Judul: Analisis Risiko Produksi Usaha Peternakan Ayam Kampung di PT Sumber Unggas Kabupaten Bogor
Abstrak: Konsumsi per kapita ayam kampung meningkat setiap tahun, peningkatan itu mengindikasikan peluang usaha ayam kampung memiliki prospek yang baik. Hal itu dimanfaatkan oleh PT Sumber Unggas yaitu dengan menjalankan usaha peternakan ayam kampung. Tetapi, tingkat mortalitas ayam selalu melebihi standar yang ditetapkan perusahaan dan berfluktusai selama 18 siklus poduksi, hal itu disebabkan keberadaan risiko produksi. Penelitian ini bertujuan untuk mengetahui sumber risiko produksi ayam kampung yang sesuai dengan kondisi peternakan. Kemudian menganalisis probabilitas dan dampak risiko serta merumuskan alternatif strategi. Penelitian ini menggunakan metode z-score dan Value at Risk dalam menganalisa probabilitas dan dampak risiko. Hasil dari penelitian adalah teridentifikasinya empat sumber risiko yaitu penyakit, suhu, kualitas Day Old Chicken (DOC), dan afkir. Nilai probabilitas yang diperoleh adalah penyakit 39.74 persen, afkir 33 persen, suhu 32.28 persen, dan kualitas DOC 25.14 persen. Sedangkan nilai dampak risiko yang diperoleh adalah penyakit Rp130 933 510, afkir Rp47 579 427, suhu Rp31 266 623, dan kualitas DOC Rp33 476 182. Penelitian ini merumuskan dua strategi yaitu strategi preventif dan strategi mitigasi dalam menangani sumber risiko yang teridentifikasi.
Keyword: ayam kampung, mitigasi, preventif, risiko produksi

Judul: Analisis Risiko Produksi pada Peternakan Ayam Broiler di Kampung Kandang, Desa Tegal, Kecamatan Kemang, Kabupaten Bogor, Jawa Barat.
Abstrak: Poultry is an important sub sector in contributing to GDP. One of poultry commodities which has big potential is broiler farm. Bogor District is one of broiler production central in West Java with growth rate about 7.75%. Meanwhile, broiler production in Bogor District is fluctuation. The purpose of this research is to analyze the risk of production sources, analyze the probability of risk source, and analyze the impact of risk sources in Kampung Kandang. Risk analysis broiler production was examined using primary data and secondary data. Primary data obtained through observation, interviews, discussions, and questionnaires with the farmers, while the secondary data obtained from the relevant literature. Method of data analysis on this research use descriptive analysis of the data using qualitative and quantitative risk analysis using the data. The sources of risk found broiler production is a weather, disease, and predators. Disease are a source of risk that may occur and the greatest impact, amounting to 91.62 percent and Rp 7 857 249. The results of mapping risk indicate that there are two kinds of management strategies such as preventive and mitigation strategies. In conducting a proposed strategy, the farmers should do strategy by prioritizing strategy that is caused by a source of risk of disease
Keyword: broiler, risk sources, Production risk analysis

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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