Cai D.,Anhui Xinhua University
Carpathian Journal of Food Science and Technology | Year: 2015
Vegetable price is not only the main motivation for unchoking vegetable circulation channel, but also the powerful lever for regulating the benefits of producer and consumer and processing the relationship among country, collective and individual. Unreasonable price of vegetable can affect the normal consumption and life of resident to a large extent as well as the income of farmer. Taking short-term fluctuation of vegetable price in our country as entry point, this paper analyzed the economic influence factors. Factor analysis method and vector auto-regression (VAR) model method was applied to make an empirical analysis on the influence factor of vegetable price fluctuation and proposed the suggestions for stabling the vegetable price fluctuation in our country accordingly. It is concluded that, production cost, issuance of paper money, hot money, and climate are all the main reasons for the short-term fluctuation of vegetable market price.
Zhou J.,Anhui Xinhua University |
Zhou J.,South China Normal University |
Yu W.-C.,South China Normal University |
Gao Y.-M.,University of Electronic Science and Technology of China |
Xue Z.-Y.,South China Normal University
Optics Express | Year: 2015
A cavity QED implementation of the non-adiabatic holonomic quantum computation in decoherence-free subspaces is proposed with nitrogen-vacancy centers coupled commonly to the whispering-gallery mode of a microsphere cavity, where a universal set of quantum gates can be realized on the qubits. In our implementation, with the assistant of the appropriate driving fields, the quantum evolution is insensitive to the cavity field state, which is only virtually excited. The implemented non-adiabatic holonomies, utilizing optical transitions in the Λ type of three-level configuration of the nitrogen-vacancy centers, can be used to construct a universal set of quantum gates on the encoded logical qubits. Therefore, our scheme opens up the possibility of realizing universal holonomic quantum computation with cavity assisted interaction on solid-state spins characterized by long coherence times. © 2015 Optical Society of America.
Zhang W.,Anhui University |
Rui P.,Anhui Xinhua University |
Zhang Z.,Anhui University |
Yang Q.,Anhui University
New Journal of Physics | Year: 2014
By using quantum nondemolition detectors (QNDs) based on weak cross-Kerr nonlinearities, we propose an experimental scheme for achieving 1 →2 probabilistic quantum cloning (PQC) of a single-photon state, secretly choosing from a two-state set. In our scheme, after a QND is performed on the to-be-cloned photon and the assistant photon, a single-photon projection measurement is performed by a polarization beam splitter (PBS) and two single-photon trigger detectors (SPTDs). The measurement is to judge whether the PQC should be continued. If the cloning fails, a cutoff is carried out and some operations are omitted. This makes our scheme economical. If the PQC is continued according to the measurement result, two more QNDs and some unitary operations are performed on the to-be-cloned photon and the cloning photon to achieve the PQC in a nearly deterministic way. Our experimental scheme for PQC is feasible for future technology. Furthermore, the quantum logic network of our PQC scheme is presented. In comparison with similar networks, our PQC network is simpler and more economical.
Liu D.,Anhui Xinhua University
Guangxue Jishu/Optical Technique | Year: 2016
Based on the reflection of symmetric multi-layer thin-film, a periodic multilayer photonic crystal waveguide with a working wavelength at near 1550 mm is designed. The transmission characteristics of electromagnetic wave with the wavelength between 1515~1587 nm is analyzed according to the related theory of planar optical waveguide. The results show that only the fundamental mode (TE0 and TM0) can be transmitted and the power constraint factor (Γ) is limited between in 0.99~1, which proves that the transmission of light wave is almost completely limited within it and shows that the light control capacity of the structure is apparently greater advantage than ordinary three-layer thin-film waveguide. The omnidirectional band-gap optical waveguide can be constructed with a periodic multilayer band-gap structure. © 2016, Editorial Board of Optical Technique. All right reserved.
Xu N.-R.,Anhui University of Finance and Economics |
Liu J.-B.,Anhui Xinhua University
Mathematical Problems in Engineering | Year: 2015
The paper tries to add the network structure factors of agile supply chain network into agility evaluation. The paper firstly presents three concepts including node strength centrality, betweenness centrality, and network centrality. They are used to calculate the weight of node enterprises in the agile supply chain network. And then, a series of agility indicators are designed to evaluate agility of agile supply chain network. AHP is used to calculate the weight of the indicators. Next, these indicators are used to get initial agility evaluation matrix by means of Delphi method, Data Mining, and so forth. Then FCE is used to calculate the membership degree on agility of node enterprises by combining the evaluation matrix with the weight of indicators. Last, the evaluation result of comprehensive agility of agile supply chain network is calculated on the basis of considering the weight of node enterprises. This method can reflect the effect which the network structure of supply chain network makes on the agility of the supply chain network. It is a complement to the current evaluation methods of agility. © 2015 Nai-Ru Xu and Jia-Bao Liu.