Judul: Effect of Black Campaign for Palm Oil (CPO) on Indonesian CPO Export Volume to Export Destination Countries
Abstrak: Kelapa sawit merupakan salah satu sub-sektor perkebunan Indonesia yang menjadi komoditas andalan ekspor non migas dengan bentuk produk olahan utamanya yaitu minyak sawit mentah atau Crude Palm Oil (CPO). Pertumbuhan produksi CPO Indonesia meningkat setiap tahunnya. Munculnya black campaign membuat ekspor CPO Indonesia menjadi terhambat. Penelitian ini bertujuan untuk menganalisis perkembangan volume ekspor CPO Indonesia dan menganalisis pengaruh black campaign CPO terhadap volume ekspor CPO Indonesia. Metode yang digunakan adalah analisis regresi data panel dalam kurun waktu 2000-2019 ke tiga negara tujuan ekspor yaitu Belanda, Spanyol, dan Italia. Hasil analisis regresi menunjukkan bahwa perkembangan volume ekspor CPO Indonesia berfluktuatif dan cenderung menurun. Kemudian variabel harga ekspor CPO Indonesia ke negara tujuan, harga internasional minyak kedelai, GDP riil per kapita negara importir, nilai tukar riil rupiah dan black campaign berpengaruh signifikan terhadap volume ekspor CPO Indonesia. Sedangkan variabel harga internasional CPO di pasar dunia tidak berpengaruh signifikan terhadap volume ekspor CPO Indonesia., Palm oil in the form of Crude Palm Oil, is one of Indonesian main export commodities. Indonesian CPO production growth is increasing every year, and yet the emergence of a black campaign has hampered Indonesia's CPO exports. This study aims to analyze the dynamic of Indonesian CPO export volume and analyze the effect of the CPO black campaign on Indonesian CPO export volume. Panel data regression analysis for the period of 2000-2019 to three export destination countries, The Netherlands, Spain, and Italy, shows that the development of Indonesian CPO export volume fluctuates and tends to decline. Then variables of Indonesian CPO export prices to destination countries, soybean oil international prices, real GDP per capita of importing countries, real rupiah exchange rates and black campaigns, have a significant effect on Indonesia's CPO export volume. Meanwhile, the international price of CPO in the world market has no significant effect on the volume of Indonesian CPO exports.
Keyword: Black Campaign, CPO, Export Demand, Fixed Effect Model

Judul: Analisis Dampak Black Campaign Minyak Kelapa Sawit (CPO) Terhadap Volume Ekspor CPO Indonesia
Abstrak: Indonesia is the biggest producer and exporters of Crude Palm Oil (CPO) in the world. Palm oil is a vegetable oil with the highest consumption rates in the world. However, in international trade, consumers who choose to buy CPO are sensitive to negative issues or black campaign. The purpose of this study is to analyze the development of Indonesia's CPO export volume demand and analyze the impact of CPO black campaign against Indonesian CPO export volume by using secondary data from 1996 to 2011 in the form of panel data. The results showed that the volume of Indonesian CPO exports to United States, Netherlands, England and Germany has fluctuated. Regression analysis showed that the real exchange rate of rupiah, real GDP per capita of the importing country, international soybean price, CPO export price and black campaign affect the volume of Indonesia's CPO export demand. While the international CPO prices do not affect the volume of CPO export to destination countries
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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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