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Online since: August 2013
Authors: Li Tian, Yu Wei Dai, Chao Liu, Wen Feng Li
Teng et al. [1] investigated the control of wind-induced vibration of the TV tower mast on Shenzhen Wutong Mountain, which provide theoretical basis for TMD used in suppressing seismic response of high rise structure.
Deng et al. [4] studied wind vibration control experiment based on 500kV Jiangyin large span tower, and verified the design program of tuned mass damper (TMD) and viscoelastic dissipater (VED).
The comparisons of time history responses of transmission tower to El Centro earthquake excitaiton are shown in Fig. 4.
Gao, et al.: Earthquake Resistant Engineering and Retrofitting.
Li et al.: Earthquake Resistant Engineering and Retrofitting.
Online since: February 2016
Authors: S.V. Nescoromniy, S.O. Ageev, E.L. Strizhakov, Dmitrii Rogozin
Nescoromniy1,a, E.L.
Welding joint zone, Al + Al × 100 Development of the equipment with inductors.
[3] Nescoromniy S.V., Ageev S.O., Rogozin D.V., Strizhakov E.L.
[7] Strizhakov E.L.
Influence of a preliminary static load on process elastic – magnetic – impulse stamping / E.L.
Online since: July 2011
Authors: Donato Cancellara, Mario Pasquino
As seismic actions, have been adopted the following registrations: an anomalous earthquakes for intensity and in particular El Centro earthquake (N00W component, 1940) with different amplification factors; an anomalous earthquake for frequency content and in particular Erzincan earthquake (N90W component, 1992).
The HDHSI device is in contrast with R-FBI (Resilient-Friction Base Isolation) isolator proposed by Mostaghel et al. (1987) and wants to be an optimization of EDF (stands for one of two companies – Electricité De France) system proposed by Gueraud et al. (1985).
The seismic response has been studied by considering the following seismic events: El Centro - California (component N00W, 1940) and Erzincan - Turkey (component N90W, 1992).
In particular, referring to the El Centro earthquake (seismic event compatible to SLC provided by D.M. 14.01.2008) amplification factors =1.5 e 2.0 has been used, in order to consider anomalous seismic events for intensity.
Power Spectral Density El Centro (component N00W, 1940).
Online since: February 2019
Authors: Hichem Farh, Rebai Guemini, Abd Elouahab Noua, Oussama Zaoui, Tarek Diab Ounis, Hanene Houadsi, Hadia Aounallah
Al-Ghamdi, M.
El-Nahass, M.
El-Hagary, “Structural, optical and dispersion energy parameters of nickel oxide nanocrystalline thin films prepared by electron beam deposition technique,” J.
Al-Agel, “Synthesis, characterization and optical properties of NiO: Cs thin film,” Mater.
Moghe et al., “Effect of copper doping on the change in the optical absorption behaviour in NiO thin films,” Renew.
Online since: January 2020
Authors: Leonid Moiseevich Gurevich, Aleksey Serov, Dmitri Pronichev
Isaacs et al.
Stiller, The precipitation sequence in Al–Mg–Si alloys.
[20] Kamal El-Menshawy, Abdel-Wahab A.
El-Sayed, Mohammed E.
El-Bedawy, Hafez A.
Online since: March 2014
Authors: Fei Deng, Yan Xiong
Using the fitting curves of the OLEDs’ electroluminescent (EL) characteristics, RGBW four-primary display is clearly shown to be more energy efficient than traditional RGB three-primary display, especially as the efficiency of the OLEDs is getting higher.
In this work, we present a novel method to characterize the display performance over the whole color space utilizing the fitting curves of the OLEDs’ electroluminescent (EL) characteristics based on the experimental data of a real device, and the advantage of this novel four-primary displays can be clearly understood.
An efficient white emitting polymer OLED device is fabricated whose configuration is ITO/PEDOT/PVK:OXD-7:Firpci:Ir(piq)/Ba/Al, its J-V-L characteristics is shown in Fig.1, and the CIE coordinates of the EL device is (0.33, 0.36) which is very close to those of HDTV D65 white light.
Current density (J) -operation voltage (V)- luminance (L) characteristics of fabricated white PLEDs, the device configuration is ITO/PEDOT/PVK:OXD-7:Firpci: Ir(piq)/Ba/Al.
Online since: January 2022
Authors: Dmytro Kosiachevskyi, Evelyne Prat, Mohend Chaouche, Anne Daubresse, Kamilia Abahri
There are a lot of works on the properties of wood (El Hachem et al., 2019, 2017), straw (Ren et al., 2019), cork (Jerónimo et al., 2020; Pacheco Menor et al., 2019; Panesar and Shindman, 2012), jute (Garikapati and Sadeghian, 2020) and hemp (Walker et al., 2014).
It could be the direct access of water in the case of the protocol of (Sentenac et al., 2017) or too high relative humidity as in the study of (Marceau et al., 2017) and (Delannoy et al., 2020).
[2] Bennai, F., El Hachem, C., Abahri, K., Belarbi, R., 2019.
RILEM Technical Letters 4, 16–21. https://doi.org/10.21809/rilemtechlett.2019.80 [3] Bennai, F., El Hachem, C., Abahri, K., Belarbi, R., 2018.
Construction and Building Materials 252, 119043. https://doi.org/10.1016/j.conbuildmat.2020.119043 [6] El Hachem, C., Abahri, K., Bennacer, R., 2019.
Online since: November 2012
Authors: Yi Fu, Ji Zhao, Han Bo Wang
Inspired by trajectory analysis of the PSO and quantum mechanics, Sun et al. developed and proposed the quantum-behaved particle swarm optimization (QPSO) algorithm[11,12].
Each experiment run for 30 times independently and the mean values of location error El and standard deviation of the results are recorded.
(a) Locations estimated by QPSO (b) Locations estimated by PSO Fig.1 Results of locations estimated based on QPSO and PSO Table 1 Simulation results for 30 times run Mean of El Min El Max El SD QPSO 0.353126 0.183302 0.628563 0.12309 PSO 0.711063 0.205839 1.707619 0.285847 Table 2 A summary of results of QPSO and PSO-based WSN node location QPSO PSO Iteration NL EL NL EL 1 10 1.3457 9 1.6478 2 26 0.8954 26 1.4389 3 45 107.6743* 45 29.9491* 4 48 10.2364 48 9.6539 5 50 1.8905 50 1.9723 * These causes represent large location errors due to flip ambiguities which the system corrected in subsequent iterations Acknowledgements This work was financially supported by the College-level Key Project of Wuxi City College of Vocational Technology (WXCY-2011-GZ-006).
Goldenberg, et al.: IEEE Trans.
Wang, et al.: A two-phase localization algorithm for wireless sensor network, in Proc.
Online since: June 2013
Authors: Thomas Antretter, Hans Peter Gänser, Markus Orthaber
Nevertheless, recent 3D dislocation dynamics calculations by Devincre et al.
We assume multiplicative decomposition into an elastic and a plastic contribution Fij = F(el) ik F(pl) kj (14) as well as volume preservation during plastic deformation det Fij ≡ J , det F(pl) ij = 1 → det F(el) ij = J , (15) where J denotes the Jacobi determinant of the deformation gradient.
The velocity gradient is calculated using the deformation gradient as Lij = ˙FikF−1 kj = L (el) ij + F(el) ik L (pl) kl F(el)−1 lj . (16) On the other hand, its plastic part is identified to be the superposition of individual slip rates together with slip plane normal and slip direction L (pl) kl = ∑ α ˙γαtαknαl , (17)i.e., in complete analogy to the Schmid tensor weighted linear combination used in the preceding section.
Inserting equation (17) into equation (16) gives Lij = L (el) ij + ∑ α ˙γα˜tαi ˜nαj , (18) with ˜tαi and ˜nαj being the pushed forward quantities tαi and nαj from the undeformed to the deformed configuration, i.e., ˜tαi = F(el) ij tαj , ˜nαj = nαi F(el)−1 ij .
The symmetric and antisymmetric parts of Lij are the rate of deformation tensor Dij and the continuum spin tensor Wij Dij = D(el) ij + ∑ α ˙γα1 2 (˜tαi ˜nαj + ˜nαi ˜tαj ) = D(el) ij + ∑ α ˙γαSαij (19) Wij = W(el) ij + ∑ α ˙γα1 2 (˜tαi ˜nαj − ˜nαi ˜tαj ) = W(el) ij + ∑ α ˙γαAαij (20) Then the objective derivative of the Kirchhoff stress is ▽ K(el)ij= ˙Kij − W(el) ik Kkj + KikW(el) kj = Λijkl (Dkl − ∑ α ˙γαSαkl) , (21) again with Λijkl being the fourth order elasticity tensor.
Online since: September 2013
Authors: Guo Hua Xing, Yu Ran, Wen Fei Kou
This paper uses time history analysis method to consider the effect of 3 kinds of seismic waves(El-Centro, Taft and a set of artificial wave (recorded as Rgb) ) for 5 kinds of models by means of finite element software Ansys, analyse seismic response with each model, study the influence of different types of stairs to overall frame structures[6].
In X direction maximum top displacement for different models gradually increase from LT-2, LT-3, LT-4, LT-5 to LT-1 under the action of El-Centro and Rgb wave, gradually increased from LT-2, LT-4, LT-3, LT-1 to LT-5 under the action of Taft wave.
(a) El-Centro (b) Taft (c) Rgb Fig.2 Time history of top displacement for X-direction (a) El-Centro (b) Taft (c) Rgb Fig.3 Time history of top displacement for Y-direction In Y direction maximum top displacement for different models gradually increase from LT-2, LT-3, LT-4, LT-1 to LT-5 under the action of El-Centro wave, gradually increased from LT-2, LT-4, LT-3, LT-1 to LT-5 under the action of Taft and Rgb wave.
Vol.30 (2008), p.412 [4] Sang B K,Young H L,Andrew S,et al: J.
Vol.64 (2008), p.253 [5] Halil S,Ramazan A,Adem D,et al: J.
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