Research on Influencing Factors of Chinese Mobile Communication Customers’ Switching Intention by Mobile Number Portability

Miao Miao,Jia Jia,Rui Tingting,Xiong Fangping,Li haibo 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.4

In order to explore the Influencing Factors of Switching Intention by Mobile Number Portability .We build up a structural equation model for Chinese mobile customers’ influence factors on MNP intention. Including competitive attraction, subjective norm, and policy perception, customer satisfaction, switching barriers, network quality, awareness rates, perceived service quality, usage habits and switching cost. According to empirical analysis, we find that customers with different perceive levels in MNP polices have significant differences in switching intention. And through the analysis and comparison, we find that the influence factors and the path coefficients of the customers’ switching intention are also different when they have different perceive levels in MNP policy.

Preparation, Characterization and Properties of High-salt-tolerance Sodium Alginate/Krill Protein Composite Fibers

Rui Zhang,Jing Guo,Jing Wu,Miao Zhao,Yuanfa Liu,Yue Yu 한국섬유공학회 2018 Fibers and polymers Vol.19 No.5

Sodium alginate (SA) and krill protein (AKP) were blended to obtain composite solution, and functional SA/AKP composite fibers were prepared via wet spinning. To further improve the salt tolerance, SA/AKP composite fibers were modified with copper sulfate aqueous solution as secondary coagulation bath because of the strong adsorption to copper ions. The CSA/AKP composite fibers with high salt tolerance have been successfully prepared. The intermolecular interaction of SA/AKP composite system and the two-order structure of protein in the composite system were characterized by Fourier transform infrared spectroscopy (FT-IR). Besides, the crystallinity, morphology, mechanical properties, salt tolerance and water resistance and thermal stability of SA/AKP composites were investigated respectively. The results showed that the adsorption rate and the adsorption capacity of the composite solution to copper ion were significantly higher than those to calcium ion. Under the effect of secondary solidification by copper sulfate, the β-sheet chain of the composite fibers increased from 41.48 % to 49.21 %, the intramolecular hydrogen bond increased from 38.18 % to 44.26 %, the intermolecular hydrogen bond decreased from 59.84 % to 54.70 % and free hydroxyl slightly decreased. The water resistance of the modified composite fibers was improved by about 22 %; when the swelling time was 25 min, the salt resistance increased by about 150 %; the number of grooves on the surface of the composite fibers obviously increased, and the grooves on the surface of CSA/AKP composite fibers and the fiber section structure were much denser; Meanwhile, copper sulfate had some influence on the crystallization, thermal stability and mechanical properties of the composite fibers.

Effect of High Energy Shot Peening on the Microstructure and Mechanical Property of AZ31B Mg Alloy/HSLA350 Steel Lap Joints

Rui Li,Xinjian Yuan,Ting Li,Miao Hong,Shiwei Tao,Zhuo Chen,Ge Wang 한국정밀공학회 2021 International Journal of Precision Engineering and Vol.22 No.5

When using high energy shot peening (HESP) technology, the surface layer of the welded joints produced grain breakage and residual compressive stress. When the shot peening strength is the optimal parameter 0.10 MPa, the residual compressive stress reaches a maximum value of 74.02 MPa, dislocation density in welded joints increased significantly and the tensile shear strength of the joint was increased by 18.6% compared to the joint without HESP treatment (205 MPa), and the fracture position of the welded joint was located in the Al alloy base material, these were brought by fi ne grain strengthening and strain strengthening. When the shot peening strength was 0.05 MPa, the strength of the joint was also improved, but the fracture position of the joint was the same as that without HESP treatment, and they were all in the fusion zone. However, when the shot peening strength was further increased to 0.15 MPa, severe cracks appeared inside the joint, which deteriorates the strength of the Mg/steel joint.

Experimental Study on the Properties of Phosphate-Based Materials for Rapid Repair of Concrete Cracks

Rui Wang,Anxiang Song,Xiang Chen,Yuanchen Guo,Xue Wang,Yan Sun,Miao Tian 대한토목학회 2022 KSCE JOURNAL OF CIVIL ENGINEERING Vol.26 No.5

This article studies rapid repair materials by mainly carrying out macro- and micro-performanceimpact tests. The static volumetric method was used to conduct pore volume-aperture analysis and prove the impact of the durability and repair performance of materials. The results show that 1) material impermeability can be effectively improved by increasing the ratio of active ingredients A:B and reducing the water-to-binder ratio. Adding an appropriate amount of fine aggregate can enable one to adjust the microstructure of the repair material, improve the compactness of the material, and effectively improve the impermeability. 2) An increase in the proportion of active ingredient A, water-binder ratio, sand-cement ratio and fly ash content will reduce the self-shrinkage of the specimen; with increasing NS and silica fume content, shrinkage increases. 3) Through analysis of pore size and pore volume, the total pore volume of the repair material is found to be reduced by 16.0% compared with cement mortar. Within a pore diameter range of 2.00 − 10.00 nm, the volume of the repair material increases by 78.9% compared to that for cement mortar. The total volume of the mesopores (2 − 50 nm) in the repair material accounts for 87.7% of the total volume, and the total volume of the mesopores in the cement mortar accounts for 81.23% of the total volume, which further illustrates the excellent macroscopic properties of the repair material.

Improved information fusion approach based on D-S evidence theory

Rui Sun,Hong-Zhong Huang,Qiang Miao 대한기계학회 2008 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.22 No.12

Conventional D-S evidence theory has an unavoidable disadvantage in that it will give counter-intuitive result when fusing high conflict information. This paper proposes an improved method to solve this problem. By reassigning weight factors before fusing, the method can give reasonable results especially when the initial weight factors of conflict evidences are almost equal. It gives an adjustable factor to adjust the reassigning force. An example is given to illustrate these advantages.

Surface coordination and excellent anticorrosion performance of strontiumapatite nanocomposite

Xiu-Rui Liu,Min Miao,Jing-Yu Zhang,JIN-KU LIU,Xian-Mei Zhang,Xiao-Gang Wang 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.80 No.-

A mass-produced, simple and scalable self-heating-based method for the manufacture of surfacecoordination strontiumapatite (SP) nanocomposite with excellent corrosion resistance is proposed. Thereaction heat released from the formation of SP material increases the solubility of benzotriazole (BTA)which achieves reasonable distribution of system energy. The BTA isfirmly adhered on the SP by Sr Ncoordination bond, which acts as barrier impeding on the penetration of the corrosive medium. Scanelectron microscopy (SEM) and X-ray diffraction (XRD) were employed to characterize coatingmorphology and chemical composition. Meanwhile, electrochemical impedance spectroscopy (EIS) datashow that the resultant resistance of strontiumapatite/benzotriazole (SPB) nanocomposite coating was3.02 × 104V cm2, which was improved by 601.8% compared with SP material. The improvement ofcorrosion performance is attributed to the synergistic anticorrosion mechanism that includes theshielding effect, extension of charge transfer paths and formation of multiple passivationfilms. Themethod for organic and inorganic synergistic material provides ideas for the design and synthesis ofanticorrosive materials.

Adaptive lenticular microlens array based on voltage-induced waves at the surface of polyvinyl chloride/dibutyl phthalate gels

Xu, Miao,Jin, Boya,He, Rui,Ren, Hongwen The Optical Society 2016 Optics express Vol.24 No.8

Modification of the plasma complement protein profile by exogenous estrogens is indicative of a compromised immune competence in marine medaka (<i>Oryzias melastigma)</i>

Dong, Miao,Seemann, Frauke,Humble, Joseph L.,Liang, Yimin,Peterson, Drew R.,Ye, Rui,Ren, Honglin,Kim, Hui-Su,Lee, Jae-Seong,Au, Doris W.T.,Lam, Yun Wah Elsevier 2017 Fish & shellfish immunology Vol.70 No.-

<P><B>Abstract</B></P> <P>Growing evidence suggests that the immune system of teleost is vulnerable to xenoestrogens, which are ubiquitous in the marine environment. This study detected and identified the major circulatory immune proteins deregulated by 17α-ethinylestradiol (EE2), which may be linked to fish susceptibility to pathogens in the marine medaka, <I>Oryzias melastigma</I>. Fish immune competence was determined using a host resistance assay to pathogenic bacteria <I>Edwardsiella tarda</I>. Females were consistently more susceptible to infection-induced mortality than males. Exposure to EE2 could narrow the sex gap of mortality by increasing infection-induced death in male fish. Proteomic analysis revealed that the major plasma immune proteins of adult fish were highly sexually dimorphic. EE2 induced pronounced sex-specific changes in the plasma proteome, with the male plasma composition clearly becoming “feminised”. Male plasma was found to contain a higher level of fibrinogens, WAP63 and ependymin-2-like protein, which are involved in coagulation, inflammation and regeneration. For the first time, we demonstrated that expression of C1q subunit B (C1Q), an initiating factor of the classical complement pathway, was higher in males and was suppressed in both sexes in response to EE2 and bacterial challenge. Moreover, cleavage and post-translational modification of C3, the central component of the complement system, could be altered by EE2 treatment in males (C3dg down; C3g up). Multiple regression analysis indicated that C1Q is possibly an indicator of fish survival, which warrants further confirmation. The findings support the potential application of plasma immune proteins for prognosis/diagnosis of fish immune competence. Moreover, this study provides the first biochemical basis of the sex-differences in fish immunity and how these differences might be modified by xenoestrogens.</P> <P><B>Highlights</B></P> <P> <UL> <LI> EE2 exposure reduces fish resistance to pathogen infection. </LI> <LI> The plasma immune proteins of adult fish are sexually dimorphic. </LI> <LI> Exogenous EE2 can modify the immune plasma proteome. </LI> <LI> The interplay between plasma C1Q and exogenous EE2 warrants further investigation. </LI> </UL> </P>

Can Ultrasound be Used to Differentiate Tubular Adenomas of Breast from Fibroadenomas or Carcinoma?

Fu, Ying,Miao, Li-Ying,Ge, Hui-Yu,Mei, Fang,Wang, Jin-Rui Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.3

Breast tubular adenomas are rare benign breast tumors and detailed descriptions of their sonographic appearance are necessary for differential diagnosis from fibroadenomas or breast cancers. This study investigated twenty-one histology-proved tubular adenomas in 17 patients and also included 48 fibroadenomas in 35 patients as a control group. There was no significant difference between the two groups with clinical presentation, which was age, tumor location, tumor number (p>0.05). Statistic analysis showed three significant factors in the differential diagnosis of tubular adenomas and fibroadenomas, including macro-lobulation (p=0.01), "tiny branch like" patterns (p=0.001) and vascularity (p=0.02). Other ultrasonographic features such as echogenicity, border, uniformity of echotexture, posterior acoustic enhancement, lateral wall shadowing were of no clinical significance (p>0.05). Calcifications were seen in three tubular adenomas which were different from those of carcinomas. Although tubular adenomas have some typical characteristics on sonography, surgery and core needle biopsy are still needed for complex cases to exclude progress to malignancy.

Electrochemical Exfoliation of Graphene Flake Embedded in SiNWs as Counter Electrode for Dye-Sensitized Solar Cells

Bairui Tao,Rui Miao,Wenyi Wu,Fengjuan Miao 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2017 NANO Vol.12 No.12

In this paper, a three-dimensional graphene wrapped silicon nanowire (SiNWs) architecture was synthesized by electrochemical exfoliation method and proposed to be the counter electrode for dye-sensitized solar cells (DSSCs). The results show that the few high-quality layers of graphene sheets have been obtained by electrochemical exfoliation method. The size of graphene is distributed from 550 nm to 650 nm, appropriately dispersed onto the SiNW supporter. The graphene/SiNW nanostructure still vertically aligned to the substrate finely. The channel between each wire is clear. The fabricated graphene/SiNWs electrode is a promising structure for future applications. The performance of the graphene/SiNWs as the counter electrode is found to be dependent on its dispersion in the whole backbone, with better dispersion offering more surface areas for the catalytic reduction reaction. Electrochemical tests reveal that the DSSC with graphene/SiNWs exhibits higher electro-catalytic activity and lower charge transfer resistance, suggesting that the 3D structure presents a potential way to fabricate low-cost, integrated and metal-free counter electrode for high-performance DSSCs. The DSSC based on graphene/SiNWs has an open-circuit voltage (Voc) of 738.11 mV, short-circuit current density (Jsc) of 15.48mA cm 2, fill factor (FF) of 0.67 and conversion efficiency (η) of 7.66%.