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All Journal International Journal of Recent Technology and Applied Science (IJORTAS) JER
Darmawan, Putu Deny
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Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Design and Performance Testing of Seawater Batteries as Renewable Energy for Marine Boat Lights Anwar, Dedtri; Papia, Jedithjah Naapia Tamedi; Purnomo, Hendra; Darmawan, Putu Deny
International Journal of Recent Technology and Applied Science (IJORTAS) Vol 7 No 1: March 2025
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijortas-0701.773

Abstract

Indonesian seas offer abundant renewable energy potential. Seawater batteries have attractive advantages as a source of electrical energy. The purpose of this study was to design and manufacture a seawater battery and test its performance for ship lighting. The methodology used includes designing and manufacturing a seawater battery storage container based on electrode dimensions, assembling electrodes and insulators, and testing battery performance using LED lights. The results showed that the design produced an 8-cell seawater battery with a height of 24 cm and a diameter of 17.78 cm (7 inches). Performance testing with a 7 W LED lamp for 60 minutes showed that higher salt content caused an increase in the average light intensity produced. In 8 W and 10 W LED lamps, it is known that an increase in the average light intensity produced only occurs at an increase in salt content of 3 to 4%, while an increase in the average light intensity at a salt content of 5% does not occur, iii) average salt content -an average of 4% on a seawater battery with a 60 minute test for a 7W LED lamp produces an average light intensity of 227.33 lumens, for an 8W LED lamp an average of 325 lumens, and for a 10W LED lamp an average of 604, 67 lumens. The greater the power of the LED lamp used, the greater the light intensity produced.
Pengaruh Kompensasi Dan Motivasi Terhadap Disiplin Kerja Dan Kinerja Pegawai Politeknik Pelayaran Sulawesi Utara Darmawan, Putu Deny; Rawung, Stanny S.; Adam, Anggela Aine
Jurnal Economic Resource Vol. 8 No. 2 (2025): September - February
Publisher : Fakultas Ekonomi & Bisnis Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57178/jer.v8i2.2011

Abstract

Sumber daya manusia dianggap sebagai aset utama sebuah organisasi dalam mencapai tujuan. Politeknik Pelayaran Sulawesi Utara secara aktif terus berbenah setelah pandemi COVID-19, namun masih terasa adanya penurunan kinerja pegawai. Penelitian ini bertujuan untuk menganalisis hubungan antara kompensasi dan motivasi terhadap disiplin kerja dan kinerja pegawai. Sampel penelitian berjumlah 175 pegawai, dengan analisis menggunakan metode Partial Least Squares – Structural Equation Modeling (PLS-SEM) melalui SmartPLS 4.0. Hasil penelitian menunjukkan bahwa kompensasi, motivasi, dan disiplin kerja memiliki pengaruh positif dan signifikan terhadap kinerja pegawai, masing-masing sebesar 19,9%, 22,5%, dan 45,6%. Selain itu, disiplin kerja terbukti memediasi pengaruh kompensasi dan motivasi terhadap kinerja pegawai dengan sangat signifikan. Temuan ini menegaskan pentingnya melakukan peningkatan kompensasi dan motivasi kerja guna memperkuat disiplin dan kinerja pegawai di Politeknik Pelayaran Sulawesi Utara
Co-Authors Adam, Anggela Aine Anwar, Dedtri Hendra Purnomo, Hendra Jedithjah Naapia Tamedi Papia Stanny Sicilia Rawung