Judul: Analisis Pendapatan Usahatani Sayuran Organik pada Yayasan Bina Sarana Bakti Kecamatan Cisarua Kabupaten Bogor
Abstrak: The high demand of organic vegetables and government’s program concerned in ‘Go Organic’ is an opportunity for the producers to develop organic vegetables in Indonesia, whereas Yayasan Bina Sarana Bakti (YBSB) is one of them. Until present, YBSB is not able to fulfill the consumer’s demand of certain organic vegetables, such as carrot, green spinach, caisin, cos lettuce, and broccoli; therefore YBSB plan to increase its bussiness scale to increase the production. YBSB has not been able to calculate the income levels of those vegetables, which is needed to analyze whether the bussiness is feasible to increase or not. Hence the purpose of this research is to analyze the feasibility of YBSB’s plan to increase its bussiness scale through farm income and R-C ratio analysis. The results of this research concluded that the plan to increase the bussiness scale of carrot, green spinach, and cos lettuce is feasible to run because they are profitable, meanwhile YBSB has to consider the plan to increase the bussiness scale of caisin and broccoli because they are less profitable.
Keyword: organic vegetables, Farm income

Judul: Analisis Pendapatan Usahatani Wortel Organik dan Anorganik di Kecamatan Cisarua, Kabupaten Bogor, Jawa Barat
Abstrak: Dewasa ini masyarakat semakin peduli terhadap kemananan dan kesehatan pangan serta bahaya yang ditimbulkan oleh penggunaan obat-obatan kimia dalam pertanian. Kini masyarakat mulai beralih kepada gaya hidup sehat atau “back to nature” yang mengutamakan pangan sehat tanpa kandungan obat-obatan yang dapat diperoleh dari produk pertanian organik. Preferensi konsumen yang seperti ini menyebabkan peningkatan permintaan terhadap produk organik. Salah satu sayuran yang dapat dikembangkan menggunakan sistem pertanian organik adalah wortel. Penelitian ini bertujuan untuk mengetahui tingkat produktivitas, pendapatan, serta tingkat efisiensi pada usahatani wortel organik dan anorganik di Kecamatan Cisarua. Hasil penelitian menunjukkan bahwa wortel organik memiliki tingkat produktivitas yang lebih rendah dibandingkan wortel anorganik. Pendapatan atas biaya tunai dan biaya total petani wortel organik lebih besar daripada petani wortel anorganik. Nilai R/C pada kedua usahatani ini memiliki nilai yang kurang dari satu yang menunjukkan kedua usahatani belum berjalan secara efisien.
Keyword: organic farm, productivity, R/C, revenue

Judul: Approximation of the Median of Poisson Distribution Using the Relation of Poisson-Gamma Distribution
Abstrak: A major drawback of median is that median cannot usually be defined in closed form, even in the cases where their distribution functions are known. This study gives an approximation of the closed form for the median of the Poisson distribution by using the relation of Poisson-Gamma distribution. The approximation uses elementary techniques based on the monotonicity of certain sequences involving tail probabilities of the Poisson distribution and the Central Limit Theorem. Furthermore, a closed form expression for the mean absolute deviation 􀜧|􀜰􀰒 􀵆 􀜯􀝁􀝀􁈺􀜰􀰒􁈻| is also studied. The median is relevant because of the fact that it minimizes the mean absolute deviation of a Poisson random variable (􀜰􀰒􁈻 by considering median as central tendency.
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