Journal articles: 'Lighting'

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BORISOV, Ruslan K., Vasily V. ZAZHIGIN, and Maxim N. SMIRNOV. "Lightning Protection of Outdoor Lighting Networks." Elektrichestvo 9, no. 9 (2020): 28–33. http://dx.doi.org/10.24160/0013-5380-2020-9-28-33.

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Zhang, Xiu Bin, Ding Jun Wen, Ya Ming Sun, and Hong Gang Chen. "Lightning Overvoltage Analysis and Calculation of 330kV Overhead Transmission Line." Applied Mechanics and Materials 556-562 (May 2014): 1588–91. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.1588.

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Lighting is one of the important reasons of transmission line trip accident. For 330kV and above ultra high voltage transmission line, lighting flashover more frequently occur. To reduce tripping rate effectively and fundamentally, lightning over voltage level should be analyzed besides anti-pollution flashover. In this paper, a simplified equivalent circuit model of a 330kV overhead transmission lines is established. The lightning over voltage of the transmission is analyzed and calculated. Method to reduce the lightning overvoltage is discussed.

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Karaman, Mesut, and Mehmet Öcal. "Yaz Koşullarında Gece-Gündüz Yemlemesi ve Aydınlatmanın Etlik Piliçlerin Performansı Üzerine Etkileri." Turkish Journal of Agriculture - Food Science and Technology 6, no. 1 (February 4, 2018): 91. http://dx.doi.org/10.24925/turjaf.v6i1.91-96.1483.

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This study, aimed to determine the effects of different light regimen and day/night feeding on some performance criteria of 1104 broiler chickens during summer season. At the beginning of second week they were separated according to their sexes, and experiment had 2 × 6 replications. The 1st group, as control, received continuous lighting (daylight + lightening during night) and fed ad-libitum. The 2nd group was treated with continuous lighting too, but they had no access to feed between10:00 and 16:00 o’clock during the last three weeks. The 3rd group was also exposed to continuous lighting but had no access to feed between10:00 am and 16:00 pm. Fourth group received continuous lighting but had no access to feed between 24:00 pm and 06:00 am. Fifth group received continuous lighting, but they were not fed between 24:00 pm and 06:00 am during the last three weeks of experimental process. Sixth group had no access to feed box during 24:00 pm and 06:00 am, when they had not been exposed to light as well. There were no notable differences in live weight gain of male and female birds for all treatment groups, and similarly differences among feed consumption and feed conversion ratios were not remarkable statistically regardless of the sexes of chickens. There were significant differences in hot-cold carcass yields of the 3rd and 6th treatment groups for male birds and 6th treatment group for female birds. The differences for carcass weights of male birds were statistically significant and 3rd and 6th treatments groups were tend to be relatively higher than the other treatment groups. The differences among treatment groups for carcass weights of female birds, however, were not significant and similarly the effects of the treatments on the mortality rate was found to be in significant for same birds. Lightning (24h) and feeding ad - libitum affected the performance of the birds adversely, whilst restricted feeding and lightning process reduced the yield-loss the animals during the summer season.

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Kondro, Wayne. "Toronto lightens up on lighting up." Lancet 348, no. 9034 (October 1996): 1094. http://dx.doi.org/10.1016/s0140-6736(05)64434-0.

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Zeng, Xiang Zhi, Chao Fang Xu, and Gang Liu. "Study on the Application of Regional Risk Assessment of Lightning in Electrical Equipment Insulation." Advanced Materials Research 433-440 (January 2012): 1092–98. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.1092.

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With the rapid development of urbanization and the power system, the damages for the power system and electrical equipments which due to lighting strike are increasing. As the distributions of lighting activity are regional and random, the requirements for electrical and electronic equipment, voltage and insulation level are varied from lighting activity in different regions. This paper adopts the Lightning Location Data on the Pearl River Delta in the last 10 years, and uses the method of probability statistics to analyze the regional ground flash density, the probability of lightning strike accident, the damages of the lightning strikes accidents and other risk factors. It takes the topography, regional features, population density and other factors into account, and uses the weighted scores to establish the risk assessment model for the lightning strikes, programs to achieve the automatic calculation in allusion to the risk of lightning strikes in different types of buildings and insulation levels of the electrical and electronic equipment, and assess the risk of lightning strikes on the electrical and electronic equipment. And based on the risk assessment result, it incorporates the installation location, characteristics, importance and other factors to study the electronic equipment withstand voltage and insulation level.

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Shu, Hong Chun, Bin Zhang, Guang Bin Zhang, and Rui Min Duan. "Identification of Lightning Disturbance in UHVDC Transmission Lines Using Correlation Degree Based on Short Time Window Data." Advanced Materials Research 433-440 (January 2012): 3787–91. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.3787.

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In this paper, the simulation of ±800kV UHVDC transmission line in which fault lightning stroke and non-fault lightning stroke, line short circuit occur shows: because there is fault current lumped parameter access to earth during the fault lightning stroke or ground fault, the voltage waveform decrease suddenly and cross repeatedly the zero line in 5ms time window；There is no fault current accessing to earth during non-fault lighting stroke, the disturbance caused by lightning is too less than value of the pole voltage. The voltage waveform comes from the protect position change up and down around the direct voltage line and decays to the pole voltage line in the 5ms time window at last. In the case of the fault lightning or ground fault non-lightning, the correlation degree of transient component and pole voltage line in the time window is little. On the contrary, it is large during the non-fault lighting. Above this, the correlation degree is calculated using 5ms samples. This kind of algorithm can resist random noise effectively,calculating speed is very fast. Many PSCAD simulations show that the algorithm can identify lighting disturbance correctly.

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Goh, Hui Hwang, Sy yi Sim, Jamil Shaari, Noor Atiqah Azali, Chin Wan Ling, Qing Shi Chua, and Kai Chen Goh. "A Review of Lightning Protection System - Risk Assessment and Application." Indonesian Journal of Electrical Engineering and Computer Science 8, no. 1 (October 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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Cesti, Giancarlo, Marco Conedera, and Fosco Spinedi. "Considerazioni sugli incendi boschivi causati da fulmini | Some considerations on fires caused by lightning." Schweizerische Zeitschrift fur Forstwesen 156, no. 9 (September 1, 2005): 353–61. http://dx.doi.org/10.3188/szf.2005.0353.

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Lightning fires are not considered an important problem in Europe, especially in the Mediterranean region, where lightning is a minor cause of fire. On the southern slopes of the Alps,however, lighting fires are common enough during the summer months to cause relevant costs for their control. In this contribution, we discuss some general features concerning the lighting-generating thunderstorms, starting of the fire, fire behaviour and fire extinction, especially in the valley Aosta(Italy) and in the Canton Ticino (Switzerland).

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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 (February 3, 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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10

Kwon, Sook-Youn, Kyoung-Mi Im, and Jae-Hyun Lim. "LED Context Lighting System in Residential Areas." Scientific World Journal 2014 (2014): 1–16. http://dx.doi.org/10.1155/2014/851930.

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As issues of environment and energy draw keen interest around the globe due to such problems as global warming and the energy crisis, LED with high optical efficiency is brought to the fore as the next generation lighting. In addition, as the national income level gets higher and life expectancy is extended, interest in the enhancement of life quality is increasing. Accordingly, the trend of lightings is changing from mere adjustment of light intensity to system lighting in order to enhance the quality of one’s life as well as reduce energy consumption. Thus, this study aims to design LED context lighting system that automatically recognizes the location and acts of a user in residential areas and creates an appropriate lighting environment. The proposed system designed in this study includes three types of processing: first, the creation of a lighting environment index suitable for the user’s surroundings and lighting control scenarios and second, it measures and analyzes the optical characteristics that change depending on the dimming control of lighting and applies them to the index. Lastly, it adopts PIR, piezoelectric, and power sensor to grasp the location and acts of the user and create a lighting environment suitable for the current context.

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Haryani, Ariska Desy, Yatnanta Padma Devia, and Eva Arifi. "Evaluation of Natural Lighting System of Lecture Building." Rekayasa Sipil 15, no. 3 (October 30, 2021): 185–91. http://dx.doi.org/10.21776/ub.rekayasasipil.2021.015.03.4.

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Visual comfort is one of the most important things that building need. A building with a proper passive design obtains fulfill the users visual comfort through natural lighting Â on the other hand, a passive design that is less precise always requires energy to achieve the users visual comfort. Lecture building is one of the buildings that is effectively used 8 hours a day and 5 days on a week. The high operating hours cause visual comfort in the building becomes very important. The purpose of this study is to determine the performance of the building passive design in terms of lightingÂ to comprehend various visual problems in the building. The method used in this research is quantitative comparative by comparing the value of Â building lighting. Through the results of field measurements, building modeling simulations with Ecotect software, and SNI 03-6197-2000 parameter Â several problems were found in the building's natural lighting system such as inadequacy of lighting on the facade with a southwest orientation, enormous lighting on the facade with a northeast orientation, uneven lighting causing various visual discomforts.

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Nosirova, Zarifa, and Dildora Mirzayeva. "Using LED lamps in cultivation of mulberry nurseries." E3S Web of Conferences 371 (2023): 01034. http://dx.doi.org/10.1051/e3sconf/202337101034.

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The analysis of results carried out on revealing the efficiency of using in night LED lamps three, namely red, blue and white colors for increasing growth and development of mulberry nurseries in the greenhouse conditions has been presented. It has been shown that using LED strips improves growth and development of nurseries on in height, leaves quantity and width of nurseries. Moreover, the development degree of nurseries differs on the control variant weakly in case of red lighting one at the same time in the blue and white lighting variants it is essential. The maximal growth of nurseries on height in comparison of control variant in case of white lighting was to 25.0 %, and the minimal one corresponds to case of red lighting, 1.9 %. The average growths of nurseries for a season was 3.3, 13.2 and 15.5 % in cases of red, blue and white lightings, correspondingly. The relative growths of nurseries on the height for a season compared beginning of the experiences were 133.3, 140.0, 163.3 and 170.0 % in cases of control and also led, blue and white lighting variants, accordingly. The most quantity of leaves in case of white lighting variant was 44.4 % more than control one and the least quantity corresponds to the red lighting variant, 8.8 %. The average values of this quantity for a season were 5.7, 21.9 and 24.3 % for red, blue and white lighting variants, correspondingly.

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Sawada, Harumi, Osamu Myodo, Masao Karino, and Kenichi Ishii. "Lighting patterns for life scenes in SCENE LIGHTIN." JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 75, Appendix (1991): 158. http://dx.doi.org/10.2150/jieij1980.75.appendix_158.

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Ardiyanto, Deki Renjaka, Jenny Putri Hapsari, and Eka Nuryanto Budisusila. "Design of Monitoring Lighting Counter Based on Android Application (Case Study at Tower BTS INDOSAT OOREDOO Site Utara Jepara 14JPA010)." Journal of Applied Science and Technology 2, no. 01 (January 16, 2022): 7. http://dx.doi.org/10.30659/jast.2.01.7-15.

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The need for information through a monitoring system on BTS tower equipment is very necessary, including monitoring lightning strike protection. To find out whether there is a strike on the BTS, usually, technicians have to come to the BTS location to see the impact of the strike in the form of damage to the arrester, or other damage and even seek information from residents around the BTS location. The location of the BTS location is far from the head office, of course this is not effective.This research is the development of a counter lighting system designed to monitor and detect lightning strikes from a distance. By using Arduino Uno, ethernet shield, current sensor and android smart phone. The information displayed on the android smart phone is the location of the BTS tower, the time and magnitude of the strike current. The lighting protection monitoring tool based on android operation using the PZEM-004T module is a system designed and utilized to read the presence of lightning strikes which include the current flowing in the BTS tower grounding system.The test results show that the lighting protection monitoring tool using the PZEM-004T module can measure and display the current value and when a strike occurs, in real time and stored in the database. Based on the test results, it can be concluded that the results of the design of the lighting protection monitoring tool have a deviation (error) of 9,64% and a current of 12,5%.

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Yoshimatsu, Hideki. "Structural Lighting and Architectural Lighting." JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 87, no. 3 (2003): 174–77. http://dx.doi.org/10.2150/jieij1980.87.3_174.

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Rea, M. S. "Lighting research for lighting practice." Lighting Research & Technology 20, no. 3 (September 1988): 119–20. http://dx.doi.org/10.1177/096032718802000306.

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Ishioka, Hiromi. "Favorite Lighting, Least Favorite Lighting, Who Is This Lighting For?" JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 86, no. 6 (2002): 381–83. http://dx.doi.org/10.2150/jieij1980.86.6_381.

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Ding, Qing, Xiuying Liang, Haihong Chen, Meng Liu, and Jie Yang. "Study on Policy and Standard System of LED Lighting Industry in EU." E3S Web of Conferences 194 (2020): 02016. http://dx.doi.org/10.1051/e3sconf/202019402016.

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This paper introduces the policy measures, regulations and standard systems of the LED lighting industry in EU, and analyzes the role of the EU’s policy measures in promoting the level of its LED lightning technologies and accelerating the industry development, as well as the positive significance of the EU’s standards and regulations in standardizing and leading the promotion and application of LED lighting products, realization of economic and social benefits, amongst others. In this paper, it is suggested that China should further enlarge policy-based support for promotion and application of key LED lighting technologies and products, enrich and improve the standard system, strengthen the implementation of standards, and set up a benign feedback mechanism for evaluation of standards.

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Maya, Dista Yufiana Aris, Erny Ishartati, Fatimah Nursandi, Harun Rasyid, and Syarief Husein. "Production Of Mini Tuber Potato (Solanum tuberosum L.) Ppt4 Zebra With Aeroponic System Through The Addition Of Lighting Color Settings And Lighting Length." Journal of Tropical Crop Science and Technology 6, no. 1 (March 28, 2024): 12–23. http://dx.doi.org/10.22219/jtcst.v6i1.32888.

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Potatoes (Solanum tuberosum L.) are carbohydrate-rich crops. Low potato productivity in Indonesia stems from farmers' inadequate access to quality seed potatoes. One solution to this issue is enhancing quality seed potato production, achievable through aeroponic systems. Lighting, whether incandescent or LED, can optimize potato mini tuber propagation in aeroponic systems. Research on lighting's effects on potato growth remains incomplete. This study aims to investigate how lighting color and duration affect mini tuber production of Solanum tuberosum L. PPT4 Zebra using aeroponic systems. Conducted in Jurangkuali, Bumiaji sub-district, Batu, the study employed a split plot design. The main plot consisted of lighting colors (WC): light yellow (WK), white (WP), and purple (WU). Subplots were lighting duration (LP) at 3 hours (LP 3) and 5 hours (LP 5), each replicated four times. Each replication comprised 8 samples, with 18 potato plant cuttings per population. Variables included plant height, stem diameter, leaf count, chlorophyll level, root length, tuber count, tuber diameter, budding seed count, and tuber weight. Data were analyzed using F-tests followed by BNJ tests at a 5% significance level. Results indicated no interaction between lighting color and duration. Purple lighting yielded the highest tuber count and weight, while 3-hour lighting duration yielded superior plant height, stem diameter, leaf count, and root length.

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Huhn, Wolfgang, Stephan Berlitz, and Thomas Sommerer. "Lighting." ATZextra worldwide 12, no. 1 (September 2007): 206–9. http://dx.doi.org/10.1365/s40111-007-0039-5.

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JEWELL, James Earl. "Lighting:." Journal of Light & Visual Environment 15, no. 2 (1991): 21–25. http://dx.doi.org/10.2150/jlve.15.2_21.

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Mills, Alan. "Lighting." III-Vs Review 17, no. 4 (May 2004): 39–41. http://dx.doi.org/10.1016/s0961-1290(04)00466-1.

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Slusallek, P., M. Stamminger, W. Heidrich, J. C. Popp, and H. P. Seidel. "Composite lighting simulations with lighting networks." IEEE Computer Graphics and Applications 18, no. 2 (1998): 22–31. http://dx.doi.org/10.1109/38.656787.

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Djokic, Lidija, and Aleksandra Kostic. "Urban lighting: Monochromatic and dynamic lighting." Kultura, no. 134 (2012): 200–209. http://dx.doi.org/10.5937/kultura1234200d.

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Fontoynont, Marc. "LED lighting, ultra-low-power lighting schemes for new lighting applications." Comptes Rendus Physique 19, no. 3 (March 2018): 159–68. http://dx.doi.org/10.1016/j.crhy.2017.10.014.

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Oh, Ryun-Seok, Young-Hoon Bae, and Jun-Ho Choi. "Evaluation of the Maximum Cognitive Distance per Exit Sign Lighting Colour." Fire Science and Engineering 37, no. 1 (February 28, 2023): 70–75. http://dx.doi.org/10.7731/kifse.dccba0a5.

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Exit sign lightings shorten evacuation time by informing evacuees of the direction to a safe area . As the information included in the exit sign lighting is easily recognized by evacuees, the time required for route choice and probability of moving in the wrong direction are reduced. In this study, we examined a method to improve cognitive performance using the exit sign lighting color. The maximum cognitive distance was measured for seven colors (red, orange, yellow, green, blue, navy, and purple) in the visible region, from which the exit sign lighting color with the best cognitive performance was derived. The red, blue, navy, and purple have longer maximum cognitive distance than green, which is mainly used in Korea. However, there are no statistically significant differences.

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Bejleri, M., V. A. Rakov, M. A. Uman, K. J. Rambo, C. T. Mata, and M. I. Fernandez. "Triggered Lightning Testing of an Airport Runway Lighting System." IEEE Transactions on Electromagnetic Compatibility 46, no. 1 (February 2004): 96–101. http://dx.doi.org/10.1109/temc.2004.823617.

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Asalor, J. O., and I. W. Ujevwerume. "Assessment of availability of street light system: A study of Warri, Delta State, Nigeria." Nigerian Journal of Technology 39, no. 2 (July 16, 2020): 536–41. http://dx.doi.org/10.4314/njt.v39i2.24.

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The study computes the availability of street lighting system in Warri. This system under study consists of subsystems that are known as workstations. A generator and sets of street light make up a workstation. The power source and the street lighting were modeled into series and parallel combinations. Reliability Block Diagrams and Path Tracing Method were employed assuming independent failure of the components. The availability of the set of street lightings, workstations and hence the availability of the system were determined. Results of the study show that users in Cemetery road had the least availability of 62.19% for the period. The implication is that users travelling along this road experienced wide variation of light that could lead to accidents. Keywords: Availability, Street Lighting and Reliability block diagram

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Ebbensgaard, Casper Laing. "Standardised difference: Challenging uniform lighting through standards and regulation." Urban Studies 57, no. 9 (September 19, 2019): 1957–76. http://dx.doi.org/10.1177/0042098019866568.

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Artificial lighting has received increased attention from urban scholars and geographers in recent years. It is celebrated for its experimental aesthetics and experiential qualities and critiqued for its adverse effects on biological life and the environment. Yet scholars and practitioners unite in their disapproval of uniform and homogenous lighting that follows from standardised lighting technologies and design principles. Absent from debates in urban scholarship and geography, however, is any serious consideration of how lighting designers respond to such standardised measures and regulations. In this article, I address this lack of academic attention by exploring how designers overturn the restrictive challenges posed by the standards and regulations of the design and planning process. Drawing on interviews with designers involved in the lighting design of a mixed-use redevelopment project in Canning Town, East London, I demonstrate how the interpretation and translation of lighting standards and regulations resist the tendency to predetermine design aesthetics and functions. By drawing attention away from the technical specifications and numerical values that are prescribed in standards and regulations, and towards lighting’s experiential and performative effects, the article argues that lighting designers can play an important role in challenging how standards and regulations are measured, defined and maintained. Calling on urban scholars to play a more prominent role in foregrounding this process of translation, I suggest that standards and regulations can provide frameworks within which luminous differentiation and preservation of darkness can be achieved, playing a potentially crucial role in ensuring a socially and environmentally sustainable transition to energy efficient lighting.

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Xu, Nuo, Yongming Xu, Yifei Yan, Zixuan Guo, Baizhi Wang, and Xiang Zhou. "Evaluating Road Lighting Quality Using High-Resolution JL1-3B Nighttime Light Remote Sensing Data: A Case Study in Nanjing, China." Remote Sensing 14, no. 18 (September 9, 2022): 4497. http://dx.doi.org/10.3390/rs14184497.

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A good lighting environment for roads at night is essential for traffic safety. Accurate and timely knowledge of road lighting quality is meaningful for the planning and management of urban road lighting systems. Traditional field observations and mobile observations have limitations for road lightning quality evaluation at a large scale. This study explored the potential of 0.92 m resolution JL1-3B nighttime light remote sensing images to evaluate road lighting quality in Nanjing, China. Combined with synchronous field measurements and JL1-3B data, multiple regression and random forest regression with several independent variable combinations were developed and compared to determine the optimal model for surface illuminance estimation. Cross validation results showed that the random forest model with Hue, saturability, ln(Intensity), ln(Red), ln(Green) and ln(Blue) as the input independent variables had the best performance (R2 = 0.75 and RMSE = 9.79 lux). Then, this model was used to map the surface illuminance. The spatial scopes of roads were extracted from Google Earth images, and the illuminance within roads was derived to calculate the average, standard deviation and coefficient of variation to indicate the overall brightness level and brightness uniformity of the roads. This study provides a quantitative and effective reference for road lighting evaluation.

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Lee, Wonjun, Hyung-Jun Lim, and Mun Sang Kim. "Development for Multisensor and Virtual Simulator–Based Automatic Broadcast Shooting System." International Journal of Digital Multimedia Broadcasting 2022 (July 16, 2022): 1–13. http://dx.doi.org/10.1155/2022/2724804.

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To solve the limitations of complexity and repeatability of existing broadcast filming systems, a new broadcast filming system was developed. In particular, for Korean music broadcasts, the shooting sequence is stage and lighting installation, rehearsal, lighting effect production, and main shooting; however, this sequence is complex and involves multiple people. We developed an automatic shooting system that can produce the same effect as the sequence with a minimum number of people as the era of un-tact has emerged because of COVID-19. The developed system comprises a simulator. After developing a stage using the simulator, during rehearsal, dancers’ movements are acquired using UWB and two-dimensional (2D) LiDAR sensors. By inserting acquired movement data in the developed stage, a camera effect is produced using a virtual camera installed in the developed simulator. The camera effect comprises pan, tilt, and zoom, and a camera director creates lightning effects while evaluating the movements of virtual dancers on the virtual stage. In this study, four cameras were used, three of which were used for camera pan, tilt, and zoom control, and the fourth was used as a fixed camera for a full shot. Video shooting is performed according to the pan, tilt, and zoom values of the three cameras and switcher data. Only the video of dancers recorded during rehearsal and that produced by the lighting director via the existing broadcast filming process is overlapped in the developed simulator to assess lighting effects. The lighting director assesses the overlapping video and then corrects parts that require to be corrected or emphasized. The abovementioned method produced better lighting effects optimized for music and choreography compared to existing lighting effect production methods. Finally, the performance and lighting effects of the developed simulator and system were confirmed by shooting using K-pop using the pan, tilt, and zoom control plan, switcher sequence, and lighting effects of the selected camera.

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Wei, Hao, Jin Zhao, Jiangtao Hu, and Byoung Ryong Jeong. "Effect of Supplementary Light Intensity on Quality of Grafted Tomato Seedlings and Expression of Two Photosynthetic Genes and Proteins." Agronomy 9, no. 6 (June 25, 2019): 339. http://dx.doi.org/10.3390/agronomy9060339.

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Lower quality and longer production periods of grafted seedlings, especially grafted plug seedlings of fruit vegetables, may result from insufficient amounts of light, particularly in rainy seasons and winter. Supplemental artificial lighting may be a feasible solution to such problems. This study was conducted to evaluate light intensity’s influence on the quality of grafted tomato seedlings, ‘Super Sunload’ and ‘Super Dotaerang’ were grafted onto the ‘B-Blocking’ rootstock. To improve their quality, grafted seedlings were moved to a glasshouse and grown for 10 days. The glasshouse had a combination of natural lighting from the sun and supplemental lighting from LEDs (W1R2B2) for 16 h/day. Light intensity of natural lighting was 490 μmol·m−2·s−1 photosynthetic photon flux density (PPFD) and that of supplemental lighting was 50, 100, or 150 μmol·m−2·s−1 PPFD. The culture environment had 30/25 °C day/night temperatures, 70% ± 5% relative humidity (RH), and a natural photoperiod of 14 h as well. Compared with quality of seedlings in supplemental lighting of 50 μmol·m−2·s−1 PPFD, that of seedlings in supplement lighting of 100 or 150 μmol·m−2·s−1 PPFD improved significantly. With increasing light intensity, diameter, fresh weight, and dry weight, which were used to measure shoot growth, greatly improved. Leaf area, leaf thickness, and root biomass were also greater. However, for quality of seedlings, no significant differences were discovered between supplement lighting of 100 μmol·m−2·s−1 PPFD and supplement lighting of 150 μmol·m−2·s−1 PPFD. Expressions of PsaA and PsbA (two photosynthetic genes) as well as the corresponding proteins increased significantly in supplement lightning of 100 and 150 μmol·m−2·s−1 PPFD, especially in 100 μmol·m−2·s−1 PPFD. Overall, considering quality and expressions of two photosynthetic genes and proteins, supplemental light of 100 μmol·m−2·s−1 PPFD (W1R2B1) would be the best choice to cultivate grafted tomato seedlings.

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Ross, Philip R., and Niek Rutten. "Light Sketching for Ecology: A cooperative design tool for balancing human experience and ecological impact." IOP Conference Series: Earth and Environmental Science 1099, no. 1 (November 1, 2022): 012055. http://dx.doi.org/10.1088/1755-1315/1099/1/012055.

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Abstract The impact of artificial light at night on ecology is an urgent and continuous consideration in lighting design. People’s needs and wishes for light in urban areas often conflict with demands for minimising ecological impact. For example, in city parks people may desire light that offers a pleasant experience of nature and the feeling of safety, while the fauna may thrive best with no light at all. How to overcome this seemingly unresolvable conflict, especially in hybrid environments like city parks? This paper presents Light Sketching for Ecology, a cooperative lighting design tool to help balance lighting demands from the human experience side with demands for minimising ecological impact. Results from a pilot study show the potential of Light Sketching for Ecology to create a win-win situation in which park users are more positive about the park lighting while the lighting’s ecological impact is significantly lowered.

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Šístková, M., A. Peterka, and B. Peterka. "Light and noise conditions of buildings for breeding dairy cows." Research in Agricultural Engineering 56, No. 3 (August 26, 2010): 92–98. http://dx.doi.org/10.17221/43/2009-rae.

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Check measurement of the illuminance, the uniformity ratio of illuminance and noise level was made in the selected stable building to prove quality of lightning both for service workers and the cattle. The measurement discovered that the noise level, the day lighting and artificial lighting do not satisfy valid health standards and can have harmful effect upon human and cattle organism. In the monitored stable building the permissible hygienic limit of noise was exceeded only during distribution of feed and bedding and it only for the short time.

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Ma, Shi Dian, Hao Bin Jiang, and Mu Han. "Study on Calibration Test of Height Adjusting System for Automobile Headlight Based on Uniform Design Experiment." Applied Mechanics and Materials 325-326 (June 2013): 738–41. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.738.

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This paper describes the new Calibration test method of Height Adjusting System for Automobile High Lighting. Come up with the problem of working efficiency for Calibration test, study the parameters tuning method of Height Adjusting System for High Lighting based on uniform design experiment. Analyze experimental data by using direct analysis method and range analysis method, find the factor which affects the high lightings height most. Verify the result of orthogonal experiment on the test platform. The test shows that the new Calibration test method is reliable and efficient.

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Lal, Deen Mani, Sachin D. Ghude, Jagvir Singh, and Suresh Tiwari. "Relationship between Size of Cloud Ice and Lightning in the Tropics." Advances in Meteorology 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/471864.

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The association of lightning flashes with mean cloud ice size over continental and oceanic region in the tropical areas has been analyzed using the observations from various satellite platforms (MODIS, TRMM, and LIS) for the period 2000–2011. We found that frequency of lightning in general is higher over the continental region compared to oceanic region, whereas larger size of cloud ice is observed over the oceanic regions compared to the continental regions. Relationship between lighting and cloud ice size shows similar features over both continental and oceanic regions. For the first time, we show that total lighting increases with increase in the cloud ice size; attends maximum at certain cloud ice size and then decreases with increase in cloud ice size. Maximum lightning occurred for the mean cloud ice size of around 23–25 µm over the continental region and mean cloud ice size of around 24–28 µm over the oceanic region. Based on our observation we argue that the relation between lightning and mean cloud ice size follow the curve linear pattern, and not linear.

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Koksal, Nezihe, Meral Incesu, and Ahmet Teke. "Supplemental LED lighting increases pansy growth." Horticultura Brasileira 33, no. 4 (September 18, 2015): 428–33. http://dx.doi.org/10.1590/s0102-053620150000400004.

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ABSTRACT: Pansy (Viola cornuta) is a facultative long-day plant that flowers from October until March in Turkey. During the winter months, low light levels can limit plant growth and development. Light emitting diodes (LEDs) can provide supplemental lighting in greenhouses which produce same light intensity with less energy than conventional incandescent lighting. Light emitting diode technologies have enabled affordable and efficient light systems to be installed in greenhouses and plastic tunnels in the field. In this experiment we evaluated the effects of supplemental red-orange LED lightening on the growth and development of pansy cv. Blue Blotch grown in plastic tunnels. The energy, which LEDs are to consume, was provided through a solar panel system with the aim of drawing attention to the cleanliness of solar energy source. Five hours of supplement LED lighting was applied after dusk starting from November to February. Pansy growth and development parameters were compared with non-light supplied control plants. Supplemental LED lighting significantly increased plant biomass weight, flower number and leaves number at the rate of 52%, 72%, and 47%, respectively. Moreover, LED lighting increased plant growth rate (0.109 and 0.306 g of fresh weight), compared with the no light control. LED lighting, however, had no effect on length of stems, number of branches and the diameter of flowers. Thus, this study indicated that pansies are light limited during the winter months and supplemental LED lighting can significantly increase pansy growth and development.

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Enwin, Anthony Dornubari, Tamunoikuronbo Dawaye Ikiriko, and Okafor Chukwuemeka G. "Light as a Tool of Emphasis in the Interior of Residential Buildings." International Journal of Multidisciplinary Research and Growth Evaluation 5, no. 1 (2024): 142–47. http://dx.doi.org/10.54660/.ijmrge.2024.5.1.142-147.

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This paper examines the interaction between architecture and lighting, highlighting their cooperative connection in creating captivating experiences within interior spaces. The study is based on a qualitative research approach and explores three interconnected themes, which are ‘Light as a Tool of Emphasis, the Dynamic Emphasis of Daylight, and the Appeal of the Flexibility of Lighting in Emphasis’. When examining the various aspects of lighting in architecture, the initial theme is its significant influence on the way users perceive and behave. Examining both qualitative and quantitative elements, this theme explores the factors of visibility, colour rendering, and emotional reactions elicited by various lighting designs. This theme also emphasizes the use of modern lighting design in homes, with fixtures that fulfil both practical and visual purposes. In addition to its traditional relationship with energy efficiency, the second theme looks into the dynamic role of daylight in architectural spaces. With this theme, architects can evaluate the qualitative characteristics of daylight by utilizing a matrix consisting of 10 shades, which provides them with a conceptual framework. This theme also highlights the interaction between natural and artificial lighting, demonstrating how they collectively impact visibility, aesthetics, and energy efficiency. The third theme emphasizes the importance of the flexibility of lighting design, enabling it to adapt to various spatial roles. Lighting that is focused on human needs can be adjusted in intensity and colour temperature to promote flexibility in the use of space, enhance the well-being of inhabitants, and utilise for a range of aesthetic possibilities. Integration of smart lighting augments adaptability and intelligence in architectural lighting. Synthesizing these concepts, the discussion section of this paper highlights lighting's dynamic narrative role, transcending utilitarian approaches. It presents architects and designers as storytellers constructing experiences through sophisticated light utilization, resonating with the human condition. Acknowledging its qualitative nature, the study recommends further research avenues. It suggests quantitative investigations into the psychological and physiological implications of distinct lighting schemes and advocates refining typologies for diverse architectural situations. In conclusion, this paper improves lighting design's status as a dynamic, integrated architectural story component. Architects are taught to embrace their position as architects of engaging stories through the skilful instrumentation of light.

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Perko, Jurica, Srete Nikolovski, and Ljubomir Majdandžić. "Comparative Analysis of Power Quality Indices for Different Lighting Techniogies in Public Lightning." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 2 (April 1, 2018): 880. http://dx.doi.org/10.11591/ijece.v8i2.pp880-887.

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As with any other product, having electricity of a certain quality is very important for consumers. Its quality has become the key feature that can be disturbed by loads based on power electronic devices. Electricity producers are striving to provide reliable and quality electricity supply to consumers. Public lighting systems that are based on LED lighting technology can potentially positively or negatively affect the power quality because they contain power electronics components in LED drivers. Because of that, two 7-day measurements were conducted on the same public lighting branch but with different lighting technologies (high pressure sodium, known as HPS and LED technology). Results of the measurements were analysed and compared. By analysing the results, other problems were also identified by using LED lighting technology. These problems are addressed in the conclusion of the paper.

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Koedam, M. "LIGHTING IN THE NINETIES." JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 75, Appendix (1991): 1–4. http://dx.doi.org/10.2150/jieij1980.75.appendix_1.

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Olizarovich, M. V., and P. S. Remov. "APPLICATION OF DIOD SOURCE OF LIGHT IN SURGERY OF DISTROPHY DISEASES OF LUMBAR SPINE." Health and Ecology Issues, no. 3 (September 28, 2013): 73–77. http://dx.doi.org/10.51523/2708-6011.2013-10-3-14.

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The quality of lighting in surgery is the main factor of operative success. The prospects of the application of diod lightning devices in the surgery of lumbar spine dystrophic lesions were developed and analyzed.

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Nakajima, Yuki, and Takayoshi Fuchida. "Museum Lighting: Optimum Lighting and Color Environment." JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 98, no. 2 (2014): 68–73. http://dx.doi.org/10.2150/jieij.98.68.

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Miyata, Toshimoto. "Many-sided lighting and lighting fo rpersonality." JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 75, no. 11 (1991): 641–45. http://dx.doi.org/10.2150/jieij1980.75.11_641.

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Northfield, R. "Lighting up your life [Human-centric lighting]." Engineering & Technology 13, no. 9 (October 1, 2018): 36–39. http://dx.doi.org/10.1049/et.2018.0903.

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Cannon-Brookes, S. "Lighting: United Kingdom national lighting conference, 1994." Museum Management and Curatorship 13, no. 2 (June 1994): 213–15. http://dx.doi.org/10.1016/0964-7775(94)90083-3.

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McKee, Cameron, and Alan Hedge. "Ergonomic lighting considerations for the home office workplace." Work 71, no. 2 (February 18, 2022): 335–43. http://dx.doi.org/10.3233/wor-210704.

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BACKGROUND: The COVID-19 pandemic has resulted in a large increase in the use of the home office environment. Compared to traditional commercial offices, home offices typically have more variable lighting conditions that can affect the worker’s performance and well-being. OBJECTIVE: To review and discuss various lighting sources and their ergonomic impacts on the population of office employees now working from home. Specifically addressing the impacts of electronic light from screens, daylight, and task lighting’s impact on health and well-being in the frame of the COVID-19 pandemic. METHODS: Over 75 ergonomic and lighting literature publications covering various work environments were reviewed, with a focus on the health effects of screen light, daylight, and task light. RESULTS: Resulting from the literature review, design recommendations regarding the safety and health of home office lighting conditions are discussed. CONCLUSION: As COVID-19 continues to encourage remote working, individuals will be exposed to daylight and screen light in different ways compared to a traditional office environment. The impact of these different lighting conditions should be further studied to understand best design and well-being practices.

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Şimşek, Gökhan, and Rasim Giray. "Akıllı Aydınlatma Kontrol Sistemleriyle Gün Işığını Taşıyan Sistemlerin İncelenmesi." International Journal of Social Sciences 6, no. 26 (October 13, 2022): 354–70. http://dx.doi.org/10.52096/usbd.6.26.22.

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This studys aim to examines the performances level of method thats use smartion lighthing system control maximize the efective use of dayslight. Ase it’s know, in generals, dayslight is and indipensable elements of the ecologic cycles as a naturale dayslight sources. With the frame work of the studys, the relation ship betweene peoples building the concepts of dayslight their formalite function we are emhasized, the method the princip and usings smartes lighthing system control increa sing the efective use of light, to understand this developing system more clearly and to add it to the field of use, were examined. In this formal integrity, the benefits and requirements of these system functions are emphasized by approaching the subject in terms of the system that carries the daylight with the smart lighting control systems in question. Key Words: Day Light, Lighting Smart, System Carriers

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Tanigawa, Koichiro, and Hiroshi Nishimura. "Electronic Lighting System for HID Lamps and Lighting Unit for Electrodeless fluorescent Lamps." JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 75, Appendix (1991): 14–17. http://dx.doi.org/10.2150/jieij1980.75.appendix_14.

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AlKindi, Sheikha. "Case Study for Lighting Performance Enhancing for Multi - Purpose Sport Hall Lighting Analysis." International Journal of Science and Research (IJSR) 13, no. 7 (July 5, 2024): 22–29. http://dx.doi.org/10.21275/sr24624202852.

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Elehinafe, Francis Boluwaji, Feyisayo David Ibukun, Oluseye Ladipo Lasebikan, and Hassan Ademola Adisa. "A review on indoor air pollution from lightning sources in developing countries—The pollutants, the prevention and the latest technologies for control." Applied Chemical Engineering 6, no. 2 (September 27, 2023): 2156. http://dx.doi.org/10.24294/ace.v6i2.2156.

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Currently, developing nations around the world rely heavily on the use of biomass and fossil fuels for cooking, lighting, and warmth due to a lack of access to clean fuels and constant electricity supply. Unfortunately, the use of these materials has the side effect of emitting of harmful pollutants into the air. Constant exposure to some of these emissions has led to the death of millions of people around the world, with women and children disproportionately affected due to greater amounts of time spent indoors. The work focused on indoor air pollution from lightning sources in developing countries and the negative impacts of cases of ill-health and mortality. The techniques adopted for the research comprised extensive and intensive review of literature on lightning sources. Resources used encompassed internet materials, current reports and recent publications by researchers of note. The findings show that there are associated pollutants, the prevention and the latest technologies for control the pollutants. It was concluded that the dearth of research in lighting sources as sources of indoor air pollution is needed to be addressed by researchers. Also, policy implications to improve electricity deficits should be embarked upon by governments to discourage the use of fossils and biomass for lighting indoors.

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Journal articles on the topic 'Lighting'

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