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Chungsik Yu(Chungsik Yu) J-INSTITUTE 2022 Regulations Vol.7 No.2
Purpose: The purpose of this study aims to find the way in which policy implementation structure is established to support social enterprise applicants. Together with it, the study proposes the social innovative measures of the social enterprise certification program based on bureaucratic administration through the discovery of social val-ues. Methods: The article examines public data on social enterprise certification from 2007 to 2022 and interviews with the stakeholders in social enterprise by utilizing Enroljas’ mimetic institutional isomorphism that focuses on the system, actors, and the interaction among actors as variables. Chapter 2 discusses social enterprise, admin-istrative decentralization, social value and social innovation. Chapter 3 conducts an institutional analysis of the certification support administrative system. Chapter 4 undertakes an institutional analysis of the designation support administrative system. Chapter 5 pinpoints the limitation of the certification in the realization of social value, suggest the social purpose company as innovation, and compares the independent legal entity of social enterprise between Korea, UK and US. Results: The certification and designation system are operated by the dual management mode of administra-tive organization and intermediate organization. The policy implementation structure consist of vertical structure between administrative organizations and horizontal structure between administrative ones and intermediary. The certification system suppresses the realization of the social value of social enterprises and experiences the organizational identification. Conclusion: The independent legal entity of social enterprises is an institutional innovation instead of bureau-cratic certification program. This outcome is confirmed by comparing the institutions of social enterprise legal entities in the United States and the United Kingdom.
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South Korea’s Strategic Culture and China’s National AI STRATEGY: A Neoclassical Realist View
Chungsik Yu J-INSTITUTE 2021 Robotics & AI Ethics Vol.6 No.2
Purpose: South Korea s foreign policy executives need to make security policy choices about China s AI as a security threat with normative nature. The purpose of this article is to identify the ideas of the South Korean security policy executives and to analyze the role of the policy elites’ perception in foreign policymaking about China s artificial intelligence as a newly emerging security challenge. Together with this, it is approached to evaluate the strategic perception of Moon Jae-in s foreign policy executive in connection with China’s artificial intelligence. Method: The article examines the document and speech of the foreign policymakers of Korea and China as well as the media coverage of the two countries by utilizing Kitchen’s neoclassical realism with a focus on the elites’ perception as an intervening variable, international systemic pressure as an independent variable, and foreign policy outcome as a dependent variable. Chapter 2 reviews the strategic culture of a middle power. Chapter 3 finds China’s AI strategy as a systemic threat. Chapter 4 explores the former Korean governments’ strategic ideas for China. Chapter 5 finds Moon Jae-in government’s idea of the China AI strategy. Results: The article reveals the nature of China’s AI, the role of Korea’s strategic culture, and the capacity of policy elites to emerging security. First, China s AI has the nature of systemic pressure. Sec-ond, the foreign policy executives of Korea differently respond to China’s systemic pressure. Third, the Moon Jae-in government’s policy elites have autonomous power against the international systemic pressure and consider the economic interest as important. Conclusion: This article concluded that the foreign policy elites’ perception intervenes between the international systemic pressure and state foreign policy-making. The elites induce the discussion of AI from the view of middle power multilateralism rather than that of AI from the view of ethical and geopolitical context. The article also says that Korea s foreign policy elites can operationalize the ideas in considering the balance of interest with China.
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Load Carrying Characteristics of a Surcharge-Loaded Tiered Segmental Retaining wall
Chungsik yoo,Sun-Bin Kim,Jae-Wang Kim 한국토목섬유학회 2008 한국토목섬유학회 학술발표회 Vol.2008 No.11
The load carrying characteristics of a two-tier geosynthetic-reinforced segmental retaining wall (GR-SRW) under a surcharge load was investigated in this study. A 3D finite element analysis was conducted on a 5.6-m-high two tier segmental retaining wall subject to a surcharge load well in excess of working load aiming at investigating the load carrying capacity of the tiered GR-SRW. The results of the analysis were examined in terms of the surcharge load induced wall performance. Demonstrated in this study was that a GR-SRW in tiered configuration has an excellent load carrying capacity. showing no sign of instability up to the maximum applied surcharge pressure of 1500 kPa. Practical implications of the findings are discussed.
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Welding Fume and Others from Welding Processes
Chungsik Yoon 한국환경보건학회 2004 한국환경보건학회지 Vol.30 No.4
A number of health hazards are generated in welding processes. In this paper, the characteristics of fumes and some other hazardous agents in welding are reviewed. Fumes in welding are generated by complex mechanism like physical ejection of particles, oxidation-enhanced vaporization, vaporization-condensation-oxidation, and spatter contribution. Fume generation rates could be described as a power function in a given process. Most of fume constituents was originated from consumables rather than base metal. The mass distribution for the welding fumes is unimodal and very small to penetrate respiratory system. So, almost fractions of fumes are classified into the respirable particulate mass. Total chromium contents in FCAW were similar to those from SMAW whereas hexavalent chromium concentrations in fume were similar to those produced from MIG welding fume. Hexavalent chromium was mostly soluble which was similar to the characteristic solubility of fume hexavalent chromium from SMAW.
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ChungSik Lim,Kwangsoo Park,Changkyu Kim,HaeWoong Kim,Hoseok Nam 한국방사성폐기물학회 2023 한국방사성폐기물학회 학술논문요약집 Vol.21 No.2
Kori Unit 1 nuclear power plant is a pressurized water reactor type with an output of 587 Mwe, which was permanently shut down on June 18, 2017. Currently, the final decommissioning plan (FDP) has been submitted and review is in progress. Once the FDP is approved, it is expected that dismantling will begin with the secondary system, and dismantling work on the primary system of Kori Unit 1 will begin after the spent nuclear fuel is taken out. It is expected that the space where the secondary system has been dismantled can be used as a temporary storage place, and the entire dismantling schedule is expected to proceed without delay. The main equipment of the secondary system is large and heavy. The rotating parts is connected to a single axis with a length of about 40 meters, and is complexly installed over three floors, making accessibility very difficult. A large pipe several kilometers long that supplies various fluids to the secondary system is installed hanging from the ceiling using a hanger between the main devices, and the outer diameter of the pipe is wrapped with insulation material to keep warm. In nuclear secondary system decommissioning, it is very important to check for radiation contamination, establish and implement countermeasures, and predict and manage safety and environmental risks that may occur when cutting and dismantling large heavy objects. So we plan to evaluate the radiation contamination characteristics of the secondary system using ISOCS (In- Situ Object Counting System) to check for possible radioactive contamination. According to the characteristics results, decommissioning plans and methods for safe dismantling by workers were studied. In addition, we conducted research on how to safely dismantle the secondary system in terms of industrial safety, such as asbestos, cutting and handling of heavy materials and so on. This study proposes a safe decommissioning method for various risks that may occur when dismantling the secondary system of Kori Unit 1 nuclear power plant.
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Variation of Pull-out Resistance of Geogrid with Degree of Saturation of Soil
Chungsik Yoo,TABISH ALI 한국지반신소재학회 2020 한국지반신소재학회 논문집 Vol.19 No.1
This paper presents the results of experimental investigation on the effect of degree of saturation of soil on the pullout behavior of a geogrid. Different test variables were taken into account while performing the experiment including the soil physical conditions based on water content and external loading applied. The soil used was locally available weathered granite soil. The tests included variations in saturation of about 90%, 80%, 70% and 45% (optimum moisture content). The pullout tests were performed according to ASTM standard D 6706-01. The results indicate that increasing the degree of saturation in the soil decreases the pull-out capacity, which in turn decreases the interface friction angle and interaction coefficient. The decrease in the pullout interface coefficient was observed to be around 12.50% to 33.33% depending on the normal load and degree of saturation of the soil. The test results demonstrated the detrimental effect of increasing the degree of saturation within the reinforce soil on the pullout behavior of reinforcement, thus on the internal stability. The practical inferences of the outcomes are analyzed in detail.
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Chungsik Yu J-INSTITUTE 2022 Regulations Vol.7 No.1
Purpose: The purpose of this article is to compare institutional arrangements between precedent social enterprises with a focus on the change of third sector organizations. Along with this, it is also to give an implication for a latecomer that insufficiently institutionalized social enterprise from the side of precedent countries of social enterprise. Method: The article reviews the policy documents and legal data of the governments and public organizations involving the UK, the US, and South Korea as well as China by applying Krasner’s model of punctuated equilibrium that gives attention to macro, meso, and micro institutions. Chapter 2 explores the paths and types of social enterprise. Chapter 3 discusses the economic environment and regime change, the legalization and legal entity, and the support system and support measure of social enterprise. Chapter 4 discusses the comparison of the in-fluence of multi-leveled institutions. Chapter 5 discusses an implication for a latecomer of social enterprise, China. Results: The article finds the influence of institution on social enterprise and an implication for a latecomer. First, the welfare liberal state with voluntary sector tradition forms the social enterprise as a separate legal entity as the state experiences an economic recession and low employment. Second, the welfare liberal state with non-profit sector tradition makes social enterprise a separable legal entity as the state undergoes economic recession and high employment. Third, the statism-centered state with an underdeveloped third sector forms social enterprise as an inseparable legal entity as the state goes through an economic recession and low employment. China as a latecomer puts together the cases of the precedent nations for its institution-building. Conclusion: This article concludes that the third sector development and character plays a critical role in form-ing social enterprise when state and market address external shock and internal conflict. Institutions tend to per-sist, but the social enterprise is formed as the existing third sector organization encounters an exogenous variable and is mediated by state and market.
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