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이병수(Lee, Byoung-Soo) 한국소음진동공학회 2008 한국소음진동공학회 논문집 Vol.18 No.4
An automotive windshield wiper system is modeled mainly for vibration analysis purpose. The model is composed of solid links, ideal joints, imperfect joints to simulate unavoidable manufacturing defects and bushings having stiffness, contact between a wiper blade and a wind screen glass, friction, a spring and an actuator. Main stream of wiper dynamics analysis has been obtaining a closed form of system of equations using Newton's or Lagrange's formula and doing a numerical simulation study to understand and predict the behavior of it. However, the modeling process is complex since a wiper system is of multibody and a contact problem occurs. When imperfection, such as dead zone of a joint and stiffness of a rubber bushing, should be included, the added complexity makes the modeling difficult. Since the imperfection is understood as main cause of problematic vibration, the dynamics model of a wiper system aiming vibration analysis should include such unavoidable manufacturing defects in the model. An open form of dynamic model of a automotive windshield wiper system with imperfect joints using a commercial software is obtained and a simulation analyssis is conducted for vibration reduction study.
전통무예문화를 활용한 지역축제 방문객의 브랜드자산 인식이 지역이미지, 브랜드태도에 미치는 영향
이병수(Byoung Soo Lee) 세계태권도문화학회 2024 세계태권도문화학회지 Vol.15 No.1
The purpose of this The purpose of this study was to investigate the relationship between regional image and brand attitude on brand equity perception by participants through the value of a regional festival utilizing traditional martial arts culture. As a result, first, it was found that the higher the brand quality, brand image, and brand awareness factors of the festival brand assets, the higher the cognitive image and emotional image. Second, the higher all four factors of festival brand assets, in the order of brand quality, brand value, brand image, and brand awareness, were found to have a greater influence on brand attitude. Third, the higher both the cognitive image and emotional image factors of the regional image, the higher the brand attitude.These results confirmed that it is very important to discover, develop, and brand the traditional martial arts culture representing the region, and that brand assets are especially important for regional image and brand attitude.
일반 순서 통계량을 이용한 소프트웨어 신뢰확률 중첩모형에 관한 베이지안 접근에 관한 연구
이병수(Lee Byoung Soo),김희철(Kim Hee Cheul),백수기(Paik Su Ki),정관희(Chung Kwan Hee),윤주용(Yoon Ju Yong) 한국정보처리학회 1999 정보처리학회논문지 Vol.6 No.8
The complicate software failure system is defined to the superposition of the points of failure from several component point process. Because the likelihood function is difficulty in computing, we consider Gibbs sampler using iteration sampling based method. For each observed failure epoch, we applied to latent variables that indicates with component of the superposition mode. For model selection, we explored the posterior Bayesian criterion and the sum of relative errors for the comparison simple pattern with superposition model. A numerical example with NHPP simulated data set applies the thinning method proposed by Lewis and Shedler[25] is given, we consider Goel-Okumoto model and Weibull model with GOS, inference of parameter is studied. Using the posterior Baysian criterion and the sum of relative errors, as we would expect, the superposition model is best on model under diffuse priors.
정보보호 : 안전성이 높은 다변수 Knapsack 암호시스템
이병수(Lee Byoung Soo) 한국정보처리학회 1995 정보처리학회논문지 Vol.2 No.4
고도의 정보화 사회에서 데이터의 내용변경, 중요한 데이터의 불법적인 유출, 순서 변경 그리고 미확인 송신자와 수신자등에 의하여 항상 위협을 받음으로써 데이타의 안전성이 요구되고 있다. 본 연구에선느 컴퓨터 통신의 안전을 위한 다변수 Knapsack 암호시스템을 제안하였다. 이 시스템은 기존의 Knapsack 암호시스템보다도 간단하면서 높은 안전성을 갖는다. 그리고 제안된 암호 시스템은 초증가 벡터의 각 요소를 변형하여 다변수 다항식으로 표현한 것을 암호벡터로 구성한다. 암호문의 복호는 비밀의 정수와 초증가벡터를 사용하면 평문이 구해진다. 따라서 이 암호의 안전성은 비밀의 정수를 다변수 다항식으로 나타내는 암호벡터에 대입할 때 암호벡터가 초증가벡터로 되는 근을 구하는 것의 어려움에 근거하고 있다. 제안된 다변수 Knapsack 암호시스템의 타당성이 컴퓨터 시뮬레이션을 통하여 입증되었다. In the high information societies, the requirement of encryption security is increasing so as to protect information from the threat of attacks by illegal changes of data, illegal leakage of data, disorder of data sequences and the unauthorized sender and an unauthorized receiver etc. In this paper, multivariable knapsack cryptosystem is proposed for security of computer communication. This system is securer and simpler than the conventional knapsack cryptosystems. And, proposed cryptosystem composed what represented each element of superincreasing vector with multivariable polynomial after transforming it of ciphervector. For the deciphering of ciphertext, the plaintext is determined by using the integers of secret and the superincreasing vector of secret key. Thus, the stability of this cryptosystem is based on the difficulty of obtaining the root that ciphervector becomes the superincreasing vector, in substituting the integers of secret for ciphervector to represent with the miltivariable polynomial. The propriety of proposed multivariable knapsack cryptosystem was proved through computer simulation.