Judul: Manajemen resiko usaha peternakan broiler: studi kasus di Sunan Kudus Farm, Kecamatan Ciampea, Kabupaten Bogor
Abstrak: The aims of this research were: 1) to know management of risk, 2) to analyze the level of risk and 3) to know the expected value in Sunan Kudus Farm (SKF). The Methodology of this research is case study with: 1) descriptive design by qualitative analysis to know the risk management of SKF and 2) exploration design by: a) analysis of risk and b) analysis of risk decision using decision tree. Management of production risk not well – managed and marketing risk well – managed. The result of analysis of risk showed that SKF would get the risk amount of Rp 47.629.868,52 (standard deviation) or 1,3 (coeficient variation) higher than the mean of earning (Rp 36.747.387,92) and SKF would get the lowest earning amount Rp -58.512.349,12. The result of risk decision analysis showed that the expected value in Lebaran period (high demand) are Rp 128.969.580,- if SKF increased the population of broiler and Rp 107.474.650,- if SKF did not do that; the expected value in new period of school (low demand) are Rp 14.368.120,- if SKF decreased the population and Rp 17.960.150,- if SKF did not do that. The conclussion of this research suggest SKF should increase the population of broiler in Lebaran period and do not decrease them in new period of school for the next production period.
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Judul: Production Risk Analysis on Broiler Farm (Case study broiler farm owned Mr. Kamal in Silebu Village, Pancalang Sub District, Kuningan District, West Java) S
Abstrak: Peternakan ayam broiler milik Bapak Kamal menjalankan usaha peternakan melalui hubungan kerjasama kemitraan inti-plasma dengan PT Aretha Nusantara Farm. Meskipun telah menjalin kemitraan inti-plasma, peternakan milik Bapak Kamal tetap menghadapi risiko produksi. Tujuan penelitian ini adalah menganalisis sumber-sumber risiko produksi, menganalisis probabilitas sumber-sumber risiko dengan metode z-score, menganalisis dampak sumbersumber risiko dengan metode value at risk, dan menganalisis alternatif strategi sumber-sumber risiko produksi di peternakan milik Bapak Kamal. Metode analisis yang digunakan adalah analisis deskriptif dan analisis risiko yang terkait dengan tujuan penelitian ini. Sumber risiko yang ditemukan pada produksi ayam broiler adalah kualitas DOC (Day Old Chick) yang buruk, kondisi cuaca, serangan penyakit, dan hama predator. Hasil pemetaan risiko menunjukkan bahwa ada dua jenis strategi manajemen risiko yaitu strategi preventif dan strategi mitigasi. Sumber risiko yang sebaiknya diutamakan dalam melakukan majemen risiko adalah kualitas DOC yang buruk karena merupakan sumber risiko yang memiliki kemungkinan dan dampak paling besar.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Mapping, Methods of analysis, Risk Management, Source of risk, Broiler chicken farm, Nucleus plasma partnership, Production risk, Diseases, Mitigation strategics

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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