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All Journal JIPM (Jurnal Ilmiah Pendidikan Matematika) Unisda Journal of Mathematics and Computer Science (UJMC) International Journal of Insights for Mathematics Teaching (IJOIMT) Journal of Science Nusantara Jurnal Pembelajaran dan Ilmu Pendidikan
Swastika, Galuh Tyasing
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Social Sciences Other

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Journal : Unisda Journal of Mathematics and Computer Science (UJMC)

 1 
Peramalan Harga Minyak Goreng Pada Masa Pemulihan Pandemi Covid-19 Di Pasar Kabupaten Blitar Swastika, Galuh Tyasing; Nada, Luthfi Qathrun; Sanwidi, Ardhi
UJMC (Unisda Journal of Mathematics and Computer Science) Vol 10 No 1 (2024): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department, Faculty of Mathematics and Sciences Unisda Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52166/ujmc.v10i1.4121

Abstract

The impact of Covid-19 is still felt on the unstable economic sector in Indonesia, one of which is cooking oil where the price has soared. DISPERINDAG as a service that has duties, one of which is in monitoring and supervising the price of basic necessities, so knowing the prediction of the price of goods can make it easier for DISPERINDAG to carry out its duties in maintaining the stability of the price of basic necessities, especially those in the market. So the author is interested in researching the forecasting of cooking oil prices during this transition period with the single exponential smoothing method. The data used for the study is daily data on the price of cooking oil without brand in the Blitar Regency market for 426 days from August 1, 2021 - September 30, 2022 then the data can to predict the price of cooking oil in October 2022. The results of the study obtained an alpha value of 0.9 to be the smallest error value with an average MAPE of 7.41% and the predicted results of bulk cooking oil prices in the Blitar Regency market in October 2022 of Rp 12929.97/liter.
Aplikasi Program Linier Menggunakan Lindo Dalam Optimasi Keuntungan Pada Omah Jenang di Kabupaten Blitar Swastika, Galuh Tyasing; Mufliha, Elok Zinatul
UJMC (Unisda Journal of Mathematics and Computer Science) Vol 10 No 2 (2024): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department, Faculty of Mathematics and Sciences Unisda Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52166/ujmc.v10i2.7810

Abstract

Omah Jenang is one of the industries engaged in the production of traditional snacks. Currently Omah Jenang does not yet have guidelines for realizing the formation of the composition of production quantities correctly based on calculations that still use forecasting methods. Therefore Omah Jenang often experiences difficulties in providing raw materials and determining maximum profits. The purpose of this study was to de-termine the optimum yield of profits at Omah Jenang by using the simplex method linear program with the help of Lindo Software. The data used is food production data at the Omah Jenang Home Industry in 2022. The method used in this study is the Linear Pro-gramming simplex method and the Lindo Software application. The results of optimization calculations using the linear programming method and the help of Lindo Software are that the maximum profit in a month is IDR 20,000,000 in producing 800 packages of madumongso. Based on the calculation results it can be concluded that the benefits obtained by using the simplex method with the help of Lindo Software can be obtained maximum results.
Co-Authors Abdur Rahman As’ari Aulya, Sona Lutfiatul Edy Bambang Irawan Mufliha, Elok Zinatul Nada, Luthfi Qathrun Narendra, Risang Sanwidi, Ardhi Subanji Subanji Toto Nusantara