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The circadian rhythm connected to natural light stimulates psychological states and hormonal changes. As such, natural light is a major environmental factor that affects humans' psychological and physiological conditions. To create healthy and comfortable lighting environments in windowless space such as a basement where no natural light can enter, the daily, monthly, and seasonal cycles of natural light need to be represented by means of artificial lightings. Upon certain situations related to purposes of space and user behaviors, lighting control technology is required for appropriate lighting environments. To this end, this study designs and implements a natural light reproduction system based on context awareness in wireless sensor networks to restructure lighting environments in adaptation to the changing situation of the occupant. As the object space in the experiment, a clothing shop to occupy the largest portion of underground space was selected. The scenarios were selected for each time period in connection with the behaviors of the seller who resided there for a long time. The suggested system's performance was evaluated in terms of conformity with natural light, comfort, and energy-saving effect. <\/jats:p>","DOI":"10.1155\/2015\/781584","type":"journal-article","created":{"date-parts":[[2015,9,27]],"date-time":"2015-09-27T21:03:50Z","timestamp":1443387830000},"page":"781584","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["Design and Implementation of the Natural Light Reproduction System Based on Context Awareness in WSN"],"prefix":"10.1177","volume":"11","author":[{"given":"Yun-Joo","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Computer Science and Engineering, Kongju National University, Cheonan 331-717, Republic of Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3992-3297","authenticated-orcid":false,"given":"Sook-Youn","family":"Kwon","sequence":"additional","affiliation":[{"name":"Green Energy Technology Research Center, Kongju National University, Cheonan 331-717, Republic of Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7169-8969","authenticated-orcid":false,"given":"Jae-Hyun","family":"Lim","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Engineering, Kongju National University, Cheonan 331-717, Republic of Korea"}]}],"member":"179","published-online":{"date-parts":[[2015,9,27]]},"reference":[{"key":"B1-2015-781584","volume-title":"Development of the Construction for Underground Living Space","author":"Kim S.","year":"1996"},{"key":"B2-2015-781584","unstructured":"Kwinam P.Study on people's uses of and satisfaction with the underground spaces in the downtowns: focused on the underground arcades in seoul [M.S. thesis]2010Seoul, Republic of KoreaGraduate School of Kyung Hee University"},{"key":"B3-2015-781584","doi-asserted-by":"publisher","DOI":"10.4028\/www.scientific.net\/AMM.507.138"},{"issue":"1","key":"B4-2015-781584","volume":"25","author":"Choi W.-Y.","year":"2005","journal-title":"Proceeding of Architectural Institute of Korea"},{"issue":"4","key":"B5-2015-781584","first-page":"63","volume":"5","author":"Vaezizadeh F.","year":"2013","journal-title":"International Journal on Technical and Physical Problems of Engineering"},{"key":"B6-2015-781584","unstructured":"InTae K.A study of control algorithm for development of an adjustable CCT LED lighting system in architectural space [M.S. thesis]2012Seoul, Republic of KoreaDepartment of Architecture, Graduate School of Sejong University"},{"key":"B7-2015-781584","doi-asserted-by":"publisher","DOI":"10.1016\/j.apenergy.2013.08.050"},{"key":"B8-2015-781584","doi-asserted-by":"publisher","DOI":"10.1080\/15502724.2013.855614"},{"key":"B9-2015-781584","doi-asserted-by":"publisher","DOI":"10.5207\/jieie.2011.25.11.001"},{"issue":"3","key":"B10-2015-781584","volume":"10","author":"Cheol-Geun J.","year":"2006","journal-title":"Optical Science and Technology"},{"key":"B11-2015-781584","doi-asserted-by":"publisher","DOI":"10.1007\/978-88-470-5388-5_2"},{"issue":"3","key":"B12-2015-781584","first-page":"3","volume":"5","author":"Hyo-Seong L.","year":"2006","journal-title":"The Journal of Korean Solar Energy Society"},{"key":"B13-2015-781584","doi-asserted-by":"publisher","DOI":"10.1016\/j.jenvp.2014.03.005"},{"key":"B14-2015-781584","unstructured":"Yoon K. 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