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Relevant bibliographies by topics / Lighting source

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Academic literature on the topic 'Lighting source'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Lighting source"

1

Kim, Eun-Il, and Dong-Hoon Hyun. "Line Light Source Lighting Module." Journal of the Korean Society of Manufacturing Technology Engineers 28, no. 1 (2019): 62–70. http://dx.doi.org/10.7735/ksmte.2019.28.1.62.

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Wang, B., Sandy To, C. F. Chueng, and W. K. Wang. "Lighting Design of Extended Light Source." Key Engineering Materials 552 (May 2013): 103–7. http://dx.doi.org/10.4028/www.scientific.net/kem.552.103.

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A workflow of LED lighting design will be discussed in the paper. And it will analyze the influence of different LED die size distribution. It will present the design method how to design from spot source to line source and then to extended source in the mathematic theory. It means to research from 2D to 3D design about LED light source.

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Worthey, James A. "Lighting Quality and Light Source Size." Journal of the Illuminating Engineering Society 19, no. 2 (1990): 142–48. http://dx.doi.org/10.1080/00994480.1990.10747974.

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Kotulski, Leszek, Artur Basiura, Igor Wojnicki, and Sebastian Siuchta. "Lighting System Modernization as a Source of Green Energy." Energies 14, no. 10 (2021): 2771. http://dx.doi.org/10.3390/en14102771.

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The use of formal methods and artificial intelligence has made it possible to automatically design outdoor lighting. Quick design for large cities, in a matter of hours instead of weeks, and analysis of various optimization criteria enables to save energy and tune profit stream from lighting retrofit. Since outdoor lighting is of a large scale, having luminaires on every street in urban areas, and since it needs to be retrofitted every 10 to 15 years, choosing proper parameters and light sources leads to significant energy savings. This paper presents the concept and calculations of Levelized Cost of Electricity for outdoor lighting retrofit. It is understood as cost of energy savings, it is in the range from 23.06 to 54.64 EUR/MWh, based on real-world cases. This makes street and road lighting modernization process the best green “energy source” if compared with the 2018 Fraunhofer Institute cost of electricity renewable energy technologies ranking. This indicates that investment in lighting retrofit is more economically and ecologically viable than investment in new renewable energy sources.

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Tan Nhut, Duong, and Mai Thi Ngoc Huong. "Source for Gloxinia (Sinningia Spp.) and Potato (Solanum Tuberosum) Micropropagation." ASEAN Journal on Science and Technology for Development 23, no. 4 (2017): 333. http://dx.doi.org/10.29037/ajstd.123.

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An efficient lighting system (Compact 3U) was successfully applied to the micropropagation of gloxinia and potato plants. To compare the in vitro growth of plantlets under Neon and Compact 3U lighting systems, gloxinia and potato shoots were cultured on suitable media at different light intensities: (1) 45 µmol m-2s-1 (under Neon lighting system as a control); (2) 45 µmol m-2s-1, (3) 60µmol m-2s-1, and (4) 75 µmol m-2s-1 (under Compact 3U lighting systems). The results obtained after 3 weeks of in vitro culture and 6 weeks of acclimatization in a greenhouse showed that the growth of plantlets cultured under the Compact 3U system was better than that under Neon lighting system. The Compact 3U lighting source had a highly significant effect on the growth and development of gloxinia and potato plantlets. Besides, the data in our study also indicated that gloxinia and potato plantlets adapted differently to different lighting sources and light intensities.

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Goh, Hui Hwang, Sy yi Sim, Jamil Shaari, et al. "A Review of Lightning Protection System - Risk Assessment and Application." Indonesian Journal of Electrical Engineering and Computer Science 8, no. 1 (2017): 221. http://dx.doi.org/10.11591/ijeecs.v8.i1.pp221-229.

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<p> A lightning strike could bring thousands mega-ampere of current in a blink of eyes. As a result, a failure of grounding the strike may cause serious damage to the home and industrial appliances and gadgets. Hence, a lightning protection system is essential to the current transmission system. Lighting is a natural phenomenon that is unavoidable. Hence, the study of the properties and characteristics of lightning is a must in designing lighting protection system. Every application has different criteria to be fulfilled. The type of lighting protection system is categorized based on the location and user. The different of location is a public area, transportation system, power system transmission and generation system which include renewable energy source. Each area can conclude different level of protection. This paper is assessing the possibility and probability of transient impact on all applications including, public area, power system line, and generating system. The review includes countermeasure which addressed few steps to determine the effect of lightning and countermeasure of protection.</p>

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Baran, Krzysztof, Antoni Różowicz, Henryk Wachta, and Sebastian Różowicz. "Modeling of Selected Lighting Parameters of LED Panel." Energies 13, no. 14 (2020): 3583. http://dx.doi.org/10.3390/en13143583.

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Semiconductor light sources are currently the fastest growing and most energy efficient group of light sources used in lighting technology. Their lighting parameters, such as luminous flux, correlated color temperature and color rendering index depend on the value of the forward current, as well as the temperature of the junction. LED source manufacturers usually specify, in data sheets, the effect of junction temperature and forward current on the luminous flux for individual light sources. The difficulty, however, is the correct determination of temperature and then lighting parameters, by simulation methods for multi-source lighting systems. Determining the junction temperature which affects lighting parameters is particulary important in the case of LED panels and luminaires, where thermally coupled LED sources shaping the output lighting parameters are in close proximity to each other. Additionally, other factors influencing the temperature distribution of sources, such as the design and geometry of the cooling system, the design of the printed circuit and thermal interface material used, should be considered. The article is a continuation of the publication in this journal where the influence of factors influencing the temperature distribution of the LED panel is presented. The purpose of the research in this article was to confirm the possibility of using CFD (Computational Fluid Dynamics) software, as well as to determine the accuracy of the results obtained in the temperature analysis of the multi-source LED panel, and in determining the output lighting parameters of the LED panel based on it. In this article, based on previously published research, a LED panel model with a cooling system was made, and then the CFD software determined the junction temperature of all light sources. The determined temperature of the LED sources constituted the basis for determining the output lighting parameters of the panel: luminous flux, color temperature and color rendering index. The simulation results were verified by real measurements on the constructed LED panel prototype. The LED panel temperature difference between the simulation results and the real results on the prototype did not exceed 5%. Moreover, the error of lighting parameters between the simulation results obtained and the results on the LED panel prototype in the worst case was 4.36%, which proves the validity and accuracy of simulation studies.

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Agung, IGAP Raka, and IGAK Diafari Djuni H. "Design of Lighting Control with RTC Timer and SMS Using Microcontroller." Journal of Electrical, Electronics and Informatics 1, no. 1 (2017): 24. http://dx.doi.org/10.24843/jeei.2017.v01.i01.p05.

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The purpose of this research is to make the switch to turn on and off lighting with time can be set based on certain conditions. Controller utilizes Arduino UNO microcontroller with input from DS1307 RTC IC, photodiode, IComSat V1.1 with the output of LCD display and lighting switch. In this study realized photodiode sensor to detect dark and light illumination, DS1307 RTC IC as a source of real-time equal to the time actually, IComSat v1.1 SIM900 GSM/GPRS Shield for Arduino to communicate with HP via SMS, switch circuit and drivers for turn on and off the load of lighting and Arduino UNO with programs that has been put into flash memory. Research results obtained are supporting components of the equipment control to turn on and off of lighting utilizing microcontroller can be realized and are functioning in accordance with the plan. Two lightings can already turn on and off based on the input time of the RTC (the default) and on off status can be checked by SMS. Both lightings can already be turn on and off by SMS messages sent from mobile HP and received by microconroller (IComSat) and feedback lighting conditions is already accepted by mobile HP corresponds to on and off lights condition.

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AyersBEng, M. J., and D. J. Carter. "Remote source electric lighting systems: A review." Lighting Research and Technology 27, no. 1 (1995): 1–15. http://dx.doi.org/10.1177/14771535950270010501.

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Qi, N., M. J. Ayers, G. Butcher, and D. J. Carter. "Discrete emitters for remote-source lighting systems." Lighting Research and Technology 28, no. 1 (1996): 53–58. http://dx.doi.org/10.1177/14771535960280010401.

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Dissertations / Theses on the topic "Lighting source"

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Ayers, Mark John. "The simulation of remote source electric lighting systems." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364262.

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Rocchi, Elisa. "Dynamic Digitalisation in the Lighting Industry. Present Technology and Future Scenarios in the Design of Smart Urban Lighting." Thesis, KTH, Ljusdesign, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280045.

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In the last decade, major developments in mobile and sensor network technologies, as well as in more secure data management solutions allowed an accelerated expansion of the Internet of Things (IoT) in different markets, including the smart lighting technology. These technological developments, currently shaping the lighting industry, have the power to enhance the liveability of spaces and improve people’s lives. However, in this thesis it is highlighted how such technological evolution is often marked by an engineering character over a design approach. In particular, this thesis focuses on smart lighting technology applied in urban environments and how the integration of information technology into the physical realm can enhance space quality and empower citizens’ participation. The main body is divided into two sections: The first part provides an overview of the technological solutions that are currently being implemented in the lighting design field. The second part advances a schematic projection of future trends, starting from the analysis of what is being developed in other related disciplines, such as urban planning and visual arts. Both parts are literature-based. The final section features the opinion of noteworthy lighting professionals about possible real-life applications of smart lighting technology. Since this thesis has been written during the Covid-19 pandemic, the author decided to include speculations regarding how this event might influence the future of urban lighting.

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Slívová, Marta. "Design řady LED svítidel." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229797.

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This master thesis is a design study of LED interior light units. Aim of the study is to design set of three luminaire types – office table light, standard lamp and a pendant luminaire. All three lights are following the same design. Curve is the main shape for this light set. LED, called light source of the future, is supposed to be the only light source at all three units. LEDs were chosen as the contemporary most efficient and modern light source. Use of LEDs has many positive economical and social aspects. Use of innovative design, most recent technologies and modern shapes brings new inspiration and variety into current interior light world. Development of light systems study is mapping light units history from the beginning into presence. It brings interesting look into interior light history.

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Nicol, David Brackin. "A Novel Solid State General Illumination Source." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14032.

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A novel solid state illumination source has been developed. A two terminal dual LED has been created with the ability to control the relative intensities of the two emission peaks by varying drive current. Doping profiles have been used to extend the dynamic range of the dual LED over other reported devices. Operation of the dual LEDs is explained as a function of drive current. In addition, novel use of phosphor mixtures allows the creation of a broadband spectral power distribution that can be varied using a dual LED as an excitation source. Combinations of phosphors that have varied excitation spectra provide the ability to selectively excite different phosphors with the different LED emission peaks. First and second generations of the two terminal dual LED and the phosphor combination are discussed. The final source has the ability to mimic the light of a blackbody radiator over a range of 3200 K - 5300 K. The development of a three terminal dual LED as a pump source was prohibited by the need for a III-nitride tunnel junction, that proved unattainable in the scope of this work. However, several novel doping schemes were investigated toward this end. Finally, a circadian light source has also been developed that can affect physiological changes in humans, and a light box for entrainment of circadian rhythms in rats has been built.

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Varmuža, Jan. "Stanovení spotřeby elektrické energie pro veřejné osvětlení." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219079.

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The thesis deals with analysis of the public lighting system from the point of view of light sources and luminaries. It focuses on the specifics of the lighting systems such as lighting for pedestrian crossings or decorative lighting. It analyzes the energy consumption depending on daylight and how it manifests a shift sunrise and sunset on the consumption of electricity. The work clarifies how the model can be simplified sunrise, sunset for the entire Czech Republic. Based on the distribution of municipalities with population over 10,000 and modeling of sunrise and sunset calculation is carried out power consumption of lighting systems and compared to the total consumption of the Czech Republic. Simplification is an estimate of the consumption of electricity to villages to 10 000 people on the basis of the estimate, the final consumption of electricity for public lighting for the entire Czech Republic.

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Krishnan, Srivatsava. "Mechanoluminescent and Phosphorescent Paint Systems for Automotive and Naval Applications." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437262259.

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Krbal, Michal. "Tvorba znalostní databáze pro světelnou techniku s možností expertního zpracování dotazů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-233617.

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This presented thesis is focused on the complex description of creation the database system for the lighting. The important static and dynamic parameters of light sources and luminaires are listed in the first part of thesis. These parameters are complemented by the measured values and their relationships. The next chapters of thesis are focused to description of obtained parameters, structural design, historical and expected development of individual representatives of light sources. In the following sections are described current state of used data formats of luminaires and the possibilities for describing of light sources. The database systems are created as a result of this thesis. These databases are used for collecting, sorting, searching and sophisticate comparison of the parameters of light sources and luminaires.

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Koždoň, Jakub. "Světelný zdroj s nastavitelnou intenzitou osvětlení." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220973.

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This work is focused on description how the light impact human live, description of light sources and finally design and construction of light source with adjustable colour temperature and luminous flux. In introduction is mentioned the process of vision and how the light impact humans. In next part is characterization of currently used light sources, their construction, properties, benefits and drawback with their main parameters. Important part of this chapter is more extensive description of light emitting diodes with their operational parameters. The last two parts is focused on design and measuring the parameters of created light source with adjustable colour temperature and luminous flux and evaluating the results.

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Novotný, Tomáš. "Změny spektra zářivého toku světelných zdrojů v závislosti na napětí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217599.

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The master’s thesis consists of two parts. The first part describes base quantities of lighting engineering, basics of the electrical energy transformation to the light energy, laws of the thermal radiation and characteristics of incandescence and discharge light sources used for general illumination. This part concludes with a theoretical analysis of influence of power supply on the parameters of light source’s luminous flux. The second part of the thesis deals with the draft and configuration of a workplace for measuring spectral radiation of light sources depending on power supply. The last part of the thesis is created by the evaluation of spectral radiation and other light parameters changes according to the light source’s power supply changes.

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Houdek, Michal. "Energetická a provozní optimalizace systému veřejného osvětlení." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218540.

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An objektive of this university graduation work is an essay about any possibilities for energy savings with operation optimalization of public lightings. Understandings and introduction operation problems of public lighting is devote in first part of this work. Here we can chapters as Importance of public lightings or Gulations and norms in ralation to public lightings. The bigist and special attention is concentrated to description to public lightings systems and it is basic components. Another main part of this work is demonstration of used systems that are leading to energy savings for public lightings. These problems are detailed and explained in chapter Regulation of public lighting systems. This graduation work is describing individual types of regulation with the systems that are used with these regulatios in systems of public lightings. The assignment of last part of graduation work was to make sample calculation of energy demand and calculatin of yearly consumption on exemplary temporary system of public lightings. For this occasion was extra special auxiliary application sytem set up inside the Microsoft Excel program where all individual calculations were done.

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Books on the topic "Lighting source"

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Lighting: A design source book. Stewart, Tabori & Chang, 1998.

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1949-, Hunter-Reid Robin, ed. Focus on lighting photos. Focal Press, 2011.

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Hurter, Bill. Existing light techniques for wedding and portrait photography. Amherst Media, 2008.

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Boucar, Diouf, and SpringerLink (Online service), eds. Solar Lighting. Springer-Verlag London Limited, 2011.

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Illumination, International Commission on. Method of measuring and specifying colour rendering properties of light sources. Commission internationale de l'éclairage, CIE Central Bureau, 1995.

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IESNA Light Sources Committee. IESNA guide to choosing light sources for general lighting. Illuminating Engineering Society of North America, 1998.

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Stoppees' Guide to Photography and Light. Elsevier Science, 2008.

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Smith, Jeff. Jeff Smith's guide to head and shoulders portrait photography. Amherst Media, 2009.

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Janet, Stoppee, ed. Stoppees' guide to photography and light: What digital photographers, illustrators, and creative professionals must know. Elsevier/Focal Press, 2009.

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R, Bean A., ed. Lighting engineering: Applied calculations. Architectural Press, 2001.

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Book chapters on the topic "Lighting source"

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Vinh, Quang Trinh, Tran Quoc Khanh, Hristo Ganev, and Max Wagner. "Measurement and Modeling of the LED Light Source." In LED Lighting. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527670147.ch4.

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Ikeuchi, Katsushi, Yasuyuki Matsushita, Ryusuke Sagawa, et al. "Light Source." In Active Lighting and Its Application for Computer Vision. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-56577-0_4.

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Vliet, J. A. J. M. "From Light Source to Lighting Unit." In Demand-Side Management and Electricity End-Use Efficiency. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1403-2_19.

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Harper, Caleb. "Open-Source Agriculture Initiative—Food for the Future?" In LED Lighting for Urban Agriculture. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1848-0_3.

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Kasanen, Pirkko, Arja Rytkonen, and Anneli Reisbacka. "Domestic Appliance Salesperson as Consumer’s Information Source." In Energy Efficiency in Household Appliances and Lighting. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56531-1_54.

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Chen, Chia-Ping, and Chu-Song Chen. "The 4-Source Photometric Stereo Under General Unknown Lighting." In Computer Vision – ECCV 2006. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11744078_6.

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Sun, Yi Ting, Yu Nan Pao, and T. H. Lin. "Side-Emitting LED Lens Design for Generating Planar Lighting Source." In Optics Design and Precision Manufacturing Technologies. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-458-8.152.

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Kok, Arjan J. F., and Frederik W. Jansen. "Source Selection for the Direct Lighting Computation in Global Illumination." In Photorealistic Rendering in Computer Graphics. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-57963-9_8.

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Nhut, Duong Tan, and Nguyen Ba Nam. "Light-Emitting Diodes (LEDs): An Artificial Lighting Source for Biological Studies." In IFMBE Proceedings. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12020-6_33.

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Yang, Lei, Shiwei Ma, and Bo Tian. "New Shape-from-Shading Method with Near-Scene Point Lighting Source Condition." In Advances in Intelligent and Soft Computing. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-25664-6_76.

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Conference papers on the topic "Lighting source"

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Durmus, Dorukalp, and Wendy Davis. "Optimising Light Source Spectrum For Object Reflectance." In Solid-State and Organic Lighting. OSA, 2014. http://dx.doi.org/10.1364/soled.2014.dth3d.3.

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Zaharov, A. A., and D. A. Ershov. "Investigation optimal location led lighting source." In 2016 International Conference on Actual Problems of Electron Devices Engineering (APEDE). IEEE, 2016. http://dx.doi.org/10.1109/apede.2016.7878997.

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Dubey, Atul Kumar, Mayank Gupta, Virendra Kumar, and Dalip Singh Mehta. "LED-based Extended White Light Source to Reduce the Heating Effect on YAG:Ce+3 Phosphor." In Solid-State Lighting. OSA, 2018. http://dx.doi.org/10.1364/ssl.2018.st5d.3.

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Chen, Pei-Yang, Jiann-Hwa Lue, Rou-Hui Lin, Ting-Jou Ding, and Shih-Hsin Ma. "LED Lighting Source Design for Fluorescent Microscope." In 2018 1st International Cognitive Cities Conference (IC3). IEEE, 2018. http://dx.doi.org/10.1109/ic3.2018.00-10.

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Zerhau-Dreihoefer, Harald, Uwe Haack, Thomas Weber, and Dierk Wendt. "Light source modeling for automotive lighting devices." In International Symposium on Optical Science and Technology, edited by C. Benjamin Wooley. SPIE, 2002. http://dx.doi.org/10.1117/12.479653.

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Bespalov, Nikolai N., Sergei S. Kapitonov, Mikhail V. Ilyin, Alexander V. Zorkin, and Alexander G. Volkov. "Controlled lighting system based on LED light source." In 2018 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus). IEEE, 2018. http://dx.doi.org/10.1109/eiconrus.2018.8317434.

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Manolescu, Anca, and Francisc Sisak. "LED source, a comparative analysis on lighting efficiency." In 2016 International Conference and Exposition on Electrical and Power Engineering (EPE). IEEE, 2016. http://dx.doi.org/10.1109/icepe.2016.7781395.

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Narendran, Nadarajah, Andrew Bierman, Mark J. Finney, and Ian K. Edwards. "Tunable light source for fiber optic lighting applications." In Optical Science, Engineering and Instrumentation '97, edited by Angelo V. Arecchi. SPIE, 1997. http://dx.doi.org/10.1117/12.284090.

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Zhang, Qian, Wei Feng, Liang Wan, Fei-Peng Tian, and Ping Tan. "Active Recurrence of Lighting Condition for Fine-Grained Change Detection." In Twenty-Seventh International Joint Conference on Artificial Intelligence {IJCAI-18}. International Joint Conferences on Artificial Intelligence Organization, 2018. http://dx.doi.org/10.24963/ijcai.2018/690.

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This paper addresses active lighting recurrence (ALR), a new problem that actively relocalizes a light source to physically reproduce the lighting condition for a same scene from single reference image. ALR is of great importance for fine-grained visual monitoring and change detection, because some phenomena or minute changes can only be clearly observed under particular lighting conditions. Hence, effective ALR should be able to online navigate a light source toward the target pose, which is challenging due to the complexity and diversity of real-world lighting \& imaging processes. We propose to use the simple parallel lighting as an analogy model and based on Lambertian law to compose an instant navigation ball for this purpose. We theoretically prove the feasibility of this ALR strategy for realistic near point light sources and its invariance to the ambiguity of normal \& lighting decomposition. Extensive quantitative experiments and challenging real-world tasks on fine-grained change monitoring of cultural heritages verify the effectiveness of our approach. We also validate its generality to non-Lambertian scenes.

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Hartmann, L. V., E. C. Santos, A. M. N. Lima, A. C. Oliveira, and M. B. R. Correa. "Photovoltaic lighting system based on Z-source/quasi-Z-source converter topology." In Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition - APEC 2011. IEEE, 2011. http://dx.doi.org/10.1109/apec.2011.5744629.

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Reports on the topic "Lighting source"

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Kramer, Robert. LED Street Lighting Implementation Research, Support, and Testing. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317274.

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This report describes the results of technical analysis, field tests, and laboratory tests that were performed for LED highway lighting options by the Energy Efficiency and Reliability Center (EERC) at Purdue University Northwest for the Indiana Department of Transportation (INDOT). This effort was conducted over the past 3 years to evaluate and test the technology and viability of using modern highway lighting technology to enhance energy efficiency, safety, security, and economic development of communities and roadways. During the testing period there was a continuous discussion between INDOT and EERC regarding the laboratory and field testing of INDOT approved luminaires submitted by vendors. There were multiple discussions with INDOT and vendors regarding the individual details and issues for the 29 luminaires that were tested. A comparison study was conducted by EERC of the various alternatives and comparison to currently installed luminaires. Data was collected for field tests of the luminaires by EERC and INDOT personnel for the luminaires. Field data was evaluated and compared to lighting models using vendor supplied ies data files. Multiple presentations were made at 3 separate Purdue Road Schools regarding the results and procedures of the testing program by EERC in conjunction with INDOT. A total of 22 final reports, considered confidential by INDOT, for individual vendor luminaires have been prepared as part of this effort. These reports were submitted sequentially to INDOT as testing was completed during the course of this effort. A total of 29 luminaires were tested. Some luminaire testing was terminated during testing due to design issues or vendor requests. All testing was summarized in the INDOT specification sheet attached to each report. Observations regarding the consistency of the supplied test luminaire with the requirements of Section 7.2 of the INDOT test procedure “Procedure for evaluation and approval list requirements for solid state ballasted luminaires ITM 957-17P” is provided in the Appendix to the report for each luminaire. Details regarding how these tests were performed and the respective associated evaluation of performance and reliability are provided in the report. This effort included: consideration of published and vendor information; appraisal of products consistent with national industry standards; review of physical design, thermal performance; laboratory testing of photopic performance, reliability, life cycle data and characteristics, and power characteristics; technical and probabilistic risk studies; and field testing and analysis of LED light sources including comparison to currently installed conventional light sources. Assistance in preparing INDOT standards for highway lighting was provided on multiple occasions.

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Schueler, Jim, and Ewen M. Thomson. Ground Conductivity Estimated from Wideband dE/dt Waveshapes of Distant Lightning Sources Near Ground. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada341013.

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CIE. CIE TN012:2021 Guidance on the Measurement of Temporal Light Modulation of Light Sources and Lighting Systems. International Commission on Illumination (CIE), 2021. http://dx.doi.org/10.25039/tn.012.2021.

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Berkowitz, Jacob F., Christine M. VanZomeren, Jaybus J. Price, and Anthony M. Priestas. Incorporating Color Change Propensity into Dredged Material Management to Increase Beneficial Use Opportunities. Engineer Research and Development Center (U.S.), 2020. http://dx.doi.org/10.21079/11681/39261.

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Dredged materials provide a number of beneficial use opportunities, including beach nourishment, habitat creation and restoration, and other activities. In situ sediment color is important for determining aesthetic and habitat suitability, for beach nourishment, and for other projects. However, dredged materials must meet locally established color compatibility requirements (for example, material cannot be too dark). Often, potential sediment sources are close to meeting specified color thresholds, and previous observations suggest that sediments lighten over time. In response to these observations, this study quantified sediment color change potential in a dredged m aterial management context. Results indicate that dredged material sediment color responded to changes in secondary color components, sediment mixing, and photolytic bleaching improving the sediment color for beneficial use application. Findings allowed for development of a conceptual color change capacity framework and supported development of tools for resource managers to incorporate color change dynamic into planning and operations activities.The following report provides a framework for determining the color change capacity of dredged materials using (1) a comprehensive laboratory approach and (2) a semiquantitative index based on source material and placement location conditions. These tools allow practitioners to incorporate dredged-material color change into resource management decisions, thus increasing beneficial use opportunities.

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Braun, Lindsay, Jesus Barajas, Bumsoo Lee, et al. Construction of Pedestrian Infrastructure along Transit Corridors. Illinois Center for Transportation, 2021. http://dx.doi.org/10.36501/0197-9191/21-004.

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The availability and quality of pedestrian infrastructure play key roles in enabling access to transit. Many transit operators face challenges in facilitating this access, however, because they lack land use authority and encounter other institutional and programmatic impediments to effecting changes in the pedestrian environment. This report identifies the barriers to pedestrian access to transit in suburban communities located in the Pace Suburban Bus service area in northeastern Illinois and suggests potential solutions to overcome these barriers. The research team led several activities to collect data, including: conducting an academic literature review; reviewing pedestrian plans, policies, and programs in the region; surveying and interviewing key stakeholders; reviewing pedestrian funding sources; surveying and conducting case studies of peer transit agencies; conducting physical audits of pedestrian infrastructure; and interviewing residents of six municipalities about their transit access experiences. Lack of adequate funding, difficulties planning across jurisdictional boundaries, and conflicts in transportation priorities are major impediments to building pedestrian infrastructure. While planners and decision-makers tend to value pedestrian planning, challenges such as funding constraints and the need to retrofit suburban infrastructure are key barriers to implementation. Peer transit agencies face similar barriers to Pace and use strategies such as plan and policy development, diverse funding opportunities, and collaborative partnerships with stakeholder agencies and advocacy groups to overcome these barriers. Transit riders generally reported positive experiences with pedestrian access to transit in their communities. Many locations had robust infrastructure, but common deficiencies included poor sidewalk connectivity, incomplete crossings, lack of lighting and transit shelters, and deficiencies in Americans with Disabilities Act (ADA) infrastructure. A suite of policy recommendations for Pace and other partners that focus on planning, policy, funding, interagency coordination, education and training, infrastructure prioritization, and transit amenities address the full range of physical and institutional barriers identified in the research.

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Electrodeless lighting RF power source development. Final report. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/676962.

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