Judul: Estimasi Nilai Willingness to Pay dan Identifikasi Perilaku Ekonomi Petani Ikan Keramba Jaring Apung di Waduk Cirata
Abstrak: Cirata Reservoir is one of the major water reservoir in West Java and also function as a hydro power plants. The exploitation of the reservoir brings its own effect for the local economy and also its environment. This research aim for the estimation of the willingness-to-pay value of the floating cage fish-farmer was carried using CVM method, identifies the factors that determine the fish-farmer willingness to pay using logistic regression method, and analyze the economic behavior of the reservoir’s fish-farmer with perception and motive approach method for the willingness-to-pay by the floating cage fish-farmer of the Cirata Reservoir using descriptical analytic method. Based on the research, for the environment condition of the Cirata Reservoir in Cianjur Zone, the farmers also feel its pollution result and realize that the pollution was contributed by the establishment of the floating cage itself. The fish-farmers also experience changes in its fish productivity, resulting in harvest decrease, longer production period, increase of fish death rate, decrease in harvest quality, with the tendency of static diet. The EWTP value of the Cirata Reservoir result is Rp30.321,22. The significant factor that determine the willingness to pay of the farmer for the water quality improvement of the Cirata Reservoir was influenced based on the age, family members, profession duration, income, number of floating cage unit owned, and the bid value offered. The motive that derives the farmer’s willingness to pay is to increase the reservoir’s water quality, and also to increase the fish productivity of the floating cage Fish-Farmers.
Keyword: Willingness to Pay., Floating cage, Economic behavior, Cirata Reservoir

Judul: Dampak Ekonomi Pencemaran Air Terhadap Perikanan Budidaya Sistem Keramba Jaring Apung (KJA) di Waduk Cirata, Kabupaten Bandung Barat
Abstrak: This research aims to analyze the economic impact of water pollution on aquaculture in Cirata Reservoir. Impact of water pollution in Cirata is declining fish productivity of floating cage aquaculture. Based on the data analysis there are 8 factors that could explain the presence of contamination in the last 5 years which has exceeded the threshold of category C (Pb, Zn, Cl2, H2S, DO, Cu, Cd, and Nitrite). Further multiple regression analysis of water quality impact on the productivity of floating cage. Showed that, only variable DO levels is statistically significant effect on productivity of floating cage. Value of economic loss is calculated based declining productivity amounting to Rp 985.485.382.718 in 2011. The results of the calculation of economic loss in the last 5 years amounting to Rp 4.219.702.954.280. There are five policys identified which were restrictions on the amount of floating cage with progressive taxation, tax collection at each floating cage aquaculture for environmental improvement costs (Rp 10/kg crops), installation of waste filter, biological cleaners, and withdrawals floating cage which are not enviromental friendly (floating made of styrofoam) and unused. AHP analysis results that the first policy priority is the installation of waste filter policy.
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Judul: Penyusunan Overlap Graph menggunakan Suffix Tree pada DNA Sequence
Abstrak: The DNA sequence assembly is very important in genome analysis. This step aims to reconstruct contigous DNA fragment (contigs) from short fragment by concatenating fragments based on the overlap region among them. This method employs overlap graph for solving the problems. In this graph, nodes represent fragments and edges represent overlap. This research developed a software for constructing overlap graph using suffix tree. The evaluation was conducted by measuring the number of nodes, number of edges, and the execution time in many values of minimum overlap. The minimum overlap is defined as the minimum length of substring which is considered as the overlap region between two fragments. The evaluation results showed that the number of nodes, the number of edges, and the execution time were increased with the decreasing of the minimum overlap value.
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