Zobrazeno 1 - 10
of 251
pro vyhledávání: '"Tran Quoc Khanh"'
Publikováno v:
Cogent Economics & Finance, Vol 12, Iss 1 (2024)
This study examines the impact of exchange rate changes on Vietnam’s export-import dynamics during a transitioning exchange rate regime. Utilizing the Autoregressive Distributed Lag (ARDL) model, our findings indicate that global income and import
Externí odkaz:
https://doaj.org/article/52b64deae6c94c42a34a128ca471b071
Publikováno v:
IEEE Access, Vol 12, Pp 42295-42315 (2024)
This study explores a novel approach to monitor the spectral emission of LEDs by estimating the spectral power distribution from the spectral sensor responses during an accelerated aging experiment. Two methods for reconstructing the actual LED spect
Externí odkaz:
https://doaj.org/article/a9df42e0f603492bb169be4bf5c79a24
Publikováno v:
Applied Sciences, Vol 14, Iss 21, p 10081 (2024)
This study presents a significant advancement in LED interior lighting through the development and application of Asymmetric Lens–Total Internal Reflection (AL–TIR) optics, with a focus on enhancing lighting uniformity and indoor comfort by simul
Externí odkaz:
https://doaj.org/article/2e84e11af2604612a29e591efb590441
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract In 1924, the CIE published and standardized the photopic luminous efficiency function. Based on the standardized curve, luminous flux in lumens, luminance in cd/m $$^2$$ 2 , and illuminance in lux are determined by an integral of the curve a
Externí odkaz:
https://doaj.org/article/f11e38647a844b5b8bdd2841d7fcc569
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract From the beginning of the $$21\textrm{st}$$ 21 st century until today, the demand for lighting systems includes not only visual parameters (brightness, contrast perception, color quality), but also non-visual parameters. It is necessary to d
Externí odkaz:
https://doaj.org/article/cbd2f5231b554f8ab73dd0e0c43d4217
Publikováno v:
Applied Sciences, Vol 14, Iss 15, p 6654 (2024)
In the context of a global shift towards renewable energies and climate change mitigation, the market for electric vehicles has experienced a remarkable upswing, with battery electric vehicles (BEVs) leading this transformative wave. The appeal of BE
Externí odkaz:
https://doaj.org/article/e77de4fd9a7f4a288823fa89019665b2
Publikováno v:
Frontiers in Human Neuroscience, Vol 17 (2023)
Within this third part of our mini-series, searching for the best and worst automotive in-vehicle lighting settings, we aim to extend our previous finding about white light illumination preferences by adding local cortical area activity as one key in
Externí odkaz:
https://doaj.org/article/1b89eab17e994f8aa7883ad4f9a7159c
Autor:
Alexander Herzog, Simon Benkner, Babak Zandi, Matteo Buffolo, Willem D. Van Driel, Matteo Meneghini, Tran Quoc Khanh
Publikováno v:
IEEE Access, Vol 11, Pp 19928-19940 (2023)
We report on the degradation mechanisms and dynamics of silicone encapsulated ultraviolet A (UV-A) high-power light-emitting diodes (LEDs), with a peak wavelength of ${\mathrm {365~ \text {n} \text {m} }}$ . The stress tests were carried out for a pe
Externí odkaz:
https://doaj.org/article/ab768cbf2079407582a02b8a143e721b
Publikováno v:
Frontiers in Built Environment, Vol 9 (2023)
This paper explores human observer preferences for various sky-like interior lighting scenarios realized by a combination of a blue-enriched indirect uplight component with a correlated color temperature (CCT) of 6,500 K up to 30,000 K and a 4,000 K
Externí odkaz:
https://doaj.org/article/8383a35fce63410b802a4082ae1fccf4
Publikováno v:
Applied Sciences, Vol 14, Iss 2, p 872 (2024)
Successful communication between highly automated vehicles and vulnerable road users will be crucial in the future. In addition to the technical requirements of the communication system, the projected content is also essential to ensure successful co
Externí odkaz:
https://doaj.org/article/f325416cf9354a0d88ea4b2a841ac7cf