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INDONESIA
Jurnal Sains dan Teknologi
Published by CV ITTC Indonesia
ISSN : -     EISSN : 28077393     DOI : 10.47233
Core Subject : Science, Education, Engineering,
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering
Jurnal Sains Dan Teknologi (JSIT), merupakan Jurnal Penelitian dan Kajian Ilmiah yang diterbitkan CV.ITTC - INDONESIA dan dikelola langsung oleh Webinar.Gratis dan Even.Gratis yang terbit 3 (tiga) kali dalam setahun. Penyunting menerima kiriman naskah hasil kajian dan penelitian untuk bidang, Teknik Elektro, Teknik Sipil, Teknik Mesin, ,Teknologi Informasi.
Arjuna Subject : Umum - Umum
Articles 18 Documents
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Search results for , issue "Vol. 6 No. 1 (2026): Januari - April" : 18 Documents clear
Analisis Faktor yang Memengaruhi Masa Tunggu Kerja Pertama Lulusan FMIPA Universitas Sriwijaya Yolanda, Defita; Maiyanti, Sri Indra; Faruk, Alfensi
Jurnal Sains dan Teknologi (JSIT) Vol. 6 No. 1 (2026): Januari - April
Publisher : CV. Information Technology Training Center - Indonesia (ITTC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jsit.v6i1.3862

Abstract

The waiting time for graduates to find employment is a vital indicator of the relevance of higher education to the labor market, but the factors influencing the waiting time for graduates of the Faculty of Mathematics and Natural Sciences (FMIPA) at Sriwijaya University (Unsri) have not yet been studied in depth. This research aims to analyze the factors influencing the waiting time for employment of Unsri graduates. Using the data from the tracer study conducted, a sample size of 110 alumni from the Faculty of Mathematics and Natural Sciences (FMIPA) at Sriwijaya University (Unsri) was obtained. This study applies the ordinal logistic regression method to model the categorical data structure of the ordinal response variable. Based on the analysis conducted, it is evident that the factors influencing FMIPA Unsri alumni in obtaining their first job (p-value < 0.1) are gender, year of graduation, study program, and the job title applied for.
Rancang Bangun Trainer Pengendalian Kecepatan Motor Listrik Menggunakan Inverter VFD (Variable Frequency Drive) Fatma, Mira Wellya; Saputra, Georgi Beni; Arnella, Ami Juwita
Jurnal Sains dan Teknologi (JSIT) Vol. 6 No. 1 (2026): Januari - April
Publisher : CV. Information Technology Training Center - Indonesia (ITTC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jsit.v6i1.3965

Abstract

The lack of safe, integrated, and adequate VFD learning media in vocational education laboratories creates a significant gap between theoretical understanding and practical competence in induction motor control. This study aims to design, construct, and test a three-phase induction motor speed control trainer based on a VFD inverter suitable for Power Electronics practicum. The research employs a Research and Development approach grounded in experimental engineering, encompassing system design (block diagram, flowchart, wiring diagram), physical construction on a transparent acrylic panel equipped with MCB, contactor, push buttons, AT1 1.5 kW VFD, and 1 HP motor, and empirical testing across eight frequency points from 0 to 65 Hz under no-load conditions. Response variables include motor speed (RPM), phase current, phase voltage, and PWM output waveform. Results show a strong linear relationship between frequency and motor speed (R² = 0.998), with 3000 RPM achieved at 50 Hz consistent with synchronous speed theory. Operating current remains stable (0.26-0.36 A), the protection system functions fully, and the output waveform exhibits representative PWM characteristics. The trainer is proven to meet both technical and pedagogical feasibility criteria as an integrated learning medium that combines active safety, transparent visualization, and multivariable validation.
Konsep Desain Tempat Penampungan Sampah pada Jalan Tua Pati Naya Raya, Kota Palembang Bintang, Trya; ., Firdaus; Mulyati, Ely
Jurnal Sains dan Teknologi (JSIT) Vol. 6 No. 1 (2026): Januari - April
Publisher : CV. Information Technology Training Center - Indonesia (ITTC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jsit.v6i1.4069

Abstract

Urban waste management is a serious challenge for large cities, including Palembang. Jalan Tua Pati Naya Raya is an area with high residential and commercial activity, resulting in increasing amounts of waste, but it is not yet supported by adequate temporary storage sites (TPS). This study aims to design an optimal TPS concept that complies with technical standards and is environmentally friendly to support sustainable waste management. The research methods include field observations, primary and secondary data collection, waste generation analysis, and design planning based on SNI 3242:2008 and Permen PUPR No. 03/PRT/M/2013. The analysis results show that waste generation increased from 31.97 m³/day in 2021 to 56.91 m³/day in 2025 and is projected to reach 117.49 m³/day in 2030. Based on these results, a Type II TPS with a minimum capacity of 100 m³/day is planned on an area of 200 m², equipped with sorting facilities, composting, a closed drainage system, and greening. This design is expected to improve the effectiveness of waste management and the environmental quality of the research area.
Studi Perencanaan Infrastruktur Tempat Penampungan Sampah di Jalan KH. A. Rasyid Siddiq Kota Palembang ., Sonia; ., Firdaus; Mulyati, Ely
Jurnal Sains dan Teknologi (JSIT) Vol. 6 No. 1 (2026): Januari - April
Publisher : CV. Information Technology Training Center - Indonesia (ITTC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jsit.v6i1.4070

Abstract

Population growth and increased urban activity in Palembang City have resulted in an increase in waste volume, particularly in the KH. A. Rasyid Siddiq Road area, which has a high intensity of activity. The existing Temporary Storage Site (TPS) in the area does not meet technical standards, as indicated by its limited storage capacity, lack of waste sorting facilities, inadequate drainage system, and poor environmental aesthetics. This study aims to plan TPS infrastructure that meets waste generation needs, technical standards, and sustainable waste management principles. The research methods included literature studies, field observations, primary and secondary data collection, waste generation analysis, and technical design planning and budget plans (RAB). The results of the analysis show that the volume of waste at the research site reaches 6–8 tons per day with a projected increase to 125.49 m³/day by 2030. Based on the calculation results and land availability, the TPS is planned as a Type II TPS with an area of 192 m² and a storage capacity of 20–30 m³/day, equipped with sorting facilities, a composting area, a leachate drainage system, and a greening area based on the 3R concept. The estimated cost of cnstructing the TPS is IDR 277,060
Rancangan Fasilitas Tempat Penampungan Sampah di Jalan Pangeran Ratu B Kota Palembang Sandy, Listia Monica; ., Firdaus; Mulyati, Ely
Jurnal Sains dan Teknologi (JSIT) Vol. 6 No. 1 (2026): Januari - April
Publisher : CV. Information Technology Training Center - Indonesia (ITTC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jsit.v6i1.4071

Abstract

Population growth and urban activities in Palembang City have led to an increase in waste generation, particularly in the Jalan Pangeran Ratu B area, which has a high density of residential and commercial activities. The existing conditions show limitations in the capacity of temporary storage sites (TPS), designs that are not environmentally friendly, and low implementation of waste sorting at the source. This study aims to design a TPS facility that meets waste generation capacity needs, complies with technical standards, and supports sustainable waste management. The research methods include field observations, primary and secondary data collection, waste generation analysis using the formula Q = P × q, and TPS technical design. The analysis results show that the volume of waste generation in 2025 will reach 64.74 m³/day with an average growth rate of 13.4% per year and is projected to increase to 121.42 m³/day in 2030. The planned TPS is categorized as a Type II TPS with a capacity of 15–20 m³, equipped with a sorting area, drainage system, natural ventilation, and supporting facilities based on the 3R concept. This design is expected to improve the effectiveness of waste management, reduce environmental impact, and support the creation of a clean and sustainable urban environment.
Penerapan Manajemen Risiko pada Proses Pengembangan Perangkat Lunak Setiawan, Aji Awang; Kharisma, Dede; Sophia, Aya
Jurnal Sains dan Teknologi (JSIT) Vol. 6 No. 1 (2026): Januari - April
Publisher : CV. Information Technology Training Center - Indonesia (ITTC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jsit.v6i1.4101

Abstract

The software developing process is a very complex process, because it includes department, company, and individual which have different knowledge and specialization. Additionally, the demand to distribute the software on time and minimum cost, and the extreme competition between the software developers causing new problems and uncertainty. Therefore, the software developing project rely on the adequate project management to achieve the best result to fulfill the previously set parameters of time efficiency, cost, and quality. At a glace, the risk management perhaps increase the complexity of the process itself, but the fact it can reduce the risk and complexity of this software developing project. This journal applies literature review method, and the data are from the research results published in the national and international online journals, and books review the risk management of software developing project. The writer’s research results bring out that the risk factors are found in the software developing process, including the project documentation risk, communication, human resources, culture, bug severity level, and bug repair priority level.
Inovasi Pembuatan Briket dari Bonggol Jagung (Zea Mays L.) sebagai Pengusir Nyamuk dan Aromaterapi Alami Rahmadani, Arini Dwi; ., Susilawati; Sari, Dinda Purnama; Rambe, Raudhiyah Hasanah; Sari, Nailla Deswita
Jurnal Sains dan Teknologi (JSIT) Vol. 6 No. 1 (2026): Januari - April
Publisher : CV. Information Technology Training Center - Indonesia (ITTC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jsit.v6i1.4133

Abstract

Corn cobs (Zea mays L.) are a type of agricultural waste that has the potential to pollute the environment if not utilized optimally, even though they contain carbon that can be processed into biomass briquettes. This study aims to develop an innovation in the production of briquettes from corn cobs that function as an alternative energy source as well as a natural aromatherapy and mosquito repellent through the addition of lemongrass oil. The research method used a descriptive approach through a pilot study that included the process of corn cob carbonization, charcoal grinding and sieving, mixing with tapioca glue and lemongrass oil, molding, and briquette drying, with observational evaluation of physical characteristics and combustion behavior without controlled laboratory testing. The results showed that variations in material composition affected the physical characteristics and combustion performance of the briquettes. A formulation with a 20:2:1 ratio of corn cob charcoal powder, tapioca adhesive, and lemongrass oil produced briquettes with good density, resistance to cracking, relatively little ash and smoke, and a herbal aroma during combustion. The briquettes also showed potential in reducing the presence of mosquitoes around the area of use. This research has implications for the utilization of agricultural waste as an environmentally friendly product that has functional added value and has the potential to support the development of biomass-based alternative energy.
Pemanfaatan Limbah Plastik dan Oli Bekas untuk Pembuatan Paving Block Ramah Lingkungan Masry, Rifqa; ., Susilawati; Audina, Windi; Karolina, Josepin; Zahra, Annisa
Jurnal Sains dan Teknologi (JSIT) Vol. 6 No. 1 (2026): Januari - April
Publisher : CV. Information Technology Training Center - Indonesia (ITTC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jsit.v6i1.4135

Abstract

The increase in the volume of plastic waste and used oil in Indonesia has caused serious environmental problems because plastic is difficult to decompose naturally, while used oil is classified as hazardous waste that has the potential to pollute soil and water. Management of these two types of waste is still limited and not yet optimal, so innovations are needed that can reduce the impact of pollution while providing functional added value. This study aims to evaluate the potential use of plastic waste and used oil as mixed materials in the manufacture of environmentally friendly paving blocks and to assess the physical characteristics and initial durability of the resulting products. The research method used is an experiment with an applicative approach. The research was conducted in Pancur Batu District, Deli Serdang Regency, with variations in paving block mixtures including a control mixture, a mixture with the addition of 10% plastic waste from the fine aggregate volume, and a combination of 10% plastic waste and 5% used oil from the cement weight. The manufacturing process included the stages of material preparation, mixing, molding, and drying. Data analysis was performed using quantitative descriptive techniques by comparing the results of physical observations and simple compression tests between mixture variations. The results showed that paving blocks based on plastic waste and used oil had a relatively dense structure, a flat surface, no visible cracks after drying, and were lighter in weight than conventional paving blocks. Based on manual compression tests, the paving blocks were able to support the weight of an adult without initial deformation, making them suitable for use as non-structural lightweight pavement.
Desain Game Edukatif STEMphoria untuk Meningkatkan Kemampuan Berpikir Kritis Rumodhon, Berliansyah; Fikriyati, Amiq; Pandiangan, Kawan
Jurnal Sains dan Teknologi (JSIT) Vol. 6 No. 1 (2026): Januari - April
Publisher : CV. Information Technology Training Center - Indonesia (ITTC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jsit.v6i1.4138

Abstract

STEM learning at the school level and in pre-service teacher education still faces problems related to low student engagement and limited development of critical thinking skills, which are largely caused by the use of conventional and less contextual learning media. These conditions highlight the need for innovative learning media that integrate technology, meaningful learning experiences, and problem-solving challenges. This study aims to design and develop STEMphoria as a web-based educational game that supports STEM learning while fostering critical thinking skills among students and pre-service teachers. This research employed a Research and Development (R&D) method, consisting of needs analysis, game concept design, prototype development, and limited initial testing. Data were collected through observations, interviews, and user perception questionnaires, while the data analysis technique used was descriptive qualitative analysis to evaluate the feasibility of the product and users’ responses to the developed game. STEMphoria was designed using a game-based learning approach integrated with thematic narratives, progressive problem-solving challenges, and virtual experiment simulations to enhance users’ cognitive engagement. The results of the study indicate that the resulting product, in the form of the STEMphoria game design and prototype, is perceived as engaging and challenging, and is able to provide immediate feedback on players’ decisions. Preliminary trials suggest that STEMphoria has the potential to serve as a relevant and contextual alternative learning medium to support the development of critical thinking skills in STEM education. Further research is required to examine the effectiveness of STEMphoria more comprehensively in formal instructional settings.
Analisis Efektivitas Mesin CNC Lathe Berbasis Overall Equipment Effectiveness (OEE) Firdaus, Hersa Ridwan; Ihsan, Tiaradia
Jurnal Sains dan Teknologi (JSIT) Vol. 6 No. 1 (2026): Januari - April
Publisher : CV. Information Technology Training Center - Indonesia (ITTC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jsit.v6i1.4190

Abstract

The effectiveness of production machines is a key factor in increasing the productivity and competitiveness of the manufacturing industry. CNC Lathe machines as one of the main machines in the machining process are required to operate optimally with a high level of reliability and quality. This study aims to analyze the level of effectiveness of CNC Lathe machines using the Overall Equipment Effectiveness (OEE) method and identify the sources of production losses based on the Five Big Losses concept. The research method used is a quantitative approach with a case study on one CNC Lathe machine unit in a manufacturing company with a make-to-order production system. Research data were obtained through direct observation of machine working time, downtime, number of outputs, and the number of defective products during one production shift. The results showed that the availability value was 94.10%, performance was 98.28%, and quality was 99.50%, resulting in an OEE value of 92.01%. This value has exceeded the world-class standard of 85%, which indicates that the performance of the CNC Lathe machine is in the very good category. The Five Big Losses analysis shows that the dominant losses come from breakdown losses and idling and minor stoppages. This research contributes by evaluating the performance of a CNC lathe machine in a contextualized make-to-order production system and recommending improvements to maintain and enhance machine effectiveness.

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