• Journal of the Korea Convergence Society
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• v.10 no.1
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• pp.205-214
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• 2019

In Korea, the first-price sealed bid auction and the constrained mean-price sealed bid auction(buchal-je in Korean) have been used alternatively as procurement auctions. In this paper, we characterize the constrained mean-price sealed bid auction in the context of mechanism design. We consider the general ?-bidder case in which each bidder has private information. Under the assumptions of uniformly distributed valuations and linear strategies, we derive the equilibrium of the constrained mean-price sealed bid auction. Furthermore, we analyze the efficiency and the expected revenue of this auction mechanism in comparison with the first-price sealed bid auction. Finally, we conclude with the critical remarks on the practical intention of the government which uses this auction.

• Journal of the Korea Convergence Society
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• v.10 no.8
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• pp.217-226
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• 2019

This study examines the effect of the wedge between voting rights and cash flow rights of controlling shareholders on the implied cost of equity. Prior studies posit that controlling shareholder's voting rights exceeding cash flow rights causes expropriating minority shareholders. Using date from 793 group-affiliated Korean firms for 10 years from 2005 to 2016, the result shows that there is a positive and significant relationship between controlling shareholders' wedge and implied cost of equity. This result implies that investors regard the controlling shareholders' wedge as potential agency cost in which they require additional risk premium because controlling shareholders have a strong incentive to pursue their private interests trough tunneling practices.

• The Journal of the Korea Contents Association
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• v.19 no.4
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• pp.394-402
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• 2019

This study examines the effect of managerial ownership on the value of firms' cash holdings. According to the management entrenchment hypothesis, managers have incentives to make decisions that can undermine shareholders' value for their own private interests. In this situation, as the managerial ownership increases, investors may evaluate that the cash held by the company may be utilized inefficiently and the value of the cash holdings may decrease. On the other hand, based on the incentive alignment hypothesis, the value of cash holdings may increase as investors perceive cash holdings to be effectively used to increase corporate value as managers' interests are in agreement with shareholders. Empirical results show that the value of cash holdings decreased as managerial ownership increased. This study finds a contribution in that it presents empirical evidence on whether the cash held by the company is differentially evaluated according to the level of the managerial ownership.

• Journal of IKEEE
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• v.23 no.2
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• pp.508-516
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• 2019

Smart home with various IoT devices provides convenient and efficient services. However, security is important because sensitive information such as private video and audio can be collected and processed, as well as shared over the Internet. To manage such smart home IoT devices, we use blockchain technology that provides data integrity and secure management. In this paper, we utilize a PoS(Proof of Stake) method that verifies the block through the accumulated stake in the network rather than the computation power, out of the PoW(Proof of Work) block chain, in which the computation for the existing verification must be continuously performed. Among them, we propose a blockchain based system with DPoS(Delegated Proof of Stake) method to actively solve the scalability part, for security that is suitable for smart home IoT environment. We implement the proposed system with DPoS based EOSIO to show realization, and we show performance improvement in terms of transaction processing speed.

• The Journal of the Korea Contents Association
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• v.19 no.10
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• pp.126-136
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• 2019

The film born by Lumiere brothers in 1895 was not the first. Edison, who invented the Kinetograph four years ago, has already made dozens of films. But it has been relatively undervalued. That's because the platform for projecting a movie was through a single person viewer called Kinetoscope. However, the physical characteristics of the film itself are the same as those of modern films, and have a unique aesthetic distinction compared to other early films. The subject is entertainment-oriented, and the image is characterized by contrast effect. In addition, even before the birth of the film, it shows the important creative elements and genres pursued by fictional films, and has industrial production systems and experts. If Lumiere's film is the beginning of a documentary film that portrays the fact, Edison's film deserves historical value as the beginning of popular film, which is the hallmark of modern cinema.

• The Journal of the Korea Contents Association
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• v.21 no.2
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• pp.421-430
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• 2021

It is necessary to pay attention to the appearance of word-initial glottalization among social classes. The higher the academic ability, the more formal it is, the more likely it is to avoid word-initial glottalization due to the psychological factors that are close to the English pronunciation. The purpose of this study is to prove and clarify this through experimental research and the Praat voice analysis program. In previous discussions on word-initial glottalization, there have been various discussions such as strengthening expressions, the conclusion of competition of modern society, Korean historical analysis, differences in Korean and English phonetics, and attempts to regularize the pronunciation of loanwords. In this paper, it was revealed that the higher the academic ability, the weaker the pronunciation of loanwords word-initial glottalization appears in formal and formal situations, by using experimental research and voice analysis program Praat. The presence or absence of pronunciation of the initial specification of loanwords acts as a psychological base for expressing one's status and hierarchy.

• (The)Study of the Eastern Classic
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• no.41
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• pp.303-331
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• 2010

The theme, 'Good Life', is one of the most classical questions all over the oriental and European societies in the history of politic ideas. Confucius (BC. 551 ~ BC. 479), a philosopher representing oriental ideas, also sought 'Good World' by proposing new world, and such 'Good World' cannot be separated from 'Good Life', which is 'Happy Life', so that his foundation of Confucius School means that he dreamt of 'Confucianism based Happiness' in another words. This study is aimed to look into Confucius' viewpoint of happiness using Analects that best shows his ideas, words and behaviors. In the Chapter 2, I checked good life and happy life dealt in the ancient European societies to get a general cognition of them. Then, I looked into the details written in the Chapter 1 Introduction, Section 1 'HakEe(學而)', Analects, in which Confucius thought that the genuine happiness of human was the process toward internal joy from learning, external joy from communicating with society and humanistic human that was the completion of oneself, which I used as the keys for this study. In the Chapter 3, 4 and 5, therefore, I investigated how such keys shown in the Chapter 1 of the Section 'HakEe' were achieved all through Analects.

• The Journal of the Korea Contents Association
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• v.20 no.12
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• pp.103-111
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• 2020

This article selected a feature film (1993) of Ken Loach who is widely known as 'Socialist Realism Film' director and attempted to explore the thesis of everyday (life) and alienation in daily space. To this end, major theories related to everyday life, dailiness, social space, daily space, alienation, and especially Henri Lefevre's discussions were used as the theoretical background and research methodology. According to the results, director Ken Loach presents the possibility of transformation of everyday life by criticizing the ills of capitalism that occur in public social spaces such as vacant lots and parking lots in and private daily spaces such as homes. It also emphasizes the reality that the alienation of the working class, which has no choice but to be exposed 'stone rain', is taken for granted and the paradox that the alienation from such reality can be achieved in everyday life. These research findings can be said to mean that the social space of everyday life is the basis for changing the dailiness of everyday life.

• The Journal of the Korea Contents Association
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• v.21 no.6
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• pp.480-493
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• 2021

In this paper, we attempt to empirically explain the process by which fandom performs social participation using digital media. To do this, we utilize the concept of identification and the Situational Theory of Publics in a theoretical framework, and study ARMY, BTS fandom. We confirmed a positive association between communication behavior and social participation, and verified a mediating effect of the identification as well. Interestingly, horizontal identification, a fan-to-star friendly relationship, had a greater effect on moving toward social participation than did vertical identification, a fan's blind worship of a star. This study has significance in that it has figured out the relationship of personal feelings to public participation by mobilizing achievements in various research fields.

• The Journal of the Korea Contents Association
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• v.21 no.2
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• pp.528-537
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• 2021

This thesis aims to analyze the possibility of the self-representation style of Korean post-documentaries in the 2000s and analyze the possibilities of the visual writing. First of all, this study examined the theoretical background of the documentary, and derived the theoretical concepts from the poetic style and the performance style presented by Bill Nichols, and divided the strategies of self-representation in the post documentary into three categories. The three strategies of self-representation were to discuss the possibility of self-representation through the analysis of works through self-representation as self-emotion, self-representation as body, and self-visual representation. In the process of this discussion, I will examine how self-representation style deconstructs the existing visual system consisting of the system of the power and functions as a alternative visual writing that can appear various women and minorities.