• Title/Summary/Keyword: magic

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A Symmetric Key Cryptography Algorithm by Using 3-Dimensional Matrix of Magic Squares

  • Lee, Sangho;Kim, Shiho;Jung, Kwangho
    • Proceedings of the Korea Information Processing Society Conference
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    • 2013.11a
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    • pp.768-770
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    • 2013
  • We propose a symmetric key based cryptography algorithm to encode and decode the text data with limited length using 3-dimensional magic square matrix. To encode the plain text message, input text will be translated into an index of the number stored in the key matrix. Then, Caesar's shift with pre-defined constant value is fabricated to finalize an encryption algorithm. In decode process, Caesar's shift is applied first, and the generated key matrix is used with 2D magic squares to replace the index numbers in ciphertext to restore an original text.

REVERSE EDGE MAGIC LABELING OF CARTESIAN PRODUCT, UNIONS OF BRAIDS AND UNIONS OF TRIANGULAR BELTS

  • REDDY, KOTTE AMARANADHA;BASHA, S. SHARIEF
    • Journal of applied mathematics & informatics
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    • v.40 no.1_2
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    • pp.117-132
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    • 2022
  • Reverse edge magic(REM) labeling of the graph G = (V, E) is a bijection of vertices and edges to a set of numbers from the set, defined by λ : V ∪ E → {1, 2, 3, …, |V| + |E|} with the property that for every xy ∈ E, constant k is the weight of equals to a xy, that is λ(xy) - [λ(x) + λ(x)] = k for some integer k. We given the construction of REM labeling for the Cartesian Product, Unions of Braids and Unions of Triangular Belts. The Kotzig array used in this paper is the 3 × (2r + 1) kotzig array. we test the konow results about REM labelling that are related to the new results we found.

A Scalable Resource-Lookup Protocol for Internet File System Considering the Computing Power of a Peer (피어의 컴퓨팅 능력을 고려한 인터넷 파일 시스템을 위한 확장성 있는 자원 탐색 프로토콜 설계)

  • Jung Il-dong;You Young-ho;Lee Jong-hwan;Kim Kyongsok
    • Journal of KIISE:Information Networking
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    • v.32 no.1
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    • pp.89-99
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    • 2005
  • Advances of Internet and rC accelerate distribution and sharing of information, which make P2P(Peer-to-Peer) computing paradigm appear P2P computing Paradigm is the computing paradigm that shares computing resources and services between users directly. A fundamental problem that confronts Peer-to-Peer applications is the efficient location of the node that stoles a desired item. P2P systems treat the majority of their components as equivalent. This purist philosophy is useful from an academic standpoint, since it simplifies algorithmic analysis. In reality, however, some peers are more equal than others. We propose the P2P protocol considering differences of capabilities of computers, which is ignored in previous researches. And we examine the possibility and applications of the protocol. Simulating the Magic Square, we estimate the performances of the protocol with the number of hop and network round time. Finally, we analyze the performance of the protocol with the numerical formula. We call our p2p protocol the Magic Square. Although the numbers that magic square contains have no meaning, the sum of the numbers in magic square is same in each row, column, and main diagonal. The design goals of our p2p protocol are similar query response time and query path length between request peer and response peer, although the network information stored in each peer is not important.

웹케시사 Magic$\@$NET 자판기 시스템

  • 한국자동판매기공업협회
    • Vending industry
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    • v.2 no.7 s.8
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    • pp.99-103
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    • 2003
  • 최근 자판기 분야에 있어 카드, 모바일 등을 이용한 전자화폐 결제시스템은 하나의 대세적 흐름을 형성하고 있다. 무엇보다 편리한 결제수단이라는 점과 매출증대 효과 등을 고려할 때 전자화폐자판기는 앞으로 확산속도가 무척 빨라질 것이다. 전자화폐자판기 시대를 향해 발 빠른 행보를 내딛고 있는 상황에서 과연 전자화폐가 자판기를 통해 어떻게 결제가 이루어지고 어떠한 운영효율을 거둘 수 있는지 세부적으로 살펴보는 것도 의미 있는 일일게다. 새롭게 기획된 뉴 테크놀로지에서는 웹케시사의 Magic@NET 자판기 시스템에 대해 자세히 살펴 보았다.

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The Relationship between Dressing culture and Magic culture, Ritual culture in China

  • Hengxian TU
    • Journal of the Korea Fashion and Costume Design Association
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    • v.7 no.2
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    • pp.171-176
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    • 2005
  • 본 연구는 역사문화의 입장에서 중국 복식문화의 원류에 관해 연구한 것으로 무속과 예약문화가 그 형성에 영향을 미친것을 밝혔다. 중국복식문화는 고대 주술문화에서 중요한 역할을 했을 뿐 아니라 상당한 비중을 차지하였다. 중국 복식문화의 성숙기와 서주때의 중국 예약문화의 형성은 매우 밀접한 상관이 있다. 예약문화의 표현에서 계급성을 내용으로 하고 형 식 성을 특징으로 하는 체제에서 중요한 작용을 하였다 동시 에 복식문화 자체도 이 시 기 에 아주 풍요롭게 발전하여 중국 문화의 견고한 기초를 확립하였다.

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Chemical Shift and Quadrupolar Interactions in Solids

  • Kim Jin-Eun
    • Journal of the Korean Magnetic Resonance Society
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    • v.10 no.1
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    • pp.1-37
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    • 2006
  • General expressions for solid state NMR lines are described for transitions under static, magic angle spinning, and variable angle spinning conditions in the case where the principal axis system for the anisotropic chemical shift tensor is noncoincident with that of the quadrupole coupling tensor. It is demonstrated that solid state NMR powder pattern simulation program VMAS based on the conventional grid point method of integrating over the Euler angle space is fast enough in comparison with the POWDER simulation package and Gauss-point method.

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Application-level Multicast Using Magic Square (MagicSquare를 이용한 애플리케이션 레벨 멀티캐스트)

  • 김강범;한동윤;손영성;김경석
    • Proceedings of the Korean Information Science Society Conference
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    • 2004.10c
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    • pp.589-591
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    • 2004
  • IP 멀티캐스트 기술은 지난 10여년동안 꾸준히 발전해 왔지만 라우터의 편재형 배치(Ubiquitous deployment)가 되지 않음으로 인해 네트워크 라우터가 패킷을 복사, 전달함으로서 종단 호스트와 네트워크 라우터 간에 부가적인 제어와 라우팅 프로토콜이 필요하게 되는 단점이 있다. 이에 대한 대안으로 현재 오버레이 네트워크를 이용한 애플리케이션 레벨 멀티캐스트가 많이 연구되고 있다. 본 논문에서는 P2P 오버레이 네트워크를 이용해 확장 (scalability)이 있고 참여지연(Join delay)이 적으면서 효율적인 트리를 구성할수 있는 애플리케이션 레벨 멀티캐스트를 제안한다.

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A Case Study for Developing the Mathematical Creativity in CNUE of Korea

  • Kim Soo-Hwan
    • Research in Mathematical Education
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    • v.9 no.2 s.22
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    • pp.175-182
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    • 2005
  • This paper will present two activity cases for developing mathematical creativity at The Center for Science Gifted Education (CSGE) of Chongju National University of Education of Korea. One is 'the magic card mystery'; the other is 'mathematicians' efforts to solve equations'.

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A study on magic labelling of Hadoguodo (하도구오도(河圖九五圖)의 magic labelling에 대한 연구)

  • Park, Kyo Sik
    • Journal for History of Mathematics
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    • v.33 no.6
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    • pp.315-325
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    • 2020
  • In this study, how Choi Seok-Jeong made Hadoguodo is presumed. Choi SeokJeong's Hadoguodo does not actually reflect the Hado. But it is verified that Hadoguodo reflecting Hado can be made. In addition, it is verified that Hadoguodo can be made so that not only the sum of the nine numbers of each square are all 207 but also the sum of the nine numbers in the horizontal and vertical directions are all 207.