Výsledky vyhledávání

Akademický článek

Capturing the Characteristics of Car-Sharing Users: Data-Driven Analysis and Prediction Based on Classification

Autor: Jun Bi, Ru Zhi, Dong-Fan Xie, Xiao-Mei Zhao, Jun Zhang

Publikováno v: Journal of Advanced Transportation, Vol 2020 (2020)

This work explores the characteristics of the usage behaviour of station-based car-sharing users based on the actual operation data from a car-sharing company in Gansu, China. We analyse the characteristics of the users’ demands, such as usage freq

Externí odkaz: https://doaj.org/article/2b1d6fca8f7c43a88415047cfca65577

Zobrazit plný text záznamu

Plný text ve formátu HTML

Report

Higher-order exceptional points in loss-free waveguide arrays with negative-index materials

Autor: Zhang, Xin-Zhe, Wu, Li-Ting, Luo, Ru-Zhi, Chen, Jing

Negative-index materials (NIMs) are shown to support optical anti-parity-time (anti-PT) symmetry even when they are lossless. Here we prove the feasibility in achieving higher-order exceptional points (EPs) in loss-free waveguide arrays by utilizing

Externí odkaz: http://arxiv.org/abs/2304.07289

Zobrazit plný text záznamu

Report

Non-Hermitian guided modes and exceptional points using loss-free negative-index materials

Autor: Wu, Li-Ting, Zhang, Xin-Zhe, Luo, Ru-Zhi, Chen, Jing

We analyze the guided modes in coupled waveguides made of negative-index materials without gain or loss. We show that it supports non-Hermitian phenomenon on the existence of guided mode versus geometric parameters of the structure. The non-Hermitian

Externí odkaz: http://arxiv.org/abs/2303.15668

Zobrazit plný text záznamu

Report

Revisit the Poynting vector in PT-symmetric coupled waveguides

Autor: Zhang, Xin-Zhe, Luo, Ru-Zhi, Chen, Jing

We show that the time-averaged Poynting vector in parity-time (PT ) symmetric coupled waveguides is always positive and cannot explain the stopped light at exceptional points (EPs). In order to solve this paradox, we must accept the fact that the fie

Externí odkaz: http://arxiv.org/abs/2210.00273

Zobrazit plný text záznamu