• Environmental and Resource Economics Review
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• v.14 no.4
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• pp.943-964
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• 2005

This study estimated a wide range of stochastic process models using the frameworks of CKLS (1992) and Nowman and Wang (2001). For empirical analysis, the GMM estimation procedure is adopted for the monthly Brent crude oil prices from January 1996 to January 2005. Using the simulated price series, European call option premiums were calculated and compared each other. The empirical results suggest that the crude oil price has a strong dependency of volatility on the price level. Contrary to the results of previous related studies, it shows a weak tendency of mean reversion. In addition, the models provide different implications for pricing derivatives on crude oil.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.9
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• pp.4303-4312
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• 2013

Study explores the effect of the member's social enterpreneurship at nonprofit organizations on cooperative behavior and proved the mediator effect of value congruency among individuals at those organizations. Examined on a nationwide scale with members at nonprofit organizations, this study indicated followings: 1. Innovativeness, Risk Management, and Social Mission. are valid 2. Innovativeness and Social Mission are related to cooperative behavior, 3. Value congruency with each other at an institution exerts positive effect on cooperative behavior, 4. Value congruency over social enterpreneurship and cooperative behavior partially, yet still positively, mediate social enterpreneurship to cooperative behavior. In other words, the higher the social enterpreneurship in each indivisual is, the higher the degree of value congruency among individuals is, leading to more frequent cooperative behavior. This study also suggests that enhancement of social enterpreureship in each individual at work through education should be considered.

• Archives of design research
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• v.15 no.4
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• pp.359-368
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• 2002

This study was conducted to analyze the Korean inclination to visual equivocality. Similar studies conducted by several psychologists were reviewed in order to determine whether we can put equal value on the visual equivocality which is often shown in natural appearance. This Korean inclination was also investigated with the help of a public survey. The following conclusions were derived from the study. - In reality, there is no visual equivocality for Koreans except in some specific cases. - It is true that, on a screen, a diagonal line from the lower right to the upper left produces a stronger feeling of upward tendency than one from the lower left to the upper right. - The idea that the right side of a screen looks heavier than the left one was not supported and should be rejected for Koreans. - It was discovered that the user interface is working when a person is describing a natural appearance or looking at a description. This fact is generally accepted for Koreans, the majority of whom are right-handed. - Until now, the idea of a Korean superiority toward the left side in visual expression has been found in our culture. In short, it was uncovered that Korean people generally do not have visual equivocality but, instead, have an inclination to left side rather than the right from various aspects.

• Informatization Policy
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• v.19 no.1
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• pp.25-44
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• 2012

This study examined the relationship among perception on information, purpose of information use, and trust in government. It also identified different patterns of groups by their ideological inclination via a national survey on sample population over the age of twenty. The result showed the statistical significance of the relationship among information perception, purpose of information use, ideological inclination, and trust in government. The analysis result implies that the role of government should be readjusted in terms of publicness toward meta-data provider which is transparent and fair without any discrimination by individual difference and economic condition. This will increase the level of trust in government data and its utilization will be tied into the individual connectedness for social integration. The role of government as an information provider needs to establish the role of mediator which always keeps social rules and tracks down violators in a timely manner in the process of information production. With transparent information flow and fair game, the richness of information and a positive production environment will be created.

• Journal of Elementary Mathematics Education in Korea
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• v.13 no.2
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• pp.269-283
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• 2009

This study has investigated the way to improve the communication skills emphasized in mathematics education, and analyzed the effects of Communication Oriented Mathematics Lessons on the mathematical disposition and the academic achievements. For this research, two groups of first grade students from D elementary school in Daegu city were selected which had been proved homogeneous in mathematical disposition and academic achievements via a preliminary test. The experimental group was given Communication Oriented Mathematics Lessons (COML) while the control group was given Traditional Classroom-based Instruction (TCI). COML were given along with first grade, first level mathematics for eight weeks, to improve communication skills of the students who were unfamiliar with mathematical communications. The schemes for the education include revising, summarizing, asking questions, and participating. The results of the study were summarized for mathematical disposition and academic achievements. First, COML is effective to evaluate the will to solve problems in the mathematical disposition of the students, and to make it useful for them to live their lives and to learn other subjects. Second, previous studies have shown contrary interpretations on the effects of COML. This study has found that it does not improve the students' scores on the original form of academic achievement test.

• Journal of the Korea Convergence Society
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• v.11 no.12
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• pp.187-197
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• 2020

In this study, how international diversification of domestic companies increases corporate profits and increases the dividend income of paid-in capital investors, who provided the basis for corporate business activities in the process of distributing profits. I tried to find out if it had an effect. An empirical analysis was conducted using a fixed-effect model for companies with settlements at the end of December listed on the domestic securities market from 2011 to 2018. It was confirmed that the higher the level of international diversification of individual companies, the higher the company's dividend payout ratio and dividend yield. This means that companies can steadily expand corporate profits and dividend yield of shareholders by securing new overseas markets through international diversification, it can be seen that a company's international diversification strategy can contribute to the increase of corporate value by increasing the company's dividend payout ratio by increasing dividendable profit.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.13 no.1
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• pp.119-129
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• 2018

Companies' efforts to secure and sustain a competitive advantage in the market may also appear in the form of new product development. This has increased the importance of leveraging knowledge from other companies in a global competition that is accelerating with an accelerating product life cycle and the development of transportation and communications. In order to create valuable knowledge through the exchange and combination of knowledge, the absorptive capacity of the recipient of the knowledge should be considered as important, but also the knowledge protection tendency, which is characteristic of the knowledge transferor, should be considered. However, studies that considered these factors at the same time were very limited. This study examines the effect of suppliers 'absorptive capacity and buyer' s knowledge protection on new product development performance during the joint development of new products. In addition, we investigated the interaction effect between supplier's absorption capacity and buyer's knowledge protection tendency. For this purpose, data were collected for automobile industry, electronics industry and defense industry, where joint development of new products occurred frequently, and statistical verification was performed by regression analysis. The results showed that the absorptive capacity of the supplier was positively correlated with the performance of the new product development, and the buyer 's knowledge protection tendency had a negative relationship with the new product development performance. In addition, the absorptive capacity of the supplier and the buyer 's knowledge protection tendency have an interaction effect on the new product development result. These results suggest that suppliers' absorption capacity is an important factor in the joint development of new products, but suppliers with superior absorption capacity may have a negative impact on new product development performance if buyers have a negative attitude toward knowledge transfer.

• Communications of Mathematical Education
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• v.29 no.4
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• pp.745-762
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• 2015

In order to examine the change in mathematical inclinationn of middle level engineering college freshmen, we analyse the change of mathematical inclination between 2011 year and 2015 year freshmen who took college scholastic ability test which are based on the national mathematics curriculum 7th and 7th revision, respectively. In medium-sized D university, 2011 year and 2015 year engineering freshmen were taken the test for mathematical inclination, the survey for mathematical background and the recognition of college mathematics and basic mathematical ability test. The outcomes of this survey are followings: Firstly, between 2011 year and 2015 year freshmen, the mean of confidence and flexibility are same, but the 2015's mean of willpower, curiosity, value and esthetics are greater than 2011's. Secondly, in the mean of flexibility, willpower and curiosity, natural science's mean is greater than humanity's. Thirdly, the mean of mathematical inclination's factors is depend on college mathematics goal. Fourthly, there is little correlation between mathematical basic ability and mathematical inclination. Moreover for 2011 year and 2015 year freshmen, the mean of mathematical inclination's factors except value is proportional to mathematical basic ability. For the success of college mathematics in engineering college, this study suggests that high school mathematics curriculum and college scholastic ability test must contain calculus. We also suggest that college mathematics class must be focused on mathematical inclination improvement.

• Journal of Family Resource Management and Policy Review
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• v.2 no.1
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• pp.103-117
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• 1998

The purpose of this study were (1)to investigate the housewives’value orientation toward environmental effect, (2)to examine the effect of environments and value-orientation on housewives’green-consumption behavior and (3)to analyze the hypothesized causal direct or indirect explanation effect among the housewives’green-consumption behavior. The 310 subjects of this study were selected from housewives lived in Seoul. The data obtained were analyzed by Mean, Pearson’s correlation, and Stepwise Multiple Regression Analysis. The major results were as follows: 1) The mean score of housewives’value-orientation was 4.45 out of 5. The value-orientation of housewives was affected by the following variables in order to: environmental pollution and participation I community organization. 2) The mean score of housewives’green-consumption behavior was 3.62 out of 5. The housewives’green-consumption behavior was affected by the following variables in order : value orientation, environmental knowledge, participation in community organization, mass media and recycling system. 3) The most influential variables on the housewives’ green-consumption behavior were in the rank of the value orientation(R²=.39). mass meia(R²=.11). and environmental knowledge(R²=.07).

• Journal of the Korean Society of Costume
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• v.47
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• pp.47-60
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• 1999

The purpose of this study was to investigate relationship between individualism collectivism clothing behaviors and clothing purchasing motives among high school students and the difference of individualism collectivism clothing behaviors and clothing purchasing motives according to demographic variables. And we also took a close look at how they turned out in their actual clothes-buying. The questionaire survey was used toward 55 high school students in seoul region during October 1998. SAS package program were used to analyze the gatherd data. Frequency Percentage Factor Analysis Duncan test Correlation Analysis and so on. The conclusion based on the results are as follow; 1. The analysis of correlations among individualism collectivism clothing behaviors and motivations showed that there are significant correlations among them 2. There are significant differences in individualism collectivism clothing behaviors and clothing purchasing motives according to demographic variables. 3. There also are significant differences in what motivates them to buy clothes and what they actually purchased(=their motives to buy clothes and their actual purchasing).