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Social media has become one of the most popular marketing channels for many companies, which aims at maximizing their influence by various marketing campaigns conducted from their official accounts on social networks. However, most of these marketing accounts merely focus on the contents of their tweets. Less effort has been made on understanding tweeting time, which is a major contributing factor...
The existing 3D topology control methods can not be applied to initial disconnected network topology and do not consider connectivity extension. Although extending Coop. Bridges scheme to 3D space can solve it, the induced network topology is not energy efficient. In this paper, we propose the Connectivity-enhanæd Interference-aware Energy-efficient Topology Control (CIETC) for 3D cooperative ad hoc...
Some variational principle is considered to recover the missing parts in a panchromatic digital image, and a model based on the relaxation of the energy which takes into account the perimeter of the level sets of function as well as the norm of the mean curvature along their boundaries is proposed. The variational model and the existence of minimizing functions in BV is studied.
A disaggregate logit model based on collision avoidance behavior was formulated to research on the conflict of right-turning vehicles and straight bicycles in urban interchange ramp terminals. By analyzing the mechanism of the conflict of vehicle and bicycle, this paper thought that the main conflict of vehicle and bicycle could be regarded as the behavior of collision avoidance and the behavior of...
In the current international financial crisis, investors are closely watching that how deeply China's market is affected by the financial crisis and its role in stabilizing the global financial situation. In this paper, we have tested spillover effects in financial risk between the Shanghai market and the other main stock markets. We use the kernel smoothing function to estimate the marginal density...
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