• The Korean Journal of Financial Management
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• v.17 no.1
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• pp.137-159
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• 2000

재무경제학에서 많은 연구들이 주식가격과 거시경제활동과의 이론적 모형을 설정하고 이를 점증하고자 하였다. 이 분야에서 지금까지 주로 ARMAX 모형이나 VAR 모형들이 사용되어 왔으나, 이러한 방법들은 주식가격과 거시경제변수들간의 장기적인 균형관계를 파악할 수 없다는 한계점을 안고 있다. 따라서, 본 연구의 목적은 이러한 한계점을 극복할 수 있는 VECM을 이용하여 우리나라 증권시장과 거시경제변수들간의 장기적인 균형관계를 규명하고자 함에 있다. 검증결과, 모든 변수들의 시계열이 불안정적인 것으로 확인된 관계로, 다변량시계열의 공적분 관계를 검증하는 Johansen 검증을 VECM 모형의 구조 안에서 실시하였다. 종합주가지수와 거시경제변수들간에는 장기적 안정관계를 나타내는 공적분관계가 있는 것으로 나타났으며, 종합주가지수와 거시경제변수들간의 관계는 대부분 이론적인 관계에서 예상하는 부호와 동일한 부호를 갖으며 통계적으로도 유의하였다. 그리고, VECM의 설명력이 종래에 주로 사용하였던 VAR 모형의 설명력보다 더 우월하게 나타났다.

• Environmental and Resource Economics Review
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• v.8 no.2
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• pp.245-269
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• 1999

향후 기후변화협약과 같은 환경규제의 강화가 예견되는 상황에서 에너지산업은 상당한 정책변화를 겪게 될 것으로 예상된다. 이러한 정책수립과 결정과정에서 본 연구는 천연가스산업에 대한 정책변화 효과를 분석할 수 있는 일반균형 분석모형을 제시함으로써 천연가스산업에 관한 유용한 정보를 제공할 수 있을 것으로 기대된다. 소국경제를 가정한 연산가능 일반균형모형(CGE)을 통해 분석된 천연가스산업의 거시경제적 파급효과를 살펴보면 다음과 같다. 먼저, 천연가스 가격이 5% 상승하였을 경우에는 실질GDP가 0.031% 감소하고, 생산자 물가지수는 0.051% 상승하였다. 가계수요가 10% 증가한 경우와 투자가 10% 증가한 경우에는 실질 GDP가 각각 0.002%씩 상승하고 생산자 물가지수는 0.008%와 0.004% 상승하는 것으로 나타났다. 이러한 분석결과는 천연가스산업이 비교적 거시경제에 미치는 영향이 적은 것을 보여 주고 있다.

• The Journal of the Korea Contents Association
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• v.17 no.9
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• pp.50-59
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• 2017

The purpose of this study is to analyze the development of regional balance of 16 metropolitan councils in Korea, using an indicator index analysis. In each council, 18 indicators of the year 2015 which reflect regional development have been selected to diagnose the performances of the three sectors: economy, social, and cultural infrastructure. For the index of economic indicators, Gyonggi-do records the highest number of the indicators and followed by Chungnam-do which reaches about 94% of Gyonggi-do. The lowest region is Gwangju Metropolitan City which shows only 57% of Gyonggi-do. In the social sector, Gyonggi-do and Seoul City have high indexes while Gyeongsangbuk-do and Gangwon-do show relatively low indexes. This implies that the national economic and social capitals are concentrated in Gyonggi-do and Seoul City. For the index of cultural infrastructure sector, Jeju-do is the highest council and higher about 58% than that of Gangwon-do which is in the second highest level. In particular, the greatest unbalanced sector among the councils is the cultural infrastructure in which Jeju-do is the five times higher than that of Gyonggi-do and Inchon Metropolitan City. As a result, the cultural infrastructure sectors are particularly concerned in establishing the national policy for the development of regional balance of Korea.

• Journal of Nutrition and Health
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• v.50 no.2
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• pp.142-157
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• 2017

Purpose: The purpose of this study was to develop a nutrition quotient for adolescents (NQ-A) to assess overall dietary quality and food behavior of Korean adolescents. Methods: Development of the NQ-A was undertaken in three steps: item generation, item reduction, and validation. Candidate items of the NQ-A checklist were selected based on literature reviews, results of the fifth Korea National Health and Nutrition Examination Survey data, dietary guidelines for Korean adolescents, expert in-depth interviews, and national nutrition policies and recommendations. A total of 213 middle and high school students participated in a one-day dietary record survey and responded to 41 items in the food behavior checklist. Pearson's correlation coefficients between the responses to the checklist items along with nutritional status of the adolescents were calculated. Item reduction was performed, and 24 items were selected for the nation-wide survey. A total of 1,547 adolescents from 17 cities completed the checklist questionnaire. Exploratory factor and confirmatory factor analyses were performed to develop a final NQ-A model. Results: Nineteen items were finalized as the checklist items for the NQ-A. Checklist items were composed of five factors (balance, diversity, moderation, environment, and practice). The five-factor structure accounted for 47.2% of the total variance. Standardized path coefficients were used as weights of the items. The NQ-A and five-factor scores were calculated based on the obtained weights of the questionnaire items. Conclusion: Nutrition Quotient for adolescents (NQ-A) would be a useful instrument for evaluating dietary quality and food behavior of Korean adolescents. Further research on NQ-A is needed to reflect changes in adolescent's food behavior and environment.

• Journal of Nutrition and Health
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• v.53 no.6
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• pp.629-647
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• 2020

Purpose: This study was undertaken to develop a nutrition quotient for elementary school children (NQ-C) for evaluating the overall dietary quality and eating behaviors. Methods: The NQ-C was developed by implementing 3 stages: item generation, item reduction, and validation. Candidate food behavior checklist (FBC) items of the NQ-C were derived from systematic literature reviews, expert in-depth interviews, statistical analyses of the fifth Korean National Health and Nutrition Examination Survey data, and national nutrition policies and recommendations. For the pilot survey, 260 elementary school students (128 second graders and 132 fifth graders) completed self-administered questionnaires as well as 24-hour dietary intakes, with the help of their parents and survey team staff, if required. Based on the pilot survey results, expert reviews, and priorities of national nutrition policy and recommendations, checklist items were reduced from 41 to 24. A total of 20 items for NQ-C were finally selected from results generated from 1,144 nationwide samples surveyed. Construct validity of the NQ-C was assessed using the confirmatory factor analysis, LInear Structural RELations. Results: Analyses of the exploratory factors of NQ-C identified that 5 dimensions of diet (balance, diversity, moderation, practice and environment) accounted for 46.2% of the total variance. Standardized path coefficients were used as weights of the items. The NQ-C and 5-factor scores of the subjects were calculated using the obtained weights of the FBC items. Conclusion: Our data indicates that NQ-C is a useful and suitable instrument for assessing nutrition adequacy, dietary quality, and eating behaviors of Korean elementary school children.

• KDI Journal of Economic Policy
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• v.11 no.4
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• pp.23-38
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• 1989

본고(本稿)에서는 원화표시수입물가지수(貨表示輸入物價指數) 및 단위노동비용(單位勞動費用) 등의 비용요인(費用要因)과 GNP디플레이터로 표시한 물가(物價)와의 관계를 공적분검증방법(共積分檢證方法)으로 살펴보았는데 단위노동비용(單位勞動費用)과 물가간(物價間)에는 유의한 장기적(長期的) 균형관계(均衡關係)가 존재하나 이 관계식(關係式)에 수입물가지수(輸入物價指數)를 추가하기는 곤란한 것으로 나타났으며 수입물가지수(輸入物價指數)와 물가간(物價間)에도 유의한 장기적(長期的) 균형관계(均衡關係)를 발견하지 못하였다. 이에 따라 공적분(共積分)과 오차수정모형(誤差修正模型)을 사용하여 단위노동비용(單位勞動費用)만으로 인플레식(式)을 추정(推定)한 결과 그 적합도가 뛰어난 것으로 나타났다. 추정결과(推定結果)에 의하면 단위노동비용상승(單位勞動費用上昇)의 물가(物價)에 대한 영향은 영구적이며 최조 2년반 동안에 최대로 나타날 뿐 아니라 과도조정(過度調整)(overshooting)현상(現象)이 있는 것으로 나타났다. 이에 따라 비록 90년도의 임금인상(賃金引上)이 상당폭 둔화(鈍化)된다 하더라도 87년 하반기부터 시작된 단위노동비용급증(單位勞動費用急增)의 누적적 효과로 인하여 90년의 상당히 높은 인플레율은 불가피할 것으로 전망되었다. 마지막으로 이와 같은 물가상승압력(物價上昇壓力)을 완화하기 위해서 정책입안자(政策立案者)의 입장에서 본고(本稿)의 연구결과(硏究結果)에 대해 어떠한 해석이 가능한가를 논의하였는데, 정부(政府)의 정책입안자(政策立案者), 기업가(企業家) 및 근로자(勤勞者) 등 각(各) 경제주체(經濟主體)의 단합된 공동노력(共同努力)이 요구되는 것으로 지적되었다.

• Proceedings of the KIPE Conference
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• 2014.07a
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• pp.221-222
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• 2014

본 논문에서는 3레벨 NPC 인버터의 전원전압변조 방식을 이용하여 넓은 변조 지수에서 제어 가능한 간단한 중성점 제어 방법을 제안하였다. 제안한 제어 방법은 전원 전압 변조방법을 이용한 중성점 균형 계수와 정확한 옵셋 전압의 제한치를 이용하여 계산된다. 중성점 균형 계수는 전류의 극성과 상하 커패시터의 전압에 의해서 정의되어 진다. 제안된 제어 방법은 중성점 제어를 위해 공간전압 PWM과 불연속 PWM까지 동작범위를 확장하여 동작되어 진다. 제안된 방법은 넓은 변조지수에서 전원전압변조를 이용하여 공간전압 PWM방법을 쉽게 구현할 수 있다. 제안된 중성점 제어 방법의 타당성은 시뮬레이션을 통하여 검증하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.12
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• pp.5741-5747
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• 2011

The purpose of this study was to find correlation between the Berg Balance Scale which is most commonly used and the equilibrium scores from Smart Balance Master System which is used for the test of the balance ability for the patients with chronic hemiparetic stroke to predict their falling risk though examining the postural control. Twenty-two subjects who had first stroke participated in this study. Participants were measured the Berg Balance Scale and the Smart Balance Master System. The study found that there was a significant correlation between the Berg Balance Scale and the equilibrium scores from Smart Balance Master System. And there was no significant correlation at all "eye-closed and sway of surfaces" in the 6 conditions of Smart Balance Master System and there was a significant correlation with over median in the other 5 conditions. The study was uncovered that there was no meaningful correlation between the Berg Balance Scale and "eye-closed and sway of surfaces" because chronic hemiparetic stroke patients heavily relied on their vision to maintain their balance ability and the Berg Balance Scale did not properly exam it. Thus to predict their falling risk in clinical practice for the patients with chronic hemiparetic stroke, it would be more efficient ways for us to consider all the effects of sensory organs with more than one clinical evaluation method.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.4
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• pp.1916-1922
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• 2014

This study focuses on observing the brain function characteristics of maladaptive soldiers, through EEG analysis. The number of subjects was 1,119 including 59 maladaptive soldiers, 60 normal soldiers and 1,000 civil youths. The EEG measurements were performed from Sep. 2013 to Jan. 2014. As a result of the study, first, the soldier group's BRQ, ATQ, EQ, ASQ and BQ values were significantly higher than civil youth's, on the contrary to SRQ, ACQ, CQ which were higher in civil youth group. Second, compared to normal soldiers, the values of EQ and BQ were meaningfully low in maladaptive soldiers group, as well as the average values of each 8 quotient. In conclusion, military service can be assumed to have a positive effect on brain function of all soldiers due to regular life cycle, usual physical activities and balanced nutrition, but less effect on maladaptive soldiers who are exempted from those strict life.

• The Korean Journal of Financial Management
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• v.20 no.1
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• pp.125-162
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• 2003

This paper investigates the short- and long- run relationship among Korean, U.S. and Japanese construction indices. We conducted the Johansen's cointegration tests on the hypotheses that the construction indices of three countries we related in the long-run as well as in the short-run. The test results show that there exists no long-run relationship among three countrie's construction indices. In addition, the cointegrating relation did not exist for three countrie's stock market indices and five major Korean construction firms. It fumed out that the U.S. indices Granger-causes Japanese and Korean indices. This finding implies that there may exist international diversification benefit through forming a portfolio from these indices.