Results 91 to 100 of about 28,195 (203)

Immunomodulatory exosomes loaded chitosan methacryloyl hydrogel combined with pro-chondrogenic microspheres for promoting articular cartilage regeneration

Materials & Design
A diverse range of biological materials has been widely used for the management of injuries to joint cartilage. However, suboptimal outcomes in cartilage repair are often due to inappropriate host immune responses and inadequate microenvironments for ...
Ruoyu Liang, Zhaoxu Li, Qu Xu, Shengtao Wang, Dongxu Chen, Peng Gui, Mingzhou Chen, Wei Peng, Jian Su   +8 more
doaj   +1 more source

Performance analysis of distributed cluster-based MAC protocol for multiuser MIMO wireless networks

EURASIP Journal on Wireless Communications and Networking, 2011
It is known that multiuser multiple-input multiple-output (MIMO) communication can enhance the performance of wireless networks. It can substantially increase the spectral efficiency of wireless networks by utilising multiuser interference rather than ...
Ettefagh Azadeh, Kuhn Marc, Eşli Celal, Wittneben Armin   +3 more
doaj  

Advent of PHY and MAC Layer Operations in Wireless and Local Personal Area Network [PDF]

ICTACT Journal on Communication Technology, 2013
Carrier sense multiple access with collision avoidance (CSMA-CA) algorithm is implemented on AT86RF230 Trans-receiver, which is done in Physical layer. As the number of nodes is increased, power efficiency of CSMA-CA algorithm is decreased.
Shama B N
doaj  

Pseudo-Bayesian stability of CSMA and CSMA/CD local area networks

, 1988
This thesis investigates the stability of the random multiaccess protocols, slotted CSMA and slotted CSMA/CD, utilizing one power level and two power levels to create beneficial power capture effect. Use of more than two equally spaced power levels provides no significant improvement in the throughput achievable when realistic capture thresholds are ...
openaire   +1 more source

Simulation Research of 2.4 GHz IEEE 802.15.4 Network Based on ABE Algorithm

Gong-kuang zidonghua, 2010
For problems of data-package collision and network degradation caused by slotted CSMA/CA standard algorithm used in MAC layer of IEEE 802.15.4 network, the paper used ABE algorithm to improve the standard algorithm, and used NS-2 software to simulate ...
SHENG Xi-ning
doaj  

4D-printed Fe3O4-PLLA scaffolds modulate osteoimmune microenvironment for oral bone repair. [PDF]

Mater Today Bio
Song W, Huang W, Du Z, Xiao C, Qu J, Xu W, Liu X.   +6 more
europepmc   +1 more source

Prognostic evaluation of sarcopenia with radiological and laboratory parameters in geriatric head and neck cancer patients. [PDF]

Discov Oncol
Basaran Goksen H, Uylar Seber T, Arslan A.   +2 more
europepmc   +1 more source

Dynamic time slot allocation method for deterministic communication in UAV formation. [PDF]

Sci Rep
Xiao J, Huang J, Chen Q, Xu C, Zhao G.
europepmc   +1 more source

Energy efficient UAV-assisted two layer hierarchical bit-mapping access based MAC protocol. [PDF]

Sci Rep
Narayan Golatkar D, Tolani M, Pai SN, Vilas Mahadik Y, Kumar P, Suman G.   +5 more
europepmc   +1 more source

An ns-3 Evaluation Framework for Receiver-Initiated MAC Protocols with Configurable Enhancement Modules Across Various Network Scenarios. [PDF]

Sensors (Basel)
Murata T, Sakamoto S, Kawanami T.
europepmc   +1 more source