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International Journal of Research in Vocational Studies (IJRVOCAS)
Published by Yayasan Ghalih Pelopor Pendidikan
ISSN : 27770168     EISSN : 27770141     DOI : https://doi.org/10.53893/ijrvocas.v1i1
Core Subject : Economy, Science, Education, Social, Engineering,
Aerospace Engineering 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 Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other
The International Journal of Research in Vocational Studies (IJRVOCAS) is a double-blind peer-reviewed journal. This journal provides full open access to its content on the principle that making research freely and independently available to the science community and the public supports a greater global exchange of knowledge and the further development of expertise in the field of vocational education and training (VET). IJRVOCAS is since the beginning independent from any non-scientific third-party funding. The establishment of the journal was supported between 2015 and 2016 with grants from the Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation). All members of IJRVOCAS work on an honorary basis. The journal is hosted by Ghalih Publishing and the publishing house of the Ghalih Academic. Scope IJRVOCAS covers all topics of VET-related research from pre-vocational education (PVE), initial vocational education and training (IVET) and career and technical education (CTE) to workforce education (WE), human resource development (HRD), professional education and training (PET) and continuing vocational education and training (CVET).
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 221 Documents
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Environmental Quality Monitoring of Road Preservation in the Paal X Area Adriansyah, Endi; Nalendra, Brama; Radinal; Qolbi, M. Khofidul; Syahfutra, Juanda Edo; Sufra, Rifqi; Syaiful, M.; Putri, Silvia Devi Eka; Dony, Wari
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 1 (2025): IJRVOCAS - April
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i1.388

Abstract

Transportation plays a very important role in economic development in Indonesia. The contribution of construction services to national development is very large, especially in preparing road facilities and infrastructure which have a great influence on economic development in Indonesia. In order to integrate the transportation system in Indonesia, this indicates the increasing number of road maintenance project activities. Jambi Province has a national road where road maintenance activities are carried out every year. The increasing number of road maintenance activities means that based on existing regulations, it is important to carry out environmental testing during the construction period. The purpose of this study is to carry out environmental testing on the Preservation work of the X road section which includes surface water analysis, ambient air testing, n. The method used in this study is descriptive quantitative, the quality standards in this test include Government Regulation No. 22 of 2021. The results of this study at the location obtained all test results with the nationally accredited laboratory KAN are still below the environmental quality standard parameters.
Charging System for Lead Acid Battery and Capacitor Bank with Ant Colony Optimization Muslimin, Selamet; Rifaldi, Muhammad Arya; Rahman, A.
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 1 (2025): IJRVOCAS - April
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i1.391

Abstract

In the modern era, characterized by an increasing demand for mobility and energy efficiency, fast-charging technology plays a crucial role. As the use of electronic devices and electric vehicles continues to rise, the need for more efficient and energy-saving charging systems is also growing. One of the key components in these systems is the lead-acid battery and capacitor bank, both of which have the ability to store and release energy quickly. Therefore, these components are essential in enhancing the effectiveness of the charging process. However, a major challenge in fast charging systems is optimizing the configuration of lead-acid batteries and capacitor banks to minimize charging time while reducing power losses during the process. Addressing this challenge requires an intelligent approach to determining the optimal power distribution path to ensure a stable and efficient charging process. This study utilizes the Ant Colony Optimization (ACO) algorithm to optimize the configuration of lead-acid batteries and capacitor banks in a fast-charging system. The natural behavior of ant colonies inspires the ACO algorithm to search for the shortest path to a food source. This method has been proven effective in solving various complex optimization problems, including power distribution and energy charging. By implementing this algorithm, the system can identify an optimal charging pattern, reducing voltage fluctuations and maximizing energy efficiency throughout the charging process. The primary goal of this research is to develop a fast charging system that is more efficient, energy-saving, and capable of operating optimally under various conditions. By optimizing the use of lead-acid batteries and capacitor banks through the application of the ACO algorithm, this system is expected to accelerate the charging process without compromising reliability and battery lifespan. The findings of this study are anticipated to contribute to the advancement of smarter charging technology, supporting high mobility needs in the modern era, and providing a more sustainable solution for energy management.
Rotary Parking Design Using DC Motors with RFID and IoT-Based Monitoring (Internet of Things) via Telegram Nurhaida; Susanti, Indah
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 1 (2025): IJRVOCAS - April
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i1.399

Abstract

Parking in dense urban areas is a big challenge because the increase in the number of vehicles causes a shortage of parking spaces, congestion and air pollution. As the number of vehicles increases, parking space is needed to accommodate many vehicles. Limited land often results in illegal parking which has a negative impact resulting in traffic jams. Rotary parking is one solution to maximize the use of limited parking space more efficiently. To move rotary parking, a DC motor is needed. In this rotary parking design, which has a capacity of 20 kg, a DC shunt wiper motor with a power capacity of 10-50 watts, 12VDC, and a current of 1-4 Ampere was chosen. This system is equipped with RFID technology to ensure safe vehicle access. The test was carried out eight times with gradual loads ranging from 16.5 kg to 20 kg. The results show that the tool can work well at each stage, with output power ranging from 14.46 watts at a load of 16.5 kg to 12.76 watts at a load of 20 kg. In conclusion, this rotary parking system can work as expected, efficiently handling the carload and a total load of 20 kg, as well as providing additional security using RFID and easy monitoring via IoT.
Towards a Framework for Managing Junior Faculty Mentoring in Higher Education: Lessons from Vietnam Thuy, Le Thi Bich
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 1 (2025): IJRVOCAS - April
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i1.436

Abstract

This conceptual paper proposes a structured framework for managing junior faculty mentoring in higher education institutions (HEIs), with a focus on the Vietnamese context. While mentoring is globally recognized as a core faculty development strategy, its implementation in systems such as Vietnam remains largely informal, fragmented, and weakly integrated into institutional management structures. To address this gap, the study draws on Human Resource Development (HRD), Organizational Learning (OL) theory, and Social Exchange Theory (SET), combined with a review of international mentoring models and the specific characteristics of Vietnam’s higher education environment. The proposed framework comprises six interrelated components: Inputs, Core Processes, Management Layer, Outputs, Evaluation and Feedback, and Contextual Factors. These components are designed to align mentoring activities with institutional development priorities while reflecting cultural and governance realities. The framework emphasizes centralized coordination alongside departmental flexibility, formal mentor and mentee relationships supported by institutional incentives, and continuous evaluation mechanisms adapted to Vietnam’s regulatory context. Although conceptual in scope, the framework offers a theoretically grounded and practice-oriented basis for managing mentoring in Vietnamese HEIs. It provides actionable insights for institutional leaders, policy-makers, and faculty members, while contributing to mentoring literature through its focus on management-oriented approaches in non-Western higher education systems.
Potential of Activated Coal Fly Ash as an Adsorbent Material in Carbon Capture Technology Putri, Rizki Aria; Syarif, Aida; Kalsum, Leila
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 2 (2025): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i2.379

Abstract

The rising carbon dioxide (CO₂) emissions from biomass combustion processes have become a central concern in climate change mitigation. This study explores the utilization of coal fly ash as a cost-effective and environmentally friendly adsorbent in carbon capture technology. Thermal activation was applied to fly ash at temperatures of 600°C, 700°C, and 800°C to enhance its surface characteristics. Characterization using Iodine Number and X-ray Diffraction (XRD) revealed significant improvements in adsorptive properties, particularly at 600°C. The findings confirm that activated fly ash possesses high potential as a CO₂ adsorbent due to the presence of crystalline calcium oxide (CaO), which facilitates carbonate formation. This research supports the integration of waste-based adsorbents in sustainable CO₂ mitigation strategies.
Performance Improvement of Sand-Based Batteries using Sea Sand and Metal Waste as an Alternative Energy Storage System Siswanto; Rusdianasari; Indrayani
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 2 (2025): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i2.427

Abstract

The shift to renewable energy faces the challenge of intermittency, which requires effective Energy Storage Systems (ESS). Sand-Based Thermal Energy Storage (TES) presents a cost-effective and environmentally friendly solution, although it suffers from the low thermal conductivity of sand. This research seeks to enhance the thermal efficacy of sand batteries by incorporating waste iron shavings from lathes as a composite material and examining its suitability for pilot-plant scale heating.A 96-liter sand battery container was used with varying mixtures of iron waste at 0%, 10%, 20%, and 30% relative to the volume of sea sand. The charging process used a 4000-watt power supply for simulation and 4000 Wp solar panels for validation. The discharge process was implemented to provide heat to a copra drying oven. The findings indicate that incorporating waste iron significantly improves the heat transfer rate and temperature uniformity during charging. The composition with 30% iron (P-30) demonstrated the most favorable thermal properties. During discharge tests, the system maintained the copra drying oven temperature within 56-57°C for over 12 hours, meeting the required drying temperature standards. This study proves that sand batteries with a waste iron composite represent an effective, cost-effective, and sustainable TES solution for thermal applications in the context of renewable energy.
Hybrid Passive Cooling System for Rooftop Photovoltaics with Varying Height Clearances Fauzi, Pebi Dian; Kusumanto, RD.; Hasan, Abu
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 2 (2025): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i2.428

Abstract

The increasing adoption of rooftop photovoltaic (PV) systems as a renewable energy source is often hindered by the negative impact of high operating temperatures on their efficiency. To address this, a hybrid passive cooling system offers a promising solution to enhance the power output of PV panels while supporting environmental sustainability. This study investigates the effects of varying the height clearance between a PV panel and the roof surface on the thermal performance and energy efficiency of a hybrid passive cooling system. The research integrates a passive cooling setup, which utilizes natural airflow without additional energy consumption, with a thermoelectric generator (TEG) based on a Peltier module to convert waste heat into supplementary electrical energy. The study employed both simulation and experimental methods to analyze the thermal and energy performance of the system at different height configurations. Five identical 30W Maysun solar panels were tested at heights of 1 cm, 5 cm, 10 cm, 15 cm, and 20 cm, with data on temperature and voltage collected throughout the day. The results indicate that increasing the installation height significantly improves air circulation, leading to lower panel temperatures and higher voltage outputs. The optimal configuration was found to be at a height of 20 cm, which consistently yielded the highest voltage. Furthermore, the integration of a Peltier module with a heatsink proved effective, generating up to 623 mV of additional voltage by converting waste heat. These findings provide valuable insights and practical recommendations for designing more efficient rooftop PV installations, contributing to the advancement of sustainable building technologies and the global effort to reduce carbon emissions.
Study on the Utilization of Egg Shells as CO2 Adsorbent in the Combustion Process of Empty Palm Fruit Bunches Pratama, Andrian Putra; Yerizam, Muhammad; Syarif, Aida
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 2 (2025): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i2.429

Abstract

The problem of carbon dioxide (CO2) emissions from the combustion of biomass, such as empty palm fruit bunches (TKKS), is a significant challenge in climate change mitigation efforts. This research aims to examine the effectiveness of eggshells as a CO2 adsorbent in the combustion process of empty palm fruit bunches, and to analyze the effect of adding adsorbent mass on exhaust gas emissions. Eggshells were calcined at 900°C to produce calcium oxide (CaO), then characterized using XRD and Iodine Number tests, and tested in a CO2 adsorption system using gas flow. The XRD test results showed that calcined eggshells have a crystalline structure with a crystalline level of 93.54%, indicating the dominance of CaO compounds as the active component. The Iodine Number test yielded the highest value of 330.018 mg/g at a mass of 2 grams, which indicates good surface area and porosity. CO2 adsorption testing showed that an adsorbent mass of 15 grams was able to reduce CO2 concentration from 974 ppm to 212 ppm, while adding adsorbent mass above 30 grams did not provide a significant reduction due to the increasing initial CO2 concentration. Overall, the results of this study indicate that eggshells have the potential to be an effective, environmentally friendly, and organic waste-based CO2 adsorbent. Their utilization can be an alternative simple carbon capture technology for biomass combustion systems, while also supporting sustainable household waste management.
Implementation of Convolutional Neural Network in Mobile Applications for Solar Panel Crack and Efficiency Prediction Sodiq, Wisnu Kurniawan; Taqwa, Ahmad; Kusumanto
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 2 (2025): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i2.430

Abstract

Solar panels, as a renewable energy source, are susceptible to efficiency degradation due to cracks in solar cells. Manual crack detection has many limitations, while the use of specialized tools like electroluminescence imaging is not economical for small-scale users. Therefore, this research aims to develop an image-based automatic detection system using the Convolutional Neural Network (CNN) method, specifically the YOLOv8 architecture, integrated into a web-based mobile application using the Flask framework. Solar panel image datasets were collected and annotated using Roboflow, then trained in Google Colab with the help of a GPU. The trained model is integrated into a web-based mobile application, allowing users to upload panel images, detect cracked areas, and estimate panel efficiency based on linear regression of the crack area. Testing results show that the system can function in real-time, although the accuracy of efficiency estimation can still be improved due to limitations in data quantity and variation. This research is expected to be an economical and practical solution for solar panel monitoring.
Enhancing CSR Effectiveness through Financial Literacy: A Moderated Analysis on Corporate Image in PT Arutmin Indonesia Site Asam-asam Rizka, Nor Rahma; Rininda, Bella Puspita; Suasri, Eni; Amelia, Noor; Wawan, Endang; Yakin, Nurul
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 2 (2025): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i2.439

Abstract

This study investigates the effect of Corporate Social Responsibility (CSR) on financial literacy with corporate image as a moderating variable, focusing on the community surrounding PT Arutmin Indonesia Site Asam-asam. Drawing on stakeholder theory, the research argues that CSR initiatives can serve as a strategic instrument to enhance community capacity, particularly in financial knowledge and decision-making skills. Employing a quantitative approach with Moderated Regression Analysis (MRA), the study analyzed 38 valid responses from beneficiaries of CSR programs. The results indicate that CSR has a significant positive effect on financial literacy, and this relationship is substantially strengthened when corporate image is favorable. In the moderated model, the direct effect of CSR becomes less pronounced, highlighting the pivotal role of corporate image in shaping program outcomes. The findings extend CSR literature by positioning financial literacy as a key outcome of corporate social initiatives and by confirming corporate image as a critical boundary condition. Practically, the study provides evidence-based recommendations for companies to integrate CSR with reputation-building strategies in order to maximize stakeholder trust and participation. Despite limitations related to sample size and context, the study offers novel insights from the Indonesian extractive industry, underscoring the importance of aligning CSR implementation with corporate image to achieve sustainable community empowerment.

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