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: Estimasi Nilai Kerugian Ekonomi akibat Pencemaran Air di Waduk Cirata, Wilayah Kabupaten Cianjur, Provinsi Jawa Barat
Abstrak: Cirata Reservoir is one of cascade reservoir which was built by dammed Citarum River’s flow for some purposes, such as hydropower plant, fisheries, and floating cage aquaculture. Cirata Its water quality is declining due to water pollution. This pollution causes economic losses for the users of Cirata Reservoir, those are: floating cage aquaculture farmers, fishermen, and PT. PJB UP Cirata as the management of Cirata hydropower plant. This research aims to identify the respondents’ perceptions about the water pollution use descriptive analysis and to estimate the economic losses which are caused by water pollution in Cirata Reservoir Cianjur Regency in 2013 use economic loss approach and benefit transfer method. Commonly, the respondents understand about the water pollution in reservoir and suffered by it. Based on data analysis obtained that economic loss estimation of floating cage aquaculture is IDR 427,581,110,250.00 (the biggest loss), economic loss estimation of fisheries is IDR 1,176,696,421.00, and economic loss estimation of hydropower plant is IDR 198,418,167,672.67. Therefore, total economic loss estimation due to water pollution in Cirata Reservoir Cianjur Regency in 2013 is IDR 628,175,974,343.67.
Keyword: water pollution., resource damage assessment, economic loss, Cirata Reservoir

Judul: Grup Abelian Berhingga dari Barisan Genomik DNA  (Deoxyribonucleic Acid)
Abstrak: Informasi genetik yang memprogram semua aktivitas sel terdapat dalam bentuk kode di dalam molekul DNA. Grup kodon dari basa nukleotida DNA {A, C, G, U} tidak dapat merepresentasikan daerah non kode dalam genom yang disebabkan oleh mutasi penghapusan serta penyisipan pada barisan genomik DNA. Dalam karya ilmiah ini grup kodon diperluas dengan menambahkan huruf O untuk menandakan mutasi penghapusan atau penyisipan pada kodon untuk semua triplet diperluas 1 2 3 X X X dengan i X Î{O, A, C, G, U} dari barisan genomik DNA. Grup kodon yang diperluas isomorfik dengan grup bilangan bulat modulo 125. Grup abelian berhingga dari barisan genomik DNA yang dibentuk dari himpunan seluruh pasangan terurut triplet ekson dan intron pada untai DNA isomorfik dengan grup jumlah langsung bilangan bulat modulo 64 dan 125. Kemudian grup abelian berhingga tersebut direpresentasikan sebagai grup jumlah langsung 2-grup dan 5-grup homosiklik. Bagian barisan genomik DNA tanpa penyisipan membangun blok gen yang direpresentasikan oleh 2-grup homosiklik, sedangkan bagian barisan genomik DNA yang dipengaruhi oleh penyisipan direpresentasikan oleh 5-grup homosiklik.
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