Judul: Analisis Perkembangan Daya Saing Alas Kaki Indonesia di China Periode 2005 - 2015.
Abstrak: Sektor non migas memiliki peran yang sangat penting dalam meningkatkan nilai ekspor Indonesia. Alas kaki merupakan salah satu komoditas unggulan ekspor Indonesia. Adanya kerjasama ACFTA diharapkan dapat meningkatkan pangsa pasar produk sepatu olahraga dan sepatu casual Indonesia di China. Penelitian ini bertujuan untuk menganalisis dayasaing alas kaki Indonesia di China selama periode 2005 sampai 2015. Penelitian ini juga menggunakan analisis Reveleated Comparative Advantage, Intra-Industry Trade, Porter’s Diamond dan Trade Balance. Hasil analisis RCA menunjukan bahwa berdaya saing di China dan model porter’s diamond menunjukan bahwa dayasaing kompetitif alas kaki yang kuat. Hasil IIT menunjukan bahwa produk sepatu casual cenderung memiliki integrasi sangat kuat sedangkan produk sepatu olahraga cenderung memiliki integrasi kuat. Hasil Trade Balance menunjukan bahwa produk sepatu casual maupun produk sepatu olahraga cenderung memiliki nilai impor yang lebih besar dibandingkan nilai ekspor dari tahun ke tahun.
Keyword: Alas kaki, IIT, Porter’s Diamond, RCA, Trade Balance

Judul: Analisis Dayasaing dan Faktor-Faktor yang Memengaruhi Aliran Ekspor Alas Kaki Indonesia di Kawasan ASEAN dan China
Abstrak: Footwear is one of the leading export commodities of Indonesia. Agreement of the ASEAN-China Free Trade Area (ACFTA) is expected to improve the competitiveness of Indonesian footwear in Southeast Asia and China markets. The purpose of this research is to analyze the competitiveness of Indonesian footwear and analyze the factors affecting Indonesian footwear exports to China and Southeast Asia countries. This research use a Gravity Model with panel data method, covering five countries export destination from 2000 to 2011. Independent variables used are GDP of Indonesia, GDP of the destination countries, the economic distances, the real exchange rate of rupiah and dummy implementation of ACFTA. In addition, this research also uses Revealed Comparative Advantages (RCA) method to analyze the competitiveness of Indonesian footwear. The value of RCA shows that Indonesian footwear has high competitiveness both in the markets of Southeast Asia as well as world markets in total. Indonesian footwear exports flow is influenced by real GDP of Indonesia, nominal GDP of the destination country, and the real exchange rate of rupiah
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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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