Judul: Faktor - Faktor yang Mempengaruhi Intensitas Pengelolaan Hutan Rakyat di Desa Gunung Sari, Kecamatan Pamijahan, Kabupaten Bogor
Abstrak: Saat ini banyak terjadi degradasi hutan dan lahan sehingga menyebabkan terjadinya lahan kritis yang berpengaruh terhadap supply dan demand bahan baku kayu. Pembangunan hutan rakyat menjadi hal yang penting dalam upaya mempercepat rehabilitasi hutan dan lahan serta pemenuhan kebutuhan kayu. Keberhasilan pembangunan dan pengembangan hutan rakyat tergantung pada intensitas pengelolaan hutan rakyat yang dilakukan oleh petani. Jika hutan rakyat dikembangkan dengan baik maka produktifitas lahan meningkat, produksi kayu terpenuhi secara berkelanjutan sehingga kesejahteraan petani meningkat. Penelitian ini dilaksanakan di Desa Gunung Sari pada bulan Mei hingga Juni 2010. Data yang digunakan bersumber dari data primer berupa kuisioner dan data sekunder berupa data monografi desa. Hasil penelitian ini diharapkan dapat menggambarkan tingkat intensitas pengelolaan hutan rakyat yang dilakukan oleh petani dan mengetahui keterkaitan intensitas pengelolaan hutan rakyat dengan persepsi terhadap pembangunan hutan rakyat, motivasi dan aktualisasi diri. Aktualisasi terdiri dari faktor internal dan faktor eksternal. Faktor internal terdiri dari umur, pendidikan dan pengalaman usahatani sedangkan faktor eksternal terdiri dari kelompok tani, penyuluhan dan akses informasi.
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Judul: Faktor-Faktor yang Mempengaruhi Intensitas Pengelolaan Hutan Rakyat dan Strategi Pengembangan Hutan Rakyat di Kecamatan Sendang Kabupaten Tulungagung
Abstrak: Community forests in Tulungagung Regency have to be managed intensively to increase the land productivity and wood supply from community forests. Community forest management intensity could be affected by the characteristics of farmers, farmers perceptions, and motivation. Community forest development in Tulungagung need appropriate strategies. Based on correlation test showed perceptions and motivations of farmers significantly effected of the level of intensity of community forest management. The results of the strategy formulation in development of community forest using analysis methods Internal Factor Evaluation - External Factor Evaluation, SWOT analysis and Quantitative Strategic Planning Matrix analysis showed that the priority strategies are: 1) build cooperation between community forest farmers group with timber industry. 2) Using the source of government funds for the program and assisting community forest farmers. 3) Increasing the number of extention worker 4) Maximizing the capacity of extention worker role in disseminating the government program
Keyword: Bogor Agricultural University (IPB), strategy, perception, intensity, motivation, community forests

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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