The notion of w-density for the graphs with positive weights on vertices and nonnegative weights on edges is introduced.A weighted graph is called w-balanced if its w-density is no less than the w-density of any subgr...The notion of w-density for the graphs with positive weights on vertices and nonnegative weights on edges is introduced.A weighted graph is called w-balanced if its w-density is no less than the w-density of any subgraph of it.In this paper,a good characterization of w-balanced weighted graphs is given.Applying this characterization,many large w-balanced weighted graphs are formed by combining smaller ones.In the case where a graph is not w-balanced,a polynomial-time algorithm to find a subgraph of maximum w-density is proposed.It is shown that the w-density theory is closely related to the study of SEW(G,w) games.展开更多
In this paper, a detailed computer-based numerical simulation centering on the export linewidth of diverse physical mechanisms of optic parametric oscillator by using a kind of new nonlinear optical crystal-CsLiB 6O ...In this paper, a detailed computer-based numerical simulation centering on the export linewidth of diverse physical mechanisms of optic parametric oscillator by using a kind of new nonlinear optical crystal-CsLiB 6O 10(CLBO) pumped by 355?nm pulse laser is presented. The results point out that the linewidth is influenced by the divergence angle and off-axis of pumping larger than that other factors do.展开更多
This paper analyzes the advantage and disadvantage of cost-plus pricing modelin pricing deposits of postal savings in the central bank and inability of the model with thederegulation of interest rates. Based on price ...This paper analyzes the advantage and disadvantage of cost-plus pricing modelin pricing deposits of postal savings in the central bank and inability of the model with thederegulation of interest rates. Based on price leadership model, this article establishes analternative method to price deposits of postal savings.展开更多
Since the beginning of the new century, all trades in China have started to introduce e commerce, and many traditional enterprises have scrambled for this newly born business. It is important and urgent for China Pos...Since the beginning of the new century, all trades in China have started to introduce e commerce, and many traditional enterprises have scrambled for this newly born business. It is important and urgent for China Post to introduce and develop e commerce. But what measures should we adopt to develop e commerce? This paper provides some practical and reasonable approaches and strategies to develop e commerce.展开更多
The environment of the postal industry in China has experienced tremendouschanges in the past few years, The environmental changes have some effects on the elements thatdecide the service structure of China Post. In s...The environment of the postal industry in China has experienced tremendouschanges in the past few years, The environmental changes have some effects on the elements thatdecide the service structure of China Post. In such context, the current service structure of ChinaPost needs some improvements to adapt itself to the changing environment. Aiming at the optimizationof the service structure of China Post, this paper reviews the law of its development and makes ananalysis of its current characteristics and the existing problems.展开更多
文摘The notion of w-density for the graphs with positive weights on vertices and nonnegative weights on edges is introduced.A weighted graph is called w-balanced if its w-density is no less than the w-density of any subgraph of it.In this paper,a good characterization of w-balanced weighted graphs is given.Applying this characterization,many large w-balanced weighted graphs are formed by combining smaller ones.In the case where a graph is not w-balanced,a polynomial-time algorithm to find a subgraph of maximum w-density is proposed.It is shown that the w-density theory is closely related to the study of SEW(G,w) games.
文摘In this paper, a detailed computer-based numerical simulation centering on the export linewidth of diverse physical mechanisms of optic parametric oscillator by using a kind of new nonlinear optical crystal-CsLiB 6O 10(CLBO) pumped by 355?nm pulse laser is presented. The results point out that the linewidth is influenced by the divergence angle and off-axis of pumping larger than that other factors do.
文摘This paper analyzes the advantage and disadvantage of cost-plus pricing modelin pricing deposits of postal savings in the central bank and inability of the model with thederegulation of interest rates. Based on price leadership model, this article establishes analternative method to price deposits of postal savings.
文摘Since the beginning of the new century, all trades in China have started to introduce e commerce, and many traditional enterprises have scrambled for this newly born business. It is important and urgent for China Post to introduce and develop e commerce. But what measures should we adopt to develop e commerce? This paper provides some practical and reasonable approaches and strategies to develop e commerce.
文摘The environment of the postal industry in China has experienced tremendouschanges in the past few years, The environmental changes have some effects on the elements thatdecide the service structure of China Post. In such context, the current service structure of ChinaPost needs some improvements to adapt itself to the changing environment. Aiming at the optimizationof the service structure of China Post, this paper reviews the law of its development and makes ananalysis of its current characteristics and the existing problems.
