Judul: Faktor-faktor yang Mempengaruhi Volume Ekspor Kopi Indonesia ke Pasar Internasional
Abstrak: Agriculture is a sector that plays a vital role in economic activity in Indonesia. The contribution of agriculture to Gross Domestic Product was around 12.72 percent in 2019, which is the third-largest proportion after the Manufacturing Industry and Wholesale and Retail Trade at 19.70 percent and Car and Bicycle Repair Motor by 13.01 percent (BPS, 2020). As one of the largest coffee exporters in the world, Indonesia has significant destination countries in exporting coffee beans. The ten countries that are the main markets for Indonesian coffee beans are the United States, Germany, Japan, Italy, Malaysia, England, Egypt, Belgium, Algeria, and India. From year to year, Indonesian coffee exports continue to fluctuate. This becomes a question, what factors affect Indonesian coffee exports to the international market. This study aims to identify the factors that influence changes in the volume of Indonesian coffee exports to major importing countries (the United States, Germany, Japan, Italy, Malaysia, England, Egypt, Belgium, Algeria, and India). The data used in this study is panel data from 2000 to 2019. The method used in this study is Panel Data Regression with a Fixed Effect Model (FEM) approach to determine whether the independent variables in this study have a significant effect on coffee exports and how the relationship between the dependent and independent variables partially. Based on the data processing carried out, it was found that Gross Domestic Product (GDP), exchange rate, and retail prices of importing countries significantly influence in a negative relationship the volume of Indonesian coffee exports to export destination countries. The Great depression in 2008 has a positive and significant relationship with the dependent variable. Meanwhile, other variables, namely the volume of production, and variable of government intervention in 2012, did not significantly affect the volume of Indonesian coffee exports.
Keyword: coffee, export volume, international market

Judul: Faktor-Faktor yang Mempengaruhi Ekspor Biji Kopi Indonesia ke Negara Tujuan Utama
Abstrak: Biji kopi khususnya jenis kopi HS 090111 (Coffee, not roasted, not decaffeinated) merupakan salah satu komoditas perkebunan Indonesia yang potensial. Hal tersebut menjadikan Indonesia sebagai negara eksportir kopi terbesar keempat di dunia. Oleh karena itu, penelitian ini bertujuan menganalisis faktor-faktor yang mempengaruhi ekspor biji kopi Indonesia ke negara tujuan utama menggunakan gravity model. Data yang digunakan adalah data sekunder tahunan yang diperoleh dari UN Comtrade, World Bank, CEPII dan OANDA. Hasil estimasi gravity model menunjukkan faktor-faktor yang berpengaruh terhadap ekspor biji kopi Indonesia yaitu GDP riil per kapita Indonesia, nilai tukar Indonesia dan jarak ekonomi.
Keyword: biji kopi, gravity model, volume ekspor

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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