Judul: Pengaruh Persepsi dan Gaya Hidup Mahasiswa terhadap Minat Investasi Reksa Dana Syariah pada Masa Pandemi Covid-19
Abstrak: Pandemi Covid-19 berdampak pada perekonomian yang semakin terpuruk, sehingga investasi menjadi salah satu jalan keluar yang perlu mendapat perhatian sebagai salah satu alternatif sumber pemasukan dari return yang dihasilkan. Penelitian ini bertujuan untuk menganalisis pengaruh persepsi dan gaya hidup mahasiswa terhadap minat investasi reksa dana syariah pada masa pandemi Covid-19. Penelitian ini menggunakan desain cross sectional study, dengan pendekatan kuantitatif dengan metode analisis SEM-PLS. Populasi penelitian ini adalah mahasiswa program S1 seluruh Indonesia. Responden dipilih secara voluntary sampling dengan jumlah responden sebanyak 100 responden. Mahasiswa muslim memiliki persepsi yang lebih baik dan minat investasi yang lebih tinggi terhadap reksa dana syariah, serta memiliki gaya hidup hedonis dibandingkan mahasiswa non-muslim. Kemudian, mahasiswa dengan persepsi baik terhadap reksa dana syariah dan memiliki gaya hidup hemat (frugal) berpengaruh meningkatkan minat investasi reksa dana syariah., The Covid-19 pandemic had an impact on the economy which is getting worse, so that investment is one way out that needs attention as an alternative source of income from the returns. This research aims to analyze the influence of undergraduate student perception and lifestyle towards investment interest on sharia mutual fund during the Covid-19 pandemic. This research used cross sectional study, with a quantitative approach. The population of this study were undergraduate students throughout Indonesia. Respondents were selected by voluntary sampling with a total of 100 respondents. Muslim students have a better perception and higher investment interest on sharia mutual fund, with hedonis lifestyle than non-muslim students. Then, students with a good perception of sharia mutual fund and frugal lifestyle have an effect on increase investment interest on sharia mutual fund
Keyword: Covid-19, investment interest, lifestyle, perception, sharia mutual fund

Judul: The Influence of Undergraduate Student Perception and Lifestyle towards Investment Interest on Sharia Mutual Fund during The Covid-19 Pandemic
Abstrak: Pandemi Covid-19 berdampak pada perekonomian yang semakin terpuruk, sehingga investasi menjadi salah satu jalan keluar yang perlu mendapat perhatian sebagai salah satu alternatif sumber pemasukan dari return yang dihasilkan. Penelitian ini bertujuan untuk menganalisis pengaruh persepsi dan gaya hidup mahasiswa terhadap minat investasi reksa dana syariah pada masa pandemi Covid-19. Penelitian ini menggunakan desain cross sectional study, dengan pendekatan kuantitatif dengan metode analisis SEM-PLS. Populasi penelitian ini adalah mahasiswa program S1 seluruh Indonesia. Responden dipilih secara voluntary sampling dengan jumlah responden sebanyak 100 responden. Mahasiswa muslim memiliki persepsi yang lebih baik dan minat investasi yang lebih tinggi terhadap reksa dana syariah, serta memiliki gaya hidup hedonis dibandingkan mahasiswa non-muslim. Kemudian, mahasiswa dengan persepsi baik terhadap reksa dana syariah dan memiliki gaya hidup hemat (frugal) berpengaruh meningkatkan minat investasi reksa dana syariah., The Covid-19 pandemic had an impact on the economy which is getting worse, so that investment is one way out that needs attention as an alternative source of income from the returns. This research aims to analyze the influence of undergraduate student perception and lifestyle towards investment interest on sharia mutual fund during the Covid-19 pandemic. This research used cross sectional study, with a quantitative approach. The population of this study were undergraduate students throughout Indonesia. Respondents were selected by voluntary sampling with a total of 100 respondents. Muslim students have a better perception and higher investment interest on sharia mutual fund, with hedonis lifestyle than non-muslim students. Then, students with a good perception of sharia mutual fund and frugal lifestyle have an effect on increase investment interest on sharia mutual fund.
Keyword: Covid-19, investment interest, lifestyle, perception, sharia mutual fund

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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