▁extension ▁to ▁earned ▁value ▁management ▁( E VM ), ▁which ▁ren ames ▁ 2 ▁traditional ▁measures , ▁to ▁indicate ▁clearly ▁they ▁are ▁in ▁units ▁of ▁currency ▁or ▁quantity , ▁not ▁time . ▁ ▁E arn ed ▁value ▁management ▁( E VM ) ▁is ▁a ▁project ▁management ▁technique ▁for ▁meas uring ▁project ▁progress ▁in ▁an ▁objective ▁manner , ▁with ▁a ▁combination ▁of ▁meas uring ▁scope , ▁schedule , ▁and ▁cost ▁in ▁a ▁single ▁integrated ▁system . ▁ ▁E ff ort ▁management ▁is ▁a ▁project ▁management ▁sub dis cipl ine ▁for ▁effective ▁and ▁efficient ▁use ▁of ▁time ▁and ▁resources ▁to ▁perform ▁activities ▁regarding ▁quantity , ▁quality ▁and ▁direction . ▁ ▁Enter prise ▁model ing ▁is ▁the ▁process ▁of ▁understanding ▁an ▁enter prise ▁business ▁and ▁impro ving ▁its ▁performance ▁through ▁creation ▁of ▁enter prise ▁models . ▁This ▁includes ▁the ▁mod elling ▁of ▁the ▁relevant ▁business ▁domain ▁( us ually ▁relatively ▁stable ), ▁business ▁processes ▁( us ually ▁more ▁vol atile ), ▁and ▁Information ▁technology ▁ ▁Est imation ▁in ▁project ▁management ▁is ▁the ▁processes ▁of ▁making ▁accurate ▁estimates ▁using ▁the ▁appropriate ▁techniques . ▁▁ ▁Event ▁chain ▁diagram ▁: ▁diagram ▁that ▁show ▁the ▁relationships ▁between ▁events ▁and ▁tasks ▁and ▁how ▁the ▁events ▁affect ▁each ▁other . ▁ ▁Event ▁chain ▁method ology ▁is ▁an ▁uncertainty ▁model ing ▁and ▁schedule ▁network ▁analysis ▁technique ▁that ▁is ▁focused ▁on ▁ident ifying ▁and ▁man aging ▁events ▁and ▁event ▁ch ains ▁that ▁affect ▁project ▁sched ules . ▁ ▁Executive ▁spons or ▁is ▁the ▁senior ▁member ▁of ▁the ▁project ▁board ▁and ▁often ▁the ▁chair .