Research On The Relationship Between The Usability Dimension And Design Elements Of Mobile Handheld Device

As the rapid development of mobile Internet, a large number of functions and requirements accumulated in the PC and Web are being ported to handheld mobile terminals. Independent APP function presents diversified trend. Cross-border functionality is becoming more common.Thus, evaluating the merits of a design becomes an important issue, and it is a long-term task to estimate the design effect before the product goes online.This subject chooses a touch-screen handheld mobile device as a research object and construct a scientific evaluation system between user experience dimension and interface design elements. The system has two practical application methods. One can help researchers and user-centered designers to find the design elements of variables which affect the user experience from the evaluation results, the other one can help designers correctly predict user experience and operational performance before product design goes live.With the method of literature review, the study decomposes the usability dimension into seven sub-dimensions: Simplicity, Directness,Efficiency, Helpfulness, User control, Learnability and Supportability. The data of 250 groups is collected by questionnaire to validate the validation.According to a large number of application summaries and design guidelines, the study extracts the a lot of user interface elements about components and attributes. An attempt was made to establish an operating time estimate relationship between the efficiency sub-dimension and the interface design elements. The HLM model of hand-held mobile device is established, and the physical operating unit index which can be applied to the handheld touch-screen device is proposed to make it more widely applicable. The experiment analysis the data of 30 groups to quantify the operating time unit respectively providing the parameters for the design prediction. The performance of the fingers can provide help and reference for designers when they choose design patterns. Localization behavior study also has predictive significance of product design for domestic users.Finally, the study validates the conclusion above taking the alarm clock of as an example. It extracts the interaction pattern and function interaction pattern of the alarm clock and collects the subjective experience and objective performance of 36 users through the concrete evaluation practice.Eye movement data was recorded as objective performance by Tobii.Meanwhile the concrete evaluation validates the effectiveness of HLM model.