Table Generic MAC schemes Contention-based Conflict- free Hybrid ALOHA: transmit whenever ready. Slotted ALOHA: transmit at the beginning of a time. ALOHA ® is the hazard modeling program for the CAMEO® software suite, which is used widely to plan for and respond to chemical emergencies. Learn more. Say hello to health and happiness. Our organic products are full of the essential nutrients your body needs and free of anything it doesn't.