Judul: Model ekonometrika perikanan Indonesia : analisis simulasi kebijakan pada era liberalisasi perdagangan
Abstrak: Dalam Pembangunan Jangka Panjang Kedua, Sub Sektor Perikanan dicanangkan mampu sebagai surnber pertumbuhan baru melalui peningkatan ekspor non migas, peningkatan produk domestik bruto sektor pertanian dan perluasan kesernpatan kerja. Tetapi untuk merealisasi rnaksud tersebut bukan suatu pekerjaan yang mudah karena usaha perikanan saat ini didominasi oleh usaha skala kecil dengan teknologi yang sederhana dan hasilnya sebagian besar untuk pasar setempat, dan beberapa daerah telah melampaui potensi sumber daya lestari dan daerah lain yang sumbernya masih tersedia menghadapi kendala terbatasnya infrastruktur.
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Judul: Model embedded dinamik ekonomi interaksi perikanan-pencemaran
Abstrak: Penelitian ini menghitung nilai depresiasi dan kerugian ekonomi sumberdaya perikanan yang hilang sebagai akibat aktivitas produksi (tangkap) dan non produksi (pencemaran). Secara umum penelitian ini bertujuan untuk membangun model embedded dinamik ekonomi interaksi perikanan-pencemaran, serta menilai manfaat sumberdaya darn perikanan sebagai akibat kegiatan produksi dan non produksi, serta dampaknya terbadap kesejahteraan. Analisis interaksi perikanan-pencemaran dilakukan melalui model Embedded, dimana faktor non produksi (pencemaran), 'dititipkankan' kedalam model pertumbuhan ikan. Dengan menggunakan pendekatan modifikasi dari fungsi pertumbuhan surplus produksi dan modifikasi dari Pontryagin Maximum Principle, studi ini menghitung nilai kehilangan akibat pencemaran terhadap produksi lestari dan biomass, This research was motivated by a never ending question which arises in fisheries management in Indonesia. Sources after sources tell us that Indonesia is endowed with rich ocean resources especially fisheries which could have generated much potential benefits which in turn could have been enjoyed by all stakeholders involved in fishing activities. However, ironically, this economic potential benefits were not mirrored in the well-being of fishing community. The fact that proverty in fishing community is still persisted is an evidence of such as paradox.
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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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