Judul: Evaluasi Teknis Pemeliharaan Sapi Perah Friesian Holstein Peternakan Rakyat Di Desa Cibeureum Cisarua Kabupaten Bogor
Abstrak: This research was conducted to evaluate Farming practices of small holder (breeding and reproduction, feeding, management, housing and equipment, and animal health) at dairy farm Cibeureum located in Cisarua Bogor. This research was carried out from March to August 2010. Data were collected from 40 farms using survey method based on field observation, interview with farmers, and direct measurement. Secondary data were collected from local subdistrict and Giri Tani cooperative. The data were frequency tabulated and analyzed using. The the differences between observation and expectation value were analyzed ysing chisquare test (X2). The result showed that farmers knowledge and skills of dairy farming practices were lower than expectated value for breeding and reproduction (75,42%), selection method (34,37%). Therefore, improving farmers knowledge and skill and skill on the most critical point such as cattle selection can be used as a strategy to improve productivity on their farms.
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Judul: Tatalaksana kesehatan peternakan sapi perah rakyat di Kecamatan Cisarua Kabupaten Bogor (Studi kasus KTTSP Baru Sireum)
Abstrak: The aim of this study was to describe the smallholder dairy farming’s management at Cisarua, Bogor. This study was conducted during January until July 2012. Respondent were consisting of 13 smallholder dairy farmer from KTTSP Baru Sireum. The data were collected by interview used questionnaires and checklist about farmers characteristic, management practices of farmers, health and reproduction management, and sanitation. Data were analyzed by using rank Spearman correlation test. The research showed that characteristics of farmers has not significantly correlation with farm management. Majority of farmers in those area were included in good category in managing their smallholder dairy farm, except in health and reproduction management and waste management.
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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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