About: http://webisa.webdatacommons.org/315989884

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Electrical engineers have known about ltering processes for well over 80 years and, through the years, they invented many types of circuits and systems that can perform ltering, which are known collectively as lters.
http://www.w3.org/ns/prov#wasQuotedFrom	coursehero.com