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: Analysis of Non-Tariff Measures and Factors  Affecting Indonesian Coffee Exports to Destination Countries
Abstrak: Kopi merupakan salah satu komoditas ekspor unggulan subsektor perkebunan di Indonesia namun pertumbuhan ekspor kopi menunjukkan kecenderungan yang menurun. Negara-negara tujuan ekspor aktif memberlakukan tindakan Non Tarif Measures (NTMs) berupa kebijakan Sanitary and Phitosanitary (SPS) dan Technical Barrier to Trade (TBT) yang disinyalir menjadi hambatan perdagangan. Penelitian ini bertujuan menganalisis kinerja ekspor kopi Indonesia dan pemberlakuan NTMs serta faktor-faktor yang memengaruhi ekspor kopi Indonesia ke negara tujuan. Metode yang digunakan yaitu analisis pendekatan inventory dan model gravity dengan series tahun 2010-2019. Hasil penelitian menunjukkan bahwa kinerja perdagangan kopi Indonesia berfluktuatif dan tidak menunjukkan peningkatan pertumbuhan ekspor yang signifikan. Pemberlakuan tindakan NTMs terbanyak adalah SPS. Hasil estimasi gravity panel menunjukkan bahwa GDP negara pengekspor, nilai tukar, jarak ekonomi, dan coverage ratio SPS berpengaruh negatif dan signifikan. Sedangkan GDP negara pengimpor, populasi negara pengekspor, populasi negara pengimpor, dan coverage ratio TBT berpengaruh positif dan signifikan terhadap ekspor kopi Indonesia., Coffee is one of the leading export commodities of the plantation sub-sector in Indonesia, however coffee export growth shows a downward trend. Export destination countries actively impose Non-Tariff Measures (NTMs) in the form of Sanitary and Phitosanitary (SPS) and Technical Barrier to Trade (TBT) policies which are alleged to be trade barriers. This study aims to analyze the performance of Indonesian coffee exports and the application of NTMs and the factors that influence Indonesian coffee exports to destination countries. The method used is an analysis of the inventory approach and gravity model with the 2010-2019 series. The results showed that the performance of the Indonesian coffee trade fluctuated and did not show a significant increase in export growth. The most NTMs were enforced by SPS. The estimation results of the gravity panel show that the GDP of the exporting country, the exchange rate, economic distance, and the SPS coverage ratio have a negative and significant effect. Meanwhile, the GDP of the importing country, the population of the exporting country, the population of the importing country, and the TBT coverage ratio have a positive and significant effect on Indonesia's coffee exports
Keyword: ekspor, kopi, model gravity, NTMs, pendekatan inventory, export, coffee, gravity model, NTMs, inventory approach

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4