Judul: Bussiness Development of Used Plastics processing at PT. Mitra Bangun Cemerlang, Tangerang
Abstrak: One of the factors that causes damage to the environment and becomes a major problem in Indonesia is plastic waste. Plastic bags have become a dangerous waste and a serious problem for environmental sustainability. Plastic garbage becomes a significant pollutant because it is not biodegradable. The objectives of this study were (1) to evaluate and analyze internal and external conditions of PT Mitra Bangun Cemerlang (MBC), (2) to analyze the feasibility and potential of the business development of used plastic processing at PT. MBC, and (3) to formulate strategies of used plastic processing at PT. MBC. The study was conducted at PT MBC in Tangerang, West Java, from May to September 2010. The descriptive and analytical methods were used in this case study. The quantitative and descriptive qualitative methods were used in processing and analyzing the data. The quantitative analysis was carried out by using the method of feasible investment through the NPV, IRR and PBP. The descriptive qualitative analysis was carried out by using the matrix of IFE, EFE, IE, SWOT and QSPM. The results of the identification and evaluation of the internal strategy showed five key factors of the strengths and weaknesses of the company, as well as five factors of the external opportunities and threats of the company. The feasibility analysis of the financial aspect was conducted based on data of 2007-2009. The discount rate used was 14,25%, which was the bank rate at the time of the study. The PBP value was 3,12 years, the resulting NPV was Rp 23.900,52 million, and the IRR value was 54,26%. Analysis by IFE and EFE matrix show that the total value of IFE was 2,583 and EFE was 2,972. With the IE matrix analysis, PT MBC’s position was in quadrant V. The next step was the formulation of strategy using the SWOT matrix. The alternative strategy generated could be categorized into three major groups, namely management, marketing and production. Based on the QSP matrix analysis, the most interesting strategy to be implemented in the production strategy, were increasing production capability by applying modern technology and reducing environmental pollution level.
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Judul: Analisis Manfaat Ekonomi dan Keberlanjutan Pengelolaan Sampah Plastik (Studi kasus: PT. Majestik Buana Group di Kota Bekasi).
Abstrak: Kota Bekasi mengalami peningkatan penduduk dan menimbulkan berbagai permasalahan lingkungan, diantaranya sampah plastik. Permasalahan lingkungan sampah plastik dapat diatasi dengan prinsip 3R (Reduce, Reuse, Recycle) yang dijadikan sebagai salah satu alternatif oleh masyarakat untuk pengelolaan sampah, dan dalam pengelolaannya dapat berdampak pada banyak aspek diantaranya aspek ekonomi dan sosial. Salah satu yang menerapkan prinsip 3R adalah PT. Majestik Buana Group (MBG) yang terletak di Kota Bekasi. PT.MBG bergerak di bidang pengelolaan sampah plastik yang mengurangi serta mendaur ulang sampah plastik, dan berdampak secara ekonomi pada masyarakat sekitar berupa penerimaan tenaga kerja yang dapat mengurangi tingkat pengangguran serta pemberdayaan masyarakat sekitar. Penelitian bertujuan untuk mengkaji dan mengidentifikasi pola kemitraan, persepsi masyarakat terhadap pengelolaan plastik, menganalisis manfaat ekonomi dari PT.MBG, serta Analisis berkelanjutan PT.MBG. Metode penelitian menggunakan metode analisis pendapatan, skala likert dan analisis Rapfish. Hasil penelitian menunjukkan Pola kemitraan yang digunakan PT.MBG ini adalah pola inti-plasma, yaitu adanya hubungan antara PT.MBG sebagai inti-plasma dengan mitra sebagai plasma. PT.MBG memberikan manfaat yang baik terhadap aspek ekonomi, lingkungan dan sosial. Pendapatan PT.MBG sebesar Rp. 1.631.790.000 pada tahun 2018. Status keberlanjutan PT.MBG adalah cukup berkelanjutan secara ekologi, dan berkelanjutan secara ekonomi, sosial, serta hukum kelembagaan dengan nilai sebesar 80.95 artinya PT.MBG memiliki status berkelanjutan.
Keyword: Kemitraan, Pengelolaan Persepsi, Prinsip 3R, Rapfish

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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