中文摘要：

技术创新差异是构成区域经济差异的内在原因。研究以专利申请授权量为测度指标，采用锡尔系数分解方法、探索性空间（ESDA）分析方法，对环渤海经济圈2001-2011年10年间区域技术创新存在的差异及其时空演化格局进行分析。研究结果表明：2001-2011年环渤海经济圈区域技术创新总体差异呈波浪式下降趋势，区间差异发展不均衡，山东半岛区内差异最大；环渤海经济圈区域技术创新集聚态势不明显，呈随机分布态势；环渤海经济圈区域技术创新水平呈现“两极分化”分布；环渤海经济圈区域技术创新热点演化总体格局相对稳定；区域技术创新增长热点跃迁明显。

英文摘要：

Differences of technological innovation constitute the internal cause of regional economic disparities. This paper makes an analysis on the existing differences of regional technological innovation as well as spatial-temporal evolution in Bo-hai Economic Circle from the year of 2001 to 2011 by applying the method of Theil decomposition and exploratory spatial data analysis （ESDA）. The results show that the overall difference of regional technological innovation in Bohai Economic Circle appears a downward wavy trend during the year of 2001 to 2011. It also shows uneven regional development, while the biggest difference is in Shandong Peninsula. The agglomeration trend of regional technological innovation in Bohai Eco-nomic Circle is not obvious and presents a trend of random distribution. The level of technological innovation presents a＆quot;po-larization＆quot; distribution in Bohai Economic Circle. The overall pattern of evolution of technological innovation hotspot is rela-tively stable in Bohai Economic Circle. The growth hotspots of regional technological innovation are obvious.