Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Zhi-Hua Bao"'
Publikováno v:
Symmetry, Vol 16, Iss 8, p 989 (2024)
In the paper, (1) in view of a general formula for any derivative of the quotient of two differentiable functions, (2) with the aid of a monotonicity rule for the quotient of two power series, (3) in light of the logarithmic convexity of an elementar
Externí odkaz:
https://doaj.org/article/5614d53db5e345e2bdfd2df33f8003b4
Publikováno v:
Ecotoxicology and Environmental Safety, Vol 225, Iss , Pp 112749- (2021)
The effects of long-term rare earth element (REE) and heavy metal (HM) contamination on soil bacterial communities remains poorly understood. In this study, soil samples co-contaminated with REEs and HMs were collected from a rare-earth tailing dam.
Externí odkaz:
https://doaj.org/article/45be7b0a7a0640e6a4c5674b4989d00d
Publikováno v:
IEEE Access, Vol 6, Pp 18705-18712 (2018)
This paper introduces a new dual-mode dielectric patch resonator (DPR), which consists of a thin square dielectric patch with high permittivity and a low-permittivity substrate with bottom ground plane. A pair of TM11 degenerate modes can act as the
Externí odkaz:
https://doaj.org/article/349d6d8514ca4370b1121d3645f3755d
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
Abstract In this paper, a spoof surface plasmon polarions (SPPs) transmission line is designed by patterning thin metal film in open-cross shape arranged in array. Numerical simulations show the proposed open-cross array can support spoof SPPs with e
Externí odkaz:
https://doaj.org/article/4f25a2cb3bc34fc3a8ec097285d6980f
Publikováno v:
Tongxin xuebao, Vol 38, Pp 81-93 (2017)
The capacity issue of a denoise-and-forward(DNF) protocol was focused on based PNC system of frequency non-selective Rayleigh fading channel.First,the total sum-rate of the system was derived.With the derived sum-rate expression,two policies maximizi
Externí odkaz:
https://doaj.org/article/a02b0b9a9cbf4e55962f51d87d331c55
Publikováno v:
Tongxin xuebao, Vol 37, Pp 42-48 (2016)
A passive cluster model with the maximum lifetime was proposed for vehicle to vehicle communication based on the relative velocity. The cluster head was elected based on the average relative velocity and the neighbor list. The cluster lifetime was de
Externí odkaz:
https://doaj.org/article/13b0e04cc43443f6b4bf74a0766d6147
Publikováno v:
Tongxin xuebao, Vol 35, Pp 86-93 (2014)
To make up for the shortcomings of the information control in RFID systems, an information monitor method of passive RFID systems based on emitter identification was proposed. The emitted RF signal of the passive RFID tag was acquired and transformed
Externí odkaz:
https://doaj.org/article/ae00c39666884735adeb92f2ab327451
Publikováno v:
Tongxin xuebao, Vol 34, Pp 119-125 (2013)
In order to improve the benefits generated by spectrum sharing, the spectrum management was studied and the agent-based dynamic spectrum trading algorithm was proposed. In the algorithm, the agent was used as a medium for spectrum trading, which redu
Externí odkaz:
https://doaj.org/article/27b9d16c71754292a2b740530190e9ca
Publikováno v:
Tongxin xuebao, Vol 33, Pp 128-135 (2012)
Aim at the shortages of the cooperative algorithm in sensing and time slot spent,an optimal cognitive users pairing and cooperative sensing algorithm was proposed.To achieve the best sensing performance,the pairing criterion was adopted where the one
Externí odkaz:
https://doaj.org/article/d31bb856d62a4578800209746ba5e73b
Publikováno v:
Tongxin xuebao, Vol 32, Pp 3-10 (2011)
Based on the optimal pairing the subcarriers of uplink and downlink,a spectrum resource allocation algorithm was proposed according to the subcarrier characteristics of the uplink and downlink in cognitive relay networks.The algorithm allocated the s
Externí odkaz:
https://doaj.org/article/2e9ff72b1bc64768b10bf96975b74087