Optimization and Integration of Electric Vehicle Charging System in Coupled Transportation and Distribution Networks

With the development of the EV market, the demand for charging facilities is growing rapidly. The rapid increase in Electric Vehicle and different market factors bring challenges to the prediction of the penetration rate of EV number. The estimates of the uptake rate of EVs for light passenger use vary widely with some scenarios gradual and others aggressive. And there have been many effects on EV penetration rate from incentives, tax breaks, and market price. Given this background, this research is devoted to addressing a stochastic joint planning framework for both EV charging system and distribution network where the EV behaviours in both transportation network and electrical system are considered. And the planning issue is formulated as a multi-objective model with both the capital investment cost and service convenience optimized. The optimal planning of EV charging system in the urban area is the target geographical planning area in this work where the service radius and driving distance is relatively limited. The mathematical modelling of EV driving and charging behaviour in the urban area is developed

Fashion Meets Twitter: Does the Source Matter? Perceived Message Credibility, Interactivity and Purchase Intention

Through an online survey, this study explored the perceived source credibility of fashion industry Twitter messages with varying message sources (the brand itself, celebrity endorser, friend/acquaintance). Online interactivity and purchase intention of potential customers were also assessed to examine if a particular message source and its credibility increase the likelihood of online engagement with the message and customers\u27 intention to purchase.;Findings indicate that of all source types, brands were perceived as most credible overall, as well as on dimensions of expertise, character, and attractiveness. Furthermore, there was a higher probability of respondents searching for additional information based on a tweet from a brand. In terms of purchase based on Twitter messages, respondents were most motivated based on the affordability, value and the ability of the fashion item to compliment their personal style. Conversely, celebrity endorsers scored lowest in every variable, including credibility, interactivity and purchase intention, which might provide some insight into social media celebrity endorsement for fashion brands and designers.;These findings highlight the value of source selection in Twitter messaging for the fashion industry, as well as the content of the messages posted in this forum. Optimization and leveraging of messages based on these findings should lead to better return on investment as measured by online engagement and purchase intention

Recovering Multiplexing Loss Through Successive Relaying Using Repetition Coding

In this paper, a transmission protocol is studied for a two relay wireless network in which simple repetition coding is applied at the relays. Information-theoretic achievable rates for this transmission scheme are given, and a space-time V-BLAST signalling and detection method that can approach them is developed. It is shown through the diversity multiplexing tradeoff analysis that this transmission scheme can recover the multiplexing loss of the half-duplex relay network, while retaining some diversity gain. This scheme is also compared with conventional transmission protocols that exploit only the diversity of the network at the cost of a multiplexing loss. It is shown that the new transmission protocol offers significant performance advantages over conventional protocols, especially when the interference between the two relays is sufficiently strong.Comment: To appear in the IEEE Transactions on Wireless Communication

Finite-size analysis of continuous-variable measurement-device-independent quantum key distribution

We study the impact of the finite-size effect on the continuous-variable measurement-device-independent quantum key distribution (CV-MDI QKD) protocol, mainly considering the finite-size effect on the parameter estimation procedure. The central-limit theorem and maximum likelihood estimation theorem are used to estimate the parameters. We also analyze the relationship between the number of exchanged signals and the optimal modulation variance in the protocol. It is proved that when Charlie's position is close to Bob, the CV-MDI QKD protocol has the farthest transmission distance in the finite-size scenario. Finally, we discuss the impact of finite-size effects related to the practical detection in the CV-MDI QKD protocol. The overall results indicate that the finite-size effect has a great influence on the secret key rate of the CV-MDI QKD protocol and should not be ignored.Comment: 9 pages, 9 figure

Analysis of Changes in Comparative Advantages of the Manufacturing in Vietnam and Comparison with China

With the process of Vietnam's reform and opening up, Vietnam's economy has made remarkable achievements. Vietnam's manufacturing industry, taking advantage of the new liberal policies, has also achieved rapid development. Sufficient and cheap labor force, advantageous geographical location, preferential foreign investment policies, and friendly international trade environment with the technological upgrading of manufacturing industry are all the advantages of Vietnam in attracting manufacturing industry. However, there are structural difficulties in the Vietnam's economy. Vietnam's economy is highly dependent on foreign trade and foreign investment, and its trade commodities are mainly assembly and processing with low added value. Compared with China, Vietnam also has obvious disadvantages in the scale of domestic market and supply chain. To some extent, Vietnam's manufacturing industry is integrated into China's supply chain network