• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2000년도 추계정기학술대회:지능형기술과 CRM
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• pp.417-426
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• 2000

This study suggests integrated neural network models for Interest rate forecasting using change-point detection, classifiers, and classification functions based on structural change. The proposed model is composed of three phases with tee-staged learning. The first phase is to detect successive and appropriate structural changes in interest rare dataset. The second phase is to forecast change-point group with classifiers (discriminant analysis, logistic regression, and backpropagation neural networks) and their. combined classification functions. The fecal phase is to forecast the interest rate with backpropagation neural networks. We propose some classification functions to overcome the problems of two-staged learning that cannot measure the performance of the first learning. Subsequently, we compare the structured models with a neural network model alone and, in addition, determine which of classifiers and classification functions can perform better. This article then examines the predictability of the proposed classification functions for interest rate forecasting using structural change.

• 유통과학연구
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• 제11권10호
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• pp.55-62
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• 2013

Purpose - The purpose of this study is to suggest a risk factor that significantly explains foreign currency risk premia. In recent years, some studies have found that the performance of the simultaneous consumption risk model improves considerably when tested on foreign currency portfolios, which are constructed based on the international interest rates differentials. However, this paper focuses on the long-run consumption risk factor. In our empirical research, we found that the real excess returns of high interest rate currency portfolios depreciate on average, when the future American long-run consumption growth rate appears low. This makes the high interest rate currency portfolios have relatively high risk premia. Meanwhile, the real excess returns of low interest rate currency portfolios appreciate on average, under the same conditions, which results in relatively low risk premia for these portfolios. Therefore, this long-run consumption risk factor might explain why low interest rate currencies do not appreciate as much as the interest rate differential, and why high interest rate currencies do not depreciate as much as the interest rate differential. Research design, data, methodology - In our explanation, we provide new evidence on the success of long-run consumption risks in currency risk premia by focusing on the long-run consumption risks borne by American representative investors. To uncover the hidden link between exchange rates and long-run consumption growth, we set the eight currency portfolios as our basic assets, which have been built based on the foreign interest rates of eighty countries. As these eight currency portfolios are rebalanced every year, the first group always contains the lowest interest rate currencies, and the last group contains the highest interest rate currencies. Against these basic eight currency portfolios, we estimate the long-run consumption risk model. We use recursive utility framework and the stochastic discount factor that depends on the present value of expected future consumption growth rates. We find that our model is optimized in the two-year period of constructing the durable consumption expectation factor. Our main results surprisingly surpass the performance of the existing benchmark simultaneous consumption model in terms of R², relatively risk aversion coefficient γ, and p-value of J-test. Results - The performance of our model is superior. R², relatively risk aversion coefficient γ, and p-value of J-test of our long-run durable consumption model are 90%, 93%, and 65.5%, respectively, while those of EZ-DCAPM are 87%, 113%, and 62.8%, respectively. Thus, we can speculate that the risk premia in foreign currency markets have been determined by the long-run consumption risk. Conclusions - The aggregate long-run consumption growth risk explains a large part of the average change in the real excess returns of foreign currency portfolios. The real excess returns of high interest rate currency portfolios depreciate on average when American long-run consumption growth rate is low, and the real excess returns of low interest rate currency portfolios appreciate under the same conditions. Thus, the low interest rate currency portfolios allow investors to hedge against aggregate long-run consumption growth risk.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2002년도 추계학술대회
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• pp.305-319
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• 2002

International capital movement has made progress at global liberalization of finance and foreign exchange, international monetary norm changing into floating exchange rate system, easiness of collection of information and trade at improvement of information communication technology from early of 1970's. Results of empirical test for relation between foreign exchange rate or various determination factors of foreign exchange rate and interest rate are followed by next sentences. First, according to relation between foreign exchange rate and interest rate, correlation for each of variables after OECD entrance is increased. But, long-term ＆short-term interest rate is affected by Hanbo ＆ Kia's bankruptcy, continuous large scale coporates bankruptcy and crisis of foreign exchange. Therefore, financial instability is occured. If portfolio investment fund has been inflow as it is mollified by continuous shortage of foreign exchange and fall of country's credit rating, it is expected to have positive effect for long-term & short-term interest rate from appreciation of won against dollar. Second, results from relation between determination factor of foreign exchange rate and interest rate are followed by next sentences. If surplus of current account and goods account is continued, yield of corporate bond is to be stable. But, margin of surplus is expected to diminish after second quarter 98, and difference between external and domestic interest (after adjusting foreign exchange rate) is to be diminished. And if net inflows of foreign investor's fund (stock and bond) is diminished, it is to have negative effect for yield of corporate bond. According to foreign investor's investment movement of previous years, hedge md were stayed at least during two years in Mexico. It means that sudden capital outflow is not to be happened at Korea. But if external factors from depreciation of yen and China's renminbi are instable, interest rate is expected to increase from capital's outflows. Third, if it is to decrease instability of foreign exchange rate from increase in surplus of future current account, credit rating's upwardness, stability of yen and renminbi, foreign exchange rate is expected to be stable. It is expected to have continuous stability from short-term interest rate to long-term interest rate in this empirical test.

• 과학교육연구지
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• 제36권2호
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• pp.198-215
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• 2012

이 연구는 창의적 과학글쓰기를 활용한 수업이 고등학생들의 생물에 대한 흥미와 과학적 태도에 어떠한 영향을 미치는지 확인하는 것에 목적을 두고 있다. 창의적 과학글쓰기는 학습 내용을 바탕으로 일상생활 속에서 과학의 원리를 찾아 자신의 생각이나 느낌을 자유롭게 표현하는 글쓰기이다. 생물교과 내용 중 순환과 호흡단원을 선정하여 창의적 과학글쓰기를 활용한 수업 지도안을 개발하였고, 전라남도 순천시 소재 인문계 고등학교 2학년 자연계열 학생 148명을 대상으로 사전-사후 검사 비교집단 설계방법을 사용하였다. 148명의 학생들을 비교집단과 실험집단으로 분류하여 총 7차시로 개발한 창의적 과학글쓰기 수업 지도안을 6주 동안 적용하였다. 학생들의 생물에 대한 흥미의 향상 정도를 알아보기 위해 생물에 대한 흥미 검사지를 사용하였으며, 과학적 태도 변화를 알아보기 위해 과학적 태도 검사지를 사용하여 측정 및 분석하였다. 이 연구의 결과에 따르면, 창의적 과학글쓰기를 활용한 수업은 고등학생들의 생물에 대한 흥미를 향상시키는데 효과적이었으며, 특히 생물에 대한 관심과 생물 학습에 대한 흥미, 생물과 관련된 활동에 대한 흥미 향상에 효과적이었다. 이는 창의적 과학글쓰기를 활용한 수업이 학생들에게 기존 수업과는 달리 새로운 수업방법으로 다가가 학습한 내용을 단순히 암기하는데 그치지 않고 자신의 일상생활에 적용하여 자유롭게 글로 표현함으로써 흥미를 유발시킬 수 있었고, 여러 가지 유형의 글쓰기를 통해 학습내용을 실생활에 다양하게 적용해 봄으로써 일상생활 속에서 생물학 원리를 스스로 찾을 수 있게 해주어 생물에 대한 흥미를 향상시켰음을 알 수 있었다. 뿐만 아니라, 창의적 과학글쓰기를 활용한 수업은 고등학생들의 과학적 태도의 변화에 긍정적인 영향을 주었다. 창의적 과학글쓰기가 학습 내용을 바탕으로 폭넓은 사고를 통해 자신의 생각을 써나가는 글쓰기이므로 글을 쓰는 동안 자신의 사고 과정을 정리하면서 과학적 태도가 긍정적으로 변화되는데 효과적임을 알 수 있었다. 이상의 결과를 토대로 할 때 창의적 과학글쓰기를 활용한 수업이 고등학생들의 생물에 대한 흥미를 향상시키고, 과학적 태도를 긍정적으로 변화시키는데 효과적인 수업방법으로 활용될 수 있다는 결론을 얻었다. 따라서 고등학생들에게 적합한 창의적 과학글쓰기 유형을 주제별로 개발하여 다양하게 활용할 수 있는 방안에 대한 후속 연구가 필요할 것이다.

• 한국응용과학기술학회지
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• 제39권2호
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• pp.348-358
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• 2022

본 연구는 여성 소비자의 외모만족도가 아이 메이크업 관심도 및 메이크업 관리행동에 미치는 영향을 검증하고, 아이 메이크업 화장품 시장에서의 마케팅 전략 수립 및 화장품 개발의 기초 자료를 제공하고자 하였다. 수도권 지역의 20-50대 여성을 대상으로 399부의 자료를 최종 분석하여 사용하였다. 연구결과, 첫째, 일반적 특성에 따른 외모만족도, 아이 메이크업 관심도, 아이 메이크업 관리행동에서는 각 요인에 따라 차이가 나타났으나, 아이 메이크업에 대한 관심은 자신에 대한 관리로부터 시작되며 유행을 따르는 것에 관심을 가지는 것을 알 수 있었다. 둘째, 외모만족도가 아이 메이크업 관심도에 미치는 영향에서는 이목구비에 대한 외모만족도가 높을수록 아이 메이크업 관심도가 높게 나타났다. 셋째, 외모만족도가 아이 메이크업 관리행동에 미치는 영향에서는 피부상태에 대한 외모만족도가 높을수록 유행선도형 메이크업 관리행동이 높게 나타났다. 결론적으로 외모만족도가 높을수록 아이 메이크업 관심도가 높아지고 메이크업 관리행동에 영향을 미치는 것을 알 수 있었다.

• 정보교육학회논문지
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• 제21권2호
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• pp.209-217
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• 2017

최근 SW교육이 강조되고 있으나 아직 많은 학생들이 컴퓨터과학을 접할 기회는 많지 않다. 이 논문에서 연구자는 컴퓨터과학에 대한 관심과 이해를 증대시키기 위해 컴퓨터과학 쇼를 구성하였다. 컴퓨터과학 쇼는 이진체계의 이해, 문자 전달하기, 패리티비트 마술, 숫자 카드 찾기, 색깔 모으기(오렌지 게임)들로 구성하였다. 컴퓨터과학 쇼를 초등학생들에게 적용하고 결과를 살펴보았다. 컴퓨터과학 쇼에 참여한 대부분의 학생들은 "컴퓨터과학 쇼에 대한 경험"이 없었다. 컴퓨터과학 쇼 후의 설문조사에서 많은 학생이 "쇼에 대해 재미있다", "컴퓨터과학에 관심이 생겼다", "주변 친구에게 추천 하겠다"라고 응답했다. 연구를 통해 컴퓨터과학 쇼는 초등학생들에게 컴퓨터과학에 대한 흥미를 이끌어 낼 수 있고, 컴퓨터과학에 대한 호기심과 관심을 일으킬 수 있는 방법임을 알게 되었다.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2000년도 춘계정기학술대회 e-Business를 위한 지능형 정보기술 / 한국지능정보시스템학회
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• pp.235-241
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• 2000

This article suggests integrated neural network models for the interest rate forecasting using change point detection. The basic concept of proposed model is to obtain intervals divided by change point, to identify them as change-point groups, and to involve them in interest rate forecasting. the proposed models consist of three stages. The first stage is to detect successive change points in interest rate dataset. The second stage is to forecast change-point group with data mining classifiers. The final stage is to forecast the desired output with BPN. Based on this structure, we propose three integrated neural network models in terms of data mining classifier: (1) multivariate discriminant analysis (MDA)-supported neural network model, (2) case based reasoning (CBR)-supported neural network model and (3) backpropagation neural networks (BPN)-supported neural network model. Subsequently, we compare these models with a neural networks (BPN)-supported neural network model. Subsequently, we compare these models with a neural network model alone and, in addition, determine which of three classifiers (MDA, CBR and BPN) can perform better. This article is then to examine the predictability of integrated neural network models for interest rate forecasting using change-point detection.

• 한국지구과학회지
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• 제25권3호
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• pp.119-128
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• 2004

This project was carried out under the assumption that applying a science history program to a teaching-learning process would lead to students' increased interest in science and increase the development of their scientific process skills. The project aimed at designing an effective science history program which would help to improve students' scientific process skills, to enhance their interest in learning science, and to maintain their inquiry learning abilities. The survey for the activity objectives was produced by the authors. The test items used for testing students' scientific attitude and scientific process skills were created by Korea National University of Education. The survey about scientific perception indicated that there was a meaningful difference of p=0.005 before and after implementing this program. The survey about scientific interest shows that students became interested in science, science-learning and science-related activities after participating in the science history program. Students' scientific process sills increased by 9% after the program was implemented in the subjects' classes. This indicates that the science history program was effective in improving students' science scientific process skills. Since this project, which targeted 8th grade science education activities, has proven to be effective, developing other programs suitable for younger and older students seems promising, too.

• 한국지역사회생활과학회지
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• 제28권4호
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• pp.599-611
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• 2017

The purpose of this study is to investigate the effect of increased debt on the incidence of domestic violence over the two-year interval 2014-2016. To investigate Korean low-income households with economic hardships, we analyzed the 9th and the 11th waves of the Korea Welfare Panel Study, which is jointly sponsored by the Korea Institute for Health and Social Affairs and the Institute of Social welfare, Seoul National University. The study analysis was based on data from 2,786 households with less than 60% of median income. The main study findings are as follows. First, increases in economic hardships incur domestic violence for low-income households, while increases in low-interest debt decrease the incidence of the domestic violence when controlling for economic hardships. All other things being equal, economic hardship works as a stressor and low-interest debt works as an alleviator influencing domestic violence. Second, when low-income households are experiencing economic hardships, low-interest debt fails to work as an alleviator. Under this circumstance, high-interest debt actually acts as a stressor influencing domestic violence. Thus, we can speculate that use of debt under economic hardships will occur domestic violence for low-income households. This study differs from previous studies in that it examines the effect of increase in debt on the incidence of the domestic violence across different types of debt: low interest, high interest, and credit card. We can conclude that debt can function as a stressor or an alleviator for low-income households, depending on the interest rate and the households' financial situation.

• 농업생명과학연구
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• 제43권5호
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• pp.33-38
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• 2009

This study purposed to examine how the window display of flower shops affects consumers' buying desire, and for this purpose, we surveyed flower buying customers' interest in window display according to their gender, age, and occupation. The survey was conducted using a questionnaire with flower shop customers in Seoul, Daegu, and Gyeongju. Interest in window display was over 1.5 times higher in women than in men. Among criteria for choosing a flower shop, window display was more important than other factors. With regard to experience of being stopped by unique window display, many of the respondents replied that they had such an experience, and the frequency was higher among women than among men. Among different types of window display, theme-type window display was most effective m stimulating customers' curiosity and buying desire. According to occupation, housewives showed particularly high interest in window display. The results of this study show that the window display of flower shops has a significant effect on consumers' buying desire.