University timetabling is NP-hard: every teacher, room, and group is a shared resource that cannot be double-booked. This article walks through the genetic algorithm in the HSupp scheduling API—chromosome encoding, weighted hard/soft constraints, greedy seeding, elitism, and adaptive mutation—using the real Python engine as the reference implementation.

Edge smart home systems receive inputs from many modalities—voice, gestures, sensors—but actuators only understand simple commands. This article covers token normalization, FSM-based routing, and safety escalation patterns used in the Sentinel Edge project.

5G core network functions handle critical infrastructure traffic. This article documents three availability vulnerabilities in free5GC—memory growth, nil dereference, and missing IE panics—with controlled demo endpoints and root cause analysis.

Building secure APIs requires more than JWT validation. This article walks through composing multiple NestJS guards for authentication, email verification, role-based access, and resource ownership—patterns from a production academic project API.