• Communications of Mathematical Education
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• v.34 no.3
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• pp.393-419
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• 2020

Trigonometry allows us to recognize the usefulness of mathematics through connection with real life and other disciplines, and lays the foundation for the concept of higher mathematics through connection with trigonometric functions. Since international comparisons on the trigonometry area of textbooks can give implications to trigonometry teaching and learning in Korea, this study attempted to compare trigonometry in textbooks in Korea, Australia and Finland. In this study, through the horizontal and vertical analysis presented by Charalambous et al.(2010), the objectives of the curriculum, content system, achievement standards, learning timing of trigonometry content, learning paths, and context of problems were analyzed. The order of learning in which the three countries expanded size of angle was similar, and there was a difference in the introduction of trigonometric functions and the continuity of grades dealing with trigonometry. In the learning path of textbooks on the definition method of trigonometric ratios, the unit circle method was developed from the triangle method to the trigonometric function. However, in Korea, after the explanation using the quadrant in middle school, the general angle and trigonometric functions were studied without expanding the angle. As a result of analyzing the context of the problem, the proportion of problems without context was the highest in all three countries, and the rate of camouflage context problem was twice as high in Korea as in Australia or Finland. Through this, the author suggest to include the unit circle method in the learning path in Korea, to present a problem that can emphasize the real-life context, to utilize technological tools, and to reconsider the ways and areas of the curriculum that deal with trigonometry.

• Journal of Korean Society of Forest Science
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• v.109 no.3
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• pp.291-299
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• 2020

The purpose of this study was to propose the most cost-effective sampling method, by analyzing the cost of forest resource investigation per sampling method for the planned harvesting area of in Chunyang-myeon, Byeonghwa-gun, Gyeongsangbuk-do, Korea. For this study, three sampling methods were selected: random sampling method, systematic sampling method, and line transect method. For each method, sample size, hourly wage, number of sample points, survey time, travel time, the sample error rate of the estimated average volume, and the desired sampling error rate were used to calculate the cost of forest resource inventories. Thus, 10 sampling points were extracted for each sampling method, and the factors required for cost analysis were calculated via a field survey. As a result, the field survey cost per ha using the random sampling method was found to be have the lowest cost, regardless of the desired sampling error rate, followed by the systematic sampling method, and the line transect method.

• The Journal of the Convergence on Culture Technology
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• v.1 no.1
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• pp.69-72
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• 2015

Abstract Social pathologic phenomenon such as low fertility, nuclear family and one person households seems to be on the rise as Korea moves towards being an aging society. We think many trouble is expected to be exit as aging society progresses, but there were few studies about an aging society, especially funeral culture. Appearance of the aging society in Korea similarly follows the course of Japan. So we studied about similar funeral culture of aging society in Japan and prepared for the funeral culture in Korea. This study will suggest a gaze on realistic objective point of view, through the way to illustrate exactly the concept of "funeral for family (家族葬)" among Japanese funeral culture(Syukacheu(終活), Chyokusou(直葬) and funeral for family(家族葬)) and will be expected to be an important guide for leading the funeral culture in Korea occur due to aging in future. And this study will give a chance to ruminate on our's funeral attitude about the deceased's dignity.

• Korea journal of population studies
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• v.30 no.2
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• pp.45-69
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• 2007

This study analyzes differences of self-rated health status between Korea and three European countries. Self-rated health status is highly correlated with objective health status such as chronic diseases and ADL(Activities of Daily Living)/IADL(Instrumental Activities of Daily Living), but it is also influenced by individual attitude or belief about health. Therefore, differences of self-rated health status among countries are determined by the combination of (1) differences of objective health status and (2) socio-cultural characteristics affecting individuals' attitude and belief. Using 'Korean Longitudinal Study of Ageing(KLoSA 2006)' and 'Survey of Health, Ageing, and Retirement in Europe (SHARE 2004)', we found that Korean older people are more likely to feel negatively on their health status than their European counterpart. The findings are explained in two different ways. First, how strongly the objective health status affects on the subjective health status varies among countries. Korean older people with chronic diseases are more likely to evaluate their health status negatively because of the diseases than their European counterparts do. Second, after controlling the effects of the objective health condition, the subjective health status of Korean older people is still lower than that of the European elderly.

• Korean Institute of Interior Design Journal
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• v.16 no.6
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• pp.152-160
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• 2007

The purpose of this study is to compare conditions of Korean Restaurants in Hong Kong with those of Thai ones, which have already succeeded in globalization, by investigating and analyzing the characteristics of the two parties in Hong Kong, a world-wide international city. For these purposes, we selected 10 Korean restaurants & 10 Thai restaurants in Hong Kong, and visited the selected restaurants during the period from 2007.7.9 to 2007.7.14, to examine indoor spaces and food-related elements were recorded in detail, photographed and analyzed. The results of study is as follows ; we have first found that Korean restaurants did not show any humane properties linked to restaurant concepts and indoor space, did link Korean images through their trade names, and showed decorative culture based on traditional house and dietary-life cultural properties based on traditional Korean Bansang table setting at large. On the other hand, 4 (22.5%) out of the entire cases in Thai restaurants showed religious characteristics with strong Buddhist colors revealed, and all cases showed traditional Thai food cultures, from which we could find out dietary-life cultural properties. Second, whereas there were one case of Korean restaurants in which tradition was main and modernity was assistant, five cases in which tradition and modernity were paralleled in value, and two cases in which modernity was main and tradition was assistant, Thai restaurants had one case where tradition was main and modernity was associative, four cases in which tradition and modernity were paralleled in value, and four cases where modernity was main and tradition was assistant. This means that the Thai restaurants did not insist only on tradition, but showed efforts to transmit luxurious and refined Thai images to people from the world. Third, whereas Korean restaurants had to do with all kinds of menu, were equipped with brazierson their tables uniformly, and showed any differences because they did not use different tableware in accordance with foods, Thai restaurants divided the dinner into the hors d'oeuvre, the main, and the dessert or systemized menu structure by categories in accordance with cooking styles, and tableware selection in accordance with menus, table setting, food materials, and food styling using flowers were consistently expressed.

• Journal of the Korean association of regional geographers
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• v.22 no.4
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• pp.792-808
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• 2016

Due to the high importance of foreign trade in the national economy, Korea has a lot of ports designated as trade ports compared to the small land size. However, because of the poor utilization results, some small trade ports have been criticized for wasteful financing due to redundant investment in SOC. This is because the characteristics and comparative advantage of foreign trade in trade ports have not been analyzed in detail by region. Therefore, this study analyzes the patterns and types of change in the size of trade, number of cargo items handled, and the number of trade target countries in the past 20 years for 19 domestic small trade ports using the time-series cluster analysis technique. As a result of analysis, Korean small trade ports were classified into five growth pattern types according to the analysis index, and characteristics and implications for each type could be derived. Today, as the foreign trade environment changes drastically and the importance of balanced regional development is emphasized, it is very important to study the growth types and implications of small trade ports and the results of this study are expected to provide meaningful implications for regional port development and operation in the future.

• Communications of Mathematical Education
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• v.36 no.2
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• pp.229-252
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• 2022

This study analyzed the introduction of addition and subtraction, including the composition and decomposition of numbers in the Korean, Singaporean, American, and Japanese elementary mathematics textbooks. The analytic foci of this study included visual models and their connections with the given problem contexts, the introduction of addition/subtraction or addition/subtraction sentences and their connections with the visual models, and additional activities for students to develop a relational understanding of the equal sign. The results of the analysis demonstrated diverse connections, mainly because the problem contexts, visual models, and the introduction of addition/subtraction or addition/subtraction sentences were implemented differently for each textbook. There were differences among the textbooks in what order of problem contexts were presented. Regarding the use of visual models, two textbooks tended to use one model consistently, whereas the other textbooks used various models depending on the problem contexts. There were subtle but significant differences in introducing addition/subtraction or addition/subtraction sentences. For a relational understanding of the equal sign, all textbooks included activities emphasizing that both sides of the equal sign are equal. Based on the results of this study, this paper closes with several implications related to the problem contexts to introduce addition/subtraction and addition/subtraction sentences as well as the use of visual models, which can serve as a basis for a new unit for the subsequent textbook.

• Journal of Intelligence and Information Systems
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• v.29 no.2
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• pp.85-100
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• 2023

Corporate ESG performance (environmental, social, and corporate governance) reflecting a company's strategic sustainability has emerged as one of the main factors in today's investment decisions. The traditional ESG performance rating process is largely performed in a qualitative and subjective manner based on the institution-specific criteria, entailing limitations in reliability, predictability, and timeliness when making investment decisions. This study attempted to predict the corporate ESG rating through automated machine learning based on quantitative and disclosed corporate financial information. Using 12 types (21,360 cases) of market-disclosed financial information and 1,780 ESG measures available through the Korea Institute of Corporate Governance and Sustainability during 2019 to 2021, we suggested a deep neural network prediction model. Our model yielded about 86% of accurate classification performance in predicting ESG rating, showing better performance than other comparative models. This study contributed the literature in a way that the model achieved relatively accurate ESG rating predictions through an automated process using quantitative and publicly available corporate financial information. In terms of practical implications, the general investors can benefit from the prediction accuracy and time efficiency of our proposed model with nominal cost. In addition, this study can be expanded by accumulating more Korean and international data and by developing a more robust and complex model in the future.

• The Korean Journal of Franchise Management
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• v.4 no.1
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• pp.73-90
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• 2013

Franchise industry know-how and an excellent management company organically integrated knowledge management resources industry. The franchise industry in the country's economic growth continues to contribute a large bar, has had an impact on the company's growth The franchise industry franchise industry in Japan than in other industries, and long-term steady growth rate despite the recent recession and recovery illustrates a trend Thus, the structure of the franchise industry in Japan by analyzing the company's franchise industry in Korea for overseas expansion strategies are evaluated In this study, a plateau in Japan to get bigger and provide a starting point for the 2009 and 2010 Census of Japan Association of Chain and Franchise all over the franchise system through a comparative analysis of Japanese overseas franchise business structure and strategies, and identify the research Korea based on the company's overseas expansion strategy is aimed at For this purpose, literature review and statistical analysis of the number of chain stores industry results, sales trends over the following four results are derived. 1) services with emphasis laid plans enable one franchise 2) the flow of services to the aging franchise, nursing, health-oriented, early childhood education, beauty and related business expected to grow 3) Recognition of Japanese culture and understanding of the importance of the service sector to account for differences in 4) services business of the need for efforts to increase productivity are summarized Based on the results of this study, Korea Franchise companies in the industry, Japan IS overseas expansion strategy franchise industry awareness of cultural differences in the institutional environment and the strategy should be considered.

• Journal of Service Research and Studies
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• v.11 no.4
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• pp.43-55
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• 2021

This study analyzed the efficiency of medical services in OECD member countries by dividing it into operational efficiency and quality efficiency. For this purpose, data from 2017-2019 OECD Health Statistics were used. As the analysis method, super efficiency was measured by applying an output-oriented Variable Returns to Scale (VRS) model. As a result of the analysis, Switzerland, Korea, and Italy were included in the high group of operational efficiency, Canada, Greece, Denmark, etc. in the medium group, and Belgium, Germany, and Spain in the low group. Based on quality efficiency, Norway, Switzerland, and Spain are in the high group, and Greece, Denmark, Mexico, etc. are in the medium group, and the Netherlands, Germany, Belgium, etc. were included in the low group. As a result of comparative analysis of efficiency by OECD member countries as of 2018, it was found that Korea's operational efficiency was the most efficient and quality efficiency was inefficient. Korea (0.998) should improve life expectancy by 0.2 (0.2%) and subjective health perception by 44.2 (138.1%) by benchmarking Greece (0.422), Switzerland (0.207), and Spain (0.371) to improve quality efficiency. Unlike most previous studies that focused on operational efficiency, this study measured quality efficiency together and analyzed the efficiency of the medical service industry in each OECD member country. Through this, this study has implications in that it confirmed the international competitiveness of the domestic medical service industry and suggested ways to improve efficiency.