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EMTP를 이용한 디젤발전시스템 Harmonic Torque의 계통영향 평가 (Assessment of the Influence on Harmonic Torque in Diesel Generating System by using EMTP)

  • 김수남;정문구;백병산;김익모
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2003년도 추계학술대회 논문집 전력기술부문
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    • pp.125-127
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    • 2003
  • This paper presents method of the assessment on the Influence of harmonic torque in diesel generating system by using EMTP(Electromagnetic Transient Program). The objectives is to analysis the influence on power oscillation and voltage fluctuation due to the periodically varying torque developed by the new diesel generator to be installed in existing power system.

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월성원전 GCB 개폐서지 측정 및 대책 (The Measurement and Countermeasures of GCB switching surge in Wolsong Nuclear Power Site)

  • 김익모;김수남;정승완;백병산;김원선;박진엽
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2007년도 제38회 하계학술대회
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    • pp.766-767
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    • 2007
  • 현재 국내 원자력 발전소내의 노후화된 GCB 차단기를 VCB로 교체할 경우, 관련한 기술적 규정들이 확립되지 않아, 이에 대한 기술적 평가가 요구되었다. 본 연구에서는 원자력 발전소 주요 전동기의 기동 및 차단시에 발생하는 개폐서지를 측정하여 발생된 서지의 크기를 분석하고 EMTP 시뮬레이션 방법을 통하여 교체 시 기술 기준을 제안하고 적정성을 검증하였다.

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2015 개정 중학교 정보 교과의 "피지컬 컴퓨팅" 영역의 내용요소 설계 (Designing Content Elements of "Physical Computing" Section in 2015 Revised Middle School Informatics Curriculum)

  • 김미혜;길준민;정진욱
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2015년도 추계학술발표대회
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    • pp.127-130
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    • 2015
  • 본 연구에서는 2015년 개정 정보 교육과정 시안의 중학교 정보 교과에서 제시한 내용체계의 4개 영역(정보 문화, 자료와 정보, 문제해결과 프로그래밍, 컴퓨팅 시스템) 중 "컴퓨팅 시스템"의 "피지컬 컴퓨팅" 영역에 대한 내용요소 구성을 설계하여 제시하고자 한다. 본 연구결과가 향후 피지컬 컴퓨팅 교육 내용요소를 설계하는데 가이드라인을 제시할 수 있을 것으로 기대한다.

Stoichiometric Solvation Effects. Solvolysis of Methanesulfonyl Chloride

  • 구인선;양기열;안선경;이종광;이익춘
    • Bulletin of the Korean Chemical Society
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    • 제21권10호
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    • pp.955-956
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    • 2000
  • Solvolyses of methanesulfonyl chloride in water, $D^2O$, $CH^3OD$, and in aqueous binary mixtures of acetone, eth-anol and methanol are investigated at 25, 35 and $45^{\circ}C.$ The Grunwald-Winstein plot of first-order rate con-stants for the solvolytic react ion of methanesulfonyl chloride with YCl (based on 2-adamantyl chloride) shows marked dispersions into three separate lines for three aqueous mixtures with a small m value (m < 0.30), and shows a rate maximum for aqueous alcoholic solvents. Stoichiometric third-order rate constants, kww and kaa were calculated from the observed first-order rate constants and (kaw + kwa) was calculated from the kww and kaa values. The kinetic solvent isotope effects determined in water and methanol are consistent with the proposed mechanism of the general base catalyzed and/or SAN/SN2 reaction mechanism for methanesulfonyl chloride solvolyses based on mass law and stoichiometric solvation effect studies.

Patterns of Resistographs for Evaluating Deteriorated Structural Wood Members

  • ;;박문성
    • Journal of the Korean Wood Science and Technology
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    • 제31권6호
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    • pp.45-54
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    • 2003
  • The density and strength of wood is affected by degradations and defects, such as voids and knots. Old wooden structures such as traditional cultural properties have been deteriorated by these types of defects. They were evaluated by a visual observation that is difficult to evaluate the inner deterioration in structures. In this study, three nondestructive testing techniques were investigated to detect the wooden structural members. Ultrasonic stress wave tests, drilling resistance tests and visual inspections were used to examine the structural wood members. Patterns of Resistograph using by drilling resistance tests could indicate the features of internal wood such as voids, knots, decay, fungi, and so on. The technique just like as ultrasonic stress wave tests, however, difficult to detect exactly area where small amounts of internal deterioration in logs are. In spite of results of ultrasonic stress wave test, the internal deterioration of wooden structural members could be evaluated by the relationship between ultrasonic stress wave tests and drilling resistance tests.

구창의 문헌연구 (A literal study on the Gu-Chang)

  • 정한솔;박종훈;육상원;이광규
    • 동의생리병리학회지
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    • 제16권1호
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    • pp.32-44
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    • 2002
  • Gu-Chang is a disorder characterized by recurring ulcers confined to the oral mucosa. Despite much clinical and research attention, the causes remain poorly understood. In this paper, we will compare Gu-Chang with Recurrent Aphthous Stomatitis(RAS) in order to know what is the similiarity between Gu-Chang and RAS. So we will arrange various oriental and western medical literatures which are important. As a result of arrangement of the causes, symptoms and therapys of Gu-Chang, we can conclude through the studies as follows. 1. The etiologies of Gu-chang are following. In the Sthenia syndrome, there are evil heat of external factor, heat of heart and spleen, insomnia, heat of upper warmer, stress and diet, heat of lung and heart, excessive heat of upper warmer, inappropriate food intake, heat conveyance of organ, heat of stomach merdian, moistured heat of spleen and stomach and stasis of liver energy. In the Asthenia syndrome, there are deficiency of stomach energy, deficiency of upper warmer leading to heat, deficiency of middle warmer leading to cold, deficiency of lower warmer leading to heat, deficiency of middle energy, deficiency of blood, decreased fire and deficiency of soil, yin fire of lower warmer, deficiency of heart yin, deficiency of spleen yin and deficiency of qi and blood. 2. In western medicine the causes of RAS is presumed as local, microbial, systemic, nutritional, genetic, immunologic factors. 3. Once Gu-chang is compared with RAS, in the deficiency of yin leading to hyperactivity of fire, deficiency of yin leading to floating of fire and stasis of liver energy, recurring of Gu-chang is similar to RAS. Although recurring of Gu-chang due to tripple warmer of excessive fire has no recurrance, since there are the degree of Pain, site of lesion, dysphagia etc, it is similar to major RAS. It is may be believed that Sthenia Gu-chang is similar to major RAS, shape of recurring, site of lesion, degrree of Pain and white color of Asthenia Gu-chang are similar to minor RAS, but there is no similarity concerning herpes RAS in the literatures that describe the symptoms. 4. Generally, the treatment of Gu-chang is divided into Asthenia and Sthenia Syndrome. The method of cure to Sthenia syndrome is heat cleaning and purge fire, Asthenia syndrome is nourish yin to lower and adverse rising energy and strength the middle warmer and benefit vital energy. 5. Following is the medication for Sthenia syndrome. Heat of heart and spleen is Do Jok San, Yang Gyek San, Juk Yup Suk Go Tang, evil heat of external factor is Yang Gyek San Ga Gam, Stasis of liver energy is Chong Wi Fae Dok Yum, moistured heat of spleen and stomach is Chong Gi Sam Syep Tang. The medication for Asthenia Syndrome is following. Deficiency of upper warmer leading to heat is Bo Jung Ik Gi Tang, deficiency of middle warmer leading to cold is Bu Ja Lee Jung Tang, deficiency of lower warmer leading to heat is Yuk Mi Ji Hwang Tang, deficiency of yin leading to hyperactivity of fire is Ji Baek Ji Hwang Hwan, deficiency of yin leading to floating of fire is Lee Jung Tang Ga Bu Ja Medicine for external use were Yang Suk San, Boo Wyen San, Rok Po San, Yoo Hwa San ate. 6. In western medicine, there is no specific treatment for RAS, and management strategies depend on dinical presentation and symptoms and includes antibiotics, oral rinses, glucocorticoids, immunomodulatory drugs, vitamines, analgesics, laser and antiviral agents.

폐기종(肺氣腫)의 한의학적(韓醫學的) 병인(病因) 병리(病理) 및 치료(治療)에 관(關)한 문헌적(文獻的) 고찰(考察) (The literatual study on Pulmonary emphysema)

  • 서운교;정지천
    • 대한한방내과학회지
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    • 제16권1호
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    • pp.81-103
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    • 1995
  • Study on Pulmonary emphysema based on literature and thesis, etc. Knowing the cause of the oriental medicine and treatment. The results were obtained as follows: 1. In the oriental medicine, we could find that emphysema was similiar to Pye-Chang, Huh-Chun. Sang-Qi, Dan-Qi, So-Qi. 2. The cause was divided to asthenia of the lung and kidney, yang-asthenia of the spleen and kidney with energy-asthenia of the lung as the root, and sputum(痰) had been important in the early period of disease, extravasated blood in the latter period. The proximate cause was clonic pulmonary disease, smoking, air pollution. occupation and symptoms of senility, congenital cause etc. 3.The treatment was divided to Gang-Qi-Wha-Dam, Whal-Hyul-Wha-Eo, Jin-Hae-Pyung-Chun in progress of disease and it was divided to Geon-Bi, Nab-Qi, On-Yang, Yang(養)-Eum, Qi-Eum-Ssang-Bo in relieve period. 4.The medicine used to Bu-Bi-Seng-Maek-San, Jo- Jung-Ik-Qi-Tang, Jung-Won-Eum, Geum-Guae-Sin-Qi-Whan, Jin-Mu-Tang, Yuk-Mi-Whan and So-ja-Gang-Qi-Tang, Pae-Mo-Tang, Ja-Won-Tang, Do-Dam-Tang, Chun-min-Tang, Jeon-Ho-Tang etc. The popular used medicine used to Bo-Pae-Tang, Pyung-Chun-Go-Bon-Tang, In-Sam-Hap-Gae-San-Ga-Gam, In-Sam-Yun-Pae-Won, Jung-Chun-Tang, Bo-Shin-Lee-Pae-Tang etc. Exogenous pathogenic fact and increasing of symptom used to Sam-So-Eum, Sang-Gook-Eum, Wol-Bi-Ga-Ban-Ha-Tang, Sa-Baek-Tang, Ma-Hwang-Tang etc.

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구봉 송익필의 경세사상 (Gubong Song IK- Pil's Thought of Statecraft(經世思想))

  • 이영자
    • 한국철학논집
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    • 제59호
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    • pp.313-342
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    • 2018
  • 구봉 송익필은 신분의 제약으로 직접 경륜할 수 없었다. 그럼에도 지치주의(至治主義)를 목표로 '처변위권(處變爲權)'을 발휘하여 지우나 후생을 통한 간접적으로 경륜을 펼칠 수밖에 없었다. 그는 천명사상에 바탕한 민본주의 정치사상을 주장하였고, 애민의식에 입각하여 왕실의 검소화와 진휼책을 제시하기도 하였다. 또한 민생안정을 통해 애국심을 증진시키고 양천종부종모법(良賤從父從母法)을 실시하여 서얼공사천(庶?公私賤)의 군역부담으로 국방강화정책을 주장하기도 하였다. 또한 이산보에게 준 편지에서는 개인적으로는 사심을 제거하고 근면, 청렴, 지혜를 발휘하여 공평무사한 업무처리를 위해 최선을 다하고, 대외적으로 인재관리와 활용에 적극적으로 임하면서, 궁민구휼(窮民救恤)이나 명인(名人)들에 대한 관리도 필요하다는 공직윤리를 제시하기도 하였다. 결국 송익필의 경세사상은 인정(仁政)이나 덕치에 바탕한 민생안정을 통해 지치라는 왕도정치에 도달하고자 하는 구체적 방법론을 제시한 것이라고 할 수 있다. 천부적 자질과 지략으로 제갈량에 비유되기도 하고, 이이, 성혼, 정철, 이귀 사인(四人)의 모주(謀主)로, 혹은 간귀(奸鬼)로 악평될 만큼 뛰어난 경세 능력을 가지고 있던 그이다. 그러나 그의 경세사상은 신분상의 제약으로 미완으로 끝날 수밖에 없었다. 누구보다 백성들을 사랑하였고, 민생 안정을 위한 혁신적인 개혁안을 꾸준히 제기하였으며, 실천할 능력 또한 소유하였던 그였다. 그러나 지치라는 이상은 꿈으로 남을 수밖에 없었다.

견비통(肩臂痛)에 대한 Trigger Point 자침(刺鍼)과 원위취혈(遠位取穴)의 치료효과(治療效果)에 대한 임상적(臨床的) 비교(比較) 연구(硏究) (Clinical Study of Different Effect between Trigger Point Needling and Remote Acupuncture Point Needling on Shoulder Pain Patient)

  • 이진석;송계화;이성노;김대중;유정석;남효익;김회영;손현수
    • Journal of Acupuncture Research
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    • 제24권5호
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    • pp.89-96
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    • 2007
  • Objectives : This report is to compare Remote Acupuncture Point Needling group with Trigger Point Needling group about Shoulder pain treatment. Methods : From November 11th 2006 to May 10th 2007, 30 cases of shoulder pain patients were divided into 2 groups ; one group(test I group) took remote acupuncture point needling, and the other group(test II group) took trigger point needling. For evaluating change of pain, Visual Analog Scale(VAS) and clinical evaluation grade and Range of Motion was checked before and after Treatment. Results : Both acupuncture therapy showed good effect on shoulder pain. And test II group showed better effect on decreasing pain than test I group. It was proved by the difference between VAS and ROM checked before treatment and what checked after treatment. But it was only significant statistically for adduction, inversion and eversion of shoulder joint motion. Conclusion : Trigger point needling can be recommended as a useful therapy to treat shoulder pain.

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치(齒)에 대(對)한 문헌적(文獻的) 고찰(考察) (A Literature Study of the Teeth)

  • 곽익훈;윤철호;정지천
    • 대한한방내과학회지
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    • 제16권2호
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    • pp.146-177
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    • 1995
  • The purpose of this study was to investigate the relationship between the teeth and Zhang-Fu(臟腑), dental diseases, and the hygiene of the mouth through the literature of oriental medicine. First, the relatonship between the teeth and Zhang-Fu is reviewed as follows: The teeth are influenced by Shen(腎) because they are the end of bone and Biao(標) of Shen. Gingiva is related to Wei(胃) and Da-Chang(大腸) because it is passed by Yangming-Channel(陽明經). The growth and nutrition of teeth depends on Shen. The pathological condition of Shen causes the gingival atrophy, the loose of teeth, dedentition due to aging, withering of teeth, and tartar: whereas the pathological condition of Wei and Da-Chang causes toothache, gingivitis, inflamed gums, bad breath, and gingival hemorrhage. Second, the causes and therapies of dental diseases through the literature can be summarized as follows: The major causes of toothache are the pathogenic condition of wind-heat and wind-cold, the heat syndrome of Wei, the damp-heat of intestine, flaring-up of fire of deficiency type, rotten tooth, etc... The principal causes of dedentition and the shaking and loose of teeth are the deficiency of Shen, and the rest of causes are the damp-heat of Yangming. Gingival atrophy is caused by the deficiency of Shen, whereas the gingival hemorrhage comes from the factors in the pathogenic factor of wind-heat of Yangming-Channel, the heat syndrome of stomach, and the deficiency of Shen. The causes of grinding of teeth during sleeping are stomach-heat, and the delayed dentition and the withering result from the deficiency of Shen-Jing.(腎精) The principal therapies of toothache are removing wind and heat, clearing away heat and prompting diuresis, clearing away the stomach-heat, replenishing vital essence to tonify the Shen, relieving superficial syndrome by wind-cold, and alleviating pain by destroying parasites. For the prescription of the principal therapies, there are Xijio Dihuang Tang, Jiajian Ganlu Yin, Qufeng Wan, Qingwei San, Tiaowei Chenggi Tang Shengong Wan, Liangge San Qingwei Tang Yunu Jian, Liuwei Dihuang Wan Zuogui Yin Bawei Wan Wanshao Dan, Xixin San Badou Wan Gianghuo Fuzi Tang, Jiuzi Tang Badou Wan, etc... The therapies of dedentition and the shaking and loose of teeth are replenishing vital essence to tonify the Shen, and warming and recuperating the Shen-Yang: as the prescription, there are Liuwei Dihuang Wana Zuogui Yin, and Bawei Wan Anshen Wan Wanshao Dan Yougui Wan etc... The therapies of gingival hemorrhage are clearing away the stomach-heat, replenishing vital essence to tonify the Shen, warming and recuperating the Shen-Yang(腎陽), and moisturing and purging intence heat with the prescription of Tiaowei Chenggi Tang Xijiao Dihuang Tang, Liuwei Dihuang Wan Zuogui Yin, Bawei Wan Anshen Wan, and Yunu Jian. The therapy of gingival atrophy is replenishing vital essence to tonify the Shen in the prescription of Liuwei Wan Bawei Wan Ziyin Dabu Wan. The therapies of grinding of teeth during sleeping are clearing away the stomach-heat and purging intense heat, and invigorating the spleen through eliminating dampness in the prescription of Qingwei San, Wumei Wan, etc... The therapy of delaed dentition is replenishing vital essence to tonify the Shen with the prescription of Liuwei Wan Buyin Jian, etc... Third, clinical treatment reports of dental diseases are reviewed as follows: The toothache due to stomach-heat was treated by medical herbs like Gypsum, Natrir Sulfas, Rehmanniae, Schizonepetal Herba, Menthae Folium, Cimicifugae Rhizoma, and Scrophulariae Radix. The therapies of toothache due to flaring-up of fire in deficiency type from deficiency of Shen provided with replenishment of vital essence to tonify the Shen and clean ministerial fire, and the prescription was the kind of Liuwei Wan, which worked very well. The therapy of dedentition and loose of teeth due to deficiency of Shen was done to stablize the teeth as tonifing the Shen with the prescription of Guchi Wan. The rate of imrovement was over 90%. The destruction of periodontal tissue due to periodonititis was cured of dispelling wind, reducing heat, and alleviating pain, It was improved by taking Zizhi Xingiong Tang, Guchi Xiaotong San, Yunii Jian, and Qingwei San about 3-7 days, and the rate of improvement was over 80%. Fourth, the prevention and regimens are reviewed as follows: As a physical and breathing exercise of the teeth, tapping teeth which stimulates the circulation of Qi(氣) and Xue(血) had been used. The tapping time of 14, 17, 36, etc... has been reported, and it should be applied based on the body condition. The medical herbs for gargling and brushing teeth have been used. Specifically, Cimicifugae Rhizoma, Gypsum, Gypsum Fibrosum, and Indigo pulrelrata Lereis have been used to reduce heat, Coptidis Rhizama and Yang Jinggu to eliminate damp-heat, Amomi Semen, Cyperi Rhizoma, Flos Caryophylli, Asari Radix, Piperis Longi Fructus, Santali Albae Lignum, Meliae Fructus, Moschus, Aquillaiae Lignum, and Borneol to promote the circulation of Qi and to relieve pain, Ligustici Radix, Angelice Radix, Rhizoma Nardostachydis, Tribuli Semen to relieve superficial syndrome by means of diaphiresis, and Cnidii Rhizoma, Angelicae sinensis Radix, and Olibanum to promote blood circulation to stop pain.

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