Dwi Ertiningsih

• Doctor of Philosophy
• Lecturer at Universitas Gadjah Mada

This study presents a mathematical model of glioma growth dynamics with drug resistance, capturing interactions among five cell populations – glial cells, sensitive and resistant glioma cells, endothelial cells, and neurons – alongside chemotherapy and antiangiogenic therapy. Glioma, a malignant tumor originating in glial cells, undergoes chemother...

Indonesia’s vulnerability to seismic activity, stemming from its location at the convergence of four tectonic plates, highlights the critical need for accurate assessment of seismic losses. The seismic event of May27, 2006, whichled to substantial economic losses, underscores the importance of developing robust risk management strategies. A compreh...

This research presents a mathematical model of glioma growth dynamics with drug resistance, capturing interactions among five cell populations: glial cells, sensitive glioma cells, resistant glioma cells, endothelial cells, and neuron cells, along with two therapy agent populations: chemotherapy and anti-angiogenic therapy. Glioma is a malignant tu...

In this paper is considered a microalgae growth model under the influence of sunlight. The model is a two-dimensional system of the first order Ordinary Differential Equations (ODE) with a ten-dimensional parameter space. For this model, we study the existence of equilibrium points and their stability, and determine a bifurcation of the system when...

This study presented a glioma growth model that accounts for drug-sensitive and drug-resistant cells in response to chemotherapy and anti-angiogenic therapy. Chemotherapy induces mutations in drug-sensitive cells, leading to the emergence of drug-resistant cells and highlighting the benefits of combined therapy. Anti-angiogenic therapy can mitigate...

In industrial production management, production scheduling planning is a very important thing that aims to optimize production time and costs to meet consumer needs and gain the maximum profit. During the production process, other things also need to be considered, for instance, machine reliability. In addition, we assume that the production system...

COVID-19 or Coronavirus Disease-19 which first appeared in December 2019 has spread around the world, one of which is Indonesia. The spread of the COVID-19 has affected all areas of human life and the most affected area is health. It can be known from the number of COVID-19 patients in numerous national referral hospitals, one of which is RSUP Dr....

Penelitian ini bertujuan untuk menentukan sistem antrean yang efektif dengan mempertimbangkan biaya dan kontrol kedatangan pasien pada fasilitas kesehatan: Puskesmas Ungaran, Semarang. Penelitian ini menggunakan data kuantitatif berupa waktu kedatangan pasien, waktu pelayanan pasien, jumlah pasien, dan jumlah pelayan. Tahapan-tahapan yang dilakukan...

In this paper, we develop a novel role for the initial function $v_0$ in the Value Iteration algorithm. In case the optimal policy of a countable state Markovian queueing control problem has a threshold or switching curve structure, we conjecture, that one can tune the choice of $v_0$ to generate monotonic sequences of $n$-stage threshold or switch...

In this paper we study a class of Quasi-Skipfree (QSF) processes where the transition rate submatrices in the skipfree direction have a column times row structure. Under homogeneity and irreducibility assumptions we show that the stationary distributions of these processes have a product form as a function of the level. For an application, we will...