• Journal of the Korean School Mathematics Society
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• v.24 no.2
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• pp.173-190
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• 2021

This study analyzed the proof of the inverse square law, which is said to be the core of Newton's , in relation to the geometric limit. Newton, conscious of the debate over infinitely small, solved the dynamics problem with the traditional Euclid geometry. Newton reduced mechanics to a problem of geometry by expressing force, time, and the degree of inertia orbital deviation as a geometric line segment. Newton was able to take Euclid's geometry to a new level encompassing dynamics, especially by introducing geometric limits such as parabolic approximation, polygon approximation, and the limit of the ratio of the line segments. Based on this analysis, we proposed to use Newton's geometric limit as a tool to show the usefulness of mathematics, and to use it as a means to break the conventional notion that the area of the curve can only be obtained using the definite integral. In addition, to help the desirable use of geometric limits in school mathematics, we suggested the following efforts are required. It is necessary to emphasize the expansion of equivalence in the micro-world, use some questions that lead to use as heuristics, and help to recognize that the approach of ratio is useful for grasping the equivalence of line segments in the micro-world.

• International Area Studies Review
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• v.16 no.1
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• pp.29-52
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• 2012

This study investigates the relationship between corporate social responsibility and corporate governance among major US corporations belonging to S&P 500 index during 2000-2008. Specifically, it examines the ways in which firms engage their boards of directors in integrated strategy by establishing a public affairs(PA) or social responsibility(SR) committee at the board level and the effects of this practice on their corporate social performance(CSP). The empirical findings show that negative CSP is the major driver for establishing such a committee, that is, firms suffering from negative CSP as a result of experiencing undesirable social events tend to establish such a committee. On the other hand, such a committee helps the firm increase positive CSP once it is established. In other words, the purpose of establishing such board-level committees is to address problems associated with negative CSP, and once established, they can help enhance positive CSP by enabling the firm to integrate market, non-market, and social responsibility aspects in strategy formulation more effectively. This is evidence that Baron's integrated strategy framework can help firms achieve tangible outcomes.

• Korean Journal of Legislative Studies
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• v.24 no.1
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• pp.5-29
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• 2018

This paper aims at making an assessment about the first year of the Moon Jae-in government. President Moon was elected amid political insecurity over the impeachment of then-president Park Geun-hye. However, the Moon administration settled in fairly smoothly despite no transition period of presidential power. Political and economic stability was soon restored, and the tensions between the US and North Korea over the North's nuclear weapons program were, to some extent, managed along with the agreement of the North-South summit and the US-North Korea summit. Pyeongchang hosted the 2018 winter olympics and paralympics successfully. Moon continued very positive approval ratings of higher than 70%. However, he has something to be desired. His leadership seems to rely heavily on a limited number of close staff in the Blue House, alienating the governing the Minjoo Party of Korea. He should build better relationship with opposition parties particularly given a divided government. Rectification of the lingering negative practices should also produce institutional solutions. Above all, Moon should carefully watch out to prevent scandals over corruption and power abuse around him and his family, which would lead to a precipitous decline of the approval ratings and the abrupt weakening of the leadership.

• (The)Korea Educational Review
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• v.22 no.3
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• pp.353-383
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• 2016

The purpose of this study is to examine the outcomes and implementation process from various stakeholders' perspectives related to the CAMPUS Asia (Collective Action for Mobility Program of University Student in Asia) pilot project, and thereby provide practical suggestions for it. The pilot projet of the CAMPUS Asia lasted four years from 2012 to 2015. A hybrid approach was used to analyze its implementation process, and diverse sources of data such as documents, surveys, and interviews were employed for analysis. Findings showed the accomplishments of the CAMPUS Asia pilot project for promoting participants' development and building the foundation for international cooperation at the governmental and institutional levels, while various limitations were also identified. In addition, analysis was conducted to identify the contextual factors that influenced the outcomes and limitations of the CAMPUS Asia pilot project at the governmental, institutional, and student levels. Based on these findings, multiple suggestions to maximize the effect of the CAMPUS Asia pilot project were provided, for example, to set up the ultimate goals of the project clearly, for governments to coordinate different academic systems by country and address the issue of credit transfer, to establish the uniqueness of the project, to strengthen the curriculum of each consortium, to co-manage the extra-curricular activities, and to develop the specialized career paths.

• (The)Study of the Eastern Classic
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• no.72
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• pp.217-264
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• 2018

The purpose of this research is to understand the view on people(百姓) and Lee Won-ik(李元翼)'s view on politics, comparing with Seonjo(宣祖)'s view on them. They as political actors sufficiently cognized the condition of life of people had been very desperate. Seonjo had approached from politics to the life of people, while Lee from the life of people to politics. The former has the precariousness of transformation and instrumentalisation of the life of people. The latter has the possibility of the life of people to lead the politics. Lee's stance was on the latter aspect. He had tried to conceive the people as they are, in other words as reality, not as they should be, in other words as idea. He refrained the elucidation of people from confining it within dichotomy structure of ruling-ruled. He had tried to conceive the organic relationship between people and other existences within community. He did not give knowledge-centered question of what is the life of people, but gave situation-phenomenon-centered question of how people has been living. This approach eulciates Lee's focus on the problems of Gongyi(工役), military service(軍役), Labour service(?役), the reduction and exemption of the tax, and the appointment of provincial officer(守令). As for Lee Won-ik, the best form of life of people is to make people have mind to deserve to live, to economize their power(寬民力), to make them savor their life(樂民生), and to make their life easy(安民).

• (The)Study of the Eastern Classic
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• no.34
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• pp.133-165
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• 2009

'Travelogue to Shenyang(瀋陽日記)' is a documentary literature that Seon Yak-hae (宣若海) who was a military official of Joseon(朝鮮) Dynasty, described matters happened in Shenyang when he visited there as an envoy during early 17th century when Qing(淸) Dynasty and Ming(明) Dynasty coexisted and had diplomatic conflict with Joseon Dynasty. This documentary literature is included in the data collection of China that gathers important historical data of China and has been published and delivered in China, but it hasn't caught attention in Korean academic society. There's another 'Travelogue to Shenyang' which is known in the academic society that is a record of eight years of hostage period of Crown Prince Sohyeon and his group in Shenyang. However, this 'Travelogue to Shenyangl' of Seon Yak-hae is a record of Joseon and other countries' status at that time as well as the Joseon intellectual's activities while visiting Shenyang before the outbreak of the Manchurian Invasion (to Korea) in 1636. Seon Yak-hae who wrote this 'Travelogue to Shenyang' recorded his successful works as an envoy with proud, and showed a unique appearance as a military official and intellect who wanted to observe political and military status of Qing Dynasty secretly and report to his country. Since he was an intellect who had military background, he responded bravely when dealing with diplomatic problem and collected data strategically. He also had the ability as an intellectual official, so he wrote realistic articles and also wrote some poems to express his honest feelings in this peculia Travelogue. Therefore, this ' Travelogue to Shenyang' has both values as a historic records that showed diplomatic status of Joseon in the 17th century and literature records that showed unique spirit to record as an intellect who also had military mind.

• The Journal of Korean Philosophical History
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• no.59
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• pp.287-312
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• 2018

Confucianism which pursues the right relationship between person and person, depicts the ideal that moral individuals contribute to community development. In the 16th century, Toegye Yi Hwang, the authority of Korean Confucianism, reflected his educational intentions and interests and made the whole of the body of Confucianism and the whole process of the study into a series of 10 paintings 'Ten Diagrams of Sage Learning'. The purpose of the education which is claimed in the 'Ten Diagrams of Sage Learning' is to become a saint, and it ultimately coincides with the purpose of moral education which is to be introspective and practical moral man. The whole theme of 'Ten Diagrams of Sage Learning' is related to revealing the principles of humanity and morality in order to restore human nature on the basis of piety. Piety(敬) is also a purpose and a method of self-discipline, and is the main content. The method of education for traditional confucianism is aiming for the organic integration of purpose, content and method of education and reveals the consistency of the combination of knowledge and behavior in content and method. Exploring the universal value of traditional culture and re-raising moral culture that is important in traditional education is to discuss that what is valid for the present and the future is derived from the past tradition. That may be useful in solving today's educational problems. Especially, it is very meaningful to adopt a reflective approach to cultivate talented people who can 'realize oneself' and 'care for the community' which is the ultimate goal of education through analyzing the essence of moral education pursued by traditional education.

• The Journal of Korean Philosophical History
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• no.38
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• pp.221-249
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• 2013

This paper aims to examine the meaning of 'Xuan(玄)' in the cosmogony, especially in the view of Yang-xiong(揚雄) and Ge-hong(葛洪). The concept 'Xuan' is thought to have originated in the XianQin text Laozi & Zhouyi. After the XianQin period, this concept has been defined as philosophical concept, and it has a variety of meanings. This paper discussed about the cause of creation, the differentiation process, and the existence principle, within the cosmogony of Yang-xiong & Ge-hong. First, the cause of creation in the Yang-xiong is efficient cause in the state of the elementary substance, but also is the principle that is applied to the phase of the creation. While the cause of creation in the Ge-hong is comprised of the cause of the creation and the existence principle. Thus, the meaning of the concept 'Xuan' in the both scholar is different from the matter monism. Second, the concept 'Xuan' in the both scholar contains the tendency of cosmogony and ontology. Yang-xiong maintains the cosmogony, but he also hold on the rudimentary view of ontology. While Ge-hong display a tendency of ontology. Third, Ge-hong accepted the view of Yang-xiong and he developed the meaning of the existence principle. And finally, the concept 'Xuan' in the both scholar forms a philosophical system. Yang-xiong insisted that the concept 'Xuan' is the basis of the universe, the human-being and the society. While through realizing the concept 'Xuan', Ge-hong tried to pursue the human-being's agelessness and the eternal life.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.13 no.4
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• pp.63-70
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• 2003

In the modern electronic world, the authentication of a person is an important task in many areas of online-transactions. Using biometrics to authenticate a person's identity has several advantages over the present practices of Personal Identification Numbers(PINs) and passwords. To gain maximum security in the verification system using biometrics, the computation of the verification as well as the store of the biometric pattern has to be taken place in the security token(smart card, USB token). However, there is an open issue of integrating biometrics into the security token because of its limited resources(memory space, processing power). In this paper, we describe our implementation of the USB security token system having 206MHz StrongARM CPU, 16MBytes flash memory, and 1MBytes RAM. Also, we evaluate the performance of a light-weighted In-gerprint verification algorithm that can be executed in the restricted environments. Based on experimental results, we confirmed that the RAM requirement of the proposed algorithm was about 6.8 KBytes and the Equal Error Rate(EER) was 1.7%.

• Korean Journal of Construction Engineering and Management
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• v.23 no.2
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• pp.85-94
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• 2022

Construction industry is facing difficult challenges in terms of productivity, manpower, and industrial accidents. Currently, along with the 4th Industrial Revolution, various high-tech technologies are emerging, and efforts are being made to solve the problem by applying the technologies related to the 4th Industrial Revolution to the construction industry. As part of these efforts, research is being conducted to develop a construction equipment control system to increase productivity and safety at earthworks sites where many and various types of construction equipment are involved, and the system needs a function to increase productivity by optimizing the moving path of construction equipment. In the case of trucks, the location of the temporary road must be optimized in order to optimize the path of movement in the construction site. However, only matters related to the quality standard of temporary roads have been suggested so far, and there is no standardized process for efficiently determining the location of temporary roads. In this paper, the factors and its importance related to the location of the temporary road were identified through field surveys and interviews with experts, and a method for determining the location of the temporary road was presented. It was confirmed that the suggested method through a case study could improve the productivity of earthwork.