Judul: Sources of growth of transportation sector and regional economic disparities in Indonesia
Abstrak: Sebagai negara kepulauan terbesar di dunia dan letak geografisnya yang sangat strategis, maka dalam menghadapi semakin liberalnya perdagangan dunia akan menuntut peningkatan daya saing produk Indonesia di pasar global. Namun keunggulan tersebut tidak akan terwujud dengan sendirinya. Satu hal yang harus diperhatikan adalah peran transportasi dalam menghubungkan pulau pulau tersebut yang mendorong konektivitas antar wilayah di Indonesia dan perlu dipahami dan dirumuskan sumber-sumber pertumbuhan dari sektor transportasi tersebut. Tujuan penelitian ini adalah menganalisis peran transportasi terhadap disparitas ekonomi wilayah di Indonesia dan perubahan strukturnya dengan menggunakan analisis interregional input-output sedangkan untuk mengetahui sumber sumber pertumbuhannya digunakan extended decomposition analysis. Wilayah yang dianalisa terdiri dari lima wilayah yaitu Sumatera, Jawa-Bali, Kalimantan, Sulawesi dan Indonesia Timur lainnya atau Rest of Indonesia (ROI).
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Judul: Dampak Pembangunan Infrastruktur dan Aglomerasi Industri terhadap Pertumbuhan Ekonomi Regional di Indonesia
Abstrak: In general, the Indonesia’s economic growth is significantly improved recently but the increase rate is different in each region which entitles to high regional disparity. One of the reasons why it occurs is because of the difference of infrastructure development in every region. Beside, the centralization of the economic activities tends to cause this issue. This study intends to analyze the effect of infrastructure development and industrial agglomeration to the regional economic growth in Indonesia. Based on productivity function of Cobb-Douglas model, the fixed effect model is used as data panel method which includes a range of data from 26 provinces in 1991-2007. The estimation in this study ensues to the influence of labor, investment, human capital, physical infrastructures (electricity and roads), industrial agglomeration, and economic crisis in 1997, while water infrastructure is not significant. Due to the estimation data result, the characteristic of production activity in Indonesia is labor-based with the labor elasticity rate of 0,27 higher than investment elasticity which is 0,10. Human capital variable holds the biggest effect with 0,34 score. Physical infrastructure (electricity and roads) is significantly influential with electricity elasticity indicates 0,33 score, higher than roads elasticity score of 0,13. In addition to this, industrial agglomeration contributes positive effect on economic growth which is indicated by 0,04 elasticity score. On the other hand, the negative coefficient score as a result of economic crisis in 1997 obstructs the economic growth. To sum up, variables which deliver positive influence for regional economic growth in Indonesia are human capital, electricity, roads, and industrial agglomeration. Furthermore, distribution of infrastructure development, education, and centralization of the economy activity should be applied in order to reduce regional disparity.
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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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