Judul: Analysis of Electrical Energy Consumption and Plant  Performance in Shallot TSS Seeding with Mini Plant Factory
Abstrak: The mini plant factory can provide the essentials environment for the growth of TSS (True Shallot Seed) seedlings. However, energy consumption takes an integral part of plant performance in a mini plant factory, because all of the plant’s growth factors are supported by electronic components. This research aims to analyze the actual energy consumption and plant performance of TSS seedling production in a mini plant factory. The research consists of several stages, including the seeding stage, mini plant factory preparation stage, maintenance stage, and energy consumption analysis stage. The mini plant factory consists of a cultivation and nutrition room that is equipped with electronic components such as air conditioners, LED growth lights, atomizers and pumps. The analysis of energy consumption shows that the electricity usage for one TSS seedling production period is up to 496.05 kWh and the required specific energy for one TSS seedlings up to 107.37 Wh/seedlings. The cost of electricity consumption for producing TSS seedlings in a mini plant factory is higher than the production cost of TSS seedlings in open fields, but it can produce seedlings with faster growth. TSS performance achieved an average plant height of 33.61 ± 5.56 cm, 5 ± 0.46 leaves, a base diameter of 0.59 ± 0.16 cm, and a weight of 1.93 ± 0.76 grams., Mini plant factory mampu menyediakan kondisi lingkungan yang dibutuhkan untuk pertumbuhan bibit TSS (True Shallot Seed). Namun penggunaan energi sangat berpengaruh terhadap keragaan tanaman dalam mini plant factory, karena semua faktor pertumbuhan tanaman ditunjang oleh komponen elektronik. Penelitian ini bertujuan melakukan analisis konsumsi energi listrik aktual dan melakukan analisis keragaan tanaman pada pembibitan TSS di mini plant factory. Penelitian ini terdiri dari beberapa tahapan, yaitu tahap penyemaian, tahap persiapan mini plant factory, tahap pemeliharaan, dan tahap analisis konsumsi energi listrik. Mini plant factory yang digunakan terdiri dari ruang budidaya dan ruang nutrisi yang dilengkapi komponen elektronik seperti air conditioner, lampu growth LED, atomizer, dan pompa. Hasil analisis konsumsi energi listrik menunjukkan bahwa penggunaan listrik yang dibutuhkan untuk satu periode pembibitan TSS mencapai 496,05 kWh dan energi spesifik yang dibutuhkan untuk satu bibit TSS mencapai 107,37 Wh/bibit. Biaya konsumsi listrik untuk memproduksi bibit TSS dengan menggunakan mini plant factory lebih mahal dibandingkan dengan biaya produksi bibit TSS pada lahan terbuka, namun pertumbuhan yang dihasilkan lebih cepat. Bibit TSS yang dihasilkan memiliki keragaan rata-rata tinggi tanaman sebesar 33,61 ± 5,56 cm, jumlah daun sebanyak 5 ± 0,46 helai, diameter pangkal sebesar 0,59 ± 0,16 cm, dan bobot sebesar 1,93 ± 0,76 gram.
Keyword: true shallot seed, mini plant factory, plant performance, seedling production, electrical energy consumption

Judul: Technoeconomy Analysis of Shallot Seedling Production from TSS (True Shallot Seed) with LCAC (Low Cost Aeroponic Chamber) Technology
Abstrak: Budidaya bawang merah umumnya menggunakan umbi bawang merah dibandingkan dengan benih bawang merah. Padahal penggunaan benih bawang merah sebagai bibit tanaman bawang merah memiliki kelebihan lebih dari umbi. Namun kelemahan True Shallot Seed (TSS) adalah penambahan waktu budidaya yaitu 40 hari untuk proses semai. Tujuan dari penelitian ini adalah untuk menganalisis kelayakan usaha pembenihan TSS dan keunggulan TSS dibandingkan dengan umbi bawang merah. Penelitian ini menggunakan rancangan skenario skala produksi 200, 500, 1000 baki, dan 1 juta benih dengan jadwal produksi 3 siklus per tahun dan 6 siklus per tahun. Analisis kelayakan menunjukkan bahwa investasi pembenihan bawang merah dengan TSS layak dilakukan. Perhitungan analisis finansial pada setiap skala dan jadwal produksi menghasilkan NPV (Net Present Value) berkisar Rp4.750.650 sampai Rp822.448.953, IRR (Internal Rate Return) 9,87% sampai 65,4% di atas tingkat diskonto yang digunakan sebesar 6%, Net B/C (Benefit per Cost) Ratio 1,12 sampai 2,24 dan investasi awal akan kembali kepada investor dalam kisaran 1,28 sampai 5,23 tahun setelah produksi dimulai., Shallot cultivation generally uses shallot bulbs compared to shallot seeds. The use of shallot seeds as shallot plant seeds has more advantages than bulbs. Whereas the weakness of TSS (True Shallot Seed) is the addition of cultivation time, which is 40 days for the seedling process. The purpose of this study was to analyze the feasibility of TSS seedling and the advantages of TSS compared to shallot bulbs. This study used scenario design of production scales of 200, 500, 1000 trays, and 1 million seeds with production schedules of 3 cycles per year and 6 cycles per year. The feasibility analysis showed that the investment in shallot seedling with TSS was feasible. Financial analysis calculations at each scale and production schedule resulted NPV (Net Present Value) ranging from 4.750.650 IDR to 822.448.953 IDR rupiah, IRR (Internal Rate Return) 9,87% to 65,4% above the discount rate used of 6%, the Net B/C (Benefit per Cost) Ratio was 1,12 to 2,24 and the initial investment will return to investors in the range of 1,28 to 5,23 years after production begins.
Keyword: bawang merah, low cost aeroponic chamber, teknoekonomi, true shallot seed, shallot, technoeconomy

Judul: Grup dan Homomorfisma Grup pada Rubik Revenge
Abstrak: Rubik cube is a kind of puzzle game. A player must arrange rubik sides, which have been disordered, back to the position where every side has the same colour. This paper does not focus on the settlement solution, but instead on proving the existence of a group homomorphism between rubik movement group and S96 symmetric permutation group in rubik revenge. Firstly, it has been proved that rubik movement set is a group. Then, it also has been proved that the M set, which contains numeric labels of 1 until 96 in cubinos sides, is S96 symmetric permutation group.
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