Judul: Analisis Perkembangan dan Peramalan Ekspor Pertanian Indonesia Tahun 1990-2000
Abstrak: Export, is needed signif"icanlly to produce device. It grows not only national production sector especially export oriented but also it absorbs manpower. Non oil and petroleum export, has shown an important escalation, especially after the price of erucle oil dropped in world trading in 1981 which lead to the length of world recession. For Indonesia, the effect of unstable oil price in the international market need to be responded with new alternative solution namely by making the efficient lise of other more marketable commodities outward oil and petroleum. Agriculture, as one of non-oil and petroleum sector, has an important role in bringing Indonesia as agricultural country in which most of people depend mainly on agriculture
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Judul: Analisa faktor-faktor yang mempengaruhi dan prospek ekspor komoditi hasil pertanian Indonesia
Abstrak: Peranan sektor pertanian sangat penting dalam perekonomi- an Indonesia, karena itu sejak Pelita I pembangunan sektor ini memperoleh prioritas utama. Demikian pula pada Pelita yang akan datang. Perkembangan produksi pangan dan bahan baku untuk industri di dalam negeri serta bahan ekspor yang dihasilkannya akan tetap memiliki pengaruh yang sangat besar terhadap perkem bangan harga, persediaan bahan mentah dan pemupukan devisa negara. (Hedisapoetro, S., 1982) Sektoe pertanian mempunyai peranan yang penting, baik dalam menunjang pertumbuhan ekonomi, menyediakan lapangan kerja bagi sebagian besar penduduk, maupun sebagai sumber penghasil devisa terbesar diluar minyak bumi dan gas alam cair: Kegiatan untuk peringkatan dan pengembangan ekspor komuditi pertanian harus pula disertai dengan usana meningkatkan pen dapatan petani dan memperluas kesempatan kerja secara merata serta sekaligus berusaha memantapkan stabilitas nasional. Menteri Pertanian, 1979) Urientasi ekspor hasil pertanian sesuai dengan tanapannya harus berudan dari ekspor nasil pertanian dalam bentuk mentah menjadi ekspor nasil pertanian dentuk olanan. Pembangunan ekonomi seuagai titik berat pembangunan nasional jangka panjang, mempunyai sasaran utama tercapainya keseimbangan antara sextor pertanian dengan sektor industri. ...
Keyword: Pertanian

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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