Judul: Analisis Daya Saing dan Dampak Ekspor Perabotan Indonesia ke CARICOM
Abstrak: Indonesia tidak luput dari dampak guncangan ekonomi akibat pandemi. Perabotan adalah salah satu produk unggulan komoditas hasil industri di Indonesia. Ketergantungan pasar ekspor pada negara tujuan utama (tradisional) mendorong Indonesia melakukan diversifikasi pasar. Salah satu upaya diversifikasi adalah dengan menjajaki kemungkinan perundingan perdagangan dengan CARICOM. Penelitian ini bertujuan untuk menganalisis daya saing, dinamika dan determinan ekspor perabotan Indonesia ke CARICOM. Metode penelitian yang digunakan dalam penelitian ini adalah RCA, EPD, X-Model, dan regresi data panel. Hasil analisis RCA menunjukkan perabotan Indonesia berdaya saing tinggi. Hasil analisis EPD menunjukkan pengembangan pasar rising star dan lost opportunity. Hasil analisis X-Model menunjukkan pengembangan pangsa pasar optimis dan potensial. Hasil analisis regresi data panel menunjukkan bahwa variabel yang berpengaruh positif dan signifikan yaitu GDP riil negara tujuan, nilai tukar dan RCA. Variabel yang berpengaruh negatif dan signifikan yaitu populasi dan dummy Covid-19. Sementara variabel yang tidak signifikan yakni harga ekspor., Indonesia has not escaped the impact of the pandemic. Furniture is one of top commodity products in Indonesia. The dependence of the export market on the main (traditional) destination countries encourages Indonesia to diversify its markets. One of Indonesia’s efforts to diversify the export market is by exploring the possibility of trade negotiations with CARICOM. This study aims to analyze the competitiveness, dynamics, and determinants of furniture from Indonesia to CARICOM. The research methods used in this study are RCA, EPD, X-Model, and panel data regression. The results of RCA analysis show that Indonesian furniture is highly competitive. The results of the EPD analysis show the development of the rising star market and lost opportunity. The results of the X-Model analysis show the development of optimistic market share and potential market share. Panel data regression analysis results show that the positive and significant influential variables are the real GDP of the target country, exchange rate, and RCA. The negative and significant influencing variables are population and dummy Covid-19. While the non-significant variables are export prices.
Keyword: CARICOM, diversification, export, furniture, panel data regression

Judul: Daya Saing dan Faktor-Faktor yang Memengaruhi Ekspor Furnitur Kayu Indonesia ke Negara Tujuan Utama
Abstrak: Komoditas furnitur kayu adalah salah satu komoditas yang potensial untuk dikembangkan di Indonesia. Penelitian ini ditujukan untuk menganalisis daya saing furnitur kayu Indonesia dengan kode HS 940360 ke negara tujuan utama yang terdiri dari sembilan negara tujuan dalam periode tahun 2012 hingga 2019. RCA, EPD, dan Model X serta regresi data panel digunakan sebagai metode analisis pada penelitian ini. Berdasarkan penelitian, diperoleh hasil bahwa furnitur kayu Indonesia memiliki daya saing komparatif yang kuat di seluruh negara tujuan ekspor. Hasil EPD menggambarkan posisi furnitur kayu Indonesia di sembilan negara tujuan utama yakni, rising star, falling star, dan retreat. Hasil estimasi regresi data panel menunjukkan bahwa variabel GDP negara tujuan, GDP Indonesia, harga ekspor, nilai tukar riil, dan nilai RCA berpengaruh signfikan terhadap ekspor furnitur kayu Indonesia ke sembilan negara tujuan. Sementara, variabel pertumbuhan populasi tidak berpengaruh signifikan terhadap ekspor furnitur kayu Indonesia di sembilan negara tujuan., The Indonesian wooden furniture commodity is a potential commodity to be developed. This research study is conducted to analyze the competitiveness of Indonesian wooden furniture with HS code 940360 in nine main destination countries from period of 2012 to 2019. RCA, EPD, X Model and panel data regression are used as the analytical methods. The results showed that Indonesian wooden furniture has strong comparative competitiveness in nine export destination countries. The EPD results show that Indonesia’s position in nine destination countries is varied, namely rising star, falling star and retreat. The panel data regression’s results indicate that the variables of destination country’s GDP, Indonesian GDP, export prices, real exchange rates, and RCA values affect the export of Indonesian wood furniture to the nine main export destination countries significantly. Meanwhile, the population growth variable has no significant effect on the export of Indonesian wooden furniture to the nine destination countries.
Keyword: EPD, panel data, RCA, wooden furniture, X Model

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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