Judul: Analisis spasial disparitas pembangunan antar wilayah di provinsi Sumatera Barat
Abstrak: The phenomenon of disparity areas have become commonplace in the development of an area for various reasons. Development of region in the province of West Sumatra by naked eye there is a disparity in the region indicated. The objectives of this research are 1) determine the amount of disparity in development between regions, 2) identify the sectors held by each district / city; 3) determine the level of development and regional characteristics; 4) analyze the factors that cause disparities in development among regions; 5) to formulate strategies to address the problem of regional development disparities. Analytical methods used are Williamsons Index, Theill Index, Location Quotient Index, Shift Share Analysis, Scalogram Method, Entropy Index, Physical Analysis, Klassen Typology, Factor Analysis, Multiple Regression, and SWOT analysis. The analysis showed there are gaps in the province of West Sumatra which occurs predominantly among areas within the territory of the border region. Dominant sector in the district are agriculture, while in urban areas is service sector. The main factor that caused the region is an indicator of economic inequality and population indicators. The strategies that can be used to overcome the inequality are in development of other sectors of the economy of the agricultural sector and the optimization of the center point of growth and service center region.
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Judul: Analysis Disparity Development in South Sulawesi Province
Abstrak: This research is aimed to: (a) Identify regional disparity and sectoral disparity among regencies in South Sulawesi Province, (b) Study the availability of infrastructure for all regencies in South Sulawesi Province, and (c) Study the interaction among regions in South Sulawesi Province. This research showed that South Sulawesi Province has disparity. It is mainly caused by intra regions’ disparity, i.e. the disparity among sectors in each regions explained by GDP’s growth, infrastructure expenditure ratio, education expenditure ratio, and social expenditure ratio. Those ratios may determine the disparity strength. It might be caused by the availability of infrastructures and the interaction pattern among regions caused mainly by the economic activity. The spread of economic activity tends to concentrate in agricultural sector. The unbalanced growth among regions indicated the regional disparity in South Sulawesi.
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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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