Judul: Forecasting of Economically Main Fish Catch Production in Indramayu
Abstrak: Jumlah produksi perikanan merupakan informasi penting dalam mengetahui kemampuan penyediaan perikanan dimasa yang akan datang. Ketersediaan ikan tidak menentu diperlukan sistem yang memprediksi kemampuan penyediaan ikan tersebut. Peramalan menjadi suatu kajian yang penting untuk memprediksi penyediaan stok. Indramayu merupakan salah satu daerah dengan jumlah produksi perikanan tertinggi di Jawa Barat. Penelitian ini bertujuan mendeskripsikan kondisi perikanan Indramayu secara umum, menentukan tiga ikan ekonomis di Indramayu, meramalkan tiga ikan ekonomis penting dengan menggunakan metode weight moving average dan eksponential smoothing dan menyarankan strategi peningkatan kinerja peramalan. Ikan tenggiri (Scomberomorus commerson), kembung (Rastreliger sp) dan kuniran (Upenus sulphureus) merupakan ikan ekonomis di Indramayu. Masing-masing ikan dilakukan perhitungan peramalan dengan metode weight moving average dan eksponential smoothing. Setiap metode dilakukan perhitungan uji kesalahan MAPE (Mean Absolute Percentage Error) dan MSE (Mean Square Error) untuk melihat nilai kesalahan hasil peramalan. Metode dengan nilai kesalahan terkecil ialah metode weight moving average ordo 4. Hasil estimasi jumlah produksi ikan tenggiri (Scomberomorus commerson) 22.402,87 ton mengalami penurunan dari tahun sebelumnya. Ikan kembung (Rastreliger sp) 8.825,52 ton mengalami peningkatan dari tahun sebelumnya. Ikan kuniran (Upenus sulphureus) 2.540,45 ton mengalami peningkatan dari tahun sebelumnya.
Keyword: Indramayu, rata-rata bergerak, pemulusan eksponensial, peramalan produksi ikan, Eksponential smoothing, fish volume production, Indramayu, weight moving average

Judul: Economic Analysis of Sustainable Management of Fisheries Effort in Indramayu Regency
Abstrak: As an archipelagic country, Indonesia has territorial water at 5,8 million km2 Method of this research are biological analysis, bio-economical model, economic interest analysis, economic intensity analysis, and strategic analysis with use analytical hierarchy process (AHP). Fish resources with potential and become main products of fishermen in Indramayu Regency Indramayu are manyung, tenggiri, peperek, kembung, and tongkol. The production of fifth fish species about 85,6 % from fish production total in territorial water of Indramayu Regency. Maximum stock capacities (MSY) of manyung, tenggiri, peperek, kembung, dan tongkol in territorial water of Indramayu Regency each are 1291,37 ton/year, 1120,70 ton/year, 4227,93 ton/year, 1135,76 ton/year, and 5343,58 ton/year. Maximum economic yield (MEY) of manyung, tenggiri, peperek, kembung, and tongkol in territorial water of Indramayu Regency each are Rp 16.471.401.174/tahun, Rp 31.745.619.591/tahun, Rp 54.907.433.923/tahun, Rp 9.911.840.550/tahun, and Rp 42.547.409.047/tahun. consisted about 17.504 islands and coastal line more 81.000 km with various of fish resource. According to DPK of Indramayu Regency (2010a), the production of sea fishery in Regency of Indramayu is stable at 2009 reaching 108.554,6 ton with value about Rp 1.383.687.650.000. That production must influence stock capacities of fish resources in fishing ground, so that its exploiting require to be controlled, inclusive maximum economic yield (MEY). The aim of the research to analyse stock capacities and maximum economic yield of fisheries resources, to analyse sustainability of fisheries effort, and to formulate the development strategic of sustainable economic based on fisheries effort in Indramayu Regency. Drift gillnet (JIH), set gillnet (JIT), payang, bottom long line, handline, dan shrimp gillnet (JK) can be laboured on an ongoing basis in Indramayu Regency. Economi interest of drift gillnet (JIH), set gillnet (JIT), payang, bottom long line, handline, dan shrimp gillnet (JK) each are Rp1.029.134.326, Rp 579.915.247, Rp 992.640.822, Rp 263.338.992, Rp 56.725.341, dan Rp 76.184.501. Return of return of drift gillnet (JIH), set gillnet (JIT), payang, bottom long line, handline, dan shrimp gillnet (JK) each are 42,01 %, 31,35 %, 56,72 %, 58,52 %, 66,74 %, dan 43,53 %. Development strategic of sustainable economic based on fisheries effort in Indramayu Regency from priority most important to less be important are ; (a) Repair of management of fisheries effort (RK = 0,255, II = 0,05), (b) Construction of human resources of fisheries sector (RK = 0,230, II = 0,05), (c) Development of capitalization cooperation (RK = 0,193, II = 0,05), (d) Development of scale small fisheries ( RK = 0,186, II = 0,05), and (e) Development of supporting units of fisheries effort (RK = 0,136, II = 0,05).
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Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell