id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
fbem-31700	Li, Dan	A Study on the Spatio - Temporal Changes of Urban Expansion in Shaanxi Province Based on Nighttime Light Remote Sensing Data	2025	6	.pdf	application/pdf	5104	234	51	Introduction Since the reform and opening up, China's urbanization has accelerated significantly, with urban areas continuously expanding outward. “A technique for using composite DMSP/OLS ‘City Lights’ satellite data to map urban area”, Remote Sensing of Environment, Vol. 61, pp. 361-370, 1997.	cache/fbem-31700.pdf	txt/fbem-31700.txt