Matematika Pure Mathematics Computing Continuous stirred tank reactor Demam Berdarah Demam berdarah ETD Ensemble Kalman Filter Estimation Extended Kalman Filter Fractional Order PID Controller Fuzzy Logic Controller Influenza Virus Karbon Monoksida (CO) Kendali Optimal Kontrol Optimal Mathematics Metode Pemotongan Setimbang Model Matematika Nitrogen Dioksida (NO2) Nonlinear Optimal Control Pencemaran Udara Pontryagin Minimum Principle Prinsip Minimum Pontryagin Reduksi Model Runge Kutta Runge-Kutta Method SIRS Singular Hankel Sistem Linier Waktu Diskrit Steam drum boiler estimation fuzzy Kalman filter steam temperature water level