Judul: Dampak Leverage terhadap Profitabilitas pada Perusahaan Bakrie Group
Abstrak: Perusahaan yang tergabung dalam Bakrie Group banyak menggunakan dana eksternal yaitu berupa utang. Pendanaan dengan utang dikatakan bahwa perusahaan tersebut telah melakukan financial leverage. Perusahaan yang memiliki tingkat penggunaan utang yang tinggi pada dasarnya berpotensi meraup keuntungan yang besar sehingga dapat menyebabkan perusahaan menjadi berkembang lebih baik, akan tetapi semakin tinggi tingkat leverage keuangan maka semakin banyak utang yang digunakan sehingga kas perusahaan lebih banyak untuk membayar utang. Tujuan penelitian ini adalah untuk menganalisis pengaruh leverage terhadap profitabilitas baik secara simultan maupun parsial, yang direpresentasikan dengan variabel debt to equity ratio (DER), debt to asset ratio (DAR) , dan return on equity (ROE). Metode analisis yang digunakan dalam penelitian ini adalah regresi linier berganda, dengan menggunakan SPSS 23. Hasil penelitian menunjukan bahwa secara simultan dan parsial variabel leverage (DER dan DAR) berpengaruh signifikan terhadap profitabilitas (ROE).
Keyword: financial leverage, profitabilitas, regresi berganda

Judul: Pengaruh Financial Leverage Terhadap Profitabilitas Bank BUMN
Abstrak: Statistik utang luar negeri Indonesia menunjukkan sektor jasa keuangan dan asuransi merupakan sektor ekonomi dengan utang terbesar hingga tahun 2018 dengan Bank BUMN menjadi bagian dari sektor tersebut yang memiliki peningkatan utang paling tinggi dari subsektor perbankan. Namun berdasarkan kontribusi terhadap PDB, pada tahun 2018 sektor ini hanya berada di posisi ketujuh dengan presentase 4,15%. Penelitian ini bertujuan untuk meninjau kembali mengenai teori kaitan antara utang dan profitabilitas. Objek penelitian terbatas pada Bank BUMN yang terdaftar di BEI. Data yang digunakan merupakan data sekunder yang didapatkan dari laporan keuangan perusahaan selama periode 2009 sampai 2019 serta studi literatur. Metode yang digunakan dalam penelitian yaitu analisis regresi data panel dengan Debt to Asset Ratio (DAR) dan Debt to Equity Ratio (DER) sebagai variabel independen serta Return on Asset (ROA), Return on Equity (ROE), Net interest Margin (NIM), dan Beban Operasional terhadap Pendapatan Operasional (BOPO) sebagai variabel dependen. Hasil penelitian menunjukkan bahwa DAR dan DER (leverage) berpengaruh terhadap ROA, ROE, NIM dan BOPO (profitabilitas).
Keyword: financial leverage, profitabilitas, regresi data panel

Judul: Thermal Characteristics and Dynamics of Tropical Cyclone over Western North Pacific Ocean: A Case Study of Typhoon Songda (Chedeng) 2011
Abstrak: The frequent occasion of Tropical Cyclone (TC) over Western North Pacific (WNP) Ocean lies from 10˚N to 26˚N and 121˚E to 170˚E. Sources of TC development come from warm ocean temperature where latent heat is released during condensation processes and subsequently concentrated in the boundary layer. Relative humidity at 850-700 hPa is responsible to produce the most intense storm. Meanwhile, weak vertical wind shear between 850-200 hPa is one of the dynamical factors that lead to the development of TC. Pressure level of 850-200 hPa is chosen to minimize the thermodynamic effect in the lower troposphere. Typhoon Songda (Chedeng in the Philippines) or TSC lasted from May 18th to 30th, 2011 and strengthened into powerful Super Typhoon stage between May 24th and 27th. Long curving track and the exhibition of all sequences of TC life cycle, TSC is then considered as an ideal case of TC. The objective of the study with case of TSC is to investigate the role of thermal characteristics and dynamics on TC intensity. The research is carried out by using Advanced Research of Weather Research and Forecasting model (WRF ARW model) version 3.3. Two domains are employed in the model. The first domain situate from 02˚N to 40˚N and 118˚E to 149˚E and cover spatial resolution () of 33.1 km. The second domain situate from 09˚N to 27˚N and 119˚E to 132˚E with of 11 km. Timestep of the model () is 120 seconds. The model is supported by the following physical parameterization, i.e., Yonsei University Scheme (YSU) in the boundary layer, Kain-Fritsch scheme (KF) in the cumulus, and WRF Single-Moment 3-class scheme in the microphysics. Initial meteorological condition prior to the formation of the cyclone is generated using WRF ARW standard-release model. Sensitivity of the model output is obtained from a selected single-parameter change scenarios, namely, 10 % to 20 % decrease and increase of wind shear initial data at 850-200 hPa, and by 10 % to 20 % decrease of relative humidity initial data at 850-700 hPa. The result showed that the negative correlations between wind shear and intensity are found in wind shear scenarios. Wind shears of 10 ms-1 which lead to strengthening of the wind intensity in the early period of Typhoon development are found in wind shear scenarios. The effect of wind shear changes on wind intensity is statistically significant in the 20 % wind shear scenarios. During mature stage, weak wind intensity occurred when wind shear increase as given in the WRF standard-release and the 20 % decreasing scenario. Different situation is found in the 20 % increasing scenario where wind shear tend to weak and lead to strong wind intensity at this stage. Meanwhile, the reduction of moisture supply at 850-700 hPa resulting from 20 % decreasing relative humidity play a major role in the weakening of wind intensity and reduces mechanical energy of the cycle process as much as 300 J kg-1.
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