Judul: Transportation infrastructure, interregional linkages and economic growth of the Jakarta, Bogor, Depok, Tangerang and Bekasi Region
Abstrak: Infrastructure is a requisite for a regional economic growth through economic and non - economic activi ties. In particular, a transportation infrastructure in a region, among others, provides a valuable contribution towards the economic of such regional as well as of its neighborhood. This research aims to analyze the impact of the transport ation infrast ructure ( highway, toll, and rail track) on the regional economic growth as well as on its neighborhood. Moreover, this research also intends to compare the impact of several transporta tion infrastructure suc h as highway, toll, railway , and their combinatio n on economic regional. The observed regional in this research are Jakarta, Bogor, Depok, Tangerang, Bekasi often called JABODETABEK area . The construction of transportation in regional is a backbone for formation of a networking in JABODETABEK region. The time series data of four economic sectors of the region in the period 1990 – 2006, is estimate on the Two Stages Least Square (2SLS) research model, then followed by a simulation using SIM N LIN procedure. The research model is developed using t ransmission mechanism framework that shows a sequent of transportation infrastructure investment. Firstly, such investment will affect the number of economic units, then followed by its impact on the production volume of four observed sectors, and finally on the regional economic growth and its neighborhood’s.
Keyword: Transportation infrastructure, Interregional linkages, Economic growth, JABODETABEK area

Judul: Pengaruh Infrastruktur terhadap Pertumbuhan Ekonomi dan Kebijakan Pembangunan Jalan di Kabupaten Bogor
Abstrak: Infrastructure has a very important role on economic growth. The purpose of this research is for describing economic and infrastructure growth, analyzing the effect of infrastructure on economic growth and analyzing road policy priority in Bogor Regency. Secondary data is acquired from the data that has been used since 1989 to 2012, while primary data is acquired from interview and questionnaire. The variable used are Regional Gross Domestic Product (millions of Rupiahs), the number of health center (unit), the amount of fresh water channeled (m³) and road length (km). Results obtained by using the regression that the health center infrastructure, water and roads have a positive and significant effect on economic growth. Results from the AHP method shows that first target priority is raising employment by adding road length, the second priority is increasing economic growth by adding road facility and third priority is reducing poverty by adding the road length.
Keyword: Economic Growth., OLS, Infrastructure, AHP

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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