Judul: Tingkat Adopsi Teknologi Budidaya Sayuran Organik oleh Petani Mitra ADS-UF IPB Serta Faktor-Faktor yang Mempengaruhinya
Abstrak: Vegetables are one of the horticultural commodity that has great potential to be developed in Indonesia. Nowadays, it consumption trend in Indonesia leads to organic vegetables. This movement caused by public awareness about the dangers of using chemical product for health and environment. The farmers who conducted organic farming must adopt various organic cultivating aspects in order to reach organic harvest. Agribusiness Development Station (ADS) is an institution that encourage its partnered farmers to cultivate organic vegetables by adopting cultivating technologies formed in SOP. The purpose of the research is to identify characteristics of farmers, to analyze farmer’s adoption rate of the technology of organic vegetables cultivation, and to analyze factors that influence adoption. The result showed that, farmer’s adoption rate is high, 57.14 percent of farmer adopted the technology as recommended by SOP. Characteristic factors that give real effect based on the p-value in the level of α = 0.1 with logistic regression analysis is the level of education and farming experience.
Keyword: organic vegetable, farmer’s characteristics, cultivation, adoption

Judul: Evaluasi dan Strategi Peningkatan Kinerja Pemasok Sayuran Organik di Agribusiness Development Station IPB
Abstrak: Peran Agribusiness Development Station (ADS) Institut Pertanian Bogor (IPB) sangat penting, terutama dalam pemenuhan kebutuhan konsumsi sayuran organik di Indonesia. Namun, pemenuhan keseluruhan permintaan pasar tidak bisa terpenuhi. Sayuran organik dihasilkan dari kebun milik ADS IPB dan menjalin kemitraan dengan pemasok yaitu petani binaan, sayuran organik yang diproduksi sendiri oleh ADS IPB hanya 30% dan sisanya yakni 70% terpenuhi dari produksi pemasok. Peran pemasok penting untuk memenuhi permintaan sayuran organik di ADS IPB. Maka perlu adanya penelitian mengenai evaluasi dan strategi peningkatan kinerja pemasok di ADS IPB. Tujuan Penelitian ini 1) Menganalisis indikator penilaian kinerja pemasok sayuran organik di Agribusiness Development Station IPB, 2) Menganalisis pemasok terbaik sayuran organik di Agribusiness Development Station IPB, 3) Menganalisis strategi peningkatan pasokan sayuran organik di Agribusiness Development Station IPB. Penelitian ini dilakukan dengan cara wawancara kepada pakar yang berjumlah tiga orang yaitu manajer produksi, manajer program dan pendampingan, dan kepala bagian pendampingan petani. Tahapan pengolahan dan analisis data dalam penelitian ini menggunakan metode analisis ABC, Analytical Hierarchy Process (AHP), dan analisis perumusan strategi yang terdiri dari analisis faktor internal dan eksternal, analisis matriks internal eksternal, analisis Strength, Weaknes, Opportunity, and Threats (SWOT). Hasil penelitian diperoleh faktor penilaian pemasok sebagai berikut. Pada faktor Quality (0.403) memiliki dua sub faktor dengan nilai bobot kepentingan sama tinggi yakni kesesuaian pasokan produk dengan standar mutu yang ditetapkan (0.202) dan kemampuan memberikan pasokan produk dengan mutu konsisten (0,202). Pada faktor Delivery (0.292), sub faktor tertinggi yaitu ketepatan jumlah pengiriman sesuai perjanjian kontrak mendapat nilai bobot (0.140). Pada faktor Responsiveness (0.305) didapat sub faktor tertinggi yaitu kemampuan memberikan informasi dengan jelas dengan nilai bobot (0,131). Dari hasil penilaian pemasok sayuran organik di ADS IPB didapat peringkat pemasok dengan bobot tertinggi menurut model AHP secara berurutan adalah Fauzi (0.249), Endang (0.217), Ujang (0.214), Leuwi Liang Grup (0.197), dan Seno (0.123). Hasil analisis strategi didapat alternatif strategi pengembangan jaringan pemasok mendapat tingkat prioritas tertinggi dengan nilai bobot 0.303.
Keyword: AHP, Evaluasi Pemasok, Rantai Pasok

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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