Judul: Pengembangan Model Bisnis Manisan Cabai Merah (Capsicum annum)
Abstrak: Candied red chilli (Capsicum annuum) is one kind of processed vegetable innovation which added by sugar as natural preservative. The objective of research was to generate product profile and determine the best business model design. The method consisted of two stages such as of product profile development and business model development. Based on the result, candied chilli product has moisture content of < 15 %, red-colored and had combined sweet and few spicy flavor. Candied red chilli had met quality standard of dried candied product in SNI 01-3710-1995. Rate of diatery index (% RDI) of the product was 3 % of fat, 5 % of protein, carbohydrate content of 27 %, so that a single pack of 100 g could produce 18 % calori. The product was packaged using primary packaging by combination of aluminum foil and plastic PP (poly propilene) which was practical and easy to open. Initial business model was assumed based on sweets vegetables business models in Surabaya and sweets business in Bogor city. The business model changed after development of the best product profile and business model development phase such as problem and solution tests. Product profile development phase changed elements of business model such as key partnership, key activities, key resources and cost structure. Business model development phase changed four elements of business model such as customer segment, value propotions, channels and customer relationship. Final result of iteration changed former concept of the product to be more favored by consumers.
Keyword: red chilli, candied, business model

Judul: Pengembangan Model Bisnis Produk Manisan Belimbing Manis (Averrhoa carambola L) Kering
Abstrak: Star fruit is one of agricultural commodity which is perishable, that leads to quality declining and limited availability in market. Dried-candied star fruit processing is one of technology process alternatives in order to extend product shelf life. The research was based on technopreneurship program and consisted of three main stages such as initial business model identification, product profile development, and business model development. Initial model business was identified by determining assumptions of nine business model elements. Product profile development stage generated the best formula of dried-candied star fruit was immertion fruit in a solution of lime 0,1% for 1 hour with concentration of sugar solution 30%. Result of business model development in value propositions were as snack which is expected to be healthy and practical, free of preservatives, and contain vitamins for human body endurance. Customer segments were women aged 19–45 years old who would like to consume snacks and fresh or processed fruits. Revenue streams obtained by selling the product in channels such as sweet confectionary store, gift shop, retailer, and wholesaler.
Keyword: star fruit, dried-candied, business model

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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