Video: Dab tsi yog replication hauv kev sim tsim?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv engineering, science, thiab txheeb cais, rov ua dua yog repetition ntawm ib kev sim mob kom qhov sib txawv ntawm qhov tshwm sim tuaj yeem kwv yees. ASTM, hauv tus qauv E1847, txhais rov ua dua raws li qhov rov ua dua ntawm cov txheej txheem ntawm tag nrho cov kev kho mob sib xyaw kom raug muab piv rau hauv ib qho kev sim.
Ntawm no, dab tsi yog replication nyob rau hauv ib qho kev sim Vim li cas replication tseem ceeb?
Tau txais tib yam tshwm sim thaum ib kev sim rov yog hu ua rov ua dua . Rov ua dua yog tseem ceeb hauv kev tshawb fawb kom cov kws tshawb fawb tuaj yeem "kuaj xyuas lawv txoj haujlwm." Cov txiaj ntsig ntawm kev tshawb nrhiav tsis zoo yuav raug lees paub tshwj tsis yog tias qhov kev tshawb nrhiav rov qab ntau zaus thiab cov txiaj ntsig zoo ib txwm tau txais.
Ib yam li ntawd, qhov piv txwv ntawm kev rov ua dua yog dab tsi? Siv rov ua dua hauv ib kab lus. npe. Rov ua dua yog kev tsim tawm lossis luam tawm ib yam dab tsi, lossis yog ib qho kev luam tawm. Thaum ib qho kev sim rov ua dua thiab cov txiaj ntsig los ntawm qhov qub yog rov ua dua, qhov no yog ib qho piv txwv ntawm a rov ua dua ntawm qhov kev kawm thawj. Ib daim qauv ntawm Monet painting yog ib qho piv txwv ntawm kev sib tw
Hais txog qhov no, kev sim kev tshawb fawb tsim yog dab tsi?
Kev sim tsim kev tshawb fawb yog qhov tseem ceeb ntawm kev tsim kho kev tshawb fawb uas yog siab nyob rau hauv causal (internal) validity. Lub sij hawm " kev tshawb nrhiav kev sim "yog qhov tseem ceeb ntawm kev tsim kho kev tshawb fawb uas yog siab nyob rau hauv causal (los yog internal) validity.
Vim li cas replication tseem ceeb heev?
Rov ua dua yog li ntawd, yog tseem ceeb rau ntau qhov laj thawj, suav nrog (1) kev lees paub tias cov txiaj ntsig tau siv tau thiab ntseeg tau; (2) kev txiav txim siab ntawm generalizability los yog lub luag hauj lwm ntawm extraneous variables; (3) kev siv cov txiaj ntsig rau cov xwm txheej hauv ntiaj teb tiag; thiab (4) kev tshoov siab ntawm kev tshawb fawb tshiab sib txuas cov kev tshawb pom yav dhau los los ntawm
Pom zoo:
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Dab tsi yog qhov kev ua yuam kev hauv kev sim nrog cov hluav taws xob tam sim no?
Cov peev txheej ntawm kev ua yuam kev suav nrog cov cuab yeej, ib puag ncig, txheej txheem, thiab tib neeg. Tag nrho cov kev ua yuam kev no tuaj yeem ua tsis tau lossis ua haujlwm nyob ntawm seb lawv cuam tshuam li cas. Instrumental yuam kev tshwm sim thaum cov cuab yeej siv tsis raug, xws li qhov sib npaug uas tsis ua haujlwm (SF Fig