Judul: Perangkat Lunak Sistem Informasi Penentuan Spesies Ekonomis Penting Sumberdaya Perikanan Laut Indonesia Berdasarkan Model Produksi Surplus
Abstrak: Indonesia memiliki kekayaan sumberdaya hayati laut yang beragam dan berlimpah yang belum dimanfaatkan secara optimal. Sumberdaya hayati laut mempunyai kemampuan berkembangbiak, sehingga sumberdaya ini disebut juga sumberdaya dapat pulih (rewenable source). Walaupun demikian , sumberdaya ini tidak berarti tidak terbatas, karena pertumbuhannya sangat dipengaruhi oleg daya dukung lingkungannya. Oleh karena itu selain harus memperhatikan potensi lestarinya juga harus mempertimbangkan jenis ikan yang akan dieksploitasi yang dapat memberikan keuntungan yang lebih besar.
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Judul: Perangkat Lunak Sistem lnformasi Pengkajian Stok Sumber Daya lkan Laut di Perairan Indonesia
Abstrak: Sumber daya ikan laut di perairan lndonesia sangat banyak jumlahnya dan merupakan sumber daya yang dapat pulih tapi bukan berarti sumber daya ini tidak dapat habis. Sumber daya ini akan mengalami kelangkaan jika pemanfaatannya tidak memperhatikan potensi lestari sumber daya yang ada dan daya dukung alam. Potesi lestari sumber daya perlu diketahui untuk menghindari terjadinya penangkapan berlebih yang akan mengakibatkan ikan tidak mampu melakukan regenerasi dan mengalami kelangkaan.
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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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