Zobrazeno 1 - 10
of 1 650
pro vyhledávání: '"Webb, David J"'
Autor:
da Silva, Ricardo E., Osório, Jonas H., Webb, David J., Gérôme, Frédéric, Benabid, Fetah, Franco, Marcos A. R., Cordeiro, Cristiano M. B.
We demonstrate the acousto-optic modulation of a hybrid-lattice hollow core fiber (HL-HCF) for the first time. For many years, optical fibers with reduced diameters have been the main solution to increase the interaction of acoustic and optical waves
Externí odkaz:
http://arxiv.org/abs/2405.01779
Autor:
da Silva, Ricardo E., Osório, Jonas H., Rodrigues, Gabriel L., Webb, David J., Gérôme, Frédéric, Benabid, Fetah, Cordeiro, Cristiano M. B., Franco, Marcos A. R.
The modulation efficiency of a tubular-lattice hollow-core fiber (HCF) by means of flexural acoustic waves is investigated in detail for the first time. The main acousto-optic properties of the HCF are evaluated employing 2D and 3D models based on th
Externí odkaz:
http://arxiv.org/abs/2402.15825
All-fiber broadband spectral acousto-optic modulation of a tubular-lattice hollow-core optical fiber
Autor:
da Silva, Ricardo E., Osório, Jonas H., Rodrigues, Gabriel L., Webb, David J., Gérôme, Frédéric, Benabid, Fetah, Cordeiro, Cristiano M. B., Franco, Marcos A. R.
We demonstrate a broadband acousto-optic notch filter based on a tubular-lattice hollow-core fiber for the first time. The guided optical modes are modulated by acoustically induced dynamic long-period gratings along the fiber. The device is fabricat
Externí odkaz:
http://arxiv.org/abs/2311.07776
Autor:
Webb, David J., Paul, Cassandra A.
We add to a growing literature suggesting that demographic grade gaps should be attributed to biases embedded in the courses themselves. Changes in the structure of two different introductory physics classes were made while leaving the topics covered
Externí odkaz:
http://arxiv.org/abs/2302.03543
Autor:
Webb, David J.
We prove various results connected together by the common thread of computability theory. First, we investigate a new notion of algorithmic dimension, the inescapable dimension, which lies between the effective Hausdorff and packing dimensions. We al
Externí odkaz:
http://arxiv.org/abs/2209.05659
Autor:
Kjos-Hanssen, Bjørn, Webb, David J.
While it is not known whether each real that is Kolmogorov-Loveland random is Martin-L\"of random, i.e., whether $\mathrm{KLR}\subseteq\mathrm{MLR}$, Kjos-Hanssen and Webb (2021) showed that $\mathrm{MLR}$ is truth-table Medvedev reducible ($\le_{s,t
Externí odkaz:
http://arxiv.org/abs/2204.13297
Autor:
Paul, Cassandra A., Webb, David J.
In previous work we analyzed databases for 95 classes to show that the percent grade scale was correlated with a much higher student fail rate than the 4.0 grade scale. This paper builds on this work and investigates equity gaps occurring under both
Externí odkaz:
http://arxiv.org/abs/2203.02626
Autor:
Webb, David J.
This addendum shows that a demographic grade gap is best understood using a course deficit model rather than the more common student deficit model. Students from a concepts-first class took the same final exam as the three other classes that were off
Externí odkaz:
http://arxiv.org/abs/2109.09240
Autor:
da Silva, Ricardo E., Manuylovich, Egor, Sahoo, Namita, Franco, Marcos A.R., Bartelt, Hartmut, Webb, David J.
Publikováno v:
In Optical Fiber Technology October 2024 87
Autor:
Stevenson, Andrew C., Clemens, Tom, Pairo-Castineira, Erola, Webb, David J., Weller, Richard B., Dibben, Chris
Publikováno v:
In Health and Place September 2024 89