{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T01:59:36Z","timestamp":1772935176093,"version":"3.50.1"},"reference-count":71,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2020,2,6]],"date-time":"2020-02-06T00:00:00Z","timestamp":1580947200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Key Research and Development Plan of China","award":["2017YFB0503601"],"award-info":[{"award-number":["2017YFB0503601"]}]},{"name":"National Key Research and Development Plan of China","award":["2017YFB0503502"],"award-info":[{"award-number":["2017YFB0503502"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Urban nighttime leisure spaces (UNLSs), important urban sites of nighttime economic activity, have created enormous economic and social benefits. Both the physical features (e.g., location, shape, and area) and the social functions (e.g., commercial streets, office buildings, and entertainment venues) of UNLSs are important in UNLS mapping. However, most studies rely solely on census data or nighttime light (NTL) images to map the physical features of UNLSs, which limits UNLS mapping, and few studies perform UNLS mapping from a social function perspective. Point-of-interest (POI) data, which can reflect social activity functions, are needed. As a result, a novel methodological UNLS mapping framework, that integrates NTL images and POI data is required. Consequently, we first extracted high-NTL intensity and high-POI density areas from composite data as areas with high nightlife activity levels. Then, the POI data were analyzed to identify the social functions of leisure spaces revealing that nighttime leisure activities are not abundant in Beijing overall, the total UNLS area in Beijing is 31.08 km2, which accounts for only 0.2% of the total area of Beijing. In addition, the nightlife activities in the central urban area are more abundant than those in the suburbs. The main urban area has the largest UNLS area. Compared with the nightlife landmarks in Beijing established by the government, our results provide more details on the spatial pattern of nighttime leisure activities throughout the city. Our study aims to provide new insights into how multisource data can be leveraged for UNLS mapping to enable researchers to broaden their study scope. This investigation can also help government departments better understand the local nightlife situation to rationally formulate planning and adjustment measures.<\/jats:p>","DOI":"10.3390\/rs12030541","type":"journal-article","created":{"date-parts":[[2020,2,7]],"date-time":"2020-02-07T03:13:27Z","timestamp":1581045207000},"page":"541","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":62,"title":["Urban Nighttime Leisure Space Mapping with Nighttime Light Images and POI Data"],"prefix":"10.3390","volume":"12","author":[{"given":"Jiping","family":"Liu","sequence":"first","affiliation":[{"name":"School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China"},{"name":"Research Center of Government GIS, Chinese Academy of Surveying and Mapping, Beijing 100830, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3777-9244","authenticated-orcid":false,"given":"Yue","family":"Deng","sequence":"additional","affiliation":[{"name":"School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China"}]},{"given":"Yong","family":"Wang","sequence":"additional","affiliation":[{"name":"Research Center of Government GIS, Chinese Academy of Surveying and Mapping, Beijing 100830, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8399-3607","authenticated-orcid":false,"given":"Haosheng","family":"Huang","sequence":"additional","affiliation":[{"name":"Geographic Information Science (GIS), Department of Geography, University of Zurich\u2014Irchel Winterthurerstr., 190 CH-8057 Zurich, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4615-2029","authenticated-orcid":false,"given":"Qingyun","family":"Du","sequence":"additional","affiliation":[{"name":"School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China"}]},{"given":"Fu","family":"Ren","sequence":"additional","affiliation":[{"name":"School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China"}]}],"member":"1968","published-online":{"date-parts":[[2020,2,6]]},"reference":[{"key":"ref_1","unstructured":"Edginton, C.R., and Chen, P. (2008). Leisure as Transformation, Sagamore Publishing."},{"key":"ref_2","unstructured":"Michael, J., and Sara, F. (2012). Leisure Enhancement, Sagamore Publishing."},{"key":"ref_3","unstructured":"Corbusier, L., and Eardley, A. (1973). The Athens Charter, Grossman Publishers."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"225","DOI":"10.3828\/tpr.69.3.2357285302gl032l","article-title":"Creating the Charter of Athens: CIAM and the functional city, 1933-43","volume":"69","author":"Gold","year":"1998","journal-title":"Town Plan. Rev."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"638","DOI":"10.1016\/j.scs.2018.05.015","article-title":"Quantifying the spatiality of urban leisure venues in Wuhan, Central China-GIS-based spatial pattern metrics","volume":"40","author":"Jing","year":"2018","journal-title":"Sustain. Cities Soc."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"351","DOI":"10.1016\/j.jenvman.2006.04.003","article-title":"Socio-economic driving forces of land-use change in Kunshan, the Yangtze River Delta economic area of China","volume":"83","author":"Long","year":"2007","journal-title":"J. Env. Manag."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"843","DOI":"10.1016\/S0140-6736(11)61878-3","article-title":"Urbanisation and health in China","volume":"379","author":"Gong","year":"2012","journal-title":"Lancet"},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Fu, H., Shao, Z., Fu, P., and Cheng, Q. (2017). The dynamic analysis between urban nighttime economy and urbanization using the DMSP\/OLS nighttime light data in China from 1992 to 2012. Remote Sens., 9.","DOI":"10.3390\/rs9050416"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1080\/11745398.2012.726189","article-title":"Parks as leisure spaces for older adults\u2019 daily wellness: a Korean case study","volume":"15","author":"Yang","year":"2012","journal-title":"Ann. Leis. Res."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"301","DOI":"10.3130\/jaabe.4.301","article-title":"A Study on Present Shanghai Urban Inhabitants\u2019 Leisure Activities and Sites","volume":"4","author":"Song","year":"2005","journal-title":"J. Asian Arch. Build. Eng."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"5","DOI":"10.1080\/02614367.2010.506650","article-title":"Leisure: The importance of being inconsequential","volume":"30","author":"Roberts","year":"2011","journal-title":"Leis. Stud."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"339","DOI":"10.1080\/0811114032000147395","article-title":"Leisure, public space and quality of life in the urban environment","volume":"21","author":"Lloyd","year":"2003","journal-title":"Urban Policy Res."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Liu, Y., Jing, Y., Cai, E., Cui, J., Zhang, Y., and Chen, Y. (2017). How Leisure Venues Are and Why? A Geospatial Perspective in Wuhan, Central China. Sustainability, 9.","DOI":"10.3390\/su9101865"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1302","DOI":"10.3390\/ijerph7041302","article-title":"Spatial modeling in environmental and public health research","volume":"7","author":"Jerrett","year":"2010","journal-title":"Int. J. Env. Res. Public Health"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1078","DOI":"10.1080\/00045608.2013.792177","article-title":"Beyond space (as we knew it): Toward temporally integrated geographies of segregation, health, and accessibility: Space-time integration in geography and GIScience","volume":"103","author":"Kwan","year":"2013","journal-title":"Ann. Assoc. Am. Geogr."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1069","DOI":"10.1080\/13676261.2013.793786","article-title":"Holding back the beers: maintaining \u2018youth\u2019identity within the British night-time leisure economy","volume":"16","author":"Smith","year":"2013","journal-title":"J. Youth Stud."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1399","DOI":"10.1177\/00187267035611006","article-title":"Work at leisure and leisure at work: A study of the emotional labour of tour reps","volume":"56","author":"Guerrier","year":"2003","journal-title":"Hum. Relat."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"05014009","DOI":"10.1061\/(ASCE)UP.1943-5444.0000204","article-title":"Gradient analysis of urban construction land expansion in the Chongqing urban area of China","volume":"141","author":"Cao","year":"2014","journal-title":"J. Urban Plan. Dev."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Kim, Y.L. (2019). Data-driven approach to characterize urban vitality: how spatiotemporal context dynamically defines Seoul\u2019s nighttime. Int. J. Geogr. Inf. Sci., 1\u201322.","DOI":"10.1080\/13658816.2019.1694680"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"340","DOI":"10.1080\/01490400.2014.916971","article-title":"The imperative of leisure justice research","volume":"36","author":"Henderson","year":"2014","journal-title":"Leis. Sci."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"325","DOI":"10.1080\/01490400.2014.916961","article-title":"Leisure research to enhance social justice","volume":"36","author":"Stewart","year":"2014","journal-title":"Leis. Sci."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"3057","DOI":"10.3390\/rs5063057","article-title":"Potential of NPP-VIIRS Nighttime Light Imagery for Modeling the Regional Economy of China","volume":"5","author":"Xi","year":"2013","journal-title":"Remote Sens."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"143","DOI":"10.1016\/j.compenvurbsys.2018.09.005","article-title":"Where to go and what to do: Extracting leisure activity potentials from Web data on urban space","volume":"73","author":"Scheider","year":"2019","journal-title":"Comput. Env. Urban Syst."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"8589","DOI":"10.1073\/pnas.1017031108","article-title":"Using luminosity data as a proxy for economic statistics","volume":"108","author":"Chen","year":"2011","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_25","unstructured":"Ballatore, A. (2014). The search for places as emergent aggregates. Spatial Search-Specialist Meeting, Center for Spatial Studies, University of California Santa Barbara."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"652","DOI":"10.1080\/2150704X.2014.953263","article-title":"Diverse relationships between Suomi-NPP VIIRS night-time light and multi-scale socioeconomic activity","volume":"5","author":"Ma","year":"2014","journal-title":"Remote Sens. Lett."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"van der Zee, E., van der Borg, J., and Vanneste, D. (2017). The destination triangle: Toward relational management. Knowledge Transfer to and within Tourism: Academic, Industry and Government Bridges, Emerald Publishing.","DOI":"10.1108\/S2042-144320170000008011"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"619","DOI":"10.1016\/j.sbspro.2013.11.065","article-title":"Urban Community Perception on Nighttime Leisure Activities in Improving Public Park Design","volume":"105","author":"Ngesan","year":"2013","journal-title":"Procedia Soc. Behav. Sci."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1016\/j.emospa.2014.12.003","article-title":"Comfortable and safe spaces? Gender, sexuality and \u2018race\u2019 in night-time leisure spaces","volume":"14","author":"Held","year":"2015","journal-title":"Emot. Space Soc."},{"key":"ref_30","first-page":"162","article-title":"Tourism analytics with massive user-generated content: A case study of Barcelona","volume":"4","year":"2015","journal-title":"J. Destin. Mark. Manag."},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Stevenson, D. (2006). The arts and entertainment: Situating leisure in the creative economy. A Handbook of Leisure Studies, Springer.","DOI":"10.1057\/9780230625181_21"},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Liu, H., and Da, S. (2019). The relationships between leisure and happiness\u2014A graphic elicitation method. Leis. Stud., 1\u201320.","DOI":"10.1080\/02614367.2019.1575459"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"139","DOI":"10.1016\/j.iatssr.2012.09.001","article-title":"Quantifying the impact of road lighting on road safety\u2014A New Zealand Study","volume":"36","author":"Jackett","year":"2013","journal-title":"IATSS Res."},{"key":"ref_34","unstructured":"Donnelly, P.G. (2016, May 23). Newman, Oscar: Defensible Space Theory. Available online: https:\/\/ecommons.udayton.edu\/soc_fac_pub\/30\/."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"439","DOI":"10.1177\/0042098013505652","article-title":"Fear of crime and affective ambiguities in the night-time economy","volume":"52","author":"Brands","year":"2015","journal-title":"Urban Stud."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"102491","DOI":"10.1016\/j.jtrangeo.2019.102491","article-title":"Built environment and leisure satisfaction: The role of commute time, social interaction, and active travel","volume":"80","author":"Mouratidis","year":"2019","journal-title":"J. Transp. Geogr."},{"key":"ref_37","doi-asserted-by":"crossref","unstructured":"Crawford, A., and Flint, J. (2009). Urban Safety, Anti-Social Behaviour and the Night-Time Economy, Sage Publications.","DOI":"10.1177\/1748895809343390"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"959","DOI":"10.1016\/j.sbspro.2012.08.097","article-title":"Night time social behavior in urban outdoor spaces of Shah Alam","volume":"50","author":"Ngesan","year":"2012","journal-title":"Procedia-Soc. Behav. Sci."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"138","DOI":"10.1016\/j.tourman.2004.06.017","article-title":"Shopping and tourist night markets in Taiwan","volume":"27","author":"Hsieh","year":"2006","journal-title":"Tour. Manag."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"452","DOI":"10.1016\/j.sbspro.2015.01.008","article-title":"Place identity of nighttime urban public park in Shah Alam and Putrajaya","volume":"170","author":"Ngesan","year":"2015","journal-title":"Procedia-Soc. Behav. Sci."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1080\/11745398.2008.9686787","article-title":"Urban Development and the Leisure Dilemma: A case study of leisure and recreation in urban residential estates in the Lower Hunter, New South Wales","volume":"11","author":"Jenkins","year":"2008","journal-title":"Ann. Leis. Res."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"477","DOI":"10.1016\/j.egypro.2011.03.083","article-title":"The development of urban night tourism based on the nightscape lighting projects\u2014A Case Study of Guangzhou","volume":"5","author":"Guo","year":"2011","journal-title":"Energy Procedia"},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"1373","DOI":"10.1080\/014311697218485","article-title":"Relation between satellite observed visible-near infrared emissions, population, economic activity and electric power consumption","volume":"18","author":"Elvidge","year":"1997","journal-title":"Int. J. Remote Sens."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"322","DOI":"10.1016\/j.worlddev.2014.08.017","article-title":"Monitoring Economic Development from Space: Using Nighttime Light and Land Cover Data to Measure Economic Growth","volume":"66","author":"Keola","year":"2015","journal-title":"World Dev."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"1003","DOI":"10.1080\/01431160802430693","article-title":"Modelling the population density of China at the pixel level based on DMSP\/OLS non-radiance-calibrated night-time light images","volume":"30","author":"Zhuo","year":"2009","journal-title":"Int. J. Remote Sens."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"855","DOI":"10.1080\/01431160500181861","article-title":"DMSP\/OLS night-time light imagery for urban population estimates in the Brazilian Amazon","volume":"27","author":"Amaral","year":"2006","journal-title":"Int. J. Remote Sens."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"173","DOI":"10.1016\/j.rse.2014.03.004","article-title":"A cluster-based method to map urban area from DMSP\/OLS nightlights","volume":"147","author":"Zhou","year":"2014","journal-title":"Remote Sens. Environ."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1016\/j.rse.2005.02.002","article-title":"Spatial analysis of global urban extent from DMSP-OLS night lights","volume":"96","author":"Small","year":"2005","journal-title":"Remote Sens. Environ."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"5661","DOI":"10.1016\/j.enpol.2010.05.014","article-title":"Estimating rural populations without access to electricity in developing countries through night-time light satellite imagery","volume":"38","author":"Doll","year":"2010","journal-title":"Energy Policy"},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"4443","DOI":"10.1080\/01431160903277464","article-title":"Estimating energy consumption from night-time DMPS\/OLS imagery after correcting for saturation effects","volume":"31","author":"Letu","year":"2010","journal-title":"Int. J. Remote Sens."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"1417","DOI":"10.1111\/gcb.12166","article-title":"Artificial light pollution: are shifting spectral signatures changing the balance of species interactions?","volume":"19","author":"Davies","year":"2013","journal-title":"Glob. Chang. Biol."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"e1600377","DOI":"10.1126\/sciadv.1600377","article-title":"The new world atlas of artificial night sky brightness","volume":"2","author":"Falchi","year":"2016","journal-title":"Sci. Adv."},{"key":"ref_53","first-page":"243","article-title":"Estimation of virtual water contained in international trade products using nighttime imagery","volume":"18","author":"Zhao","year":"2012","journal-title":"Int. J. Appl. Earth Obs. Geoinf."},{"key":"ref_54","doi-asserted-by":"crossref","unstructured":"Yang, X., Ye, T., Zhao, N., Chen, Q., Yue, W., Qi, J., Zeng, B., and Jia, P. (2019). Population Mapping with Multisensor Remote Sensing Images and Point-Of-Interest Data. Remote Sens., 11.","DOI":"10.3390\/rs11050574"},{"key":"ref_55","doi-asserted-by":"crossref","unstructured":"Hu, T., Yang, J., Li, X., and Peng, G. (2016). Mapping Urban Land Use by Using Landsat Images and Open Social Data. Remote Sens., 8.","DOI":"10.3390\/rs8020151"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"436","DOI":"10.1016\/j.isprsjprs.2018.10.010","article-title":"Social functional mapping of urban green space using remote sensing and social sensing data","volume":"146","author":"Chen","year":"2018","journal-title":"ISPRS J. Photogramm. Remote Sens."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"512","DOI":"10.1080\/00045608.2015.1018773","article-title":"Social sensing: A new approach to understanding our socioeconomic environments","volume":"105","author":"Liu","year":"2015","journal-title":"Ann. Assoc. Am. Geogr."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"150","DOI":"10.1016\/j.rse.2017.03.003","article-title":"The impact of seasonal changes on observed nighttime brightness from 2014 to 2015 monthly VIIRS DNB composites","volume":"193","author":"Levin","year":"2017","journal-title":"Remote Sens. Environ."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.rse.2014.03.019","article-title":"A new source for high spatial resolution night time images\u2014The EROS-B commercial satellite","volume":"149","author":"Levin","year":"2014","journal-title":"Remote Sens. Environ."},{"key":"ref_60","doi-asserted-by":"crossref","unstructured":"Jiang, W., He, G., Long, T., Guo, H., Yin, R., Leng, W., Liu, H., and Wang, G. (2018). Potentiality of using Luojia 1-01 nighttime light imagery to investigate artificial light pollution. Sensors, 18.","DOI":"10.3390\/s18092900"},{"key":"ref_61","doi-asserted-by":"crossref","unstructured":"Yuan, J., Zheng, Y., and Xie, X. (2012, January 12\u201316). Discovering regions of different functions in a city using human mobility and POIs. Proceedings of the 18th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, Beijing, China.","DOI":"10.1145\/2339530.2339561"},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"263","DOI":"10.1080\/00401706.1999.10485676","article-title":"Applied smoothing techniques for data analysis","volume":"41","author":"Deveaux","year":"1999","journal-title":"Technometrics"},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"2916","DOI":"10.1214\/10-AOS799","article-title":"Kernel density estimation via diffusion","volume":"38","author":"Botev","year":"2010","journal-title":"Ann. Stat."},{"key":"ref_64","doi-asserted-by":"crossref","unstructured":"Silverman, B.W. (2018). Density Estimation for Statistics and Data Analysis, Routledge.","DOI":"10.1201\/9781315140919"},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"122","DOI":"10.1016\/j.jtrangeo.2017.05.001","article-title":"Uncovering the spatiotemporal patterns of CO2 emissions by taxis based on Individuals\u2019 daily travel","volume":"62","author":"Zhao","year":"2017","journal-title":"J. Transp. Geogr."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"6305","DOI":"10.1109\/TGRS.2017.2725917","article-title":"A new approach for detecting urban centers and their spatial structure with nighttime light remote sensing","volume":"55","author":"Chen","year":"2017","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_67","doi-asserted-by":"crossref","unstructured":"Deng, Y., Liu, J., Liu, Y., and Luo, A. (2019). Detecting Urban Polycentric Structure from POI Data. ISPRS Int. J. Geo-Inf., 8.","DOI":"10.3390\/ijgi8060283"},{"key":"ref_68","doi-asserted-by":"crossref","first-page":"2041","DOI":"10.1080\/13658816.2015.1038719","article-title":"A localized contour tree method for deriving geometric and topological properties of complex surface depressions based on high-resolution topographical data","volume":"29","author":"Wu","year":"2015","journal-title":"Int. J. Geogr. Inf. Sci."},{"key":"ref_69","doi-asserted-by":"crossref","first-page":"301","DOI":"10.1007\/s10707-012-0153-z","article-title":"Multi-level representation of terrain features on a contour map","volume":"17","author":"Guilbert","year":"2013","journal-title":"GeoInformatica"},{"key":"ref_70","doi-asserted-by":"crossref","first-page":"42","DOI":"10.1016\/j.compenvurbsys.2017.01.005","article-title":"Measuring morphological polycentricity-A comparative analysis of urban mass concentrations using remote sensing data","volume":"64","author":"Wurm","year":"2017","journal-title":"Comput. Environ. Urban Syst."},{"key":"ref_71","doi-asserted-by":"crossref","unstructured":"Samuel, N. (2005). Leisure participation and time-use surveys: France. Free Time and Leisure Participation: International Perspectives, CABI Publishing.","DOI":"10.1079\/9780851996202.0075"}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/12\/3\/541\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T08:55:29Z","timestamp":1760172929000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/12\/3\/541"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,2,6]]},"references-count":71,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2020,2]]}},"alternative-id":["rs12030541"],"URL":"https:\/\/doi.org\/10.3390\/rs12030541","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,2,6]]}}}