Judul: The impact of trade liberalization and climate change in agriculture commodities in various countries on macro and economic sector of Indonesia: general equilibrium economic model approach
Abstrak: Selama tiga dekade terakhir isu perubahan iklim (climate change) sudah menjadi salah satu isu utama pada setiap pertemuan internasional. Laporan Intergovernmental Panel on Climate Change (IPCC) 2007 memprediksikan peningkatan suhu bumi rata-rata 2,8 0C selama abad 21 disebabkan oleh meningkatnya konsentrasi CO2 Berdasarkan beberapa hasil studi menunjukkan bahwa perubahan iklim menyebabkan perubahan produktivitas di sektor pertanian, kehutanan, perikanan dan tenaga kerja yang pada akhirnya membawa konsekuensi kepada kondisi ekonomi maupun sosial dalam jangka panjang (Zhai Fan et al, 2009). Khusus di sektor pertanian perubahan cuaca dan iklim yang sangat mempengaruhi produktivitas antara lain perubahan suhu dan pola curah hujan, maupun dampak resultan dari ketersediaan air, pestisida, penyakit dan terjadinya cuaca yang ekstrim (Zhai Fan et al, 2009). Sektor pertanian di beberapa negara berkembang seperti India, Brazil, Afrika Selatan, dan Indonesia diperkirakan juga akan dipengaruhi oleh terjadinya perubahan iklim tersebut. . Selama 140 tahun terakhir (1840-2005), suhu global terus meningkat, demikian pula 100 tahun ke depan rata-rata suhu global diperkirakan terus meningkat.
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Judul: Impact of Climate Change on the Export of Palm Oil, Coffee Beans, and Cocoa Beans
Abstrak: Perubahan iklim diyakini berdampak pada perekonomian suatu negara. Produksi komoditas tanaman pangan merupakan salah satu kegiatan yang mendapat dampak negatif dari perubahan iklim. Dampak negatif perubahan iklim terhadap produksi mempengaruhi volume ekspor. Komoditi kelapa sawit, biji kopi, dan biji kakao merupakan komoditas unggulan sektor pertanian yang memiliki daya saing tinggi di pasar internasional dan memberikan kontribusi yang besar terhadap perekonomian negara-negara pengekspor. Penelitian ini bertujuan untuk mengetahui sejauh mana dampak yang dapat ditimbulkan oleh perubahan temperatur rata-rata tahunan dan total curah hujan tahunan terhadap ekspor ketiga komoditas tersebut. Hasil penelitian menunjukkan bahwa variabel suhu dan curah hujan memiliki pengaruh yang berbeda terhadap ketiga komoditas tersebut. Variabel suhu dan curah hujan berpengaruh negatif signifikan terhadap ekspor biji kopi. Sedangkan untuk komoditas kelapa sawit, variabel suhu dan curah hujan berpengaruh positif terhadap ekspor kelapa sawit. Sedangkan untuk biji kakao, hanya variabel curah hujan yang berpengaruh positif terhadap ekspor., Climate change is believed to impact the economy of a country. The production of food crop commodities is one of the activities that negatively impact climate change. The negative impact of climate change on production affects the volume of exports. Commodities of palm oil, coffee beans, and cocoa beans contribute significantly to exporting countries' economies. This research aims to determine the extent of the impact that can be caused by changes in the annual average temperature and total annual precipitation on the exports of the three commodities. The result shows that temperature and precipitation variables have different effects on the three commodities. Temperature and precipitation variables have a significant adverse impact on coffee bean exports. Meanwhile, for oil palm commodities, temperature and precipitation variables positively affect palm oil exports. Meanwhile, for cocoa beans, only the precipitation variable positively affects export.
Keyword: Precipitation, Temperature, Panel Data, Export, Climate Change

Judul: Photosensor producing based on ferroelectric material of Ba0,5Sr0,5TiO3 doped by Ferrium Oxide (Fe2O3) on a P-Type Silicon Substate Si (100) applied as a digital camera with a single pixel image sensor
Abstrak: Thin film Ba0,5Sr0,5TiO3 (BST) doped with Fe2O3 was grown on p-type silicon substrate (100) using chemical solution deposition (CSD). It used the solvent 2-methoxyethanol with annealing temperature of 850°C and the doping treatment Fe2O3 of 2.5, 5, 7.5, 10 % of the mass formed BST. Pure BST had the highest absorption of 600 nm of light wavelength. Additions Fe2O3 moves highest absorption in the range of 560 nm. Fe2O3 addition was strengthening thin film sensitivity to the effects of light. In general, doping Fe2O3 10% was result the best absorbance and current-voltage of BST thin film. Electrical properties of thin films BST include dielectric, photoconductivity, and dissipation energy. Based on the current-voltage (I-V) analysis, pure BST and doped BST showed photodiode properties. Dielectric values obtained in the range from 23.32 to 243. Based on electrical conductivity data and energy dissipation, BST thin films have shown photodiode characteristics and are therefore suitable as light sensors. The image sensor in a digital camera is also a light sensor. This BST thin film has been scientifically proven to be a light sensor and also it can be applied as an image sensor. This is a novelty image sensor based on thin film Ba0.5Sr0.5TiO3.
Keyword: barium strontium titanate, thin film, photodiode, image sensor, digital camera