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Self-Similarity in Fractal and Non-Fractal Networks
김진섭,강병남,김두철,고광일 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.2
We study the origin of scale invariance (SI) of the degree distribution in scale-free (SF) networks with a degree exponent γ under coarse graining. A varying number of vertices belonging to a community or a box in a fractal analysis is grouped into a supernode, where the box mass M follows a power-law distribution, PmM ~ M-\eta. The renormalized degree k′ of a supernode scales with its box mass M as k′ ~ Mθ. The two exponents η and θ can be nontrivial as η ≠ γ and θ < 1. They act as relevant parameters in determining the self-similarity, i.e., the SI of the degree distribution, as follows: The self-similarity appears either when γ ≠ η or under the condition θ = η-1)/(γ-1) when γ > η, irrespective of whether the original SF network is fractal or non-fractal. Thus, fractality and self-similarity are disparate notions in SF networks.
김진섭,류청산 한국실과교육학회 2005 한국실과교육학회지 Vol.18 No.3
The purpose of this study was to examine elementary school student's level of KAP towards environmental pollution. The subjects were 850 students selected equivalently from each group attending in 5th or 6th grade in an elementary school.To achieve the goal, it selected 20 questions through difficulty test and discrimination test in the knowledge (K) section. The reliability of 10 general questions was shown to be .71, The credibility of attitude (A) section was .93 and the section of practice (P) was .84.The conclusion of this research is that, general average of KAP turned out to be 3.99 / 5.00. The sections of K, A was relatively higher, and P section was lover. It proved that four independent variables were in relation to dependent variable, that is student's practice, in amount of 32.5% as it conducted correlation analysis. The attitude of student was the highest (.315) in β values, representing the relative significance between sub-features, followed by in the sequence of parent's level of practice, student's environmental consciousness, teacher's level of practice.
김진섭 대진대학교 2000 大眞論叢 Vol.8 No.-
This paper discusses about the current financial environment and various problems of Korea's financial industry. Since its exchange crisis in 1997, Korea's financial industry has been continuously exposed to external competition and serious internal vulnerability. Even Korean government pursed its policy toward structural reform of financial institution, the achievement is not worthy of attention yet. Under the significant recognition of financial industry's fundamental weakness, this paper suggests some policy implications for competitiveness
金震燮,李中雨 慶北大學校 師範大學 地理敎育科 1995 地理敎育 Vol.8s No.-
The purpose of this study is to provide basic material needs, and efficient ways to develop the environmental education of the social studies in Junior High School. This study has been made with two different investigative methods. First method is the content analysis of the current curriculum of environmental education in Junior High School, and second method is investigation of environmental consciousness in Junior High School students. The major findings are as follows : 1. The environmental education is taught in first and third grade in the Junior High School. It is purpose to make the students perceive the importance on "the Natioal Land Development" and "the Enviropmental Preservation" with their relationship : however, the value and classification of these contents of education is not reveal because of being behind learning time and lack of the teaching materials and also the failure of continue education throughout the elementary school to the high school. 2. The Junior High School students perceive the environmental information through the mass communication, but their comprehension of the environmental pullution is low in terms of understanding. 3. The Junior High School students recognize the environmental problems seriously, and they thinks the water pollution as the most serious problem in the environmental problems. There is different understanding of this matter between in the urban students and the rural students. 4. The Junior High School students perceive the seriousness of the environmental problems, but their attitude and performance on the environmental preservation is low. They prefer to choose good environment to the hands of the better economic development. 5. The environmental education in the Junior High School if deal by the Studies, Morals, and Science. The students have great interest in the visual materials among the environmental teaching materials ; therefore, the environmental education must be emphasizing on the extra- curricular activities such as "CA", "HR", and "activities for the protection of environment". 6. The teacher who charge to teach the environmental education should receive moretraining on this subject, and it is necessary to develop the suitable curriculum for the environmental education.
김진섭 대진대학교 2001 大眞論叢 Vol.9 No.-
This paper discusses the digital economy, internet business and the M&A between internet business firms. It is no doubt that the most noticeable innovation in 20th Century is the digital revolution. Since its first revolution in agricultural sector, the mankind had experienced second industrial revolution in mid 18C. Nowadays the digital revolution based on knowledge and information technology had greatly contributed on the miracle of New Economy. In this paper, the concept and the recent trend of digital economy are introduced. For the discussion of the characteristics of internet business, such as network externality, increasing return to scale, the synergy effect are briefly mentioned. The most important part of the paper is concerned about the M&A of internet business firms. For the purpose, some major cases in American internet business are discussed, while the recent M&A cases in Korea are also covered in the later part of the paper. The paper predicts that the most important leading industry in 21C will be internet business without doubt by rapidly expanding network through globalization and informatization, and the M&A between internet business firms is inevitable phenomenon under the consideration of specific characteristics of internet business.