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All Journal Epsilon: Jurnal Matematika Murni dan Terapan SEMIRATA 2015 Jurnal Abdidas Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Buguh: Jurnal Pengabdian Kepada Masyarakat Journal of Mathematics: Theory and Applications Jurnal Siger Matematika Journal of Innovation Research and Knowledge
Dorrah Azis
Jurusan Matematika FMIPA Universitas Lampung
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Public Health Social Sciences Transportation Other

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PEMODELAN MATEMATIKA LAJU ALIRAN PANAS PADA WAJAN PEMBUATAN ARANG AKTIF-13 DENGAN MENGGUNAKAN METODE BEDA HINGGA (FINITE DIFFERENCE METHOD) Tiryono R; Nurhayati Nurhayati; Dorrah A; Aang N
Journal of Innovation Research and Knowledge Vol. 3 No. 1: Juni 2023
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53625/jirk.v3i1.5808

Abstract

In this paper we propose the theory of finite difference methode for calculating heat transfer on rectangular tin pan alloy which the center temperature is 7000c and the ambien temperature is 300 c. The aim in this paper we used this method for calculating of heat transfer on the pan in order to process of making activated charcoal especially called “arang aktif-13”. We design a furnace which is the heat resources in the center only then choosing 9 points rectangularly on the plate pan that it will be calculated the value of temperature and the velocity of temperature on these points. By assumption the temperature at the center of the pan on the furnice is consistence or stable, then we do the process of defried of row material coconut shell until cooked as activated charcoal. We consider choosing 9 points in order tobe caculated as manually easiely and therefore can be comparing with using software lindo, and also for more points grather than 9 we suggested using masine more efficient. The spreading of the heat on the plate pan when the moment achieve the condition of the temperature araund the pan stable, then it can be animated by using software matlab. By doing depried of row material, that process will need 13 minutes to become activated charcoal.
Penyelesaian Sistem Persamaan Fully Fuzzy Non Linear Menggunakan Metode Newton Raphson Ganda Zakaria La; Annisa Eka; Dorrah Aziz
Journal of Mathematics: Theory and Applications Vol 5 No 2 (2023): Volume 5, Nomor 2, 2023
Publisher : Program Studi Matematika Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/jomta.v5i2.2876

Abstract

Terdapat banyak permasalahan dunia nyata yang diupayakan penyelesaiannya menggunakan sistem persamaan yang melibatkan himpunan bilangan fuzzy. Sistem persamaan fuzzy non linear dikembangkan menjadi sistem persamaan fully fuzzy nonlinear dengan mengimplementasikan operasi aritmatika bilangan fuzzy. Artikel ini bertujuan mendeskripsikan penyelesaian sistem persamaan fully fuzzy non linear yang melibatkan bilangan segitiga fuzzy dengan menggunakan alat bantu komputasi (algoritma dan pemrograman) dengan melibatkan metode Newton Raphson Ganda. Teknis mendapatkan solusi menggunakan metode ini dapat dicapai dengan terlebih dahulu melakukan transformasi sistem persamaan fuzzy ke dalam sistem persamaan nonlinear dengan bilangan tegas menggunakan operasi aritmatika bilangan fuzzy segitiga. Komputasi penentuan solusi didasari pada sebuah algoritma yang implementasinya ke dalam program Matlab. Algoritma dan program Matlab yang dibuat memperlihatkan bahwa Newton Raphson Ganda dapat menyelesaikan sistem persamaan fully fuzzy non linear dengan efesien dalam waktu dan akurat dalam nilai hampiran solusi.
Co-Authors Aang N Agus Sutrisno Agus Sutrisno Agus Sutrisno Amanto Amanto Amanto Amanto Annisa Eka Effendi Effendi Eri Setiawan Fitriani Khoirin Nisa La Zakaria Mapful Mapful Maria Maria Marsela Nuvela Syanur Muslim Ansori Mustofa Usman Naflah Faulina Netti Herawati Netti Herawati Notiragayu Notiragayu Notiragayu Notiragayu Nurhayati Nurhayati Nusyirwan Nusyirwan Nusyirwan Nusyirwan Pandri Ferdias Regita Elza Fitri Saidi, Subian Santi Deviana Tiryono R Tiryono Ruby Tresya Carmela Purba Wahyu Megarani