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How much of the assault on the internet comes from countries hostile to the free market system , for example , China ? With many systems , for example , a single individual or group can monopolize a discussion . " There may be the need to include a persistant identifier here if it is a learning management system , for example , which would also have to be factored in . In 2004 , at two schools in the City University of New York system , for example , men made up less than 30 percent of the student body . As for budget limitations , the development of a primary education system , for example , may compete with the restoration of an urgently needed basic health system . The sewer system , for example , is well over 100-years-old in many parts of the City , presenting an immediate and costly need for replacement . A number of complex issues are better managed using these systems , for example , in the areas of monitoring , control and diagnosis . Systems , for example , may require an airline to accept any booking made by a travel agent using the system . Redundancies in public safety information systems , for example , may be required by local , state , or federal statutes . civil service systems , for example , were created primarily to curb patronage .