This study aims to identify the academic stress levels and coping mechanisms used by 2024 cohort students of the Statistics Study Program at Universitas Negeri Medan. A descriptive quantitative method was applied, involving questionnaires and interviews. Data were collected from 50 randomly selected respondents. The instrument was tested for validity and reliability, with all items showing item-total correlations > 0.2787 and a Cronbach’s Alpha score of 0.619, indicating acceptable reliability. The findings revealed high levels of academic stress, particularly in indicators such as feeling overwhelmed by deadlines (mean 3.82; 66%), exam anxiety (3.7; 66%), and lack of rest (3.6; 60%). The most dominant coping strategy was self-soothing (mean 4.44; 90%), followed by junk food consumption (3.5; 60%) and seeking help (3.42; 46%). In contrast, proactive strategies such as creating a to-do list were less commonly used (3.14; 38%). These results highlight the importance of adaptive coping training and psychological support to promote healthier stress management among students.

This study aims to examine and compare the expenditure and income patterns between traditional market traders in Sukaramai Market and MMTC with street vendors operating around the State University of Medan (UNIMED). This study is based on the main differences between the two groups, especially related to business legality, sales location, and operational costs, which have the potential to affect business effectiveness and the economic welfare of the actors. The comparative quantitative method was used to collect data through questionnaires and Simple Random Sampling sampling techniques on 45 respondents, consisting of 30 market traders and 15 street vendors. The collected data were then analyzed using statistical inference techniques to obtain accurate and reliable parameter estimates. The results of the study show that market traders have an average income of IDR 9.37 million with expenses of IDR 6.7 million per month, so that the net profit obtained reaches IDR 2.67 million. Meanwhile, street vendors have an average income of IDR 7.2 million and expenses of IDR 5.53 million, so that their net profit is around IDR 1.67 million. Although market traders' expenses are higher, they still get a greater net profit. This study confirms that business location, legality, and management system factors significantly affect the efficiency and economic success of traders. This finding is very relevant as a basis for formulating fair and sustainable policies for empowering the informal sector, especially for small and micro traders in urban areas, in order to optimally improve their economic welfare.

Ordinary differential equations (PDB) play an important role in various fields of science, from physics to biology, to model dynamic phenomena. Numerical methods such as Runge-Kutta are often used to solve GDP when an exact solution cannot be obtained. This research focuses on modifying the fifth order Runge-Kutta method to increase accuracy and efficiency in solving certain GDPs. The performance evaluation includes error and computation time analysis to assess the improvements provided by this modification. Experimental results show that the modified method is able to reduce errors significantly without a significant increase in computing time. This study contributes to the development of more accurate numerical methods for solving PDB, especially for applications with high precision requirements. The use of this modified fifth-order Runge-Kutta method can be a better choice for various complex PDB problems that require a higher level of accuracy without significant compromise in performance.