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At present, the number of App users in China is soaring, but it still faces the problem of low user stickiness. The interactive design approach of fitness App is proposed to improve the App and motive users to form the habit of permanent use of fitness App, and ultimately achieve the goal of increasing the fitness App’s stickiness. The ideal fitness App lifecycle can be divided into three stages: the initial trial stage, the habit-forming stage, and the habit-keeping stage. It is proposed that fitness App should improve user experience in three stages of the ideal lifecycle by improving interaction design at the three levels of “instinct level, behavior level and reflective level”. The specific interaction design approach at the instinct level, behavior level and reflective level are also put forward.

At present, there are numerous usability problems in the long-term rental application in Chinese market, including unreasonable interaction design problems and irregular interface design problems. The usability elements and the interaction design principles of the long-term rental application are proposed to support the usability improvement. The usability elements, namely effectiveness, efficiency, satisfaction, learnability, security, and versatility, and the interaction design principles include meeting user mental models; focusing on the analysis and design of different touchpoints; completing information searching path; reasonable information display methods. User behaviors and usage preferences are explored through focus group, non-participant observation and questionnaire survey. One long-term rental application is redesigned to follow the interaction design principle. For usability testing, the measured person uses the application before and after the improvement, counting the usability score and level to determine whether the redesign has been improved. The principle of interaction design can improve the interaction design level and achieve the goal of improving usability of the long-term rental application.

Objectives: We aimed to investigate the prevalence and pattern of cognitive dysfunction in patients with traumatic bifrontal contusions and their association with functional outcome.

Subarachnoid hemorrhage (SAH) is a subtype of stroke with disastrous outcomes of high disability and mortality. A variety of endeavors have been developed to explore a SAH animal model for investigation of the disease. Among these models, the endovascular perforation SAH model was considered to be the most simulative to the clinical human SAH because it reproduces several pathophysiology procedures and presents some of the most important post-hemorrhage features. An applicable SAH animal model should have the characteristics of low mortality rate, limited surgical manipulation, and adaptation to many species, which permits reproducibility and standardization. An intensive discussion of how to improve the techniques and refine the procedure has taken place in the last decade. This report describes our experiences with a murine model of SAH. We aim to standardize and optimize the procedures to establish a relatively stable animal model for SAH research.