A samar da aikin na Cobb-Douglas - biyu-factor model

Bugu da kari a hadaddun multifactorial model na ci gaban tattalin arziki, sau da yawa ta amfani da Saukake, biyu-factor, model. Cobb-Douglas - wani model wanda ya nuna da dogaro da fitarwa (Q) daga cikin abubuwan da haifar da shi: aiki halin kaka - (L) da kuma masu zuba jari - (K).

Masana harkokin tattalin arziki sun samarwa biyu yiwu zaɓuɓɓuka saboda gina biyu-factor model, shan la'akari kimiyya da ci gaban fasaha da kuma ba tare da rajista.

A samar da aikin na Cobb-Douglas dangane NTP

Tattalin arzikin model cewa daukan la'akari da real nasarorin da kimiyya da kuma ci gaban fasaha, aiki da kuma babban birnin mafi m. A irin wannan yanayi, shi ne mai yiwuwa a samu hakan riba a wannan kudin na aiki da kuma kayan aiki. A wannan model, wasu iri-haše taimaka wajen kara halin kaka da kuma samar da tsabar kudi tanadi a cikin aiki, da sauran - kaiwa zuwa wani raguwa a zuba jari. A farko da irin zuba jari take kaiwa zuwa aiki tanadi, da kuma na biyu - don ajiye babban birnin kasar.

The m ba la'akari da NTP

A cikin mahallin da model na tattalin arziki, a lokacin da ba a dauki la'akari kimiyya da ci gaban fasaha, babban birnin kasar jari daukan wuri a karkashin m halin kaka. Masana harkokin tattalin arziki karatu nuna cewa yin amfani da irin wannan fuskanta take kaiwa zuwa wani raguwa na karshe samfur.

A daya hannun, wannan halin da ake ciki na iya ze m. Amma a gaskiya, wannan sabon abu ne quite yiwu cewa a hannu daya hõre cimma STP, a daya bangaren shi ne suka ƙaryata game da kamfanonin, tun da babu wani tasiri ihisani ga gabatarwar sababbin abubuwa a cikin samarwa. A sakamakon haka, kamfanin shan wahala da karin halin kaka domin sayan sabon kayan aiki da ba a yi amfani a samar da tsari, amma kawai rataye a kan balance sheet da kuma rage cika.

Yana da sauki a gani dõmin ya zama tsaka-tsaki mafita cewa hada ra'ayoyin biyu da aka bayyana.

Cobb Douglas model domin sanin girma

A karo na farko da wannan model aka samarwa da Knut Wicksell. Amma kawai a 1928, shi aka gwada a yi, tattalin arziki Cobb kuma Douglas. A samar da aikin na Cobb-Douglas domin sanin matakin na jimlar fitarwa Q da adadin kokarin kashe babban birnin kasar (L kuma K).

The aiki kama da wannan:

Q = A × Lα × Kβ

Inda: Q - juz'i na samarwa.

L - Kokarin.

K - Capital zuba jari;

A - fasaha factor.

α - darajar aiki halin kaka elasticity.

β - darajar zuba jari elasticity.

Alal misali, ka yi la'akari da lissafi Q = L0,78 K0,22. A wannan lissafi za mu iya ganin cewa a cikin total samfurin na aiki rabo ne 78% da rabo daga cikin babban birnin kasar - 22%.

Gazawar da model na Cobb-Douglas

A samar da aikin na Cobb-Douglas ya nuna wasu gazawar da cewa dole ne a dauki la'akari lokacin yin amfani da model.

Production kundin ake kara, a lokacin da daya daga cikin abubuwan da ya zauna canzawa, da kuma na biyu da aka ƙara. Wannan shi ne jigon da farko da na biyu hane-hane. Haka kuma, idan daya daga cikin abubuwan da ake gyarawa, da kuma sauran yakan, kowane iyaka naúrar girma factor ne ba kamar yadda tasiri a matsayin gabata darajar.

A wani m darajar da factor a hankali a hankali karuwa daga cikin sauran factor ne cikin hanyar rage karuwa a fitarwa darajar (Q). Wannan ne uku da ta huɗu tauyewa model Cobb-Douglas.

A karo na biyar da na shida gazawar bayar da shawarar cewa kowane daga cikin dalilai na samar da muhimmanci. Wannan shi ne, idan daya daga cikin abubuwan da ke 0, bi da bi, da kuma Q kuma za ta zama sifili.