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Wyszukujesz frazę "illumination" wg kryterium: Temat


Tytuł:
Headlamp replacements’ comparison method
Autorzy:
Targosiński, T.
Powiązania:
https://bibliotekanauki.pl/articles/243566.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
headlighting
road illumination
performance comparison
Opis:
There are many replacements of headlamps on the market. Offered replacements parts should be “identical” as original and type approved. In fact it means that should have similar to original outside appearance and mounting fixtures and external size allowing for replace original one. From legal point of view to be placed in vehicle replacement headlamp should be type approved. Most important aftermarket criterion is low price. They are often offered for half or even less of original components price. From the other side the replacements can have less performance than original. When final customer want to make comparison between original and aftermarket headlamp it is a problem because there is no standard procedure or information allowing to compare performance. Similar problem have components wholesalers or end sellers. It is also important for traffic safety because many of contemporary headlamps meet some type approval requirements with significant surplus. To try solve this problem was developed method on the base measurements done using “Headlights’ analyser”. This device allow for measurements of illumination distribution of beam pattern. Appropriate analysis of recalculated illuminance can give important information allowing for comparison beam patterns of different headlamps, especially replacement. This method is based on as much as possible identical aiming of each headlamp using analytical finding of cut-off line than comparing important characteristics of road illumination and glare.
Źródło:
Journal of KONES; 2013, 20, 4; 451-456
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The visualization of effects in the shops lighting
Autorzy:
Górczewska, M.
Szydłowska, K.
Powiązania:
https://bibliotekanauki.pl/articles/97621.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
illumination design and planning
illumination of commercial objects or facilities interiors
calculation
computer visualization
Opis:
In many interiors the applied illumination performs not only the usable but also the decorative function, for the purpose of building the atmosphere and climate, and for emphasizing or accentuating with use of the light the architectonic elements and details, as well as for creating in the interior space the specific visual guide along the exhibition. Undoubtedly to this category belong interiors of the commercial facilities. The light performs in these interiors various and multiple functions, resulting from the necessity to provide the appropriate and suitable working conditions for the personnel and the need to present to customers the offered goods and services. The light function is also moulded and framed by the development of the modern contemporary illumination techniques. In the search for and in creating the appropriate suitable illumination solutions, there is very helpful the computer aided design and planning further completed with the visualizations.
Źródło:
Computer Applications in Electrical Engineering; 2016, 14; 531-540
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aesthetics of buried steel structures present and future
Autorzy:
Gbiorczyk, E.
Tomala, P.
Powiązania:
https://bibliotekanauki.pl/articles/383431.pdf
Data publikacji:
2017
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
aesthetics
illumination
corrugated plate structures
Opis:
This paper describes aesthetic aspects of the construction of corrugated steel plate structures. Aesthetically made objects from Europe are presented. Some of them were built in the old town areas, in parks, and under roads. Particular attention is paid to the future, how to change a simple design into a work of art using modem technology of illumination and architectural knowledge.
Źródło:
Archiwum Instytutu Inżynierii Lądowej; 2017, 23; 103-115
1897-4007
Pojawia się w:
Archiwum Instytutu Inżynierii Lądowej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure equation as novel strategy for optimum reflector design
Autorzy:
Ou, Chung-Jen
Powiązania:
https://bibliotekanauki.pl/articles/174423.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
illumination design
light-emitting diodes
structure equation
Opis:
The optimal use of energy resources is the central dogma for green technology and bio-optics. Reflectors provide a simple and fundamental structure for energy transport from a light emitting diode (LED) chip, and an appropriately designed reflector can reduce the fabrication cost of secondary optics for the LED. This paper demonstrates the role of three proposed reflector geometric factors in the two performance metrics – uniformity and collected energy (power), for designing LED reflectors. Through canonical factor analysis, a linear structure equation for LED reflector is suggested, and the methodology for designing the optimal shape is discussed. In addition, a generalized factor and a synthesis response are proposed for a more comprehensive investigation of optical performance. Results indicate a key parameter for balancing the optical performance, and the effects of various parameters and the trade-offs are revealed.
Źródło:
Optica Applicata; 2020, 50, 1; 95-110
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Illuminance under canopy in different types of forest in the northern taiga
Autorzy:
Feklistov, Pavel
Sobolev, Alexandr
Barzut, Oksana
Neverov, Nikolay
Powiązania:
https://bibliotekanauki.pl/articles/2041229.pdf
Data publikacji:
2021
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
illumination
forest type
spruce forests
pine forests
Opis:
The illumination under the canopy in different types of pine and spruce forests is considered. The research was carried out in different points of the Northern taiga of the Arkhangelsk region. Illumination was measured using a luxmeter in different directions: at the level of the moss-lichen layer, at the level of the grass-shrub layer and at a height of 1.3 m; at different distances from the tree trunk; at different distances from the edge of the forest. Illumination in pine forests at the level of the moss-lichen layer is 2.3 times higher than in spruce forests. Under the canopy of spruce forests, it is 1–3%, and in the pine forests, 3–9% of the illumination in the open. Illumination from tree trunks to the edge increases in pine and spruce forests equally. The lowest illumination is observed at the level of the moss-lichen layer, then it increases to the grass-shrub layer, and then practically does not change. However, the difference between pine and spruce forests is consistently high 47%. The decrease in illumination in the tree stand as it moves away from the edge in blueberry pine forests is observed up to a distance of 10 m from the edge, and in blueberry spruce forests up to 6 m.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 2; 112-115
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adaptive driving beam - new concept of vehicle front - lighting
Autorzy:
Targosiński, T.
Powiązania:
https://bibliotekanauki.pl/articles/949495.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
road transport
road illumination
headlamps
traffic safety
Opis:
Vehicle front-lighting is essential for road traffic sofety during night-time. It is a subject of continuous changes following the progress in technology. After the introduction of gas-discharge (xenon) light sources in 90-ties of the last century, in the recent years there were adaptive front-lighting systems (AFS) allowed to be used. This kind of front-lighting with significant complexity of functions and control, relatively limited lighting improvement and high costs, does not spread as quickly as it was predicted. For these reasons, the last two years saw automatic and adaptive driving beam offered, with electronic control based on the video camera image processing. It is done referring to the present in force, static technical requirements. But the automatic control o f these lights as well as reactions of other roads users could have wide spread implications for the night-driving comfort and safety. On one hand it should create much better road illumination, as it leads in many cases to road illumination closer to the standard driving beam, when at present the passing beam would be used. On the other hand, there is a significant risk of glaring other road users as a result of their improper recognition or erroneous activation/deactivation of these lights. It could be a result of imperfections in sensors, algorithm and devices controlling light beam changes. This could lead to lack of light reaction and glaring of improperly indentifled objects e.g. bicycles, pedestrians and to illumination deterioration in response to retro-reflectors (road signs). This paper describes most important issues concerning advantages and risks of introducing this kind of lights to the market and ways of defining requirements.
Źródło:
Journal of KONES; 2010, 17, 3; 453-460
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of contemporary illuminants characteristics. The led lamps example
Autorzy:
Goshko, M.
Powiązania:
https://bibliotekanauki.pl/articles/410988.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
illuminants
illumination
LED lamp
luminous efficacy
power coefficient
Opis:
The problems of investigation of contemporary illuminants characteristics are considered. Particularly the LED lamps of the following trade marks were tested: «Maxus», «Electrum», «Lemaso». Photometric and electrotechnical parameters, stated by the producers, were tested. The investigation revealed that the stated illuminants’ power did not correspond to the actual experimental data, in some cases the 8% exceeding was registered (Lemaso). On the other hand, the actual power of “Maxus” and “Electrum” LED lamps was lower than stated, -22,5 % and -2,35 % accordingly. The low power coefficient is the major drawback of LED lamps in Ukrainian market. Its actual value ranges are 0,4–0,65, whereas its minimal value for a LED lamp of 5-25 Watt power is considered to be not less than 0,8.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2016, 5, 3; 205-209
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of contemporary illuminants characteristics the led lamps example
Autorzy:
Goshko, M.
Powiązania:
https://bibliotekanauki.pl/articles/411091.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
illuminants
illumination
LED lamp
luminous efficacy
power coefficient
Opis:
The problems of investigation of contemporary illuminants characteristics are considered. Particularly the LED lamps of the following trade marks were tested: «Maxus», «Electrum», «Lemaso». Photometric and electrotechnical parameters, stated by the producers, were tested. The investigation revealed that the stated illuminants’ power did not correspond to the actual experimental data, in some cases the 8% exceeding was registered (Lemaso). On the other hand, the actual power of “Maxus” and “Electrum” LED lamps was lower than stated, -22,5 % and -2,35 % accordingly. The low power coefficient is the major drawback of LED lamps in Ukrainian market. Its actual value ranges are 0,4–0,65, whereas its minimal value for a LED lamp of 5-25 Watt power is considered to be not less than 0,8.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2015, 4, 4; 65-70
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lights during daytime in Poland
Autorzy:
Targosiński, T.
Powiązania:
https://bibliotekanauki.pl/articles/244025.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
traffic safety
illumination
law
daytime running lights
Opis:
From 1992 in Poland was obligation to use passing beam headlights in automotive traffic during daytime in autumn and winter. From April 2007 was introduced extension of this obligation to spring and summer. This obligation caused controversies and discussions. In some, mostly European countries this obligation is present during part of year or during full year on all or selected roads. Known research shows that profits of this obligation understanding as decreased number of killed and injured people exceed costs understanding as additional fuel consumption and light sources replaced. This law in Poland is used till now some month more over one year. The results and differences can be observed only for few months of2007 in relation to adequate few months in 2006. It is to short period of time to reach final conclusions. Because in 2007 the total number of accidents increases comparing 2006 there is a pressure of part of mass media and public opinion to withdraw this law. Preliminary detailed analysis of accidents connected with using lights during daytime shows rather decreased number of daytime light-dependent accidents when is observed increased number of night accidents. It means that common feeling regarding using lights in daytime and nigh-time can be far from objective research results. The base is differences in perceptions between people and mistakes of subjective assessment. In this paper is presented preliminary analysis of problems and results of using lights during daytime in Poland in spring/summer period.
Źródło:
Journal of KONES; 2008, 15, 2; 501-507
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Disinfection Properties of Conventional White LED Illumination and Their Potential Increase by Violet LEDs for Applications in Medical and Domestic Environments
Autorzy:
Buehler, Jule
Sommerfeld, Florian
Meurle, Tobias
Hoenes, Katharina
Hessling, Martin
Powiązania:
https://bibliotekanauki.pl/articles/2024030.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
antimicrobial
visible light
illumination
white
violet
LEDs
staphylococci
Opis:
The antimicrobial impact of visible violet and blue light has been known for more than a century but hardly been applied for purposeful pathogen reduction or prevention. The disinfecting properties of wide-spread warm-white and cool-white light emitting diodes (LEDs) are investigated by irradiation of staphylococci with different LEDs and varying doses. Additionally, the combination of a white and a violet LED illumination is examined. Both white LEDs exhibit an antimicrobial effect, which seems to be dominated by the blue parts of the LED emissions. Unfortunately, the antimicrobial effect is weak in realistic illumination applications. Additional violet LEDs can significantly enhance this impact without a large change in human color perception. This allows reasonable applications in certain medical and domestic environments without endangering humans.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 2; 169-175
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Small lighting luminaires for illumination applications
Autorzy:
Różowicz, Tadeusz
Wachta, Henryk
Różowicz, Sebastian
Powiązania:
https://bibliotekanauki.pl/articles/2172806.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computer visualization
illumination
LED light sources
luminance distribution
Opis:
The application of solid-state light sources in luminaires creates a new quality in illumination design works. In a confrontation with a commonly used but relatively unattractive flood method, the use of small-size luminaires allows one to present an illuminated architectural object in a more attractive way in the evening and at night. In this case, it is possible to apply the principles of illumination described in the literature, especially the principle of height amplification and the principle of depth amplification. The conceptual work of illumination with the use of a large number of small-size luminaires does not require the use of supporting graphical tools, but the specification of actual lighting equipment using only polygonal samples in this case is not possible. The paper presents selected issues of the key stages of the completed work. Using specialized computer software, a geometric model of the architectural object has been developed, facade materials have been parameterized, models of small-size illuminating equipment have been selected and, finally, calculations of luminance distribution on illuminated surfaces have been carried out. As a result of computer work, luminance distributions and photorealistic visualizations of illuminations from defined main directions of observation were obtained. The Lubomirski Palace in Przemysl is an example of the architectural object indicated for detailed works.
Źródło:
Archives of Electrical Engineering; 2022, 71, 4; 1035--1050
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Social Trend as One of Trends in City Lighting Development
Nurt społeczny jako jeden z trendów rozwoju oświetlenia miast
Autorzy:
Zienowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/1191221.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Przyrodniczy we Wrocławiu
Tematy:
iluminacja
oświetlenie publiczne
miasto
illumination
public lighting
town
Opis:
Aktualnie w dziedzinie iluminacji dokonuje się retrospekcja pojęcia genius loci. Główną myślą tej postawy działań jest szacunek do charakteru zastanego miejsca, jego tożsamości oraz ludzi, którzy w nim żyją. Oświetlenie urbanistyczne zaczyna rozwijać się w nowym kierunku – ukazuje i akcentuje aspekt społeczny. Dowodem na to są praktyki i eksperymenty świetlne podjęte przez niektóre miasta na świecie. Działania te udowadniają, że światło daje możliwość przetwarzania fragmentów krajobrazu w układy przestrzenne, które w rezultacie ujawnią swoją wyjątkowość i osobliwość. Dzięki temu wywierają dodatkowy wpływ na ludzi, otwierają ich, zmieniają i integrują, a przestrzeń, w której żyją, czynią niebanalną.
Źródło:
Architektura Krajobrazu; 2016, 2; 20-29
1641-5159
Pojawia się w:
Architektura Krajobrazu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Illumination of historical architectonic facilities and buildings using as an example the St. Joseph Church in Poznań
Autorzy:
Górczewska, M.
Mroczkowska, S.
Powiązania:
https://bibliotekanauki.pl/articles/97230.pdf
Data publikacji:
2015
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
outdoor lighting
illumination
lamps and luminaires selection
computer visualization
Opis:
In the article, using as an example the St. Joseph Church in Poznań, there has been described selected problems connected with the illumination of historical architectonic facilities and building. The choice of the selected illumination method is made using the designer imagination and conservator’s enquiry requirements. Technical conditions, related with the building location on the area equipped with utilities, may have significant influence on choosing the final solution for the lighting. In such situation computer visualizations become the tool facilitating determining the final illumination method. It is possible to select the appropriate illumination equipment taking into consideration location of luminaires which is directly depending on technical conditions.
Źródło:
Computer Applications in Electrical Engineering; 2015, 13; 394-403
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Illumination of the contemporary architectural facilities and buildings
Autorzy:
Górczewska, M.
Mroczkowska, S.
Powiązania:
https://bibliotekanauki.pl/articles/97301.pdf
Data publikacji:
2014
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
outdoor lighting
illumination
lamps and luminaires selection
computer visualization
Opis:
In the article, using as an example the Collegium Novum building in Poznań, there has been described selected problems connected with the illumination of modern architectonic facilities and building. In many cases, the author or designer of the building project has significant influence on selecting the final solution for the faęade illumination. There has been indicated the significant role of the computer visualization of the artistic effects. The visualization shows possible to obtain effects, dependently on applied technical illumination solutions. The effects depend on selected illumination method, selected illumination equipment as well as on the luminaires assembling methods. The comparison of various visualization versions facilitates taking the final decision for choosing the execution.
Źródło:
Computer Applications in Electrical Engineering; 2014, 12; 531-540
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Image acquisition system based on synchronized high-resolution gigabit ethernet cameras
Autorzy:
Włodarczyk, M.
Kacperski, D.
Płuciennik, T.
Grabowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/305720.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
image acquisition
cameras synchronized with illumination
biometrics
face recognition
Opis:
Over the past few years, a huge increase in the number of various computer vision applications can be observed. These are widely used in such areas as video surveillance, medical diagnostics, biometrics recognition, and the automotive and military industries. Most of these solutions take advantage of high-resolution cameras in order to obtain high-quality images. Surprisingly, little attention is paid in the literature to the practical implementation of off- the-shelf image acquisition systems. Most of the available solutions are composed of custom-developed electronic devices that use specialized multi-core DSPs and/or FPGA technology. Therefore, a novel realization of a scalable and comprehensive image acquisition system based on synchronized high-resolution Gigabit Ethernet cameras is presented in this paper. The proposed solution allows for the connection of multiple cameras along with any number of external illumination modules. The selected devices can be synchronized with each other in user-defined configurations; hence, a designed solution can be easily integrated in both simple and complex applications. The authors describe the design and implementation processes of the proposed platform in detail. The performance issues that can occur in such systems are presented and discussed. The obtained results are encouraging and useful for the development of similar solutions.
Źródło:
Computer Science; 2017, 18 (2); 179-194
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł

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