Data transmission. Data transmission, digital transmission, or digital communications is the physical transfer of data over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires, optical fibres, wireless communication channels, and storage media.ata transmission, digital transmission, or digital communications is the physical transfer of data over a point-to-point or point-to-multipoint communication channel.
A coal miner completes a screening survey for coalworker's pneumoconiosis. Screening, in medicine, is a strategy used in a population to identify the possible presence of an as-yet-undiagnosed disease in individuals without signs or symptoms. This can include individuals with pre-symptomatic or unrecognized symptomatic disease.
Cervical screening is the process of detecting abnormal changes in the cervix before they can develop into cervical cancer. If the abnormal tissue or cells can be removed, then the disease can be prevented from developing. Cervical screening is thereby mainly a form of secondary prevention by aiming to detect and treat cervical neoplasia early on.