Judul: FINANCIAL FEASIBILITY ANALYSIS OF QURBAN BUSINESS IN FATTING OF SHEEP IN THE ALAM SEJATERA FARM
Abstrak: Domba merupakan salah satu ternak kelompok ruminansia yang memiliki rata-rata laju pertumbuhan populasi yang terus meningkat dan banyak dipelihara sebagai ternak penggemukkan. Domba penggemukkan banyak dijual pada hariraya Idul Adha dikarenakan permintaan pasar yang tinggi serta harga jual yang tinggi. Penelitian ini bertujuan menganalisis tingkat kelayakan finansial usaha qurban penggemukan domba Alam Sejahtera Farm yang berlokasi di Kabupaten Tangerang, dan menganalisis ROI investor. Nilai BEP jumlah domba adalah 53 ekor dengan penjualan menggunakan harga rata rata jual, nilai BEP harga Rp1.736.930, nilaiB/C ratio 1,23 dan nilai ROI investor 23,25%. Data-data tersebut didapatkan pada tahun 2020 yang merupakan data penggemukan yang berlangsung selama 2 bulan. Hasil yang diperoleh menunjukkan bahwa pada usaha penggemukan domba menguntungkan dan bisnis tersebut sangat cocok untuk terus dijalankan., Sheep are one of the ruminant livestock groups that have an average population growth rate that continues to increase and mostly to kept as fattening livestock. Farmers in fattening sheep are usually focused to be soldin Idul Adha, the consideration are the demands of market place and the higher price. This study aimed to analyze the level of feasibility of the AlamSejahtera Farm sheep fattening business located in Kabupaten Tangerang and to analyst the ROI Investor. Sheep BEP value is 53 tails, BEP value of Rp1.736.930, B/C ratio value of 1,23, and investor ROI value of 23,25%. These data are data obtained in 2020 which fattening lasts for 2 months. The results obtained show that sheep fattening is profitable and the business very suitable to be continue.
Keyword: alam sejahtera farm, BEP, B/C Ratio, ROI

Judul: Analisis Kelayakan Usaha Penggemukan Domba Pada Mitra Tani Farm, Kecamatan Ciampea, Kabupaten Bogor
Abstrak: Sheep is the third biggest contributors of ruminant families for meat national product. MT Farm is one of a farm-based agribusiness companies that planning to expand its business to fulfill market requirements. The aim for this study to analyzing the feasibilty of sheep business expansion at MT Farm based on financial and non financial aspects. This study also analyzing sensitiveness levels of business expansion by Switching Value Analysis. Result of this study shows that business expansion by analyzing non financial aspects is feasible to run. Result of financial analysis is also feasible to run based on investment criteria, that NPV Rp 566,181,930, Net BC is 2.01, and IRR is 22.55 percent of Payback Period means investment costs will return in two years four months and one day. While Switching Value Analysis shows the ascend limit of sheep’s mortality is 2.107109305 percent, so ascending in prices of lamb is 3.1854194939394 percent. Switching Value Analysis shows that ascending of sheep’s price give more influences than ascending of sheep’s mortality.
Keyword: sheep, feasibilty analysis, farm, business expansion

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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