Judul: Determinants of foreign direct investment on agribusiness  sectors In Indonesia
Abstrak: Pertumbuhan sektor agribisnis diharapkan mampu meningkatkan lapangan kerja dan mempercepat pertumubuhan ekonomi Indonesia. Penanaman Modal Asing (PMA) diharapkan mampu mempercepat pertumbuhan sektor agrbisnis. Indikator terbaik untuk menggambarkan pertumbuhan ekonomi yaitu dengan menggunakan Produk Domestik Bruto (PDB). Penelitian ini bertujuan untuk menganalisisi faktor-faktor yang mempengaruhi PMA pada sektor agribisnis dengan menguji fakta-fakta pada data panel. Untuk menghindari ambiguitas dalam analisis maka perlu dilakukan analisis hubungan antara PMA dan PDB. Analisis Granger menunjukkan bahwa PMA dan PDB memiliki hubungan dua arah. Oleh sebab itu, PDB dapat digunakan sebagai faktor yang berpengaruh terhadap PMA. Analisis model Random Effect Model (REM) menunjukkan bahwa PDB, nilai impor, dan nilai ekspor secara signifikan berpengaruh positif terhadap PMA, sedangkan kurs secara signifikan berpengaruh negatif terhadap PMA., The growth of agribusiness sector is expected to increase employment and accelerate the economic growth of Indonesia. FDI is expected to expedite the growth of agribusiness sector. The best indicator to represent economic growth is use Gross Domestic Product (GDP).This study examines panel data evidence to study the determinants of Foreign Direct Investment (FDI) on agribusiness sector. Avoid the ambiguous predictions, this study analysed the relationship between FDI and GDP using Granger test. This study find that FDI and GDP have twoway relationships. Hence, GDP can be determinant of foreign direct investment. Random Effect Model (REM) shown that GDP, import values and export values have significantly positive influences on FDI. Whereas exchange rate has negative significantly influence on FDI.
Keyword: Agribisnis, PMA, PDB, Analisis Granger, REM

Judul: Determinants of Foreign Direct Investment (FDI) and its impact on Gross Domestic Product (GDP) in Indonesia.
Abstrak: An important component in the economic development of a country is investment. One form of investment that important for developing countries is Foreign Direct Investment (FDI). FDI can increase accumulation of domestic capital. Besides, FDI is important for technology transfer from developed to developing countries. Indonesian Government made several efforts to attract FDI by improving the regulation of investment. However, the achievements of Indonesia in attracting foreign investors is still low compared to other ASEAN countries. Therefore, it is important to know what determinants of FDI that affect FDI inflow in Indonesia. The impact of FDI on the economy of destination country (host country) is actually still being debated. The impact could be positive or negative depend on the condition of host countries. The purposes of this study are to analyze the determinants of FDI inflows in Indonesia and to analyze the impact of FDI to Gross Domestic Product (GDP) in Indonesia. This study uses secondary data with quarterly period from 1997:1 to 2011:4, obtained from BKPM (Indonesian Investment Coordinating Board), BPS (Statistics Indonesia) and BI (Bank Indonesia). The data include FDI, GDP, real wages, the central government gross fixed capital formation, openness, real exchange rate, real interest rates, Domestic Direct Investment (DDI), government spending and the inflation rate. The analytical methods applied include descriptive analysis method and the simultaneous equations method (2SLS). The variables used as determinants of FDI are GDP, real wages, the central government gross fixed capital formation as a proxy for infrastructure, openness, real exchange rates and real interest rates. The impact of FDI to GDP is estimated by incorporating other variables that also affect the GDP; Domestic Direct Investment (DDI), government spending, openness and the inflation rate. 2SLS results indicate that determinant factors that affect the FDI inflow in Indonesia are GDP, labor wages, infrastructure and openness. Increase in GDP meaning an increase in market size is the dominant factor in attracting FDI inflow in Indonesia. The result also shows that FDI has positive impact on GDP in Indonesia. Some policy implications are suggested to Indonesian Government in order to attract FDI inflows in Indonesia are: (1) increasing economic growth; (2) labor policies particularly wage policy, so Indonesia can compete with other countries in terms of labor cost; (3) improving the infrastructure conditon.
Keyword: FDI, GDP, 2SLS

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.
Keyword: