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: 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: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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