Judul: The effect of Climate Change and Other Determinants on Coffee Prices in Indonesia
Abstrak: Climate change is a severe problem that will be faced by all people in the world. One of the climate changes that often occur and have a significant impact on Indonesia is the El Nino Southern Oscillation (ENSO). The ENSO phenomenon causes fluctuations in rainfall that affect the production of the agricultural sector, especially plantation crops. This study uses the spatial panel analysis method to examine the effect of climate change using rainfall indicators on coffee prices. The data used are from the ten largest coffee-producing provinces with a time span from 2010 to 2020. The results show that rainfall has a significant effect on the increase in coffee prices, followed by other factors, substitution prices, productivity, population, and wages of farm labor in the plantation sub-sector. Meanwhile, the COVID-19 pandemic has had an effect on coffee prices.
Keyword: coffee, climate change, ENSO, rainfall, spatial panel

Judul: Kaitan Perubahan Iklim terhadap Harga Pangan serta Hortikultura di Daerah Terdampak Fenomena El Nino dan La Nina
Abstrak: Perubahan iklim menjadi suatu isu global karena berdampak luas pada kondisi sosial ekonomi suatu negara. Faktor utama yang memengaruhi perubahan iklim di Indonesia adalah El Nino Southern Oscillation (ENSO) yang terdiri dari tiga fase yaitu fase El Nino, Normal, dan La Nina. ENSO memainkan peran penting terhadap variasi iklim dan intensitas curah hujan, sehingga dapat berdampak pada sektor pertanian khususnya subsektor tanaman pangan dan hortikultura yang sangat rentan terhadap perubahan iklim. Penelitian ini mengkaji dampak perubahan iklim terhadap harga pangan dan hortikultura yaitu harga beras, jagung, kedelai dan cabai merah menggunakan metode panel statis. Data cross section memfokuskan pada 10 provinsi yang paling terdampak fenomena ENSO, sedangkan data time series digunakan dari tahun 2011Q1 sampai 2016Q4. Hasil yang diperoleh menunjukkan bahwa El Nino berpengaruh signifikan terhadap peningkatan harga beras dan kedelai serta penurunan harga jagung. Sedangkan La Nina berpengaruh signifikan terhadap peningkatan harga beras dan penurunan harga cabai merah. Secara umum El Nino memberikan dampak lebih besar terhadap harga pangan daripada La Nina.
Keyword: el nino, harga pangan, la nina, panel data, perubahan iklim

Judul: Penyusunan Overlap Graph menggunakan Suffix Tree pada DNA Sequence
Abstrak: The DNA sequence assembly is very important in genome analysis. This step aims to reconstruct contigous DNA fragment (contigs) from short fragment by concatenating fragments based on the overlap region among them. This method employs overlap graph for solving the problems. In this graph, nodes represent fragments and edges represent overlap. This research developed a software for constructing overlap graph using suffix tree. The evaluation was conducted by measuring the number of nodes, number of edges, and the execution time in many values of minimum overlap. The minimum overlap is defined as the minimum length of substring which is considered as the overlap region between two fragments. The evaluation results showed that the number of nodes, the number of edges, and the execution time were increased with the decreasing of the minimum overlap value.
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