Results 31 to 40 of about 9,256,063 (344)

Compressive image sensor architecture with on-chip measurement matrix generation [PDF]

open access: yes, 2017
A CMOS image sensor architecture that uses a cellular automaton for the pseudo-random compressive sampling matrix generation is presented. The image sensor employs in-pixel pulse-frequency modulation and column wise pulse counters to produce compressed ...
Carmona Galán, Ricardo   +2 more
core   +1 more source

Positive allosteric modulation as a potential therapeutic strategy in anti-NMDA receptor encephalitis [PDF]

open access: yes, 2018
N-methyl-d-aspartate receptors (NMDARs) are ionotropic glutamate receptors important for synaptic plasticity, memory, and neuropsychiatric health. NMDAR hypofunction contributes to multiple disorders, including anti-NMDAR encephalitis (NMDARE), an ...
Benz, Ann   +11 more
core   +2 more sources

Molecular strategies for modulating Wnt signaling

open access: yesFrontiers in Bioscience, 2017
The importance of the Wnt signaling cascade in the fields of developmental biology, regenerative medicine, cancer genetics, and neurobiology has fueled a wide search for potent pharmacological agents capable of controlling Wnt signaling. Numerous fields of study have lent assistance to this endeavor, yielding both natural and synthetic compounds that ...
Carl T, Gustafson   +3 more
openaire   +2 more sources

Implementation of a Novel Variable Structure Nearest Level Modulation on Cascaded H-Bridge Multilevel Inverter

open access: yesIEEE Access, 2021
The output voltage of a Multilevel Inverter (MLI) can be controlled using various low and high frequency modulation strategy. Apart from meeting the load voltage demand, the modulation strategy also tries to reduce the harmonics present in the output ...
Zeeshan Sarwer   +6 more
doaj   +1 more source

Frequency-modulated nuclear localization bursts coordinate gene regulation [PDF]

open access: yes, 2008
In yeast, the transcription factor Crz1 is dephosphorylated and translocates into the nucleus in response to extracellular calcium. Here we show, using time-lapse microscopy, that Crz1 exhibits short bursts of nuclear localization (typically lasting 2 ...
Cai, Long   +2 more
core   +2 more sources

A Cooperative Network Coding Strategy for the Interference Relay Channel. [PDF]

open access: yes, 2012
In this paper, we study an interference relay network with a satellite as relay. We propose a cooperative strategy based on physical layer network coding and superposition modulation decoding for uni-directional communications among users.
Boucheret, Marie-Laure   +3 more
core   +3 more sources

The Impact of Channel Feedback on Opportunistic Relay Selection for Hybrid-ARQ in Wireless Networks

open access: yes, 2008
This paper presents a decentralized relay selection protocol for a dense wireless network and describes channel feedback strategies that improve its performance.
Heath Jr., Robert W.   +2 more
core   +3 more sources

A Novel Voltage Balancing Control in Multilevel Inverters for Pure Active Power Applications

open access: yesIEEE Access
Multilevel inverters are increasingly finding new applications in renewable energy. However, they face technical challenges that affect their performance in different ways.
Mahdi Zolfaghar   +3 more
doaj   +1 more source

Quantum key distribution based on a Sagnac loop interferometer and polarization-insensitive phase modulators [PDF]

open access: yes, 2006
We present a design for a quantum key distribution(QKD) system in a Sagnac loop configuration, employing a novel phase modulation scheme based on frequency shift, and demonstrate stable BB84 QKD operation with high interference visibility and low quantum
Huang, Lei-Lei   +3 more
core   +2 more sources

An Improved Modulation Strategy for Single-phase Three-level Neutral-point-clamped Converter in Critical Conduction Mode

open access: yesJournal of Modern Power Systems and Clean Energy
—— Two-level totem-pole power factor correction (PFC) converters in critical conduction mode (CRM) suffer from the wide regulation range of switching frequency. Besides, in high-frequency applications, the number of switching times increas‐ es, resulting
Ning Li   +6 more
semanticscholar   +1 more source

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