Judul: Feasibility Analysis of Dried Insect Farm business at PT. Sugeng Jaya Farm
Abstrak: Dried insects is a type of premium high protein feed. The dried insects used are mealworms (Tenebrio molitor), superworms (Zophobas morio) and two-spotted crickets (Gryllus bimaculatus), as well as fish, birds, hedgehogs, and other exotic animal feeds. This study aims to analyze the feasibility of PT Sugeng Jaya Farm's dried insect breeding business. This researchrefersto the case study method. There are several methods for assessing a business, including Break Event Points (BEP), Benefit-Cost Ratio (B / C ratio), Return on investment (ROI). The results showed that the BEP value that reached the break-evenpoint only appliesto some products, the results of the average B / C analysis of the product are more than 1 (> 1), and the ROI value of this business shows an increasing value, in 2019 it has a value of 3, 03%, while in 2020 it has a value of 27.65%. Itis concluded that PTSugeng Jaya Farm's dried insect business can be said to be feasible to run and develop.
Keyword: dried insect, feasibility analysis, PT Sugeng Jaya Farm's

Judul: Evaluasi Usaha Peternakan Ulat Tepung (Tenebrio Molitor) Di Desa Cisalada, Kecamatan Cigombong, Kabupaten Bogor
Abstrak: Mealworm (Tenebrio molitor) breeding is a promising business, butthe success of this business still affected by internal and external factors. The purpose of this research was to evaluate a failure mealworm business in Cisalada village, Cigombong sub-district, Bogor. The research was conducted from Septemberto November 2014. Data include were internal and external factors for IFE-EFE analysis. IE analysiswas used to identify business position while SWOT analysisformulated alternative strategies for this business. The failure caused by business weakness, especially in lack of capital and rearing management. Before the failure, this business was in growth and build position(quadrant II). Suggested strategies were to maintain mealworm quality and marketability, market improve, strengthen the group, negotiation skills improve, build partnership, technical efficiency improve, and develop mealworm byproduct.
Keyword: IE analysis, IFE-EFE analysis, mealworm, SWOT analysis

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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