Results 231 to 240 of about 1,526,554 (267)

Direct-Detection Optical OFDM

Optical Fiber Communication Conference, 2014
In this paper we review the prior works on DDO-OFDM systems, including the traditional DDO-OFDM that utilizes single band and single polarization, the multiband DDOOFDM superchannel, and the dual-polarization (PDM) DDO-OFDM.
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Directions in Incident Detection and Response

IEEE Security & Privacy Magazine, 2011
Richard Bejtlich leads a conversation on how incident detection and response (IDR) teams' focus on detecting and preventing attacks has moved from targeting OSs to unauthorized-access-application functionality and data. He discusses why this makes IDR so much more difficult and what these new targets mean for IDR. Department editors Gunnar Peterson and
Richard Bejtlich, John Steven, Gunnar Peterson   +2 more
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Direct Detection [T 0]

2021
Once we understood how dark matter can be produced in the early Universe, from the inflationary phase to the thermal one, passing through the reheating process, it is time to question the possibility to detect this dark component largely present in our galaxy.
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Direct Phase Detecting System

Applied Optics, 1972
A system for extracting the phase components of an optical traveling wave field has been constructed. This system consists of the Mach-Zehnder interferometer to capture the wave field as the hologram, a photoelectronic scanning system, and an analog computing circuit.
Y, Ichioka, M, Inuiya
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How to Detect Hayman Directions

Computational Methods and Function Theory, 2008
In order to answer the question in the title of this paper, the author introduces a class of \textit{Hayman exceptional functions}. He expects that it plays a similar role for the study of Hayman directions as Julia exceptional functions do for Julia directions, a characterization of meromorphic functions without any Hayman directions by means of this ...
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Directional filtering in edge detection

IEEE Transactions on Image Processing, 1998
Two-dimensional (2-D) edge detection can be performed by applying a suitably selected optimal edge half-filter in n directions. Computationally, such a two-dimensional n-directional filter can be represented by a pair of real masks, that is, by one complex-number matrix, regardless of the number of filtering directions, n.
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On the Quantum Theory of Direct Detection

1997
By using the theory of measurements continuous in time in quantum mechanics [1][8], a photon detection theory has been formulated [9]– [12]; see Refs. [10]– [12] and [8] for detailed references. A quantum source as an atom, an ion or a more complicated system, eventually placed inside an optical cavity, is stimulated by lasers or by a thermal bath. The
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On Directed Densest Subgraph Detection

2023
Kai Yao, Xin Yang, Lijun Chang
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On the “direct detection” of gravitational waves

Studies in History and Philosophy of Science
In this paper, I provide an account of direct (vs. indirect) detection in gravitational-wave astrophysics. In doing so, I highlight the epistemic considerations that lurk behind existing debates over the application of the term "direct". According to my analysis, there is an epistemically significant distinction between direct and indirect detections ...
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A Direct Method for RT-PCR Detection of SARS-CoV-2 in Clinical Samples

Healthcare (Switzerland), 2021
Esam Ibraheem Azhar, Sherif El-Kafrawy, Mai El-Daly   +2 more
exaly