HONEYWELL R7510-B1003-4 CPU MODULE R7510B10034

HONEYWELL R7510-B1003-4 CPU MODULE R7510B10034

CPU MODULE R7510B10034

CPU MODULE R7510B10034中國工業(yè)企業(yè)數(shù)據(jù)庫的使用現(xiàn)狀和潛在問題聶輝華江艇楊汝岱內(nèi)容提要在經(jīng)驗研究中，企業(yè)級的微觀數(shù)據(jù)正受到越來越多的重視。中國工業(yè)企業(yè)數(shù)據(jù)庫成為國內(nèi)外學(xué)者研究中國企業(yè)行為和績效的主要數(shù)據(jù)庫之一。
　　但是該數(shù)據(jù)庫存在樣本匹配混亂、變量大小異常、測度誤差明顯和變量定義模糊等嚴(yán)重問題，忽視這些問題可能會導(dǎo)致研究結(jié)論錯誤。本文介紹了該數(shù)據(jù)庫的基本情況和使用現(xiàn)狀，指出了該數(shù)據(jù)庫存在的缺陷，并根據(jù)現(xiàn)有研究提出了改進(jìn)建議。
　　一引言數(shù)據(jù)是經(jīng)驗研究的細(xì)胞，因此數(shù)據(jù)質(zhì)量的好壞直接決定了經(jīng)驗研究的活力。zui近十多年來，經(jīng)濟(jì)學(xué)界越來越重視使用微觀面板數(shù)據(jù)longitudinal micro－level da ta的研究。相對于宏觀數(shù)據(jù)或行業(yè)數(shù)據(jù)，微觀的企業(yè)數(shù)據(jù)或個體數(shù)據(jù)的優(yōu)勢是非常明顯的：*，微觀面板數(shù)據(jù)包含了更多信息，例如企業(yè)的所有制、規(guī)模和出口等狀態(tài)，這些信息對于企業(yè)行為的研究*；第二，微觀面板數(shù)據(jù)同時包含了時間維度和個體維度，有助于解決計量經(jīng)濟(jì)學(xué)中的個體異質(zhì)性問題，更容易保證估計的*性；

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MOORE INDUSTRIES IPT2/4-20MA/3-27PSIG/35PSI-FA1 [DIN]

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