Judul: Analisis Faktor-Faktor yang Mempengaruhi Risiko Produksi Kelinci di Kecamatan Ciawi Kabupaten Bogor.
Abstrak: Kecamatan Ciawi adalah salah satu penghasil kelinci terbesar di Kabupaten Bogor, namun produktivitas kelinci di Kecamatan Ciawi berfluktuasi, menandakan terjadinya risiko produksi. Tujuan dari penelitian ini adalah untuk menganalisis pengaruh faktor-faktor produksi terhadap risiko produksi kelinci yang dihadapi oleh peternak di Kecamatan Ciawi. Jumlah sampel yang digunakan dalam penelitian ini ada 33 responden. Metode yang digunakan dalam penentuan sampel adalah purposive sampling. Penelitian ini menggunakan model Just dan Pope sebagai metode analisis data. Hasil penelitian ini menunjukkan bahwa peningkatan jumlah indukan betina dan jantan meningkatkan produksi kelinci secara nyata, peningkatan penggunaan obat dapat meningkatkan risiko produksi kelinci secara nyata (risk inducing factor) dan peningkatan penggunaan suplemen dapat mengurangi risiko produksi kelinci secara nyata (risk reducing factor).
Keyword: kelinci, model Just dan Pope, risiko produksi

Judul: Analisis Risiko Produksi Peternakan Ayam Broiler Di Kecamatan Ciampea, Kabupaten Bogor
Abstrak: Ciampea is one of the main areas centre broiler production in Bogor Regency. Fluctuation product in Ciampea indicates production risk. The risk analysis of broiler chicken production is investigated by using primary and secondary data. Data analysis method used is descriptive analysis by using qualitative data and quantitative. Then risk analysis by using quantitative data. Based on the observation in the research site, risk sources of broiler chicken are disease, climate, pest, and quality of DOC. Disease outbreaks is the risk sourcethat probably happens and the biggest effect that is 46% and at least Rp15 628 053. The risk mapping result shows that disease, climate and DOC can be solved with preventive strategy.
Keyword: preventive strategy, risk sources, Risk analysis production

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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