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TIME EVOLUTIONS OF THE STATIONARY SOLUTIONS OF KORTEWEG-DE VRIES EQUATION WITH A POSITIVE FORCING
Sungim Whang,Jeongwhan Choi 한국산업응용수학회 2007 한국산업응용수학회 학술대회 논문집 Vol.2 No.1
We study the Korteweg-de Vries (KdV) equation with a positive forcing for a flow of an inviscid and incompressible fluid. The fluid is of a constant density. Steady solutions of FKDV equation are found and numerical stabilities are studied. Moreover, we present the traveling wave solutions and time evolutions of these.
Optimal treatment strategies of Tuberculosis in South Korea
Eunok Jung,Sungim Whang,Sunwha Choi 한국산업응용수학회 2010 한국산업응용수학회 학술대회 논문집 Vol.5 No.1
We have developed a tuberculosis (TB) model in South Korea using the SEIR model with the time-dependent parameters. South Korea ranked the highest TB incidence among members of the Organization for Economic Cooperation and Development (OECD) in 2004. The observed data from the Korea Center for Disease Control and Prevention (KCDC) shows a certain rise of the incidence people after 2001 yr because of increasing foreign workers with active-TB and starting the operation of the Korean Tuberculosis Surveillance System. The least-square curve fitting has been used for fitting the parameters in our model to the observed data. In this work, we also propose the optimal treatment strategies of TB model in South Korea using optimal control theory based on our TB model from 2001 yr to 2008 yr.