BLDC 모터를 이용한 PV 양수 펌프 시스템

최성호,조정민,전기영,김성남,성낙규,김용주,한경희 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

In this paper, we adapted BLDC motor to PV water pumping systems to maintain high efficiency in the wide speed area. Also to design confidence, we adapted the vector control that drive the maximum torque at each speed limit. We designed optimal gain value of current, speed and pressure PI controller. Inverter gate pulse used Space Vector PWM to reduce torque pulsation of BLDC motor. Finally it was improve general matters of high water storage tank method by direct water supply pumping method.

생약제제인 이공산(異功散)의 Cisplatin 유도 신장독성 보호 및 항산화 효과

Lee, Kyung-Tae,Ahn, Kyoo-Seok,Chang, Sung-Goo,Oh, Soo-Myung,Jung, Jee-Chang 경희대학교 동서의학연구소 1999 INTERNATIONAL SYMPOSIUM ON EAST-WEST MEDICINE Vol.1999 No.1

Kyung-Tae Lee, Kyoo-Seok Ahn¹, Sung-Goo Chang², Soo-Myung Oh²and Jee-Chang Jung²¹College of Pharmacy, ²Oriental Medicine and ³College of Medicine, and East-West Medical Reserch Institute, Kyung Hee University, Seoul, Korea. Preventive and Antioxidative Effects of Crude Drug Preparation(E-kong-san) on Cisplatin Induced Nephrotoxicity. Proceedings of International Symposium on East-West Medicine, Seoul. 201-211, 1999. -Nephroprotective effects of a crude drug-prearation (E-kong-san) were determined from cisplatin on rabbit kidney proximal tubule and human renal cortical cells by MTT assays and sustained glucose consumption on ciplatin-induced human renal cortical tissue. Levels of creatinine and blood ure nitrogen(BUN) in serum after administration of cisplatin(0.75mg/kg,i.p.) to E-kong-san(0.75g/kg/day,p.o.)-pretreated rats were markedly lower compared to those of cisplatin-treated rats. Moreover, the administration of E-kong-san significantly inhibited the loss of body weight of cisplatin injected rts. These findings suggest that E-kong-san on the cisplatin induced nephrotoxicity led us to investigate whether the effect of this water extract was a result of anti-oxidation. E-kong-san showed strong free radical scavenger activities on 1,1-dipheny1-2picrylhydrazil(DPPH) radical and xanthine/xanthine oxidase(XOD) generated superoxide anion radical(O2-). We further studied the effects of E-kong-san on lipid peroxidation in rat liver microsomes induced by enzymatic and nonenzymatic methods. E-kong-san exhibited significant inhibition on both ascorbic acid/Fe2+and ADP/NADPH/Fe3+ induced lipid peroxidation in rat liver microsomes. Based on these results, we suggest that-E-kong-san attenuate the cisplatin induced cytotoxicity and its mechanism can be eplained by antioxidant.

운하-연안 연계용 바아지의 구조 설계 및 해석

김경수(Kyung-Su Kim),손충렬(Choong-Yul Son),김성준(Sung-Joon Kim) 한국해양공학회 1999 韓國海洋工學會誌 Vol.13 No.2

Two types of barge, container and tanker vessels, are designed with specific dimensions for canal-coastal shipping in Kyung-In canal and Yellow Sea region. The principal dimensions of barges are determined by considering the environment of Kyung-In canal and Yellow Sea. The selection of structure type and strength confirmation is conducted by the technical rules of Korean Register of Shipping.<br/> For the structural analysis of designed barges, the semi-direct structural analysis is carried out with using MSC NASTRAN software. Applying identical dimensions to both vessels, the standardization of structural design and analysis procedure are introduced.

자연휴양림 이용자 요구사항 및 만족

서경석 ( Kyung Seok Seo ),윤성훈 ( Sung Hun Yoon ),김갑열 ( Gab Youl Kim ) 한국감정평가학회 2011 감정평가학논집 Vol.10 No.2

The research was studied about measure how each element affect to recreational forest visitors. And I can provide the useful information for the strategic decision-making to make value-up through characterization and differentiation of recreational forest. Those who use recreational forest were studied. Survey area was divided into five regions; Kyung-gi province, Kang-won province, Chung-chong province, Kyung-sang province and Jeon-ra province. And then national and local governments, individuals were classified as operating principals. Empirical analysis were analyzed by applying the Kano model. The questionnaire was analyzed by statistical methods; for data processing, along with a test of reliability in the measuring tools, frequency analysis. Human services and nature management components of recreational forest were classified as one-dimensional quality. Most users are more concerned about these elements. Recreational forest visitors are more concerned about quality associated with software components rather than hardware components. Recreational forest visitors with high interests and a high level of satisfaction about recreational forest has more concerned about the quality.

『대한신문(大韓新聞)』과 이인직

이상경(Lee, Sang-Kyung) 한국어문학회 2014 語文學 Vol.0 No.126

The present study seeks to elucidate the Daehan Sinmun (Korean Newspaper)’s contents through a source book (hereafter “excerpt collection”) transcribing editorials and some articles published in the daily from July 18, 1907 (first issue) to December 28, 1909 and to analyze the logic of journalists as represented by In-jik Yi (1862-1916). First, upon comparison between articles in the Daehan Maeil Sinbo (Korea Daily News) critical of the Daehan Sinmun and the excerpt collection, it was possible to confirm that the latter served as the original source for the collection of excerpts. Second, “A Song of the Righteous Armies Longing for Home” (Uibyeong Sahyang-ga) in the excerpt collection, a work that had sought to persuade members of the anti-Japanese righteous armies (uibyeong) to surrender, was similar in its logical structure to the speech made by Ong-nam Choe in the latter half of the novel The Silver World (Eunsegye) encouraging members of the righteous armies to capitulate.

‘식민지 조선’의 맥락에서 읽은 인도 시인 사로지니 나이두

이상경(Lee, Sang-Kyung) 한국어문학회 2018 語文學 Vol.0 No.140

The Indian female poet Sarojini Naidu (1879∼1949) was introduced to colonial Joseon in the 1920s as a highly reputed Asian poet in the West along with Tagore, an Indian politician who led the Salt March with Gandhi in 1930. Due to the uniqueness of her association with Tagore and Gandhi—two prominent figures from India—Naidu rarely received much attention as a foreign female poet in colonial Joseon. However, since Naidu was introduced to Joseon after she had stopped writing and was more actively involved in political activities led by Gandhi, some regarded her as a poet, while others viewed her as a politician. This study highlights Naidu and her works, aiming to reveal the context in which emphasis is changed depending on time period, and attempts to build an integrated understanding of Sarojini Naidu. In the early 1920s, Kim Eok focused on poet Naidu, with a focus on her love poems. Then, in the mid 1920s, Naidu’s poetry was introduced as an example of sympathetic linguistic literature for oppressed people. Around 1930, Jeong, In-seop and Lee, Ha-yun regarded Naidu as more of a politician and introduced poems directly expressing the voice of Indian nationalism. The writers and poets of colonial Joseon felt an affinity for Naidu, who came from a colonized country herself, and used her works based on their own areas of interest. In India, Naidu’s literary and political activities are considered outdated. It is often said that her “aesthetics is feudal, although her politics is democratic nationalism.” Recently, it has been proposed that Naidu’s poems require reinterpretation as both a collusion with and resistance to colonialism. Her works are retrogressive in the use of India’s traditional customs and nature as subject matter but, at the same time, stem from a resistance to modern urbanization. Heo Jeong-suk, a socialist feminist who translated Naidu’s poems into the Korean language for readers in colonial Joseon, seemed to have been well aware of their contextual framing, that is, “a collusion with and resistance to colonialism.”

민간공연예술축제 프로그래밍의 새로운 전략적 모색 : 서울변방연극제 사례를 중심으로

이경성(Kyung-sung Lee) 글로벌문화콘텐츠학회 2021 글로벌문화콘텐츠 Vol.- No.46

2000년대 들어 한국에 수많은 공연예술축제가 생겨나면서 축제마다 정체성 구축과 독자적 프로그래밍의 방향설정이 더욱 중요하게 되었다. 특히 민간공연예술축제는 많은 예산과 인력이 필요한 공연예술축제의 특성상 그 독립성과 프로그램의 다양성을 유지해가기 위해 관(官) 주관의 축제와는 다른 방식의 전략적 모색이 요청되었다. 1999년 ‘젊은 연출가들의 속셈 전’이라는 주제 아래에 시작된 서울변방연극제는 장르 간 경계를 허무는 공연들을 선보이는 실험의 장으로서 기능해 왔으며 2대 임인자 감독 역시 문화계에 자행되었던 블랙리스트 사태 이후 민간독립예술축제의 독립성과 독창성을 유지하기 위해 정부지원금을 거부하고 모금으로 연극제를 개최하는 등의 행보를 이어갔다. 2015년 3대 예술감독으로 부임한 이경성은 서울변방연극제의 정체성을 이어가면서도 연극제의 도약을 위해 한국 민간공연예술축제로서는 처음으로 인터위빙을 바탕으로 한 국제공동 큐레이팅 방식을 도입, 연극제를 공연 토크, 워크로 개편하였다. 이렇게 20년간 여러 형식적 변모를 통해 지속할 수 있었던 서울변방연극제의 사례를 바탕으로 민간공연예술축제가 참조할 수 있는 새로운 프로그래밍 전략들을 모색해 볼 수 있을 것이다. 예술감독 중심체제를 벗어난 다자간 공동 큐레이팅, 시대적 흐름 속에서 축제의 자기 정체성 강화, 팬데믹 시대에 이동성보다 연결성을 강조한 국제공동협업의 프로그래밍이 그러한 제안이 될 수 있겠다. 앞으로 민간공연예술축제는 어려운 재정적 요건과 공연예술의 위기라고 일컬어지는 작금의 코로나 상황 속에서 프로그래밍의 새로운 전략적 모색을 통해 대안적 공연예술 플랫폼의 역할과 기능을 더욱 강화해 나가야 할 것이다. As numerous performing arts festivals have been established in Korea after 2000, it is getting more important to establish identity and direction of unique programming for each festival. In particular, due to the nature of the performing arts festival, which requires a lot of budget and human resource, a new strategic search is needed to maintain its independence and program diversity. Launched in 1999 under the theme of Young Director‘s New Vision , the Seoul Marginal Theatre Festival has played the role of experimental platform for performances that break down the boundaries between genres. In order to maintain the independence and originality of the festival, former artistic director of Seoul Marginal Theatre Festival, Im, In-Za refused government subsidies and held a festival by public fund-raising in 2015. Lee Kyung-Sung, who was appointed as the 3rd artistic director, adopted the international collaborative curating system for the leap of the festival in 2019 and re-structured the festival program into Performance, Work, Talk. From the case of the Seoul Marginal Theatre Festival, which has been continued through various formal transformations for 20 years, it is possible to explore new programming strategies that can be also bench-marked by other independent performing arts festival. Multilateral co-curating overcoming the artistic director-centered system attempt at the 19th Seoul Marginal Theatre Festival, reinforcement of the festival s self-identity in the trend of the times, and international collaboration programming emphasizing new connectivity in the Pendemic era could be such proposals. In the future, the independent performing arts festival should strengthen its role and function as an alternative performing arts platform by seeking a new strategic approach for programming amid difficult financial conditions and the current corona virus situation regarded as the crisis of performing arts.

The effect of neuropeptides on secretion of Interleukin-8(IL-8)

Kim, Kyung-Jun,Park, Sang-Hyuk,Choi, Kyoung-Kyu,Park, Sang-Jin 大韓齒科保存學會 2006 Restorative Dentistry & Endodontics Vol.31 No.3

본 연구는 치수조직, 치은, 치주인대로부터 배양된 조직을 SP (Substance P)로 4시간, SP, CGRP (Calcitonin Gene-related Peptide), Tumor necrosis factor-α (TNF-α)로 8시간 자극 후 RNase Protection Assay를 시행하고, IL-8의 분비량을 측정해 다음 결과를 얻었다. 1. IL-8 mRNA는 모든세포에서 발현됐다. 2. IL-8 mRNA 발현은 SP (10^(-5)M)와 SP (10^(-8)M)로 4시간 자극 시 증가되지 않았다. 3. IL-8 mRNA 발현은 SP (10^(-4)M)와 CGRP (10^(-6)M)로 8시간 자극 시 증가되지 않았다. 4. TNF-α (2 ng/㎖) 자극 시, IL-8 mRNA 발현이 증가됐다. 5. 치은 세포를 CGRP (10^(-6)M)로 8시간 자극 시, IL-8 분비량이 증가했다 (p < 0.05). 6. 치주인대 세포를 SP (10^(-4)M)로 8시간 자극 시 IL-8 분비량이 증가했다 (p < 0.05). We investigated the secretion of Interleukin-8 (IL-8) from ginviva and periodontal ligament stimulated with Substance P (SP) and Calcitonin Gene-related Peptide (CGRP). Gingiva (GF), periodontal ligament (PDLF) and pulp (PF) tissues were collected from extracted instact 3rd molars. Cultured cells were stimulated with different concentrations of SP for 4 hrs, and stimulated with SP, CGRP and Tumor Necrosis Factor-α (TNF-α) for 8 hrs. Then RNase Protection Assay was carried out. ELISA was performed using supernatants of stimulated cells for quantitative analysis of IL-8. Results were assessed using supernatants of stimulated cells for quantitative analysis of IL-8. Results were assessed using student t-test with significance of P < 0.05. According to this study, the results were as follows: 1. IL-8 mRNA was detected in all type of cells studied (PF, GF and PDLF). 2. IL-8 mRNA expression was not increased after stimulating 4 hrs with SP (10^(-5)M) and SP (10^(-8)M) compared with Mock stimulation in all type of cells studied. 3. IL-8 mRNA expression was not increased after stimulating 8 hrs with SP (10^(-4)M) and CGRP (10^(-6)M) compared with Mock stimulation in all type of cells studied. 4. TNF-α (2 ng/㎖) increased the expression of IL-8 mRNA in all kind of cells studied. 5. The secretion of IL-8 from GF was increased 8 hrs after the stimulation with CGRP (10^(-6)M) (p < 0.05). 6. The secretion of IL-8 from PDLF was increased 8 hrs after the stimulation with SP (10^(-4)M) (p < 0.05). Calcitonin Gene-related Peptide (CGRP) increased Interleukin-8 (IL-8) which plays an important role in chemotaxis of neutrophil in Calcitonin Gene-related Peptide (CGRP) gingival tissue, whereas Substance P increased the secretion of IL-8 from periodontal ligament.

DEA를 이용한 여성복지서비스의 효율성 평가: 여성인력개발센터를 중심으로

성도경 ( Do Kyung Sung ),최인규 ( In Kyu Choi ) 대한정치학회 2009 大韓政治學會報 Vol.16 No.3

오늘날 여성경제활동에 대한 사회 정책적 관심이 증가하면서, 여성의 노동권 보장을 위한 다양한 복지정책지원에 주목하기 시작하였다. 이 시점에서 여성인력개발센터는 그간 여성의 능력개발 및 여성복지서비스에 대한 시대적 변화에 적극 대처함으로써 여성의 경제활동과 참여 증대에 기여해 온 점은 부인할 수 없는 사실이다. 그러나 최근 센터별 운영적인 측면과 서비스에 대한 효율적인 측면에서 여러 가지 문제점이 나타나고 있는 실정이다. 이러한 측면에서 본 연구는 DEA(Data Envelopment Analysis), FDH(Free Disposal Hull), 기법을 이용하여 각 여성인력개발센터의 효율성을 실증적으로 비교·분석하였다. 본 연구의 분석지표로는 투입변수에 프로그램 개설수, 직원 수, 정부지원보조금율, 산출변수에 수료자 수, 취업자 수, 상담실적을 사용하였다. 분석결과 CCR모형의 효율성평가에서는 강북, 광진, 구로, 동대문, 인천, 울산, 성남, 강릉, 천안 등 9곳이 효율적인 센터로 나타났다. BCC분석에서는 21개 센터가 효율적인 센터로 나타났다. 또한 슬랙(slacks)값이 20%이상이 되는 각 기관들의 투입변수와 산출변수의 변화를 통해 효율성을 증가시킬 수 있는 방향을 살펴보았는데, 여성복지서비스의 개선을 위한 여성인력개발센터의 효율적 운영을 위해서는 교육프로그램의 질적 내실화, 인력의 충분성과 전문성 확보, 지방자치단체의 지원금의 재조정이 필요한 것으로 나타났다. As the increase of politic concern over the economic activity of women, it began to attract the need of various welfare policies to secure the woman`s labor right. In this respect, Woman Resources Development Center has contributed to the increase of women`s economic activities and participation. But, it shows a lot problems in the respect of operations and services. Therefore, this study empirically analyzed the efficacy of countrywide Woman Resources Development Centers using DEA(Data Envelopment Analysis) and FDH(Free Disposal Hull) methods. The number of programs, the number of employees, and subsidy from government were used as input variables, and the number completed the program, the number of employed worker, and results of consultation were used as output variables. The evaluation of efficacy by CCR model showed nine centers, such as Kang-book, Kwang-jin, Koo-ro, Dong-daemoon, Incheon, Ulsan, Sung-nam, Kang- reung, and Chun-an were efficient. The evaluation of efficacy by BCC model showed 21 centers were efficient. This study proposed that it needs qualitative improvement of education programs, secure of sufficiency and professionalization of woman power, resettlement of subsidy from local governments to improve the operation of Woman Resources Development Center.

자궁경부암에서 혈관 내피 성장인자 ( VEGF ) 및 VEGF Mrna 의 발현에 대한 연구

이선경(Seon Kyung Lee),김승보(Seung Bo Kim),지성길(Sung Gil Chi),염윤석(Yoon Seok Yum),이주희(Ju Hee Lee) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.1

N/A Objective : Angiogenesis, the formation of blood vessels by sprouting from pre-existing ones, is essential for the growth of solid tumors beyond 2~3mm in diameter and for tumor metastasis. Vascular endothelial growth factor (VEGF), is known as vascular permeability factor(VPF) and mediates vascularization and tumor-induced angiogenesis. This study examined the potential of growth, invasion, and metastasis of uterine cervical carcinomas associated with neovascularization. Methods : From January 1996 to December 1999, at the Department of Obstetrics and Gynecology, Kyung-Hee University Hospital, 37 uterine cervical carcinomas and 7 normal cervical tissues were obtained and the samples were immediately frozen and stored at -70℃. Immunohistochemical staining for VEGF was carried out to study VEGF localization, and the levels of VEGF subtype mRNAs were determined by quantitative RT-PCR in specimens. The relation between VEGF subtypes expression of cervical cancers was analysed. Results : The positive staining for VEGF is seen dominantly in the cytoplasm of the cancer cells, and faintly in interstitial cells. The intensity of staining was stronger in squamous carcinomas than in adenocrcinomas, but there was no significant difference (p>0.05). Quantitative RT-PCR analysis demonstrated significantly increased VEGF121/VEGF165 mRNA expression levels (>0.56/>0.72) in 21 (56.8%) and 15 (40.5%) of 37 cervical carcinomas comparing to control groups (mean: 0.28/0.36). There was no obvious relationship between VEGF121/VEGF165 mRNA expression levels and the clinical parameters examined including age, pathology, differentiation, tumor size, lymphovascular space invasion, LN involvement and invasion depth except clinical stage (p<0.05). Conclusions : The overexpression of VEGF mRNA may be an important contributing factor in cervical carcinomas. There is no significant differenece of VEGF mRNAs levels according to clinical parameters, so it seems that the expression of VEGF is involved in the promotion of angiogenesis on cervical cancer and plays an important role in early invasion.