Judul: Pengaruh Kemitraan Terhadap Pendapatan Petani Manggis Di Desa Karacak Kecamatan Leuwiliang Kabupaten Bogor
Abstrak: Mangosteen is a fruit tree crop that comes from a shady tropical forests in Southeast Asia. Mostly comes from Malaysian and Indonesian jungle. Mangosteen fruits one of Indonesia'sleading commodities for agribussiness. And therefore mangosteen have the potential to be exported to foreign countries. But the limitations of mangosteen farmers towards price information and market assurance are recognized as the greatest obstacle to developing the potential of the mangosteen fruit. One effort to resolve that problems is by using the partnership. Mangosteen farmers in Karacak Village, Leuwiliang, Bogor, has already made a partnership with PT. Agung Mustika Selaras. The aim of this research is to describes the implementation of partnership mechanism between PT. Agung Mustika Selaras with mangosteen farmers in Karacak Village, Leuwiliang, Bogor and also to analyzes the influence of partnership toward mangosteen farmer’s income in the Karacak village, Leuwiliang, Bogor. Data for this research was taken from October 2012 to November 2012. The respondent of this research is all partners farmer in Karacak village with the amount 23 farmers and non partner farmers with the amount 25 farmers This research is analyzed by using descriptive analysis, descriptive statistical , analysis of farming income, and the ratios (R/C).
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Judul: Analisis Efisiesi Tataniaga Komoditas Manggis: Studi Kasus Di Desa Kacarak, Kecamatan Leuwiliang, Bogor
Abstrak: Mangosteen is a tropical fruit with high economic value. Its high potencial for trading require a good and efficient marketing. Bogor is placed in the second of the biggest mangosteen centers of West Java after Tasikmalaya. It has high potency in mangosteen production, especially in Karacak village, sub district of Leuwiliang. The weak of farmers' bargaining position made the selling price in farmer level become low. Unfair margin and share distribution made the bargaining position of the farmer became worsen. The high selling price both in the domestic and overseas supposed to increase the farmers profits, however the major benefit only gained by marketing institutions. Based on the research, the marketing of mangosteen in Karacak Village was inefficient.The market structure was formed into the structure that leads to imperfectly competitive markets. There were five marketing forms of mangosteen in Karacak village. Market conduct was shown by selling and purchasing practice with the deal between actors of marketing system, price formation from bargaining that tend to set into higher level by the marketing institutions. Based on the analysis of marketing margins, the farmer's share, and the ratio of benefits and costs shown that an efficient marketing mangosteen for export purposes can use the third marketing channels while domestic marketing can use the fifth channel.
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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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