Abstract-China has a long-standing problem in second-language education, that is, the lack of communicative learning opportunities. This study attempts to solve the problem by introducing mobile-assisted language learning with WeChat instant messaging. WeChat is one of the most popular instant messaging applications in China. It offers five advantages for education: multifunctionality, individuality, accessibility, interactivity, and affordability. 50 students participated in a one-semester program. They were divided into two groups. One group learned English with the assistance of mobile applications (WeChat Group), and the other learned English without assistance (Control Group). A pre-test and a post-test were given, and the scores were analyzed. The results showed that students in the WeChat group significantly improved in English proficiency. The results suggest that mobile-assisted language learning helps to create language immersion, which effectively motivates the learners further. Therefore, mobile-assisted language learning is promising in English learning for college students.

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Abstract-With the increasing use of smartphones in China, WeChat has become one of the most popular social applications. With its powerful functions, WeChat not only implements social features for its users but also provides a new way to fulfill mobile learning (M-learning), which is a form of distance education with the use of mobile devices. After analyzing M-learning models and WeChat's features, this paper attempts to integrate WeChat's interactive functions to construct a WeChat teaching platform under the guidance of constructive theory. The WeChat teaching platform was constructed based on WeChat's multiple functions and with the support of wireless network technology. It can help to increase the interaction between students and teachers, because such interaction makes achieving ubiquitous learning for university students feasible. This empirical study proved that the new model is feasible and effective in facilitating interaction in translation teaching and in developing the students' translation competence.

In this paper, a scheme for cyclic hybrid double-channel quantum communication is proposed by using the product state of three Bell states and three Greenberger-Horne-Zeilinger (GHZ) states as the quantum channel. It shows that Alice teleports a single-qubit state to Bob and prepares a single-qubit state for Charlie, Bob teleports a single-qubit state to Charlie and prepares a single-qubit state for Alice, while Charlie teleports a single-qubit state to Alice and prepares a single-qubit state for Bob. The quantum channel is constructed by using Hadamard (H) and Controlled-NOT (CNOT) operations. Participants reconstruct the desired states by performing Bell-state measurements, single-qubit measurements, and unitary transformations. Compared with existing schemes, this new scheme improves the efficiency and capacity of quantum communication because it constructs a cyclic and bidirectional quantum communication and simultaneously supports two communication protocols, quantum teleportation and remote state preparation. Only single-qubit measurements, two-qubit measurements, and basic unitary transformations are utilized in the scheme, so our operation complexity is lower than others. Thus, the scheme is likely to be implemented through physical experiments in the future. Besides this, we discuss the impact of noisy environments (amplitude-damping, phase-damping noise, bit-flip noise, and phase-flip noise) in the scheme and calculate the fidelities of the output states. It is demonstrated that the fidelities only depend on the coefficients of the initial state and the decoherence rate. INDEX TERMS Amplitude-damping noise, bell-state measurement, phase-damping noise, quantum teleportation, remote state preparation, single-qubit measurement. RI-GUI ZHOU (M'12) was born on March 2, 1973. He received the B.S. degree from Shandong University, China, in 1997, the M.S. degree from the

In this paper, we propose a novel quantum secret image-sharing scheme which constructs m quantum secret images into m+1 quantum share images. A chaotic image generated by the logistic map is utilized to assist in the construction of quantum share images first. The chaotic image and secret images are expressed as quantum image representation by using the novel enhanced quantum representation. To enhance the confidentiality, quantum secret images are scrambled into disordered images through the Arnold transform. Then the quantum share images are constructed by performing a series of quantum swap operations and quantum controlled-NOT operations. Because all quantum operations are invertible, the original quantum secret images can be reconstructed by performing a series of inverse operations. Theoretical analysis and numerical simulation proved both the security and low computational complexity of the scheme, which has outperformed its classical counterparts. It also provides quantum circuits for sharing and recovery processes.