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The First Part of H-Bridge Multi-level Inverter for Fluidized Bed Combustion Boiler Secondary Air Fan (동해화력 순환 유동층 보일러 이차공기송풍기용 H-브릿지 멀티레벨 인버터 현장적용(1))

  • Ryu, Ho-Seon;Kim, Bong-Suck
    • Proceedings of the KIPE Conference
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    • 2007.07a
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    • pp.259-261
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    • 2007
  • 논문은 동해화력발전처의 이차공기송풍기를 가변 회전수 제어하여 소내 소비 전력을 절감하고 전동기의 직입기동에 의한 스트레스를 줄이기 위하여 실증 적용된 동해화력발전처 이차 공기 송풍기 구동용 H-브릿지 멀티레벨 인버터에 관한 것이다. H-브릿지 멀티레벨 인버터는 독립적으로 절연된 직류 부를 갖는 저압의 단상 인버터(셀 인버터)를 다수 직렬 접속하여 고압 3상 전압을 출력하는 Cascaded H-브릿지 전압형 인버터이다. 본 논문에서는 동해화력발전처에 실증 적용된 6.6kV, 1MVA급 인버터의 계통 병입 후 부하 변동 시험을 통하여 신뢰성을 입증하였다.

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A Study on the morphologic characteristics of each constitution's trunk (체간부의 사상체질별 형태학적 특징에 관한 연구)

  • Hong, Suck-chull;Lee, Su-kyung;Lee, Eui-joo;Han, Gi-hwan;Chou, Yong-jin;Choi, Chang-seok;Koh, Byung-hee;Song, Il-byung
    • Journal of Sasang Constitutional Medicine
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    • v.10 no.1
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    • pp.101-142
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    • 1998
  • 1. Objects The base of classification of Sasang Constitution was the different congenital formation of organs such as lungs, spleen, liver, kidneys, and it was expanded from the viscera region of lungs, spleen, liver, kidneys to the body shape of trunk. The researched about body shape of Sasang Constitution have had points of issues which derived by measurement with hands. But this study was measured the characteristics of body shape putting in importance of anatomical position with the computerized 3-Dimension scanner, which minimized the errors of measurement, and it was abled the cubic measurement such as volume, area of cross section as well as round length. 2. Materials & Method The examinee was healthy male 40 persons and female 20 persons from 20's to 40's, who was diagnosed by the specialist of Sasang Constitutional Medicine. The body shape was measured round length, area of cross section, and volume of 31 anatomical points and the 25 hypothesis with the Rapid 3D Color Scanner Model 3030 RGB/PS. And the characteristics of each constitution's body shape was derived. 3. Results & Concousion In female, Taeumin had the largest trunk and Soeumin had the smallest trunk compared to other constitution, but Soyangin had only the smallest neck. Soeumin has the smallest round length of nipple and the $CV_{12}$, and Soyangin has the smallest breadth of ASIS. Soyangin had the smallest volume from thyroid bone to the highest points of armpits and from sternum to nipple. Taeumin had the largest volume from sternum to the $CV_{12}$ and from sternum to xiphoid process. In male, Taeumin had the largest trunk and Soeumin had the smallest trunk from the level of thyroid bone to ASIS. Soyangin has the longest distance and Soeumin has the shortest distance from nipple to the lowest of breast. Taeumin had the largest volume of trunk and Soeumin had the smallest volume of trunk. In the ration of four-Cho, Taeumin had the longest distance from the highest points of armpits to nipple and Soyangin had the shortest distance of that. Soyangin had the smallest ratio of the height of upper middle cho. Soeumin had the smallest ratio from the $CV_{12}$ to navel among trunk. In the correlation among the four Cho, Taeumin had the negative correlation between the Upper-Cho and the Lower-Middle-Cho significantly.

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A Study on the Effects of Solely Operated Beauty Salon's Relational Benefits on Recommendation and Defection Intentions: Mediating Effects of Customer Satisfaction (1인 미용실의 관계혜택이 추천의도와 이탈의도에 미치는 영향에 관한 연구 : 고객만족의 매개효과)

  • Jeon, Seon-Bok
    • Journal of Digital Convergence
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    • v.14 no.1
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    • pp.413-425
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    • 2016
  • This study investigated what effects the relational benefits perceived by the customers of solely operated beauty salons have on customer satisfaction, recommendation intention, and defection intention through the convergence of cosmetology and business management. For this, a total of 322 customers of solely operated beauty salons were chosen as final valid samples. For data analysis, frequency analysis, reliability analysis, confirmatory factor analysis, and correlation analysis were performed using SPSS 15.0 and AMOS 18. For a hypothesis test, lastly, path analysis was conducted using structural equation modeling. The study results found the following: First, among the relational benefits perceived by the customers of solely operated beauty salons, confidence benefits and social benefits had a positive effect on customer satisfaction. Second, the relational benefits perceived by the customers of solely operated beauty salons had a positive effect on recommendation intention. Third, confidence benefits and social benefits had a negative effect on defection intention. Fourth, customer satisfaction had a positive effect on recommendation intention. Fifth, customer satisfaction had a negative effect on defection intention. Sixth, in relationship between the relational benefits perceived by the customers of solely operated beauty salons and recommendation/defection intention, customer satisfaction revealed partial mediating effects.

THD Analysis of Comparison Between Cascade H-bridge Inverter and Cascade H-bridge NPC Inverter (Cascade H-bridge 인버터와 Cascade H-bridge NPC 인버터의 THD 비교분석)

  • Park, Woo-ho;Kang, Jin-Wook;Hyun, Seung-Wook;Hong, Seok-Jin;Won, Chung-Yuen
    • Proceedings of the KIPE Conference
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    • 2016.07a
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    • pp.103-104
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    • 2016
  • 기존 Cascade H-bridge 인버터 토폴로지는 커패시터나 다이오드가 없이 스위치로 구성되어 있으며, 필터 없이 정현파와 유사하게 구현할 수 있다. 또한 출력전압 레벨이 높을수록 정현파와 유사하게 되어 고주파가 줄어들며, 각 셀을 직렬로 연결하면 입력전압보다 높은 출력전압 갖는다. 본 논문에서는 기존 Cascade H-bridge 인버터와 NPC(Neutral Point Clamped)가 결합한 Cascade H-bridge NPC 인버터를 제안하였다. Cascade H-bridge NPC 인버터는 기존 Cascade H-bridge 인버터 특성과 유사하며, Cascade H-bridge 인버터와 NPC 인버터의 장점을 가지고 있다. Cascade H-bridge 인버터와 Cascade H-bridge NPC 인버터를 시뮬레이션 통해 THD(Total Harmonic Distortion) 비교분석하였고 시뮬레이션은 PSIM 9.1.4을 가지고 검증하였다.

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A CLINLCAL STUDY OF the TYPE OF DISEASE AND SYMTOM ACCORDING TO SASANG CONSTITUTION CLASSWICATION (in the field of questionnaire analysis) (체질진단분류(體質診斷分類)에 따른 질병(疾病) 및 증상유형(症狀類型)에 관한 임상적 연구 - 문진표를 중심으로 -)

  • Kim, Jong-Wean
    • Journal of Sasang Constitutional Medicine
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    • v.8 no.1
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    • pp.337-347
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    • 1996
  • The 73 outpatients who had been treated in the Oriental Medical Hospital at Dong Eui Medical Center have participated in this study. The following conclusions were made in comparison with the type of disease and symptom and sasang constitution classification. (in the field of questionnaire analysis) 1. The symptom of "weight loss" is significant differences in sasang constitution classification. The frequency of Taeeum goup is more than Soyang group and Soeum group. 2. The symptom of "vomitig" is significant differences in sasang constitution classification. The frequency of Taeeum goup is more than Soyang group and Soeum group. 3. The symptom of "hoarseness" is significant differences in sasang constitution classification. The frequency of Soeum goup is more than Soyang group and Taeeum group. 4. The symptom of "respiratory distress" is significant differences in sasang constitution classification. The frequency of Taeeum goup is more than Soyang group and Soeum group. 5. The symptom of "arthralgia" is significant differences in sasang constitution classification. The frequency of Soyang goup is more than Taeeum group and Soeum group. 6. The symptom of "menstrual pain" is significant differences in sasang constitution classification. The frequency of Soeum goup is more than Soyang group and Taeeum group. 7. The analysis of past history and sasang constitution classification didn't show any significant differences. Only the analysis of past history and age show significant differences. I think that it is necessary to go deep into the clinical study of the type of disease and symptom according to sasang constitution classification.

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A Study of Incentive System Problems for Busan.Gwangyang Port (부산항.광양항 인센티브제도의 문제점)

  • Won, Yangyeon;Kim, Dogeun
    • Journal of Korea Port Economic Association
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    • v.29 no.1
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    • pp.23-45
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    • 2013
  • This paper aims to identify the problems of incentives and find a solution to them by empirically analyzing the port incentives and the development of cargo volume. The current method of paying performance incentives and cargo-increase incentives makes it is possible for shipping companies to get the maximum incentives just by regulating cargo volumes without increasing them. Since the processing volume of transshipment cargo of the Busan port is over the volume eligible for the maximum incentive determined by the tie-up of shipping companies, the transshipment cargo can decrease. The incentive of the Busan port based on the cargo record and increase does not affect the increase of transshipment cargo, only to suffer a loss, and thus a new incentive system is needed that does not allow shipping companies to regulate cargo volumes. Based on the result of this study, We have to apply the even-handed incentive rule which pays the incentive for the cargo volume of the pertinent year with the unit price per 1 TEU to avoid the chicken game among the ports.

Phosphorus Fractionations in Sediment of Mankyung and Dongjin River (만경강과 동진강 주요 지점 하천토사 중 형태별 인의 함량)

  • Han, Kang-Wan;Son, Jae-Kwon;Cho, Jae-Young;Kim, Hyo-Kyeong;Hwang, Seon-Ah
    • Korean Journal of Environmental Agriculture
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    • v.24 no.4
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    • pp.319-325
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    • 2005
  • Sediments of Mankyung and Dongjin river were examined on the physico-chemical properties and phosphorus fractionations. The content of total-P in sediment of Mankyung river ranged from 290.1 to 405.4 mg/kg (average = 363.4 mg/kg), while that in sediment of Dongjin river ranged from 304.1 to 431.7 mg/kg (average = 353.6 mg/kg). In both rivers, the total-P was highest in June to September. It is presumed that surficial sediment in arable land flowed into the rivers with rainfall-runoff. Phosphorus fractionations in Mankyung and Dongjin river were apatite-P 52.1% and 42.7%, residual-P 27.3% and 34.2%, nonapatite inorganic-P 18.1% and 22.5%, and adsorbed-P 0.6% and 0.6%, respectively. Adsorbed-P in sediment was the most scarcity fraction. It thus appears that adsorbed phosphorus was not effected in aquatic ecosystem. But nonapatite inorganic-P would be highly released under changes of redox condition and pH in aquatic ecosystem.

사업체기초통계 - 2007년 국내 인쇄물 총생산 8조8000억원

  • Park, Seong-Gwon
    • 프린팅코리아
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    • v.8 no.2
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    • pp.58-61
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    • 2009
  • 통계청이 최근 발표한 '2007년 기준 사업체기초통계조사 보고서(9차 개정)'에 따르면 전국 1인 이상 인쇄사업체에서 생산한 인쇄물은 8조8306억8208만2000원으로 추산됐다. 2007년 현재 등록된 종사자 1인 이상 인쇄 및 인쇄관련 산업의 총 사업체는 1만 7767개사로 전년도의 1만7631개사보다 0.8%증가한 것으로 집계됐다. 종사자도 2006년도의 6만7417명보다 11.6% 늘어난 7만 5231명을 기록했다. 그리고 종사자 10인 이상 인쇄 및 인쇄관련 산업 사업체는 1402개사로 종사자는 3만18명이며 생산액은 3조5127억6200만원으로 집계됐다. 한편 통계청은 2007년을 기준으로 정확한 통계치를 위해 기준 사업체당 종사자 수를 5인 이상에서 10인 이상으로 변경했다.

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A Study on The Housing Consumption Problem in Young Single-Person Household - Focusing on Reduction of Housing Area - (서울시 청년 1인 가구 주거 문제 분석 - 주거소비 면적 감소 현상을 중심으로 -)

  • Jo, Haeun;Kim, Euijune
    • Journal of the Korean Regional Science Association
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    • v.34 no.1
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    • pp.49-60
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    • 2018
  • The purpose of the study is to analyze the housing problems of single-person household in 20-35 age group. Using the survey of Household's Consumption in 2014, we estimated the housing demand function of young single-person household in Seoul. As a result, the coefficient of the permanent income for young single-person household housing was significantly lower than other groups and the housing demand was also lower than others. Since current income isn't come up to permanent income enough, the housing consumption of young single-person household shrinks. It implies the role of the housing financial market is less activated. That is, the difficulty of realization of permanent income and lack of housing finance are the main cause of the imbalance of housing demand of one young person. Therefore, it implies that in order to alleviate the housing problem of the young single-person household, a policy to balance the permanent income with the housing demand is needed.