https://journals.itb.ac.id/index.php/cbms/issue/feed Communication in Biomathematical Sciences 2021-05-07T09:46:54+07:00 Prof.Dr. Edy Soewono esoewono@math.itb.ac.id Open Journal Systems <p><em><a href="http://journals.itb.ac.id/index.php/cbms"><img class="imgdesc" src="http://journals.itb.ac.id/public/site/images/budini/cbms.png" alt="" width="146" height="200" /></a></em></p> <p><strong>Communication in Biomathematical Sciences</strong> welcomes full research articles in the area of <em>Applications of Mathematics in biological processes and phenomena</em>. Review papers with insightful, integrative and up-to-date progress of major topics are also welcome. Authors are invited to submit articles that have not been published previously and are not under consideration elsewhere.<br /><br />The editorial board of CBMS is strongly committed to promoting recent progress and interdisciplinary research in Biomatematical Sciences.</p> <p>e-ISSN: <a title="ISSN PDII LIPI" href="http://u.lipi.go.id/1486034764" target="_blank" rel="noopener">2549-2896</a></p> <p>Accreditation <a href="http://arjuna.ristekbrin.go.id/files/info/Hasil_Akreditasi_Jurnal_Nasional_Periode_1_Tahun_2020.pdf">No. 85/M/KPT/2020</a></p> <p><a href="https://statcounter.com/p12002390/?guest=1">View My Stats</a></p> https://journals.itb.ac.id/index.php/cbms/article/view/14822 The Effects of Fogging and Mosquito Repellent on the Probability of Disease Extinction for Dengue Fever 2020-12-24T01:57:25+07:00 Glenn Lahodny Jr. glenn.lahodny@usta.edu Mona Zevika monzevik@s.itb.ac.id <p>A Continuous-Time Markov Chain model is constructed based on the a deterministic model of dengue fever transmission including mosquito fogging and the use of repellent. The basic reproduction number (R0) for the corresponding deterministic model is obtained. This number indicates the possible occurrence of an endemic at the early stages of the infection period. A multitype branching process is used to approximate the Markov chain. The construction of offspring probability generating functions related to the infected states is used to calculate the probability of disease extinction and the probability of an outbreak (P0). Sensitivity analysis is shown for variation of control parameters and for indices of the basic reproduction number. These results allow for a better understanding of the relation of the basic reproduction number with other indicators of disease transmission.</p> 2021-05-07T00:00:00+07:00 Copyright (c) 2021 Communication in Biomathematical Sciences https://journals.itb.ac.id/index.php/cbms/article/view/15437 Quantitative Measure to Differentiate Wicket Spike from Interictal Epileptiform Discharges 2021-01-03T01:16:26+07:00 Suryani Gunadharma suryanig@yahoo.com Ahmad Rizal rizalbdg@gmail.com Rovina Ruslami n.ruslami@gmail.com Tri Hanggono Achmad tachmad@fk.unpad.ac.id See Siew Ju gnrssj@sgh.gov.sg Juni Wijayanti Puspita juni.wpuspita@yahoo.com Sapto Wahyu Indratno sapto@math.itb.ac.id Edy Soewono esoewono@math.itb.ac.id <p>A number of benign EEG patterns are often misinterpreted as interictal epileptiform discharges (IEDs) because of their epileptiform appearances, one of them is wicket spike. Differentiating wicket spike from IEDs may help in preventing epilepsy misdiagnosis. The temporal location of IEDs and wicket spike were chosen from 143 EEG recordings. Amplitude, duration and angles were measured from the wave triangles and were used as the variables. In this study, linear discriminant analysis is used to create the formula to differentiate wicket spike from IEDs consisting spike and sharp waves. We obtained a formula with excellent accuracy. This study emphasizes the need for objective criteria to distinguish wicket spike from IEDs to avoid misreading of the EEG and misdiagnosis of epilepsy.</p> 2021-05-07T00:00:00+07:00 Copyright (c) 2021 Communication in Biomathematical Sciences https://journals.itb.ac.id/index.php/cbms/article/view/15487 Peristaltic-Ciliary Flow of A Casson Fluid through An Inclined Tube 2021-01-05T02:41:23+07:00 Saravana Ramachandran Kuppalapalle.Vajravelu@ucf.edu Kuppalapalle Vajravelu Kuppalapalle.Vajravelu@ucf.edu K.V. Prasad Kuppalapalle.Vajravelu@ucf.edu S. Sreenadh Kuppalapalle.Vajravelu@ucf.edu <p>The paper is concerned with the peristaltic-ciliary transport of a viscoplastic fluid (Casson fluid) through an inclined cylindrical tube. The peristalsis-cilia induced motion is analysed in the moving frame of reference under the lubrication approximations. Solutions to the flow characteristics petering to yielded and unyielded regions are obtained. The effects of various physical parameters on the axial velocity, the pumping characteristics, the pressure rise, and the frictional force over one wavelength, along with the trapping phenomenon are presented through graphs. Further, the peristaltic flow and peristaltic-ciliary flow results are compared. It is noticed that the axial velocity and the size of trapping bolus in the unplug flow region decrease with an increase in the yield stress. In addition, the axial velocity and the axial pressure gradient in the peristaltic-ciliary pumping are higher than those in the peristaltic pumping.</p> 2021-05-07T00:00:00+07:00 Copyright (c) 2021 Communication in Biomathematical Sciences https://journals.itb.ac.id/index.php/cbms/article/view/15798 A Nonlinear Observer to Estimate the Effective Reproduction Number of Infectious Diseases 2021-03-02T22:44:12+07:00 Agus Hasan agus.hasan@ntnu.no <p>In this paper, we design a Nonlinear Observer (NLO) to estimate the effective reproduction number (Rt) of infectious diseases. The NLO is designed from a discrete-time augmented Susceptible-Infectious-Removed (SIR) model. The observer gain is obtained by solving a Linear Matrix Inequality (LMI). The method is used to estimate Rt in Jakarta using epidemiological data during COVID-19 pandemic. If the observer gain is tuned properly, this approach produces similar result compared to existing approach such as Extended Kalman filter (EKF).</p> 2021-05-07T00:00:00+07:00 Copyright (c) 2021 Communication in Biomathematical Sciences