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형대진,김승구,조현준,박경환 동아대학교 정보기술연구소 2006 情報技術硏究所論文誌 Vol.14 No.1
In this paper, we introduce the method for developing the mobile 3D game engine based on the WIPI platform which has been proposed as the mobile standard platform. Our game engine is designed so that it supports OpenGL-ES and JSR-184 that are mobile 3D graphic APIs. Our game engine has a mobile emulator operated on PC and SDK to support mobile programming in PC environments. Mobile 3D game developers can use the APIs at various levels. Also, the game engine is developed in modular in order to support various game genres.
RFID를 적용한 항공물류 SCM 시스템의 설계 및 구현
형대진,김승구,이재윤,조현준,박경환 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1
The present the information sharing among the subjects was not enough in Airway Logisctics Industry, because each subject use the independent system. The Airway Logistics Network is suggestion, but the Airway Logistics Network dose not operate with efficient connection, because each subject attached to the connection among the internal system. If the RFID system which one of Auto-ID systems is introduce into Airway Logistics, an efficient management of Airway Logistics will be possible. In this Paper, we introduce the RFID system into Airway Logistics SCM system for an efficient management and an efficient information sharing. We also develop Airway Logistics SCM system with priority given to Forwarder which is occupy an important position in Airway Logistics industry.
OpenGL에 기반한 전자부품 3D 그래픽 툴의 설계 및 구현
김승구,조현준,형대진,박경환 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1
Up to the present, we have used general 3D modelling tool for 3 dimensions visualization of electronic parts. If we use general 3D modelling tool, we are consumed many time and effort because it is not optimized modelling of electronic parts. Therefore we need technical 3D modelling tool for electronic parts. In this paper, in order to solve this problem, we develop the graphic tool that model and visualize the electronic parts as 3 dimensions.
全純美,姜興植,金興植,曺大鉉 인제대학교 1988 仁濟論叢 Vol.4 No.2
In these days of information-oriented society, the universities and the colleges in this country have promoted the computerizing their administration affairs for the purpose of the over-all efficiency and rationalization of their's. We report here upon the result of the computerizing about the below items, important area of the administration affairs, i) administration of the entrance examination. ii) administration of the school register. iii) administration of the properties. iv) administration of the student's grades. In the near future, we hope promoting the TIS construction of the INJE university, systematically and continuously.
Strong Large Deviations Theorems for the Ratio of the Independent Random Variables
Cho, Dae-Hyeon,Jeon, Jong-Woo The Korean Statistical Society 1994 Journal of the Korean Statistical Society Vol.23 No.2
In this paper, we prove a strong large deviations theorem for the ratio of independent randoem variables with error rate of $O(n^{-1})$. To obtain our results we use the inversion formula for the tail probability and apply the Chaganty and Sethuraman's (1985) approach.
Doubly penalized kernel method for heteroscedastic autoregressive datay
Cho, Dae-Hyeon,Shim, Joo-Yong,Seok, Kyung-Ha The Korean Data and Information Science Society 2010 한국데이터정보과학회지 Vol.21 No.1
In this paper we propose a doubly penalized kernel method which estimates both the mean function and the variance function simultaneously by kernel machines for heteroscedastic autoregressive data. We also present the model selection method which employs the cross validation techniques for choosing the hyper-parameters which aect the performance of proposed method. Simulated examples are provided to indicate the usefulness of proposed method for the estimation of mean and variance functions.
Mixed-effects LS-SVR for longitudinal dat
Cho, Dae-Hyeon The Korean Data and Information Science Society 2010 한국데이터정보과학회지 Vol.21 No.2
In this paper we propose a mixed-effects least squares support vector regression (LS-SVR) for longitudinal data. We add a random-effect term in the optimization function of LS-SVR to take random effects into LS-SVR for analyzing longitudinal data. We also present the model selection method that employs generalized cross validation function for choosing the hyper-parameters which affect the performance of the mixed-effects LS-SVR. A simulated example is provided to indicate the usefulness of mixed-effect method for analyzing longitudinal data.
Cho, Dae-Hyeon The Korean Statistical Society 1996 Journal of the Korean Statistical Society Vol.25 No.2
In this paper we consider the gambler's ruin problem with N players and derive the formula for computing the expected ruin time when the initial fortunes of all N players are the same. And we present an example for the case of N = 5.
Moments and Product moments of Order Statistics in Uniform Distributions
Cho,Dae-Hyeon 인제대학교기초과학연구소 1998 자연과학 Vol.2 No.-
구간 (0, 1)에서 균일하게 분포되어 있는 U(0, 1)을 따르는 모집단에서 뽑힌 n개의 확률표본 Χ₁, Χ₂,...., Χn의 순서 통계량을 Y₁, Y₂,...., Yn 이라 할 때 Yi의 m차 적률 E(Ymi)과 곱적률 E(Yui Yvj)값을 구하는 공식을 유도하였다. 이를 이용하여 Yi의 평균과 분산을 구해 보았으며, Yi 와 Yj의 상관계수 Corr (Yi, Yj)의 갑을 유도해 내었다. In this paper, we study the moments and product moments in Uniform distributions. i.e., Let Χ₁, Χ₂,...., Χn be a random sample from a distribution that has uniform distribution over (0, 1). And Y₁, Y₂,...., Yn. We will find the moments of Yi and the product moments of Yi and Yj.
A Strong large deviations theorem for the ratio of the independent random variables
Cho, Dae Hyeon 인제대학교 1993 仁濟論叢 Vol.9 No.2
본 연구에서는 서로 독립인 확률변수들의 비에 대한 꼬리확률의 대편차 확률에 관한 정리를 Chaganty-Sethuraman(1985)의 국소극한정리에서 사용된 방법을 이용하여 증명하였다. In this paper, we prove a strong large deviations theorem for the ratio of independent random variables with error rate of O(n-1). To obtain our results we use the inversion formula for the tail probability and apply the Chaganty and Sethuraman's(1985) approach. KEYWORDS: Large deviations, tail probability, inversion formula, ratio of random variables.