摘要：The humanization design, friendly user experience shall be very important for mobile phone interface. The mobile interface design shall be such an important direction for the research of human-computer interaction techniques. The main purpose of this paper is to discuss the design principles, methods and design process for APP registration and login function. In this paper, it has expounded how to judge the APP needs registration and login functions, and then gave the brief elaboration on several commonly-used registration and login methods. Finally, it discusses how to design APP registration and login functions accordingly.

摘要：To enhance the piezoelectric performance of piezoelectric polymer thin films in general,hybrid polyvinylidene difluoride(PVDF)and nanosized barium titanate(BaTiO_(3))piezoelectric films were prepared and their piezoelectric performance *** hybrid nanofibers were fabricated via electrospinning at an external voltage of 15 *** nonwoven fabrics were collected using a roller collection device,and their morphological structures were analyzed via scanning electron *** crystal structures of these piezoelectric films were characterized via micro-Raman spectroscopy.β-phase of the composite nanofiber membrane almost increased to twice owing to the addition of BaTiO_(3)*** with pure,electrospun PVDF piezoelectric film,the piezoelectric characteristics of the hybrid piezoelectric films were considerably enhanced because of the additional BaTiO_(3)*** maximum instantaneous open-circuit voltage of the hybrid PVDF-BaTiO_(3)nanofibers film can be high up to 80 *** high-performance hybrid piezoelectric films exhibited notable prospects for applications in wearable electronic textiles.