http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
차량용 에어컨 압축기의 선조질강 헤드 볼트 개발에 대한 연구
김영신(Youngshin Kim),김호겸(Hokyoum Kim),황승용(Seungyong Hwang),김영만(Youngman Kim) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
This paper is a study on the head bolts, used in A/C compressor, for reducing production cost and solving leak problems on the head bolt seat area causing a massive faulty according to production lot intermittently. In this paper, the pre-heat treated steel eliminating heat treatment process after forging was used for the head bolt as material. The preheat treated steel head bolts, 10 % lower than the usual SCM435 head bolts in tensile strength, were selected for this study by considering the results of creeping rupture properties, axial force and stress concentration per tensile strength variation. And then the performance test and the durability test with the A/C compressor assembled with the pre-heat treated steel head bolts were performed and verified. As the results, the pre-heat treated steel head bolts developed in this study showed the cost saving with 7.3 % by eliminating the heat treatment process and logistics process. Additionally, the leak problem on the head bolt seat area in the A/C compressor was improved significantly on the assembly line of mass production.
Kim, Heewon,Kim, Youngshin,Choi, Hyung-Min,Ham, Sunny The Korean Nutrition Society 2018 Nutrition Research and Practice Vol.12 No.4
BACKGROUND/OBJECTIVES: Obesity is a serious concern worldwide, for which the restaurant industry holds partial responsibility. This study was conducted to estimate restaurant consumers' intention to select healthy menu items and to examine the relationships among behavioral beliefs, past behaviors, attitudes and behavioral intentions, which are known to be major determinants of consumer behaviors. SUBJECTS/METHODS: An online, self-administered survey was distributed for data collection. The study sample consisted of customers who reported having visited casual dining restaurants in the last three months at the time of the survey. Structural equation modeling was used to verify the fit of the proposed research model. RESULTS: Structural equation modeling revealed that the proposed model supports the sequential, mediated (indirect) relationships among behavioral beliefs, past behaviors, attitudes and behavioral intentions toward healthy menu selection. CONCLUSION: This study contributes to the available literature regarding obesity by adding past behaviors, one of the most influential variables involved in prediction of future behaviors of consumers, to the TPB model, enabling a better understanding of restaurant consumers' rational decision process regarding healthy menu choices. The results of this study provide practical implications for restaurant practitioners and government agencies regarding ways to promote healthy menus.
The Effect of Regulation on Public Debt from the Perspective of Interest Groups
Youngshin Kim 한국제도경제학회 2019 제도와 경제 Vol.13 No.1
본 논문은 이익집단 관점에서의 규제가 공공부채에 미치는 영향에 대해 이론적·실 증적으로 분석한다. 이익집단의 지대추구활동은 건전한 ‘규제의 질’(regulation quality)을 악화시키거나 공공프로그램의 사회적 최적 수준을 초과하게 함으로써 비효 율과 사회적 비용을 발생시켜 공공부채가 증가하게 한다. 예컨대, 인구의 노령화를 명분으로 공공프로그램의 신설이나 확대를 통해 정치적 이익집단들은 선거에서 노령 자들로부터 표를 얻을 수 있다. 공공프로그램의 신설이나 확대를 위한 재원조달은 일반 대중의 세금으로부터 나오고 공공프로그램 지출을 통한 편익은 이익집단이 볼 수 있기 때문이다. 본 논문에서는 2001-2015년 동안 OECD 30개 국가의 공공부채에 대한 자료를 이용하여 패널분석을 수행한다. 실증분석 결과, 규제의 질적 수준이 낮을 수록 공공부채가 증가하는 것으로 나타난다. 또한 노령자의 인구 비율이 높을수록 공공부채가 증가하는 것으로 나타난다. 본 논문에서는 정치적 지지와 편익을 얻고자 하는 이익집단의 활동으로 공공부채가 무분별하게 증가하기 때문에 적절한 재정준칙 이 필요하다는 시사점을 제공한다. This paper analyzes the theoretical and empirical analysis of the effects of regulation quality on public debt. The rent-seeking activities of interest groups lead to inefficiency and social costs by exacerbating the quality of sound regulation or exceeding the socially optimal level of public programs, thereby increasing public debt. For example, through the creation or expansion of public programs on the aging of the population, political interest groups can get votes from the elderly persons in elections. Financing for the public programs comes from the general public’s tax while benefits from public program spending can be reaped by interest groups. In this paper, panel analysis is conducted using data on public debts of 30 OECD countries during 2001-2015. Empirical results show that the lower regulation quality, the more public debt is increased. The higher the proportion of the elderly population is, the more public debt increases. It is suggested that appropriate fiscal rules should be set since public debt increases indiscriminately as interest groups try to obtain political support and benefits.
An Analysis of the Interaction of Trade and Foreign Direct Investment between South Korea and India
Youngshin Kim,Soon-Cheul Lee 서울대학교 경제연구소 2014 Seoul journal of economics Vol.27 No.1
This paper investigates the interaction of foreign direct investment (FDI) and trade between S. Korea and India from 1983 to 2012. To examine the relationship between trade and FDI, we established multivariate estimations for trade and FDI, including Gross National Income and effective exchange rate. We applied impulse response analysis using the Vector Error Correction Model to determine the effect of a shock emanating from an endogenous variable on other variables. One finding is that a unidirectional link exists between trade and FDI, but not vice versa. The export of S. Korea to India positively affects the growth of the outward FDI of S. Korea into India. This finding indicated that the relationship between trade and FDI of S. Korea to India is unidirectional. Both trade and FDI also do not affect either the income of the two countries or their effective exchange rate. The main reason for this result is that the amount of FDI and/or trade is considerably small to generate any dynamic spillover effect.