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6. The Design of File Management System Based on Website and Qr

Author

Su Xiaoli, Wu Yuhang, Zhang Li, Wang Xiang, and Huang Kaiwen

Subjects
World Wide Web, File management, business.industry, Computer science, ASP.NET, Web page, Cabinet (file format), Icon design, computer.file_format, business, Automation, computer, computer.programming_language
Abstract

The file management of universities has always been a headache nowadays. At present, universities have a variety of public and personal documents or files to manage. The management method still maintains manual physical management, which is time-consuming and laborious, and may even cause serious problems such as "lost file". In order to manage files in a more standardized and efficient way, this design which involves a webpage connected with automation control access system optimizes the archive management of various files. The operation with its linking function allows teachers to preview and edit the retrievable items and the website administer to manage the accounts. The application of webpage can avoid problems such as cumbersome installations and running environment of APPs in mobile phones, and achieves the function of mobile terminals with Quick Look and Quick View, making the files stored at the fixed point and accessible at any time. For the front-end part of the webpage, it draws on a lot of excellent foreign website designs, and applies a flatter icon design and a more fluid transition effect. Connected with the widely-used ASP.Net backend framework, the filing cabinet enjoys a more comfortable and smooth operation experience in addition to its function of efficient filing. Furthermore, it gives the chance to teachers and students to experience the charm of TUTE on the homepage and to get an overview of the university's profile and the latest news. This design is a combination of practicality and aesthetics.

Published
2019

8. Effect of β-crystals on the mechanical and electrica properties of β-nucleated isotactic polypropylene.

Author

Zhang, Wei, Xu, Man, Huang, Kaiwen, Mu, Qiulin, and Chen, George

Subjects
POLYPROPYLENE, IMPACT strength, ELECTRIC breakdown, SPACE charge, THERMALLY stimulated currents, THERMOPLASTIC composites
Abstract

Polypropylene has great potential as a thermoplastic insulation material for high voltage direct current (HVDC) cable. However, its mechanical properties restrict its application, particularly at low temperature. In this paper, isotactic polypropylene (iPP) with the β-nucleating agent WBG was prepared by the melt blending method. The crystallinity, β-crystal proportion and crystalline morphology were analyzed by wide-angle X-ray diffraction, differential scanning calorimetry, scanning electron microscopy and polarized optical microscopy. The results showed that the crystallinity and β-crystal proportion increased as the WBG concentration increased. Three types of β-crystal morphology, namely β-spherulite, flower-like agglomerate and β-quasi-spherulite, were sequentially obtained with increasing WBG concentration. The mechanical properties, space charge distribution, thermally stimulated discharge current and DC electrical breakdown strength were investigated. Compared with pure iPP, the Izod impact strength and DC breakdown strength of iPP/0.1%WBG were improved by 238 and 16%, respectively, and the fracture energy and brittleness temperature of iPP/0.3%WBG were improved by 420 and 80%, respectively. In addition, the space charge accumulation was suppressed in the range of 0.1–0.5 wt% WBG. Chain coupling between the β-crystals and the amorphous phase, particularly in the flower-like agglomerates, was considered to play an important role in improving the mechanical and electrical performance. [ABSTRACT FROM AUTHOR]

Published
2019
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