Judul: Pengaruh Investasi terhadap Pertumbuhan Ekonomi Regional di Indonesia
Abstrak: Pemerintahan Jokowi-JK meluncurkan 16 paket kebijakan ekonomi yang diharapkan meningkatkan investasi baik Penanaman Modal Asing (PMA) dan Penanaman Modal Dalam Negeri (PMDN) setiap wilayah di Indonesia. Penelitian ini bertujuan untuk menganalisis faktor-faktor yang mempengaruhi investasi baik PMA maupun PMDN serta pengaruh PMA dan PMDN terhadap pertumbuhan ekonomi regional di Indonesia. Data yang digunakan berupa data panel 34 provinsi di Indonesia selama 2015-2018. Metode yang digunakan dalam penelitian ini adalah analisis deskriptif dan kuantitatif berupa data panel menggunakan Fixed Effect Model (FEM). Hasil penelitian memperlihatkan bahwa pertumbuhan ekonomi, laju pertumbuhan ekonomi, ekspor-impor dan angkatan kerja terbukti memengaruhi PMA dan PMDN. Selain itu, PMA, PMDN, angkatan kerja dan ekspor berpengaruh positif dan signifikan terhadap pertumbuhan ekonomi sedangkan impor berpengaruh negatif namun tidak signifikan. Pemerintah perlu melakukan pemerataan pertumbuhan ekonomi, ekspor-impor, angkatan kerja serta stabilisasi laju pertumbuhan ekonomi untuk meningkatkan PMA dan PMDN setiap wilayah di Indonesia. PMA dan PMDN diharapkan dapat diarahkan ke sektor potensial masing-masing wilayah di Indonesia.
Keyword: data panel, fixed effect model, pertumbuhan ekonomi, regional

Judul: Analysis of the Impact of Capital and Labor on the Regional Economy in Indonesia
Abstrak: Perekonomian regional merupakan proses dimana pemerintah daerah bersama masyarakat berusaha untuk mengelola sumber daya dan membentuk kerja sama untuk memajukan perekonomian. Menurut teori neo klasik, modal dan tenaga kerja termasuk dalam faktor-faktor produksi yang memengaruhi perkembangan perekonomian regional. Hingga saat ini, struktur perekonomian Indonesia masih didominasi oleh Pulau Jawa. Penelitian ini bertujuan untuk mendeskripsikan kondisi perekonomian regional dan menganalisis pengaruh investasi domestik, investasi luar negeri, infrastruktur listrik, infrastruktur kesehatan, dan tenaga kerja terhadap perekonomian regional di Indonesia selama periode 2010-2021. Metode analisis yang digunakan dalam penelitian ini adalah analisis deskriptif dan analisis data panel. Hasil estimasi data panel menunjukkan bahwa investasi domestik, investasi luar negeri, infrastruktur listrik, infrastruktur kesehatan, dan tenaga kerja secara signfikan berpengaruh positif terhadap perekonomian regional di Indonesia. Tenaga kerja menjadi variabel yang paling kecil dalam memengaruhi perekonomian regional karena adanya kaitan dengan pengangguran dan perubahan struktur ekonomi., The regional economy is a process where local governments and communities try to manage resources and form partnerships to advance the economy. According to the neo-classical theory, capital and labor are included in the factors of production that impact regional economic development. Until now, the structure of the Indonesian economy is still dominated by Java. This study aims to describe the condition of the regional economy and analyze the impact of domestic investment, foreign investment, electricity infrastructure, health infrastructure, and labor to the regional economy in Indonesia during the 2010-2021 period. The analytical method used in this research is descriptive analysis and panel data analysis. The panel data estimation results show that domestic investment, foreign investment, electricity infrastructure, health infrastructure, and labor have a significant positive effect on the regional economy in Indonesia. Labor is the smallest variable affecting the regional economy because of its connection with unemployment and changes in economic structure.
Keyword: Data Panel, Modal, Perekonomian Regional, Tenaga Kerja

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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