• Title/Summary/Keyword: 역설치

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금리와 물가간의 인과관계 ("깁슨의 역설")분석 : VAR 및 VARMA 모형분석

  • Nam, Ju-Ha;Park, Jae-Cheol
    • The Korean Journal of Financial Management
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    • v.10 no.2
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    • pp.161-179
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    • 1993
  • 본 논문은 벡터자기상관(VAR) 모형과 벡터자기상관이동평균(VARMA) 모형을 사용하여 명목금리와 물가(도매물가)사이의 동태적 관계를 분석한다. 명목금리와 물가사이의 정(+)의 상관관계는 소위 $\ulcorner$깁슨의 역설$\lrcorner$로 불리워지고 있는데, 실증분석 결과에 의하면 한국의 경우 깁슨의 역설은 존재하지 않는 것으로 보여진다. 과거의 많은 연구들이 $\ulcorner$깁슨의 역설$\lrcorner$을 지지하는 실증결과들을 발견한 것은 관련변수들의 안정성(stationarity)을 고려치 않은 것으로 판단된다. 본 논문에서처럼 관련변수들의 안정성을 얻기위해 수준변수(예를들면, 도매물가지수) 대신에 차분되거나 증가율을 사용하고, 금리 및 물가이외에 두변수에 영향을 줄 수 있는 변수(예를들면, 통화변수)들을 포함하는 다변수 모형을 이용한다면 우리나라에서는 $\ulcorner$깁슨의 역설$\lrcorner$은 발견되지 않은 것으로 보여진다. 즉, 회사채 수익율과 도매물가상승율을 명목금리와 물가변수로 각각 사용하고, $1972.III{\sim}1991.III$사이의 분기별 자료를 대상으로 분석한 결과, 두변수 사이의 관계는 일방적 인과관계보다는 독립적인 관계로 나타나고 있다.

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Emprical Tests of Braess Paradox (The Case of Namsan 2nd Tunnel Shutdown) (브라이스역설에 대한 실증적 검증 (남산2호터널 폐쇄사례를 중심으로))

  • 엄진기;황기연;김익기
    • Journal of Korean Society of Transportation
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    • v.17 no.3
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    • pp.61-70
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    • 1999
  • The Purpose of this study is to test whether Braess Paradox (BP) can be revealed in a real world network. Fer the study, Namsan 2nd tunnel case is chosen, which was shut down for 3 years for repair works. The revelation of BP is determined by analyzing network-wise traffic impacts followed by the tunnel closure. The analysis is conducted using a network simulation model called SECOMM developed for the congestion management of the Seoul metropolitan area. Also, the existence of BP is further identified by a before-after traffic survey result of the major arterials nearby the Namsan 2nd tunnel. The model estimation expected that the closure of Namsan 2nd tunnel improve the network-wise average traffic speed from 21.95km/h to 22.21km/h when the travel demand in the study area and congestion Pricing scheme on Namsan 1st & 3rd tunnels remain unchanged. In addition, the real world monitoring results of the corridors surrounding Namsan 2nd tunnel show that the average speed increases from 29.53km/h to 30.37km/h after the closure. These findings clearly identify the BP Phenomenon is revealed in this case.

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Investigation of Orifice delta pressure abnormal condition for measuring Main Feed Water Flow in Nuclear Power Plant (원전 주급수 유량측정용 오리피스의 차압 비정상 고찰)

  • Lee, Woo-Kwang;Kim, Kye-Yun;Ko, Woo-Sig
    • The KSFM Journal of Fluid Machinery
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    • v.13 no.3
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    • pp.12-17
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    • 2010
  • The orifice establishment which is improper does to change the entity differential pressure and occurs an error in flow measurement data. Because of this, the thermal power of nuclear power plant could be evaluated excessively and the safety margin could be decreased. In this paper, characters of orifice which is established abnormally was investigated. Specially, the orifice plate which is established in opposition case was modeled and analyzed. Finally, 14.4% was lowly measured differential pressure, when being established in the resultant opposition. And this result with EPRI and NRC experiences was similar.

The paradox of 'Shame[恥]', the dynamics of emotions ('부끄러움[치(恥)]'의 역설, 감성의 동역학 - 단종복위운동과 임병양란기 시조를 중심으로 -)

  • Jo, Tae-Seong
    • Sijohaknonchong
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    • v.44
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    • pp.255-279
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    • 2016
  • Ignominy are ashamed or that mind. It is noted that this article 'shame[恥]' will do for obtaining the social dynamics in some way in the literary aspect. To investigate this aspect, this article took the text produced on the basis of 'shame[恥]' to be analyzed. First, through the Sayuksin[死六臣]'s Sijo[時調], 'Shame[恥]' they have confirmed the room to go to form a sympathy by revealing without hidden. It is worth evaluating in common with these Sijo is that of justice or loyalty. But the parameters of evaluation described what people are rare. In this article, I saw the parameter to 'shame[恥]'. Second, through the Sijo created in the war of the middle age of Chosun Dynasty, I examined the aspect of 'anger' which sparked a shame[恥]. Thus shame[恥] is hard to change the world directly. However, the possibility that it can also be a psychological instrument was found to be sufficient. In conclusion, 'shame[恥]' is clearly greater tendency to dismiss as a private act of the heart. But, I understood that the negative region of 'shame[恥]' can be converted to positive region. At this time, The premise of 'shame[恥]' should always be oriented to justice.

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현장탐방 고객감동 현장 - 에스엠비티(주) 전남지점

  • Kim, Hyeon-Ok
    • Life and Agrochemicals
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    • v.29 no.10
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    • pp.33-35
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    • 2008
  • 전통문화와 첨단산업이 공존하는 자족형 혁신도시를 추구하는 나주시. 영산강 문화의 뿌리를 둔 생명의 당이다. 배 주산단지인 이곳 나주에 '천우지베레린'을 확인시킨 에스엠비티(주) 전남지점(지점장 김현옥 44)이 자리하고 있다. 2006년 최초 1호 지점으로 설립, 에스엠비티(주)와 인연을 시작한 김지점장은 "고객과의 만남을 위해 현장으로 떠나는 매일 아침이 적지 않게 설레인다"면서 "하루 이동거리가 보통 250여km를 상회, 때론 지치기도 하지만 항상 생명이 살아 숨쉬는 현장의 목소리에 귀 기울이며 함께 꿈을 이룰 수 있어 행복하다'며 그의 환한 웃음 속에 열정을 내비친다. 이 같은 열정은 지난해 전국 우수지점에 선정된 영예와 무관치 않다. "영업력은 성실, 정보력, 대인관계, 적시적소의 운영 등 개인의 능력에 좌우된다"며 선두지점의 자부심을 드러내는 김 지점장은 "농가들은 작물보호제품의 인지도를 쉽게 바꾸려 하지 않아 우선 고객의 마음에 신뢰와 믿음을 심어주어야 한다. 끊임없는 제품연구와 정확한 정보 전달, 수요와 판매예측의 시장분석을 통해 적시적소에 적합한 제품을 공급해야 한다"면서 타사와의 차별화 전략에 대해 역설하며 그의 일상이 빼곡히 적혀있는 다이어리를 넘기며 또 다른 미래를 준비하고 있다.

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Influence of the angles and number of scans on the accuracy of 3D laser scanning (3 차원 레이저 스캔영상 채득 시 스캔각도와 횟수에 따른 정확도)

  • Lee, Kyung-Min;Song, Hyo-Young;Lee, Ki-Heon;Hwang, Hyeon-Shik
    • The korean journal of orthodontics
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    • v.41 no.2
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    • pp.76-86
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    • 2011
  • Objective: To investigate whether the accuracy of 3D laser scanning is influenced by the angles and number of scans. Methods: Using a 3D laser scanner, 10 manikins with facial markers were scanned at 7 horizontal angles (front view and at $20^{\circ}$, $45^{\circ}$, and $60^{\circ}$ angles on the right and left sides). Three-dimensional facial images were reconstructed by 6 methods differing in the number and angles of scans, and measurements of these images were compared to the physical measurements from the manikins. Results: The laser scan images were magnified by 0.14 - 0.26%. For images reconstructed by merging 2 scans, excluding the front view; and by merging 3 scans, including the front view and scans obtained at $20^{\circ}$ on both sides; several measurements were significantly different than the physical measurements. However, for images reconstructed by merging 3 scans, including the front view; and 5 scans, including the front view and scans obtained at $20^{\circ}$ and $60^{\circ}$ on both sides; only 1 measurement was significantly different. Conclusions: These results suggest that the number and angle of scans influence the accuracy of 3D laser scanning. A minimum of 3 scans, including the front view and scans obtained at more than $45^{\circ}$ on both sides, should be integrated to obtain accurate 3D facial images.

Gender of the Square and Sexuality Politics of 'Revolution' -1996-2016, Revolutionary Records and Memories (광장의 젠더와 혁명의 성정치 -1996-2016, 혁명의 기록과 기억'들')

  • So, Young-Hyun
    • Journal of Popular Narrative
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    • v.26 no.2
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    • pp.157-190
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    • 2020
  • How is the "Yonsei University Incident" of August 1996 remembered from a periphery perspective and a gender perspective? With this question in mind, I reviewed the history of the revolution and the missing memories in the period from 1996 to 2016 in Korean literature. I tried to recover the story of the revolution experienced and remembered by those who were politically invisible or gender-excluded, by centering on novels with strange reminiscences of the student movement in 1996, namely Yoon I-Hyung's "Big Wolf Blue" ("Big Wolf Blue", 2011), Choi Eun-Young's "Responsibility"(2018), Hwang Jung-Eun's Didi's Umbrella (2019) and Park Sang- Young's "A piece of Rockfish Sashimi The Taste of the Universe"(How to Love in Metropolis, 2019). There is a correlation between the perception of the periphery and the name of the "unrememberable" revolution. And this fact tells us that revolution does not mean the same thing to everyone, even when it "passes" through the midst of a revolution that shares the imagination of a better society and the desire to reorganize the system. In other words, it emphasizes that the logic of exclusion and hierarchy was still in operation even at the moment of revolution. It would be said that this review is not only a rethinking of the student movement, but also a reevaluation from the gender perspective of Korean society in the 1990s.

The Great Learning and the Political Philosophy (『대학』의 정치철학: 자기성찰(自己省察)과 혈구행정(絜矩行政)의 정치)

  • Ahn, Woi-Soon
    • The Journal of Korean Philosophical History
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    • no.27
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    • pp.327-361
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    • 2009
  • So far there has been a strong tendency to study The Great Learning in terms of quite" limited ethical and moral understandings." Yet The Great Learning was originally a political text to educate the ruler. So the ethical and moral understanding discussed in the book should be interpreted as something more comprehensive and practical, which includes the political ability. This paper thus focuses on this new line of understanding of The Great Learning. Among the three principles of the book, 'Myeongmyeongdeok( 明明德)' means the virtue of a politician, that is to 'cultivate (Myeong)' the 'properties for a statesman (Myeongdeok).' 'Sinmin (新民)' means 'to innovate or reform the people as a result of substantive administration of a politician'. 'Jieojiseon (止於至善)' means 'to reach and to maintain the highest degree of goodness as a result of Myeongmyeongdeok and Sinmin'. These three principles would divide into eight practicums. Myeongmyeongdeok would divide into five steps of 'Sugi(修己: Cultivating the self)' practicum, which are 'Gyeokmul (格物) → Chiji(致知) → Seongeui(誠意)→ Jeongsim (正心)→ Susin (修身)'. Sinmin would divide into three steps of 'Chiin (治人: rule the people)' practicum which are 'Jega(齊家) → Chiguk(治國) → Pyeongcheonha(平天下).' And the point where the two practicums are harmonized, i.e. that of Sugichiin (修己治人), is the place of Jieojiseon. Not every ethical people become a politician but every politician must be ethical. That is the assertion of the Great Learning.

Analysis of Causes of and Solutions to the Stack Effect by Vertical Zoning of High-rise Buildings (초고층 건축물 수직조닝별 연돌효과의 원인 및 해결 방안 분석)

  • Shin, Sang Wook;Ryu, Jong Woo;Jeong, Hee Woong;Kim, Dae Young
    • Journal of the Korea Institute of Building Construction
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    • v.21 no.5
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    • pp.483-493
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    • 2021
  • Urban overcrowding has created an explosive supply and demand for high-rise buildings. High-rise buildings are contributing to enhancing the image of the city by serving as focal points, but due to the stack effect, malfunction of elevator doors, difficulties in opening and closing the doors and windows of the outer wall, smoke and odors spreading to the upper floors, noise, energy loss, fire and pollutants have been causing various unexpected problems such as rapid spread of fire. This study classified high-rise buildings according to their vertical zoning, analyzed the causes of and solutions to the stack effect, and derived design and construction methods. Through the initial plan to block the outside air and securing airtightness through precise construction, we sought ways to secure the airtightness inside and outside the building by actively blocking the airflow from the lower floors. In addition, the facility solution can be a measure to reduce the specific phenomena caused by the stack effect, but it should only be applied to the minimum extent because the potential for secondary damage is high. This study emphasized the need for systematic stack effect management by suggesting design and construction measures for each vertical zoning of the causes and countermeasures of the stack effect. It is expected that this study will be helpful not only for design and construction, but also for building maintenance.

Ischemic Preconditioning and Its Relation to Glycogen Depletion (허혈성 전처치와 당원 결핍과의 관계)

  • 장대영;김대중;원경준;조대윤;손동섭;양기민;라봉진;김호덕
    • Journal of Chest Surgery
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    • v.33 no.7
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    • pp.531-540
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    • 2000
  • Baclgrpimd; Recent studies have suggested that the cardioprotective effect of ischemic preconditioning(IP) is closely related to glycogen depletion and attenuation of intracellular acidosis. In the present study, the authors tested this hypothesis by perfusion isolated rabbit hearts with glucose(G) is closely related to glycogen depletion and attenuation of intracellular acidosis. In the present study, the authors tested this hypothesis by perfusion isolated rabbit hearts with glucose(G)-free perfusate. Material and Method; Hearts isolated from New Zealand white rabbits(1.5~2.0 kg body weight) were perfused with Tyrode solution by Langendorff technique. After stabilization of baseline hemodynamics, the hearts were subjected to 45 min global ischemia followed by 120 min reperfusion with IP(IP group, n=13) or without IP(ischemic control group, n=10). IP was induced by single episode of 5 min global ischemia and 10 min reperfusion. In the G-free preconditioned group(n=12), G depletion was induced by perfusionwith G-free Tyrode solution for 5 min and then perfused with G-containing Tyrode solution for 10 min; and 45 min ischemia and 120 min reperfusion. Left ventricular functionincluding developed pressure(LVDP), dP/dt, heart rate, left ventricular end-distolic pressure(LVEDP) and coronary flow (CF) were measured. Myocardial cytosolic and membrane PKC activities were measured by 32P-${\gamma}$-ATP incorporation into PKC-specific peptide and PKC isozymes were analyzed by Western blot with monoclonal antibodies. Infarct size was determined by staining with TTC(tetrazolium salt) and planimetry. Data were analyzed by one-way analysis of variance (ANOVA) and Turkey's post-hoc test. Result ; In comparison with the ischemic control group, IP significantly enhanced functional recovery of the left ventricle; in contrast, functional significantly enhanced functional recovery of the left ventricle; in contrast, functional recovery were not significantly different between the G-free preconditioned and the ischemic control groups. However, the infarct size was significantly reduced by IP or G-free preconditioning(39$\pm$2.7% in the ischemic control, 19$\pm$1.2% in the IP, and 15$\pm$3.9% in the G-free preconditioned, p<0.05). Membrane PKC activities were increased significantly after IP (119%), IP and 45 min ischemia(145%), G-free [recpmdotopmomg (150%), and G-free preconditioning and 45 min ischemia(127%); expression of membrane PKC isozymes, $\alpha$ and $\varepsilon$, tended to be increased after IP or G-free preconditioning. Conclusion; These results suggest that in isolated Langendorff-perfused rabbit heart model, G-free preconditioning (induced by single episode of 5 min G depletion and 10 min repletion) colud not improve post-ischemic contractile dysfunction(after 45-minute global ischemia); however, it has an infarct size-limiting effect.

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