Results 41 to 50 of about 5,107,338 (277)

Cooperative Spectrum Sensing in Cognitive Radio Networks: A Survey on Machine Learning-based Methods

open access: yesJournal of Telecommunications and Information Technology, 2020
The continuous growth of demand experienced by wireless networks creates a spectrum availability challenge. Cognitive radio (CR) is a promising solution capable of overcoming spectrum scarcity.
Sundous Khamayseh, Alaa Halawani
doaj   +1 more source

Spectrum sharing models in cognitive radio networks [PDF]

open access: yes, 2011
Spectrum scarcity demands thinking new ways to manage the distribution of radio frequency bands so that its use is more effective. The emerging technology that can enable this paradigm shift is the cognitive radio.
Rifà Pous, Helena, Rifà Coma, Josep
core  

Circulating microRNA signatures of cachexia and cancer in Canis familiaris as a comparative oncology model for human disease

open access: yesMolecular Oncology, EarlyView.
Circulating microRNAs as biomarkers of cachexia and sex‐specific cancer in senior dogs. In 25 client‐owned dogs, four circulating miRNAs (miR‐15a, miR‐15b, miR‐16, miR‐140) were downregulated in cachexia, with miR‐16 the strongest individual biomarker (AUC = 0.899).
Soon‐Seok Park   +6 more
wiley   +1 more source

Energy- and Cognitive-Radio-Aware Routing in Cognitive Radio Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2012
Cognitive radio sensor networks (CRSNs) are the next generation wireless sensor networks (WSNs) that mitigate overcrowded unlicensed spectrum bands by opportunistically using temporally unoccupied unlicensed and licensed spectrum bands. In this paper, we
Christian H. W. Oey   +2 more
doaj   +1 more source

Resource allocation for OFDMA-based cognitive radio networks with application to H.264 scalable video transmission [PDF]

open access: yes, 2011
Resource allocation schemes for orthogonal frequency division multiple access- (OFDMA-) based cognitive radio (CR) networks that impose minimum and maximum rate constraints are considered.
Bocus, MZ   +5 more
core   +1 more source

PANoptosis in the pathogenesis of myelodysplastic syndromes

open access: yesMolecular Oncology, EarlyView.
PANoptosis, a combination of three types of programmed cell death, is mediated by a large protein complex called a PANoptosome. In healthy bone marrow hematopoietic cells, PANoptosis is restricted by inhibitory signaling. In MDS, bone marrow cells become sensitive to the PANoptotic stimuli due to the aberrant inactivation of inhibitory signaling or ...
Rohit Thalla   +4 more
wiley   +1 more source

DCEEMR: A Delay-Constrained Energy Efficient Multicast Routing Algorithm in Cognitive Radio Ad Hoc Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2014
We discuss the delay-constrained energy efficient multicast routing problem in cognitive radio ad hoc networks. A cognitive radio ad hoc network is a wireless multihop network established by secondary users on varying available spectrum bands.
Xuna Miao, Miaolei Deng
doaj   +1 more source

A Secure and Anonymous Cooperative Sensing Protocol for Cognitive Radio Networks [PDF]

open access: yes, 2011
Spectrum is an essential resource for the provision of mobile services. In order to control and delimit its use, governmental agencies set up regulatory policies.
Helena Rifà-Pous   +3 more
core   +1 more source

Chronobiology of Cancer: How Aging Fuels Oncogenesis at the Molecular Level

open access: yesAging and Cancer, EarlyView.
This graphical abstract illustrates the key biological pathways linking aging with cancer development and progression. In the upper left, cumulative exposure to ultraviolet radiation, toxins, and reactive oxygen species (ROS) causes DNA damage and genomic instability, whereas age‐related decline in repair mechanisms, such as ATM/ATR, BER, and NER ...
Anu Singh, Aroonima Misra, Sufian Zaheer
wiley   +1 more source

Cognitive radio and machine learning modalities for enhancing the smart transportation system: A systematic literature review

open access: yesICT Express
Smart transportation systems implemented through vehicular ad hoc networks (VANET) offer significant potential to improve safety. However, the network faces critical challenges related to security, as well as inadequate spectrum sensing and management ...
Mohd Yamani Idna Idris   +5 more
doaj   +1 more source

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