Nickel Sulfide Nanocrystals Decorated Graphene Sheetsas Anode Materials for Lithium Ion Batteries

Xianggang Guan, Xuehua Liu, Hongliang Li, XiuSong Zhao

Abstract: Ni₃S₂ nanocrystals decorated reduce graphene oxide (RGO) sheets (Ni₃S₂/RGO) has been obtained through a Reaction under Autogenic Pressure at Elevated Temperature (RAPET). In comparison with pristine Ni3S2 material, his Ni₃S₂/RGO composite showed a high reversible capacities and excellent rate performance due to the integration of Ni₃S₂ nanocrystals with the high-conductivity graphene sheets and the synergistic effect between them.

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Based on the combination of opticalcommunication

Dong Ji,Yujie Chen,YingJie Guo,JiaJun Yang

Abstract: Alongwith the advance of economiclevel and the rapid development of science and technology, whether the performance of the locks is merits or not has aroused wide concern in the public, and has higher requirement for locks’secrecy. Locks mostly make from the metal locks in our life. However, it’s design form and the way of realizing function are a little single, and has a lot of safe hidden trouble. Designis coded locks of visible light communication, the principle of the way to work, which combines the sensor’s light color and an array of permutation and combination. Choosing the controller is“AT89C51”which is the smallest system possesses reset and address latched function. Theelectromagnetism is madefor locks in the design. Color sensor uses the “TCS3200”to deal with information. Sensor according to the color change of the outside world, in the digital signal is sent to the single-chip microcomputer, data comparison, and relay control, to control the on-off of the electromagnetic lock. My design has a very high worth to popularize and apply.

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Practical Teaching Reform of Network Information Security Courses Based on Virtual Experimental Environment

Xiaoxing Ma

Abstract: Experimental teaching is an important part in the teaching of computer majors, and it is a key way to cultivate students' ability to practice and solve practical problems. Due to the complexity and destructiveness of Network Information Security experiments, high requirements are placed on the experimental teaching environment. At present, laboratories in schools are unable to meet the demand of this kind of experiment.Aiming at the problems existing in the practical environment of Network Information Security course in colleges and universities, a solution based on virtualization technology to construct experimental environment is put forward.Through the virtualization of the experimental environment and breaking through the limitations of traditional laboratories, students cannot be able to restricted by time, space and traditional teaching models.Promote the experiment teaching of Network Information Security technology course, not only improve students' practical ability, but also economize the school funding on investment of equipment, investment of space, maintenance and management.

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Research on the Lane Line Detection Method Based on Image Processing

Junhao Jiang, Luhao Fang, Songsong Sun, Yanxiang Wang, Zexi Yu, Peijiang Chen

Abstract: With the development of intelligent driving technology, the performance of lane departure warning system is constantly improving. As the base of lane departure warning system, lane line detection is of great importance. In general, lane lines can be divided into straight lines and curved lines. Compared with the straight lane line, the detection of curved line is more difficult with less method. But as the machine vision and the progress of image processing technology of computer, the method of lane line detection is constantly increasing and updating. MATLAB is one of the primary software aiming to the development of computer vision system and image processing with internal image processing toolbox which provides effective functions to accelerate the procedure of lane line detection. Based on the image processing toolbox of MATLAB software, this paper uses the threshold segmentation, morphological processing and least square method to realize the detection and extraction of curved lane lines.

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A first-principles study of the mechanism for the ionic liquids-exfoliation of black phosphorus

Wenbo Huai, Aiping Fu, Hao Li, Fengna Guo, Yue Yu, Zonghua Wang

Abstract: Ionic liquids (ILs) play an important role in the exfoliation of two-dimensional(2D) materials. In this study, first-principles calculations have been performed to investigate the mechanism for the dispersion of black phosphorus (BP) by imidazolium-based ILs. The adsorption parameters of different ILs on single-layer phosphorene, such as the magnitude of the interaction energy and charge transfer between phosphorene and ILs, were used to analyze the efficiency of ILs in the BP- exfoliation process. The adsorption energies (ranging from -0.670 eV to -1.299 eV) and the charge transfer number (ranging from −0.003e to −0.110e) demonstrate that the physisorption of the ILs on the BP, and the obtained phosphorene through ILs-exfoliation of BP can maintain its electronic properties because the weak van der Waals interaction dominates between the ILs and surface.

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