The aim of the research is to analyze the influence of viral marketing and customer reviews on purchasing decisions with consumer trust as a mediating variable. In marketing theory, purchasing decisions can be improved by mediating consumer trust, so that products can be sustainable. The study was conducted on Indonesian iced tea products, which are typical tea leaf products from Indonesia. The type of research used in this research is quantitative and analyzed using PLS. 105 respondents in the research were customers of Indonesian iced tea products in Palangka Raya City. The research results show that viral marketing, customer reviews mediated by consumer trust variables had a significant positive effect on purchasing decisions, viral marketing had a significant positive effect on purchasing decisions, viral marketing had a significant positive effect on consumer trust, customer reviews had a significant positive effect on purchasing decisions, customer reviews had a significant positive effect on consumer trust and consumer trust had a significant positive effect on purchasing decisions for Indonesian Iced Tea products in the city of Palangkaraya.

This study investigates the intricate relationships between macroeconomic infrastructure, supply chain smoothness, national competitiveness, and economic growth within the BRICS nations—Brazil, Russia, India, China, and South Africa. This study adopts a quantitative approach with cross-sectional data to examine the interrelationships. The research confirms that macroeconomic infrastructure significantly influences supply chain smoothness and a country's economic growth, underscoring the pivotal role of infrastructure development in enhancing supply chain efficiency and fostering economic expansion. However, rejecting hypotheses regarding the direct impact of supply chain smoothness and national competitiveness on economic growth highlights economic growth dynamics' complex and multifaceted nature within the BRICS context. This study emphasizes the need for nuanced, context-specific strategies to address each BRICS nation's unique challenges and opportunities. Theoretical implications call for a more comprehensive theoretical framework considering the contextual factors influencing economic growth within BRICS countries. Practical implications highlight the importance of strategic infrastructure investments and comprehensive policy approaches that extend beyond isolated factors. Despite its contributions, this study has limitations, including simplifying complex economic relationships and needing more country-specific analyses. Future research should explore broader variables, non-linear relationships, and country-specific nuances to understand economic growth in the BRICS group better.

Currently, school sustainability is the focus of attention of all parties, including education quality management experts, which is related to schools' weaknesses in using big data and artificial intelligence (AI). The aim of this research is to analyze the role of using big data and AI in improving the quality of education quality management in Indonesia and its impact on school sustainability. The research design uses a quantitative approach, especially correlational, verification or hypothesis testing based on empirical data in the field. The research population was all teachers, principals and high school supervisors in Palangkaraya City, Central Kalimanan, totaling around 5,423 people. The sample size used the Hair formula and obtained a sample size of 178 people. Data was collected using a questionnaire which was distributed to selected samples using a Google form. Primary data was analyzed using SMART PLS. The results shows that the use of big data had an impact on the quality education management, it also has an impact on school sustainability, while artificial intelligence had an impact on the quality education management, it also had an impact on school sustainability, In addition, quality education management had an impact on school sustainability and it mediated the relationship between the use of big data and school sustainability, and finally, quality education management mediated the relationship between artificial intelligence and school sustainability.

This study investigates the mediating effect of smart digital organizations on the relationship between digital leadership, digital talent scholarships, and learning management systems on digital technology adoption. This idea was tested using a quantitative methodology in this study. The research instrument was a questionnaire filled out by the respondents. Participants in this study were all lecturers and students at Palangka Raya University, Kalimantan, Indonesia. Two hundred thirty-six participants were randomly selected for this study, and data were analyzed using a structural equation model (SEM). This study found that digital leadership, digital talent scholarships, and learning management systems have a beneficial and statistically significant influence on digital technology adoption. In addition, smart digital organizations mediate the link between digital leadership, digital talent scholarships, and learning management systems on digital technology adoption. This research is helpful for higher education institutions because information technology is necessary to face the era of globalization. The novelty of this research offers its research analysis with quantitative analysis.