• Journal of applied mathematics & informatics
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• v.22 no.1_2
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• pp.149-158
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• 2006

In this paper, we consider the Lotka- Volterra predator-prey system, in which constant quantity of the prey is harvested in regular pulses. The ultimate behavior of the solutions starting from different regions is mainly studied. Further, some examples are given to illustrate our results.

• Journal of applied mathematics & informatics
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• v.24 no.1_2
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• pp.377-385
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• 2007

In this paper, by the equations of Mao [9] and Peng [5], we use the martingale method to establish the comparison theorems of backward stochastic differential equations (BSDEs). We generalize the results of Cao-Yan [1].

• Journal of Communications and Networks
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• v.6 no.3
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• pp.209-215
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• 2004

In this paper, a butterfly Log-MAP decoding algorithm for turbo code is proposed. Different from the conventional turbo decoder, we derived a generalized formula to calculate the log-likelihood ratio (LLR) and drew a modified butterfly states diagram in 8-states systematic turbo coded system. By comparing the complexity of conventional implementations, the proposed algorithm can efficiently reduce both the computations and work units without bit error ratio (BER) performance degradation.

• Proceedings of the Korea Contents Association Conference
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• 2017.05a
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• pp.401-402
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• 2017

Advances in the Internet and network technology and the rapidly growing number of personal devices result in the fast growth of E-Commerce, M-Commerce. Nowadays, location-based services are widely used in E-commerce. A location-based service (LBS) is a service based on the geographical positions of mobile handheld devices such as smart phones or tablet computers. In this paper I will view the combination of the E-commerce and LBS.

• Proceedings of the Korea Contents Association Conference
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• 2013.05a
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• pp.145-146
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• 2013

현대 디자이너는 사회로부터 다양화와 현대화에 대한 지속적인 요구를 받고 있으며, 한편으로는 자원의 유한성이라는 제한으로 인해 다양화와 현대화와의 모순이라는 현실에 직면하고 있다. 이러한 배경들로 말미암아 재활용품 개발은 현대 디자인에서 중요한 분야로 자리 잡고 있다. 본 연구는 폐기물 재활용품의 모듈형식 디자인에 관한 분석을 통하여 지속 가능한 각도에서의 모듈형식 디자인의 역할과 그 중요성의 의미를 인정하고 모듈형식의 생활용품 디자인에서 나타난 정보를 통하여 재활용품 디자인의 개발방향을 제시하였다.

• Proceedings of the Korean Society of Embryo Transfer Conference
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• 2004.10a
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• pp.41-41
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• 2004

• International Journal of Reliability and Applications
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• v.9 no.1
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• pp.1-5
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• 2008

A heuristic algorithm for reliability optimization of a distributed network system is developed so that the reliability of a large system can be determined efficiently. This heuristic bases on the determination of maximal reliability set of maximum node capacity, maximal link reliability and maximal node degree.

• Bulletin of the Korean Chemical Society
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• v.35 no.10
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• pp.3092-3094
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• 2014

• Bulletin of the Korean Chemical Society
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• v.29 no.11
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• pp.2195-2201
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• 2008

• Bulletin of the Korean Chemical Society
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• v.34 no.11
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• pp.3425-3428
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• 2013

We solve the Klein-Gordon equation with the Morse empirical potential energy model. The bound state energy equation has been obtained in terms of the supersymmetric shape invariance approach. The relativistic vibrational transition frequencies for the $X^1{\sum}^+$ state of ScI molecule have been computed by using the Morse potential model. The calculated relativistic vibrational transition frequencies are in good agreement with the experimental RKR values.