This study aims to describe the application of Internet of Things (IoT) technology in optimizing soil health management through a systematic literature review. This research compares various IoT implementations for monitoring soil moisture, pH, and nutrients based on previous studies, and identifies differences in technological approaches, sensors used, and automation levels. The review results indicate that although IoT technology is proven effective for real-time soil condition monitoring and supporting precision agriculture, its implementation varies significantly between advanced systems with full automation developed internationally and simpler, local monitoring systems in Indonesia. The comparison shows that wireless inductive moisture sensors are superior in accuracy and corrosion resistance compared to conductive sensors. A TDS sensor-based hydroponic nutrient monitoring system demonstrated high accuracy with an average error of 4.7468% , while soil pH monitoring achieved an accuracy with a Mean Absolute Error (MAE) of 0.14. Furthermore, automated watering systems proved to reach a success rate of up to 93.75%. This review concludes that adapting low-cost wireless sensor system models has great potential for improving the efficiency of soil management in Indonesia, despite facing challenges in infrastructure and digital literacy.
 

GPA (Grade Point Average) is a reflection of a person's performance while at university which is described in the form of numbers. There are several factors that influence the size of a person's GPA. One factor that may have an influence is the length of study time, because studying in any form is closely related to all lecture activities that support grades. The aim of the research is in response to the desire to understand how certain factors can influence a student's academic achievement and whether there is a relationship between GPA and length of study time. The research method used is the chi-square test of independence as a statistical method and field studies for data collection and processing. The source of research data used by researchers is students from Sultan Ageng Tirtayasa University who were collected through questionnaires. Respondents will be given the choice of a GPA level of more than 3.5 or less than 3.5 and also the length of study time at a level below 2 hours and above 2 hours. Then the answers from the respondents have been collected, then the answers will then be processed and analyzed again to find conclusions. Thus, from the survey, the results of H0 were not rejected and it can be concluded that there is no association between GPA and length of study time.