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International Journal of Science and Environment
Published by CV. Inara
ISSN : -     EISSN : 28090551     DOI : https://doi.org/10.51601/ijse.v2i4
Core Subject : Science, Education, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Mathematics Physics
International Journal of Science and Environment (IJSE) is to provide a research medium and an important reference for the advancement and dissemination of research results that support high-level research in the fields of Science and Environment . Original theoretical work and application-based studies, which contributes to a better understanding all fields of Science and Environment. The aim and scope of the journal Chemistry, Chemical Analysis, Physical Chemistry, Physics, Biology, Ecology, Biodiversity, Zoology, Biochemistry, Mathematics, Environmental Science, Agriculture, Environment, Forestry.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 382 Documents
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Design and Construction of an Arduino-Based Main Engine Overheating Detection Prototype Mohamad Faris Setiyawan; Prawoto, Agus; Ratnaningsih, Dyah; Monika Retno Gunarti; Dai Robbi, Shofa
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.451

Abstract

Overheating in the ship's main engine, often caused by suboptimal cooling and lubrication systems, poses a high risk to performance and safety. This study aims to design and build an Arduino-based detector prototype. Using a research and development (R&D) method with an experimental approach, the population of b diesel at the Surabaya Maritime Polytechnic, a purposive sample of one Mitsubishi S6B3-MPTA unit. Instruments include Arduino Uno, thermocouple and SW200D sensors, LCD, buzzer, and Wemos D1 Mini integrated with Blynk; quantitative descriptive data analysis through Arduino IDE, comparing readings with a thermogun and connectivity tests. The results show high accuracy of temperature detection (dynamic trend 30.75-34°C), vibration (2-7 mm/s), and IoT range up to 185 m non-obstacle. In conclusion, the prototype effectively provides real-time warnings, improving preventive maintenance.
Troubleshooting Analysis of the Gandroom Cooling System on the KM. Lambelu Taufiqul Hakim, Rifqi; Edy Kristiyono, Antonius; Dai Robbi, Shofa; Retno Gunarti, Monika; Novitasari
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.452

Abstract

The ship's refrigeration system is crucial for the preservation of crew food during the voyage, but a failure on KM. Lambelu resulted in temperatures of only -5°C (fish) and -6°C (meat) versus the target of -18°C. This study aims to analyze troubleshooting using mixed methods convergent parallel with FMEA for RPN, repair impact, and post-replacement evaluation of the compressor. The population is KM. Lambelu's engineering officers, a purposive sample of 30 respondents. Instruments are Likert questionnaires (S, O, D), logbooks, photographs; validity/reliability test analysis, RPN = S × O × D, qualitative reduction. The results show the highest RPN 50 compressor, replacement restores pull-down from 25°C to -23°C. Conclusion: replacement effectively restores optimal function, prioritize preventive inspections.
Development of a Collaborative Leadership Model in Conflict Management in Secondary Schools: A Systematic Literature Review and Its Implications for Vocational and Senior High Schools in West Sumatra Al Mondar, Sunarti; Dwi Sa’diyah, Azizah; Gistituati, Nurizrah; Rusdinal; Nellitawati; Anisah; Setiawan, Merika; Irsyad
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.453

Abstract

Conflicts in senior high schools (SMA) and vocational high schools (SMK) in West Sumatra often arise from differences in academic policies and organizational pressures, but the lack of a specific collaborative leadership model is a major research gap. This study aims to develop a conceptual model of collaborative leadership in conflict management. Using a systematic literature review (SLR) with the PRISMA protocol, the population included publications from 2015–2025 in Scopus, Google Scholar, and national journals; the sample was purposively selected based on relevance to Indonesian secondary schools. The search protocol, using keywords such as "collaborative leadership" and "conflict management," was analyzed through thematic synthesis and content analysis. The results identified a five-dimensional model: collaborative leadership, principal competency, conflict process, supportive culture, and organizational impact. The conclusions confirm that this model fills a local gap with implications for principal training and education policy in West Sumatra.
Development of a Technology Acceptance Model in Analyzing the Behavior of Muslim Traders Towards the Use of Quick Response Codes Indonesian Standard (QRIS) Ilyas, Muhammad; Pulungan, Mardia; Denopan, Arian; Rinaldi, Nedi
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.454

Abstract

The development of digital technology has encouraged the transformation of payment systems from cash transactions to non-cash transactions. One of the digital payment innovations in Indonesia is the Quick Response Code Indonesian Standard (QRIS) developed by Bank Indonesia to facilitate standardized digital payment transactions. This study aims to analyze the behavior of Muslim traders toward the use of QRIS by developing the Technology Acceptance Model / TAM introduced by Fred Davis. This research employs a quantitative approach using a survey method conducted among Muslim traders at Pasar Sangkumpal Bonang in Padangsidimpuan City. Data were collected through questionnaires distributed to respondents selected using a purposive sampling technique. The collected data were analyzed using statistical analysis to determine the relationship between the variables of perceived usefulness, perceived ease of use, attitude toward technology use, and behavioral intention to use the technology. The results indicate that perceived usefulness and perceived ease of use have a positive influence on traders’ attitudes toward using QRIS. These attitudes subsequently influence traders’ intentions to use digital payment technology in their trading activities. The findings of this study show that the perceived benefits and ease of use of technology are the main factors influencing the acceptance of QRIS among Muslim traders. This research is expected to contribute to the development of technology acceptance studies in the context of the digital economy and serve as a reference for stakeholders in increasing the adoption of QRIS among business actors.
The Influence of Principal Transformational Leadership and Organizational Climate On Teacher Performance At SMA Negeri 9 Manado Glady Sumual, Valentin; Altje Meiske Rawis, Joulanda; Junior Mongdong, Romi
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.456

Abstract

This study aims to analyze the influence of the principal's transformational leadership and organizational climate on teacher performance at SMA Negeri 9 Manado. This research uses a quantitative approach with a survey method. The population of the study consisted of 124 teachers, with a sample of 94 teachers determined using the Slovin formula. Data were collected through questionnaires that had been tested for validity and reliability, and then analyzed using multiple linear regression. The results showed that the principal's transformational leadership has a positive and significant effect on teacher performance with a t-value of 2.598 and a significance level of 0.011 (<0.05). Organizational climate also has a positive and significant effect on teacher performance with a t-value of 7.071 and a significance level of 0.001 (<0.05). Simultaneously, both variables have a significant effect on teacher performance with an F-value of 141.782 and a significance level of 0.001 (<0.05). The coefficient of determination (R²) value of 0.752 indicates that 75.2% of the variation in teacher performance is influenced by these two variables. It can be concluded that improving transformational leadership and a conducive organizational climate can enhance teacher performance.
The Effect of Teachers’ Ability To Manage Deeplearning And Digital Utilization On Students’ Learning Motivation at SMP Negeri 2 Airmadidi Abudi, Faliyanthi; Altje Meiske Rawis, Joulanda; Jeini Usoh, Elni
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.458

Abstract

This study aims to examine the effect of teachers’ ability to manage deep learning and the utilization of digital tools on students’ learning motivation at SMP Negeri 2 Airmadidi. The study employed a quantitative approach with an associative research design. The population consisted of 606 students, with a sample of 92 students selected through purposive sampling. Data were collected using a Likert-scale questionnaire measuring deep learning, digital utilization, and learning motivation. Data analysis was conducted using descriptive statistics and multiple linear regression with the assistance of SPSS. The results indicate that teachers’ ability to manage deep learning and digital utilization each have a significant effect on students’ learning motivation, both partially and simultaneously. These findings suggest that learning approaches emphasizing deep conceptual understanding, along with effective use of digital technology, can enhance students’ engagement, interest, and motivation. Therefore, it is essential to continuously develop teachers’ competencies in implementing deep learning and utilizing interactive digital media.
Power Loss Analysis to Overcome End Voltage DropAE005 Substation Golewa ULP Bajawa Feeder Ketut Aris Setiawan Giri, I; Wayan Suriana, I; Wayan Dikse Pancane, I; Wayan Sukadana, I
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.311

Abstract

Voltage drop at the feeder end is one of the problems that often occur in electrical power distributionsystems, especially in networks with increasing loads. This study aims to analyze the power lossesand the relationship between load conditions, network length, and the ability of the substation tomaintain the voltage profile at the AE005 Substation of Golewa Feeder, ULP Bajawa. The analysismethod used technical calculation of power losses, evaluation of load currents, and simulation ofvoltage profiles under several operating conditions to identify the dominant factors causing voltagedrops. Based on the measurement results, the AE005 substation experienced a transformer load of127.99% and a voltage drop of up to 22.9%, exceeding the standard limit of SPLN No.72:1987 whichallows a maximum drop of 4%. To overcome this, a load breakage strategy was carried out to theAE023 substation with a capacity of 25 kVA. The results of the analysis showed that after the loadbreak, the load of the AE005 transformer dropped to 67.62% and the AE023 increased to 81.88%,while the maximum voltage drop value dropped to below 5%. Thus, load breakage has proven to beeffective in reducing power losses and improving voltage quality in the distribution network.  
The Influence of Principals’ Technological Leadership and Teachers’ Digital Competence on The Readiness For Implementing Coding and Artificial Intelligence-Based Learning in Senior High Schools in Langowan District Kiroyan, Yully; Adolfien Katuuk, Deitje; Junior Mongdong, Romi
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.340

Abstract

This study aims to analyze the influence of principals’ technological leadership and teachers’ digital competence on the readiness for implementing coding and artificial intelligence-based learning in senior high schools in Langowan District. Employing a quantitative approach with a survey method, the study involved 79 teacher respondents through questionnaire data collection that had been tested for validity and reliability. The data analysis technique used was multiple linear regression assisted by SPSS software. The results indicate that principals’ technological leadership has a positive and significant effect on implementation readiness. Furthermore, teachers’ digital competence is also proven to have a positive and significant effect on such readiness. Simultaneously, these two variables contribute a significant influence of 68.8% to the readiness for implementing coding and artificial intelligence-based learning. These findings conclude that strengthening technological leadership and enhancing teachers’ digital competence are strategic factors in successfully advancing educational transformation in the digital era
Analysis of Investment Feasibility in The Construction Project of Intan Hotel Masohi City, Central Maluku Regency Franco Lekatompessy, Julez; Taihuttu, Felix; Gery Buyang, Christy; Ronal Ayal, Mansye
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.455

Abstract

The construction of the Intan Hotel in Masohi City, Central Maluku Regency is one of the strategic efforts to support the growth of the tourism sector and improve the regional economy. As government, economic activity, and tourist visits in Masohi City increase, the need for adequate accommodation facilities has become increasingly important. However, the amount of funds needed in the construction of hotels requires an investment feasibility analysis so that the project can provide optimal financial benefits and minimize the risk of losses in the future. This study aims to analyze the feasibility of investment in the Masohi City Intan Hotel Development Project from a financial aspect. The research method used is a quantitative approach with Net Present Value (NPV), Benefit Cost Ratio (BCR), and Payback Period (PP) analysis methods. The data used consisted of primary data obtained through direct observation at the research site, interviews with related parties, and surveys, and secondary data in the form of Cost Budget Plan (RAB), banking interest rates, and investment age. The analysis was carried out taking into account the investment life of 10 years and the prevailing average bank interest rate. In addition, this study also uses several Room Occupancy Rate (TPK) scenarios, namely high, normal, low, and actual scenarios, to describe different hotel operational conditions. The results of the study show that in all scenarios analyzed, the Net Present Value (NPV) value is positive, the Benefit Cost Ratio (BCR) is greater than one, and the Payback Period (PP) is smaller than the set investment life. This shows that the Masohi City Intan Hotel construction project is financially feasible to be implemented and developed. This investment is expected to be able to provide sustainable profits and contribute to the development of the hotel sector and the economy of the Central Maluku Regency.
A Desktop-Based Digital Image Encryption System Using The Lorenz Chaotic Map Makmun, Makmun
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.459

Abstract

The increasing use of digital images in communication, healthcare, and information systems has raised the need for effective image security mechanisms. Conventional encryption methods are often less suitable for image data because of its large size and high correlation among adjacent pixels. Therefore, chaos-based cryptography has gained attention due to its sensitivity to initial conditions and ability to generate highly random sequences. This study aims to develop and evaluate a desktop-based digital image encryption application using the Lorenz System Chaotic Map to ensure image confidentiality and accurate reconstruction. This study employed a quantitative experimental approach in the form of a computational experiment. Data were collected through direct testing using RGB and grayscale images with different dimensions and formats, including .jpg, .png, and .bmp. The system was implemented in a desktop environment and evaluated using processing time, histogram analysis, Mean Squared Error (MSE), Peak Signal-to-Noise Ratio (PSNR), and key sensitivity analysis. The results show that the proposed system successfully transformed original images into visually unrecognizable encrypted images and reconstructed them perfectly during decryption. The encrypted images exhibited more uniform histogram distributions and low PSNR values, while the decrypted images showed zero MSE and infinite PSNR, indicating lossless recovery. The system also demonstrated high sensitivity to small key changes. These findings imply that the proposed method is effective for digital image protection in practical applications. The originality of this study lies in integrating a Lorenz-based encryption algorithm into a user-oriented desktop application equipped with built-in evaluation features.

Page 38 of 39 | Total Record : 382

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