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All Journal International Journal of Artificial Intelligence Research Jurnal Technopreneur (JTech) JURNAL PENDIDIKAN TAMBUSAI Journal on Education International Journal of Recent Technology and Applied Science (IJORTAS) International Journal of Business, Law, and Education Interdisciplinary Social Studies Journal of Social Research Seminar Nasional Produk Terapan Unggulan Vokasi (JUMPER) EDUCATIONE: Journal of Education Research and Review Journal Electrical and Computer Experiences Edumaspul: Jurnal Pendidikan
Jedithjah Naapia Tamedi Papia
Politeknik Negeri Manado
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Neuroscience Public Health Social Sciences Transportation Other

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Design and Performance Testing of Seawater Batteries as Renewable Energy for Marine Boat Lights Dedtri Anwar; Jedithjah Naapia Tamedi Papia; Hendra Purnomo; Putu Deny Darmawan
International Journal of Recent Technology and Applied Science (IJORTAS) Vol 7 No 1: March 2025
Publisher : Lamintang Education and Training (LET) Centre

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.
Determinants of Construction Workers’ Safety Performance: Examining the Effects of K3 Implementation, Safety Training, Safety Leadership, and Work Discipline Herotje Siwi; Jedithjah Naapia Tamedi Papia; Franciscus Josep Tulung; Meike Negawati Kesek
Journal Management & Economics Review (JUMPER) Vol. 4 No. 1 (2026): July
Publisher : Malaqbi Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59971/jumper.v4i1.1231

Abstract

The construction project is a risky undertaking that involves exposure to several types of occupational hazards. Consequently, it is necessary to improve the safety performance of construction workers to ensure successful completion of the project and reduce risk at the workplace. This study will analyze the factors affecting safety performance by looking at the impact of K3, safety training, safety leadership, and work discipline on safety performance. A quantitative explanatory research approach was applied in this study, whereby a sample of 150 construction workers was identified via survey technique. Data collection was carried out using structured questionnaires rated on a five-point Likert scale and analyzed using multiple linear regression with SPSS software. The results reveal that K3 implementation, safety training, safety leadership, and work discipline have a positive and significant impact on safety performance. Out of all four variables, work discipline affects safety performance the most, followed by safety leadership, K3 implementation, and safety training. In this respect, the model has an explanatory power of 67.9%.
The Effect of Fuel Cell Reactor Volume on a Pertalite-Fueled Drive Engine Per 75 ML Friani Andani Juliana Manoppo; Blest Johnsis Labi; Jedithjah Naapia Tamedi Papia; Nelson Seleman Luppa
Journal of Social Research Vol. 5 No. 8 (2026): Journal of Social Research
Publisher : International Journal Labs (AHU-0028405-AH.01.14 Tahun 2022)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/josr.v5i8.3316

Abstract

The increasing number of motor vehicles has led to a continuous rise in Pertalite fuel consumption, while petroleum reserves remain limited and non-renewable. One proposed solution is the application of a fuel cell (HHO generator), which utilizes water electrolysis to produce hydrogen and oxygen gases to support the combustion process inside the engine. However, studies examining the effect of fuel cell reactor volume on engine performance remain limited. This study aims to determine the effect of fuel cell reactor volume on the performance of a Pertalite-fueled engine using 75 mL of fuel. The research employed an experimental approach by comparing engine performance without a fuel cell and with a fuel cell equipped with a 180 mL reactor volume (containing an electrolyte solution of 5 g of caustic soda and 180 mL of distilled water, with a current of 3.5 Ah) at three engine speed levels (2000, 3000, and 4000 RPM), with each condition tested three times. The measured parameters included engine speed, operating duration, engine temperature, and battery voltage using a tachometer, stopwatch, temperature gauge, and avometer. The results showed that the use of a fuel cell with a 180 mL reactor volume increased the engine operating duration for the same fuel volume, with an average improvement of approximately 27.5% across the three tested speed levels. However, the final engine temperature tended to be higher, and the battery voltage slightly decreased after testing. These findings indicate that a 180 mL reactor volume provides improved fuel efficiency compared with the engine condition without a fuel cell.
Evaluation Of K3 Management And Risk Analysis In The Factory Environment Herotje Siwi; Jedithjah Naapia Tamedi Papia; Meike Negawati Kesek
International Journal of Artificial Intelligence Research Vol 10, No 1 (2026)
Publisher : Universitas Dharma Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29099/ijair.v10i1.1732

Abstract

This study aims to evaluate the implementation of K3 management and analyze the level of occupational risk in a manufacturing plant. The implementation of an K3 management system is a crucial aspect in maintaining worker safety, increasing productivity, and minimizing the potential for workplace accidents that could harm both the company and workers. The study used a descriptive quantitative approach, employing field observations, interviews, documentation, and questionnaires distributed to 150 respondents, including production operators, technical staff, and factory supervisors. Risk analysis was conducted using the Hazard Identification, Risk Assessment, and Risk Control (HIRARC) method to identify potential hazards and determine the level of risk for each work activity.The results indicate that the implementation of K3 management in the factory environment has been quite successful. However, several weaknesses remain in the supervision of personal protective equipment (PPE) use, compliance with work procedures, and risk control of production machinery. Based on the hazard identification results, several dominant risks with high levels of risk were identified, namely noise exposure, accidents caused by production machinery, potential fires, and fatigue due to excessive workload. The evaluation revealed that the lack of regular training and low worker awareness were the main factors affecting the effectiveness of K3 implementation.This study also found that the implementation of administrative and technical risk controls can significantly reduce the potential for workplace accidents if implemented consistently. Furthermore, company management involvement in routine monitoring and evaluation is a crucial factor in improving occupational safety culture in industrial environments. This study recommends improving K3 training programs, strengthening monitoring systems, and optimizing the implementation of standard operating procedures (SOPs) to minimize occupational risks in the factory environment. With effective implementation of K3 management, companies can create a safe, healthy, and productive work environment for all workers.
The Effect of Sodium Hydroxide (NaOH) Mass on the Performance of a Fuel Cell as an Energy Source for a Prime Mover Engine Exel Lirio Gorung; Simon Simanjuntak; Jedithjah Naapia Tamedi Papia; Nelson Seleman Luppa; Herotje Siwi
Journal of Social Research Vol. 5 No. 9 (2026): Journal of Social Research
Publisher : International Journal Labs (AHU-0028405-AH.01.14 Tahun 2022)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/josr.v5i9.3321

Abstract

The integration of hydrogen-based fuel cell technology as a supplementary energy source for internal combustion engines has gained increasing attention as a strategy to improve fuel efficiency and engine performance. This research investigated the effect of sodium hydroxide (NaOH) mass on the performance of an alkaline electrolysis cell used as a supplementary energy source for a gasoline-powered prime mover engine. An electrolysis cell was assembled using stainless steel electrodes immersed in an aqueous NaOH electrolyte solution to generate hydrogen and oxygen gases (oxyhydrogen or HHO), which were introduced into the engine air intake. Three experimental configurations were tested: (1) 15 g of NaOH with a 5 Ah battery at an engine speed of 2000 RPM; (2) 15 g of NaOH with a 7 Ah battery at 3000 RPM; and (3) 10 g of NaOH with a 5 Ah battery at 4000 RPM. Each configuration used 75 mL of Pertalite gasoline and 150 mL of distilled water. Baseline measurements were obtained under identical operating conditions without fuel cell integration. The results indicated that fuel cell integration extended engine operating time across all RPM settings, with an improvement of up to 52.5% at 4000 RPM, while maintaining comparable average engine speeds. The highest deviation in mean RPM compared with the baseline condition was +14.66 RPM (+0.51%), observed at 3000 RPM using 15 g of NaOH and a 7 Ah battery, indicating a slight improvement in combustion performance. These findings demonstrated that NaOH mass and battery capacity jointly influenced the HHO production rate and, consequently, affected engine performance and fuel consumption characteristics.
DESIGN OF A DIGITAL DISPLAY SYSTEM FOR MONITORING RADIATOR TEMPERATURE ON FOUR-WHEELED VEHICLES I Made Wely Prayoga; Yanse Arfinando Janis; Jedithjah Naapia Tamedi Papia; Herotje Siwi; Tammy Tinny Veisy Pangow
EDUCATIONE Volume 4, Issue 2, July 2026
Publisher : CV. TOTUS TUUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59397/edu.v4i2.284

Abstract

Engine overheating can develop when radiator coolant temperature is not monitored adequately, while conventional dashboard indicators may provide limited numerical information. This study designed and evaluated an Arduino Uno-based digital display prototype for monitoring radiator coolant temperature in four-wheeled vehicles. The system integrated a DS18B20 temperature sensor, Arduino Uno, TM1637 driver, 3-digit 7-segment display, buzzer, and regulated power supply. Evaluation consisted of a three-point comparison against a digital thermometer and vehicle-scenario observations under idling, normal driving, and traffic-jam conditions with the air conditioning on. At reference temperatures of 30, 40, and 50°C, the sensor differed from the reference by 0–1°C, giving a mean absolute error of 0.33°C and a mean absolute percentage error of approximately 0.83%. Vehicle observations covered 32–94°C; the audible alarm remained inactive at 94°C because the programmed threshold was above 95°C. The findings demonstrate proof-of-concept feasibility for direct numerical coolant-temperature display under the reported conditions. However, the evidence does not establish universal vehicle applicability or superiority to factory indicators. Multi-vehicle calibration, repeated trials, quantitative response-time measurement, and durability testing are required before broader deployment.
DESIGN OF A DIGITAL DISPLAY SYSTEM FOR FUEL CONSUMPTION MONITORING IN FOUR-WHEELED VEHICLES Yohanis Prasetyo Dalekes; Leonardo Frando Pasla; Jedithjah Naapia Tamedi Papia; Alfred Noufie Mekel; Tammy Tinny Veisy Pangow
EDUCATIONE Volume 4, Issue 2, July 2026
Publisher : CV. TOTUS TUUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59397/edu.v4i2.286

Abstract

Real-time fuel-consumption information can support more transparent evaluation of vehicle operating efficiency, but low-cost direct-flow prototypes require validation before vehicle deployment. This study designed and evaluated a digital display prototype using an Arduino Uno microcontroller, a YF-B6 Hall-effect water-flow sensor, an LM2596 voltage regulator, and a 20×4 I2C LCD. A prototype-development procedure covered literature review, workflow analysis, hardware and software design, bench sensor testing, system integration, and evaluation. During bench testing with water, one reported sensor reading was compared with each nominal reference volume from 1 to 5 L. Percentage error was calculated as |V_actual − V_sensor|/V_actual × 100. The sensor readings were 0.98, 1.96, 2.95, 3.93, and 4.91 L, producing errors of 2.00%, 2.00%, 1.67%, 1.75%, and 1.80%, respectively, with an average error of 1.84%. All pointwise errors were below the YF-B6 ±3% specification. The readings consistently under-reported the nominal volumes, indicating a systematic calibration bias that may be addressed through calibration correction. Because the prototype was tested with water rather than automotive fuel and was not validated on a moving vehicle, the results demonstrate bench-scale volumetric performance rather than final on-vehicle fuel-consumption accuracy. The system is therefore positioned as a low-cost proof of concept for subsequent fuel-compatible and on-vehicle validation.
Co-Authors Abdul Rahman Adrian Maidangkay Ahmad Muktamar B Ajeng Wulansari Alfred Noufie Mekel Anggitya Alfiansari Antonius Rino Vanchapo Arisanti, Ivon Audy Fryan Agow Baso Intang Sappaile Blest Johnsis Labi Bryant Josua Runturambi Dedtri Anwar Dodi Setiawan Riatmaja Exel Lirio Gorung Firmansyah Reskal Motulo Franciscus Josep Tulung Friani Andani Juliana Manoppo Galman Marcelino Pudi Hendra Purnomo Herotje Siwi I Made Aditya I Made Wely Prayoga Ichsan Ichsan Ilwandri Ilwandri Jerry Heisye Purnama Judijanto, Loso Kamaruddin, Ilham KMT Lasiatun KMT Lasmiatun Leonardo Frando Pasla Lucky Mahesa Yahya Meike Negawati Kesek Musbar Musbar, Musbar Nelson Seleman Luppa Nining Andriani Nodi Poluan Sompie Putu Deny Darmawan Sari, Mike Nurmalia Simon Simanjuntak Siti Munawaro Susanti Usman Syafruddin Syafruddin Tammy Tinny Veisy Pangow Tomi Apra Santosa Usman, Patima M Yanse Arfinando Janis Yohanis Prasetyo Dalekes Zainal Abidin