Results 1 to 10 of about 190,703 (303)

Multi-Band Vehicle-to-Vehicle Channel Characterization in the Presence of Vehicle Blockage

IEEE Access, 2019
Vehicle-to-vehicle (V2V) channels exhibit unique properties due to the highly dynamic environment and low elevation of the antennas at both ends of the link.
Mate Boban, Diego Dupleich, Naveed Iqbal, Jian Luo, Christian Schneider, Robert Muller, Ziming Yu, David Steer, Tommi Jamsa, Jian Li, Reiner S. Thoma   +10 more
doaj   +1 more source

Coverage, Capacity, and Error Rate Analysis of Multi-Hop Millimeter-Wave Decode and Forward Relaying

IEEE Access, 2019
In this paper, we analyze the end-to-end (e2e) performance of a millimeter-wave (mmWave) multi-hop relay network. The relays in it are decode-and-forward (DF) type.
Khagendra Belbase, Chintha Tellambura, Hai Jiang   +2 more
doaj   +1 more source

Manipulation of Colloidal Flocbots for Flow Control

Nano Select
Localized control of blood flow is essential for vascular therapies but current embolization strategies often rely on invasive catheter‐based delivery of passive embolic agents.
Aaron K. Ishiki, Trevor D. Tong, David W. M. Marr   +2 more
doaj   +1 more source

The Positive and Negative Effects of Green Space on PM_2.5 Concentrations: A Review

Atmosphere
Fine particulate matter (PM2.5) can have considerable negative effects on human health. An increasing number of scholars are finding that green space can not only decrease PM2.5 levels but also exacerbate PM2.5 levels.
Junyou Liu, Bohong Zheng, Jiawei Li
doaj   +1 more source

Research on the Adaptability of Slotted Screen Pipe Based on Genetic Algorithm

Shiyou jixie
In conventional sand control design,the selection of slotted screen only takes into account the particle size data of the reservoir,which has certain limitation in practical application,and often results in blockage of slotted screen surface by formation
Deng Fucheng, Xiao Yunchen, Hou Xuejun, Yang Dong, Gui Fulin   +4 more
doaj  

The blockage problem

, 2012
We investigate the totally asymmetric exclusion process on Z, with the jump rate at site i given by r_i=1 for i nonzero, r_0=r. It is easy to see that the maximal stationary current j(r) is nondecreasing in r and that j(r)=1/4 for r>=1; it is a long outstanding problem to determine whether or not the critical value r_c of r such that j(r)=1/4 for r ...
O. Costin, J. L. Lebowitz, E. R. Speer, A. Troiani   +3 more
openaire   +4 more sources

Distinguishing Micromobility and Blockage in 6G Sub-THz Systems: A Machine Learning Approach

IEEE Open Journal of the Communications Society
Dynamic human body blockage and user equipment (UE) micromobility in the hands of a user are two impairments that may lead to connectivity losses in 5G millimeter wave (mmWave, 30-100 GHz) and 6G sub-terahertz (sub-THz, 100-300 GHz) systems.
Humayra Anjumee Jeba, Anna Gaydamaka, Dmitri Moltchanov   +2 more
doaj   +1 more source

Meta analysis of application of positive pressure connector in infusion with superficial venous indwelling needle infusion

Huli yanjiu, 2017
To probe into the difference between the incidence of blocked tubes and the incidence of phlebitis in patients with superficial venous catheter when using positive pressure connector and heparin cap joint.Methods:China Wanfang database，CNKI database(CNKI)
范燕华, 王春燕, 刘重斌
doaj  

Field Evaluation of 5G mmWave Relays in Various Topologies: NLOS Coverage Enhancement and Tolerance Against Blockage

IEEE Access
As time progresses, the use of higher frequencies becomes increasingly necessary due to the growing issue of frequency congestion. While discussions are ongoing regarding the potential use of millimeter-wave (mmWave) frequencies introduced in 5G for the ...
Naoya Okubo, Keishi Tokugawa, Jin Nakazato, Suwen Ke, Yiming Chen, Gia Khanh Tran, Kei Sakaguchi, Mitsuhiro Kuchitsu, Tsuyoshi Itagaki   +8 more
doaj   +1 more source

Canalicular Blockage [PDF]

Australian and New Zealand Journal of Ophthalmology, 1973
openaire   +2 more sources