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Soybean Phytosterols가 첨가된 마요네즈의 품질특성
최용재,김금란,김태운,김광수,김해영,Choi, Yong-Jae,Kim, Gum-Ran,Kim, Tae-Woon,Kim, Kwang-Soo,Kim, Hae-Yeong 한국응용생명화학회 2003 한국농화학회지 Vol.46 No.1
Soybean phytosterols have been known to have the effect of reducing the amount of cholesterol in blood. We isolated and analyzed soybean phytosterols from soybean scum. The functional mayonnaise was prepared by the addition of the different amounts of soybean phytosterols. To determine the desirable level of soybean phytosterols in mayonnaise, solubility, viscosity, the stability of emulsion and the sensory evaluation were measured. The most desirable level of soybean phytosterols was 0.5% in solubility, viscosity, stability of emulsion and the sensory evaluation. Soybean phytosterols는 혈중 콜레스테롤 수치를 낮추는 효과를 지닌 것으로 알려져 있다. 이를 이용한 기능성 마요네즈 제조를 위하며 대두 scum으로부터 soybean phytosterols를 분리한 후 여러 농도로 마요네즈에 첨가하였다. Soybean Phytosterols 첨가가 마요네즈의 품질에 미치는 영향을 살펴보기 위하여 용해성, 점도, 유화안정성, 관능평가를 통하여 soybean phytosterol의 마요네즈 적정 첨가량을 조사하였다. 마요네즈 제조시 가장 바람직한 soybean phytosterol의 첨가량은 용해성, 점도, 유화 안정성과 관능평가에서 0.5% 첨가가 가장 바람직한 것으로 평가되었다.
최용재 ( Yong-jae Choi ) 국제지역학회 2018 국제지역연구 Vol.22 No.3
본 연구는 BS(Balassa-Samuelson)효과가 장기 실질환율 변화를 설명할 수 있는지를 실증적으로 분석하는 데 있다. 이를 위해 1995년부터 2015년까지 OECD 25개 회원국(기준국 미국 제외)을 대상으로 패널자료를 구축하고 단위근 및 공적분검정을 통해 자료의 안정성을 검토하여 공적분 관계가 존재할 경우 추정모형을 설정하여 장기균형식을 추정하였다. 관련 변수들에 대한 패널 단위근 및 공적분검정을 실시한 결과 실질환율을 제외한 모든 변수들이 단위근을 가지고 있어 불안정적 시계열로 나타났으며 관련 변수들 간에 공적분 관계 즉 안정적인 균형관계가 존재하는 것으로 분석되었다. 동태최소자승법(Dynamic Ordinary Least Square, 이하 DOLS) 및 오차수정모형(Error-Correction Model, 이하 ECM)을 이용해 장기균 형식을 추정한 결과 대체로 이론에서 예측하는 BS효과를 얻었으나 그 효과는 크지 않은 것으로 분석되었다. 특히 노동생산성이 실질환율에 직접 미치는 효과는 작았거나 통계적으로 유의하지 않았다. 그러나 교역재에 대한 비교역재 상대가격은 통계적으로 유의하게 실질환율에 영향을 미쳤으며 이론이 예측하는 바와 동일했다. 상대노동생산성이 상대가격에 미치는 효과는 분명하지 않았다. 한편 교역조건을 설명변수에 포함하여 추정한 결과 이론에서 예측하는 바와 동일한 결과를 얻었으며 모두 통계적으로 유의한 수준에서 교역조건이 실질환율 변화를 설명하는 데 중요한 변수라는 결과를 도출했다. The purpose of this paper is to investigate the Balassa-Samuelson effect that real exchange rate could deviate from its long-run equilibrium. To analyze this effect, I estimated the long-run relationship between real exchange and productivity using the dynamic panel ordinary least square(DOLS) and panel error correction model(ECM) after conducting the unit root and cointegration test. The results show that all variables except for the real exchange rate have the unit root. Then I conducted the cointegration test to find out whether there exist the stable long-run relationships. The results show that the variables are cointegrated and significant statistically. The DOLS and ECM methods are used to estimate the coefficient of the cointegrated variables. The major finding are that the estimates are statistically significant and that they show the same sign as the economic theory predicts.
최용재 ( Choi Yong Jae ),최찬욱 ( Choi Chan Ouk ),김연수 ( Kim Youn Soo ) 창조교육학회 2020 창조교육논총 Vol.22 No.-
This research includes the topic of the increase of new sports function through the application of sports education program model for dynamic development of creativity and the following effects of the program for 100 female high school students for one year. 1. By reorganising and operating sports events with the application of creative sports education model according to the specific situations of a school, students could have broader options and learn new sports as a cultural style, which can make them feel interest and achievement, and escape from the fragmentary physical education classes. 2. New sports events as the flow of class centered on competitions could provide a basis for the chances of the understanding of the rules of a game, improvement of team-work, performance of a division of roles, strategy establishment of the performance of a sports game, and social realisation of sports. 3. By providing new sports events, which can be enjoyed by only knowing basic functions and game rules, for female students who are usually not good at group ball games, learners could raise the ability to plan the next game model and perform it, and the events could provide the activation basis of joyful school physical education. 4. The basis of lifelong physical education could be provided by increasing the basic function of new sports and the function of being able to play a game, through voluntary participation in after school activities and development activities.
최용재(Yong-Jae Choi) 한국무역연구원 2013 무역연구 Vol.9 No.3
The purpose of this paper is to investigate the extent of exchange rate pass-through on export prices in terms of buyer's currency in Korea manufacturing. To do this, I used the panel data model consisting of 30 industries. The evidence shows that there is imperfect exchange pass-through which is -0.25 to -0.49 across estimation models. In addition, there exists the indirect effect of exchange on export prices through the cost change due to changing exchange rate. Finally, the result shows that in the period of appreciation, the degree of exchange rate pass-through is less weak.
최용재(Yong-Jae Choi) 한국무역연구원 2021 무역연구 Vol.17 No.5
Purpose - This paper investigates the relationship between productivity and real exchange rate, the Balassa-Samuelson effect of tradable sector technology shocks on the real exchange rate using a DSGE model. Design/Methodology/Approach - To do this, I have set up a two sector-tradable and nontradable sectors-and a small open economy model with price rigidity. After constructing the model, the structural parameters were calibrated and estimated using historical data and the Bayesian method. The impulse response function was analyzed to determine whether there exists a relationship between productivity and real exchange rate. Findings - As a result of the simulation, after the technology shock hit in the tradable sector, the impulse response function dynamics show the decreasing real exchange rate dynamics that correspond to the theoretical expectation. This implies that there exists a relationship between productivity and the real exchange rate in the Korean economy. Second, analysis of the nontradable sector technology shock suggests that when the consumer piece level inflation decreases, the output increases while the real exchange rate increases. The model’s robustness is verified by the stable dynamics in terms of monetary shock. Research Implications - The results suggest that the New Keynesian model can help to generate the plausible dynamics in a sense that the volatility and persistence of real exchange rate are close to the that of data.
최용재(Yong-Jae Choi) 한국관세학회 2013 관세학회지 Vol.14 No.4
The purpose of this paper is to investigate the extent of exchange rate pass-through on import prices in terms of buyer’s currency in Korea. To do this, I used the panel data model consisting of 29 industries. The evidence shows that there is the imperfect exchange pass-through which is 0.37 to 1.04 across estimation models. In addition, there exists the indirect effect of exchange on import prices through the cost change due to changing exchange rate. Finally, I tried to examine whether there is difference between the period of depreciation and appreciation of exchange rate. However, I could not find the strong relationship between exchange rate and the each period even if there is weak impact of exchange on import prices in the period of depreciation.