System design and implementation of satisfaction with students' willingness to donate blood again

Blood donation is crucial for securing medical blood supplies. While college students are the primary group of first-time donors, their donation rate remains low. This study targets college students, applying software engineering methodology and Decision-Making Trial and Evaluation Laboratory (DEMATEL) to explore three dimensions—demand, technology, and benefits—that influence their willingness to donate blood again. It constructs a system to boost donation willingness by enhancing demand analysis, clarifying technical implementation paths, and maximizing benefits. Results indicate that demand dimensions like "blood donation convenience" and "transparency of blood donation knowledge" are key drivers of technical implementation. Meanwhile, technical elements such as "blood donation management platform" and "smart reminder mechanism" promote benefit-related outcomes, including "donor satisfaction" and "higher repeat donation rate." The study implements a blood donation intention-enhancing system integrating demand, technology, and benefit feedback mechanisms, verifies its feasibility, and aims to provide references for blood centers and universities in promoting blood donation.