Judul: Kajian pengembangan peternakan sapi potong di Kecamatan Agrabinta, Kabupaten Cianjur
Abstrak: The objective of the research were 1) to know characteristic of beef cattle farmer in related to management of beef cattle farming, 2) to analyzed technical potency of beef cattle farm in Agrabinta Sub-District, 3) to analyzed farmer earning in beef cattle farm business , 4) to formulate the strategy of beef cattle development in Agrabinta Sub-District. Primary data obtained by direct interview with the beef cattle farmer, used questionnaire as the tool. Secondary data obtained from relevant institutions sources that related with the topic of the research, data analyzed descriptive corelation method. Base on data analyzed showed that technical management of beef cattle farm by farmer characterize still in the traditional system. The return cost ratio (R/C ratio) of beef cattle farm business analysis, showed that ratio as 1.51 value. It means that the beef cattle farm business were profitable. Beef cattle farm income contributed 11.11 persen to total family income or Rp. 1,054,020.26. The results from Added Capacity of Ruminant Population (ACRP) analyzed at Sinarlaut village, Bojongkaso village, Tanjungsari village, Wanasari village, Mekarsari village, Sukamanah village respectively were -903.58 Animal Unit (AU); 242.44 AU; -340.40 AU; 5096 AU; -337.90 AU, the positive value explain that in these villages can accept more beef cattle number, such Bojongkaso village and Wanasari village. The strategy of beef cattle farming development in Agrabinta Sub-District were showed at Growth Oriented Strategy, it can be implemented by making Demonstration Plot of beef cattle farm intensification, recruit more animal health officer to optimalisation of services and cooperation with other relevant institutions.
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Judul: Kajian Pengembangan Peternakan Sapi Potong Di Kecamatan Agrabin, Kabupaten Cianjur
Abstrak: Peternakan adalah bagian dari sektor pertanian yang merupakan sub sektor yang penting dalam menunjang perekonomian masyarakat. Ternak sapi potong merupakan salah satu sumber protein penghasil daging, memiliki potensi untuk dikembangkan. Potensi ternak sapi potong tersebar di kabupaten-kabupaten yang ada di Jawa Barat, salah satunya adalah Kabupaten Cianjur. Wilayah Kabupaten Cianjur yang mungkin dikembangkan adalah Kecamatan Agrabinta. Tujuan penelitian ini adalah 1) mengetahui karakteristik peternak dan budidaya ternak sapi potong di Kecamatan Agrabinta, 2) menganalisa potensi teknis usaha ternak sapi potong di Kecamatan Agrabinta, 3) menganalisa tingkat pendapatan peternak sapi potong di Kecamatan Agrabinta dan 4) merumuskan strategi pengembangan ternak sapi potong yang sesuai dengan potensi yang dimiliki oleh Kecamatan Agrabinta.
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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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