Judul: Pengaruh Perluasan Taman Nasional Gunung Gede Pangrango terhadap Penguasaan Lahan dan Strategi Nafkah Rumah Tangga.
Abstrak: Tujuan Penelitian ini adalah untuk menganalisis pengaruh perluasan Taman Nasional Gunung Gede Pangrango terhadap (i) penguasaan lahan, (ii) strategi nafkah rumah tangga petani; dan (iii) menganalisis hubungan penguasaan lahan dan strategi nafkah. Lokasi penelitian dilaksanakan di Desa Sukatani, Kecamatan Pacet, Kabupaten Cianjur, Jawa Barat. Penelitian ini menggunakan pendekatan survei yang dikombinasikan dengan wawancara mendalam. Hasil penelitian menunjukan bahwa, pertama, mengingat kebijakan perluasan taman nasional belum sepenuhnya dilaksanakan hingga saat ini, maka penguasaan lahan, status lahan, dan pola hubungan agraria belum mengalami perubahan. Kedua, implikasi lebih lanjut, sebagai akibat dari belum adanya perubahan penguasaan lahan strategi nafkah rumah tangga responden juga belum mengalami perubahan. Ketiga, apabila kebijakan perluasan TNGGP diimplementasikan maka pendapatan rumah tangga petani responden dari sektor on farm akan berkurang sebesar 50.08 persen atau sebesar Rp 13.522.000 per rumah tangga per tahun.
Keyword: Pendapatan, Penguasaan Lahan, Strategi Nafkah, Taman Nasional

Judul: Dampak Perluasan Taman Nasional Gunung Gede Pangrango terhadap Strategi Nafkah Rumahtangga Petani Desa Ciputri
Abstrak: The purpose of this research is to analyze land tenure situations at Ciputri Village before and after the expansion of Gunung Gede and Pangrango National Park; and to analyse the impact of national park expansionto the farmer’s livelihood strategy. The research applied a quantitative approach supported by qualitative data. Quantitative data obtained through structured questionnaires to 30 household’s repondents. The qualitative approach applied observation instrument, in-depth interviews, and secondary document collections. The results are, first, the expansion of TNGGP significantly change the tenurial structure of Ciputri’s farmers. Before the expansion, all farmers’ respondents operate land at a minimum of 2,000 m2 of land. However, after the expansion, most of the farmers or 21 out of 30 respondent fall into landless farmers (or tuna kisma). Second, the land tenure changes,furthermore, affect significantly the livelihood strategy of the farmers’ respondent. Before the expansion of TNGGP, the livelihood of all respondent are only on agriculture as farmer operator. However, after the expansion, the livelihood of the farmers changes dramatically. As much as 22 out of 30 respondent engage in two jobs for their livelihood such as work as daily farm labor and various daily service work. The others, 6 respondent, engage in three to four jobs for their livelihood such as work as daily farm labor, smallholder farmers, and various type of daily service work in the village.
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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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