Judul: The Relationship between stock price index and  interest rates in ASEAN-5 countries before and during the Covid-19 pandemic
Abstrak: Pandemi Covid-19 adalah fenomena yang terjadi pada akhir tahun 2019, Covid-19 memiliki dampak tidak hanya bagi kesehatan juga berdampak pada keadaan ekonomi suatu negara. Hal tersebut juga berpengaruh terhadap tingkat suku bunga dan indeks harga saham pada negara ASEAN-5. Tujuan dari penelitian ini adalah untuk menganalisis hubungan tingkat suku bunga dan ineks harga saham di negara ASEAN-5 pada masa sebelum dan saat pandemi Covid-19. Penelitian ini menggunakan metode deskriptif dan kuantitatif dengan menggunakan analisis VARX (Vector Autoregressive with Exogenous). Hasil dari penelitian ini yaitu pada masa sebelum pandemi Covid-19 indeks harga saham negara ASEAN-5 cenderung stabil dikarenakan kebijakan moneter yang eketif melalui suku bunga, namun pada masa pandemi Covid-19 suku bunga tidak berpengaruh secara signifika terhadap indeks harga saham, hal tersebut dikarenakan tingginya sentimen negatif investor terhadap indeks harga saham saat pandemi Covid-19. Berdasarkan interpretasi IRF exogenous, indeks harga saham dan suku bunga negara ASEAN-5 masih berfluktuatif dengan adanya guncangan penambahan kasus Covid-19. Hal tersebut menunjukkan bahwa ekonomi negara ASEAN-5 masih rentan terhadap guncangan pandemi Covid-19., The Covid-19 pandemic is a phenomenon that occurred at the end of 2019. Covid-19 has an impact not only on health but also on the economic state of a country. This also affects interest rates and stock price indexes in ASEAN-5 countries. The purpose of this study was to analyze the relationship between interest rates and stock price indexes in ASEAN-5 countries before and during the Covid-19 pandemic. This study used descriptive and quantitative methods using VARX (Vector Autoregressive with Exogenous) analysis. The results of this study in the period before the Covid-19 pandemic the stock price index of ASEAN-5 countries tended to be stable due to effective monetary policy through interest rates, but during the Covid-19 pandemic interest rates did not significantly affect the stock price index, it was due to high negative investor sentiment towards the stock price index during the Covid-19 pandemic. Based on the IRF exogenous interpretation, the stock price index and interst rate of ASEAN-5 are still fluctuating whit their shock of Covid-19 cases. This shows that the ASEAN-5 economies are still vulnerable to the shocks of the Covid-19 pandemic.
Keyword: ASEAN-5, Covid-19, interest rate, stock price index, VARX, ASEAN-5, Covid-19, interest rate, stock price index, VARX

Judul: The Effect of Stringency Index and Macroeconomic Variables on Stock Movements during The Covid-19 Pandemic: Empirical Evidence from 50 Countries
Abstrak: Pandemi Covid-19 menjadi isu yang penting saat ini dan berdampak pada perekonomian dan pasar saham. Untuk menangani dampak pandemi ini, terdapat respon pemerintah yang berbeda antar negara sehingga dilakukan perbandingan keketatan respon pemerintah dengan stringency index. Untuk menganalisis bagaimana keketatan respon pemerintah dan variabel makroekonomi terhadap pergerakan saham selama pandemi Covid-19, maka dilakukan penelitian dengan data cross section yang terdiri dari 50 negara dan data time series bulanan periode 2020-2021. Metode yang digunakan adalah panel statis dan dinamis, sehingga ditemukan model terbaik yaitu panel statis dengan random effect model. Hasil pada penelitian yaitu pengaruh stringency index terhadap pergerakan saham positif dan signifikan yang berarti semakin ketat respon pemerintah dalam menangani dampak pandemi Covid-19 maka indeks saham akan meningkat. Inflasi dan nilai tukar berpengaruh positif signifikan dan pertumbuhan jumlah uang yang beredar berpengaruh positif tetapi tidak signifikan pada pergerakan saham., The Covid-19 pandemic is a crucial issue today and impacts the economy and the stock market. There are different government responses between countries to deal with the impact of this pandemic, so a comparison of the tightness of the government's response with a stringency index is carried out. This paper analyzes the government's response and macroeconomic variables to stock movements during the Covid-19 pandemic using cross-section data of 50 countries and time-series monthly data for the 2020-2021 period. The method used is static and dynamic panel. The best model is a static panel with a random effect model. The results is the effect of the stringency index is positive and significant to stock movements, which means that the tighter the government's response in dealing with the impact of the Covid-19 pandemic, the stock index will increase. Inflation and exchange rates have a significant positive effect and money growth has a positive but not significant impact on stock movements.
Keyword: Dynamic Panel, Macroeconomics, Pandemic, Stock Market, Static Panel, Stringency Index

Judul: Design of gathering-conveying unit of mobile sugar cane trash chopping machine
Abstrak: A machine for gathering and chopping the piles of sugarcane trash on the field after harvesting is being designed. As a part of the machine, a gathering-conveying unit was designed. Important data including condition and characteristics of trash were collected and used for designing the unit. The average bulk density of trash on the field was 7.7 kg/m3, the average pressure to compress the trash from 40 cm to 30 cm thickness was 50.65 N/m2, and the pressure to compress the trash from 27 cm to 8 cm thickness was 1166.60 N/m2. The unit was designed to be operated at 0.3 m/s forward speed, and having 60 cm working width. The unit was consisted of: a gathering reel, a pair of conveyors, cover-frame and power transmission components. Size and operational speed of moving components were determined by analyzing mass flow rate of the trash, and operating power of the components. The gathering reel was 100 cm in diameter and having 4 series of gathering fingers for drawing and feeding the trash into the conveyors. A pair of chain-conveyors equipped with L-shaped steel bars was set face to face on lower side and upper side for conveying and feeding the leaves to the chopping unit. The stationary test showed that the gathering reel and the conveyors could work properly. The average rotational speed of the conveyor shaft and the gathering reel were 34.03 rpm and 9.97 rpm, respectively. The working capacity of the unit was 400-500 kg/hour.
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