Based on the energy conservation approach, this study develops a universal model to predict the maximum spreading factor of liquid droplet impact on a smooth solid surface. Validated with the present simulations and experiments in the literature, this model effectively overcomes the limitation of previous models in the viscous regime and greatly reduces the computing errors from over 30% to below 6%. It is demonstrated that the underestimated maximum spreading factor by previous models results from the overestimation of viscous dissipation. By replacing the conventional model of spreading time, t m = 8D 0 /3U 0 , with a more precise one, t m = 1.47τ i We −0.44 , the formulation to compute the viscous dissipation of entire spreading is improved. Finally, we examine the applicability of present model in the capillary regime and good performance is also shown.

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Abstract. In this paper, we describe the iterative design and evaluation of a storytelling application for individuals with expressive aphasia. Our user studies show that besides basic requirements for medical care and training, there is an unmet need of aphasics to share their daily experiences and activities, anecdotes and feelings with their significant others. Thus, the goal of the proposed design is to enhance aphasics' quality of life by providing a platform for them to create and share their stories. More specifically, the goal is to enable them to play a more active role in social exchanges by providing them with a multimodal interface for storytelling that has the following functionalities: taking photos, making drawings and annotations, and recording sounds. In the end of this paper, we also summarize important design guidelines that surfaced during the course of this project and that are potentially relevant for other designers and researchers working with aphasics.

This article describes the status of Internet development and application in China. It introduces the Chinese search engines as well as four main domestic networks connected to the Internet and analyses Internet applications in five major fields in China: e-government, e-commerce, distance education, distance medical treatment, and digital library. It also discusses China's Internet management and related issues and problems and provides an overview of Internet development in China. 2