Judul: Analysis of Food Price Stability For Livestock Commodities Before and During The Covid-19 Pandemic (Year Period 2019-2020)
Abstrak: Pandemi Covid-19 telah memyebabkan harga pangan sangat berfluktuasi. Fluktuasi harga yang tinggi dapat menyebabkan ketidakpsatian konsumsi pangan masyarakat dan dapat memengaruhi kualitas sumberdaya manusia pada jangka panjang. Penelitian ini bertujuan untuk menganalisis fluktuasi dan pengaruh regulasi pangan komoditas hasil peternakan sebelum dan saat pandemic Covid-19 . Fluktuasi harga pangan dianalisis dengan menggunakan Coefficient of Variation, sedangkan konvergensi dan pengaruh regulasi dianalisis dengan metode data panel dinamis dan statis. Hasil penelitian menunjukkan bahwa harga daging ayam sangat berfluktuasi dibandingkan dengan telur ayam dan daging sapi baik sebelum dan saat pandemi Covid-19. Harga daging ayam dan telur ayam akan mengalami proses konvergensi dengan kecepatan yang lambat. Pemberlakuan regulasi harga acuan terbaru akan menyebabkan harga telur ayam akan naik dan semakin berfluktuasi, namun fluktuasi harga daging ayam akan menurun. Berdasarkan hasil penelitian perlu pengkajian ulang terkait regulasi harga acuan selama pandemi Covid-19., The Covid-19 pandemic has caused food price to fluctuate greatly. High price fluctuation could effect uncertainty of public food consumption and could affect the quality of human resources in the future. This study aims to analyze the fluctuations and impact of food regulation on livestock commodities before and during the Covid-19 pandemic. The analysis method used to measure food price fluctuation is the coefficient of variation, while convergence and the impact of regulatory used dynamic and static panel data. The result showed that food price fluctuation for chicken is higher than beef and eggs both before and during the Covid-19 pandemic. The price of chicken and eggs will be converge at a slow pace. The implementation of the latest price regulation will cause the price of eggs to rise and more fluctuate, but the price of chicken will decrease. Based on the research results, there is still required to do re-assessment of reference price during the Covid-19 Pandemic
Keyword: dynamic panel data, harga acuan, konvergensi, protein hewani

Judul: The Effect of Rice Prices on Other Food Prices Before During and After Covid 19 Pandemic
Abstrak: Beras di Indonesia merupakan komoditas yang sangat strategis dari segi ekonomi, sosial, lingkungan dan politik. Pandemi Covid-19 menyebabkan perubahan dan fluktuasi harga pada komoditas pangan. Terjadinya fluktuasi harga pangan menandakan bahwa negara tersebut tidak stabil. Tujuan dari penelitian ini adalah untuk menganalisis pola perubahan harga beras sebelum, saat, dan setelah pandemi Covid -19 dan menganalisis pengaruh perubahan harga beras terhadap harga dari komoditas pangan lainnya. Metode yang digunakan yaitu statistik deskriptif dengan analisis koefisien variasi dan analisis korelasi. Hasil dari penelitian ini menunjukkan bahwa harga beras mengalami penurunan selama pandemi Covid-19 dan meningkat setelah pandemi berakhir dan harga beras cenderung stabil di tingkat pedagang besar serta pasar tradisional. Harga beras cenderung berkorelasi positif terhadap harga pangan lain sehingga ketika harga beras mengalami peningkatan maka harga pangan lain akan meningkat., Rice in Indonesia is a highly strategic commodity in terms of economics, social, environmental, and political aspects. The Covid-19 pandemic has caused changes and fluctuations in the prices of food commodities. The occurrence of food price fluctuations indicates instability in the country. The purpose of this research is to analyze the patterns of rice price changes before, during, and after the Covid-19 pandemic and to examine the influence of rice price changes on the prices of other food commodities. The method used is descriptive statistics with coefficient of variation analysis and correlation analysis. The results of this study indicate that rice prices decreased during the Covid-19 pandemic and increased after the pandemic ended, and rice prices tend to be stable at the level of wholesalers and traditional markets. Rice prices tend to have a positive correlation with the prices of other food items, so when rice prices increase, the prices of other food items will also rise.
Keyword: Covid-19 Pandemic, Coefficient of Variance, Correlation Analysis, Food Commodities, Rice Prices

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