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All Journal Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Jurnal Bina Bangsa Ekonomika
Asep
Universitas Sultan Ageng Tirtayasa
Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Industrial & Manufacturing Engineering

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PENGARUH RASIO PROFITABILITAS, LIKUIDITAS, DEBT EQUITY RATIO DAN FREE CASH FLOW TERHADAP RETURN INVESTASI: Studi Empiris Pada Perusahaan Manufaktur Yang Listing Di BEI Kurniasih Dwi Astuti; Asep
Jurnal Bina Bangsa Ekonomika Vol. 13 No. 2 (2020): Jurnal Bina Bangsa Ekonomika (JBBE)
Publisher : LP2M Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (272.144 KB) | DOI: 10.46306/jbbe.v13i2.56

Abstract

Tujuan penelitian ini adalah untuk menganalisis pengaruh Rasio Profitabilitas (ROE), Likuiditas (CR), Debt Equity Ratio (DER) dan Arus Kas Bebas terhadap hasil investasi. Pengujian hipotesis menggunakan model good of fit (Goodness of Fit Model) terhadap 23 produsen dilakukan dengan metode purposive sampling yang terdaftar di BEI, melalui data sekunder pada laporan keuangan masing-masing perusahaan. Periode penelitian 2018-2019. Hasil penelitian menunjukkan bahwa rasio profitabilitas yang diukur dengan Return On Equity, Rasio Lancar Likuiditas dan Arus Kas Bebas berpengaruh terhadap Return on Investment. Sedangkan Debt Equity Ratio tidak berpengaruh terhadap Return on Investment karena Debt Equity Ratio memiliki nilai t-test 0.498 lebih kecil dari 1.9949 dan nilai t-tabel 0.620 lebih besar signifikansi α = 0.05 maka dapat disimpulkan DER tidak berpengaruh terhadap investasi kembali.
Parametric Analysis of Disperse Phase Soot Transport and Mass Capture in an Ionized Diesel Exhaust Crossflow Bangbang Kurniawan; Asep; Agung Sudrajat; Dhimas Satria; Dwinanto Sukamto; Sunardi; Syarif Abdullah; Mekro Permana Pinem
Jurnal ASIIMETRIK Jurnal Ilmiah Rekayasa & Inovasi Volume 8 Number 2 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i2.10063

Abstract

This study investigates the influence of applied voltage, electrode spacing, and operating duration on the collection rate of fine particulate matter (PM2.5) in a diesel engine Electrostatic Precipitator (ESP). Using a laboratory-scale ESP integrated with a diesel exhaust system, experiments were conducted at three voltage levels (1.5, 4.5, and 6.7 kV), three electrode spacings (1.5, 2.0, and 2.5 cm), and three operating durations (3, 5, and 7 min). Precipitator performance was quantified using the gravimetric method. The peak particulate collection rate reached 1.10 mg/s under optimized operating parameters (6.7 kV applied voltage, 1.5 cm electrode spacing, and a 7 min operational duration. Statistical analysis via Analysis of Variance (ANOVA) indicates that operating time is the most dominant factor governing the recorded particulate collection rate. While increasing the applied voltage and minimizing electrode spacing demonstrated clear positive physical trends in collection performance by boosting local electric field intensity, their standalone individual effects were not statistically significant at a 95% confidence level. This behaviour reveals the kinetic nature of gravimetric mass accumulation, where sufficient residence time is required to differentiate field-driven transport variances from baseline analytical thresholds. These findings provide critical baseline insights for optimizing compact, low-pressure-drop electrohydrodynamic emission controls on small-scale diesel power systems.
Co-Authors Agung Sudrajat Bangbang Kurniawan Dhimas Satria Dwinanto Sukamto Mekro Permana Pinem Sunardi Syarif Abdullah