• Journal for History of Mathematics
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• v.21 no.1
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• pp.139-156
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• 2008

We investigate the inducing method of irrational numbers in junior high school, under algebraic as well as geometric point of view. Also we study the treatment of irrational numbers in the 7th national curriculum. In fact, we discover that i) incommensurability as essential factor of concept of irrational numbers is not treated, and ii) the concept of irrational numbers is not smoothly interconnected to that of rational numbers. In order to understand relationally the incommensurability, we suggest the method for inducing irrational numbers using construction in junior high school.

• Korean Journal of Logic
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• v.21 no.2
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• pp.175-207
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• 2018

Since Kit Fine's influential paper, Essence and Modality (1994), many philosophers have doubted the prospects of modalism, according to which we can analyze the concept of essence with that of de re modality. However, some philosophers have tried to save modalism against Fine's counterexamples seriously. In this paper, we examine two such attempts which appeal to some kind of 'impossible possibilities.' We argue that such attempts have strong tendency to end in either a metaphysical picture which is very similar to Fine's or a concept of essence which is quite different from Fine's. For this reason, we claim that Fine has no reason to worry about such attempts.

• Communications of Mathematical Education
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• v.33 no.3
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• pp.255-273
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• 2019

In order to help students to understand the essence of prime concepts, this study looked at the history of prime concept development and analyzed how to introduce the concept of textbooks. In ancient Greece, primes were multiplicative atoms. At that time, the unit was not a number, but the development of decimal representations led to the integration of the unit into the number, which raised the issue of primality of 1. Based on the uniqueness of factorization into prime factor, 1 was excluded from the prime, and after that, the concept of prime of the atomic context and the irreducible concept of the divisor context are established. The history of the development of prime concepts clearly reveals that the fact that prime is the multiplicative atom is the essence of the concept. As a result of analyzing the textbooks, the textbook has problems of not introducing the concept essence by introducing the concept of prime into a shaped perspectives or using game, and the problem that the transition to analytic concept definition is radical after the introduction of the concept. Based on the results of the analysis, we have provided several pedagogical implications for helping to focus on a conceptual aspect of prime number.

• Journal of Korean Philosophical Society
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• v.119
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• pp.141-172
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• 2011

This thesis, centered on J. Locke and W. v. Humboldt's concept of language, is written for the purpose of illuminating their view of language and investigating the relationship between a matter of language and that of thought. First, Locke considers language was to be the great instrument and common tie of society. And language consists of words, and words are signs of ideas. Locke's discussion in language is shaped by his belief that these conditions of the transference of knowledge were in his time commonly unsatisfied, especially in two domains. First, there was no agreed classification of 'substance' based on careful observation and experiment. Second, the ideas associated with the names of mixed modes often varied both in the usage of different people and in that of the same person at different times. But Humboldt deals with 'the diversity of the structure of human language' and deals with it in respect of 'its influence on the spiritual development of mankind.' According to his theory, a language is not work(ergon) but an activity(energeia). Its true definition may therefore only be genetic. It is after all the continual intellectual effort to make the articulated sound capable of expressing thought. In short, he conceives of language as a particular 'intellectual effort'.

• Proceedings of the Korea Technology Innovation Society Conference
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• 1999.11c
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• pp.379-398
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• 1999

본 연구는 창의적 문제해결과정에 대한 개념을 신제품 개발 프로젝트에 적용하여 문제해결 관점에서의 신제품개발 성과 모델을 제시하고 있다. 연구개발 프로젝트 팀과 관련한 연구논문들이 그 동안 많이 있었으며, 각각의 이론들은 상호 이질적이고 다른 관점을 취해 연구자와 실무자들에게 다소의 혼란을 야기하여 왔다. 대표적으로 살펴보면 합리적 계획, 의사소통 망, 훈련된 문제해결의 세 개의 차원으로 나누어진다. 이러한 이유로 국내외 학자들은 통합모델을 제시하려고 노력하여 왔다. 그러나 그러한 접근은 신제품 개발의 본질적 성격을 반영하는 새로운 깊이 있는 차원으로서의 모델 통합이 아니라 단순히 영향 요인들의 나열 또는 종합하는 특징을 지니고 있다. 본 연구는 신제품 개발 R&D 팀이 본질적으로 문제해결 집단이라는 전제하에 창의적 문제해결을 위한 구성원들의 문제해결 몰입과 해결안의 질적 수준의 향상을 높이기 위하여 R&D 팀의 인지적 다양성과 R&D팀의 위상과 관련하여 R&D 환경 성숙도라는 새로운 변수를 추가하였다. 여기서 제시하는 창의적 문제해결과정으로서의 R&D팀 성과와 관련된 연구모델은 본질적인 것을 다루면서 단순화 된 모델로서 그 동안 여러 관점에서 다루어져 온 개념들을 통합할 뿐만 아니라, 새로운 차원에서 R&D 성과를 높이는데 개념으로 많은 도움을 줄 것이다.

• Journal of Elementary Mathematics Education in Korea
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• v.15 no.1
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• pp.199-219
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• 2011

In this thesis, we designed a experimental learning-teaching plan of 'decimal fraction concept' at the 4-th grade level. We rest our plan on two basic premises. One is the fact that a essential concept of decimal fraction is 'polynomial of which indeterminate is 10', and another is the fact that the origin of decimal fraction is successive measurement activities which improving accuracy through decimal partition of measuring unit. The main features of our experimental learning-teaching plan is as follows. Firstly, students can experience a operation which generate decimal unit system through decimal partitioning of measuring unit. Secondly, the decimal fraction expansion will be initially introduced and the complete representation of decimal fraction according to positional notation will follow. Thirdly, such various interpretations of decimal fraction as 3.751m, 3m+7dm+5cm+1mm, $(3+\frac{7}{10}+\frac{5}{100}+\frac{1}{1000})m$ and $\frac{3751}{1000}m$ will be handled. Fourthly, decimal fraction will not be introduced with 'unit decimal fraction' such as 0.1, 0.01, 0.001, ${\cdots}$ but with 'natural number+decimal fraction' such as 2.345. Fifthly, we arranged a numeration activity ruled by random unit system previous to formal representation ruled by decimal positional notation. A experimental learning-teaching plan which presented in this thesis must be examined through teaching experiment. It is necessary to successive research for this task.

• Journal of Information Management
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• v.37 no.1
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• pp.39-55
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• 2006

The prototype of a library is analysed upon the facts that are generalized and recognized as commonsense. On the extension of the prototype, a digital library is considered. Ultimately the libraries' prototype should be steady at any time. A library which is being a digital library to which the best technology at that time applies, should function as the creator of the value by publishing, circulating, and re-production of the information resources.

• Journal of Service Research and Studies
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• v.10 no.3
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• pp.23-42
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• 2020

This study conceptualized the essence and propensity of modern management in service age, based on philosophy, and developed items to evaluate the conceptualized content. It was carried out as a new study to deepen the study of management philosophy and management theory by the new management framework. In order to establish the philosophical foundation of the modern management, the essence of the modern management was conceptualized based on the fundamental ideas of the East and West, and then an evaluation item was developed to put the essence and propensity of the modern management into practical use through analytical and empirical methods. After analyzing the representative ideas of mankind, it was derived that the Book of Change has the qualification as a philosophical model that can derive the essence of modern management. The Book of Change explains the reasoning of the world in the structure of two opposing parties, such as Taiji or Yin and Yang, and the process of acknowledging the contradictions within each opposing party and overcoming the contradictions through change is the central idea. Because you can see. After conducting a conceptual study, through empirical research, the essence and propensity of a modern manager should be conceptualized. The concept of essence and empirical study of the modern management using the leading role was conducted in two stages. First, a qualitative study using repetitive comparative analysis (CCM), focus group interview (FGI), and text mining was conducted to derive the essential and propensity conceptualization items that modern managers should possess. In addition, a quantitative study using factor analysis to develop sample items and develop measurement items through literature review and FGI was conducted to derive the essential concept of the modern management. Finally, the essence of modern management was derived: learning, preparation, challenge, inclusion, trust, morality, and sacrifice. In the future, it is necessary to conduct empirical research on the effectiveness of the essence of modern management for global and Korean representative companies.

• Asia Marketing Journal
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• v.1 no.4
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• pp.126-151
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• 1999

고객만족 개념의 연구 초기에서는 고객만족 개념을 인지적 반응, 정서적 반응 등 포괄적으로 정의하고 있으나, 지금까지도 만족이란 구성개념의 세부적 기술(specification of the construct)이 제대로 이루어지지 않았다. 고객만족에 관한 초기연구 이후 이론의 정교화가 점진적으로 이루어지기 시작하면서 고객만족의 개념은 "충족상태가 유쾌한 수준에서 제공되거나, 제공되었는가에 대한 판단"으로 정의됨으로써 만족이란 개념을 보다 구체적인 수준에서 설명하고 있다. 그러나, 이러한 정의에서도 고객만족의 본질적인 특성이 무엇인가는 명확하게 기술되지 않고 있다. 본 연구에서는 선행연구에서 제시되고 있는 고객만족의 개념적 정의(conceptual definition)와 조작적 정의를 비판적으로 검토하여 고객만족 개념을 재정립하고 향후 연구와 활용을 위한 명제를 제시하고 있다.

• Journal of Educational Research in Mathematics
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• v.19 no.3
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• pp.443-459
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• 2009

Despite the many discussions of mathematics education, there are a lot of controversy of the Radian. Generally, Radian is taken to have two properties. One property is an angular property and other is a property of fore numbers. For this reason, both Students and teachers are hard to understand the radian. This study is to provide a base of the radian understand. In essence, radian has only angular property, and other property is a derived property. So radian is to be understood in an angle.