Judul: Perencanaan pengembangan peternakan sapi potong di Distrik Kebar Papua Barat menggunakan peta arahan penggunaan lahan
Abstrak: Districk Kebar is an area in Papua Barat. Districk Kebar has land use map that can used for made a plann to developed livestock. The land use map made by Pusat Penelitian dan Pengembangan Tanah dan Agroklimat. The map used as reference. The results of calculation showed that Districk Kebar can carrying 72.987 Animal Unit (AU). Metode was used in this research was based on potential productions of plants and potential carrying capacity of calf. Material of research used were landset map and microsoft excel. In this place can be developed livestock. The result showed that potential production of plants in Kebar can provided forage for CCO are 60.712 AU, VBC are 3.683 AU, and VFC are 8.593 AU.
Keyword: 

Judul: Kajian Kawasan Sapi Potong di Kabupaten Raja Ampat  Provinsi Papua Barat
Abstrak: Penelitian ini bertujuan untuk mengkaji dan merumuskan model kawasan sapi potong berbasis sumberdaya ternak di Kabupaten Raja Ampat. Pelaksanaan penelitian dilakukan di Kampung Sakabu, Kalobo dan Waijan Distrik Salawati Utara, selama Agustus 2008 – Mei 2009. Pengumpulan data menggunakan metode survei terhadap 218 orang peternak responden dan 314 ekor sampel ternak. Data yang diperoleh terdiri atas : (1) data primer, yaitu data hasil pengamatan dan wawancara dengan responden, meliputi ; karakteristik produksi ternak sapi potong, karakteristik peternak, dan pola manajemen produksi sapi potong yang ada; (2) data sekunder, meliputi; karakteristik wilayah yang terdiri dari iklim dan topografi, sistem penggunaan lahan, karakteristik kelembagaan yang ada dan kebijakan pemerintah daerah dalam pengembangan peternakan. Data karakteristik peternak dan pola managemen dianalisis secara deskriptif, produktivitas sapi potong dievaluasi dan diukur berdasarkan estimasi bobot badan. Perbandingan skor nilai pengetahuan, motivasi dan partisipasi peternak dalam pengembangan sapi potong menggunakan metode uji Mann-Whitney. Pengelompokan kesamaan potensi wilayah untuk kawasan sapi potong menggunakan analisis gerombol (Cluster Analisis). Penentuan model kawasan sapi potong menggunakan kriteria dan indikator komponen kawasan meliputi; (1) lahan; (2) kapasitas peningkatan populasi ternak ruminansia (KPPTR) efektif dalam satuan ternak (ST); (3) ternak; (4) teknis budidaya ; (5) peternak; (6) tenaga pendamping; (7) fasilitas dan (8) kelembagaan. Keseluruhan hasil analisis digunakan untuk menyusun strategi pengembangan kawasan, menggunakan analisis SWOT dengan metode tabel IFAS dan EFAS.
Keyword: 

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.
Keyword: