Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Liisa Halonen"'
Publikováno v:
Clinical Ophthalmology, Vol 2008, Iss Issue 1, Pp 173-185 (2008)
Meri Viikari, Aleksanteri Ekrias, Marjukka Eloholma, Liisa HalonenLighting Laboratory, Helsinki University of Technology, FinlandAbstract: The spectral sensitivity of the eye at low light levels, ie, mesopic conditions, is determined by the rod and c
Externí odkaz:
https://doaj.org/article/e9308a3079b74591b074ed9f6eabbd2b
Publikováno v:
International Journal on Engineering Applications. 7(1):9-16
Photovoltaic electricity production data was gathered during a one year period in southern Finland (Espoo, 60.11°N, 24.49°E) from each principal compass point and using several tilt angles in the south facing solar panel. The results showed that th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60e7beea2033ee9a2e38f4711718bb12
https://doi.org/10.15866/irea.v7i1.17186
https://doi.org/10.15866/irea.v7i1.17186
Publikováno v:
Tunnelling and Underground Space Technology. 70:42-54
To improve the safety of traffic in road tunnels, the effects of adaptation on peripheral visual performance were studied by measuring subjects’ reaction times and missed target rates. The process of driving through an illuminated road tunnel was s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::299eaeabb0afb859845de718cc935702
https://doi.org/10.1016/j.tust.2017.07.008
https://doi.org/10.1016/j.tust.2017.07.008
Autor:
Vieno Piironen, Liisa Halonen, Katriina Mouhu, Anna-Maija Lampi, Timo Hytönen, Paula Elomaa, Marja Rantanen, Katri Joensuu, Paulo Pinho, Minnamari Edelmann, K. Kauste, Susanna Kariluoto
Publikováno v:
Lighting Research & Technology. 50:880-893
Year-round greenhouse production in northern latitudes depends on the use of artificial lighting. Light emitting diodes provide a promising means to save energy during cultivation as well as to modify the light spectrum to regulate the growth and qua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d790b3a847a369fff420b32ba1f72ada
https://doi.org/10.1177/1477153517701300
https://doi.org/10.1177/1477153517701300
Autor:
Rami-Samuli Rasanen, Iisakki Kosonen, Seppo Sierla, Liisa Halonen, Hannu Hyyppä, Eino Tetri, Hans Baumgartner, Matti Vaaja, Juho-Pekka Virtanen, Matti Kurkela, Leena Tähkämö, Sanaz Bozorg Chenani, Erkki Ikonen
Publikováno v:
LEUKOS. 13:223-241
This article discusses various aspects of outdoor lighting energy efficiency by means of new light sources and smart lighting systems. We will also discuss visibility, traffic flow, safety, and environmental and economic aspects. The use of an optimu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aeaf46a68c41555fc4dce9a868367a88
https://doi.org/10.1080/15502724.2017.1283233
https://doi.org/10.1080/15502724.2017.1283233
Publikováno v:
Lighting Research and Technology. 49(6):743-762
In mesopic photometry, adaptation luminance is needed to derive the mesopic luminances for the measurement field. The average luminance of the visual adaptation field is considered as the adaptation luminance. The visual adaptation field has yet to b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd579b1f7c48ad9081bbd0b940ee5057
http://juuli.fi/Record/0283410217
http://juuli.fi/Record/0283410217
Publikováno v:
Lighting Research & Technology. 49:866-881
Along with the high energy-efficiency potential, light-emitting diode (LED) lighting provides the possibility for spectrum control. Our study presents the original data on the influence of LED light spectrum quality on the growth and macro- and micro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bdad920db76bee44436e5be867135ee
https://doi.org/10.1177/1477153516642269
https://doi.org/10.1177/1477153516642269
Publikováno v:
INDOOR AND BUILT ENVIRONMENT. 27(3):308-316
The ‘hue-heat’ hypothesis states that an environment which has wavelengths predominantly toward the red end of the visual spectrum feels ‘warm’ and one with wavelengths mainly toward the blue end feels ‘cool’. In order to test the hypothe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a02efb47675078bf5e3db92ded8edeb9
https://doi.org/10.1177/1420326X16673214
https://doi.org/10.1177/1420326X16673214
Publikováno v:
Displays. 64:101964
Highway tunnel lighting environments include sidewall, pavement, ceiling, etc., their surface luminance were affected by the distribution of luminous flux of the lamps. While driving through a highway tunnel, the driver needs to complete a series of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::feec85f98626a7e0ceeba24618887657
https://doi.org/10.1016/j.displa.2020.101964
https://doi.org/10.1016/j.displa.2020.101964
Publikováno v:
Displays. 61:101931
Drivers’ visual performance is closely related to traffic safety in a real driving environment. In order to improve the traffic safety of road tunnel lighting, the effect of LED lighting on human visual performance was investigated using reaction t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55d6512d5e62f8ef2088d24aa1423514
https://doi.org/10.1016/j.displa.2019.101931
https://doi.org/10.1016/j.displa.2019.101931