Results 31 to 40 of about 3,972,632 (293)

Unlocking the Deployment of Spectrum Sharing With a Policy Enforcement Framework

open access: yesIEEE Access, 2018
Spectrum sharing has been proposed as a promising way to increase the efficiency of spectrum usage by allowing incumbent operators (IOs) to share their allocated radio resources with licensee operators (LOs), under a set of agreed rules.
Carlo Galiotto   +5 more
doaj   +1 more source

Probability Model Based Coverage-Enhancing Algorithm for WSNs of Nodes' Adjustable Movement Pattern

open access: yesInternational Journal of Distributed Sensor Networks, 2012
Aimed at the defects of current coverage-enhancing algorithms, firstly the probability model is introduced into the coverage-enhancing algorithm of the directional sensor network based on the virtual potential field, and the probability model would have ...
Junjie Huang   +4 more
doaj   +1 more source

Redundancy Model and Boundary Effects Based Coverage-Enhancing Algorithm for 3D Underwater Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2014
In the study of three-dimensional underwater sensor networks, the nodes would produce changes in perception range under the influence of environmental factors and their own hardware. Requesting all nodes completely isomorphic is unrealistic.
Junjie Huang   +5 more
doaj   +1 more source

Improved Virtual Potential Field Algorithm Based on Probability Model in Three-Dimensional Directional Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2012
In conventional directional sensor networks, coverage control for each sensor is based on a 2D directional sensing model. However, 2D directional sensing model failed to accurately characterize the actual application scene of image/video sensor networks.
Junjie Huang   +3 more
doaj   +1 more source

Firewalling wireless sensor networks: Security by wireless

open access: yes2008 33rd IEEE Conference on Local Computer Networks (LCN), 2008
Networked sensors and actuators for purposes from production monitoring and control to home automation are in increasing demand. Until recently, the main focus laid on wired systems, although their deployment requires careful planning and expensive infrastructure that may be difficult to install or modify.
Martinovic, I, Gollan, N, Schmitt, J
openaire   +3 more sources

Dynamics of Wireless Sensor Networks [PDF]

open access: yesInternational Journal of Distributed Sensor Networks, 2009
Power-Law topology has been proved to be an effective technique to improve fault tolerance. With the motivation of construct reliable topology for wireless sensor networks, a Power-Law Evolving Model (PLEW) of wireless sensor networks by stochastic placement is proposed in this article.
Nan Jiang, Rigui Zhou, Qiulin Ding
openaire   +3 more sources

Preoperative circulating tumor cells integrated with imaging analysis for prognostic evaluation in head and neck squamous cell carcinoma

open access: yesMolecular Oncology, EarlyView.
Detecting circulating tumor cells (CTCs) in blood before surgery may help predict outcomes in patients with head and neck squamous cell carcinoma (HNSCC). Here, we show when combined with tumor size and lymph node involvement from routine imaging, CTC status identifies high‐risk patients with poorer survival—offering a simple, minimally invasive tool ...
Susanne Flach   +9 more
wiley   +1 more source

Secure Clustering Protocols in Wireless Sensor Networks [PDF]

open access: yes, 2016
Wireless sensor networks (WSNs) are poised of huge number of low-cost and tiny devices i.e. senor nodes which communicate over wireless media. Various WSN based projects produced fruitful and interesting results that greatly improves our life.
Sharma, S C, SINGH, SANTAR PAL
core  

Epigenetic silencing of the liver‐specific lncRNA LUNAR promotes liver cancer progression via NOTCH activation

open access: yesMolecular Oncology, EarlyView.
LUNAR is a liver‐specific long noncoding RNA (lncRNA) that is highly expressed in normal liver but becomes epigenetically silenced in hepatocellular carcinoma through promoter hypermethylation. Loss of LUNAR is associated with NOTCH activation, epithelial–mesenchymal transition, and metastasis, whereas restoring LUNAR restrains metastatic progression ...
Se Ha Jang   +9 more
wiley   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

open access: yesFEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno   +3 more
wiley   +1 more source

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