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All Journal Jurnal Pengabdian kepada Masyarakat Limits: Journal of Mathematics and Its Applications
Henny Purwaningsih
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Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Economics, Econometrics & Finance Environmental Science Languange, Linguistic, Communication & Media Mathematics Public Health Social Sciences Other

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Kendali Optimal Model Pertumbuhan Mikroalga dalam Chemostat Wahyuni Ningsih; Henny Purwaningsih; Rofilah El Maghfiro
Limits: Journal of Mathematics and Its Applications Vol. 19 No. 2 (2022): Limits: Journal of Mathematics and Its Applications Volume 19 Nomor 2 Edisi No
Publisher : Pusat Publikasi Ilmiah LPPM Institut Teknologi Sepuluh Nopember

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Abstract

Microalgae is one of Indonesia's natural potentials that can be utilized in various needs such as producing energy products (bioethanol, biodiesel), biopolymer producing plastic and as a soil mixture for construction engineering, even as waste treatment by absorbing the remaining organic compounds and nutrients or absorb some of the hazardous compounds contained in the waste. One of the microalgae culture media is chemostat. Chemostat is a type of continuous bioreactor that functions for the cultivation of microalgae and other microorganisms that are usually used in laboratory and industrial scales. In this study, control efforts on the microalgae growth model in the chemostat were carried out. This is so that the growth of microalgae reaches the equilibrium value in the minimum possible time. By applying Pontryagin's Minimum Principle and dilution parameters as control variables, it is obtained that the type of control carried out is bang-bang control. Then the control problem is solved numerically using the ICLOCS2 toolbox. The simulation results showed that microalgae were able to reach equilibrium conditions faster by 40.9% under the control. So, it can be said that the system can be controlled optimally.
PELATIHAN PENYUSUNAN RPP BAHASA INGGRIS DENGAN METODE MONTESSORI BAGI PENGAJAR KB/TK BAITUL MAKMUR Ahimsa Padmanaba Murfi; Zulmy Faqihuddin Putera; Tutuk Widowati; Umi Anis Ro’isatin; Henny Purwaningsih
J-ABDI: Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 4: September 2024
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53625/jabdi.v4i4.8477

Abstract

Language development is an important aspect of early childhood development. This is one of the considerations for many early childhood education institutions, including KB/TK Baitul Makmur, Malang, to teach English to their students. However, the method used has yet to be tested according to the children's natural phase in learning language. This is important to minimize children's difficulties or stress in learning a foreign language. These goals can be achieved by applying the proven Montessori method, and according to the child's cognitive abilities. This workshop aims to enable education practitioners in the kindergarten to develop English learning plans using the Montessori method, especially for children aged 3-6 years
Co-Authors Ahimsa Padmanaba Murfi Rofilah El Maghfiro Umi Anis Ro’isatin Wahyuni Ningsih Widowati, Tutuk Zulmy Faqihuddin Putera