Judul: Strategi Daya Saing Kelapa Sawit Mentah dan Olahan Indonesia di Pasar Internasional.
Abstrak: Tujuan dari penelitian ini adalah membandingkan daya saing kelapa sawit antara Indonesia dengan Malaysia dan menganalisis strategi yang dapat dilakukan Indonesia. Data primer diperoleh melalui wawancara dan kuesioner, data sekunder diperoleh dari literatur yang relevan. Berdasarkan hasil RSCA, kelapa sawit mentah (HS 151110) menunjukkan daya saing yang cenderung menurun dan cenderung berada dibawah Malaysia, sedangkan minyak kelapa sawit olahan (HS 151190) menunjukan daya saing yang cenderung meningkat dan berada diatas Malaysia. Berdasarkan hasil analisis IFE dan EFE, kelapa sawit Indonesia berada pada posisi yang kuat dan berdasarkan analisis IE Indonesia berada pada sel kelima, yaitu menjaga dan mempertahankan. Berdasarkan hasil analisis SWOT dan AHP menunjukan strategi daya saing kelapa sawit Indonesia di pasar internasional dipengaruhi oleh faktor keunggulan komparatif kelapa sawit (0.271), aktor yang paling berperan adalah pemerintah (0.223), tujuan yang menjadi prioritas utama dan paling ingin dicapai adalah menjadikan kelapa sawit sebagai industri pertanian yang berkelanjutan (0.386), serta alternatif strategi yang menjadi prioritas utama untuk diterapkan adalah memenuhi standar internasional dalam pelaksanaan pertanian berkelanjutan (0.295).
Keyword: AHP, daya saing, kelapa sawit, strategi

Judul: Analisis Strategi Daya Saing Kelapa Sawit Indonesia di Pasar Internasional
Abstrak: The objective of this research is to compare competitiveness of palm oil between Indonesia and Malaysia and to analysis strategy for Indonesia. Based on RSCA analysis, competitiveness of Indonesian for crude palm oil / CPO HS code (151110) from 2001 to 2012 is better than Malaysia. However, for processed palm oil HS code (151190) of Indonesian is not competitive at all. Based on the IFE and EFE analysis, Indonesia is in a strong position. While based on IE analysis, Indonesia is in the second cell that means “grows and builds”. Based on SWOT analysis, Indonesia has some strategies and then these strategies are analyzed by AHP. Based on AHP analysis, competitiveness strategy is most affected by the nature, human resource, and environment factors of Indonesia (0.260). The dominant actor in the competitiveness strategy is palm oil businessmen (0.183). The most goal to be achieved in the implementation of competitiveness strategy is to increase palm oil export (0.314), and the alternative strategy of competitiveness that should be the main priority is to optimizing palm oil plantations (0.286).
Keyword: strategy, palm oil, competitiveness, AHP

Judul: Dynamical System of Hepatitis B in Three Groups with Vaccination
Abstrak: The aim of this study is to modify the hepatitis B transmission model in three age groups involving vaccination from the model conducted by Zhoe and Zhang.The method used is to analyze the stability of the fixed point and its basic reproduction number (R_0). Performed stability analysis and numerical simulation to see population dynamics. Next, a sensitivity analysis of the parameters was carried out to see its effect on R_0. From the analysis obtained two fixed points, namely non-endemic and endemic fixed points. Non-endemic fixed points are locally asymptotically stable if R_0 <1 Meanwhile, the endemic fixed point is locally asymptotically stable if R_0 > 1. Hepatitis vaccination affects the number of susceptible population, because the more successful the vaccination, the smaller the number of susceptible populations so that the smaller the population will be infected.
Keyword: Dynamic, Hepatitis B, Vaccine, Mathematical model