Judul: Analisis Daya Saing dan Faktor-Faktor yang Memengaruhi Ekspor Arang Tempurung Kelapa Indonesia ke Negara Tujuan Utama
Abstrak: RAHAYU SEPTIAN WULANDARI. Analisis Daya Saing dan Faktor- Faktor yang Memengaruhi Ekspor Arang Tempurung Kelapa Indonesia ke Negara Tujuan Utama. Dibimbing oleh WIWIEK RINDAYATI. Arang tempurung kelapa merupakan salah satu komoditi yang berpotensi untuk meningkatkan ekspor Indonesia dan PDB Indonesia. Tujuan dalam penelitian ini untuk menganalisis daya saing dan faktor-faktor yang memengaruhi permintaan ekspor arang tempurung kelapa. Penelitian ini menggunakan data panel dengan periode tahun 2010-2019 metode yang digunakan adalah RCA dan EPD. Hasil dalam penelitian ini bahwa arang tempurung kelapa Indonesia memiliki daya saing kompetitif yang kuat di negara tujuan utama ekspor. Dinamika ekspor yang dimiliki arang tempurung kelapa Indonesia berada di posisi Rising Star yaitu pada negara Lebanon, posisi Falling Star berada di negara Saudi Arabia, Turkey dan Netherland, Posisi Lost Opportunity berada di negara China dan posisi Retreat berada di dua negara tujuan utama yaitu Korea dan Japan. Regresi data panel menunjukan bahwa variabel GDP rill Indonesia, jarak ekonomi dan LPI Indonesia berpengaruh positif signifikan terhadap ekspor arang tempurung kelapa dan variabel GDP perkapita negara tujuan, harga ekspor dan nilai tukar riil berpengaruh negative dan signifikan., RAHAYU SEPTIAN WULANDARI. Analysis of Competitiveness and Factors Affecting the Export of Indonesian Coconut Shell Charcoal to Main Destination Countries. Supervised by WIWIEK RINDAYATI. Coconut shell charcoal is one of the commodities that has the potential to increase Indonesia's exports and Indonesia's GDP. The purpose of this research is to analyze the competitiveness and factors that influence the demand export of coconut shell charcoal. This study uses panel data with the period 2010-2019 the methods used are RCA and EPD. The results of this study indicate that Indonesian coconut shell charcoal has a strong competitive edge in the main export destination countries. The export dynamics of Indonesian coconut shell charcoal is in the Rising Star position, namely in Lebanon, the Falling Star position is in Saudi Arabia, Turkey and the Netherlands, the Lost Opportunity position is in China and the Retreat position is in the two main destination countries, namely Korea and Japan. Panel data regression shows that the variables of Indonesia's real GDP, economic distance and Indonesia's LPI have a significant positive effect on coconut shell charcoal exports and the GDP per capita variable of destination countries, export prices and real exchange rates have a negative and significant effect.
Keyword: Arang, Daya Saing, EPD, Permintaan Ekspor, RCA, Charcoal, Competitiveness, EPD, Demand Export, RCA

Judul: Comparative Analysis of Export Competitiveness of Coconut Shell Charcoal Products from ASEAN Countries in the Japanese Market
Abstrak: Jepang menempati posisi utama sebagai negara pengimpor terbesar untuk produk arang tempurung kelapa dunia (HS 440290) yang sebagian besar diimpor dari wilayah ASEAN. Sebagai negara eksportir terbesar arang tempurung kelapa dunia, nilai ekspor arang tempurung kelapa Indonesia di pasar Jepang masih menunjukkan kondisi yang fluktuatif. Hal ini menunjukkan bahwa praktik ekspor arang tempurung kelapa Indonesia di pasar Jepang belum optimal dan terdapat potensi nilai ekspor yang belum dimanfaatkan (untapped potential). Penelitian ini bertujuan untuk menganalisis posisi dan potensi daya saing ekspor arang tempurung kelapa Indonesia di pasar Jepang dikomparasikan dengan negara ASEAN lainnya. Penelitian ini menggunakan metode TBI, RCA, RSCA, EPD, Product Mapping, dan X-Model. Hasil analisis TBI menunjukkan bahwa Indonesia cenderung berperan sebagai net-exporter pada tahap kematangan ekspor bersamaan dengan Malaysia, Vietnam, dan Laos. Hasil analisis RCA dan Product Mapping menunjukkan bahwa Indonesia memiliki daya saing komparatif di pasar Jepang bersamaan dengan Laos dan Malaysia. Sementara itu, dilihat dari sisi EPD dan X-Model, arang tempurung kelapa Indonesia didominasi posisi retreat dan pasar kurang potensial., Japan occupies the main position as the largest importing country for the world's coconut shell charcoal products (HS 440290), most of which are imported from the ASEAN region. As the world's largest exporter of coconut shell charcoal, the value of Indonesia's coconut shell charcoal exports to the Japanese market is still fluctuating. This shows that the practice of exporting Indonesian coconut shell charcoal in the Japanese market is not optimal and there is an untapped potential for export value. This study aims to analyze the position and potential competitiveness of Indonesia's coconut shell charcoal exports in the Japanese market compared to other ASEAN countries. This study used TBI, RCA, RSCA, EPD, Product Mapping, and X-Model methods. The results of the TBI analysis show that Indonesia tends to act as a net-exporter at the export maturity stage along with Malaysia, Vietnam and Laos. The results of RCA and Product Mapping analysis show that Indonesia has comparative competitiveness in the Japanese market along with Laos and Malaysia. Meanwhile, from the perspective of EPD and X-Model, Indonesian coconut shell charcoal is dominated by retreat positions and a less potential market.
Keyword: posisi ekspor, potensi ekspor, produk turunan kelapa, spesialisasi ekspor

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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