Judul: Pengaruh relabeling rak penyimpanan terhadap waktu pencarian produk olahan hasil ternak
Abstrak: Retail saat ini menjadi salah satu penyumbang perputaran ekonomi di Indonesia. Permintaan pelanggan terkait barang dalam jumlah tertentu berkesinambungan dengan waktu pencarian barang di backroom. Hal ini menimbulkan permasalahan krusial jika penempatan barang dagang yang disimpan di backroom masih belum teratur sehingga menyebabkan ketidakefisienan kerja. Penyusunan ulang barang dagang di backroom menjadi per kategori dan per brand bertujuan untuk mempermudah penempatan dan pengambilan barang dagang sehingga mengurangi waktu pencarian barang. Hasil penelitian menunjukan adanya pengaruh signifikan terhadap penyusunan ulang barang dagang di backroom dengan relabeling rak penyimpanan. Terdapat perbedaan waktu selama 27 menit yang menghasilkan efisiensi dalam pencarian barang setelah arrangement. Penilaian konsistensi perlu dilaksanakan minimal satu kali seminggu., Retail is currently one of the contributors to economic turnaround in Indonesia. Customer demand related to products in a certain quantity are continuous with the time to search for products in the backroom. This creates a crucial problem if the placement of products in the backroom is still uncoordinated, it can cause work inefficiency. Rearranging products in the backroom into per-brand categories aims to make it easier to place and retrieve products in the backroom area also minimizing time searching for goods. The results showed a significant effect on the rearrangement of trade goods in the backroom by relabeling storage shelves. There is a time difference of 27 minutes which results in efficiency in searching for goods after arrangement. Consistency assessment needs to be carried out at least once a week.
Keyword: backroom, item search, storage racks, layout of goods

Judul: Optimization of Facility Layout Systems,  Display, and Inventory Management at Meatly Shop Sijamal Corporation
Abstrak: Meatly Toko Daging memerlukan standar sistem untuk menjamin kualitas produk dan kepuasan konsumen dalam menjalankan bisnis frozen food. Namun, Meatly masih menghadapi masalah dalam optimasi tata letak fasilitas, tata letak display, dan peramalan penjualan produk. Tujuan penelitian ini adalah memberikan rekomendasi perbaikan menggunakan metode Systematic Layout Planning (SLP) dengan algoritma Computerized Relationship Layout Planning (CORELAP), Blocplan, dan kecerdasan buatan (Artificial Intellegent) untuk tata letak fasilitas. Tata letak display dioptimalkan dengan Market Basket Analysis (MBA), dan peramalan penjualan menggunakan Double Exponential Smoothing. Berdasarkan hasil optimasi sistem, terdapat peningkatan efisiensi penggunaan lahan sebesar 9,62% dan penurunan jarak perpindahan sebesar 7,55%. Pada tata letak display, dilakukan tiga perubahan letak kategori produk. Sedangkan untuk peramalan, didapatkan rekomendasi metode yang tepat dan akurat., Meatly Meat Shop requires a standard system to guarantee product quality and consumer satisfaction when running a frozen food business. However, Meatly still faces problems in optimizing facility layout, display layout, and product sales forecasting. This research aims to provide recommendations for improvements using the Systematic Layout Planning (SLP) method with the Computerized Relationship Layout Planning (CORELAP), Blocplan, and artificial intelligence algorithms for facility layout. The display layout is optimized using Market Basket Analysis (MBA), and sales forecasting uses Double Exponential Smoothing. Based on the system optimization results, there was an increase in land use efficiency by 9.62% and a decrease in movement distance by 7.55%. In the display layout, three changes were made to the location of product categories. Meanwhile, recommendations for appropriate and accurate methods were obtained for forecasting.
Keyword: Artficial Intellegence Market Basket Analysis, Computerized  Relationship Layout Planning, Double Exponential Smoothing, Optimasi sistem

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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