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All Journal Jurnal Agrotek UMMat Bina Bangsa International Journal of Business and Management
Amin, Chaerul
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance

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The Effect of Debt To Asset Ratio, Long Term Debt To Equity Ratio and Time Interest Earned Ratio on Profitability Farah, Indina; Amin, Chaerul; Pramudianto, Pramudianto
Bina Bangsa International Journal of Business and Management Vol. 1 No. 1 (2021): Bina Bangsa International Journal of Business and Management
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/bbijbm.v1i1.8

Abstract

This study’s purpose is to analyse the influence of DAR, LDER, and TIER on Profitability. Populations of data are taken food and beverage companies listed in BEI from 2009-2011. Samples taken using purposive sampling method and total of samples used during study period is 39 samples. Hypothesis used in this study is multiple linear regression. Based on F test, the results indicated DAR, LDER, and TIER have a significant effect on Profitability. DAR, LDER, and TIER partial effect on Profitability was evaluated using T test. DAR have a negative and non-significant effect on ROE at -0,252. LDER have a negative and significant effect on ROE at -0,437 and TIER have a positive but non-significant effect on ROE at 0,00020
Study of dissolved oxygen quality response in smart watering and autopot systems due to the effect of changes in environmental temperature Amin, Chaerul; Nur Perwitasari, Sophia Dwiratna; Amaru, Kharistya
Jurnal Agrotek Ummat Vol 10, No 2 (2023): Jurnal Agrotek Ummat
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jau.v10i2.13347

Abstract

Hydroponics is an agricultural farming system that does not use soil media but uses water media containing nutrient solutions. The purpose of this research is to measure and observe dissolved oxygen levels in the Smart Watering Unpad and Autopot Systems that have never been done before. The research was conducted using descriptive analysis method that is measuring, observing, calculating, and analysing quantitative data on hydroponic installations Smart Watering Unpad and Autopot. The fertigation used in this study were Smart Watering Unpad and Autopot with the parameters observed were ambient temperature, dissolved oxygen, and the relationship between ambient temperature and Dissolved Oxygen for 30 days of observation. The results showed that the response of dissolved oxygen levels was influenced by environmental temperature in the SWU 01 Lettuce, SWU 02, SWU 03, and SWU 01 Paprika systems had a NEGATIVE relationship direction. The Autopot system is the only installation that has a POSITIVE change in the relationship of dissolved oxygen levels influenced by ambient temperature. Autopot is a hydroponic installation that can maintain the availability of dissolved oxygen levels in the nutrient solution. The Smart Watering Unpad 02 installation can maintain the availability of dissolved oxygen levels in the nutrient solution compared to other installations in the Smart Watering Unpad system type.
Co-Authors Farah, Indina Kharistya Amaru Pramudianto, Pramudianto Sophia Dwiratna Nur Perwitasari