Judul: Rencana Bisnis Pengembangan Rimpang Kunyit dengan Pendekatan Cooperative Entrepreneur di Bogor
Abstrak: Preparation of business plan is required to simplify and clarify the illustration for entering or starting a business. The non-financial analysis of this business consist of market aspect, operational aspect, organization and human resources aspect, and risk analysis. Product of this processing business is a powdered turmeric are packed with vacuum packaging technology with sell price 228.9 USD (Rp2 610 000) in 10 kg packages. Market target of this product is overseas market, especially in Argentina. The selected enterprise of this business is cooperative where the members are from the turmeric farmers in Bogor. Net profit obtained in the first year is Rp263 205 000, Rp153 383 in the second year, and Rp193 216 in the next years. With cooperative entrepreneur approaches, farmers as a raw material supplier will get higher sell price, there is Rp9 000 in the first year and Rp12 000 in the next years.
Keyword: Bogor Agricultural University (IPB), turmeric, cooperative entrepreneur, business plan

Judul: Rencana Bisnis Produk Temulawak Bubuk Berorientasi Ekspor Melalui Pendekatan Cooperative Entrepreneur di Bogor
Abstrak: Temulawak (Curcuma xanthorriza Roxb.) is one of biopharmaceutical plant that has a potency to be developed in West Java. This research aims to design the business plan of the processing fresh java turmeric through Cooperative Entrepreneur approach. The business will be located in Bogor. The production processing is converting fresh java turmeric into granule using modern technology, and packed using vacuum packing. The market target of this product is herbal medicine industries and phyto-pharmacy in America. The product is sold at the price of Rp 244 000 per kg or USD 21.4. Financial analysis shows that the business is highly prospective and can be implemented. Net profit in the first year is Rp556 501 000, second until third year is Rp535 503 000, and the next year is Rp562 785 000. Through cooperative entrepreneur approach, farmers can obtain the higher price so it can increase the wealthiness of the farmers.
Keyword: java turmeric., cooperative entrepreneur, business plans

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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