Cov txheej txheem:

Dab tsi yog forward pass thiab backward pass hauv qhov project tswj?
Dab tsi yog forward pass thiab backward pass hauv qhov project tswj?

Video: Dab tsi yog forward pass thiab backward pass hauv qhov project tswj?

Video: Dab tsi yog forward pass thiab backward pass hauv qhov project tswj?
Video: Nyiaj yog dab tsi? 2024, Hlis ntuj nqeg
Anonim

Forward pass yog ib txoj kev txav mus los rau pem hauv ntej los ntawm lub network daim duab los txiav txim qhov project ncua sij hawm thiab nrhiav txoj hauv kev tseem ceeb lossis Free Float ntawm qhov project . Qhov twg rov qab hla dhau sawv cev mus rov qab mus rau qhov kawg tshwm sim los xam qhov pib lig lossis nrhiav seb puas muaj kev poob qis hauv qhov kev ua si.

Dhau li ntawm no, dab tsi yog backward pass?

A rov qab hla dhau nyob rau hauv thaj tsam ntawm kev tswj xyuas qhov project yog hais txog kev suav cov hnub ua tiav lig thiab hnub pib lig rau feem ntawm cov sijhawm ua haujlwm uas tsis tau ua tiav.

Ib sab saum toj no, PERT daim duab yog dab tsi? A PERT daim ntawv qhia yog qhov cuab yeej tswj hwm qhov haujlwm uas muab cov duab sawv cev ntawm qhov haujlwm raws sijhawm. Txoj Haujlwm Kev Ntsuam Xyuas Kev Ntsuam Xyuas ( PERT ) rhuav tshem cov haujlwm ntawm tus kheej ntawm ib qhov project rau kev txheeb xyuas.

Ntxiv rau qhov no, cov txiaj ntsig dab tsi suav nrog ntawm qhov rov qab dhau ntawm qhov project network?

Los ntawm qhov no dhau , Lub Caij Nplooj Ntoos Hlav thiab Caij Nplooj Ntoos Hlav cov nqi raug xam . Cov qauv rau cov rov qab hla dhau yog qhia hauv qab no: Late Start = LF - Duration. Late Finish = Yam tsawg kawg nkaus (lossis qis tshaj) LS tus nqi los ntawm cov neeg ua tiav tam sim

Koj ua li cas rov qab hla dhau?

Rau kev rov qab mus, ua raws cov kauj ruam no:

  1. Siv lub sijhawm ua tiav thaum ntxov ntawm cov haujlwm kawg hauv lub network thiab sau tus lej ntawd raws li hnub ua tiav lig thiab.
  2. Tshem tawm lub sijhawm thiab ntxiv 1 txhawm rau tsim qhov pib lig rau cov haujlwm kawg hauv qhov project.

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