Judul: Analisis dampak perdagangan ikan karang hidup konsumsi life reef fish food terhadap sumberdaya perikanan: studi kasus di Provinsi Sulawesi Selatan
Abstrak: Penelitian ini bertujuan untuk mengetahui dampak perdagangan ikan karang hidup konsumsi (LRFF) terhadap sumberdaya perikanan di Indonesia. Seperti diketahui bahwa LRFF di Indonesia telah mengalami eksploitasi berlebih akibat praktek penangkapan yang tidak berkelanjutan dan tingginya permintaan di pasar internasional. Penelitian ini menggunakan pendekatan analisis bioekonomi dan analisis simulasi. Pendekatan analisis bioekonomi bertujuan untuk memperoleh tingkat optimal eksploitasi LRFF dan pendekatan analisis simulasi bertujuan untuk memprediksi dampak perdagangan LRFF. Hasil penelitian menunjukkan harga mempunyai dampak terhadap tingkat eksploitasi LRFF. Harga yang tinggi akan meningkatkan upaya penangkapan dan mengurangi suplai perikanan di perdagangan dalam jangka panjang,
Keyword: Effort, Impact analysis, Life reff fish, Trade

Judul: Politik Seafood Savers Ikan Konsumsi Karang Hidup (Studi Kasus di Kabupaten Wakatobi, Sulawesi Tenggara)
Abstrak: Live reef food fish (LRFF) which is a commodity found in Wakatobi has emerged in the era of the 1992’s up to present. The commodities are an expansion phenomenon of a global fishery which is very dynamic. The dynamic trading on the LRFF has affected some problems which relate to an integrated factor linking to social, economy, ecology and policy making factors. These transboundary trading have involved several actors to engage into a global network live reef food fish commodity found from fisherman-middleman(coordinator)-exporters and consumers. The commodities have traded to be based on the assumption of the common property resources due to the open access which is embedded on the LRFF. The practices of the type of trading has effected to the overfishing that has lead to the decline of a fish stock. Moreover, this practice has impacted to the change of the structures of social production, the trading network and market policies. Seafood Savers has a respond to the market failure due to the degradation of the LRFF commodities. Seafood Savers program is a market instrument for LRFF management which is a sustainability orientation. The program of Seafood Savers is an important key to successful implementation of the responsibility fisheries practice on the LRFF in Wakatobi as being in a pilot project supervised by WWF Indonesia. This study used a qualitative approach with constructivism paradigm. This research also was conducted in the interaction with the political ecology and the intuitional analysis to contribute to the study of a sustainability policy on the LRFF. Results of this study indicate that there has been no significant change occurred in the use of the commoditization of live reef fish food. Politics of Seafood Savers have not been able to answer the problem of fishermen on the field. Seafood Savers comes as a power tool market is trying to shed the patron-client ties (Coordinator-fisherman) and tried to lift Seafood Savers policy to accommodate into the form of legal partnership working arrangements between market, state and community.
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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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