In men, a testicular infection, tumor or twisting of the left testicle commonly causes pain that radiates from the testicle into the left side of the abdomen and back. When to See Your Doctor. Call your doctor right away if you develop abdominal and back pain, especially if it doesn't go away in a few days or worsens.
Autonomous Control in Production Logistics. For production systems, different autonomous control methods have been developed. All of these methods aim at enabling parts in a production system to decide about possible alternative routes through a production system.
The Three Types Of Production Are; 1  Primary Production. 2  Secondary Production. 3  Tertiary Production.  Primary Production â is the extraction of basic materials provided by nature, either above or below the earth surface. the extractive industries are: Farming , Fishing and Mining. without these, production would not take place.