Judul: Faktor-faktor yang mempengaruhi produksi manggis di Desa Karacak dan Desa Barengkok Kecamatan Leuwiliang Kabupaten Bogor
Abstrak: Bogor district is known as a central of developing of mangosteen commodity in Indonesia. This is supported not only by potential of agricultural in Bogor district but also the condition of agroecosistem which is very good for mangosteen commodity. Karacak and Barengkok villages in Leuwiliang sub-district are known as a central of mangosteen. The number of crops in this villages have fluctuating in every year cause of some factor, such as the width of area to plant on, the age of mangosteen tree and human resources. Based on these, the goal of research is (1) to identify the that can be influence the mangosteen crops in Karacak and Barengkok villages as sub district of Leuwiliang, Bogor district and (2) to compare the mangosteen crops in these two villages
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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: 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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