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Public transport plays an important role in the environment. This study established a Spatial Computable General Equilibrium (SCGE) model to examine the economic and environmental effects of public transport subsidy policies. The model includes firms, consumers, and traffic modules in one framework. Statistical data from Beijing were used in calibration to obtain benchmark equilibrium. Based on the equilibrium, simulations compared citywide social welfare, jobs-housing spatial population distribution, and environmental outputs under four subsidy policies: fare subsidy, cash grants, road expansion, and public transport speedup. Based on the results regarding the effects of public transport policies, conclusions can be drawn about which policies will have greater overall social influence and should therefore be used.

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In the period of transformation, the current situation and countermeasures of our national competitive basketball capital input and earnings is that the sources of fund tend to be multi-facetted, but the right of property is not clear enough; the way of profit is various, but the amount is limited. Therefore, we should accelerate the process of our national basketball professionalism, make the most of the tangible and intangible assets of basketball, look for many other ways of financing actively, and at the same time, use the successful operation experience of NBA industry as a source of reference.

The formation of three-dimensional sandpile was simulated by using discrete element model. The influence of sliding friction and rolling friction of particles on the formation of sandpile was discussed. The simulation results show that the angle of repose of sandpile is determined by both sliding friction and rolling friction. The trec-shaped microscopic mechanical structure in the sandpile was revealed by the simulation. The stress distribution at the bottom of sandpile was also obtained by the simulation. The simulation results show that when the angle of repose of sandpile is large, normal stress profiles with a clear stress dip near the center of the pile is generally formed, and when the angle of repose of sandpile is small, the maximal normal stress generally appears near the center of the pile. Which type of the stress distribution at the bottom of sandpile will emerge is rather accidental,depending on the real process of pileing.