Xie H.,Jiangxi Science and Technology Normal University |
Yan Y.,Jiangxi Science and Technology Normal University |
Hou Y.C.,Shangqiu Polytechnic
International Journal of Multimedia and Ubiquitous Engineering | Year: 2016
As a powerful tool for phase transition analysis, the mean-field theory of rumor spreading brings us a new method for research in Online Social Networks (OSN). Based on the theory of complex networks, we simulate the complex process of rumor spreading in OSN. Using numerical simulations with focus on the information spreading threshold as well as critical behaviors, we study the Susceptible-Infected-Recovered- Susceptible (SIRS) information dynamics model in OSN with asymmetric propagation. Basic principle and structure of OSN were analyzed. We present a rumor spreading model, where the influence of the neighbor trees is treated in a more realistic way and the definition of a neighborhood can be tuned by an additional parameter. Based on the mean-field theory approach, a contact network model with scale-free property is built. It is demonstrated that the asymmetry of propagation plays important role: We could redistribute the asymmetry to balance the degree heterogeneity of the network and then to restore the information threshold to a finite value. The relationship of spreading probability, network size, infected fraction and infected ratio are showed respectively in the paper. Our model exhibits a surprisingly sharp phase transition which can be shifted by a redefinition of the neighborhood. The result shows that the SIRS model built in this paper is valid and the simulation of the information propagation is feasible. © 2016 SERSC.
Zhang Y.-L.,Shangqiu Polytechnic
Zhuzao/Foundry | Year: 2014
In order to improve the wear resistance of ordinary carbon steel, 3.0%-3.5%B was added in the raw materials of lowcarbon steel. The microstructure and the XRD analysis shows that the microstructure of as cast alloy consists of ferrite, pearlite and Fe2B. Fe2B forms continuous reticulation and distributes along the grain boundary, ferrite is irregular block, distributes in the boride around, a lamellar pearlite distributes in middle of the boride and ferrite. After 980℃ × 2 h+250℃ × 4 h quenching and tempering heat treatment, ferrite and pearlite all change to lath martensite with good strength and toughness. The local reticular structure of Fe2B was break, but still form mesh distribution. After the test, the hardness of casting alloy is HRC≥60.2, impact toughness≥12.5 J/cm2, the wear resistance is increased by 2.5 times compared with 40Gr steel. It can be applied as the metal material withexcellent wear resistance.
Li B.,Shangqiu Normal University |
Ren Y.,Shangqiu Polytechnic |
Chang B.,Nanjing University of Science and Technology |
Chen W.,Shangqiu Normal University
Bandaoti Guangdian/Semiconductor Optoelectronics | Year: 2016
It is necessary to evaluate GaN photocathode with scientific method. The measurement and evaluation system for GaN photocathode was designed based on multi-information measurement system for GaAs photocathode by adding UV light source and re-programming evaluation software. Multiple measurements such as Cs source current, O source current, photocurrent and vacuum of activation chamber of GaN photocathode in preparation were tested in the measurement and evaluation system, and the evaluations were carried out on GaN photocathodes by their activated spectral response. © 2016, Editorial Office of Semiconductor Optoelectronics. All right reserved.
Liu Y.M.,Shangqiu Medical College |
Zhang C.L.,Shangqiu Polytechnic |
Lou S.F.,Shangqiu Medical College |
Wang Q.,Shangqiu Medical College
Applied Mechanics and Materials | Year: 2014
Corrosion inhibitor-inorganic clay composite including 2-mercaptobenzimidazole(MBI) anions intercalating Zn-Al layered double hydroxides(LDHs) assembled via anion-exchange reaction. Powder X-ray diffraction(XRD) and Fourier transform infrared(FT-IR) spectrum analysing and scanning electron microscopy(SEM) indicate that the MBI anion are successfully intercalated into the LDHs interlayer. The benzene plane is horizontal arrangement rather than vertical orientation in the interlayer spacing. The active anticorrosive property of AA2024 alloy with the active anticorrosion coating is evaluated by electrochemical impedance spectroscopy(EIS). The sol-gel coating doped with the LDHs clearly demonstrates long-term anticorrosive performances compared to the undoped sol-gel coating, due to the release of corrosion inhibitor from the LDHs. © (2014) Trans Tech Publications, Switzerland.
He X.,Henan Agricultural University |
Wang D.,Henan Agricultural University |
Wang D.,Northeast Agricultural University |
Zhang Y.,Shangqiu Polytechnic |
Tang Y.,Henan Agricultural University
BioResources | Year: 2016
To improve the bonding strength between adhesive and enhance the performance of composite board made from corn stalk rinds, a method for preparing three-layer composite boards was proposed. Accordingly, corn stalk rinds with the epidermis removed, were used as the core layer, while crushed aggregates from the epidermis were used as the surface layer of the composite board. Single-factor and orthogonal experiments were conducted to analyze the effects of the sampling height of corn stalk rinds, the surface layer proportions, and the hot-pressing temperature and time on the physico-mechanical properties of composite board. The resulting composite board from corn stalk rinds showed enhanced properties, except for the internal bond strength (P < 0.01). The physical properties of the composite board were significantly improved (P < 0.01) by removing the crushed aggregates of the epidermis, forming a single layer of composite board. The optimal parameters were as follows: the sampling height below the ear part of the corn stalk rinds; 12% surface layers; 150 °C hot-pressing temperature; and 6 min time. Under these conditions, the physico-mechanical properties of the composite board met the requirement level for particleboard. This research supports the use of corn stalk rinds as composite boards.