. We divided the planting area of Phragmites japonica into three parts according to the cutting intervals. The shoot height and relative growth rate of P. japonica, nutrient contents and biomass of cut off P. japonica were measured at each cutting interval. The amount of nutrients which were removed through cut off at each cutting interval was calculated. P. japonica showed full growth, 80% and 60% of full growth before first cut off at three-months, two-months and one-month cutting interval condition respectively. Three-month cutting interval condition showed the largest biomass of cut off P. japonica and one-month cutting interval condition showed the least. However the cut off P. japonica showed the highest content of nutrients at one-month cutting interval condition and the least at three-month cutting interval condition. The amount of phosphorus and nitrogen removal at two-month cutting off condition is the largest among three cutting interval conditions indicating that cut off the emergent part of P. japonica every two months is the most effective to remove the nutrients from water at AVR in eutrophic lakes.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2006년도 추계학술대회 논문집 광주전남지부
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• pp.112-113
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• 2006

The operational characteristics of the integrated three-phase flux-lock type superconducting fault current limiter (SFCL) were analyzed. The suggested three-phase SFCL consisted of a three-phase flux-lock reactor and three high-$T_c$ superconducting (HTSC) elements. The former has three windings wound on an iron core, each of which has the same turn's ratio between coil 1 and coil 2. The latter are connected in series with coil 2 of each phase. The integrated three-phase flux-lock type SFCL showed the operational characteristics that the fault phase could affect the sound phase, which resulted in quenching the HTSC element in the sound phase. Through the computer simulation applying numerical analysis for its three-phase equivalent circuit, the fault current limiting characteristics of the integrated three-phase flux-lock type SFCL according to the ground fault types were compared.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1988년도 전기.전자공학 학술대회 논문집
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• pp.73-76
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• 1988

In this paper, the governing equation of the three phase linear induction motor is induced by the method that current in the primary winding is assumed as a current sheet. The steady state flux and the flux that is produced by end effect are mathematically analysed by electromagnetic equation. Each thrust of these flux is respectively induced. So in this paper, it is proved that linear motor is highly affected by end effect at high speed and speed-thrust characteristics of three phase linear induction motor are shown by frequency variation in the actual model.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1994년도 하계학술대회 논문집 C
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• pp.1283-1285
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• 1994

A three-layered piezoelectric ceramic transducer is fabricated with three piezoelectric ceramic disk transducers and two sheets of thin insulator. Its equvalent circuit is derived from the Mason's model of a thickness-driven piezoelectric transducer. We applied the electric input near its fundamental resonant frequency to the center transducer and connect the output voltages across the left and right transducers in series to the resistor load. Then we investigate the load characteristics at resonant frequencies under various resistor loads and the frequency characteristics near the resonant frequency under no load. Moreover, symbolic expressions for input impedances, voltage ratios, resonant frequencies, and bandwidths have been derived. The values calculated from those symbolic expressions are shown to agree well with the measurement values.

• 대한본초학회지
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• 제33권4호
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• pp.27-33
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• 2018

Objectives : The roots of Dipsacus asper had been used as the herbal medicine "Cheon-Sokdan" in Korea. Moreover, the roots of Phlomoides umbrosa were used as "Han-Sokdan." In the present study, a comparative anatomical comparison of Cheon-Sokdan, Han-Sokdan, and Ilbon-Sokdan were conducted, because Ilbon-Sokdan, the roots of Dipsacus japonicus, was regarded as substitute of Cheon-Sokdan. Methods : For this study, permanent preparations were made using a paraffin embedding method. Anatomical features of these three Sokdans were observed using a light microscope. Results : The starch grains of parenchyma cells and the amounts of calcium oxalate crystals hardly differed among the three plants. Particularly, the longitudinally-sectioned vessels of the three plants showed a wide variety depending on the focal depth of the light microscope. Therefore, these features could not be considered as obligate criteria for distinguishing these plants. The shape of the xylem was linear in Cheon-Sokdan and Ilbon-Sokdan, whereas that in Han-Sokdan was wedge-shaped. The phloem of Cheon-Sokdan and Ilbon-Sokdan were rhomboid, whereas that of Han-Sokdan was thimble-like. Therefore, the shape of xylem and phloem appeared as good criteria for distinguishing Han-Sokdan from the other plants studied. Cheon-Sokdan and Ilbon-Sokdan showed characteristics similar in many parts. However, in the xylem of Ilbon-Sokdan, fiber bundles were more developed than those of Cheon-Sokdan. Therefore, the development of fiber bundles in xylem was considered suitable for distinguishing between Cheon-Sokdan and Ilbon-Sokdan. Conclusions : The identification-keys established in this study would be helpful for identifying microscopic features among the three Sokdans.

• 보험의학회지
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• 제3권1호
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• pp.269-273
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• 1986

We have examined 5,304 cases of claims by death that had occured for recent three years from January, 1983 to November, 1985 in Dae han kyoyuk Ins. Co. As a result, we came to following conclusions: 1. The total numbers of the deaths are increased for three years, but the deaths, classifying by medical examinations are decreased. 2. The great part of the death were due to Accident death(27.7%), occupied Number 1, malignant neoplasm(23.9%) Number 2 and Circulatory system disease(23.9%), which were the main canses of death in the insured people. 3. With age, section ranging from 30-39 years of death cases took extremely large portions by 35.2%. 4. For the period elapsed, the deaths within 2 years to ander 3 years, 18.6%, above 6 years, 18.6%, thus the period elapsed was longer more and more as years go. 5. By the deaths of malignant neoplasm, hepatoma in male and gastric cancer in female were important causes of death.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1987년도 전기.전자공학 학술대회 논문집(I)
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• pp.596-600
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• 1987