Judul: Pengaruh Produktivitas Tenaga Kerja Terhadap Pertumbuhan Ekonomi di Negara ASEAN
Abstrak: Pertumbuhan ekonomi merupakan salah satu indikator yang sangat penting untuk melihat kinerja perekonomian suatu negara. Salah satu yang mendorong pertumbuhan ekonomi adalah produktivitas tenaga kerja. ASEAN merupakan organisasi geopolitik dan ekonomi yang ada di Asia Tenggara yang bertujuan meningkatkan pertumbuhan ekonomi, kemajuan social, dan pengembangan kebudayaan negara anggotanya. ASEAN memiliki peran penting tidak hanya letaknya yang startegis, ASEAN juga tengah berkembang pesat menjadi pusat ekonomi secara regional di dunia. Tujuan penelitian ini adalah untuk menganalisis pengaruh produktivitas tenaga kerja terhadap pertumbuhan ekonomi di negara-negara ASEAN dengan menggunakan data cross section 10 negara ASEAN dan time series waktu 10 tahun dari tahun 2010 hingga 2019. Hasil penelitian menunjukkan bahwa variabel labor productivity, foreign direct investment (FDI) dan human capital berpengaruh signifikan dan positif terhadap pertumbuhan ekonomi. Unemployment tidak signifikan terhadap pertumbuhan ekonomi di negara-negara ASEAN., Economic growth is one of the most important indicators to see the economic performance of a country. One of the factors that drive economic growth is labor productivity. ASEAN is a geopolitical and economic organization in Southeast Asia that aims to increase economic growth, social progress, and cultural development of its member countries, ASEAN is also rapidly developing into a regional economic center in the world. The purpose of this study is to analyze the effect of labor productivity on ASEAN countries using croos section data of 10 ASEAN countries and a 10 year time series from 2010 to 2019. The result show that the variables of labor productivity, foreign direct investment (FDI), and human capital have a significant and positive effect on economic growth. Unemployment is not significant to economic growth in ASEAN counstries.
Keyword: ASEAN, labor productivity, panel data, economic growth

Judul: The Effect of Logistics Performance on Economic Growth in ASEAN Countries
Abstrak: The global market is one of the drivers of economic growth through export activities within a country. Meanwhile, the logistics sector plays an important role in global market activities. ASEAN is one of the countries that has the potential to develop logistics performance in its country. The purpose of this study is to determine the effect of logistics performance on economic growth in ASEAN for the 2010-2019 period and to encourage planning for ASEAN as a food barn. In this study, the independent variables used are investment, labor, general government consumption expenditure, and LPI. The study used secondary data and processed using panel data regression method. The results showed that all independent variables used in this study except for labor had a significant positive effect on economic growth in ASEAN. Meanwhile, the labor has a significant negative influence on ASEAN economic growth., Pasar global merupakan salah satu pendorong pertumbuhan ekonomi melalui kegiatan ekspor dalam suatu negara. Sementara itu, sektor logistik sangat berperan penting dalam aktivitas pasar global. ASEAN merupakan salah satu negara yang memiliki potensi dalam mengembangkan kinerja logistik di negaranya. Tujuan dari penelitian ini yaitu untuk mengetahui pengaruh kinerja logistik terhadap pertumbuhan ekonomi di ASEAN periode tahun 2010-2019 serta mendorong perencanaan ASEAN sebagai lumbung pangan. Pada penelitian ini, variabel independen yang digunakan yaitu investasi, tenaga kerja, pengeluaran umum konsumsi pemerintah, dan LPI. Penelitian menggunakan data sekunder dan diolah menggunakan metode regresi data panel. Hasil penelitian menunjukkan bahwa seluruh variabel independen yang digunakan pada penelitian ini kecuali tenaga kerja berpengaruh signifikan positif terhadap pertumbuhan ekonomi di ASEAN. Sementara itu, tenaga kerja memiliki pengaruh yang signifikan negatif terhadap pertumbuhan ekonomi ASEAN.
Keyword: ASEAN, Logistics, Economic Growth, Panel Data

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: