E-WOM’s Influence on the Consumer’s Behavior at different levels of perceived risk in Online Education Service Industry

Feng Xia,안철옥 한국생산성학회 2022 生産性論集 Vol.36 No.2

Online education service industry has been developing quickly in Korea and China, and the outbreak of the COVID-19 epidemic has made the market scale even larger. Since the result of online education usually takes long time to show, consumers might consider online education service as high-risk taking in terms of time waste. Under this circumstance, e-WOM has became an important way to help the consumers alleviate uncertainty and make purchasing decision more easily and quickly. In China almost all the online education companies consider e-WOM as an important marketing tool. This research aims to study the underlying factors that influence the e-WOM information adoption processing and consumers’ purchasing intention in online education information service industry, especially on how the perceived risk moderates the information adoption process. For this purpose, a dual-route structure are established based on Elaboration likelihood model (ELM), Information Adoption Model (IAM), and Trust Transfer Theory. The new model was validated through structural equation modeling (SEM) based on surveys of 460 questionnaires which were sent to consumers in China with the experience of purchasing online education services. E-WOM usefulness (by the influence of quality of e-WOM and informative CSII; Consumers Susceptibility to Interpersonal Influence) and e-WOM emotional trust (by the influence of credibility of e-WOM information, normative CSII, and subject knowledge) are both proved to have a positive influence on e-WOM information adoption. Perceived risk is proved to play a moderating role in the process. In addition, academic and managerial implications are discussed.

Preventative effects of Lactobacillus plantarum YS-3 on oxazolone-induced BALB/c colitis in mice

Feng, Xia,Zhang, Jing,Qian, Yu,Yi, Ruokun,Sun, Peng,Mu, Jianfei,Zhao, Xin,Song, Jia-Le The Korean Society for Applied Biological Chemistr 2018 Applied Biological Chemistry (Appl Biol Chem) Vol.61 No.3

In this study, the preventative effects of Lactobacillus plantarum YS-3 (LP-YS3) on colitis were studied using an in vitro animal experiment. Oxazolone was administered to BALB/c mice to induce colitis, and the preventive effects of LP-YS3 were determined using serum- and tissue-related indexes. The mice treated with LP-YS3 showed a significant decrease (p<0.05) in disease activity index for colitis by inhibiting colon shortening and increasing colon weight/length ratio. The application of LP-YS3 resulted in a significant reduction in myeloperoxidase, nitric oxide, and malondialdehyde activities and a decrease in glutathione activity (p<0.05) in mouse colon tissues. LP-YS3 also significantly increased serum interleukin-2 and reduced interleukin-10 cytokines levels in mice (p<0.05). Reverse transcription-polymerase chain reaction and western blot assays showed that LP-YS3 application resulted in a significant increase in neuronal nitric oxide synthase, endothelial nitric oxide synthase, c-Kit, and stem cell factor expressions and a decrease in inducible nitric oxide synthase, interleukin-8, and C-X-C motif chemokine receptor 2 expressions in mouse colonic tissues (p<0.05). These findings indicate that LP-YS3 imparts preventative effects on oxazolone-induced colitis in mice.

Research on Intelligent Logistics Information Systems based on Port Supply Chain Management : A Case Study of Zhejiang Jiulong

Feng Xia 한중경상학회 2015 한중경상연구 Vol.14 No.1

With the rapid development of intelligent logistics technology and port economy in China, research and establishment of intelligent logistics information system has become an important consideration in the competition of port supply chains. The first port supply chain intelligent logistics e-commerce platform successfully developed by Chinese private enterprise is introduced in this paper. In addition, its overall design is illustrated and the economic benefits this platform brought for port supply chain management is analyzed.

LOW TEMPERATURE SYNTHESIS OF Fe-DOPED ZnO NANOROD BUNDLES IN AQUEOUS SOLUTION

FENGXIA GENG,HUI-MING CHENG,ZHIGANG ZHAO,HONGTAO CONG,JINBO BAI 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2006 NANO Vol.1 No.2

Pure and Fe-doped ZnO nanorod bundles were synthesized in aqueous solution at low temperature, in which inexpensive reagents such as Zn(NO3)2, NaOH and Fe(NO3)3 were used as precursors. The composition of the final product can be roughly tuned by the precursor ratio used. Energy dispersive X-ray spectroscopy confirms the successful incorporation of Fe element into ZnO nanorods, and X-ray diffraction reveals that ZnO nanorod bundles have a pure hexagonal wurtzite-phase structure. UV–vis spectroscopy show that the spectrum shifts to longer wavelength with increasing iron doping.

Effect of Different Blade Numbers on the Radial Force of Pump as Turbine in Transient Process

FengXia Shi,DeDong Ma,WanYong Zhao,HuTing Peng,YunSheng Liang 한국유체기계학회 2021 International journal of fluid machinery and syste Vol.14 No.2

In order to analyze the influence of the number of blades on the radial force characteristics of pump as turbine during the variable flow rate transition process, six impellers with different number of blades are designed. On the basis of verifying the correctness of the numerical calculation method by the external characteristic experiment, the steady and unsteady numerical simulation of each scheme is carried out by ANSYS-CFX software, the radial force characteristics on impellers with different schemes are compared and analyzed. The results show that during the transition process of variable flow rate, the radial force vector and its fluctuation range on the impeller gradually decreases with the increase of the number of blades. The radial resultant force obviously increases with the increase of time in the transition to large flow rate, and obviously decreases with the increase of time in the transition to small flow rate. The dominant frequency of the radial force is equal to leaf frequency, and the pulsation amplitude of the radial force of Z9 is the minimum in both transition processes. In the transition process of variable flow rate, when the number of blades is Z9, the efficiency is the highest, the radial force on the impeller is the minimum, and the pulsation amplitude of the radial force is also the smallest, so for this pump as turbine, the value of blade number equals 9 is the optimal.

The Research of a Novel Weighted Association Rules Algorithm Based On Unidirectional FP Tree

Fengxia Yang,Kehao Cao 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.11

Weighted association rules are to research on association rule mining expansion. It is aimed at users of different project importance of different database mining, to help users find interesting association rules, but also does not produce too many useless rules. The most important process of weighted association rules mining is weighted to generate frequent item sets. Unidirectional FP- tree node entry's serial number marking and recording the support count. Item number by the support from big is to small order determination. The paper presents the research of a novel weighted association rules algorithm based on unidirectional FP tree. Implementation results show that the algorithm unidirectional FP running efficiency is relatively high.

Expression, Purification, and Characterization of a Recombined Fibrinolytic Enzyme from Endophytic Paenibacillus polymyxa EJS-3 in Escherichia coli

Fengxia Lv,Chong Zhang,Fangfang Guo,Yingjian Lu,Xiaomei Bie,Hui Qian,Zhaoxin Lu 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.1

The gene encoding the fibrinolytic enzyme (PPFE-I) from Paenibacillus polymyxa EJS-3 was cloned and sequenced (Genbank No. KC176802). The 1773 bp gene encoded 590 amino acids and had low homology with other known fibrinolytic enzymes. PPFE-I was soluble and expressed in E. coli BL21 to enhance the activity. The recombinant enzyme (rPPFE-I) was purified to homogeneity, and enzymatic properties were characterized. The optimal temperature and pH for rPPFE-I were 37℃ and 7.5, respectively. Observed activities of rPPFE-I were highest in the presence of Zn2+, Mg2+, and Fe2+ and the lowest in the presence of Ca2+ and Cu2+. The rPPFE-I activity was strongly inhibited by PMSF. The α-chain was affected by the rPPFE-I cleavage speed of fibrinogen, followed by the b and γ chains. The inhibitory effects of rPPFE-I against ADP-induced human platelet aggregation were dosedependent with an IC50 value of 1.54 μM.

Effect of Different Guide Vane Numbers on Transient Radial Force of Pump as Turbine

FengXia Shi,JunHu Yang,XiaoHui Wang 한국유체기계학회 2018 International journal of fluid machinery and syste Vol.11 No.1

Guide vane was added to pump as turbine (PAT), the transient flow characteristics of PAT were calculated and experimented under different guide vane numbers. The results show that after the PAT was added guide vane, the distribution of speed streamline and blade load is more uniform than before, and the unsteady radial force on impeller decreased greatly, which is good for the stability of PAT’s operation. When the guide vane number is equal to 9, both the maximum radial force difference and dominant frequency amplitude of radial force are the minimum. So there is an optimal guide vane number, for the given geometric parameters of PAT.

Analysis on Characteristic of Pressure Fluctuation in Hydraulic Turbine with Guide Vane

FengXia Shi,JunHu Yang,XiaoHui Wang 한국유체기계학회 2016 International journal of fluid machinery and syste Vol.9 No.3

An unsteady three-dimensional simulation based on Reynolds time-averaged governing equation and RNG k-ε turbulence model, was presented for pump-as-turbine, the pressure fluctuation characteristic of hydraulic turbine with guide vane was obtained. The results show that the time domains of pressure fluctuation in volute change periodically and have identical cycles. In volute tongue and inlet pressure fluctuations are light, while in dynamic and static coupling interface pressure fluctuations are serious; In impeller blade region the pressure fluctuation of pressure surface are lighter than that of suction surface. The dominant frequencies of pressure fluctuation concentrate in low frequency region, and concentrate within 2 times of the blade passing frequency.

State‑of‑the‑art review and bibliometric analysis on electro‑Fenton process

Fengxia Deng,Jizhou Jiang,Ignasi Sir?s 한국탄소학회 2023 Carbon Letters Vol.33 No.1

The electro-Fenton (EF) process was first proposed in 1996 and, since then, considerable development has been achieved for its application in wastewater treatment, especially at lab and pilot scale. After more than 25 years, the high efficiency, versatility and environmental compatibility of EF process has been demonstrated. In this review, bibliometrics has been adopted as a tool that allows quantifying the development of EF as well as introducing some useful correlations. As a result, information is summarized in a more visual manner that can be easily analyzed and interpreted as compared to conventional reviewing. During the recent decades under review, 83 countries have contributed to the dramatic growth of EF publications, with China, Spain and France leading the publication output. The top 12 most cited articles, along with the top 32 most productive authors in the EF field, have been screened. Four stages have been identified as main descriptors of the development of EF throughout these years, being each stage characterized by relevant breakthroughs. To conclude, a general cognitive model for the EF process is proposed, including atomic, microscopic and macroscopic views, and future perspectives are discussed.