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All Journal Jurnal Ilmiah Agroust JRIIN :Jurnal Riset Informatika dan Inovasi Journal of Green Science and Technology
Aji, Restu
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Transportation

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Pengembangan Sistem Rekomendasi Buku Menggunakan Algoritma Machine Learning Berbasis Klasifikasi Aji, Restu; Syaifunnuha, Saddam; Hidayat, Fikri; Alkhodri; Malik Antapraja, Kamaludin
Jurnal Riset Informatika dan Inovasi Vol 2 No 11 (2025): JRIIN: Jurnal Riset Informatika dan Inovasi
Publisher : shofanah Media Berkah

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Abstract

Pengguna di era digital seringkali kesulitan memilih buku yang sesuai dengan kebutuhan dan minat mereka di antara banyaknya pilihan yang tersedia. Masalah ini dapat menyebabkan kebingungan dan ketidakefektifan dalam proses pemilihan buku, terutama bagi pembaca yang mencari referensi berkualitas dalam waktu singkat. Oleh karena itu, sistem rekomendasi buku yang akurat dan dapat diandalkan sangat penting untuk membantu pembaca menemukan buku yang sesuai dengan preferensi mereka. Tujuan penelitian ini adalah untuk mengembangkan sistem rekomendasi buku yang dapat memberikan hasil yang lebih tepat berdasarkan analisis data pengguna dan metadata buku. Pemrosesan data dilakukan dengan algoritma klasifikasi seperti Decision Tree dan Random Forest.
Pengaruh Macam dan Dosis Pupuk Organik terhadap Sifat Agronomi Tanaman Bawang Merah Varietas Bima (Allium ascalonicum L.) Aji, Restu; Maryani, Yekti; Zamroni
JURNAL ILMIAH AGROUST Vol 6 No 2 (2022): October
Publisher : Universitas Sarjanawiyata Tamansiswa

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The purpose of this study was to determine the effect of the type and dose of organic fertilizers, namely cattle pens, goat pens, chicken coops and compost on the yield of the Bima variety of shallots. The research was conducted from January to March 2022 in Bunder Village, Patuk District, Gunung Kidul Regency, D. I. Yogyakarta, with an altitude of 500 meters above sea level, a minimum temperature of 20ºC and a maximum temperature of 33ºC. Rainfall 312.00 mm/year. The experiment in this study consisted of 2 factors, namely the type of organic fertilizer and the dose of organic fertilizer. This study was conducted with 3 repetitions of each factor and arranged in a randomized block design (RBD) so that there were 9 treatment combinations: M1D1, M1D2, M2D1, M2D2, M3D1, M3D2, M4D1, M4D2 and added with 1 control without fertilizer (4x2 ) + 1 = 9. Each experimental unit used 3 sample plants, so that there were 81 sample plants and the total number of plants was 162 plants. The observed variables included plant height, number of leaves per hill, number of plants per hill, plant fresh weight per hill, plant dry weight per hill, tuber diameter, tuber fresh weight per hill, tuber dry weight per hill. Analysis of the results was carried out on the results of observations using variance at the 5% level if there were differences between the treatments tested with the DMRT (Duncan's Multiple Range Test) at the 5% level. There was no interaction between the type and dose of organic fertilizer on the agronomic properties of the shallot variety Bima. The various treatments of organic fertilizers showed no significant difference in the yield of the Bima variety of shallots. The organic fertilizer dose treatment showed that there was a significant difference in the yield of the Bima variety of shallots. Treatment types and doses of organic fertilizers showed no significant differences in control and yield.
The Effect of Variations in Sulfuric Acid - Oxalic Acid Electrolyte Concentration and Additional Aeration on 1100 Series Aluminum Anodization Results Leoanggraini, Unung; Irianto, Indra; Aji, Restu; Paramitha, Tifa; Sihombing, Rony
Journal of Green Science and Technology Vol 8 No 2 (2024): Journal of Green Science and Technology Vol.8 No.2 September 2024
Publisher : Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v8i2.9425

Abstract

Aluminum is one of the materials used in making various types of goods because it has good properties such as being light, ductile and has good corrosion resistance. One of the disadvantages of aluminum is its low level of hardness. This can be overcome by treating aluminum, one of which is the anodization process. In this research, variations in the type of electrolyte used were sulfuric acid-oxalic acid, the electrolyte concentration was 16% with an interval of 0.5, the temperature used was room temperature with a current density of 3/dm2 and a coating time of 30 minutes. The aim of this research is to determine the acid concentration and the effect of the aeration system on mechanical properties. From the data obtained, it was found that the difference in weight of the best metal with the addition of aeration at a concentration of 13.5+2.5 was 0.0411 gr. This shows that as the concentration of oxalic acid increases it can accelerate the process of aluminum oxide formation, then for electrolyte concentrations of 16+0, 15.5+0.5, 15+1, 14.5+1.5 and 14+2 the difference in mass weight metals increased respectively by 0.0337 gr, 0.0335 gr, 0.0366 gr, 0.0390 and 0.0411 gr. In the anodization process without   additional aeration, the best metal weight difference is found at an electrolyte concentration of 13.5+2.5 of 0.0401 gr. This shows that increasing the concentration of oxalic acid can accelerate the process of aluminum oxide formation. Then at electrolyte concentrations of 16+0, 15.5+0.5, 15+1, 14.5+1.5 and 14+2 the difference in metal mass weight gradually increases by 0.0182 gr, 0.0293 gr, 0.0318 gr, 0.0322 and 0.0362 gr. Keywords: Aluminum, Anodization, Oxide Coating, Electrolyte Solution, Sulfuric Acid, Oxalic acid
Co-Authors Alkhodri Hidayat, Fikri Irianto, Indra Malik Antapraja, Kamaludin Paramitha, Tifa Sihombing, Rony Syaifunnuha, Saddam Unung Leoanggraini Yekti Maryani Zamroni