Judul: Penentuan prioritas pembangunan berdasarkan potensi dan tingkat perkembangan kecamatan di kota Depok
Abstrak: A Priority Setting of Development is related to Potential and Actual Development Level. Depok City, as hinterland of Jakarta, has high impact of suburbanization where some areas has being converted into some building areas such as industry, trading, and property. Process of urban sprawl is getting worse, and feared it would be come “a waste” of Jakarta development as the impact of crossings and residential location for commuters. Therefore we need to know the development characteristic of Depok City in Jabodetabek Metropolitan Area as macro level, Depok City itself as meso level, and the potential and actual development of each sub-district level. Analysing development characteristic for each level would be conducted by using LQ, SSA, Skalogram, Index Entropy, and PCA analysis. The result showed in macro level, Depok City has a potential sector in the industrial, electricity-gas-water, and trade sector, in meso level, Depok City development policy focus on trade and services sector by considering a sustainable environmental support, though in micro level, each sub-district has various potential sector, such as industry in Sawangan; elctricity-gas-water, industry, and transportation in Pancoran Mas; services and industry in Sukmajaya; industry and trade in Cimanggis, agriculture and construction in Beji, the mining and quarrying, electricity-gas-water, transportation, and financial center in Limo. Whereas based on the actual development by using the PCA analysis, we got three regional typologies such as CBD Region, Under-develop Region, and Residential Region. Pancoran Mas, Sukmajaya and Beji are included in the CBD Region; Sawangan, Beji and Pancoran Mas are included in Under-developed Region; Pancoran Mas, Limo, and Beji are included in the Residential Region. Based on potential sector and regional typology, it can be formulated what became the priority of development in each sub-district, such as agroindustry development in Sawangan and Cimanggis, improvement services function centre of electricity-gas-water in Pancoran Mas, controlling spatial activities in Sukmajaya, strenghtening urban agriculture in Beji, and controlling bussiness property activities in Limo.
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Judul: Analisis Keberelanjutan Lokal Kota Depok, Jawa Barat
Abstrak: Depok City is part of the Greater Jakarta Metropolitan Area which is experiencing urban expansion and high population migration pressure. However, within last decade there has been an imbalance development, where economic and social dimensions tend to be better than the performance of environmental one. This can be seen from the increase of economic and public service facilities, in contrast to a decrease in environmental quality. The performance of Depok City's sustainable development can be measured at a micro analysis (at the kelurahan level), namely by calculating the Local Sustainability Index (IKL). This research was carried out in Depok City from January 2021 to December 2021 by using several characteristics of Depok City villages in 2018, collected from Figures for the Depok City in 2018, as well as the Depok City administration map. The IKL was computed employing factor analysis (FA) on Statistica 7.0 and then the spatial distribution was mapped based on administrative region in ArcGIS. The Spatial Association of IKL was evaluated by using Global Moran Index and LISA (Local Indicator of Spatial Autocorrelation) with GeoDa, and the typology of the region was then grouped by employing cluster analysis on Statistica 7.0. The results showed that economic IKL was higher than social and environmental IKLs. The spatial pattern of social, economic, and environmental IKL as indicators of local sustainability was somewhat random. Global Moran Index for social, economic, and environmental dimensions were 0.209, 0.229, and 0.202, respectively, which indicate positive autocorrelations describing spatially clustered pattern. The cluster analysis resulted 63% of urban villages occupied Cluster 1 (having a very low IKL for social dimension value, economic and environmental dimensions are classified as moderate value), 24% of villages occupied Cluster 2 (having a high IKL economic dimension value, social and environmental dimensions are classified as low IKL value, and 13% of villages occupied Cluster 3 (having a high IKL social dimension values, economic and environmental dimensions are classified as moderate IKL value). Furthermore, the results of this research can be used by the government of Depok City as a recommendation in formulating policies, plans, and/or programs in an effort to actualize sustainable development in each kelurahan.
Keyword: cluster analysis, factor analysis, Global Moran Index, Local Sustainability Index, LISA

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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