Regional Trajectories of Technological Change in U.S. Manufacturing

科技的地区差异通常被解释为创新速度的差异。然而，由于模仿和企业的进入和退出，生产也会发生变化。拟议的研究将涉及四个目标。这些是为了衡量美国在一系列紧密定义的行业中生产技术的区域差异程度，检查区域生产技术的差异如何随时间变化，估计影响区域技术的四个主要因素在空间上的相对重要性，最后，测试一系列关于技术变革、技术多样性和经济绩效的假设。性能的描述性度量和方差的多变量分析将用于测试围绕诱导创新和技术变革的进化账户的许多具体假设。

University of California, Los Angeles Regional differences in technology are conventionally explained by variation in the pace of innovation. Yet production varies also as a result of imitation and firm entry and exit. The proposed research will address four objectives. These are to measure the extent of regional differences in production techniques in the U.S. across a series of closely defined industries, to examine how variance in regional production technology moves over time, to estimate the relative importance of the four major factors influencing regional technology over space and ,finally, to test a series of hypotheses linking technical change, technological variety and economic performance. Descriptive measures of performance and a multivariate analysis of variance will be used to test numerous specific hypotheses surrounding induced innovation and evolutionary accounts of technical change.