Judul: Competitiveness Analysis and Strategy of Indonesia Processed Tuna in the International Market.
Abstrak: Tuna Indonesia mostly exported in fresh and frozen (55%), and 45% in processed tuna. It is therefore necessary to study the competitiveness of processed tuna and tuna preparations Indonesia's development strategy is competitive. Research objectives are 1) knowing the competitiveness of processed and fresh tuna products compared to competing countries, 2) identify and analyze the factors of competing strength of the tuna processing industry, 3) formulate strategic priorities Indonesia tuna industry development. The method used is the Revealed Comparative Advantage (RCA) and the analysis of the Competitive Profile Matrix Analysis, In the year 2006 to 2010, Indonesia has a fresh tuna RCA index between 4.56 to 8.18, tuna frozen at 0.49 to 1, 43 and processed tuna fish ranged from 1.25 to 2.68. This means that fresh tuna and tuna preparations Indonesia has a comparative advantage very well. However, when compared to competing countries, the comparative advantage of fresh tuna Indonesia is still very low. Frozen tuna Indonesia has a comparative advantage and yet still very inferior to competitor countries. Based on the analysis of the competitive profile, three factors of production and marketing of highly influential on the competitiveness of tuna fish are 1) the quality of the resulting processed tuna fish with a weight of 0.143. 2) tariff and non tariff barriers with a weight of 0.114. And 3) Development and Promotion Intellegence market with the weight of 0.110. As for the human and institutional factors, factors which have an important role in increasing competitiveness is 1) The Role of Government in the development of the tuna processing industry with a weight of 0.147. 2) Availability of human resources capable of handling quality with weights 0.135 and 3) the role of government in the prevention and handling of illegal fishing by weight of 0.130. Based on the analysis of RCA analysis and matrix analysis of the competitive profiles of priority strategies that can be done to improve the competitiveness of Indonesia's processed tuna to the factors of production and marketing are as follows 1) Improve the quality of processed tuna Indonesia; 2) Encourage overcome tariff and non tariff barriers; 3) enhance market development and promotion Intellegence, The strategic priorities for the human and institutional factors are 1) Increase the Role of Government in the development of the tuna processing industry, 2) Improving kapassitas human resources capable of handling quality 3) Eradication and control of illegal fishing
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Judul: Competitiveness Analysis of Indonesia’s Tuna Export in International Market
Abstrak: Ikan tuna merupakan salah satu komoditas ekspor unggulan Indonesia dan memiliki potensi yang besar di Indonesia. Meskipun memiliki potensi yang besar, Indonesia hanya menempati urutan kedua sebagai negara produsen ikan tuna di ASEAN. Penelitian ini bertujuan untuk (1) mengkaji struktur pasar tuna Indonesia di pasar internasional, (2) menganalisis daya saing ekspor tuna Indonesia di pasar internasional, serta (3) menganalisis faktor-faktor yang memengaruhi ekspor tuna Indonesia di pasar internasional. Metode penelitian yang digunakan adalah metode analisis data sekunder, sedangkan metode analisis data yang digunakan yaitu Herfindahl Hirschman Index (HHI) dan Concentration Ratio (CR4), Revealed Comparative Advantage (RCA) dan Export Product Dynamic (EPD) serta regresi data panel. Hasil analisis HHI dan CR4 menyatakan bahwa stuktur pasar komoditas tuna segar dan tuna beku adalah pasar persaingan sempurna, sementara struktur pasar pada tuna olahan adalah pasar oligopoli. Analisis RCA menunjukkan bahwa tuna segar, beku dan olahan Indonesia memiliki daya saing kuat di negara tujuan ekspor Amerika dan Jepang. Analisis EPD menerangkan bahwa Indonesia berada pada posisi rising star di pasar Amerika, Perancis dan Bulgaria pada komoditas ikan tuna olahan. Analisis regresi data panel membuktikan bahwa variabel yang memengaruhi nilai ekspor ikan tuna Indonesia di pasar tujuan ekspor adalah harga ekspor ikan tuna.
Keyword: competitiveness, exports, market structure, panel data regression, tuna fish

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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