Zobrazeno 1 - 10
of 162
pro vyhledávání: '"Alexander Herzog"'
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
Autor:
Alexander Herzog
Publikováno v:
Results in Control and Optimization, Vol 14, Iss , Pp 100351- (2024)
The objective of this publication is to reduce the sensitivity of iterative equation solvers on the initial value. To this end, at the hand of Newton’s method, we exemplify how to reformulate the initial problem by means of a set of generalized mom
Externí odkaz:
https://doaj.org/article/670dcfff19a542d0a30c6b24d99050e8
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
Autor:
Alexander Herzog-Stein
Publikováno v:
Wirtschaftsdienst, Vol 102, Iss 2, Pp 100-103 (2022)
Abstract The new German federal government wants to replace the unemployment benefit II (Arbeitslosengeld II) with a so-called citizen’s income (“Bürgergeld”). In doing so, it needs to make major changes. Measures outlined in the coalition agr
Externí odkaz:
https://doaj.org/article/10ce3e12042145df9f49d37ef5a5adfa
Publikováno v:
IEEE Access, Vol 10, Pp 83612-83619 (2022)
The unique radiative, photometric and colorimetric characteristic of a light-emitting diode is derived from its spectral power distribution. Modeling such characteristics with respect to the forward current, temperature or operating time has been sub
Externí odkaz:
https://doaj.org/article/92d298a94ce043a0a4c9f55d1152b04b
Autor:
Babak Zandi, Oliver Stefani, Alexander Herzog, Luc J. M. Schlangen, Quang Vinh Trinh, Tran Quoc Khanh
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
Abstract Smart integrative lighting systems aim to support human health and wellbeing by capitalising on the light-induced effects on circadian rhythms, sleep, and cognitive functions, while optimising the light’s visual aspects like colour fidelit
Externí odkaz:
https://doaj.org/article/cf519a546abd47e19c4517626fd9a135
Publikováno v:
Wirtschaftsdienst, Vol 100, Iss 4, Pp 285-290 (2020)
Abstract How important is the relaxation of contact restrictions for the recovery of the German economy and what conclusions can be drawn for the appropriate level of contact restrictions in the coming months? In considering these issues, an attempt
Externí odkaz:
https://doaj.org/article/7527a97285aa46928711353fe2a0100c
Publikováno v:
Research & Politics, Vol 8 (2021)
Topic models are widely used in natural language processing, allowing researchers to estimate the underlying themes in a collection of documents. Most topic models require the additional step of attaching meaningful labels to estimated topics, a proc
Externí odkaz:
https://doaj.org/article/f2e39773e3f34e3ebdc9ce51becf2131
Publikováno v:
Frontiers in Neuroscience, Vol 15 (2021)
The human pupil behavior has gained increased attention due to the discovery of the intrinsically photosensitive retinal ganglion cells and the afferent pupil control path’s role as a biomarker for cognitive processes. Diameter changes in the range
Externí odkaz:
https://doaj.org/article/d10e7fbd53ea494b813bd9117b51653b
Publikováno v:
Energies, Vol 14, Iss 3, p 527 (2021)
Modern indoor lighting faces the challenge of finding an appropriate balance between energy consumption, legal requirements, visual performance, and the circadian effectiveness of a spectrum. Multi-channel LED luminaires have the option of keeping im
Externí odkaz:
https://doaj.org/article/2500502934534f64a97b362bcfc402a0