Judul: Analisis Kelayakan Ekonomi dan Keberlanjutan Program Urban Farming di DKI Jakarta
Abstrak: Urban farming DKI Jakarta merupakan program yang diinisiasi oleh pemerintah provinsi dengan tujuan utama untuk meningkatkan kualitas lingkungan hidup melalui luasan area tutupan hijau produktif yang sekaligus untuk mendukung pangan lokal di wilayah DKI Jakarta. Pelaksanaan program urban farming saat ini masih belum banyak dilakukan oleh masyarakat di DKI Jakarta bahkan banyak wilayah yang awalnya terlibat dalam urban farming, saat ini sudah tidak aktif menjalankan program tersebut. Oleh karena itu, penelitian ini bertujuan untuk: (1) Menganalisis persepsi multistakeholder terhadap adanya program urban farming di DKI Jakarta; (2) Mengestimasi kelayakan finansial dan ekonomi program urban farming di DKI Jakarta; dan (3) Menganalisis keberlanjutan program urban farming di DKI Jakarta. Metode analisis yang digunakan dalam penelitian ini adalah analisis deskriptif dengan skala likert, analisis kelayakan finansial dan ekonomi, dan analisis keberlanjutan menggunakan pendekatan MDS-Rapfish. Hasil penelitian menunjukkan bahwa persepsi masyarakat terhadap program urban farming cenderung sangat baik terutama pada aspek keindahan dengan nilai skala likert 3,74 atau sangat setuju. Sebanyak 91,67% urban farming DKI Jakarta menunjukkan NPV dan BCR layak secara ekonomi, sedangkan secara finansial 58,34% urban farming memiliki NPV dan BCR yang layak. Status keberlanjutan program urban farming memiliki nilai indeks 58,21 artinya program urban farming DKI Jakarta memiliki status cukup berkelanjutan.
Keyword: Cost Benefit Analysis (CBA), Multi Dimensional Scaling (MDS), Urban Agriculture, Rapfish

Judul: Model kebijakan pengembangan pertanian perkotaan berkelanjutan (studi kasus: Wilayah DKI Jakarta)
Abstrak: Revitalization of agriculture is basically putting back the importance of agriculture in proportion and urban contexts. Considering the condition of agriculture in urban areas, especially areas of Jakarta and linkages with various environmental problems. It is expected that development of agriculture would not be sustainable. So it needs design action and formulation of comprehensive policy for sustainable development of urban agriculture. The study was aimed to analyze the sustainability of urban agriculture, to analyze the critical factors affecting the sustainability and policy of development urban agriculture. Analysis techniques used were MDS (multi-dimensional scaling) technique Rap-Ur-Agri (Rapid Appraisal for Urban Agriculture), an important factor with factor analysis level (leverage factor) and determination of sustainable agricultural development policy scenarios with a prospective analysis. Sustainability status of agricultural development on the condition of existing urban areas show an index value of 48.70% or less sustainable. Key factors for sustainability of urban agriculture are 4 (four) key factors, and attributes of stakeholders' needs are 4 (four) key factors. The light factors have been merged, so that it acquired six key factors that affect the development of urban agriculture systems. Scenarios of agricultural development policy of sustainable urban areas of Jakarta conducted with an integrative approach by improving the performance of atribute and six key factors: (1) yard size, (2) the development of commodity and environmentaly sound technology, (3) extension and agricultural institutions, (4) availability of urban land space, (5) cooperation among stakeholders, and (6) provision of agricultural incentives. MDS simulation results show that the pesimistic scenario with low improvement result sustainability index value 49.06%, moderate improvement scenario result sustainability index value 63.65% and optimistic scenario with the maximum improvement condition result sustainability index value at 76.85%. Development of policy direction consist of expansion of urban agriculture land and farm space, yards and fields/orchards, the development of environmentally friendly commodities and technology, social and institutional development of agriculture in the implementation strategy outlined.
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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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