Judul: Analisis Ekonomi Pemanfaatan Fiber dan Cangkang Kelapa Sawit Menjadi Energi Listrik (Studi Kasus : PT. Bahana Karya Semesta, Kab. Sarolangun, Jambi)
Abstrak: Research was conducted to determine the energy generated from the utilization of palm oil soild waste in PT. Bahana Karya Semesta, Sarolangun, Jambi Province. Research aimed to determine the amount of fiber and shell factor produced, the amount of fiber and shells are used as fuel for boilers producing electrical energy, investment cost, and efficiency of energy costs. This research uses a cost benefit analysis (financial viability). The electrical energy used by the plant of solid waste palm oil is the amount of energy produced multiplied by the length of time the plant is operating within 1 day which is an average of 13.6 hours. Electricity needs of the plant is 11.084 kWh of electricity generated and the amount of fiber and shell as fuel boiler is 9.033 KWh. Based on the calculations, the value of NPV>0 that is Rp115.860.317.059. Net B/C>1 is 2,5, IRR>12% interest rate is 44% and payback period of 3,9 years. These results demonstrate the utilization of oil palm fiber and shell into electrical energy is feasible. Efficiency of energy costs of utilization of oil palm fiber and shell is Rp902.250.625/month, and efficient use of energy obtained for 81,5%
Keyword: Renewble Energy., Palm Oil, Fiber and shells, Electric Energy, Cost Benefit Analysis

Judul: Analisis Ekonomi Pabrik Kelapa Sawit (PKS) dalam Pemanfaatan Limbah Kelapa Sawit Sebagai Alternatif Energi Listrik (Studi Kasus : PKS Kertajaya, PTP Nusantara VIII, Banten)
Abstrak: Sektor perkebunan di Indonesia berperan menjadi sektor terdepan dalam memajukan kesejahteraan dan perekonomian negara. Salah satunya adalah komoditi kelapa sawit yang merupakan tanaman penghasil minyak kelapa sawit atau yang dikenal sebagai CPO (crude palm oil) dan kernel. Pabrik kelapa sawit menghasilkan limbah yang dapat dimanfaatkan kembali sebagai energi alternatif. Limbah padat berupa cangkang dan serabut merupakan potensi sumber energi terbaharukan khususnya sebagai bahan bakar power plant pada Pabrik Kelapa Sawit (PKS). Berdasarkan hasil analisis ekonomi, pengolahan kelapa sawit PKS Kertajaya pada tahun 1985-2019 dengan tingkat suku bunga sebesar 15%, menunjukan nilai NPV sebesar Rp 1.474.574.876.669 nilai Net B/C sebesar 1,66, IRR sebesar 22,20% dan payback period selama 9 tahun 7 bulan, sehingga layak dijalankan. Hasil analisis efektifitas biaya energi alternatif, memperlihatkan bahwa PKS Kertajaya dapat menghemat biaya sebesar Rp 15.071.506.562 per tahun untuk keperluan listrik dari bahan bakar solar yang diganti dengan menggunakan kombinasi solar, cangkang dan serabut.
Keyword: economic analysis, palm oil, waste material, electricity.

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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