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Zhuoqi Li,Shuhuan Liu,Xiaotang Ren,Mathew Adefusika Adekoya,Jun Zhang,Shuangying Liu 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.2
The 3 MeV proton irradiation effects on SiGe low noise amplifier (LNA) (NXP BGU7005) performanceunder different voltage supply VCC (0 V, 2.5 V) conditions were firstly experimental studied in thispresent work. The S parameters including S11, S22, S21, 1 dB compression point and noise figure (NF) of thetest samples under different bias voltage supply were measured and compared before and after 3 MeVproton irradiation. The total proton irradiation fluence was 1 1015 protons/cm2. The maximumdegradation quantities of the gain S21 and NF of the test samples under zero bias are measuredrespectively 1.6 dB and 1.2 dB. Compared with the samples under 2.5 V bias supply, the maximumdegradation of S21 and NF are respectively 1.1 dB and 0.8 dB in the whole frequency band. It is noteworthy that the gain and NF of SiGe LNAs under zero-bias mode suffer enhanced degradation comparedwith those under normal bias supply. The key influence factors are discussed based on the correlation ofthe SiGe device and the LNA circuit. Different process of the ionization damage and displacement damageunder zero-bias and 2.5 V bias voltage supply contributed to the degradation difference. The underlyingphysical mechanisms are analyzed and investigated
The Influence of E-commerce Logistics Service Quality on Customer Engagement Behavior
Dongxu ZHANG(Dongxu ZHANG),Zhuoqi TENG(Zhuoqi TENG),Mufeng LI(Mufeng LI),Renhong WU(Renhong WU) 국제융합경영학회 2023 융합경영연구 Vol.11 No.2
Purpose: With the rapid development of e-commerce, logistics services, as an important part of e-commerce shopping, have gradually attracted people's attention. Customer engagement behavior is a new topic in marketing, and its connotation is still being explored. The purpose of this paper is to study the relationship between logistics service quality and customer engagement behavior. Research design, data and methodology: This study employed the method of online questionnaire survey, with Chinese e-commerce platform users as the survey objects, 248 valid survey sample data were collected, and the method of factor analysis and structural equation model analysis was used to verify the research hypothesis model constructed in this paper. Results: The four dimensions of e-commerce logistics service quality have different influences on customer satisfaction, and the influence of availability on customer satisfaction is not significant. Convenience, assurance, and security have a significant positive impact on customer satisfaction; Customer satisfaction has a significant positive impact on the three dimensions of customer engagement behavior: customer repeat purchase behavior, online word-of-mouth, and customer referrals. Conclusion: The results of this study will provide useful reference for the managers of e-commerce companies to improve customer engagement behavior by improving the logistics service quality.