• Journal of Educational Research in Mathematics
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• v.16 no.1
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• pp.1-23
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• 2006

It is regarded as critical to analyse and re-appreciate Euclidean geometry for the sake of improving school geometry This study, a critical analysis of demonstrative plane geometry in current secondary school mathematics with an eye to the viewpoints of 'Elements of Geometry', is conducted with this purpose in mind. Firstly, the 'Elements' is analysed in terms of its educational purpose, concrete contents and approaching method, with a review of the history of its teaching. Secondly, the 'Elemens de Geometrie' by Clairaut and the 'histo-genetic approach' in teaching geometry, mainly the one proposed by Branford, are analysed. Thirdly, the basic assumption, contents and structure of the current textbooks taught in secondary schools are analysed according to the hypothetical construction, ordering and grouping of theorems, presentations of proofs, statements of definitions and exercises. The change of the development of contents over time is also reviewed, with a focus on the proportional relations of geometric figures. Lastly, tile complementary way of integrating the two 'Elements' is explored.

• Journal of the Daesoon Academy of Sciences
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• v.17
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• pp.239-279
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• 2004

이 글에서 나는 세 단계의 다른 종교이해 방식을 구분하여 세 가지 형태의 종교다원주의 정의하고 그 특징을 설명하고 있다. 그 첫째는 차별적 다원주의인데, 현존하는 혹은 앞으로 그 모습을 드러낼 종교들 사이의 차별성을 그대로 인정하는 형태이다. 둘째는 상보적 다원주의로써 현존하는 또는 앞으로 출현할 종교들은 각각의 종교적 실천과 그 믿음이 그 내용상 상호보충적인 성격을 지니고 있다고 보는 것이다. 셋째는 통합적 다원주의이다. 이 관점은 모든 종교를 인류와 인간의 세계이해의 전체론적 발전 과정의 필수적 부분들로 보는 것이다. 이 가운데 통합적 형태의 다원주의가 가장 중요하다. 왜냐하면 이 관점은 각각의 다른 종교들에게 그것 고유의 이질적 역사적 관점에 의한 하나의 토대를 제공하기 때문이다. 이 관점은 또한 각기 다른 종교들의 차이점들을 창조적 전체와 연관시켜보는 개방적이고 창조적인 통찰력을제공함으로써 그 종교들이 인간의 앎과 실천에 가장 중요한 비젼과 관련하여 각각이 궁극적으로 적절한 위상을 성취할 수 있도록 하며, 상호간에 배우고 더욱 발전할 수 있는 존재로 서로 이해되고 격려하도록 하는 기능을 수행한다. 이와 같은 종교적 통찰력의 면에서 나는 상호보충적인 다원주의 이론을 발전시킨 존 콥과 데이비드 그리핀의 업적에 심심한 고마움을 전한다. 그러나 동시에 각 종교의 독특성은 유지하면서도 상대주의는 피하기 위해서는 어떻게 이 상호보충적인 다원주의가 화이트헤드의 창조성 철학의 관점에 의해 부분의 개성을 유지하면서도 전체를 감싸 아우르는 통합적 다원주의로 반드시 한 걸음 더 나아가야 하는지를 강조 설명하고 있다. 이 글의 후반부에서는, 나는 또한 통합적 다원주의 관점의 종교적 진리와 믿음의 고양이 중요함을 이해하기 위하여 서로 연관된 네 가지 주제를 논한다: (1) 지역적으로 상대적인 인류의 필요에 동시에 응하고자 하는 동서의 세계종교의 목표에 부응하기 위해서는 화이트헤드적 사유의 틀과 역경의 철학이 보여주는 사유의 틀이 어떻게 통합되어야 하는가 (2) 어떻게 상대주의의 내적 논리에 의해 제기된 논쟁점들이 세계종교 안에서 동시에 극복되고 고려되어 종교가 계속 발전하는데 도움을 줄 수 있는지 (3) 어떻게 인류가 창조성의 또는 창조자로써의 신의실존-우주론적 견해의 풍부함으로 인도 되는 신적 개별화의 근본 은유적 존재로 역할을 해왔는지 (4) 유가와 도가의 통합적 조화의 역사적 모범에 기초해 볼 때, 기독교와 불교 이 두 세계종교의 통합적 조화가 가능한지, 그리고 왜 이 두 종교가 세계의 종교들이 서로 다른 종교적 믿음과 행위의 통합적 조화의 상태로 나아가는 미래의 변화를 이루는데 유효한 종교가 되는지.

• Journal of Gifted/Talented Education
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• v.24 no.6
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• pp.1073-1097
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• 2014

The working concept of the disadvantaged gifted is meant by those who hardly can have a chance to develop one's own gifts because of the environmental conditions and factors. The main purpose of this study is to explore the inherent trait of the music giftedness, which is composed of musical ability, creativity, and task commitment. Grounded upon the phenomenal research, this study purposefully samples ten disadvantaged students who participated in the arts gifted camp hosted by Korean National Research Institute for the Gifted in Arts. Thus, it explores the inherent traits of the disadvantaged gifted by coding, segmenting, and analyzing the interview with ten disadvantaged, and the evaluation reports of the expert group. The inherent trait of music giftedness of the disadvantaged gifted is shown as this: the inherent trait of the disadvantaged gifted in music is closely interrelated with one's own concept of giftedness. Whereas they show the high motivation and task commitment, they are hardly observed to have the creativity in their musical activities and learning. Finally, this study give a proposition for the strategy to stimulate and improve the inherent trait of the disadvantaged gifted in music: the importance of parents education and parent screening, meta-cognitive skills, the leaning-based creativity education, and the significant role of intrapersonal catalyst.

• The Journal of the Acoustical Society of Korea
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• v.21 no.7
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• pp.632-640
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• 2002

In this paper, we proposed ACM (Anti-filler confidence measure) to compensate shortcoming of conventional RLJ-CM (RLJ-CM) and NCM (normalized CM), and integrated proposed ACM and conventional NCM using HCM (hybrid CM). Proposed ACM analyzes that FA (false acceptance) happens by the construction method of anti-phone model, and presumed phoneme sequence in actuality using phoneme recognizer to compensate this. We defined this as anti-phone model and used in confidence measure calculation. Analyzing feature of two confidences measure, conventional NCM shows good performance to FR (false rejection) and proposed ACM shows good performance in FA. This shows that feature of each other are complementary. Use these feature, we integrated two confidence measures using weighting vector α And defined this as HCM. In MDR (missed detection rate) 10% neighborhood, HCM is 0.219 FA/KW/HR (false alarm/keyword/hour). This is that Performance improves 22% than used conventional NCM individually.

• Cross-Cultural Studies
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• v.41
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• pp.245-273
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• 2015

The purpose of this paper is to investigate the characteristics of some forms, "거" [kə], "게" [ke], and "걸" [kəl], which originated from a dependent noun "것" [kət]. Nowadays, some studies have argued that these forms are allomorphs of "것" [kət]. However, they are not allomorphs because they do not show a complementary distribution with "것" [kət]. Moreover, we should not deal with "게" [ke] and "걸" [kəl] as at the same level of "것" [kət] and "거" [kə] because they respectively consist of "거" [kə], and the subjective case marker "이" [i] or the accusative case marker "ㄹ" [l]. In other words, they function as an element of a sentence. Therefore, just the "거" [kə] and "걸" [kəl] remain to be argued about concerning variation among them. Especially, the "거" [kə] is almost freely alternated with "것" [kət], whereas even though "걸" [kəl], which is not part of KP (N + case marker), is very restricted so as to appear to be from "거" [kə]. Of course, the restriction they show cannot be under the condition that corresponds to the conception of the alternation. In conclusion, only the "거" [kə] is just an optional variation morph of "것" [kət], whereas "걸" [kəl] is an optional variation morph of "거" [kə]. There is no allomorph of "것" [kət] in the forms originated from itself.

• Journal of Educational Research in Mathematics
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• v.15 no.4
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• pp.375-399
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• 2005

In this article, I identified many points of commonness and differences at)feared in the fraction units of three conspicuous textbooks -McLellan, MiC and Korea. After that, 1 evaluated these results with reference to more general didactics on which each text-book is based. A background theory of Mc-Lellan's textbook was Dewey's experientialism, and that of MiC was Freudenthal's realistic mathematics education. Through this study, I have reached the fact that these three textbooks could not exhibit the phenomenological wholeness of fraction. Driven by measuring number model which is very abstractive, McLellan's text-book is disregarding the lower level context. MiC textbook, driven by real context, is ignoring higher level model which is close to rational number concept. From an excess of formulation and practice of algorithm, Korea's textbook is overlooking the real context. It is necessary that a textbook which would display the phenomenological wholeness of fraction is developed.

• Journal of International Area Studies (JIAS)
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• v.14 no.1
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• pp.309-330
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• 2010

This paper examines the life-cycle and birth cohort effect on East Asian supranational identity. This paper also explores how national identity is related with supranational identity among Koreans. Using the 2008 CCGA-EAI survey, we analyze the determinants of supranational East Asian identity. The results suggest several interesting findings. Age and national identity have positive effects on East Asian identity. Among generational cohorts, the democratization cohort were less likely than other cohorts to have East Asian identity. These findings suggest several implications. First, in Korea, unlike other countries in the Western world, the older tend to have stronger regional identity than the younger do. Second, unlike the existing literature, this paper finds that strong national identity (pride) is complementary, rather than substitutive, to supranational regional identity. This warrants further systematic research on the microfoundation on the relationship between regional integration and nationalism in Northeast Asia.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.41 no.4
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• pp.9-21
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• 2004

In this paper, we proposed the image hiding method which decreases calculation amount by encrypt partial data using discrete wavelet transform and linear scale quantization which were adopted as the main technique for frequency transform in JPEG2000 standard. Also we used the chaotic system which has smaller calculation amount than other encryption algorithms and then dramatically decreased calculation amount. This method operates encryption process between quantization and entropy coding for preserving compression ratio of images and uses the subband selection method and the random changing method using the chaotic system. For ciphering the quantization index we use a novel image encryption algerian of cyclically shifted in the right or left direction and encrypts two quantization assignment method (Top-down/Reflection code), made change of data less. Also, suggested encryption method to JPEG2000 progressive transmission. The experiments have been performed with the proposed methods implemented in software for about 500 images. consequently, we are sure that the proposed are efficient image encryption methods to acquire the high encryption effect with small amount of encryption. It has been shown that there exits a relation of trade-off between the execution time and the effect of the encryption. It means that the proposed methods can be selectively used according to the application areas. Also, because the proposed methods are performed in the application layer, they are expected to be a good solution for the end-to-end security problem, which is appearing as one of the important problems in the networks with both wired and wireless sections.

• The Journal of Korean Philosophical History
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• no.32
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• pp.395-432
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• 2011

The purpose of this study is (i) to explore arguments of post-kohlbergian approach in moral psychology and; (ii) to analyze Blasi's and Lapsley's positions regarding the relationship between moral philosophy and psychology in terms of reflective reasoning and; (ⅲ) to suggest their's implication concerning the future development of moral identity theory. Moral identity theory has emerged as an alternative approach of the Kohlberg's moral development theory. Theorists of moral identity theory commonly criticize Kohlberg's theory as a philosophical psychology and insist the autonomy of moral psychology. However, one can find different positions within this trend, especially concerning he meaning and role of the reflection in moral functioning. Blasi emphasizes the importance of the reflective reasoning of moral agent, while Lapsley supports moral automacy contrary to Kohlberg's phenomenalism. Although Blasi had been negative about building moral psychology based on the moral philosophy, he has articulated the moral identity theory based on the concept of free will by Frankfurt. However, recently he criticizes intuitionist theory of Haidit and suggests the notion of the moral agent with the skill of reflective reasoning, or post-conventional thinking in Kohlberg's terms. Blasi's perspective of moral identity has two version. The one emphasizes the moral understanding which means strong evaluation, while the other refers to reasoning with weak evaluation. This leads to an inevitable inner contradiction within his theory of moral identity. Lapsley considers moral identity as a heuristic idea and suggests moral chronic as a new model of moral identity. This model is based on the social cognitive theory. His social cognitive model of moral personality provides the account for implicit, tacit, and automatic of moral functioning, while reflecting the core of moral identity. Lapsley suggests that moral function involves conscious and unconscious processes. The former occurs in normal situations of life, while the latter in rare and unusual situations. He does not highlight reasoning in moral functioning as Blasi do. In consequence, I will argue the notion of the moral agent with the skill of reflective reasoning, or post conventional thinking in Kohlberg's terms in the moral functioning like Gibbs and Turiel positions in the Journal of Moral Education' s 2008 special issue. Moral philosophy and psychology should be in complementary relations. It means we explore not only more interdisciplinary researches on the moral functioning, but also researches based on the moral philosophy.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.6C
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• pp.648-658
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• 2003

As the usage of image/video contents increase, a security problem for the payed image data or the ones requiring confidentiality is raised. This paper proposed an image encryption methodology to hide the image information. The target data of it is the result from quantization in wavelet domain. This method encrypts only part of the image data rather than the whole data of the original image, in which three types of data selection methodologies were involved. First, by using the fact that the wavelet transform decomposes the original image into frequency sub-bands, only some of the frequency sub-bands were included in encryption to make the resulting image unrecognizable. In the data to represent each pixel, only MSBs were taken for encryption. Finally, pixels to be encrypted in a specific sub-band were selected randomly by using LFSR(Linear Feedback Shift Register). Part of the key for encryption was used for the seed value of LFSR and in selecting the parallel output bits of the LFSR for random selection so that the strength of encryption algorithm increased. The experiments have been performed with the proposed methods implemented in software for about 500 images, from which the result showed that only about 1/1000 amount of data to the original image can obtain the encryption effect not to recognize the original image. Consequently, we are sure that the proposed are efficient image encryption methods to acquire the high encryption effect with small amount of encryption. Also, in this paper, several encryption scheme according to the selection of the sub-bands and the number of bits from LFSR outputs for pixel selection have been proposed, and it has been shown that there exits a relation of trade-off between the execution time and the effect of the encryption. It means that the proposed methods can be selectively used according to the application areas. Also, because the proposed methods are performed in the application layer, they are expected to be a good solution for the end-to-end security problem, which is appearing as one of the important problems in the networks with both wired and wireless sections.