신자유주의와 경제민주화 : 동아시아 경제위기 담론의 효과

류석진(Seok-Jin LEW),정재환(Jaehwan JUNG) 신아시아연구소(구 신아세아질서연구회) 2015 신아세아 Vol.22 No.2

이 논문은 1997년 동아시아 금융위기에 대한 지배적인 해석이 현재 한국의 경제민주화 논쟁에 지속적으로 미치고 있는 영향에 대해 분석하고자 한다. 동아시아 금융위기에 대한 담론적 구성 과정에서 김대중 정부는 국제통화기금(International Monetary Fund)의 정실 자본주의(crony capitalism) 논의에 기초하여 신자유주의적 경제구조조정과 민주화를 성공적으로 결합시켰다. 김대중 대통령의 담론은 신자유주의적 경제제도변화를 “민주주의와 시장경제의 동행 발전”이라는 이름으로 정당화했고, 이를 통해 그 이후에 한국에서 경제민주화를 이해하는 방식에 지대한 영향을 미쳤다. This paper examines the lingering influence of the dominant interpretation of the Asian financial crisis on the debates on economic democratization. In the process of the discursive construction of the Asian financial crisis, based on the crony capitalism argument of the International Monetary Fund, the Kim Dae Jung government succeeded in associating neoliberal economic restructuring with democratization. President Kim Dae Jung’s discourse justified neoliberal economic institutional change in the name of the parallel development of democracy and the market economy, significantly influencing the way economic democratization has been understood in Korea.

Perceived Innovation Attributes and Acceptance of Chatbots as Determined by Consumer Characteristics

Jaehwan JUNG,Sangwoon BYUN,Mi-Sook KIM 한국유통과학회 2019 The Journal of Industrial Distribution & Business( Vol.10 No.7

Purpose - The purpose of this study was to explore the impact of chatbots’ innovation attributes on the innovation acceptance for consumers who have used chatbots to purchase fashion products that account for a large share of transactions in mobile shopping. Research design, data, and methodology – Data were collected from Korean consumers aged 20 to 49 who had experience using chatbots when purchasing fashion-related products via mobile circumstances. After a pilot survey of 31 customers, pre-questionnaire was revised for the final test, and the final questionnaire was distributed to 1,500 subjects. Out of these, 244 were retrieved. After excluding 48 inappropriate responses, 196 were used for statistical analysis. Frequency analysis, exploratory factor analysis, one-way ANOVA, regression analysis and independent t-test using SPSS 23.0 were employed for data analyses. Results - First, four factors of chatbots’ attributes were extracted: relative advantages and compatibility, complexity, sensibility, and diversity. Second, two factors were extracted for fashion leadership: fashion opinion leadership and fashion innovativeness. Two groups based on the fashion leadership were identified: active innovation adopters and passive innovation adopters. Third, relative advantages and compatibility, diversity, sensibility of innovation attributes were found to have effects on the innovation acceptance in order. Fourth, significant differences were found in sensibility of innovation attributes and innovation acceptance in groups by marital status and age. The married in their 30s and 40s perceived sensibility as a more important attribute of chatbots than the unmarried in their twenties. Among the groups of different income levels, meaningful differences were found in diversity of innovation attributes and innovation acceptance. Fifth, there were significant differences found in relative advantages and compatibility, sensibility of innovation attributes, and acceptance of Innovation among the groups by fashion leadership. Active innovation adopters were found to be more aware of the importance of relative advantages and compatibility, and sensibility of innovation attributes, and innovation acceptance. Conclusions – The present study provides chatbots’ marketing strategies for fashion items need to be modified by demographic characteristics and fashion leadership. Particularly, fashion leadership was found to be an important factor in determining the perception of innovation attribute as well as innovation acceptance.

Multi-Bit Flipping Decoding of LDPC Codes for NAND Storage Systems

Jung, Jaehwan,Park, In-Cheol IEEE 2017 IEEE COMMUNICATIONS LETTERS Vol.21 No.5

<P>This letter presents a new multi-bit flipping decoding algorithm for low-density parity-check codes, which can enhance hard-information-based decoding performance for NAND storage systems. Since the conventional enhancement techniques developed for bit-flipping decoding require soft information, the long latency taken to generate the soft information, makes it hard to apply them to practical NAND storage systems. The proposed algorithm requires only hard information and achieves the better performance than previous hard-information-based algorithms. The proposed method flips multiple bits in each iteration, but the maximum number of bits to be flipped in an iteration is restricted to prevent overcorrection. To relax the hardware complexity of sorting, in addition, an efficient approximation method is proposed, reducing the hardware complexity of a 512-input sorter by 48.3% without degrading the performance noticeably.</P>

Efficient Parallel Architecture for Linear Feedback Shift Registers

Jaehwan Jung,Hoyoung Yoo,Youngjoo Lee,In-Cheol Park IEEE 2015 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS PART 2 E Vol.62 No.11

<P>This brief presents a new parallel architecture for linear feedback shift registers (LFSRs), which can be used to achieve high-throughput Bose-Chaudhuri-Hocquenghem or cyclic redundancy check encoders for storage and communication systems. While previous parallel LFSR architectures have computed values by using the past input messages and the register outputs, the proposed parallel architecture based on the transposed serial LFSR calculates the output by using only the past feedback values. As a result, the proposed architecture reduces the area-time product by up to 59% compared with the recent architecture.</P>

EM-LPC Channel Estimation for OFDM System

Jaehwan Jung,Namkyeom Kim,Insoo Sohn 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7

Accurate estimation of time-selective fading channel is a difficult problem in OFDM (Orthogonal Frequency Division Multiplexing) system. There are many channel estimation algorithms that are very weak in noisy channels. For solving this problem, we use EM (Expectation-Maximization) algorithm for iterative optimization of the data. We propose an EM-LPC algorithm to estimate the time-selective fading. The proposed algorithm improves the BER performance compared to the conventional EM based channel estimation algorithm and reduces the iteration number of the EM loop. We simulated the uncoded system. In coded systems we expect that our EM-LPC algorithm's performance will be enhanced because of the coding gain. The proposed EM-LPC algorithm can be applied to other fields such as medical image processing.

A Strategic-Constructivist Analysis of Korea’s Economic Restructuring after the 1997 Financial Crisis

Jaehwan Jung(정재환) 한국정치학회 2017 한국정치학회보 Vol.51 No.3

본 논문은 제도변화의 전략-구성주의적 접근에 기초하여 1997년 금융위기 이후 한국의 경제구조정에서 담론전략이 제도변화 과정에 미친 영향을 설명하고 있다. 담론전략은 특정한 관점에서 해석된 주요 사건에 대한 담론을 대중들한테 제공함으로써 대중들이 세상을 해석하는 방식에 영향을 주려는 정치적 행위라고 할 수 있다. 정치적 행위자들은 담론전략을 활용하여 집단적 동원을 이끌어내고, 이를 통해 자신들의 정치적 정당성과 권력을 강화하려고 한다. 1997년 금융위기 이후 김대중 정부는 “민주주의와 시장경제의 병행 발전”이라는 구호를 통해 “정실 자본주의” 담론을 민주화와 결합시켜 한국사회에 현지화시키는 데 성공했다. 이를 통해 김대중 정부는 규제적 자유주의 경제구조조정의 정책 정당성을 확보하였고, 이는 정부가 자신의 정책을 다른 행위자들한테 부과하는 능력을 강화시켰다. This article aims to explain the process of Korea’s economic restructuring after the 1997 financial crisis from the perspective of constructivist political economy. In particular, it seek to interpret Korea’s economic restructuring as a strategic-constructivist process of institutional change in which the strategic use of discourse plays an important role by combining strategic constructivism with discursive institutionalism. Discursive strategies are political acts seeking to provide people with the linguistic description of critical events from a particular perspective, thereby affecting the way people understand the world surrounding them. Political actors employ discursive strategies to spur a collective mobilisation and thus to enhance their political legitimacy and power. After the 1997 financial crisis, the Kim Dae Jung government succeeded in localising the crony capitalism argument, especially by associating it with democratisation in the name of “the parallel development of democracy and the market economy,” thereby enhancing the policy legitimacy of regulatory-liberal economic restructuring, which in turn strengthened its power to impose its will on recalcitrant actors.

Numerical study on the effects of intake valve timing on performance of a natural gas-diesel dual-fuel engine and multi-objective Pareto optimization

Jung, Jaehwan,Song, Soonho,Hur, Kwang Beom Pergamon 2017 Applied thermal engineering Vol. No.

<P><B>Abstract</B></P> <P>A natural gas-diesel dual-fuel engine is considered an attractive option for reducing the emissions of a diesel engine while maintaining high thermal efficiency. However, it is important to investigate and optimize the parameters of such an engine in dual-fuel mode. Intake valve timing is a major parameter affecting the air/fuel (A/F) ratio, which is an important factor in dual-fuel combustion characteristics. Here, a numerical study was performed to investigate the fundamentals of dual-fuel combustion and the effects of intake valve closure (IVC) changes in dual-fuel mode using a 1D engine simulation. As the natural gas energy proportion (NGP) increased, brake power decreased and nitrogen oxide (NO<SUB>x</SUB>) emissions decreased because of low combustion efficiency and a lower temperature in the cylinder. At each NGP, a change in IVC could increase combustion efficiency and affect NO<SUB>x</SUB> emissions by controlling the A/F ratio. Additionally, the start of diesel injection (SOI), a major parameter in a dual-fuel engine, and the IVC were selected as independent variables. Latin hypercube sampling (LHS) was used with these variables and a multi-objective Pareto optimization (MOP) was performed to optimize high thermal efficiency and low NO<SUB>x</SUB> emissions. As a result, optimal Pareto solutions were obtained.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The dual-fuel engine was established by using GT-POWER 1D engine simulation. </LI> <LI> The effects of a natural gas-diesel dual-fuel combustion were investigated in a heavy duty engine. </LI> <LI> The effects of IVC were investigated for a natural gas-diesel dual-fuel engine. </LI> <LI> A multi-objective pareto optimization was performed to optimize brake power and NO<SUB>x</SUB> concentration. </LI> </UL> </P>

Professional autonomy, group cohesion, and job complexity affect researchers' organizational commitment

Jung, Jaehwan,Nam, Changi,Lee, Euehun,Kim, Seongcheol SOCIETY FOR PERSONALITY RESEARCH 2016 SOCIAL BEHAVIOR AND PERSONALITY Vol.44 No.8

Macroprudential Ideas and Auxiliary Change in Financial Governance Paradigm

Jaehwan Jung 한국국제정치학회 2018 The Korean Journal of International Studies Vol.16 No.3

발전용 천연가스-디젤 혼소 엔진의 흡기밸브 개폐시기에 따른 연소 및 배출 특성에 대한 수치 해석적 연구

정재환(Jaehwan Jung),송순호(Soonho Song),허광범(Kwang beom Hur) 한국에너지학회 2016 에너지공학 Vol.25 No.2