针对P 2 P系统中普遍存在的搭便车和公共悲剧问题，提出了一种基于博弈论的P 2 P服务质量激励机制。
According to the universal questions like free riding and tragedy of common in the P2P systems, propose incentive mechanism of P2P service quality based on the game theory.
我希望与美国人民一道在默哀过程中自省，并向在Tucson和Arizona两地公共悲剧中的无辜死难者致敬，包括那些仍为改善自身境况而奋斗的人民。
"I call on Americans to observe a moment of silence to honor the innocent victims of the senseless tragedy in Tucson, Arizona, including those still fighting for their lives," Mr.
哈萨克斯坦银行和乌克兰公共财政的悲剧就与那些管理完善，已经加入欧盟的富裕的小国没有什么关系。
The woes of Kazakh banks or of Ukraine’s public finances have little to do with the countries, mainly smaller, richer and better governed, that are already in the EU.
对于即将面临的公共开支削减，黑斯廷斯悲剧地显得不堪一击。
Unfortunately, it is acutely vulnerable to the forthcoming spending squeeze.
本文首先通过“公共牧地的悲剧”引出话题：应对公益加强保护。
Firstly, through the "tragedy of the public rangelands," lead to Topic: Responding to strengthen the protection of public welfare.
今后要减少这一公共卫生悲剧的产生，就需须要改良协作和调和工作，以便各方努力的影响最大化。
Future efforts aimed at reducing this public health dilemma will require improved collaboration and coordination to maximize the impact of the efforts of all parties.
依据博弈论中的“公共地悲剧”模型，分析了城市交通拥挤产生的经济根源，并利用获得的博弈结论，从供给和需求两个角度，给出了缓解城市交通拥挤问题的对策。
Therefore, in the paper, using the model of the tragedy of commons of the game theory, the economic origin of the urban traffic jam is analyzed.
即它在解决“公共事务的悲剧”的同时又可能产生新的“悲剧”：即限制竞争、导致资源的不公平分配等问题。
When it settles the "public affairs tragedies", new "tragedies" may occur. For instance, the problem of limiting competition, and causing unfair distribution of resources.
即它在解决“公共事务的悲剧”的同时又可能产生新的“悲剧”：即限制竞争、导致资源的不公平分配等问题。
When it settles the "public affairs tragedies", new "tragedies" may occur. For instance, the problem of limiting competition, and causing unfair distribution of resources.
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