Judul: Tinjauan agroklimat tanaman pangan di Kabupaten Bogor
Abstrak: Penduduk Indonesia sebagian besar hidup di desa-desa dengan mata pencaharian utamanya bertani. Bertani bagi me- reka merupakan usaha untuk mempertahankan hidupnya, sehing- ga hasil yang mereka usahakan umumnya merupakan bekal bagi kebutuhan rumah tangganya sampai musim tanam. berikutnya. Hasil yang mereka jual biasanya merupakan sisa dari hasil yang dikonsumsi. Kebutuhan pangan secara nasional akan semakin mening- kat dengan meningkatnya jumlah penduduk. Oleh karena itu untuk mencukupi kebutuhan pangan yang semakin meningkat usaha-usaha ke arah peningkatan produksi pangan harus di- lakukan dengan sungguh-sungguh. Hal ini berarti bahwa pembangunan sektor pertanian untuk meningkatkan produksi pangan perlu mendapat perhatian yang besar. Pembangunan sektor pertanian untuk meningkatkan pro- duksi pangan dilaksanakan melalui usaha-usaha intensifi- kasi, ekstensifikasi, diversifikasi dan rehabilitasi seca- ra terpadu, serasi dan merata dengan tetap memelihara ke- lestarian alam dan lingkungan hidup. Pembangunan sektor pertanian selanjutnya ditujukan untuk mewujudkan pertani- an tangguh yang dapat mendukung pembangunan bidang indus- tri. ...
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Judul: Analisis Pengetahuan, Persepsi, dan Sikap Pemangku Kebijakan Terhadap Perlindungan Lahan Pertanian Pangan Berkelanjutan di Kabupaten Bogor
Abstrak: The objective of this study are to analyze production, availability and consumption especially rice, to analyze land availability, and to analyze stakeholders’ knowledge, perception and attitude of agricultural land protection in Bogor District. The study found that average of rice production in Bogor District remains droped until 0.18% a year. The average of rice availability can suffice 64.6% rice consumtion in region, while the rest 35.4% was imported from other district. Food consumption pattern of carbohydrate fulfillment dominated by rice (75.7%) this equal to 275.8 g/cap/day or 100.67 kg/cap/year, so that dietary food pattern score remain 72.5. Land rice production prediction was designed with several scenarios showed that the 4th scenario was the best scenario. Stakeholder’s knowledge and perception was different to land conservation and affect to attitude to land conservation. In addition, attitude on agricultural land protection was depending on different interest that has to be facilitated by the stakeholders.
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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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