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: Re-Designing The Retail Business Warehouse Layout Using Dedicated Storage, Shared Storage, and The Pareto Effect Method
Abstrak: Manajemen pergudangan adalah hal yang penting bagi suatu bisnis salah satunya yaitu bisnis ritel. PT AEON Indonesia adalah salah satu perusahaan ritel yang sedang berkembang pesat di Indonesia. Sistem tata letak gudang yang diterapkan pada PT AEON Indonesia hanya menggunakan metode dedicated storage dengan jenis penyimpanan rak. Namun, peletakan produk belum sesuai pengkategorian yang tertera dan beberapa shelving masih terlihat kosong yang membuat gudang menjadi tidak rapi. Penelitian dilakukan di backroom milk, baby food, dan baby needs PT AEON Indonesia Cabang Sentul pada bulan Februari 2023 hingga Juni 2023. Penelitian ini bertujuan untuk memberikan rekomendasi tata letak gudang yang lebih efektif dan efisien dilihat dari penggunaan ruang serta total jarak tempuh produk. Tata letak gudang baru disusun menggunakan gabungan metode dedicated storage, shared storage, dan metode pareto effect. Tata letak gudang baru mampu mereduksi total jarak tempuh keseluruhan produk sebesar 21,5% dan mengoptimalkan penggunaan ruang sehingga terdapat ruang yang dapat digunakan untuk mengaktualisasikan shelving simpan barang recekan dan temporary area., Warehousing management is important for a business, one of which is a retail business. PT AEON Indonesia is a fast-growing retail company in Indonesia. The warehouse layout system implemented at PT AEON Indonesia only uses the dedicated storage method with the rack storage type. However, product placement is not in accordance with the categorization listed and several shelves still look empty, making the warehouse untidy. The research was conducted at backroom milk, baby food, and baby needs PT AEON Indonesia Sentul branch from February 2023 to June 2023. This study aims to provide recommendations for warehouse layouts that are more effective and efficient in terms of space usage and the total mileage of products. The new warehouse layout was prepared using a combination of several methods, namely the dedicated storage method, shared storage, and the pareto effect method. The new warehouse layout is able to reduce the total mileage of all products by 21.5% and optimize the use of space so that there are spaces to realize recekan shelves and temporary areas.
Keyword: activities, comparison of T/S values, space requirement, total mileage, warehouse layout

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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