• The Journal of Korean Medical History
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• v.30 no.1
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• pp.23-31
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• 2017

Euibangyoochui (醫方類聚), the largest medical book in Korea, has medical and historical significance in that it had classified almost all East Asian medical accomplishments before Joseon Dynasty (1392-1910). Focusing on these values, this research investigates Yi'an (醫案), an East Asian tradition of describing clinical encounters and the therapies employed, in Euibangyoochui. By this investigation, this study expected to not only establish how the genre of Yi'an is employed for what purpose in Euibangyoochui, but also to shed a light on the appearance of Yi'an before Joseon Dynasty. At first, this study extracted Yi'an from Euibangyoochui (醫方類聚), as Yi'an does not have a standardized format. In total, the number of extracted Yi'ans is 1,025 with handwork results. Extracted Yi'ans are analyzed statically, in order to find dispersion of Yi'ans for each chapter and its references. Overall, there are 73 chapters of Euibangyoochui, which has a total of 93 chapters, containing Yi'an, while the chapter on gynecology contains the highest number of Yi'ans, 86. Judged from these result, the genre of Yi'an was used diversely and frequently, indicating various messages in Euibangyoochui. To categorize the usage and purpose of writing of Yi'ans in Euibangyoochui, this study considers some examples of Yi'ans and concludes that 3 types of Yi'ans are employed in Euibangyoochui in order to deliver the adequate medical message. One is result-centered Yi'an delivering a broader medical lesson, such as a taboo in treatment or a doctrine in medicine. The second is the concise-styled Yi'an presenting a short effective medical method. The third is multiple-information Yi'an that describes complex information of patients and medical theories, transmitting diverse lessons. Yi'ans in Euibangyoochui refer to 58 medical books. Books written by JangJaHwa (張子和; 1156-1228) are the most cited books, offering almost a quarter of total amount of Yi'ans in Euibangyoochui. This study is meaningful in that it provides basic information, such as numbers, applications, purpose of writing and references of Yi'an in Euibangyoochui. Moreover considering the historic values of Euibangyoochui, this information reflects, on the other hands, overall figures of Yi'an written before publication of Euibangyoochui.

• Journal of the Korean Society for information Management
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• v.22 no.1 s.55
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• pp.47-64
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• 2005

To guarantee the long-term access to digital material, digital preservation needs to be systemized, and detailed investigation on cost elements of digital preservation should be done for the continued support of budget. To meet the needs in this area, this paper categorized the digital preservation cost into direct and indirect cost through deriving common elements used in prior research on this issue. For case analysis, two institutions, representing domestic University Library and National Library of Korea under large-scale digitization currently, are selected to analyze the current status of digital preservation and estimate the preservation cost. The case analysis shows the systematic preservation function should be performed to guarantee the long-term access digital material, even though a basic digital preservation is currently conducted. It was projected that the digital preservation cost for the two libraries, accounting for $11.8\%$ and $8.6\%$ of digitization cost, respectively, should be injected every year. However, the estimated figures are very conservative, because the cost for estimating the preservation function, such as installing digital repository and producing meta data, was excluded in the estimation. This proves that digital preservation is a synthetic activity linked directly and indirectly to various activities from production to access of digital object and an essential costs that should be considered from the beginning stage of digitization project.

• Education of Primary School Mathematics
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• v.16 no.1
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• pp.57-70
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• 2013

This study is aimed to compare the area of geometry of elementary mathematics textbooks in korea and china. Through this study, we would like to suggest some guidelines in order to develop geometric curriculum and textbooks in korea and to search for more efficient methods of learning mathematics. For this, we have looked through the general characteristics of geometry domain in mathematics curriculums and the textbooks in korea and china. Furthermore, we have found the similarities and differences while comparing specific contents in the two countries. The followings are the conclusions of this study. First, The mathematics curriculum in korea is divided into 'figure' domain, but the one in china is divided into 'space and figure' domain, which deals with figure and measurement. And china constructs the contents of the basic figure as a whole unit. Second, korea gives clear learning aims about contents whereas china gives learning activities. Lastly, when starting teaching a plain figure, korea focuses on checking and finding definitions and characters through fundamental figures. However, china focuses on figuring out components and the relations among them throughout various plain figure activities.

• Journal for History of Mathematics
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• v.18 no.4
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• pp.85-100
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• 2005

In recent papers (Pak et al., Pak and Kim), it was suggested to positively use the history of mathematics for the education of mathematics and discussed the determining problem of the order of instruction in mathematics. There are three kinds of order of instruction - historical order, theoretical organization, lecturing organization. Lecturing organization order is a combination of historical order and theoretical organization order. It basically depends on his or her own value of education of each teacher. The present paper considers a concrete problem determining the order of instruction for the concept of angle. Since the concept of angle is defined in relation to figures, we have to solve the determining problem of the order of instruction for the concept of figure. In order to do this, we first investigate a historical order of the concept of figure by reviewing it in the history of mathematics. And then we introduce a theoretical organization order of the concept of figure. From these basic data we establish a lecturing organization order of the concept of figure from the viewpoint of problem-solving. According to this order we finally develop the concept of angle and a related global property which leads to the so-called Gauss-Bonnet theorem.

• The Journal of Korean Philosophical History
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• no.25
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• pp.137-166
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• 2009

Prior studies on Nam-myoung characteristics used to focus on practical confucianism of "Kyeong Eui (Respect and righteousness)" ideology. However, in the strict sense, what are the elements that can define Nam-myoung as a historical figure and as he has been in his time and after his death? Is it his philosophy established and derived from respect and righteousness? For this, I have a quite different view. All of literatures about Nam-myoung from his and his posterity time consistently most highly valued the idea of "Entering the government service and live in seclusion" advocated by Nam-myoung who consistently refused to be assigned any post from the government. This study aims to look into his idea by examining his personality and to find out the basis of his idea implied through the examination. He discussed the practices of "Entering the government service and live in seclusion" of other historical and present figures of his time through critical examination on them. For setting the reference for determining the reasonability for their practice of such idea, Nam-myoung pointed out "foresight" for understanding "Gimi (shade)" of which "Gi" is the diverging point of good and evil. He understood if one puts aside self-interest and observes the law of nature, one would be a good and lucky man but if one includes self-interest in the law of nature one would be a wicked man. His view on anyone entering government service when the time is against the person to obtain the post or when the person is unable to fill the post satisfactorily, was that they are 'people with self-interest' and therefore their practice of entering the government service and living in seclusion is wrong.

• The Journal of the Korea Contents Association
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• v.22 no.1
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• pp.162-171
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• 2022

According to <2020 Industry character white paper> No.1 character products are toys, which are 58%, and every year. the Art-toy development is receiving attention. Because of this situation, the Art-toy market is growing, and the number of Art-toy artists and companies is also rising. As the Art-toy markets are growing variety of Art-toy needs to be created, and also need to analyze and researched about Art-toy. The Art-toy is primarily personified and is created based on a human proportion body figure. The research conducted a case analysis of Art-toys and a preference survey for general adult men and women through the head-to-head ratio, which is a measurement standard for human proportions. As a result, The Art-toy has an ideal shape ratio and crafting area according to the body ratio. As preference research from men and women, men show seven heads life-sized and women appeared to three heads life-sized figures are most popular. The two and three heads life-sized have a high preference, and the Art-toy case had a relationship. As the Art-toy case and research of preference help to develop the Art-toy design, and following this research will be used as basic data when creating or researching about the Art-toy in the future.

• Journal of Wetlands Research
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• v.25 no.1
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• pp.64-73
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• 2023

Before 2022, there was a lot of confusion in the process of planning and implementing the projects for ecological restoration of the stream due to dualization the principal agent of stream management. Because the Ministry of Environment took charge of the project in 2022, securing the health of aquatic ecosystem of stream became an essential factor in the project. Therefore, in this study, the streams that require the project for ecological restoration was selected in Han River estuary, where it is essential to secure the health of the stream aquatic ecosystem as blackish water zone and Ramsar wetland are located. Physical, chemical, spatial/humanistic, health of aquatic ecosystems evaluation indexes were calculated based on the detailed facts and figures of the project for ecological restoration of the stream in the beginning. Ranking, re-scaling, z-score, and t-score normalization methods were applied to the calculated evaluation index, and the values were compared and analyzed. After that, the entropy weight method was applied to each evaluation index. Through this process, the streams(Mokgamcheon, Anyangcheon etc.) that require the project for ecological restoration were selected for the purpose of securing the health of the aquatic ecosystem in Han River estuary. The result of this study can be used as basic research data in the process of selecting the priority determination of the projects for ecological restoration of the stream.

• Communications of Mathematical Education
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• v.37 no.4
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• pp.635-652
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• 2023

This study conducts a comprehensive analysis of the curricular progression of the concepts and learning sequences of 'lines', specifically, 'line segments', 'straight lines', and 'rays', at the elementary school level. By examining mathematics curricula and textbooks, spanning from 2nd to 7th and 2007, 2009, 2015, and up to 2022 revised version, the study investigates the timing and methods of introducing these essential geometric concepts. It also explores the sequential delivery of instruction and the key focal points of pedagogy. Through the analysis of shifts in the timing and definitions, it becomes evident that these concepts of lines have predominantly been integrated as integral components of two-dimensional plane figures. This includes their role in defining the sides of polygons and the angles formed by lines. This perspective underscores the importance of providing ample opportunities for students to explore these basic geometric entities. Furthermore, the definitions of line segments, straight lines, and rays, their interrelations with points, and the relationships established between different types of lines significantly influence the development of these core concepts. Lastly, the study emphasizes the significance of introducing fundamental mathematical concepts, such as the notion of straight lines as the shortest distance in line segments and the concept of lines extending infinitely (infiniteness) in straight lines and rays. These ideas serve as foundational elements of mathematical thinking, emphasizing the necessity for students to grasp concretely these concepts through visualization and experiences in their daily surroundings. This progression aligns with a shift towards the comprehension of Euclidean geometry. This research suggests a comprehensive reassessment of how line concepts are introduced and taught, with a particular focus on connecting real-life exploratory experiences to the foundational principles of geometry, thereby enhancing the quality of mathematics education.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.18 no.1
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• pp.1-11
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• 2023

Big tech companies are further strengthening its status against the background of data accumulation, price competitiveness by the platform, and competitive advantage due to the network effect. The competition subcommittee of the European Union(EU) imposed a huge fine on Google for antitrust violations, which was interpreted as an attempt to collect Google's unpaid taxes. In fact, taxation efforts in the form of 'Google tax' are underway, targeting expedient tax avoidance by global platforms. It has power and has a considerable influence on the startup ecosystem. The domestic sales and tax scale of global platforms, which have a great impact on domestic content startups and small and medium-sized venture companies, are not accurately measured. In the case of Google, according to research literature, sales in Korea were estimated at about 2 trillion to 3 trillion won in 2017, but Google Korea reported sales of 290 billion won in 2021 and paid 13 billion won in taxes. This study aims to verify the economic effect of the global platform that has a great influence on Korea, and specifically to quantitatively estimate the annual domestic sales and taxes of Google, a representative global platform. As a result of estimating Google's annual domestic sales and taxes based on the figures presented in the document related to Google's economic effect published by Google, the result was 4 to 9 trillion won in annual sales and 390.6 to 913.1 billion won in taxes. This study is meaningful in that it provides basic data on the direction of national and tax policies in the future digital economy era by estimating the problem of tax authority by country of global platform companies with a specific example of Google.

• The Journal of the Convergence on Culture Technology
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• v.10 no.2
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• pp.357-363
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• 2024

As AR display virtual technology enters public learning life extensively, the way in which reality and virtual connection are connected is also changing. The purpose of this paper is to study the expression between the 3D connection sensory information visualization experience and virtual reality enhancement through the visual direction sensory information visualization experience of the plane. It is analyzed by examining the basic setting method compared to the current application of AR display and flat visualization cases. The scope of this paper is to enable users to have a better experience through the relationship with sensory visualization, centering on eye tracking technology in the four categories of AR display connection design: gesture connection, eye tracking, voice connection, and sensor. Focusing on eye tracking technology through AR display interaction and current application and comparative analysis of flat visualization cases, the geometric consistency of visual figures, light and color consistency, combination of multi-sensory interaction methods, rational content display, and smart push presented sensory visualization in virtual reality more realistically and conveniently, providing a simple and convenient sensory visualization experience to the audience.