• 제목/요약/키워드: anti-modern

검색결과 251건 처리시간 0.029초

Voltage Sag 보상을 위한 Anti-Wind up을 이용한 PI제어 알고리즘 (Anti-Windup PI Control Algorithm for Voltage Sag Compensation)

  • 이교성;최현영;이용제;김양모
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2002년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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    • pp.116-118
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    • 2002
  • Of all known power quality problems, voltage sags provide the largest reason for concern. Sags occurs more frequently than outages and therefore tend to be more costly for industry as modern technical equipment becomes all the more sensitive to the quality and reliability of supply. Therefore we designed for a new model for Voltage Sag compensator, and we will implement Anti-Windup PI Controller with IP Block.

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퍼지 모델 기반 제어기를 이용한 안티 스키드 시스템의 설계 (Design an Anti-Skid System using Fuzzy Model-Based Controller)

  • 이성호;김영국;김석원;박진배
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2006년도 추계학술대회 논문집
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    • pp.1276-1281
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    • 2006
  • In general, the wheel-skid prevention of braking system is very important in modern railway applications. This is because wheel-skid can lead to an increase in noise and vibration from wheels with flat points, as well as an increased braking distance. However conventional anti-skid control has problems because wheel adhension and skid characteristics are very difficult nonlinear systems and time consuming to accurately model. In this paper, we design a fuzzy controller using a model of relation between ahdension and braking force, we show that anti-skid fuzzy controller has a very good performance, performing better than the previous conventional controller.

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The Screening of Fermented Medicinal Herbs to Identify Those with Anti-inflammatory Properties

  • Shen, Feng-Yan;Ra, Je-Hveon;Kim, Jin-Ju;Jung, Sung-Ki
    • 대한한방내과학회지
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    • 제30권1호
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    • pp.64-73
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    • 2009
  • Objectives : Consumption of fermented foods has been known to alleviate some of the symptoms of atopy and may limit allergy development, while there are also many medicinal herbs proved to be effective for immunologically-mediated diseases. In this study, we introduced modern zymology to ferment some herbs to see if fermentation has the possibility of increasing the anti-inflammatory effects of medicinal herbs. Interleukin-4 (IL-4) and interferon-gamma $(INF-\gamma)$ have been demonstrated to be the main factors in the pathology of allergic diseases. Methods : We measured the levels of IL-4 and $INF-\gamma$ on concanavalin A-induced BALB/c mice spleen cells, which were subsequently treated with fermented and unfermented herbs. We then compared the fermented groups with unfermented groups to see if the anti-inflammatory effects of the herbs were influenced by fermentation. Results and Conclusions : Our results showed that fermentation had the potential to increase the anti-inflammatory effects of some medicinal herbs, and Astragalus membranaceus and Salvia miltiorrhiza would be the most suitable medicinal herbs for fermentation among the herbs in this study.

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'칙어'와 '소칙'과 '반전 센류' (Imperial Rescript (Chokugo), Imperial Rescript (Shousho) and an Anti-war Senryu)

  • 구루미사와 겐
    • 비교문화연구
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    • 제51권
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    • pp.25-44
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    • 2018
  • 일본 근대의 '반전시'의 기원은 청일전쟁과 러일전쟁으로 거슬러 올라간다. 청일전쟁은 천황의 '선전소칙' 포고로 개시된 첫 전쟁이다. 전쟁은 천황의 명령이며, 국민에 대한 '말씀'이다. '반대'하는 것은 허락되지 않았다. '소칙'에 따른 '전쟁'은 '성전'이고 정당성이 부여된다. 그 때문에 '반전(反戰)'은 천황의 명령과 '말씀'에 거역하는 사상, 표현으로 간주된다. 따라서 '반전시'로 잘 알려진 요사노 아키코의 "그대여 죽지 말지어다"(1904)는 발표 당시부터 "국가의 이름으로 처벌하라"라는 맹렬한 비판을 받게 된다. '반전시'는 언론탄압의 역사이기도 하다. 그 중에서도 단시형 문학에 대한 탄압은 그 정도가 매우 극심하였다. 마이너 장르인 탓에 지금까지 간과되어 왔지만 다시금 '반전시' 계보로 자리매김하고 재평가할 필요가 있다. 특히 러일전쟁에 탄생한 근대 센류(신센류)는, 풍자와 반어법을 구사하며 정치와 사회 전반을 비판했다는 이유로 국가로부터 집요한 감시와 탄압을 받았다. '교육칙어'를 풍자한 쓰루 아키라의 '반전 센류'는 그 최전선에 자리한다. 본 논문에서는 바로 이 풍자와 반어법에 주목하여 '소칙'과 '칙어'를 반전(反轉)시키는 '반전(反戰) 센류'를 고찰한 것이다.

동양 전통 생태사상의 현대적 전환을위한 비판적 고찰 - 유학의 생태사상을 중심으로 - (Critical Review on Modern Change of Ecological Thought in Oriental Tradition)

  • 한성구;지준호
    • 한국철학논집
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    • 제36호
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    • pp.235-258
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    • 2013
  • 기존의 생태철학에서, 환경 위기의 원인이 인간과 자연의 분리에 있으므로, 위기를 극복하기 위해선 인간과 자연의 친화가 필요하다고 한다. 우리는 동양사상이야말로 그런 합일성의 전형이라고 주장해 왔다. 실제로 동양의 전통문화 중에는 생태적 의의를 갖고 있는 사상적 내용이 적지 않게 들어있다. 그러나 현대 사회에서 그것이 얼마만큼의 활력과 의미를 갖고 있는지는 말하기 쉽지 않다. 다른 한 편으로 우리가 환경파괴의 주범이라고 생각하고 있는 서양의 사상이 생각만큼 반생태적인 내용을 담고 있지 않을 수도 있다. 따라서 우리는 좀 더 근본적인 곳에서부터 문제를 제기하고 답을 찾아 나가기 위해 "서양의 자연관은 반생태적인가?"라는 물음과 "동양의 자연관은 생태적인가?"라는 물음을 던지고 이에 대해 다시 검토해 볼 필요성이 있다. 특히 전자의 물음에 대해서는 적지 않은 연구가 있었기 때문에 후자의 물음에 대해 주목할 필요가 있으며 그에 대한 해답을 제시할 수 있다면 동양 생태 사상의 현대적 전환과 실천적 의의를 찾을 수 있는 단초를 제공하게 될 것이라 생각한다. 생태문제는 이론의 문제라기보다는 실천의 문제이다. 어떻게 실천을 가능하게 할 것인가의 문제이다. 개인과 국가, 기업 모두 어떻게 사는 것이 궁극적으로 가치 있는 삶인지 자각하지 못한다면 생태문제의 해결은 요원하다. 한 사람만의 자각으로는 해결이 불가능하며 생태문화의 사회적 조성과 교육이 동반되어야 한다. 이 과정에서 전통적인 환경 이해 방식과 사상을 비판적으로 고찰하고 객관적으로 바라봐야 할 필요성이 생기는 것이다. 동양 전통 문화가 담고 있는 풍부한 생태 사상적 요소의 보편적 가치는 그것이 현대적으로 전환될 수 있는 가능성을 실현시켜 줄 수 있는 기초가 된다. 그러나 보편적 가치만으로 그것이 현대적 이론으로 전환되어 실천과 연결될 수 있는지는 별도의 문제이다. 앞에서 언급했던 것처럼 생태 사상은 이론 문제이기 이전에 실천문제이다. 아무리 훌륭하고 잘 갖추어진 이론이라 할지라도 실천과 연결될 수 있는 현실적 길을 찾지 못한다면 그것은 아무 쓸모가 없는 것이다. 그러나 동양 전통 생태사상이 현대적으로 전환될 수 있는 가능성은 얼마든지 있다. 앞에서도 말했듯이 생태사상의 문제는 이론뿐만 아니라 실천이 병행되어야 하는 것이며, 과거의 문제가 아니라 현재의 문제이기 때문에 미리 답안을 정해놓고 문제를 검토하는 것이 아닌 오늘날의 입장에서 끊임없이 새로운 문제를 제시하고 답안을 찾으려 할 때 동양 생태사상의 현대적 전환은 어느 정도 가능성을 보게 될 것이다.

침향(沈香)의 국내외 연구동향과 본초학에 대한 문헌고찰 (Agarwood's Domestic and International Research Trends and Literature Review of Herbal Medicine)

  • 정광호;조우진
    • 대한본초학회지
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    • 제38권6호
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    • pp.1-27
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    • 2023
  • Objectives : To investigate the modern research achievements of agarwood and its association with the efficacy of herbal medicine based on the in vivo and in vitro activities of volatile compounds detected in agarwood. Methods : Databases such as PubMed and ScienceOn were searched for medicinal in vivo and in vitro activity studies on agarwood. They were categorized into "medicine and pharmacy" and "others not related to medicine and pharmacy," and the studies on medicine and pharmacy were organized according to active efficacy. The efficacy and virtue of agarwood as identified in the book (or herbal medicine/herbology) corresponded to modern medical terms and diseases in reference to the . Separately, the Gas Chromatography & Mass spectrometer (GC-MS) analysis results of agarwood from a total of 5 production areas of Aquilaria crassna from Vietnam, Indonesia, Malaysia, Myanmar, and Cambodia as identified in previous studies were consulted to search for research papers on the medicinal activity of the 13 compounds of the aromatic sesquiterpene family detected in agarwood, and they were categorized according to topic. Results : There were 123 studies on the medicinal activity of agarwood. Overall, 46 studies on single extracts of agarwood reported activities such as improving mental health, including anti-anxiety and stability, and antiallergic, antioxidant, antibacterial, and digestive system protective effects. In total, 59 papers on the activities of single compounds isolated from agarwood reported anti-inflammatory and mental health benefits. Separately, 13 compounds detected in agarwood, such as α-agarofuran and β-caryophyllene, were reported by 110 studies to have anticancer, stabilizing, antibacterial, and anti-inflammatory activities. There were also papers on the cultivation methods and resin formation conditions of agarwood trees unrelated to the efficacy of herbal medicine. Conclusion : Among the pharmacological papers, a total of 57 papers corresponded to the effects of agarwood in traditional herbal medicine, including 33 papers related to agarwood extracts and 24 papers analyzing 8 types of sesquiterpenes, such as β-caryophyllene and cedrol, from previous studies. Based on the research findings of each paper, it was possible to correlate the effects of agarwood in traditional herbal medicine with the achievements of modern pharmacological research. In addition, further research is anticipated in new areas related to traditional herbal medicine, including the improvement of mental health such as anti-depression, as well as activities related to anticancer, antioxidant, and hair growth.

한형모 감독의 영화 <자유부인>에 나타난 복식에 관한 연구 (A Study on the customs in Han Hyungmo's film )

  • 김혜정
    • 패션비즈니스
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    • 제17권1호
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    • pp.98-113
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    • 2013
  • This study is an attempt to analyze the daily life of the Western-yearning Seoul citizens and the inflow of the Western culture into certain social classes. The customs of the characters in the film are studied to illustrate the process of deconstruction of Korean traditional clothes due to the Western influence. The combined application of the Western and Korean styles is also observed. All this study leads to the sense of homogeneity of the times and the conformity to the culture the Korean women shared, which boils down to the social identity of the Korean women who sought an escape from the men-centered social structure by displaying their competence in the field of global modern fashion. As Seonyeong Oh, the main character of the film, , was wearing in the movie the Korean traditional dress, socks, rubber shoes, and then a western-style coat, it well shows that in 1950's, the traditional dress and ornaments were mixed with Western styles. In time, men's wear were completely changed from the traditional Korean clothes to suits, while women's could not break off from the traditional clothes and become westernized, which indicates that the men-centered conservative ideas to keep women within the feudal regime of the society remained. The military look of Seonyeong Oh while she was acting in the society was a symbol of anti-bias against women and anti-convention as well as the will of freedom as an independent woman. Besides, the modern girls would wear clothes of military fashion, Dior's trapeze line, and knit styles flattering the figures. All these well show their desires to embrace Western cultures, especially their dress fashions as well as manners as so-called enlightened ladies. All these elements show that the director was trying to represent the progress of the drama, characters, and psychological states by means of the dress and ornaments.

Pharmacological activities of Glehnia littoralis

  • Yoon, Tae-Sook;Choo, Byung-Kil;Cheon, Myeoung-Sook;Lee, Do-Yeon;Choi, Go-Ya;Chae, Sung-Wook;Lee, A-Yeong;Kim, Ho-Kyoung
    • 한국한의학연구원논문집
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    • 제14권1호
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    • pp.123-128
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    • 2008
  • Glehnia littoralis (Umbelliferae), a perennial herb distributed along the coastline of northern Pacific countries, is the medicinal plant used traditionally for treatment of various diseases. This review focuses on the various pharmacological activities of Glehnia littoralis for understanding about its traditional medicinal applications, medicinal uses in the modern society, and potentials for drug development Glehnia littoralis was reported to have anti-oxidant, anti-tumor, anti-amnesic, blood circulation-promoting, immunomodulatory, anti-microbial, and allelopathic activities. However, their mechanisms remain to be clarified. Because Glehnia littoralis has been prescribed in traditional Oriental medicine as a tonic herb, Glehnia littoralis can be better than other chemical drugs and medicines which exert the equal pharmacological activities. Although the activities of Glehnia littoralis are not specifically high-potent with unique mode of action, it may turn out that it can be beneficial to exert multiple pharmacological activities. In view of low toxicity, relative cheapness, presence in the diet, and occurrence in various herbal remedies of Glehnia littoralis, it needs to be prudent to evaluate its properties and applications further.

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항암제독탕가제조와 항암양제방에 대한 비교연구 (Comparison Study of the Anti-tumor Effects of Hangamjedoktang(Kangaizhidu-tang) with Holotrkhia and Hangamyagjaebang(Kangaiyaocai-fang))

  • 오중환;박종형;한양희;김동우;전찬용;백은기;홍의실;한지완;임영남
    • 대한한의학회지
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    • 제24권3호
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    • pp.138-144
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    • 2003
  • Objective : Though modern medicine has made various studies in cancer treatment, the results of the treatments are not satisfactory. Considering this, Oriental medicine can be a breakthrough in treatment of cancer, and therefore, its constant research eagerly needed. According to preceding studies, Hangamjedoktang (Kangaizhidu-tang) with Hagocho appeared to be statistically significant against cancer, and therefore to seek a better medication for cancer, Holotrichia which seemed to be effective against cancer was added to the formula, and herbs which showed an anti-tumor effect in preceding studies composed Hangamyagjaebang. The efficacy of both Hangamjedoktang with Holotrichia (HJJ) and Hangamyagjaebang (Kangaiyaocaijang) (HM) was compared. Methods : To examine the anti-cancer effect of HJJ and HM, inhibitory effect on solid tumor growth in mice induced by Sarcoma-180 (s-180), change of body and organ weight in tumor bearing mice and the activity of machrophages and lymphocytes in the spleen were examined. Results : 1. In the HJJ and HM treated groups, tumor growth was markedly decreased. 2. HJJ and HM increased the activity of ALP which is produced from the splenocytes transplanted with S-180. 3. HJJ and HM increased the ACP activity of the macrophages of the mice transplanted with S-180. Conclusion : These results suggest that HJJ and HM are good candidates for new drugs for cancer therapy.

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Constituents and Effects of Ginseng Leaf

  • Xie, Jing-Tian;Wu, Ji-An;Lin, Elaine;Wang, Chong-Zhi;Yuan, Chun-Su
    • Advances in Traditional Medicine
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    • 제4권1호
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    • pp.1-8
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    • 2004
  • Ginseng root has been used as a tonic remedy in Traditional Chinese Medicine for centuries. Modern studies have demonstrated that ginseng root has complex components and multiple pharmacological properties. The effects of ginseng leaf, however, are not well known. Recent studies show that compared to ginseng root, ginseng leaf and stem exhibit a higher content of active compositions such as ginsenosides, polysaccharides, triterpene flavonoids, volatile oil, polyacetylenic alcohols, peptides, amino acids and fatty acids. Ginseng leaf possesses multiple pharmacological effects in the central nervous, cardiovascular, growth and metabolism systems. Additionally, the leaf has anti-fatigue, anti-hyperglycemic, anti-oxidant, and anti-aged effects. In general, ginseng leaf is quite safe, but adverse effects may occur if it is abused or is of poor quality. Thus, attention must be paid to dosages, quality, and standardization of ginseng leaf products.