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 Indonesia Agroindusty Sector
Abstrak: Sektor agroindustri merupakan leading sector yang berperan dalam menciptakan nilai tambah pertanian dan menghasilkan devisa melalui ekspornya. Tahun 2020 kinerja ekspor agroindustri mengalami pertumbuhan negatif akibat Covid-19 yang memengaruhi perekonomian Indonesia maupun global. Tujuan dari penelitian ini adalah menganalisis peranan sektor agroindustri bagi sektor perekonomian melalui dampak penyebaran dan efek multiplier serta mengkaji kinerja ekspor agroindustri Indonesia di masa pandemi Covid-19. Penelitian ini menggunakan data sekunder dari Tabel Input-Output Indonesia tahun 2016 dan perubahan ekspor masing-masing subsektor agroindustri tahun 2020. Hasil analisis menunjukkan subsektor industri karet dan barangnya memiliki koefisien penyebaran yang tertinggi, sementara nilai kepekaan penyebaran tertinggi diperoleh industri kimia dan barangnya. Nilai multiplier output tertinggi dihasilkan subsektor industri karet dan barangnya. Nilai multiplier pendapatan dan tenaga kerja didominasi oleh subsektor industri makanan. Kinerja ekspor sektor agroindustri terhadap output, pendapatan, dan tenaga kerja berdampak paling besar bagi padi, kelapa sawit, peternakan, dan industri makanan di masa pandemi Covid-19., The agro-industrial sector is a leading sector that plays a role in creating added value for agriculture and generating foreign exchange through its exports. In 2020, the export performance of agro-industry experienced negative growth due to Covid-19 which affected the Indonesian and global economy. This study aims to analyze the role of the agro-industrial sector for the economic sector through the impact of the spread and the multiplier effect and examine the export performance of Indonesian agroindustry during the Covid-19 pandemic. This study uses secondary data from the Indonesian Input-Output Table in 2016 and changes in exports of each agro-industry sub-sector in 2020. The results of the analysis show that the rubber and goods industry sub-sector has the highest distribution coefficient, while the highest dispersion sensitivity value is obtained by the chemical industry and its goods. The highest output multiplier is produced by the rubber and goods industry subsector. The value of the income and labor multiplier is dominated by the food industry sub-sector. The export performance of the agro-industry sector on output, income and labor has the biggest impact on rice, palm oil, livestock, and the food industry during the Covid-19 pandemic.
Keyword: covid-19, export, input-output, agricultural

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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