• 호남수학학술지
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• 제32권1호
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• pp.1-16
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• 2010

By using the generalized operator method given by Burchnall and Chaundy in 1940, the authors present one-dimensional inverse pairs of symbolic operators. Many operator identities involving these pairs of symbolic operators are rst constructed. By means of these operator identities, 11 decomposition formulas for the generalized hypergeometric $_4F_3$ function are then given. Furthermore, the integral representations associated with generalized hypergeometric functions are also presented.

• 대한전자공학회논문지
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• 제24권6호
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• pp.1080-1086
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• 1987

SLAGEN, a system for symbolic cell layout based on artificial intelligence approach, takes as input a transistor connection description of CMOS standard cells and environment information, and outputs a symbolic layout description. SLAGEN performas transistor grouping by a heuristic search method, in order to minimize the number of separations, and then performs group reordering and transistor reordering with an eye toward minimizing routing. Next, SLAGEN creates a rough initial routing in order to guarantee functionality and correctness, and then improve the initial routing by a rule-based approach.

• 복식
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• 제64권8호
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• pp.179-190
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• 2014

In traditional costume, colors have been used to express the religion, society, culture, custom, and other aspects of a country. This is mainly due to color being the most conspicuous visual factor of a costume. In Thailand, there is a symbolic color for each day of the week, and the purpose of this study is to contribute to deeper understanding of the Thailand culture in regards to color and its costumes. The study method is as follows: literatures and photos were researched for social and religious background of the seven days Buddha history, which was the source of the color a day culture, symbols and significance of each Buddha were studied and precedent studies were reviewed. The study attempted to investigate the effect of the symbolic color on costumes as it passed down from generations. Originally, the symbolic colors of seven days Buddha in Thailand was a religious component that was exclusive to the upper class. However, it has expanded to the lower classes today. Currently, it obtains an aspect of health and wealth gospel for oneself or others as well as being used to express individual personality because people regard certain color as their symbolic color.

• 한국융합학회논문지
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• 제9권4호
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• pp.127-135
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• 2018

인간은 선과 악을 함께 가지고 있기 때문에 양면적이라 할 수 있다. 이러한 인간은 악을 더욱 구체화하기 위해 악을 형상화하여 조형적 요소로 악의 상징물을 만들었다. 이에 본 연구자는 악의 개념부터 인간이 가지고 있는 악에 본질이 상징물로 표현되었을 때 나타나는 조형성에 관하여 조사 분석해 보고자 하였다. 조형성의 분류 항목을 구축하여 설문지를 작성하여 다음과 같은 분석의 결과를 도출하였다. 구성유형에서는 문자보다는 그림 또는 기호로 표현되었으며, 표현대상에서는 신화 속 인물과 동물의 형태로 나타났다. 레이아웃에서는 방사형이 가장 많이 나타났으며 묘사방법에서는 단순성과 복잡성의 형태로 외곽형태는 원형이 가장 높게 나타났다. 이러한 구성유형의 항목들이 높은 점수를 보인 상징물은 서로간의 조형적인 상관관계로 그려지고 사용되었으며, 발전해 왔다는 것을 알 수 있었다.

• 정보보호학회논문지
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• 제27권4호
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• pp.811-820
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• 2017

최근 소프트웨어 자동화 기술 연구는 단일 경로의 테스트 케이스 생성뿐만 아니라, 다양한 테스트 케이스를 통해 취약점으로 도달할 수 있는 최적화된 경로를 파악하는 것에 중점을 두고 있다. 이러한 자동화 기술 중 Dynamic Symbolic Execution(이하, DSE) 기술이 각광 받고 있지만, 현재 대부분의 DSE 기술 적용 연구는 리눅스 바이너리 혹은 특정 모듈 자체만을 대상으로 적용하는 데 그치고 있는 실정이다. 하지만 대부분의 소프트웨어의 경우 입력 파일을 기반으로 작업이 수행되고, 또 이러한 과정에서 취약점이 다수 발생하고 있다. 따라서 본 논문은 소프트웨어 안전성 검증을 위한 입력 파일 기반 동적 기호 실행 방법을 제안한다. 실제 바이너리 소프트웨어 3종에 적용한 결과 제안하는 방법을 통해 효과적으로 해당 지점에 도달하는 테스트 케이스를 생성할 수 있었다. 이는 DSE 기술이 실제 소프트웨어 분석의 자동화에 활용될 수 있음을 보여준다.

• 대한기계학회논문집A
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• 제33권12호
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• pp.1433-1441
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• 2009

In multibody dynamic analysis, one of the most important problems is to reduce computation times for real-time simulation. This paper presents the derivation procedure of equations of motion of a 6${\times}$6 autonomous vehicle in terms of chassis local coordinates which do not require coordinates transformation matrix to enhance efficiency for real-time dynamic analysis. Also, equations of motion are derived using the VT(velocity transformation) technique and symbolic computation method coded by MATLAB. The Jacobian matrix of the equations of motion of a system is derived from symbolic operations to apply the implicit integration method. The analysis results were compared with ADAMS results to verify the accuracy and approve the feasibility of real time analysis.

• 한국의류학회지
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• 제38권4호
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• pp.495-505
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• 2014

This study investigated the type of fashion brand concepts and derived the components of fashion brand concepts. A total of 125 brand concept texts of women's wear brands were collected from "2012/2013 Korea Fashion Brand Annual" (S. M. Kim, 2012). A qualitative research method was employed. To investigate the types of fashion brand concepts, the texts were classified into three types such as functional, symbolic, and experiential concepts, and four complex types such as functional/symbolic, functional/experiential, symbolic/experiential, and functional/symbolic/experiential concepts. Open coding and axial coding provided the components of fashion brand concepts. The results were as follows. First, an investigation of the types of fashion brand concepts indicated differences in the types of fashion brand concepts and the types of general product brand concepts. One content of a fashion brand concept could be interpreted as more than two concept types; consequently, many fashion brand concepts did not fit the notion of the types of general product brand concept. Most fashion brand concepts simultaneously encompassed more than two types of brand concepts at once. Second, the components of fashion brand concepts consisted of 55 subjects, 7 sub-categories (physical/intrinsic product characteristics, symbolic/conceptual product characteristics, target demographics, target consumer behavior, brand capability, brand values, and brand management/marketing) and 3 categories (product, target consumer, and brand).

• 한국실내디자인학회논문집
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• 제21권4호
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• pp.3-11
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• 2012

The purpose of the study was to find out design problems of grand chapel of the Protestant church and to set analysis frame based on theoretical study on abstract symbolism and investigate cases and to give reference of abstract symbolism expression of design of the chapel. The findings were as follow: Introduction of the light was found to be the most outstanding among abstract symbolic factors, and metaphor was commonly used to express abstract symbols. First, 1) Introduction of the light was found to be the most outstanding at application of abstract symbolic factor of modern Protestant church to be the highest among pastors, office bearers, believers and non-Christians. 2) The metaphor was found to be the most noticeable among abstract symbolic expressions. Second, the findings of questionnaire survey was: The findings of questionnaire of not only abstract symbolic expression factor but also symbolic expression method was not to cognize ideas of pastor, office bearers, believers and designers often. This was because abstract symbolism was made from point of view of designers. Therefore, abstract symbolic expression factors of grand chapel of modern Protestant church, for instance, effective introduction of the light, light quoting the Bible sayings, material, color and shapes, etc should be used with metaphor and symmetry to give Christians value of symbol and to hide meaning of symbolic values to non-Christians who do not know contents of the Bible.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권5호
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• pp.1463-1478
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• 2012

Based on the theory of local-world network, the composition self-similarity (CSS) of network traffic is presented for the first time in this paper for the study of DoS detection. We propose the concept of composition distribution graph and design the relative operations. The $(R/S)^d$ algorithm is designed for calculating the Hurst parameter. Based on composition distribution graph and Kullback Leibler (KL) divergence, we propose the composition self-similarity anomaly detection (CSSD) method for the detection of DoS attacks. We evaluate the effectiveness of the proposed method. Compared to other entropy based anomaly detection methods, our method is more accurate and with higher sensitivity in the detection of DoS attacks.

• 정보처리학회논문지A
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• 제15A권1호
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• pp.45-52
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• 2008

본 논문에서는 심볼릭 링크 공격에 취약한 코드를 정의하고 프로그램 분석 기법을 사용하여 이를 검출하는 방법을 제안한다. 심볼릭 링크 공격을 해결하기 위한 기존의 방법들은 심볼릭 링크 공격을 방어하기 위한 기법들로써 임시 파일에 대한 접근 시 공격이 이루어졌는지에 대한 적절한 검사가 이루어져야 하나, 이를 간과할 경우 공격의 위험에 노출되게 된다. 본 논문에서 제안하는 방법은 심볼릭 링크 공격에 취약한 부분을 자동으로 모두 검출함으로써 프로그래머가 심볼릭 링크 공격을 안전하게 방어할 수 있도록 한다. 제안하는 방법은 취약점 분석을 위해서 기존의 타입 시스템에 새로운 타입 한정자를 추가하고, 추가된 타입 한정자를 고려한 타입 검사를 통해서 심볼릭 링크 공격의 취약점을 식별한다. 제안하는 방법은 자동으로 심볼릭 링크 공격의 취약점을 모두 검출할 수 있기 때문에, 프로그래머가 취약한 것으로 식별된 코드에 대해서만 기존의 방어 기법을 적용하도록 함으로써 프로그램을 전반적으로 검토하거나 수정해야 하는 부담을 줄여준다는 장점을 가진다. 제안하는 방법을 널리 알려진 실용적인 프로그램을 대상으로 실험해 본 결과 전체 fopen() 함수 중 일부만 심볼릭 링크 공격에 취약한 것으로 분석되었으며, 이는 제안한 방법이 프로그래머의 부담을 줄이는데 유용함을 보여준다.