• Title/Summary/Keyword: breaking point

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A Quality Comparison of Traditional Korean Papers: Mixtures of Bast-Fiber with Straw pulp(Rice straw paper) in Different Composition Ratio (고정(藁精) 혼합비율에 따른 한지의 물성 비교)

  • Jung, Sun-Young
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.39 no.1 s.119
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    • pp.48-55
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    • 2007
  • The aim of this article is to review the general property of the famous traditional Korean paper, "rice straw paper"(Bast-Fiber mixed with straw pulp), and to compare the paper qualities varying with the composition ratio of straw pulp, in order to revive the traditional paper in modem Korea. The experiment was carried out by making first the two different mixture papers, i. e., one is the paper of 50% bast fiber mixed with 50% straw pulp, and the other is the paper of 75% bast fiber with 25% oats straw pulp, and finally the 100% bast fiber paper was made for the purpose of comparison. The qualitative properties of these three kinds of paper with the different mixing ratio of the straw pulp were evaluated, and the findings of the experiment can be summarized as follow: 1. As to the quality aspects of the paper strength like tensile strength, breaking length, elongation, and tear strength, the test proved the 100% bast fiber paper as best, and the 50% mixed paper as the next good one. 2. In aspect of the printing adaptability such as density, opacity, brightness, whiteness, lab colors, air permeability, and roughness, the 50% mixed paper proved to be the best, due to the short cells in the straw pulp. 3. As to the air permeability, the larger ratio of straw pulp was found to be the lesser, and 75% bast fiber with 25% straw pulp mixture paper and the 100% bast fiber one were found 1/5 degree efficient. 4. In terms of the water absorption degree, 100% bast fiber paper was the fastest, but in case of mixture paper, 50% mixed one was a little faster up to the point of 1cm, while the two kinds of mixed ones appear to be almost similar to each other beyond the point. 5. The straw pulp mixed paper, especially the 50% mixed one was evaluated as the highest by the calligraphers who had experienced using the papers in terms of movement and feeling of the caligraphy and painting. In addition, although the 25% mixed paper is judged to be good for book printing because of the strength, the 50% mixed paper can be thought to be more desirable for painting and calligraphy. In conclusion, we will be able to make the quality paper with durability, by mixing the straw pulp with the bast fiber in proper ratio, following the tradition of Korean paper making.

2D Image Numerical Correction Method for 2D Digital Image Correlation (2차원 DIC 기법 적용을 위한 2D 이미지 보정 수치 해석 기법)

  • Kim, Wonseop;Hong, Seokmoo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.4
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    • pp.391-397
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    • 2017
  • Recently, digital image correlation (DIC) techniques have been used to measure dynamic deformation during tensile testing. The standard tensile test method measures the average displacement of the relevant specimen to calculate the true stress-strain curve. Therefore, the validity of the true stress curve is restricted to the stress incurred within the uniform stretching interval, i.e., the maximum stress corresponds to the starting point of the necking deformation. Alternatively, if DIC is used, the effective range of the strain and strain rate can be extended to the breaking point of the tensile specimen, because of the feasibility of measuring the local strain over the entire area of interest. Because of these advantages, many optical 3D measurement systems have been introduced and used in research and industry. However, the conventional 3D measurement systems are exceedingly expensive and time consuming. In addition, these systems have the disadvantage of a very large equipment size which makes their transport difficult. In this study, a 2D image correction method employing a 2D DIC measurement method in conjunction with a numerical analysis method is developed using a smartphone. The results of the proposed modified 2D DIC method yielded higher accuracy than that obtained via the 3D measurement equipment. In conclusion, it was demonstrated that the proposed 2D DIC and calibration methods yield accurate measurement results with low time costs.

Violence and an Ethical Figure in Harold Pinter's One for the Road (해롤드 핀터의 『길 떠나기 전 한잔』에 나타난 폭력과 윤리적 주체)

  • Lee, Seon Hyeon
    • English & American cultural studies
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    • v.18 no.4
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    • pp.103-137
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    • 2018
  • Harold Pinter's One for the Road(1984) is a play about violence. Nicholas, who appears to be the manager of a place, interrogates Victor, Nicky, and Victor's wife Gila in a room for one day from morning to night. There is no direct physical violence in this play. But hints about the atrocities that took place outside the stage make the audience guess the violence and cruelty. Violence, which is not seen as such, is the central theme of the play. One for the road is worth reading as a resistance to breaking the mirror of global ideology, not as it deals with violent events confined to Turkey. The problem which Pinter had in mind, in particular, is that the United States plays a leading role in producing world-class ideologies, and that Britain is involved in collusion with the United States in cultivating such ideological fantasies, both abroad and at home. This thesis analyzes the contrasting reactions of each character in the play based on this social context. In particular, the conflicting reactions of the characters on the system are the most important conflict in the drama. Nicolas is a manager who moves on the system without seeing the truth. Victor and his family, on the other hand, do not move within the same ideology as Nicholas. This paper will take a look at what their strategies of resistance is and how they are revealed in the work. In fact, Nicholas appears split. Nicholas seemingly reacted decisively to the interpellation of the system. He expresses his belief and respect for the legitimacy of his actions. However, he has repeatedly sought the respect and love of Victor. Nicholas is now swaying. The theme that Nicholas presents consciously by grabbing at his own sway is 'Patriotism.' But this fantasy splits through Victor's silence and death demands. Therefore, the questions to be answered are: So why does Nicolas appear to be torn apart in a system that directs violence? But why is he forced to assimilate into the system? What other figures imply? To answer these questions, this thesis will take Slavoj Zizek's view of ideology. On the other hand, there are previous studies that read the system of violence in One for the road from the Althusser's perspective. Surely, this play explores the role of Ideological State Apparatus. However, from the point of view of Althusser, it is not possible to read Nicholas's division and the point of resistance seen by Victor's family. Pinter does not limit the scope of the ideological system as a closed one that regenerates ideologies, but secures the domain of main body resistance and struggle. On the other hand, there are already several domestic theses that read Pinter's work in Zizek's perspective. But these theses are mainly focused on analysis of Mountain Language. What this thesis would suggest is that there is a potential for an ethical figure of Zizek to be considered in One for the Road.

A Starting Point of Formation and Development of Baekje-style Stone Stupa (백제양식석탑의 형성과 전개의 시발점(始發點))

  • Jun, Ji Hye
    • Korean Journal of Heritage: History & Science
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    • v.42 no.4
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    • pp.172-197
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    • 2009
  • The stone stupas of the Mireuk Temple Site and Jeongnim Temple Site were the beginning of Korean stone stupa and the unique ones stemming from the Baeje period. Therefore, the work of investigating the characteristics of these two stone stupas would give us a basis for understanding Korean stone stupas in a large scale and Baekje-style stone stupas in a narrow sense. As shown in some records, the excellent architectural skills of Baekje could be known by the fact that Abiji was invited to the building of Hwangryong Wooden stupa, one of the national undertakings of Shilla and the skills and styles related to stone stupas were thought to be disseminated in this process. However, it has not been very convincing that the stone stupas with Baekje styles were disconnected in an instant with the unification of Shilla, in terms that culture and art would inherited and developed. The current academic circle set a frame and defined all these types of stone stupas as Baekje-system stone stupas built in Goryeo period and put them in a uniformly chronological order. The popularization of Buddhism, support of regionally powerful clans and cultural revival were suggested as the factors of their appearance, but it seemed difficult to be assured that these led Baeje-style stone stupas to reappear in a moment by breaking the gap of about 300 years. Of course, it has not been active in Gyeongju area, but they have greatly influenced the stone stupas of Shilla; therefore, it would be possible to consider that they were developed but limited to certain areas. This study focused on the starting point of such development and investigated the formation of Baeje-style stone stupas through the stone stupas of the Mireuk Temple Site and Jeongnim Temple Site and their subsequent development through Wanggung-ri Stone Stupa.

Effects of Organic Ca Supplements on Ca Bioavailability and Physiological Functions in Ovariectomized Osteoporotic Model Rats (난소절제 골다공증 흰쥐모델에서 유기태 칼슘보충제가 칼슘 이용성과 생리기능에 미치는 영향)

  • Cho, Su-Jung;Park, Mi-Na;Kim, Hee-Kyong;Kim, Jae-Hong;Kim, Min-Ho;Kim, Wan-Sik;Lee, Yeon-Sook
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.40 no.5
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    • pp.665-672
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    • 2011
  • We evaluated the effects of organic Ca supplements chelated with milk protein (CaMP) in ovariectomized osteoporotic rats. Eight week-old Sprague-Dawley female rats were ovariectomized and fed a low $CaCO_3$ diet (0.1%) for 4 weeks to create an osteoporotic model. At that point, L4-$CaCO_3$ rats were sacrificed and the rest of the rats were divided into 4 groups, each of which was fed an experimental diet for 4 weeks: low-$CaCO_3$ (0.1%; L8-$CaCO_3$) and CaMP at 3 Ca levels: low (0.1%; L8-CaMP), normal (0.5%; N8-CaMP), and high (1.5%; H8-CaMP). Daily weight gain, serum ALP, weight and breaking force of femurs, Ca content of the lumbar, and Ca absorption were measured. Daily weight gain increased in the N8-CaMP and H8-CaMP groups compared to the low Ca groups. The ALP activity in the CaMP-fed rats was significantly lower than in the $CaCO_3$-fed rats. Both breaking force and femur weight were higher in the N8-CaMP and H8-CaMP groups compared to the L8-$CaCO_3$ group. Ca content of the lumbar increased dose-dependently with Ca intake levels of CaMP. Ca absorption rates of the CaMP-fed rats increased more than that of the rats fed low Ca levels of $CaCO_3$. These results demonstrate that the CaMP supplement had positive effects on bone metabolism and Ca bioavailability in ovariectomized osteoporotic rats. Therefore, CaMP may be recommended as a useful Ca supplement to prevent bone loss in osteoporosis.

A Study on the Aspects of Anti-Japanese and Pro-Japanese Literature Shown in Japanese Korean Literature History (일본 한국문학사에 나타난 항일문학과 친일문학 기술양상)

  • Son, Jiyoun
    • Cross-Cultural Studies
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    • v.52
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    • pp.133-164
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    • 2018
  • This purpose of this paper is to focus on anti-Japanese literature and pro-Japanese literature skills among Korean literary history written in Japan, and to observe the differences between Korean and Japanese perception surrounding anti-Japanese and pro-Japanese literature. Analyzed texts are "Taste Korean Literature" by Saegusa Dosikatsu and "The Footsteps of Modern Literature of Chosun" by Shirakawa Yutaka, the earnest modern Korean literary historians written from the perspective of Japanese writers, and though there's no overall written history of literature, they were seen through with the perspective of Omura Masuo, at the forefront of Japanese researchers in modern and contemporary Korean literature. The main results of the review are as follow: First, In Korean literary history by Japan, the frame "pro-Japanese literature" is clearly embedded. It is clearly distinctive from the aspect of China or North Korea, and though it follows the narration system of South Korean literature, it also forms the breaking (turning) point of anti-Japanese and pro-Japanese literature relative to anti-Japanese and pro-Japanese literature. Second, even if it follows the narration system of South Korean literature, that question was constantly raised on existing Korean academic evaluation of anti-Japanese and pro-Japanese literature, and different interpretations of reading were practiced. For example, Korean academic circles highly regard literature of writers such as Kim, Jong han or Lee, Seok hoon, while Korean academics do not place much importance on Lee, Gwang Soo's pro-Japanese elements that are important. The third point is that generous marks are credited to writers with outstanding Japanese or to Japanese creative writing. As a result, they dissolve internal logic in different pro-Japanese collaborators such as Chang, Hyuk Ju, Kim, Sa Ryang, Lee, Seok hoon, or Kim, Yong Jae by melting the same "Japanese literature" in a cage. The last point is reading different inner thoughts of Kim, Jong-han or Lee, Seok-hoon unlike outspoken pro-Japanese collaborators such as Lee, Gwang soo, Jang, Hyuk Joo or Kim, Yong je. These points require more in-depth analysis, and will be continued in follow-up tasks.

Characteristics of Tropical Cyclones in 2010 (2010년 태풍 특징)

  • Lim, Myeong Soon;Moon, Il-Ju;Cha, Yu-Mi;Chang, Ki-Ho;Kang, Ki-Ryong;Byun, Kun Young;Shin, Do-Shick;Kim, Ji Young
    • Atmosphere
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    • v.24 no.3
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    • pp.283-301
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    • 2014
  • In 2010, only 14 tropical cyclones (TCs) were generated over the western North Pacific (WNP), which was the smallest since 1951. This study summarizes characteristics of TCs generated in 2010 over the WNP and investigates the causes of the record-breaking TC genesis. A long-term variation of TC activity in the WNP and verification of official track forecast in 2010 are also examined. Monthly tropical sea surface temperature (SST) anomaly data reveal that El Ni$\tilde{n}$o/Southern Oscillation (ENSO) event in 2010 was shifted from El Ni$\tilde{n}$o to La Ni$\tilde{n}$a in June and the La Ni$\tilde{n}$a event was strong and continued to the end of the year. We found that these tropical environments leaded to unfavorable conditions for TC formation at main TC development area prior to May and at tropics east of $140^{\circ}E$ during summer mostly due to low SST, weak convection, and strong vertical wind shear in those areas. The similar ENSO event (in shifting time and La Ni$\tilde{n}$a intensity) also occurred in 1998, which was the second smallest TC genesis year (16 TCs) since 1951. The common point of the two years suggests that the ENSO episode shifting from El Ni$\tilde{n}$o to strong La Ni$\tilde{n}$a in summer leads to extremely low TC genesis during La Ni$\tilde{n}$a although more samples are needed for confidence. In 2010, three TCs, DIANMU (1004), KOMPASU (1007) and MALOU (1009), influenced the Korean Peninsula (KP) in spite of low total TC genesis. These TCs were all generated at high latitude above $20^{\circ}N$ and arrived over the KP in short time. Among them, KOMPASU (1007) brought the most serious damage to the KP due to strong wind. For 14 TCs in 2010, mean official track forecast error of the Korea Meteorological Administration (KMA) for 48 hours was 215 km, which was the highest among other foreign agencies although the errors are generally decreasing for last 10 years, suggesting that more efforts are needed to improve the forecast skill.

Science & Technology Business: The Role of International Science Business Belt in Korea (과학기술 비즈니스(S&T Business): 과학벨트(ISBB)의 역할)

  • Lee, Won Cheul;Choi, Jong-In
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.11 no.4
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    • pp.139-148
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    • 2016
  • The importance of technology commercialization is being emphasized more and more, but high technology excellence does not always lead to a successful business. In addition, companies that invest heavily in basic research and technology development are also not always able to guarantee high profits. This is due to the technical problems when present in step research and development levels are difficult to commercialize. And the market will not work rationally is also the cause of the problem. Therefore, to effectively utilize the resources necessary to ensure such partners to build alliances and cooperation with external funding or manpower is crucial to commercialize the research results of basic science successfully. In previous studies, it has been made many studies in accordance with the approach to the technology (e.g. Research and Development, Management of Technology, Technology Innovation, etc.). But the study of technology commercialization point of view is not being done much. This study should explores the available business required, or realized in the process of researching the basic science and trying to understand the imperfections of the market through the property of technology (tacit knowledge, objectified value of technology and the information asymmetry between innovation subjects, etc.). In addition, this paper, we try to focus on a strategic approach to the role of International Science Business Belt (ISBB) with success in science and technology business as appropriate countermeasures about breaking the 'Valley of Death.

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현대 서양복식에 나타난 이국취향 (Exoticism)에 관한 연구 -1980년대 중반~1991년의 서양복식을 중심으로- (The Study of Exoticism in Western Costume)

  • 송명진;양숙희
    • Journal of the Korean Society of Costume
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    • v.18
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    • pp.291-306
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    • 1992
  • From the mid-1980s '91s, remarkable Ethnicism and Primitivism in the Europe fashion trend could be represented as an exotic taste longing for secenery and emotion of non-europe area in the West. These phenomenon could be found out in connection with Acculturation, which means when two different cultures or more were contacted they were identified or merged in process of diffusion and change of them. This point of view was the culture anthropologic one that make a comparison and analysis of sameness and difference between cultures. The purpose of this study was to illuminate exotic taste represented in costume in the cluture-anthroplogic aspect, to compare with beauty of costume that each culture of costume and the meaning of the times due to those differences. an aspect of the exotic taste and character in the western costume that was inspected by dividing into 'Primitivism', 'Oriental element' and 'the element of a national costume in the East European bloc ' were as follows; First, Primitivism had something in common with what was pursued in the trend of Modern Art, through the late 19th century to the early 20th century. In fashion fettered by technique, the creation expressed in a free was and showed simple beauty of costume. At the same time, pure emotion expression, creative power and witty strong expression give the cognition of transcendency breaking the routine and the cognition of complexity of an included conception. Those are garments showing not only the primitive thought and mysticism but a fancy, an abstraction, and a life. Colors and accessaries which described nature and matched simple costume composition to the expression of various material or patterns transmitted the image of the primitive strongly. Second, "Drental element" which had an effect on western custome historically in a long time had outstanding luxurios adornmental beauty of custome. Extending from the Arab stated India, China, Korea, Japan, each national costume with a gay national culture became one of motif. Various ornamental factors expressed on Trapez Line, Sime Line and Drape, or Raied style, which did not restrict the body. Those were not only functional Easy Look, but were also satisfying human's ornamental desire. Third, national factors in the East European bloc are theme that begins to be embossed in the late 80's. In view of a political change and cultural situation with a double character of Europe and Orient, it was estimated that national factors have great importance in fashion. Item concerned with new concern appeared at Autumn & Winter collection. It shows elegant and graceful beauty of costume by adding a fur or jewel to simple form. These national factors in the East European bloc are simple form, but shows the difference in more cubic formation than form expressed in Primitivism or Oriental factors Exotic taste appeared form 80's to 91's, is thought to create an forgotten romantic emotion and traditional fashion

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A Study on the recycling of sewage sludge cake using microwave drying (하수슬러지 케이크의 마이크로파 건조 후 재활용 연구)

  • Ha, Sang An;Yeom, Hae Kyong;You, Mi Young
    • Journal of the Korea Organic Resources Recycling Association
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    • v.14 no.3
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    • pp.77-84
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    • 2006
  • The objective of this research is to evaluate various reclamation methods of sewage sludge cake after treating with microwave under optimum conditions. In this study the sewage sludge cakes used from S and N wastewater treatment plants in the P city. Microwave with an induced electricity heating way was employed for dehydration of sewage sludge cake. Microwave operation conditions is 2,450 MHz of frequency and the power with 1 to 4 kW. This sewage sludge cake had a moisture content of 70%. The moisture content of the sludge decreased notable up to 2%(wt) resulted in breaking of cell wall. When the treated sewage sludge cake mixed with soils could be applied to use midterm and last cover material soils. Moreover, the adsorption ability of heavy metals such as copper, lead, chromium and cadmium was greatly enhanced by treated sewage sludge cake. Within 30 minutes, 1ppm of copper, chromium and cadmium and 10ppm of lead with 1g of the treated sewage sludge cake in $100m{\ell}$ were below detection. It was possible to use the treated sewage sludge cake as an absorbent for absorption of toxic heavy metals. Results from this research indicated that using of microwave radiation was an effective method for treating sewage sludge cake economically and environmental. A point of view of reclamation, the treated sewage sludge cake appeared to be feasible with an adsorption of heavy metals in steady of using expensive yellow earth.

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