Judul: Suatu Analisa Optimasi Unit-Unit Penangkapan Ikan di Selayar, Sulawesi Selatan
Abstrak: B University Tujuan penelitian ini adalah untuk: (1) Mengetahui ke- adaan umum perikanan laut Kabupaten Selayar, (2) Menganalisa jenis-jenis alat penangkapan ikan, untuk menentukan kombina- si alat mana yang memberikan penerimaan maksimum, (3) Meren- canakan alternatif dan jumlah alat yang dapat dikembangkan di perairan Selayar. Metode yang digunakan dalam penelitian ini adalah me- tode survai. Amalisa data dengan menggunakan "linear prog- ramming" dengan metode "simplex". Amalisa pengembangan di- lakukan berdasarkan pendekatan produksi optimum, biaya investasi dan operasi serta potensi lestari...
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Judul: Optimasi Perikanan Layang di Kabupaten Selayar Propinsi Sulawesi Selatan
Abstrak: Scads is a potential fishing resources in Selayar regency. The production of scads fishery landed in Selayar regency was 31.5 ton in 2006. The objectives of the research are 1) to determine priority of catching technology development for scads fish in Selayar district; 2) optimum allocation of scads fish catching unit in Selayar district; and 3) to determine development strategy of scads fishery. Survey method and direct observation was used in research methodology. Some analysis used in this research were 1) Scoring method, to determine the best of scads fishing technology pursuant to biological, tehnical, sosial, economical aspects and environmentally friendly; 2) LINDO analysis was used to determine optimum allocation in scads fish catching unit; and 3) SWOT analysis was used to determine development strategy of scads fishery. The result of this research is that the scads purse seine fishing technology become the most effective, efficient and suistainable. Optimum number allocation of scads fish catching unit used in Selayar district waters is 61 units of purse seine. The development strategy of scads fishery at Selayar district are (1) Optimizing scads fishery; (2) Operating economical oil consumption fishing unit; (3) Capital effort with low interest are available; and (4) Improvement of stakeholders and public function in fishing gear operation controlling.
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Judul: Enhancement of photon absorbtion on BaxSr1-xTiO3 thin films semiconductor using photonic crystals.
Abstrak: In this research, has been conducted BaxSr1-xTiO3 (BST) thin films manufacturing for mole fraction x = 0.25, 0.35, 0.45, and 0.55; and concentration of 1 molar using chemical solution depositon (CSD) method. The materials, which are used in this research, are barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%], titanium isopropoxide [Ti(C12O4H28), 97.999%], gallium trioxide [Ga2O3], 2-methoxyethanol [H3COOCH2CH2OH, 99%] and 1 x 1 cm of transparent conductive oxide (TCO) glass as substrate. Two BST thin films are made that for BST thin films which are doped by 10% galium (BGST) as p-type layer and pure BST solution as n-type. BST solution is made by reacting barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%] and titanium isopropoxide [Ti(C12O4H28)] into 2-methoxyethanol solvent [H3COOCH2CH2OH, 99%] in accordance with mass gram for each x value. While, BGST solution is made in the same way as BST solution, plus adding gallium at 10% of the mass of BST. Once all materials are reacted, then vibrated using ultrasonic for 90 minutes, and followed by coating BGST / BST on the TCO substrate. Once the layer is formed, then annealed for 15 hours at temperature of 500 °C with increasing rate of 1.67 oC/minute. Characterizations of BST thin films with or without photonic crystals include the absorbance and transmittance in the visible light spectrum, as well as the electrical photoconductivity characterizations. From BST thin films without photonic crystals indicate that our thin films have light absorption area on almost the entire range of the visible light spectrum even to the infrared range with absorption value over than 67.6%, in addition, it can be seen that the maximum absorbance of BST thin films for all mole fractions lie in blue to green light spectrum region, 457 nm ≤ λ ≤ 570 nm and the minimum in yellow to red light spectrum region, 570 nm ≤ λ ≤ 678 nm. The largest absorbance is found at x = 0.25 with average absorbance value of 92.04% and maximum and minimum absorbance peaks at wavelength of 500.89 and 657.72 nm, respectively. At x = 0.35, average absorbance value decreased to 83.55% with maximum and minimum peaks at 505.73 and 613.68 nm, respectively. Then increased to 91.16% at x = 0.45 with maximum and minimum peaks at 506.04 and 618.56 nm, respectively. At x = 0.55, average absorbance value decreased to 80.12% with maximum and minimum peaks at 507.85 and 608.79 nm, respectively. Moreover, it can be seen that the addition of barium mole fraction leads to wider maximum absorbance or minimum transmittance peaks and narrower minimum absorbance or maximum transmittance peaks in the same range of the green and blue & red light spectrums, respectively. BST thin films with photonic crystals show increasing in absorption for all x values in the range of 3.04 into 13.33%. At x = 0.25, average absorbance percentage increased 3.96% from 92.4 into 95.68%, for x = 0.35 average percentage increased 7.07% into 89.45 from 83.55%. Furthermore, average absorbance of BST thin films at x = 0.45 increased 3.04% from 91.16 into 93.93% and x = 0.55 has
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