On-Line UPS 기능 내장형 ESS 설계 및 적용

권용효(Yong-Hyo Kwon),김말수(Mal-Soo Kim),오기형(Gi-Hyeong OH),장성국(Sung-Kuk Jang),최종철(Jong-Chul Choi),박기원(Ki-Won Park) 대한전자공학회 2016 대한전자공학회 학술대회 Vol.2016 No.6

본 논문에서는 ESS(Energy Storage System)의 Battery측 DC 전압을 공유하여 기본적인 ESS구성에 On-Line UPS기능을 함께 가지는 Multi-Function ESS를 설계하고, 적용한 기술을 설명 한다. 용량은 PCS 250kW, Battery 190kWh, UPS 125kW용량으로 구성하였으며, UPS는 125kWh 2Set를 이중화하는 구성으로 설계 하였다. On-Line UPS 기능 내장형 ESS 전체 제어는 PMS를 통해 이루어지며, 기본적으로 계통연계(GC), 독립운전(GI), GC와 GI가 센싱을 통해 자동으로 절체되는 Auto Mode 제어 모드를 가지며, TOU Application 운영이 가능하도록 제어기를 구현하였다. 또한 PMS는 Battery SoC를 모니터링하여, 사용자가 ESS와 UPS운영을 필요에 따라 용량을 정의하고 운영할 수 있도록 하였다. 관련기술을 기본/상세 설계 후 제작하여, 기능 및 성능에 대한 시험 검증 후 실제 부하와 연계하여 실증한 사례를 기술 한다.

두경부 편평세포암에서 형질전환 성장인자-알파(TGF-α)의 발현에 관한 연구

도남용,이승학,김완수,김경일,이동용,김용기,최봉남 조선의대 1996 The Medical Journal of Chosun University Vol.21 No.2

龍潭댐 建設에 따른 水質豫測

金煥起,梁奉龍,李正元 全北大學校 附設 都市및環境硏究所 1990 都市 및 環境硏究 Vol.5 No.-

This paper was the study on the change of the water quality an water quality management of reservior when Yong-dam dam constructed. The results obtained are as follows, water quality of river in surroundings area was BOD 1-2 ㎎/ℓ, TKN 1 ㎎/ℓ, T-P 0.03-0.013 ㎎/ℓ. Results from calculatin of the pollution loading of conteminations according to environmental factor, water quality was calculated to BOD 0.87 ㎎/ℓ, T-N 0.07 ㎎/ℓ. Because of increased of inlet nutrient, nutrient conditions in Yong-dam reservior will generated to eutrophication. Therefore, methods for control and management nutrition conditions are must be intercept and control to inflow of nutrient that included to water and wastewater.

실과교육에서 환경 친화력 향상을 위한 교수 자료 개발에 관한 연구

박행모,방기혁,김용익,기용주,김재남 광주교육대학교 초등교육연구소 2000 初等敎育硏究 Vol.15 No.1

The purposes of this study were to investigate possibilities and objectives of environmental education, and to analyze the environmental content elements available in the 7th curriculum, and to suggest strategies for the development of teaching materials for the improvement of pro-environmental power in practical arts education. This study was carried out through review of literature and discussions with panels of judges composed of experts in the environment related fields. The results of this study were as follows; 1)It was identified that an environmental education through practical arts subject was very efficient because principles of environmental education coincided with characteristics of practical arts education which emphasizes on real life, direct experience, and inter-disciplinary approach. 2)It was identified that an environmental education in elementary school was reflected on different courses in a distributed way, contents related to the environmental education such as resources, environmental conservation, an environmental hygiene has been included in the practical arts subject from the 1th curriculum to the 7th curriculum of the elementary school. 3)It was identified that contents such as orientation of jobs related an environment, separate garbage collection, food hygiene, recycle of waste articles, environmental pollution, and an environmental conservation could be reflected in the 7th curriculum. 4)Proposed strategies for developing teaching materials related to the improvement of pro-environmental power in practicalarts education ware a consideration of environment education frame in entire school system, an emphasis of practical and experience, the maximum uses of concrete stimulus, the uses of various places and facilities, the active uses of web site through internet.

만성중이염의 골도청력변화

박선홍,노용훈,이도용,나한조,김용기,최봉남,도남용 朝鮮大學校 附設 醫學硏究所 1996 The Medical Journal of Chosun University Vol.21 No.1

We have usually experienced bone conduction impairment in chronic otitis media, but it is unclear that raised bone conduction threshold is due to the reflection of cochlear dam- age and / or Carhart effect ( an artificial elevation of bone conduction threshold due to conductive defect ) or both. The purpose of this study is to verify the influence of the artificial elevation of the bone conduction threshold in chronic otitis media and to estimate Carhart effect. A total of 336 cases of tympanoplasty with unilateral chronic otitis media without any other causes of sensorineural hearing loss was studied. The average threshold levels of the bone conduction in diseased ears ranged from 18.5dB at 4kHz to 12.1dB at 250Hz The longer duration of the disease, the larger perforation size, the more severe damage of the middle ear structure and the presence of the cholesteatoma made bone conduction threshold increased. The postoperative thresholds of bone conduction were Improved in 36 cases (40.4%) of the 89 cases that underwent operation with type I tympanoplasty technique without electrie drilling. The degree of the maximal improvement was 14.3dB at 2000Hz and the minimum was 8.8dB at 250Hz. but these result did differ from a statistically significant degree. The result suggest that the bone conduction threshold in chronic otitis media is elevated artificially by conductive defect and improved by successful reconstructive surgery.

대나무 섬유소를 이용한 섬유보강 콘크리트의 역학적 특성

류현기,권용주,신상용 忠州大學校 2009 한국교통대학교 논문집 Vol.44 No.-

This study is a experiment on the mechanical properties of concrete according to the fiber additional quantity of bamboo. The experiment and analysis results are as the following. The slump as a quality of the concrete not to harden showed to decrease more remarkably for a slump value than the plain according to the increment of cellulose additional rate. Air quantity showed to increase only in 0.2% fiber additional rate and to get out of KS allowable error of bad air content in 0.4% and 0.6%, and capacity mass by unit showed a reverse tendency against air quantity according to the change of cellulose additional quantity. Compression intensity as a quality of hardening concrete showed collectively a tendency to decrease in the remnant past days except only 0.6% at the standard past day 愀8 and the initial 3 days. Pulling intensity showed to increase more than the plain in all past days according to the change of fiber additional quantity of bamboo, and bending intensity also showed to be higher revelation intensity than the plain in the measurement result at the standard past day 28. In the result of length change rate, we can find the bigger the cellulose additional rate as a special quality increased, the more it decreased according to the pass of the past day.

우리나라 파프리카 수출단지 및 선과장의 병해충 조사

김기돈,이시원,강은하,신용길,전재용,허노열,이흥식 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.2

The disease and insect were surveyed locally in greenhouse, fruit packing house and store house of 51 farms in 13 towns having purpose of paprika exportation. By analysis, various disease and insect were not only founded locally but more ones detected in farms having old facilities and no natural enemy. We found 15 pathogens such as Fusarium spp., Alternaria solani, Leveilluila taurica, PepMV (Pepino mosaic virus) and TMV (Tobacco mosaic virus) in greenhouse, Fusarium spp. in fruit packing house and Penicillium spp. in store house. We found 15 insects in greenhouse such as Bemisia tabaci, rialeurodes vaporariorum and Myzus persicae in greenhouse, Hylobitelus haroldi in fruit packing house. However, the problem quarantine disease and insect for importation and exportation were not detected in inspection time.

65세 이상의 노령층에서 고지혈증의 위험요인

김용배,장원기,황보영,김화성,안규동,이병국,이용진,김세훈,김승수,김승훈,김영록,김웅빈,이성수 순천향의학연구소 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

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체간의 등속성 트레이닝이 골밀도에 미치는 영향

김정기,김규호,임영조,박기용 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.20 No.1

This study was to investigate the influence of the isokinetic trunk training with different load speed on the bone mineral density. Y University male students were recruited as subjects and the isokinetic trunk extension and bone mineral density were measured three times every third week. The results of this study were as follows. 1. at 30。 /sec of load speed, the trunk extension of low speed training group (LTG) and compound speed training group (CTG) was increased significantly than that of the high speed training group (HTG) after three weeks of the training. 2. at 60。 /sec of load speed, the trunk extension of CTG was increased significantly than those of the LTG and HTG. 3. at 90。 /sec of load speed, the trunk extension of HTG was increased significantly than those of the CTG and LTG. 4. at 120。 /sec of load speed, the trunk extension of CTG was increased significantly than those of the LTG and HTG. 5. at 150。 /sec of load speed, the trunk extension of LTG and CTG was increased significantly than that of the HTG. 6. the increase of trunk extension did not affect the bone mineral density of L2, L3, and L4.

골다공증의 위험인자 : 아산시 지역 주민을 대상으로

김용배,장원기,황보영,김화성,안규동,이병국,이용진,이남수,이상건,이상범,이상우,이선정,이성수 순천향대학교 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

Objective : As the average lifespan of human increases, osteoporosis and osteoporosis-related fractures have become major health care problems. Despite recent advances in medical treatment, few studies have assessed the recognition of osteoporosis in general adults. This study examined the recognition of osteoporosis and analyzed the relating factors. Method : A population-based sample of 1086 adults in Asan-city, Korea was investigated with questionnaires and height, weight, Information regarding the general characteristics(gender, age, economic state), lifestylef exercise, smoking, alcohol),medical history(progestin, GH, steroid, calcitonin, PTH), demographic parameter, obesity, stress, and family history was collected through an interview using a structural questionnaire. The level of obesity was measured by the body mass index(BMI). BMD(Bone mineral density) at the lumbar spine and femoral neck was measured by dual energy X-ray absorptiometry. Osteoporosis was considered to be T-score below -2.5. Results : The prevalence of osteoporosis increased progressively with age, decreased with BMI and predominant in women by the result of x^(2) -test, T-test. Age, weight, BMI were significantly correlated with osteoporosis by the result of Pearson correlation ana1ysis(P<0.05). And age, gender, BMI, family history of osteoporosis were proved to be significant risk factors of osteoporosis by the result of multiple logistic regression(P<0.05). Conclusion : These results suggest that age, gender, BMI might be the most important risk factors of osteoporosis. And the history taking about family history of osteoporosis is helpful for diagnosing osteoporosis.