• 대한수학회논문집
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• 제30권3호
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• pp.313-325
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• 2015

An H-magic labeling in a H-decomposable graph G is a bijection $f:V(G){\cup}E(G){\rightarrow}\{1,2,{\cdots},p+q\}$ such that for every copy H in the decomposition, $\sum{_{{\upsilon}{\in}V(H)}}\;f(v)+\sum{_{e{\in}E(H)}}\;f(e)$ is constant. f is said to be H-V -super magic if f(V(G))={1,2,...,p}. In this paper, we prove that complete bipartite graphs $K_{n,n}$ are H-V -super magic decomposable where $$H{\sim_=}K_{1,n}$$ with $n{\geq}1$.

• 한국소음진동공학회논문집
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• 제19권10호
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• pp.1034-1042
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• 2009

In this paper, the magic formula model was applied for a friction damper in a drum-type washing machine. To describe characteristics of the hysteretic damping force, Physical tests were first carried out to get experimental results using an MTS machine. Then, parameters for the magic formula model were determined from the experimental curves. The ADAMS and MATLAB programs were used for the multibody modeling of the damper and process for parameter identification. The model of drum-type washing machine was applied for a dynamic model of friction damper, in which the accuracy of the proposed damper model was verified.

• 대한수학회보
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• 제59권3호
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• pp.617-642
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• 2022

For positive integers n and d with d < n, an n × n array A based on 𝒳 = {0, 1, …, nd} is called a sparse anti-magic square of order n with density d, denoted by SAMS(n, d), if each non-zero element of X occurs exactly once in A, and its row-sums, column-sums and two main diagonal-sums constitute a set of 2n + 2 consecutive integers. An SAMS(n, d) is called regular if there are exactly d non-zero elements in each row, each column and each main diagonal. In this paper, we investigate the existence of regular sparse anti-magic squares of order n ≡ 1, 5 (mod 6), and prove that there exists a regular SAMS(n, d) for any n ≥ 5, n ≡ 1, 5 (mod 6) and d with 2 ≤ d ≤ n - 1.

• 한국정밀공학회지
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• 제22권10호
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• pp.39-48
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• 2005

As the industrial development is accelerated, a new machining process and system are keenly required to achieve super precision surface finish. Especially to get ground surface finish fer complicated and narrow inner shape of molds, it is impossible with the existing methods so that a new method is being required to be developed. A new material, called Magic(MAGnetic Intelligent Compounds), is finally made and it is called Magic machining that uses this material. There is a way to make a material as follows, the mixture of magnetic particles, bonding material and particles of abrasive grain should be melt down by proper heat, and then this mixture put in a mold and cool down in magnetic field which has a uniform direction. This new polishing method is spotlighted as an excellent solution to the existing problems. However it hasn't reported any study about the influence of the machining conditions of polishing velocity, amplitude and polishing pressure to the surface roughness yet. This study would examine closely the influence of polishing conditions of the Magic polishing tool to the surface finish to decide the optimum polishing condition and to standardize the Magic polishing work.

• 한국기계가공학회지
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• 제20권11호
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• pp.92-99
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• 2021

Agricultural tractors drive and operate both off-road and on-road. Tire-road interaction significantly affects the tractive performance of a tractor, which is difficult to predict numerically. Many empirical models have been developed to predict the tractive performance of tractors using the cone index, which can be measured through simple tests. However, a magic formula model that can determine the tractive performance without a cone index can be used instead of traditional empirical models as the cone index cannot be measured on asphalt roads. The aim of this study was to predict the tractive performance of a tractor using the magic formula tire model. The traction force of the tires on an asphalt road was measured using an agricultural tractor. The dynamic wheel load was calculated to derive the coefficients of the traction-slip curve using the measured static wheel load and drawbar pull of the tractor. Curve fitting was performed to fit the experimental data using the magic formula. The parameters of the magic formula tire model were well identified, and the model successfully determined the coefficient of traction of the tractor.

• 월간포장계
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• 통권229호
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• pp.60-63
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• 2012

• 정보보호학회논문지
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• 제9권2호
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• pp.13-24
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• 1999

전자현금은 기본적으로 은행의 서명문이다. 전자 현금 시스템에 분배 개념을 추가함으로써 전자현금의 안정성을 증가시킬 수 있고, 익명으로 발행된 전자 현금을 추적 할 수 있다. 매직 잉크 방식은 사용자에 익명으로 서명문을 발급할 수 있고 추후에 사용자가 불법적으로 전자 현금을 사용하는 경우 이를 추적 할 수 있는 서명 기법이다. 그러나 매직 잉크 서명 기법에도 믿음을 집중하는 문제가 제기되며, 이 경우 분배된 매직 잉크 서명기법(Distributed Mageic Ink Signature Scheme)이 사용되어야 한다. 본 논문에서는 분배 개념을 적용한 DSS 매직 잉크 서명을 기술하고, 분배 개념을 적용한 KCDSA 매직 잉크 서명을 제안하고, DSS방식과 KCDSA 매직 잉크 서명 방식의 계산량을 서로 비교 분석하였다. Electronic cash is a digital signature issued by bank. If the concept of the distributed secret sharing and magic ink signature is introduced in the existing electronic cash system we can increase the security level and the availability of electronic cash system and trace the electronic cash itself and the owner of electronic cash which was issued anonymously to a user in case of illegal usage of electronic cash by users. If the trust is concentrated on one bank system. the problem of misuse of bank can be occurred. To solve this problem, the distributed secrete sharing scheme need to be introduced in electronic cash system. In this paper We propose a DSS(Digital Signature Standard) distributed magic ink signature scheme and a KCDSA(Korea Certificate-based Digital Signature Algorithm) distributed magic ink signature scheme using a verifiable secret sharing method. and we compare two methods with respect to the required computation amount for the generation of magic-ink signature.

• 복식
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• 제65권1호
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• pp.1-14
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• 2015

Magic realism, which originated in the culture of Central and South America, creates a fantastic fictional word by linking unrelated incidents using magical. The purpose of this study was to analyze Tarsem Singh's design characteristics that are based on magic realism in his movies, "The Cell" and "The Fall", and to highlight the artistic values appearing in the films. The research was conducted by observing the characteristics and concept of magic realism based on literature and preceding research, and discovering how Singh expressed these creatively and experimentally within the costumes in his films. The results of the study were as follows: Firstly, magical, legendary and symbolic characteristics appear within the fantasy of magical realism, and common techniques within film costuming include repetition of similar objects, solid silhouettes within scenes, and various decorative materials used for fantastic expression. Secondly, regarding ideality, the destruction of previous ideas and recreation of the present were found with materials and details used in film costuming to destroy previous ideas. Expressions of character through external decoration and depiction of living things as not living were also found. Thirdly, reiteration showed the coexistence of history and legend, reality and fantastic elements, and arrangement of opposing elements.

• 패션비즈니스
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• 제25권1호
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• pp.65-79
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• 2021

Apparel fairs are business platforms specializing in selling fashion products. As the largest apparel fair in the United States and with the highest number of animated buyers in the entire world, the Las Vegas Magic Show utilizes this distribution platform to the greatest extent by sustaining over 90,000 buyers annually. In accordance, the exhibiting companies also participate in commercial functions by striving to promote brand awareness to consumers as they carefully plan to increase actual sales and secure new customers. Domestically, numerous organizations such as the Trade Promotion Administration, the Korean Apparel Association, and KOTRA(Korea Trade-Investment Promotion Agency) present similar international apparel fairs to strongly encourage domestic companies to exhibit at international apparel fairs. However, many companies fail to succeed in achieving actual results, which frequently causes them to attend the shows for the short term only. This may occur due to the lack of research on apparel order-writing exhibitions by academia and proactive workers. This research study was based on the careful observation and analysis of the three most recent years of Magic exhibitor attendees' operations and changes to accomplish the final objective of presenting a basic guideline to attend an international apparel exhibition.

• 한국멀티미디어학회:학술대회논문집
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• 한국멀티미디어학회 2000년도 추계학술발표논문집
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• pp.485-488
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• 2000

우리는 일상 생활을 통해 갖가지 경우에 있어 수없이 많은 선택을 수행하고 있다. 이들 중 몇몇은 누구나 알 수 있도록 알리기도 하고 또 몇몇은 선택되어진 특성 인원들이 알 수 있게 할 수 있다. 이러한 선택의 형태는 암호 프로토콜 상에서, 이 프로세서와 관련된 모델링 기법들을 통해 많은 진척이 보여지고 있다. 그러나 보안 서비스 상에서 익명성을 가지는 구체적인 선택 프로토콜에 대해서는 아직 많은 논의가 필요한 상태이다. 난 논문에서는 네트워크 상에서 익명성을 제공하는 안전한 선택 기법인 "Magic Sticker" 기법을 제안한바 이와 관련된 응용 분야는 전자 투표, 전자 화폐, 입찰 계약 등과 같이 다앙한 분야에서 적용 가능하며, 특히 내용의 공개에 따른 자신의 선택 부분을 안전하게 보호할 수 있다는 특징을 가지고 있다.