Judul: Feasibility Study of Agroforestry in Karacak Village,  Leuwiliang District, Bogor Regency
Abstrak: MOCHAMAD ALDI YUSUF. Feasibility Study of Agroforestry in Karacak Village, Leuwiliang District, Bogor Regency. Supervised by DODIK RIDHO NURROCHMAT. The agroforestry pattern in mixed gardens in Karacak Village is very important for the farmers’ livelihood. This study aims to determine the contribution of agroforestry community forest to farmers' income and analyze the feasibility of agroforestry community forest business in Karacak Village. This study's primary data collection was conducted by interviewing the head or members of the farmer's household and field observations using purposive sampling technique on farmers who have community forest businesses based on their land area. The NPV, BCR, and IRR values are used to determine the feasibility of business in community forests at Strata I, II, and III. The results showed three strata of agroforestry community forest land area, namely Strata I having a land area of <0.51 ha, Strata II having a land area of 0.51– 0.74 ha, and Strata III having a land area of >0.74 ha. The managed community forest is a combination of mangosteen (Garcinia mangostana L), durian (Durio), Albizia/sengon (Paraserianthes falcataria), African wood (Maesopsis eminii Engl). The contribution of community forest income is 31% in Strata I, 18% in Strata II, and 57% in Strata III. The amounts of NPV for Strata I, II, and III were Rp 26,312,489, Rp 11,473,644, and Rp 86,609,451, respectively. BCR values for Strata I, II, and III are 2.12 each; 1.38; and 2.36. IRR values for Strata I, II, and III are 38%; 22%; and 36%.
Keyword: agroforestry, business feasibility, community forest, contribution

Judul: Financial Analysis of Land Use with Agroforestry in Cibeber II Village, Leuwiliang District, Bogor Regency
Abstrak: Pengelolaan pengusahaan hutan rakyat di Desa Cibeber II meliputi pengusahaan tanaman kayu mapun non kayu yang berasal dari hutan rakyat milik pribadi maupun tanah garapan yang dimanfaatkan untuk kesejahteraan dan kebutuhan sehari-hari masyarakat setempat. Tujuan dari penelitian ini memberikan informasi mengenai kelayakan usaha hutan rakyat dari sebagian pola tanam yang terdapat di hutan rakyat Cibeber II. Berdasarkan hasil analisis finansial dengan pola monokultur dan agroforestri layak untuk dikembangkan melalui tiga indikator yaitu NPV, BCR dan IRR. Dari hasil analisis tersebut usaha hutan rakyat dengan pola agroforestri sengon dengan delapan tanaman pengisi lebih menguntungkan dibandingan dengan pola agroforestri sengon dengan tiga tanaman pengisi dan agroforestri sengon, kayu afrika, meranti dan dua tanaman pengisi serta monokultur sengon dengan nilai NPV sebesar Rp478.903.719,00 BCR sebesar 29,15 dan IRR tidak terdefinisi (nilai selalu positif)., The management of community forest in Cibeber II Village includes the exploitation of both timber and non-timber plants originating from privately owned community forests and arable land which are used for the welfare and daily needs of the local community. The purpose of this study is to provide information about the financial feasibility of several cropping patterns found in the Cibeber II community forest. Based on the results of financial analysis, both monoculture and agroforestri patterns are feasible to be developed according to three indicators, namely NPV, BCR and IRR. From the results of the analysis, community forest business with sengon agroforestry pattern with eight filler plants is more profitable than the sengon agroforestry pattern with three filler plants and sengon agroforestri, African wood, meranti and two filler plants and sengon monoculture with an NPV are Rp478.903.719,00 BCR is 29,15 and IRR is undefined (value is always positive).
Keyword: Agroforestry, Cibeber II Village, Financial analysis, Private forests

Judul: Formulasi Hamiltonian untuk Menggambarkan Gerak Gelombang Soliter Dimensi Tiga di Permukaan Laut
Abstrak: Gelombang permukaan adalah gelombang yang terjadi perbedaan rapat massa antara air dan udara. Salah satu gelombang permukaan yang ditinjau adalah gelombang soliter. Formulasi gelombang soliter dilakukan dengan menggunakan formulasi Hamiltonian.
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