Judul: Analysis of the Level of Development and Directive of Regional Development in Aceh Province
Abstrak: Kebijakan pembangunan wilayah meliputi kawasan pedesaan dan perkotaan di Provinsi Aceh selama ini belum mampu memberikan perubahan yang signifikan terhadap peningkatan kesejahteraan masyarakat. BPS Provinsi Aceh (2017) menyebutkan bahwa tingkat kemisikinan Provinsi Aceh menempati urutan pertama di Pulau Sumatera. Terkait dengan kewenangan otonomi daerah terhadap pertumbuhan ekonomi, kebijakan pemekaran memberikan peluang dan tantangan pemerintah daerah untuk mengelola sumberdaya yang dimiliki secara efisien dan efektif. Setelah 10 tahun terakhir terjadi pemekaran kabupaten/kota masih terdapat tingkat garis kemiskinan yang tinggi di Provinsi Aceh. Tinnginya penduduk miskin memerlukan suatu penelitian untuk menganalisis tingkat perkembangan wilayah sebagai acuan dalam pembangunan wilayah. Hasil penelitian tersebut diharapkan bisa dijadikan dasar bagi pemrintah Provinsi Aceh dalam merumuskan kebijakan pembangunan untuk mendorong pertumbuhan ekonomi wilayah. Tujuan dari penelitian ini adalah (1) Menganalisis pertumbuhan ekonomi Kabupaten/Kota di Provinsi Aceh; (2) Menganalisis tingkat perkembangan wilayah Kabupaten/Kota Provinsi Aceh; (3) Mengidentifikasikan faktor-faktor yang mempengaruhi tingkat perkembangan wilayah Kabupaten/Kota di Provinsi Aceh; (4) Mengklasifikasikan kabupaten/kota di Provinsi Aceh berdasarkan kemiripan karakteristik dan tingkat perkembangan wilayah; (5) Arahan pembangunan wilayah di Provinsi Aceh. Analisis dilakukan dengan menggunakan metode Tipologi Klassen, Indeks Diversitas Entropi, Skalogram, Gerographically Weighted Regression, Clustering dan analisis deskriptif. Hasil analisis tipologi klassen menunjukkan bahwa sebagian besar kabupaten/kota di Provinsi Aceh berada pada kuadran IV (wilayah berkembang cepat). Wilayah yang termasuk dalam kuadran I (Wilayah Maju) adalah Kota Banda Aceh, Kota Sabang, Kabupaten Nagan Raya dan Kabupaten Aceh Tengah. Wilayah pada kuadran II (Wilayah Maju Tapi Tertekan) yaitu Kota Lhokseumawe Kabupaten Aceh Barat dan Kabupaten Aceh Utara. Daerah yang berada pada kuadran III (Wilayah Relatif Terbelakang) hanya terdapat satu daerah, yaitu Kabupaten Aceh Timur, Kabupaten Aceh Tamiang dan Kabupaten Aceh Barat Daya. Daerah yang berada pada kuadran (IV) Yaitu: Kabupaten Aceh Tenggara, Kabupaten Gayo Lues, Kabupaten Bener Meriah, Kabupaten Bireuen, Kabupaten Pidie Jaya, Kabupaten Pidie, Kabupaten Aceh Besar, Kabupaten Aceh Jaya, Kabupaten Aceh Selatan, Kabupaten Aceh Singkil, Kabupaten Simeulue, Kota Langsa Dan Kota Subulussalam., Regional development policies covering rural and urban areas in Aceh Province so far have not been able to provide significant changes to the improvement of community welfare. The Aceh Province BPS (2017) states that the level of poverty in Aceh Province ranks first on the island of Sumatra. Regarding regional autonomy authority on economic growth, the expansion policy provides opportunities and challenges for local governments to manage their resources efficiently and effectively. After the last 10 years there has been a division of districts / cities, there is still a high level of poverty line in Aceh Province. The least, the poor need a study to analyze the level of regional development as a reference in regional development. The results of the study are expected to be used as a basis for the government of Aceh Province in formulating development policies to encourage regional economic growth. The purpose of this study is (1) to analyze the economic growth of regencies / cities in Aceh Province; (2) Analyzing the level of development of the District / City of Aceh Province; (3) Identifying factors that influence the level of development of the Regency / City region in Aceh Province; (4) Classifying
Keyword: Regional Development, Geographically Weighted Regression (GWR), Clustering, Typology Klassen, Economic Growth, Community Welfare

Judul: Ketimpangan Regional Pembangunan Infrastruktur dan Ekonomi Provinsi Aceh: Analisis Antar Provinsi
Abstrak: Inequality is not a new problem in Indonesia, as it is in Aceh Province. The availability of different infrastructure in each city and district is one physical example of the imbalance itself because the availability of infrastructure is also a determining factor for the economic growth of each region. In fact, this province receives a special grant from the central government where the funds are specifically for infrastructure development and economic growth. However, the real condition of the province's poverty rate and the highest unemployment rate in the island of Sumatra negates all the privileged benefits of the aid funds that have been allocated for years. Therefore, these infrastructure facilities are very important when considering the conditions of economic growth to be achieved for each region with the ultimate goal of more equitable growth. On the other hand, infrastructure also has an indirect impact on GDP / capita, poverty level and also the total unemployment rate in Aceh Province. In fact, several cities and districts have very high unemployment rates and very low economic growth rates, indicated by the low GDP growth rates of each city and district. On the other hand, the availability of facilities and infrastructure is also a major factor in hampering the progress of economic activity in each region. Hence, this study provides empirical findings regarding disparities between regions in infrastructure in 23 cities / districts in Aceh Province and the impact of these regional disparities on the economy of Aceh Province, particularly economic growth, poverty and unemployment. The unit of analysis is the district level where the Infrastructure Development Index (IDI) is analyzed using the multivariate method to measure the level of availability of facilities. The IDI calculation is based on the nine infrastructure or facilities available in Aceh Province. Furthermore, the level of disparity in infrastructure between regions is analyzed using the coefficient of variation. The effect of IDI on the provincial economy was analyzed using an econometric model. The results of the analysis based on the IDI show that in the 2015- 2019 period, in general the level of infrastructure availability in each district / city was relatively high / low with the average IDI value tending to increase from 0.591 in 2015 to 0.612 and in 2019 the highest IDI score. is 0.807 (Sabang City) and the lowest value is 0.152 (Langsa City). However, based on the analysis of the coefficient of variation in the disparity in the level of infrastructure availability between relatively small areas, it is less than 0.3 and tends to decline. Based on the results of the regression analysis, it shows that the level of infrastructure availability, IDI in general affects the economic conditions of Aceh Province and specifically there are different types of infrastructure that affect each economic condition (economic growth, unemployment and poverty). Of the nine infrastructure variables, only three variables can reduce poverty, namely electricity, roads and hotels infrastructure; only one variable can reduce unemployment, namely road infrastructure and there are three variables that increase economic growth, namely rural electricity infrastructure, hotels and banks.
Keyword: economic growth; infrastructure development index; poverty; unemployment, economic growth, infrastructure development, unemployment, index, poverty

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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