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Artificial Intelligence (AI) has increasingly shaped the digital transformation of higher education, particularly through its integration with Learning Management Systems (LMS). Features such as intelligent tutoring, predictive analytics, plagiarism detection, and automated grading are reshaping teaching and learning. However, questions remain regarding the readiness of higher education institutions and the acceptance among lecturers and students. This paper presents a Systematic Literature Review (SLR) of studies published between 2020 and 2025, focusing on readiness and acceptance of AI in LMS. Guided by the PRISMA framework, 220 records were identified, 85 screened, 40 assessed for eligibility, and 20 included in the final analysis. Findings highlight that readiness is largely influenced by infrastructure, digital literacy, and institutional policy, while acceptance is shaped by perceived usefulness, ease of use, trust, and behavioural intention. Although challenges such as ethics, cost, and privacy concerns persist, opportunities exist in the form of personalized learning and intelligent decision-making. The review concludes that while AI adoption in LMS is progressing globally, developing contexts such as Malaysian polytechnics require further research and targeted interventions to enhance both readiness and acceptance.

Background: Maritime engineering has traditionally relied on reactive and preventive maintenance strategies, often leading to operational inefficiencies, unplanned downtime, and excessive costs. With the rise of smart ship technologies, predictive maintenance (PdM) has emerged as a data-driven solution, leveraging sensor-based monitoring and real-time diagnostics to optimize ship maintenance. However, its integration into maritime education remains underexplored, particularly in training vessels used for vocational learning. Original Value: This research contributes new insights into the feasibility, effectiveness, and educational relevance of predictive maintenance in maritime vocational training. Unlike previous studies that focus on commercial ship applications, this study examines PdM within the context of training vessels at Poltekpel SULUT, bridging the gap between academic training and industry expectations. Objectives: The study seeks to answer: How does predictive maintenance improve the efficiency, cost-effectiveness, and reliability of naval auxiliary systems in training vessels? Methodology: A qualitative approach was employed, integrating sensor-based performance analysis, structured interviews, and questionnaire surveys involving cadets, instructors, and industry professionals. Data were analyzed through thematic categorization, cross-group comparisons, and narrative synthesis. Results: PdM demonstrated high effectiveness in reducing downtime (92/100), optimizing maintenance efficiency (91/100), and aligning with industry practices (89/100). However, challenges in sensor accuracy (85/100) and training integration were identified. Conclusions: The findings highlight the necessity of incorporating predictive maintenance into maritime training curricula to equip future engineers with the skills required for Industry 4.0 maintenance solutions, ensuring better operational efficiency and sustainability in the maritime sector.

Background: Traditional naval maintenance strategies rely on centralized supply chains and pre-manufactured spare parts, leading to long repair downtimes and logistical inefficiencies, particularly for vessels operating in remote maritime regions. Additive manufacturing (3D printing) offers a disruptive alternative by enabling on-demand production of spare parts, reducing dependence on external suppliers, and enhancing fleet self-sufficiency. However, material durability, operational feasibility, and cost-effectiveness remain underexplored for naval applications. Original Value: This research advances the study of AM in naval engineering, assessing its practical viability beyond theoretical potential. Unlike previous studies focusing on commercial maritime applications, this study evaluates 3D printing’s impact on naval fleet readiness, supply chain resilience, and sustainability. Objectives: The study investigates how 3D printing can optimize naval maintenance efficiency, specifically analyzing its feasibility, material performance, cost implications, and logistical advantages. Methodology: A qualitative-empirical approach was used, combining material performance testing, expert interviews, and operational case studies to evaluate mechanical durability, economic feasibility, and AM integration challenges. Results: Findings indicate that AM reduces repair downtime by 40%, lowers part procurement costs by 30–50%, and enhances supply chain resilience. However, material limitations and infrastructure readiness remain key adoption challenges. Conclusions: Hybrid AM adoption—where 3D printing supplements rather than replaces traditional manufacturing—offers the most practical near-term approach for naval fleets. Strategic investment in material research, onboard AM training, and fabrication infrastructure will enhance fleet efficiency, reduce environmental impact, and future-proof maritime maintenance strategies.

The use of buck converters as DC step-down voltage regulators is increasingly important in various power electronics applications. However, the quality of the output voltage is often disturbed by the presence of ripple, which is influenced by variations in the duty cycle. This study aims to analyze the effect of duty cycle variations on the output voltage and ripple of a buck converter using MATLAB/Simulink simulation. The method used is quantitative simulation by varying the duty cycle from 10% to 90% in a buck converter circuit with fixed parameters: input voltage 30 V, switching frequency 40 kHz, inductor 176.25 μH, and capacitor 44.33 μF. The simulation results show that the output voltage is proportional to the duty cycle, increasing from 3.245 V at D=10% to 26.82 V at D=90%. The highest ripple occurred at D=40% with a value of 0.07 V, while the lowest ripple was at D=50% with a value of 0.0003 V. These findings indicate the existence of an optimal operating point where the system works most stably. This study provides practical guidance in designing efficient and stable buck converters for applications such as battery charging and renewable energy systems.

Identifying fish species found in the Sendang Seruni stream, Tamansari Village, Licin District, Banyuwangi Regency, and analyzing the diversity and quality of its waters. Sampling was conducted over 14 days in July 2025 using umbrella traps, fishing rods, and underwater camera observations at three observation stations. The results of the study showed that there were six fish species, namely Rasbora lateristriata (Wader Pari), Barbodes binotatus (Wader Cakul), Oreochromis niloticus (Nila), Gambusia affinis (Cere), Nemacheilus fasciatus (Uceng), and Channa striata (Channa). The most abundant species was Wader Pari (25 individuals), while Channa was only one individual. Fish diversity in Sendang Seruni was classified as low with an H' value of 1. Clean, stable, and oxygen-rich water quality supports the existence of sensitive species such as B. binotatus, while polluted waters tend to be dominated by tolerant species. These results indicate the need for habitat management and conservation efforts to maintain the balance of the Sendang Seruni aquatic ecosystem. 

White Feces Disease (WFD), which infects Pacific white shrimp (Litopenaeus vannamei), poses a serious challenge in aquaculture due to its potential to cause mass mortality and substantial economic losses. One of the main causes of this disease is bacterial infection from the genus Vibrio. The use of natural substances, such as garlic (Allium sativum) extract, is considered a more environmentally friendly and sustainable alternative for disease control. This study aimed to examine the effect and determine the optimal concentration of garlic extract in inhibiting the growth of Vibrio sp. isolated from WFD-infected L. vannamei ponds, cultured on TCBS media. The study was conducted in vitro using the disc diffusion method with four extract concentrations (25%, 50%, 75%, and 100%) against two bacterial isolates, designated as isolate A and isolate B. The results showed that garlic extract was able to inhibit the growth of Vibrio sp., with the largest inhibition zone observed in isolate A at 75% concentration (14.8 mm) and in isolate B at 100% concentration (19.3 mm). These findings indicate the potential of garlic as a natural antibacterial agent to inhibit pathogenic bacteria and support the sustainability of shrimp aquaculture.

Citrus hystrix DC., commonly known as kaffir lime, is a citrus plant widely distributed in Southeast Asia including Indonesia, Thailand, India, and China. Its leaves are traditionally used as food flavoring and herbal medicine due to their distinctive aroma and therapeutic potential. This study was conducted to identify the presence of secondary metabolite compounds in kaffir lime leaves through qualitative phytochemical screening. Fresh leaves were extracted and tested using standard phytochemical methods with specific reagents to detect alkaloids, flavonoids, phenolics, tannins, saponins, steroids, and terpenoids. The screening process was carried out through colorimetric reactions that indicate the presence of specific metabolite groups. The results showed that kaffir lime leaves positively contain several classes of secondary metabolites, including alkaloids (brownish-black precipitate with Bouchardat reagent), flavonoids (red color with Mg and concentrated HCl), saponins (stable foam formation after shaking with HCl), steroids (green color with acetic anhydride), terpenoids (reddish-purple color with concentrated H2SO4), and tannins (greenish-black color with FeCl3). The findings confirm that kaffir lime leaves are rich in bioactive compounds that may contribute to pharmacological activities such as antimicrobial, antioxidant, anti-inflammatory, and therapeutic properties. These results support the traditional use of kaffir lime leaves as natural medicine and highlight their potential as a source of natural bioactive compounds for further pharmaceutical and nutraceutical development. This study provides preliminary scientific evidence and encourages more detailed quantitative and isolation studies on the active components of Citrus hystrix.

The research aims to determine red onion plants' growth and production response (Allium cepa L.) on Planting Distance Treatment and Eco enzyme Concentration. This study used a Randomized Block Design (RBD) with two treatment factors. The first factor is the Planting Distance treatment consisting of 3 levels, namely J1 = 15 cm x 15 cm, J2 = 20 cm x 15 cm, and J3 = 25 cm x 15 cm. The second factor is the Eco enzyme Concentration, consisting of 3 levels, namely E1 = 0.8 ml ee / 240 ml water, E2 = 1.6 ml ee / 240 ml water, and E3 = 2.4 ml ee / 240 ml water. The study results showed that the Planting Distance treatment significantly affected root length and tuber diameter per sample. However, they had no significant effect on fresh tuber weight on the growth and production of shallots. The Eco enzyme concentration treatment had no significant effect on all observation treatments. The interaction between Planting Distance and the Eco enzyme concentration had no significant effect on all observation treatments.

This study aims to determine the effect of cow manure and liquid organic fertilizer eco farming on the growth and production of shallots (Allium ascalonicum L.). This research method uses a Factorial Randomized Block Design (RAK) consisting of 2 factors. The first factor is cow manure (P) consisting of 4 treatment levels, namely: P0 = Control (Without Compost), P1 = 0.5 kg/plot (5 tons/ha), P2 = 1.0 kg/plot (10 tons/ha) and P3 = 1.5 kg/plot (15 tons/ha). The second factor: Eco Farming consists of 3 treatment levels: C1 = 150 ml/plot, C2 = 250 ml/plot, and C3 = 350 ml/plot. The study's results showed that the provision of cow manure significantly affected plant height, number of leaves, wet weight of tubers per sample, and wet weight of tubers per plot. Providing eco farming impacts plant height, number of leaves, dry weight of tubers per sample, and wet weight of tubers per plot. The interaction between cow manure and eco farming had no significant effect on plant height, number of leaves, dry weight of tubers per sample, and wet weight of tubers per plot.

The research aims to determine red onion plants' growth and production response (Allium cepa L.) on Planting Distance Treatment and Eco enzyme Concentration. This study used a Randomized Block Design (RBD) with two treatment factors. The first factor is the Planting Distance treatment consisting of 3 levels, namely J1 = 15 cm x 15 cm, J2 = 20 cm x 15 cm, and J3 = 25 cm x 15 cm. The second factor is the Eco enzyme Concentration, consisting of 3 levels, namely E1 = 0.8 ml ee / 240 ml water, E2 = 1.6 ml ee / 240 ml water, and E3 = 2.4 ml ee / 240 ml water. The study results showed that the Planting Distance treatment significantly affected root length and tuber diameter per sample. However, they had no significant effect on fresh tuber weight on the growth and production of shallots. The Eco enzyme concentration treatment had no significant effect on all observation treatments. The interaction between Planting Distance and the Eco enzyme concentration had no significant effect on all observation treatments.

The purpose of this study was to determine the effect of Potassium Fertilizer and Chicken Manure on the Growth, Production and Potassium Absorption of Sweet Corn Plants. This study used a Randomized Block Design (RAK) consisting of 2 factors. The first factor is Potassium Fertilizer (K) consisting of 4 levels, namely:K0 = Control (Without fertilizer), K1 = 7.2 g/plot, K2 = 14.4 g/plot, K3 = 21.6 g/plot. The second factor of Chicken Manure Fertilizer (C) consists of 3 treatment levels, namely: C1 = 2160 g/plot, C2 = 2880 g/plot, C3 = 3600 g/plot. The results of this study indicate thatPotassium fertilizer treatment had a significant effect onplant height, weight of cobs with husks per plant, weight of cobs per plot.The treatment of chicken manure has a significant effect onplant height, weight of cobs with husks per plant, and weight of cobs per plot.The interaction between potassium fertilizer and chicken manure had no significant effect on all observation parameters.

This study examines Ahmad Mustain Nasoha’s thoughts on the relationship between the constitution and Islamic law (sharia) within the context of Indonesian citizenship. The interaction between religion and the state in Indonesia has always been a dynamic discourse, particularly in balancing Islamic values as the majority religion with the constitutional principles rooted in Pancasila and the 1945 Constitution. This research employs a qualitative method using a literature review approach to analyze Nasoha’s works and perspectives on integrating Islamic values into the legal and state systems. The findings reveal that, according to Nasoha, Islamic law should not be formalized in a legalistic manner but should function as a moral inspiration and social norm within national life. Through the perspective of legal syncretism, Islamic law, customary law, and national law can be harmonized to create an inclusive and just legal system. Pancasila serves as a meeting point that bridges religious and constitutional principles, allowing Muslims to practice Islamic teachings without conflicting with the constitution. Nasoha’s thought offers a moderate and contextual model of citizenship suitable for Indonesia’s pluralistic society.

Consumer protection is a fundamental aspect in ensuring social justice and legal certainty for all individuals involved in the market, including citizens (WN) and non-citizens (NWN). This study aims to analyze the differences in legal protection for WN and NWN consumers in Indonesia by examining the legal status as well as the practice of its implementation. The research applies a normative juridical approach with descriptive-qualitative analysis based on the Consumer Protection Law, its derivative regulations, and case studies of court decisions related to consumer disputes. The results show that, normatively, Law No. 8 of 1999 concerning Consumer Protection does not differentiate between citizens and non-citizens. However, in practice, there are significant challenges such as administrative barriers, limited access to information, and language difficulties faced by non-citizen consumers. These findings indicate a gap between universal legal norms and the implementation that remains biased toward citizenship status.The study concludes that although Indonesian regulations guarantee equality in consumer rights, there is a need to strengthen implementation mechanisms that are more inclusive, particularly for foreign consumers. This research contributes to the discourse on consumer protection by emphasizing the importance of harmonizing non-discrimination principles with the effectiveness of law enforcement.

Marriages between Indonesian citizens and foreign nationals present complex legal challenges, particularly regarding the citizenship status of children born within such unions. This research explores the legal tension between Indonesia’s Marriage Law No. 1 of 1974 and Citizenship Law No. 12 of 2006, which adopt different approaches to the inheritance of nationality and the safeguarding of children’s rights. Employing a normative juridical method, the study examines statutory regulations, judicial rulings, and scholarly legal works, supported by a comparative analysis of practices in other jurisdictions. The results demonstrate that although the 2006 Citizenship Law introduced the notion of limited dual citizenship for minors, the family unity principle maintained in the Marriage Law creates procedural ambiguities especially in matters of registration and the age threshold for citizenship determination. Such inconsistencies often give rise to administrative barriers that may place children at risk of statelessness. The study argues that aligning the two legal frameworks is imperative to achieve legal certainty and uphold the best interests of the child, consistent with international conventions ratified by Indonesia. It further suggests amending overlapping provisions and improving administrative mechanisms to ensure more coherent and effective citizenship protection for children of mixed marriages.

The purpose of this study was to: 1) Whether or not there is an influence of the use of technology on student achievement in the PAP Study Program of FKIP UNS; 2) Whether or not there is an influence of interest in learning on student achievement in the PAP Study Program of FKIP UNS; and 3) Whether or not there is an influence of the use of technology and interest in learning on student achievement in the PAP Study Program of FKIP UNS. This research uses a quantitative approach with a survey method. The population in this study were active students in the PAP Study Program of FKIP UNS Class of 2019, 2020, and 2021 with the number of samples determined by the Issac and Michael table obtained 150 samples. The data analysis in this study used multiple linear regression analysis techniques with the help of the IBM SPSS 24.0 program. The results showed that: 1) There is a negative and significant effect of technology use on student learning achievement in the PAP Study Program at FKIP UNS. This is evidenced by the tcount value greater than the ttable (2.453> 1.976) and a significance value of 0.015 <0.05. 2) There is a positive and significant effect of interest in learning on student achievement in the PAP Study Program at FKIP UNS.  This is evidenced by the tcount value greater than the ttable (10.905> 1.976) and a significance value of 0.000 <0.05. 3) There is a positive and significant effect of the use of technology and interest in learning simultaneously on student achievement in the PAP Study Program at FKIP UNS. This is evidenced by the value of Fcount greater than Ftable (116.615 > 3.78) and a significance value of 0.000 <0.05. The results also show that the use of technology and interest in learning together can affect learning achievement by 60.8% while the other 39.2% is influenced by other variables. Therefore, the overall results of this data analysis support the existing hypothesis.

Biology education in high school has an important role in shaping students' science literacy and critical thinking skills. However, ecological material, particularly the topic of Ecosystem Components and their Interactions, is often considered difficult because it is abstract and not easy to observe directly. This research aims to improve student learning outcomes through the application of the Problem Based Learning (PBL) model, which emphasizes real problem-solving, collaborative discussion, and active involvement in the learning process. The research uses the design of Classroom Action Research (PTK) which was carried out in two cycles in class X of St. Rosa de Lima Catholic High School Tondano involving 10 students in the odd semester of the 2025/2026 school year. Data was collected through observation of teacher and student activities, learning outcome tests in the form of pretests and posttests, and learning documentation. The analysis was carried out descriptively, qualitatively, and quantitatively by calculating the average score, percentage of completion, and student involvement. The results of the study showed a significant increase. The percentage of teacher activity increased from 58.3% in the first cycle to 87.5% in the second cycle, while student activity increased from 45.83% to 83.33%. The average score of students also increased from 70% in cycle I to 90% in cycle II, with classical completeness reaching 90%. These findings confirm the effectiveness of PBL as a contextual Biology learning strategy, able to bridge ecological concepts with real life, and increase students' curiosity, cooperation, and critical thinking skills.

This study aims to describe the pattern of instilling human values at Ki Ageng Pandan Alas Martial Arts School, Kademangan Branch, Blitar. The research employed a descriptive qualitative approach with a phenomenological design. Data were collected through participatory observation, in-depth interviews using snowball sampling, and documentation, then analyzed using Miles & Huberman’s interactive model. The findings reveal that value transmission is carried out gradually through regular training, the trilogy of spirituality (hablum minallah, hablum minannas, rahmatan lil alamin), and the school’s greeting symbolized by the keris sigar penjalin. Methods applied include lectures, exemplary behavior, habituation, games, reward and punishment, value discussions, internalization, and real-life activities. The media consist of physical elements (uniforms, belts, symbols, and training equipment) and non-physical ones (teachings, role models, traditions). The study confirms that martial arts schools can serve as a medium for character education, particularly in fostering religiosity, empathy, respect, self-control, and social care. These findings enrich the discourse on value education and provide references for educational institutions, families, and communities.

This classroom action research evaluates the effectiveness of Problem Based Learning in learning Biology on the topic of environmental change at Rosa de Lima Catholic High School Tondano, with the aim of improving the activities and learning outcomes of grade X students. The method used is two action cycles with stages of planning, implementation, observation, and reflection. The subjects are 10 students. Tools include Teaching Modules and Student Worksheets; Data was collected through observation sheets of teacher and student activities (scales 1–4) and 10-item learning outcome tests each cycle. The descriptive analysis calculates the grade average and classical completeness against the Minimum Completeness Criterion of 75. The results showed consistent improvement from cycle I to cycle II. Classical completeness increased from 66% (6 out of 9 students attended; average 76.67) to 90% (9 out of 10 students; average 81.00). The teacher's activity observation score increased from 3.75 to 3.91, while the student's activity from 3.50 to 3.60. The increase is fueled by the formulation of contextual problems, facilitation of guiding questions, individualized feedback, and more disciplined time management, which strengthens engagement, collaboration, and scientific reasoning. The findings indicate that Problem Based Learning is effective in improving Biology learning activities and outcomes on the topic of environmental change. This study adds to the empirical evidence in the context of high schools with low initial completeness and suggests further exploration of other Biology topics along with measurements of critical thinking skills and scientific attitudes for a more comprehensive picture of impact.

Learning style theories have long been used to understand individual differences in learning processes. Models such as VAK (Visual, Auditory, Kinesthetic) and Multiple Intelligences offer frameworks for adapting instructional strategies to students’ preferences. However, these approaches have been criticized for their reductionism and limited empirical validity, often neglecting the holistic nature of human learning. In contrast, the Islamic concept of fitrah provides a more comprehensive perspective, encompassing intellectual, spiritual, moral, and emotional dimensions in an integrated manner. This conceptual article aims to analyze and integrate Western learning style theories with Islamic perspectives to develop a more holistic learning paradigm. Through an extensive literature review and theoretical analysis, the article proposes an integrative model that bridges empirical approaches with spiritual values. Theoretically, this integration enriches academic discourse by connecting two distinct knowledge traditions. Practically, it offers a framework for educators and institutions to design adaptive learning processes that address learner diversity while fostering spiritual and moral development.

Remember sleep quality has a big impact on an athlete's best performance, this study aims to find out the relationship between sleep quality and peak performance, and how much sleep quality contributes to peak performance. To achieve peak performance, an athlete must be in optimum condition during training and matches. This research uses a quantitative descriptive research type with a correlational approach. Quantitative research collects and analyzes data using numbers and measurements. The researcher used purposive sampling, where the sample consists of 30 athletes from Ronggolawe Athletics Club in Tuban. The tools used in this study are the sleep quality scale and the peak performance scale, both administered through questionnaires. The data analysis method used is the product moment correlation test. The results of the data analysis showed a correlation coefficient of -0.423 (r = -0.423). Based on the analysis of the coefficient of determination, it was found that the sleep quality variable contributes effectively to the peak performance variable by 17.9%, while the remaining 82.1% comes from other factors not studied in this research.