Technological developments have penetrated various sectors of life, including in the transportation and communication lines in Indonesia. KAI Access is a digital service issued by PT Kereta Api Indonesia in the form of an application. This application is present as a strategic innovation to improve the convenience and comfort of customers in accessing various train services, from ticket bookings, schedule information, to cancellations and refunds. However, from the complaint data submitted by customers, there are two biggest problems that are often experienced, namely related to responsiveness and action from KAI Access which is considered slow in handling user complaints and technical problems. When quick response services are not accompanied by concrete settlement actions, customer trust tends to decline. This research is based on service theory with a service quality and excellent service approach, where the variables of responsiveness and action are the main focus in the analysis of customer loyalty. Using a quantitative approach, with data collection techniques in the form of questionnaires, interviews, and literature studies, the respondents in this study were KAI Access users from the Edan Sepur train loving community. The results showed that the action variable had a positive and significant influence on customer loyalty, while the responsiveness variable did not have a significant influence directly. An important conclusion from this study is that in the context of digital applications such as KAI Access, customers prioritize concrete problem solving rather than just quick response. Therefore, PT KAI needs to strengthen concrete actions in handling complaints to increase long-term loyalty. Therefore, PT KAI needs to strengthen concrete actions in handling complaints to increase long-term loyalty, especially in the era of digitalization of public services that continues to grow rapidly.

This study aims to determine the effect of academic self-efficacy on academic performance in the 2021 intake of students at Padang State University. Academic self-efficacy is an individual's belief in their ability to complete academic tasks, which is believed to play a significant role in determining student academic achievement. This study used a quantitative approach with a survey method, involving 55 respondents as a sample. Data collection was carried out through a questionnaire using a Likert scale to measure students' academic self-efficacy levels, as well as data collection on their Grade Point Average (GPA) as an indicator of academic performance. Data analysis was carried out using the SPSS program, through several testing stages, namely instrument validity and reliability tests, and simple linear regression tests to determine the effect of independent variables on the dependent variable. The results of the analysis indicate a positive and significant influence between academic self-efficacy and academic performance. This is evidenced by the regression coefficient value of 0.009, with a calculated t-value of 15.278, which is greater than the t-table of 2.266, and a significance value of 0.006, which is less than 0.05. These findings indicate that the higher a student's level of confidence in their academic abilities, the better their academic achievement. Therefore, developing academic self-efficacy can be an important strategy for improving the quality of learning and student academic achievement.
 

This literature review investigates the influence of fair value accounting (FVA) on enhancing financial transparency, particularly within the evolving context of digital assets. By analyzing 103 peer-reviewed articles, the study evaluates how FVA facilitates automated, real-time, and market-based disclosures. It identifies FVA as a tool for increasing investor trust and improving the clarity of financial statements by aligning valuations with current market conditions. The review also highlights the specific challenges of applying FVA to decentralized and volatile digital assets such as cryptocurrencies and non-fungible tokens (NFTs). Although FVA contributes to more transparent and relevant reporting, the implementation of FVA for digital assets is hindered by several critical issues. These include inconsistent valuation methodologies, lack of standardized regulatory guidance, susceptibility to market manipulation, and technological limitations in tracking asset value across decentralized platforms. Furthermore, the rapid pace of innovation in digital finance outstrips the adaptability of existing accounting standards and legal frameworks, creating a gap that weakens the consistency of fair value assessments. The review proposes the integration of FVA within a broader theory of decision-making under uncertainty, emphasizing the need for adaptive and digitization-responsive accounting practices. It suggests practical frameworks that align valuation procedures with the unique characteristics of digital assets while ensuring compliance with emerging regulations. This research encourages ongoing examination and policy innovation to ensure that FVA continues to support transparency and informed decision-making in a dynamic financial landscape.

This study employed qualitative methods with primary and secondary data sources. Primary data were obtained through interviews, while secondary data were obtained from important documentation of the Mutiara Welirang Village-Owned Enterprise (BUMDes). Data analysis was conducted using descriptive qualitative methods to obtain a comprehensive picture of the BUMDes' contribution to community welfare. The results of the study indicate that the Mutiara Welirang BUMDes plays an active role in improving the welfare of the Ketapanrame Village community through various services. These services include clean water management, environmental cleanliness management, interest-free loans, stall and kiosk rentals, and tourist attraction management. These various services are considered to have a positive impact on the social and economic conditions of the village community. An Islamic Economics review of the BUMDes' contribution indicates its alignment with Islamic economic principles. The activities carried out are mutually beneficial and align with Islamic values and welfare indicators in the maqashid sharia. This reflects the application of the values of justice, balance, and sustainability in village economic practices. The implications of these findings suggest that the Mutiara Welirang BUMDes can continue to maintain its positive performance and continuously improve the quality of its services. This effort is crucial to ensure the benefits are felt more widely by the community and to further strengthen the role of BUMDes as a driver of village economic development based on Islamic values.

Metabolic syndrome (MetS) is influenced by parental traits and diet. Drosophila melanogaster is a potential disease model organism, sharing physiology and genetic similarities with humans. Previous research had focused on Drosophila melanogaster as a model organism for obesity and diabetes, but not for MetS. This research aimed to determine the effect of both parental diet and high sugar fat (HSF) intake on glucose, cholesterol, and triglyceride hemolymph levels of Drosophila melanogaster. Wild flies were purified in either control (standard) or MetS media (extra 3% sucrose and palm oil). Seventy-five pairs were divided into 5 groups, according to parental origin and feeding media, and maintained in five generations (F1-F5). Glucose, triglyceride, and cholesterol levels were measured using a colorimetric assay in three replications of each generation per group. Glucose, triglyceride, and cholesterol levels were significantly different in all treatment groups, the control groups, and between generations in each group (p<0.05). Higher glucose and triglyceride levels appeared in the youngest generation (F5) of all groups, and in the flies reared on HSF diets. Maternal HSF-exposed groups demonstrated a more pronounced impact of parental metabolic state on the glucose and triglyceride levels of the earlier generation. These findings highlight that parental exposure to HSF and prolonged HSF intake independently and synergistically lead to persistent and amplified metabolic dysregulation across generations. Drosophila melanogaster, modeled in this study, represents a novel experimental organism that is suitable for studying the epigenetic inheritance of MetS, gaining more consideration for the metabolic health consequences of long-term dietary habits and parental metabolic state.

The presence of natural antioxidants in medicinal plants plays a crucial role in inhibiting the detrimental effects of oxidative stress. The aim of this research is to explore more deeply all parts of A. esculenta L from flowers, fruits, seeds, leaves, and stems for the levels of compounds and antioxidant and enzyme inhibitor activities. The flowers demonstrated the highest TPC with 173.15942 ± 6.5083 mg GAE/g. The stems exhibited the lowest TPC value at 69.1967 ± 2.8408 mg GAE/g. The flowers also showed TFC value of 83.157 ± 2.021 mg QE/g while the stems displayed the lowest with 36.7240 ± 1.337 mg QE/g. IC50 value that the flowers possessed the highest antioxidant activity with 22.6539 ± 1.6452 mg/mL, whereas the stems displayed a slightly lower. In terms of the inhibitor of a-amylase activity, the flowers had an IC50 value of 102.4885 ± 11.4370 mg/mL whereas the stems had a lower. The highest IC50 value of the a-glucosidase inhibitor was 76.95 ± 12.0888 mg/mL in the flowers, and the lowest was in the stems. The highest IC50 of pancreatic lipase inhibitor was 109.5943 ± 9.7391 mg/mL in the flowers, and the lowest was in the stems. This study show that there is a relationship between the high content of total phenolic and total flavonoids on antioxidants, antidiabetic and antilipase activities.

Indonesia, a leading palm oil producer, generates 1,250 tons of Oil Palm Empty Fruit Bunches (OPEFB) waste daily, typically disposed of through polluting combustion. This study explores repurposing OPEFB as a substrate for erythritol production, a popular sweetener with minimal impact on blood sugar. The research utilized Moniliella pollinis mutant SP5, a yeast capable of producing erythritol from various substrates. The process involved acid hydrolysis of OPEFB followed by fermentation. When fortified with 15% v/v molasses, OPEFB successfully served as an optimal carbon source for erythritol production, achieving a mass yield of 0.2878 g/g. Further improvement came through the use of ethyl methane sulfonate (EMS) mutagenesis, with the best mutant (mutant 7) reaching a yield mass of 0.3298 g/g and volumetric productivity of 0.0534 g/L/h. This research aims to advance Indonesia's self-sufficiency in erythritol production while providing a sustainable solution for OPEFB waste reduction, simultaneously addressing economic and environmental concerns.

The use of synthetic feed additives in Peking ducks has adverse effects on their growth and productivity. Spirulina sp., a blue-green algae, has the potential to be used as a safe feed additive that can enhance the growth and productivity of ducks. This study aims to analyze the effects of Spirulina (Spirulina sp.) powder as a feed additive on the histomorphometry of the duodenum in Peking ducks (Anas platyrhynchos), focusing on the duodenal lumen diameter, villus height, villus width, mucosal tunic thickness, submucosal tunic thickness, and muscular tunic thickness. This study used a Completely Randomized Design (CRD) with 35 ducks divided into 5 treatments and 5 repetitions. The treatments included a control group and the addition of spirulina powder in feed at concentrations of 2.5%, 5%, 7.5%, and 10%. The data were analyzed by ANOVA with a significance level of 5%, followed by Duncan's test. The results of data analysis showed that spirulina powder had a significant effect (P<0.05) on villus height and duodenal mucosa tunica thickness. The conclusion of this study is that spirulina powder has the potential to be used as a feed additive to improve digestive performance in male Peking ducks, as evidenced by the increase in villus height and thick tunica mucosa in the small intestine. The novelty of this study lies in the utilization of spirulina powder as a feed additive to increase the size of the duodenal tissue structure in Peking ducks. The results of this study are expected to be a new reference on the potential of spirulina as a feed additive to improve poultry feed quality and digestive performance, especially in peking ducks.

The study was conducted to evaluate the effects of microbial inoculants and nutrient levels on the agronomic performance of dry direct-seeded NSIC Rc192 rice under aerobic conditions. Six biofertilizer treatments (control, Bio-N, BioGroe, Mykovam, MykoPlus, and Avatar) were combined with four nutrient levels (0 %, 25 %, 50 %, and 75 % NP + full K). The study aimed to assess the impact of these treatments on root colonization, tiller production, and overall plant growth. Root and soil colonization at 60 days after sowing (DAS) revealed that MykoPlus facilitated more effective root colonization than other inoculants. However, unfavorable environmental conditions, including high temperatures and moisture deficits, negatively impacted tiller production and grain yield. Despite these challenges, BioGroe showed the most promise, significantly enhancing root development and tiller count, particularly when combined with 50 % NP + full K. The study concluded that microbial inoculants, especially BioGroe, can improve rice growth under aerobic conditions, but environmental factors are crucial in determining their effectiveness. Further research is needed to optimize these inoculants for varying environmental conditions to maximize their benefits in rice cultivation.

Coral reefs are vital habitats for numerous fish species, providing food, shelter, and breeding grounds. In Jepara Regency, Central Java, Indonesia, these ecosystems are threatened by human activities and natural disturbances. This study aimed to assess the biodiversity of reef fish in relation to coral health degradation. Researchers used the Line Intercept Transect (LIT) and Underwater Visual Census (UVC) methods to evaluate fish abundance and coral coverage across three locations with six sampling stations. 936 reef fish individuals, representing 35 species and 14 families, were recorded, with the Pomacentridae family being the most prevalent. The highest coral coverage, categorized as fair, was found at Location II (Blebak Beach) at Stations 3 and 4, with coverage of 27.93% and 25.61%, respectively. This coral coverage was positively correlated with reef fish abundance, with counts of 238 and 246 individuals (average ± SD: 242 ± 5.65). The biodiversity index indicated a dominance index (D) ranging from 0.05 to 0.14 (in the fair category), a high evenness index (E) between 0.75 and 1, and a low dominance index (D) between 0.05 and 0.14. A significant correlation was found between coral coverage and reef fish numbers (P < 0.05, R² = 0.8702), with a linear regression equation of y=6.26+67.71. The findings suggest that the health of coral reef ecosystems significantly affects reef fish populations. Hereafter, the healthiness of this ecosystem will support the scientific core development of Marine Sciences as well as fulfill society's need (economically).