Judul: Kontribusi Sektor Kehutanan terhadap Ekonomi Kabupaten Sukabumi
Abstrak: Peran sektor kehutanan Kabupaten Sukabumi secara konvensional ditunjukkan oleh besaran persentase yang disumbangkan sektor ini terhadap total Produk Domestik Regional Bruto (PDRB). Nilai tambah bruto industri kehutanan masih tergabung di dalam subsektor Industri Pengolahan. Keadaan ini membuat peranan sektor kehutanan terlihat lebih rendah. Tujuan peneltian ini adalah menghitung kontribusi sektor kehutanan terhadap PDRB Kabupaten Sukabumi dan menemukan prioritas kebijakan pembangunan kehutanan dalam upaya peningkatan kontribusi sektor kehutanan. Hasil penelitian menunjukkan bahwa kontribusi sektor kehutanan Kabupaten Sukabumi terhadap total PDRB Kabupaten Sukabumi pada tahun 2000 sampai 2011 berkisar 2,40% hingga 5,36%. Sektor kehutanan merupakan sektor basis di Kabupaten Sukabumi dengan nilai Location Quotient 1,05-1,44. Nilai Multiplier Effect berkisar 41,23 hingga 43,05. Sektor kehutanan Kabupaten Sukabumi berada dalam kondisi memiliki peluang dan kekuatan sehingga strategi yang harus diterapkan adalah mendukung kebijakan pertumbuhan yang agresif. Urutan utama prioritas kebijakan adalah Pengelolaan Hutan Bersama Masyarakat dan perluasan hutan rakyat, diikuti pengembangan ekowisata, penguatan industri, dan rehabilitasi lahan kritis….
Keyword: Forestry, RGDP, SWOT, AHP, Policy

Judul: Kontribusi Sektor Kehutanan terhadap Ekonomi Kabupaten Sukabumi
Abstrak: Conventionally, the role of forestry sector in the district of Sukabumi is indicated by its contribution to the Regional Gross Domestic Product (RGDP). However, gross value added that generated from timber industry was not taken into account. This value was included into manufacturing sector. This situation undermined the role of the forestry sector. The objectives of this study are to calculate the contribution of the forestry sector to the RGDP of Sukabumi and to determine policy alternative priority that improve forest sector contribution. The results showed the contribution of forestry sector in the period 2000 to 2011 ranged from 2.40% to 5.36%. This forestry sector is a major sector as indicated by Location Quotient value ranging from 1.05 to 1.44. The multiplier effect values varied from 41.23 to 43.05. The forestry sector was strong and had capability to realize opportunities. Therefore, the chosen strategy should support an aggressive growth policy. Expanding of collaborative and community forest management is the highest priority, followed by developing ecotourism, strengthening timber industry and rehabilitating critical land.
Keyword: policy, AHP, SWOT, RGDP, forestry

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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