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Distribution characteristics of China's key cultural relic tourism resources and suggestions to its development and protection
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作者 YU Zhong-yuan LI Bo BI Hua 《Ecological Economy》 2010年第4期447-456,共10页
SPSS13.0 was used to process the data of the 1-6 batch of key cultural relic conservation units promulgated by the State Administration of Cultural Heritage of China;and multi-element evaluation method was used to cal... SPSS13.0 was used to process the data of the 1-6 batch of key cultural relic conservation units promulgated by the State Administration of Cultural Heritage of China;and multi-element evaluation method was used to calculate the composite distribution index.The spatial distribution of cultural relics of provinces in China can be divided into four grades,namely:very rich areas,rich areas,poor areas and very poor areas;the article analyzes the characteristics of cultural resources in spatial and temporal distribution.The paper holds that(1)the distribution of China's cultural relic tourism resources is relatively concentrated,different sharply from region to region,with more Han nation's heritage,less relics of the ethnic minorities;(2) Henan,Hebei,Shaanxi,Shanxi Province are the main regions with heavy distribution of cultural resources;(3) relics appeared in specific time periods in China's history.Ming and Qing Dynasties,Sui,Tang and Five Dynasties,Song,Liao and Jin,the Western Han,Shang and Zhou dynasties,the New Stone Age are the major periods producing more cultural relics.This paper also analyzes relationships of the emergence of cultural relics with production technology,specific historical process,specific geographical location,political system,religion,national culture,customs,architectural styles and techniques of the traditional cultural educational system.Finally,the paper discusses the development and protection of heritage. 展开更多
关键词 Cultural relic resources Distributional characteristics Development and protection
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E型热电偶动态响应试验方法及数学模型研究
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作者 高爱民 殳建军 +4 位作者 于国强 张卫庆 王成亮 喻欢 薛锐 《自动化与仪器仪表》 2019年第12期130-133,共4页
采用工控机、Data Acquisition 34970A数据采集仪与TP17650M干式炉设计了一套热电偶动态响应试验系统。重点试验研究了E型热电偶在不同工作温度下、不同偶丝直径与不同置入深度对该温度传感器动态特性的影响;在此基础上,采用MATLAB软件... 采用工控机、Data Acquisition 34970A数据采集仪与TP17650M干式炉设计了一套热电偶动态响应试验系统。重点试验研究了E型热电偶在不同工作温度下、不同偶丝直径与不同置入深度对该温度传感器动态特性的影响;在此基础上,采用MATLAB软件对试验数据进行了数学建模与研究,得出了E型热电偶动态响应数学模型,指出在实际测温时应该从工作温度、安装深度、热电偶直径等多方面进行选择,以确保测温的准确性和可靠性,间接地为该类型热电偶在设置"单点"保护阈值方面提供了必要的理论依据和实践指导,同时也为其它标准热电偶的动态响应特性试验和设置"单点"保护阈值方面提供了一定的借鉴作用。 展开更多
关键词 动态响应试验 E型热电偶 数学模型 “单点”保护
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