Judul: The Role of Information and Communication on Economic Growth of Indonesia (Input-Output Analysis)
Abstrak: Pada era digital, Teknologi Informasi dan Komunikasi (TIK) sangat penting karena dapat mempermudah kegiatan masyarakat dengan menghemat waktu, ruang, hingga biaya. Namun adanya perubahan masif akibat terjadinya pandemi Covid-19 mempengaruhi berbagai bidang kehidupan masyarakat termasuk sektor informasi dan komunikasi yang mengalami penurunan sehingga perlu dilakukan peningkatan produktivitas melalui pengeluaran pemerintah. Penelitian ini bertujuan untuk mengetahui keterkaitan dan efek pengganda sektor informasi dan komunikasi serta dampak pengeluaran pemerintah sektor informasi dan komunikasi. Metode analisis yang digunakan adalah analisis Input-Output klasifikasi 185 sektor yang diagregasi menjadi 20 sektor untuk analsisis keterkaitan dan efek pengganda serta 17 sektor untuk analisis dampak pengeluaran pemerintah. Hasil analisis menunjukkan terdapat tiga subsektor informasi dan komunikasi yang memiliki kemampuan yang tinggi untuk menarik pertumbuhan produksi sektor hulunya, yaitu subsektor hasil-hasil penerbitan, subsektor jasa penyiaran dan pemrograman, film dan hasil perekaman suara, serta subsektor jasa konsultasi komputer dan teknologi informasi dan komunikasi. Sedangkan dari keseluruhan subsektor yang dianalisis memiliki kemampuan yang rendah untuk mendorong pertumbuhan produksi sektor hilirnya. Nilai pengganda output, pendapatan, dan tenaga kerja tertinggi baik tipe I maupun tipe II didominasi oleh subsektor hasil-hasil penerbitan. Dampak peningkatan pengeluaran pemerintah pada sektor informasi dan komunikasi berpengaruh paling besar terhadap kinerja sektor itu sendiri baik dari sisi output, pendapatan, dan tenaga kerja., In the digital era, Information and Communication Technology (ICT) is very important because it can facilitate community activities by spending time, space, and costs. However, the massive changes due to the Covid-19 pandemic have affected various areas of people's lives, including the information and communication sector, which has decreased so that it is necessary to increase productivity through government spending. This research aims to determine the linkages and multiplier effects of the information and communication sector as well as the impact of government spending on the information and communication sector. The analytical method used is Input-Output a classification of 185 sectors which is aggregated into 20 sectors for analysis of linkages and multiplier effects and 17 sectors for analysis of the impact of government spending. The results of the analysis show that there are three information and communication subsectors that have the ability to attract growth in upstream sector production, namely the publishing products subsector, the broadcasting and programming services subsector, films and sound recording products, as well as the computer consulting services and information and communication technology subsectors. The highest output, income and employment multiplier values for both type I and type II are dominated by the publishing results subsector. The impact of increasing government spending on the information and communications sector has the greatest influence on the performance of the sector itself in terms of output, income and employment.
Keyword: Covid-19, Information and Communication, Input-Output, Government Expenditure

Judul: Covid-19 and Export Performance of the Agricultural Sector in Indonesia
Abstrak: Sektor pertanian merupakan sektor yang dapat dimanfaatkan untuk meningkatkan pembangunan ekonomi. Selama pandemi Covid-19, sektor pertanian menjadi salah satu sektor yang mampu tumbuh positif dengan kontribusi ekspor yang cukup tinggi. Penelitian ini bertujuan untuk menganalisis keterkaitan, pengganda output, pendapatan, dan tenaga kerja dari sektor pertanian, serta kinerja ekspor sektor pertanian pada masa pandemi Covid-19. Metode analisis yang digunakan adalah analisis input output dengan menggunakan Tabel Input Output Indonesia Tahun 2016, klasifikasi 185 sektor yang diagregasi menjadi 48 sektor. Hasil analisis menunjukkan bahwa komoditas sektor pertanian memiliki kemampuan yang lemah dalam meningkatkan sektor hulu dan hilirnya. Sektor pertanian yang memiliki pengganda output, pendapatan, dan tenaga kerja tertinggi didominasi oleh unggas dan hasil-hasilnya. Kinerja ekspor sektor pertanian berpengaruh terhadap peningkatan output, pendapatan, dan tenaga kerja paling besar pada sektor kelapa sawit, kelapa, serta unggas dan hasil-hasilnya. Hal ini disebabkan sektor tersebut mendapat dampak yang kecil akibat adanya Covid-19 dan permintaan impor dari luar negeri masih cukup tinggi., The agricultural sector is sector that can be used to increase economic development. During the Covid-19 pandemic, the agricultural sector became one of the sectors that were able to grow positively with a fairly high export contribution. This study aims to analyze the linkages, output multipliers, income, and labor from the agricultural sector, as well as the export performance of the agricultural sector during the Covid-19 pandemic. The analytical method used is input output analysis using the 2016 Indonesian Input Output Table, the classification of 185 sectors which are aggregated into 48 sectors. The results of the analysis show that agricultural sector commodities have a weak ability to improve their upstream and downstream sectors. The agricultural sector which has the highest multiplier of output, income, and labor, is dominated by poultry and their products. The export performance of the agricultural sector has the greatest effect on increasing output, income, and labor in the oil palm, coconut, poultry and their products. This is because the sector has had little impact due to Covid-19 and the demand for imports from abroad is still quite high.
Keyword: Covid-19, ekspor, input output, pertanian

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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