Judul: Analisis Daya Saing Ekspor Produk Pulp dan Kertas  Indonesia di Pasar Internasional Periode 2012-2020
Abstrak: Industri pulp dan kertas merupakan salah satu industri yang sangat penting di Indonesia karena produknya sering digunakan dalam keseharian. Selain bermanfaat untuk keseharian industri ini turut menyumbang devisa negara lewat ekspor produknya ke pasar internasional. Penelitian ini bertujuan untuk menganalisis daya saing komparatif dan kompetitif serta faktor-faktor yang mempengaruhi ekspor produk pulp dan kertas Indonesia di pasar internasional dalam rentang waktu 2012-2020. Penelitian ini melanjutkan dari penelitian sebelumnya oleh Wulandari (2013), dengan menambahkan analisis distribusi pasar. Analisis data yang digunakan pada penelitian ini adalah analisis keunggulan komparatif dengan metode Revealed Comparative Advantage (RCA), analisis keunggulan kompetitif dengan metode Indeks Spesialisasi Perdagangan (ISP), dan analisis faktor-faktor yang mempengaruhi daya saing produk pulp dan kertas dengan metode Analisis Constant Market Share (CMS). Produk pulp dan kertas indonesia di pasar internasional pada periode 2012-2020 memiliki keunggulan komparatif yang baik, hanya produk HS 4706 dan HS 4804 keunggulan komparatifnya lemah. Hal ini juga sejalan dengan keunggulan kompetitifnya dimana hanya produk HS 4706 dan HS 4804 yang masih ditahap proses pengenalan, untuk produk yang lain di tahap pertumbuhan dan kematangan. Sedangkan faktor yang berkonstribusi positif dalam pertumbuhan ekspor produk pulp dan kertas indonesia di pasar internasional adalah daya saing dan distribusi pasar, sedangkan pertumbuhan standar dan komposisi komoditas berkontribusi negatif.
Keyword: paper, CMS, competitiveness, SP, RCA

Judul: Analisis daya saing komoditas pulp dan kertas Indonesia di negara importir utama
Abstrak: Indonesia has a great potential in the production of pulp and paper because Indonesia has a fairy extensive forest and good tropical climate that makes the plants can growing faster than countries in the world. Enactment of ecolabelling policy on Indonesian pulp and paper can be increase comparative advantage of Indonesian pulp and paper in international market. The objective of this research are to analyze the pulp and paper exports development, and to analyze the competitive position of Indonesia pulp and paper in the state main importer. The competitiveness of Indonesian pulp and paper in the state main importer were analyzed by using Revealed Comparative Advantage method and Constant Market Share Analysis. Based on the analysis of RCA and CMSA are concluded that Indonesian pulp and paper have a comparative advantage in all main importer countries, but not all increased competitiveness in 2000-2012. Competitiveness of Indonesian pulp increased in the market of South Korea, India, Japan, Taiwan, and the otherwise competitiveness of Indonesian pulp decreased in the Chinese market. Competitiveness of Indonesian paper increased in the market of Japan, Malaysia, United States, and the otherwise competitiveness of Indonesian paper decreased in the market of Australia and China.
Keyword: Bogor Agricultural University (IPB), CMSA, RCA, pulp and paper, competitiveness

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