Learning Goal: To practice Tactics Box 23.1 Using Kirchhoffâ'loop law. Circuit analysis is based on Kirchhoff's laws, which can be summarized as follows: â¢ Kirchhoff's junction law says that the total current into a junction must equal the total current. leaving the junction.
Types of Surveillance Systems. Public health departments at local, state, and national levels routinely use different surveillance systems. Here is an overview of some of these systems, including vital statistics, disease reporting, and surveys. There are more specialized surveillance systems, including sentinel surveillance, zoonotic disease surveillance, adverse events surveillance, syndromic surveillance, disease registries, and laboratory surveillance.
Electronic Surveillance. What is electronic surveillance? Electronic surveillance is the monitoring of a home, business, or individual using a variety of devices such as CCTV, legal wiretapping, cameras, digital video equipment, and other electronic, digital, and audio-visual means. Today, electronic surveillance can also refer to surveillance done via computer or mobile phone.