72241 Unit

Jinan, China

72241 Unit

Jinan, China
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Sheng P.,72241 Unit | He Z.,72241 Unit
Proceedings - 2nd IEEE International Conference on Advanced Computer Control, ICACC 2010 | Year: 2010

The shader in the GPU are widely used to model coastal terrain, but the created terrain are of great similarity and unable to embody the differences of coastal features. To overcome the above disadvantage, we present a new modeling method for created terrain based on sketch map. Through specifying the coastal features type, the proposed modeling method can create according coastal terrain easily. In order to produce realistic looking scenes, we propose a method to implement the reflection and refraction effect of water in the GPU's shader. The method can easily control the coastal effect. Experiments show that the result graphs are true to nature. © 2010 IEEE.


Song Y.,Tsinghua University | Zhong Q.,72241 Unit
Proceedings of the IEEE International Conference on Software Engineering and Service Sciences, ICSESS | Year: 2013

In order to solve the problem that the existing wireless resource allocation strategies only concern a single wireless base station rather than the entire network, this paper proposed a two-stage wireless networking resource allocation algorithm. Firstly, the base station is selected according to the congestion degree, and then a marginal utility based approach is used to allocate the resource inside each base station. Experimental results show that our proposed algorithm can achieve the optimal utility in high speed: only 0.04 seconds in average, which are only 0.0019% of the state-of-the-art algorithm. © 2013 IEEE.


Song Y.-N.,Tsinghua University | Song Y.-N.,72241 Unit | Zhong Q.,72241 Unit | Hu C.-C.,Xi'an University of Science and Technology | Liu B.,Tsinghua University
Tien Tzu Hsueh Pao/Acta Electronica Sinica | Year: 2012

Due to the shortcoming of coarse partitioning granularity, utility-based single layer scheduling model fails to achieve good fairness among services and to maximize the whole utility. A two-layer hierarchical scheduling model named U-S as well as the corresponding algorithm USMS to solve the model is proposed. In order to improve the accuracy of the solution, we further design an improved algorithm named USIM. The evaluation experiments show that both USMS and USIM can achieve high solving effectiveness and efficiency and also have higher average whole utility than the single-layer model.


Song Y.-N.,Tsinghua University | Song Y.-N.,72241 Unit | Zhong Q.,72241 Unit | Liu B.,Tsinghua University
Tien Tzu Hsueh Pao/Acta Electronica Sinica | Year: 2013

For the poor scalability, effectiveness and efficiency of the up-to-date utility based scheduling solutions, in this paper, we proposed a marginal utility function based scheduling method. In accordance with the feature of the marginal utility functions, the networking applications were divided into two classes, e.g. elastic and inelastic class. And then we built a utility based network resource scheduling model with the utility functions obtained from the corresponding marginal utility functions. The simulation experiments show that compare to the latest similar method and the corresponding approach in Lingo9.0, our algorithm increased the total utility by average of 5 and 4 percent with only 0.2% and 0.003% in the elapsed time.

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