Modern university campus, dissertation defense scene, mature lady professor, standing, confident posture, glasses perched on nose, curly brown hair, subtle makeup, formal attire, white blouse, black pencil skirt, high heels, holding a folder, gesturing while speaking, wooden podium, microphone, lecture hall, rows of seats, audience members, laptops open, notes scattered, morning light streaming through large windows, soft shadows, warm atmosphere, 3/4 composition, shallow depth of field.