Puas yog qhov kev sim thiab quasi tib yam?

Cov txheej txheem:

Puas yog qhov kev sim thiab quasi tib yam?
Puas yog qhov kev sim thiab quasi tib yam?
Anonim

Qhov txawv yog tias nyob rau hauv ib qho kev sim quasi-kev sim cov txheej txheem rau kev ua haujlwm yog xaiv los ntawm tus kws tshawb fawb, thaum nyob rau hauv ib qho kev sim ntuj kev ua haujlwm tshwm sim 'naturally,' yam tsis muaj tus kws tshawb fawb cuam tshuam. Quasi-experiments muaj ntsuas qhov tshwm sim, kev kho mob, thiab cov chav sim sim, tab sis tsis txhob siv qhov random.

Kev sim quasi zoo ib yam li dab tsi?

Zoo kev sim qhov tseeb, ib qho kev sim-kev sim tsim lub hom phiaj los tsim kom muaj kev sib raug zoo ntawm kev ywj pheej thiab kev sib txawv. Txawm li cas los xij, tsis zoo li qhov kev sim tiag tiag, qhov kev sim quasi-sim tsis tso siab rau kev ua haujlwm tsis raug. Hloov chaw, cov kev kawm raug muab rau cov pab pawg raws li cov txheej txheem uas tsis yog-random.

Kev sim quasi ntuj yog dab tsi?

Quasi-natural thwmsim, los ntawm qhov sib txawv, tsis koom nrog random thov kev kho mob. Hloov chaw, kev kho mob yog siv los ntawm kev sib raug zoo lossis kev nom kev tswv, xws li kev hloov pauv hauv kev cai lij choj lossis kev siv tsoomfwv txoj haujlwm tshiab.

Vim li cas kev sim ntuj thiab quasi Tsis tuaj yeem muab cais ua qhov kev sim tseeb?

Natural / Quasi Experiments

Tsis muaj kev tswj - kev sim ntuj tsis muaj kev tswj hwm ib puag ncig & lwm yam txawv txav uas txhais tau tias tus kws tshawb fawb tsis tuaj yeem ntsuas qhov tseeb. Qhov cuam tshuam ntawm I. V, yog li nws muaj qhov siv tau qis sab hauv.

Dab tsi yog qhov txawv ntawm kev sim thiab quasi-experimental design?

Qhov txawvnruab nrab ntawm qhov kev sim tiag tiag thiab kev sim quasi-kev sim: Hauv qhov kev sim tiag tiag, cov neeg koom nrog raug muab tso rau hauv kev kho lossis pab pawg tswj hwm, qhov uas lawv tsis raug muab tso rau hauv qhov kev sim quasi.

Pom zoo:

Nthuav cov khoom
Puas talcum hmoov yaj hauv dej?
Nyeem ntxiv

Puas talcum hmoov yaj hauv dej?

Talc yog xyaum insoluble hauv dej, dilute ntxhia acids, thiab dilute daws ntawm alkali halides thiab alkaline hydroxides. Nws yog soluble hauv kub concentrated phosphoric acid. Vim li cas talcum hmoov tsis yaj hauv dej? Tsim Hauv Tsev.

Vim li cas thiaj siv schlieren photography?
Nyeem ntxiv

Vim li cas thiaj siv schlieren photography?

Schlieren kev yees duab yog txheej txheem pom kev uas yog siv los yees duab cov dej ntws ntawm qhov sib txawv. Tsim los ntawm German physicist lub yim hli ntuj Toepler nyob rau hauv 1864 los kawm supersonic motion, nws yog dav siv nyob rau hauv aeronautical engineering los yees duab cov ntws ntawm huab cua nyob ib ncig ntawm cov khoom.

Yuav rov hais dua email li cas?
Nyeem ntxiv

Yuav rov hais dua email li cas?

Koj tuaj yeem sim: "Kuv tab tom ua raws li hauv qab no" lossis "Ua raws li qhov no [thov / nug / haujlwm]" "Kuv rov qab rau hauv qab no" lossis "Circling rov qab rau ntawm no [thov / nug / assignment]