Judul: Analysis of Indonesian Wooden Furnitures Product Competitiveness in the Global Markets on Period 2017 – 2021
Abstrak: Industri wooden furnitures memiliki potensi sebagai salah satu komoditas yang dapat mendukung perekonomian Indonesia karena dinilai cukup menjanjikan dan melihat adanya peluang produksi yang semakin hari semakin bertambah. Penelitian ini bertujuan menganalisis daya saing komparatif, kompetitif, dan faktor faktor yang mempengaruhi ekspor produk wooden furnitures Indonesia di pasar dunia pada periode 2017 – 2021. Analisis data yang digunakan dalam penelitian ini terdiri dari Revealed Comparative Advantage (RCA) untuk menganalisis keunggulan komparatif, Indeks Spesialisasi Perdagangan (ISP) untuk menganalisis keunggulan kompetitif, dan Constant Market Share (CMS) untuk menganalisis faktor-faktor yang berpengaruh dalam ekspor produk wooden furnitures Indonesia di pasar dunia. Hasil penelitian menunjukkan keunggulan komparatif produk wooden furnitures Indonesia berdaya saing kuat untuk produk wooden furnitures for kitchen use, wooden furnitures for bedroom use, dan wooden furnitures other than sedangkan produk wooden furnitures for office use berdaya saing lemah. Keunggulan kompetitif produk wooden furnitures Indonesia dominan berada pada tahap pertumbuhan, kecuali produk wooden furnitures other than yang sudah berada pada tahap kematangan. Faktor yang memberikan pengaruh positif terhadap pertumbuhan ekspor produk wooden furnitures Indonesia yaitu pertumbuhan standar, komposisi komoditas, dan daya saing sedangkan faktor distribusi pasar berpengaruh negatif., The wooden furniture industry has the potential as one of the commodities that can support the Indonesian economy because it is considered quite promising and sees production opportunities that are increasing day by day. This study aims to analyze comparative competitiveness, competitiveness, and the factors that affect the export of Indonesian wooden furniture products in the world market in the period 2017 – 2021. The data analysis used in this study consists of Revealed Comparative Advantage (RCA) to analyze comparative advantage, Trade Specialization Index (ISP) to analyze competitive advantage, and Constant Market Share (CMS) to analyze the factors that influence the export of Indonesian wooden furniture products in the world market. The results show that the comparative advantage of Indonesian wooden furniture products has strong competitiveness for wooden furniture products for kitchen use, wooden furniture for bedroom use, and wooden furniture products other than wooden furniture products for office use. The competitive advantage of Indonesian wooden furniture products is dominantly at the growth stage, except for wooden furniture products other than which are already at the maturity stage. Factors that have a positive influence on the export growth of Indonesian wooden furniture products are standard growth, commodity composition, and competitiveness, while market distribution factors have a negative effect.
Keyword: wooden furnitures, competitiveness, RCA, ISP, CMS

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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