It is well established that Nash equilibrium exists within the framework of mixed strategies in strategic-form non-cooperative games. However, finding the Nash equilibrium generally belongs to the class of problems kn...It is well established that Nash equilibrium exists within the framework of mixed strategies in strategic-form non-cooperative games. However, finding the Nash equilibrium generally belongs to the class of problems known as PPAD (Polynomial Parity Argument on Directed graphs), for which no polynomial-time solution methods are known, even for two-player games. This paper demonstrates that in fixed-sum two-player games (including zero-sum games), the Nash equilibrium forms a convex set, and has a unique expected payoff. Furthermore, these equilibria are Pareto optimal. Additionally, it is shown that the Nash equilibrium of fixed-sum two-player games can theoretically be found in polynomial time using the principal-dual interior point method, a solution method of linear programming.展开更多
The novel Ready Player One shows Ernest Cline’s ability of space construction,and demonstrates charm and artistic value of the virtual fantasy space it depicts.It is a science fiction with perfect combination of ideo...The novel Ready Player One shows Ernest Cline’s ability of space construction,and demonstrates charm and artistic value of the virtual fantasy space it depicts.It is a science fiction with perfect combination of ideological content and artistic form.This thesis aims to discuss the Ernest Cline’s construction of the virtual pace and the real space in Ready Player One and the function of their construction.In real space,the environment is awful and dilapidated,and people’s lives are depressed.While in the virtual space,the world is colorful and people have varied ways of entertainment to fulfill their mind.This Thesis summarizes the effects brought by both the real space and virtual space for Ready Player One.With such a strong contrast,the conflict between the two spaces promotes the narrative process and also highlights the theme of the novel.展开更多
检索足球运动员力量与其它身体素质结合训练的相关文献,整合并评述结合训练的研究进展。在Web of science、PubMed、中国知网数据库检索2000———2023年发表的相关文献,依照排除和纳入标准最终得到文献36篇,其中力量结合耐力、协调、...检索足球运动员力量与其它身体素质结合训练的相关文献,整合并评述结合训练的研究进展。在Web of science、PubMed、中国知网数据库检索2000———2023年发表的相关文献,依照排除和纳入标准最终得到文献36篇,其中力量结合耐力、协调、速度、灵敏的文献分别为12、5、11、8篇。研究结果显示:①在力量与耐力结合训练方面,任意负荷强度均能提升非高水平运动员的力量和心肺功能,而精英运动员则需要次极限强度的刺激才能提升其专项力量、冲刺速度、灵敏性及有氧耐力,且课内训练内容的顺序效益相近;②在力量与协调结合训练方面,先进行动态或静态协调训练可为随后的高质量力量训练奠定基础,训练安排选用板块分期模式更为有效;③在力量与速度结合训练方面,超等长与速度相结合的日间交替安排有助于提高冲刺及跳跃能力,而课内交替练习对提升跳跃、冲刺和变向能力等专项力量和速度的效果良好;④在力量与灵敏结合训练方面,日常技战术训练中采用力量与灵敏的课内交替,可以提高其跳跃、冲刺、转向及平衡能力。综上所述,可以从阶段、周、课3个层次建构足球运动员多素质相结合的训练组织与安排。展开更多
文摘It is well established that Nash equilibrium exists within the framework of mixed strategies in strategic-form non-cooperative games. However, finding the Nash equilibrium generally belongs to the class of problems known as PPAD (Polynomial Parity Argument on Directed graphs), for which no polynomial-time solution methods are known, even for two-player games. This paper demonstrates that in fixed-sum two-player games (including zero-sum games), the Nash equilibrium forms a convex set, and has a unique expected payoff. Furthermore, these equilibria are Pareto optimal. Additionally, it is shown that the Nash equilibrium of fixed-sum two-player games can theoretically be found in polynomial time using the principal-dual interior point method, a solution method of linear programming.
文摘The novel Ready Player One shows Ernest Cline’s ability of space construction,and demonstrates charm and artistic value of the virtual fantasy space it depicts.It is a science fiction with perfect combination of ideological content and artistic form.This thesis aims to discuss the Ernest Cline’s construction of the virtual pace and the real space in Ready Player One and the function of their construction.In real space,the environment is awful and dilapidated,and people’s lives are depressed.While in the virtual space,the world is colorful and people have varied ways of entertainment to fulfill their mind.This Thesis summarizes the effects brought by both the real space and virtual space for Ready Player One.With such a strong contrast,the conflict between the two spaces promotes the narrative process and also highlights the theme of the novel.
文摘检索足球运动员力量与其它身体素质结合训练的相关文献,整合并评述结合训练的研究进展。在Web of science、PubMed、中国知网数据库检索2000———2023年发表的相关文献,依照排除和纳入标准最终得到文献36篇,其中力量结合耐力、协调、速度、灵敏的文献分别为12、5、11、8篇。研究结果显示:①在力量与耐力结合训练方面,任意负荷强度均能提升非高水平运动员的力量和心肺功能,而精英运动员则需要次极限强度的刺激才能提升其专项力量、冲刺速度、灵敏性及有氧耐力,且课内训练内容的顺序效益相近;②在力量与协调结合训练方面,先进行动态或静态协调训练可为随后的高质量力量训练奠定基础,训练安排选用板块分期模式更为有效;③在力量与速度结合训练方面,超等长与速度相结合的日间交替安排有助于提高冲刺及跳跃能力,而课内交替练习对提升跳跃、冲刺和变向能力等专项力量和速度的效果良好;④在力量与灵敏结合训练方面,日常技战术训练中采用力量与灵敏的课内交替,可以提高其跳跃、冲刺、转向及平衡能力。综上所述,可以从阶段、周、课3个层次建构足球运动员多素质相结合的训练组织与安排。
