• Title/Summary/Keyword: Protest

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A Study on the Unsteady Flow Characteristics Analysis of Intake and Exhaust Pipe in 4 Cycle Spark-Ignition Engine (4사이클 전기점화기관에서 흡.배기관내 비정상 유동특성 해석에 관한 연구)

  • 정수진;김태훈;민규식;장형성
    • Journal of the Korean Society of Safety
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    • v.9 no.2
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    • pp.3-11
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    • 1994
  • This study discribes result of comparision of two other numerical method, method of characteristics (MOC) and Lax-Wendroff method(LWM) applied at wave action analysis of Intake and exhaust pipe. Partiality FCT(Flux Correct Transport) scheme is appeneded to LWM to protest unacceptable overshoots, occuring near discontinuity. The final conclusion of this study is that MOC should be replaced by a second order finite difference approach(such as the LW method). Clear benefits we can get by change are faster calculation, higher accuracy, conservation of mass and consistent calculation method.

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Numerical Simulation of Intake and Exhaust Flows and Noise in 4 Stroke S.I. Engine using the Lax-Wendroff Method (Lax-Wendroff 방법을 이용한 4행정 전기점화 기관의 흡.배기관내의 유동 및 소음특성 해석)

  • 정수진
    • Journal of Advanced Marine Engineering and Technology
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    • v.22 no.5
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    • pp.693-701
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    • 1998
  • This study presents result of comparison between two other numerical method method of char-acteristics(MOC) and Lax-Wendroff method(LWM) applied at wave action analysis of intake and exhaust pipe in terms of calculated pressure velocity and emitted noise in the time and the fre-quency domain by means of fast Fourier transform analysis. Particularly FCT(Flux Corrected Transport)scheme is appended to LWM to protest unaceptable overshoots occurring near discon-tinuity. The final conclusion of this study is that MOC should be replaced by a second order finite difference approach because of larger contributions due to high frequency components than the results from the method of characteristics. Clear benefits we can get by change are faster calcula-tion higher accuracy conservation of mass and consistent calculation method.

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The Stability Analysis of Power System Installed Superconducting Fault Current Limiter (고온 초전도 한류기가 설치된 전력 시스템의 안정도 해석)

  • Lee, Seung-Je;Lee, Chan-Ju;Go, Tae-Guk
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.48 no.5
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    • pp.227-232
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    • 1999
  • The stability of Power system installed Hi-Tc Superconducting Fault Current Limiter(SFCL) is analyzed as a process of developing SFCL. For investigation, a simple mimic system(only one generator) is assumed and then the circuit with SFCL in that system is solved for transient performance. In case the SFCL is installed in the power system, it protected synchronization more effectively both in symmetrical 3-phase fault and single phase line to ground fault in that the machine remains in synchronism for the more time than of without superconducting fault current limiter. It shows that the superconducting fault current limiter not only limits fault current but also protest synchronism. So for design of this SFCL, its synchronism protection property must be considered.

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Reconceptualizing Online Free Spaces: A Case Study of the Sunflower Movement

  • Au, Anson
    • Journal of Contemporary Eastern Asia
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    • v.15 no.2
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    • pp.145-161
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    • 2016
  • Using the Sunflower movement as a case study, this article seeks to articulate a theoretical framework to evaluate online "free spaces" as tools for political mobilization. To this end, this article conducts a thematic and content analysis of 151 posts on the official Facebook page of the Sunflower movement. Key results uncover four thematic functions among posts - expressive, informative, informative-support, and promotional - that overlap, in which the expressive theme prevails, and two thematic topics discussed by posts - damages by protesters and their ideology of freedom. I conclude that: (1) combining the logistic and thematic dimensions of posts enables a specific understanding of an online free space's political viability and anticipates the campaigns it will connect itself to; (2) the networked nature of the Sunflower movement page prompts the reconceptualization of (i) online free spaces as nodes through which various political campaigns and struggles are thematically connected by a political ideology; (ii) inactivity as a strategy where protest capital and followers accumulate to prepare and empower future mobilizations.

The Meaning of Hair Style in Modern Fashion Design -In aspects of gender and cultural/political standpoint- (현대 패션에서 헤어스타일 지니는 의미 -젠더와 문화정치적 관점을 중심으로 -)

  • 권기영
    • Journal of the Korean Society of Clothing and Textiles
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    • v.28 no.8
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    • pp.1100-1111
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    • 2004
  • The purpose of this study is to investigate the hair in aspects of gender and cultural/political ideology, and to confirm the meanings of hair style in modem fashion. There are three zones of social significance such as head hair, facial hair, and body hair, and each of theses zones has both gender and ideological significance. In aspects of gender, opposite sexes have opposite hair norms. And, in sociocultural standpoint, hair is a political symbol of the main protest movements in culture. The contemporary hair styles in fashion design mean that the 'paying' with gender identity, the reflection of changing sexuality, the non-politicism, the fragmentation of style, and the naturalness.

Virtual Reality Presentation of Moment Tensor Analysis by SiGMA

  • Ohtsu, Masayasu;Shigeishi, Mitsuhiro
    • Journal of the Korean Society for Nondestructive Testing
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    • v.23 no.3
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    • pp.189-197
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    • 2003
  • Nucleation of a crack is readily defected by acoustic emission (AE) method. One powerful technique for AE waveform analysis has been developed as SiGMh (Simplified Greens functions for Moment tensor Analysis), as crack kinematics of locations, types and orientations are quantitatively determined. Because these kinematical outcomes are obtained as three-dimensional (3-D) locations and vectors, 3-D visualization is definitely desirable. To this end, the visualization system has been developed by using VRML (Virtual Reality Modeling Language). As an application, failure protest of a reinforced concrete beam is discussed.

Electoral Reform Movement in Malaysia : Emergence, Protest, and Reform

  • Khoo, Ying Hooi
    • SUVANNABHUMI
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    • v.6 no.2
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    • pp.85-106
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    • 2014
  • Protests are not new in Malaysia, though it is restricted by the ruling government. The trend of street protests and demonstrations since the emergence of Coalition for Clean and Fair Elections (Bersih), Malaysia's first people movement on electoral reform, has triggered a sentiment of people power among Malaysian citizens. With protests and popular mobilization becoming pronounced in Malaysian politics, political activism becomes for Malaysians a channel of discontent and expression of political preferences. Using information obtained from interviews with individuals linked to the movement, this paper articulates that protests are no longer exclusive to Malaysians. This paper illustrates the emergence of the Bersih movement and explores the three Bersih mass rallies that took place in 2007, 2011, and 2012. This paper further links the protests with the electoral reform initiatives. It argues that the Bersih movement has managed to lobby fundamental changes in the Malaysian political culture.

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Issues in Applying CV Methods to the Preliminary Feasibility Test (예비타당성조사 적용 CVM의 분석체계와 개선과제)

  • Eom, Young Sook;Kwon, Oh-Sang;Shin, Youngchul
    • Environmental and Resource Economics Review
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    • v.20 no.3
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    • pp.595-628
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    • 2011
  • This study investigates the issues and suggests reform measures in applying CV methods to the Korea Development Institute's (KDI's) Preliminary Feasibility Test (PFT) of public projects. Most public projects on culture, science and environment evaluated under the PFT system belong to the category of "nonstandard" projects whose outputs are non-marketed, and CV is currently the main tool used for their benefit estimation. A careful discussion and investigation is recommended for the selection of target population, payment vehicle, and number of payment times. Operating expert reviews, focus group interviews, and pre-tests is highly recommended to reduce the potential bias involved in the CV studies. A single or double bounded dichotomous choice format is the most popular design of questionnaire, but we identify several undissolved issues in designing and implementing the format. Some other forms of inducing WTPs may still deserve our consideration. Various specifications of the WTP function need to be tried and tested based on their stability, in particular. Employing a nonparametric approach is also recommended. Treatments of 0 or negative WTPs and protest bids are shown to be the most serious issues that affect the estimation results significantly. We review diverse measures of handling those issues and summarize their advantages and shortcomings.

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Socialist Pop After Cultural Revolution (문화혁명기 이후의 중국의 사회주의 팝아트)

  • Park, Se-Youn
    • The Journal of Art Theory & Practice
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    • no.6
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    • pp.27-50
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    • 2008
  • This thesis examines contemporary Chinese painting after the Cultural Revolution(1966~76), focusing upon so-called "Chinese Pop art", which I termed as "Socialist Pop art". I considered the art of this period within the broader context of social changes especially after the Tienanmen incident of 1989. After the Cultural Revolution during which idolization of Chairman Mao was at its peak, one of the major changes in communist China was that an anti-Mao wave was generated in almost every social class. For example, novels that revealed the hardships during the Cultural Revolution were published. Posters that openly criticized the Maoism were also produced and displayed on the walls, and demand for democracy spurred widespread activist movements among young generations. These broad social changes were also reflected in art. A variety of art movements were introduced from the West to China, and after a period of experimentation with the new imported styles, artists began to apply the new artistic idiom to their works in order to visualize their own social and political realities they lived in. It was a shift from earlier Socialist Realism to a new expression either directly or indirectly, "Socialist Pop", an amalgam of Socialist Realism and Pop art tradition. After the 1989 crackdown of Tienanmen Square protest, when communist government quelled with brutal measures the students, workers, and ordinary people who rose for democracy, greater urge to protest the Deng Xiaoping regime emerged. This time coincided with the gradual emergence of art using Pop art vocabulary to satirize the social reality, the Socialist Pop art, along with many other art forms all with avant-garde spirit. One of the most frequent subjects of Chinese Pop art was visual images of Chairman Mao and his Cultural Revolution, and new China that was saturated with capitalism, which tainted the Chinese way of life with a Western way of consumerism and commercialism. The reason for the popularity of Mao's image was spurred by the "Mao Craze" in the early 1990's. People suddenly began to fall in a kind of nostalgia for the past, and once again, Mao Zedong was idolized as an entity who can heal the problems of modern China who had been marching towards their ultimate destination, the economic development. But this time Chairman Mao was no more an idol but just a popular, commercial product. He is no more an object of worship of almost religious nature but he has become an iconography symbolizing the complex nature of present Chinese society. During this process of depicting the social reality, Chinese artists are making the authority and sanctity of Maoism ineffective. Dealing with this new trend of contemporary Chinese art in view of "Socialist Pop art" two manners of re-creating Pop art can be illustrated: one that incorporates the propaganda posters of the Cultural Revolution; the other borrows from Chinese traditional popular imagery or mass media, such as photos taken during Mao era. What is worth mentioning is that these posters and photos of the Cultural Revolution can be identified as 'popular' media, as they were directed to educate the popular mass, thus combination of this ingenuous pop media with Western Pop art can be fully justified as a genre unique to China. Through this genre, we can discover a new chapter of the Chinese contemporary painting and its society, as their Pop art can be considered as self-portraits true to their present appearances.

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The Solidarity Networking between Labor and Civil Society Movements: the Case Study of Hope Bus (시민사회의 연대운동 네트워킹 사례연구: 희망버스를 중심으로)

  • Lee, Byoung-Hoon;Kim, Jindu
    • Korean Journal of Labor Studies
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    • v.23 no.2
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    • pp.109-139
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    • 2017
  • In light that solidarity movements become significant under the situation of 'labor and labor movement' crisis, our study pays attention to the fact that the Hope Bus campaigns made remarkable achievements, and aims to figure out how those campaigns were successful, by focusing on their solidarity networking. The successful operating conditions of solidarity networking in the Hope Bus campaigns are examined in three aspects - the conditions of triggering, forming, and activating. The solidarity networking of Hope Bus campaigns were mainly triggered by the injustice of layoffs by Hanjin Heavy Industry, aerial protest by Jin-sook Kim, and the tragic symbol of the protest site (Crane no. 85). The solidarity movement of Hope Bus could be formed by the mutual trust and cohesive team-building of key network brokers, their utilization and expansion of social movement networks, and massive ripple effect of SNS-mediated communication. The solidarity networking of Hope Bus was effectively activated by open and de-hierarchical operations of the central planning group, active solidarity activities of participant groups, and the provision of 'heuristic experience' for developing the sensibility to labor solidarity. The virtuous combination of those three operating conditions leads to the building of unified forces among social movements, massive civil participation, and meaningful movement outcomes, through the solidarity networking of Hope Bus campaigns.