International Journal of Sustainable Lighting https://www.lightingjournal.org/index.php/path <p><strong>Introduction</strong></p> <p>The International Journal of Sustainable Lighting (IJSL) is the successor of the former Ingineria Iluminatului - Journal of Lighting Engineering, issued in Romania starting with 1999. IJSL aims to become an internationally recognized journal and to complement the existing prestigious lighting journals with an emphasis on emerging lighting issues including light pollution, chronobiology, sustainable buildings by extending its readers and authors to the worldwide lighting communities. The IJSL is an open access journal and is published bi-annaully in June, and December each year.</p> <p><strong>Aims and Scope</strong></p> <p>The International Journal of Sustainable Lighting is based on a change of paradigm from energy-efficiency to trans-disciplinarity (including energy, ecology, biology, green buildings, astronomy); it is a peer reviewed scientific journal encompassing experimental, theoretical and applied research results with respect to field of sustainable lighting. It provides a forum for architects, engineers, biologists and researchers involved in the design, operation, construction and utilization of lighting.</p> <p>The foremost objective is to give a quality online publication to our readers and authors. In this pursuit, our effort focuses upon quality publishing and an unquestioned commitment to the highest standards of professional and corporate ethics.</p> <p><strong>Editors-in-Chief</strong></p> <p>Jeong Tai Kim, Professor, Kyung Hee University, Republic of Korea</p> <p>Dorin Beu, Professor, Technical University of Cluj-Napoca, Romania</p> <p><strong>Executive Editor</strong></p> <p>Geun Young Yun, Associate Professor, Kyung Hee University, Republic of Korea</p> <p>&nbsp;</p> <p>&nbsp;</p> en-US <p>All International Journal of Sustainable Lighting (IJSL) content is Open Access, meaning it is accessible online without fee under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/4.0). &nbsp;For any reuse, redistribution, or reproduction of a work, users must clarify the license terms under which the work was produced. Neither the text itself nor the ideas presented in it may be used for commercial purposes.</p> gyyun@lightingjournal.org (Geun Young Yun) gyyun@lightingjournal.org (Geun Young Yun) Thu, 09 Jul 2020 22:13:00 +0000 OJS 3.2.0.3 http://blogs.law.harvard.edu/tech/rss 60 Computing spatial distribution of tube and louvre luminaires efficiency from their description https://www.lightingjournal.org/index.php/path/article/view/94 <p>Lighting computation requires photometry data that are not always available. Lacking photometry data limits lighting study to in situ measurement, luminaire measurement or use of similar luminaire photometry. This is not satisfactory, neither for convenience nor cost and accuracy reasons. Fitting the spatial distribution of luminaire efficiency to their description would allow lighting computations in this kind of situation. An efficiency spatial distribution model is proposed for grid and louvre tube luminaires, taking optic width, louvre between-axis and gloss as parameters. It is constructed over 12 measured efficiency spatial distributions and the corresponding luminaire descriptors. Even if optic and louvre gloss cannot be differentiated, this model fits to measurements and allows for computed irradiance close to experiments within <em>−</em>5% to +19%. In addition, luminaire descriptors can freely vary inside their experimental range and even be extrapolated.</p> Jean-Marc DENIEL Copyright (c) 2020 Jean-Marc DENIEL http://creativecommons.org/licenses/by-nc-nd/4.0 https://www.lightingjournal.org/index.php/path/article/view/94 Mon, 15 Jun 2020 00:00:00 +0000 Maps of light pollution in odd places https://www.lightingjournal.org/index.php/path/article/view/96 <p>Advances in remote sensing have proved to be highly valuable for the light pollution research and awareness raising. Maps based on night time satellite data can be used in communication campaigns aimed to improve the public and policy awareness about the extent and effects of light pollution and to justify appropriate management actions. However, visually appealing maps are also used in other communication settings. This article reviews different uses of light pollution maps and discusses the societal implications such uses. Based on examples of light pollution maps in different communication settings not directly related to light pollution debate the review proposes that the relatively wide popularity of light pollution maps may strengthen the impressions of artificially illuminated night environment as the normal baseline for human experience. This contributes to the loss of experience of the natural darkness possibly leading to generational amnesia complicating the management of light pollution. Multiple uses of light pollution maps and other visualizations should be taken into account when campaigns and policies aimed to support sustainable lighting are planned and implemented.</p> Jari Lyytimaki Copyright (c) 2020 Jari Lyytimaki http://creativecommons.org/licenses/by-nc-nd/4.0 https://www.lightingjournal.org/index.php/path/article/view/96 Thu, 09 Jul 2020 00:00:00 +0000