2001—2002赛季CBA与NBA技术统计的比较与分析

对 2 0 0 1— 2 0 0 2赛季CBA与NBA各项技术进行了统计比较与分析 ,建议CBA在应有的基础上继续努力 ,提高球员的身体素质和技术能力 .     

北宋何栗（卤木）述评

论文通过何栗言行述要、宋人对何栗的议论,对何栗的功过予以评议.     

基于主动网的SYN攻击防御

针对目前传统网防御TCP同步泛滥攻击的服务器主机、路由器过滤、防火墙方法的局限性,利用主动网的动态特性,提出一种基于主动网的同步泛滥防御机制,并通过仿真实验将它与传统网环境下的防火墙防御进行了性能比较和分析,结果表明主动网技术为同步泛滥攻击提供了良好的防御性能。     

Defender–Attacker Games with Asymmetric Player Utilities

The presence of strategic attackers has become an important factor in the security and protection of systems, especially since the 9/11/2001 attacks, and considerable efforts have been dedicated to its study. When defending against the strategic attacker, many existing studies assume that the attacker would seek to minimize the defender's utility, which implies that the defender and attacker have symmetric utilities. However, the attacker's objective is determined by its own valuation of the system and target of the attack, which is not necessarily consistent with the defender's utility. If the attacker unexpectedly targets a different utility, then the defense strategy might no longer be optimal. In particular, the defense strategy could be inferior if the attacker's utility is not known to the defender. This study considers a situation where the defender's utility is the system survivability and the attacker's utility is the expected number of destroyed elements in the system. We investigate possible attack strategies under these two different utilities and compare (a) the conservative defense strategy when the attack utility is unknown to the defender with (b) the optimal defense strategy when the attack utility is known to the defender. We show that the conservative protection strategy is still optimal under asymmetric utilities when the contest intensity is smaller than one.     

新的Adhoc网络安全路由协议

针对目前Adhoc网络安全DSR协议的安全性难以保证的现状,提出并证明了能够抵御active-1-y(y≥1)攻击的安全DSR所必须满足的一个充要条件,同时设计了一种新的安全DSR协议——ESDSR,并证明该协议满足上述充要条件。分析结果表明,与现有各种安全DSR协议相比,ESDSR不仅达到了抵御active-1-y攻击的安全目标,而且具有最低的资源开销,适用于Adhoc网络环境。     

对男子后排进攻战术运用及地位的探讨

针对近年来中外男排在比赛中后排进攻的统计,就其发展的速度和效果、作用,进行了分析,对男子后排进攻在重大比赛中运用的情况,其地位如何进行了分析。当今男子排球比赛中的后排进攻运用非常广泛,并且成功率也非常高,排球比赛中的后排进攻将在今后的比赛中会不断的运用,并且会成为比赛中不可缺少的进攻。     

间谍软件攻击分析与对策研究

在最近几年,一种较新的网络攻击———间谍软件攻击广泛蔓延。尽管大多数人已经意识到了这一点,但研究人员很少努力来分析它的攻击方法以及进行对策研究。在对间谍软件攻击方法进行分析以后,提出了基于用户行为、基于主机、基于网络的三种解决方案。     

排球跳发球技术教学探微

:跳发球在技术结构上与前攻极为相似 ,均由助跑、起跳、空中击球、落地等环节组成。其教学与训练可以按照以下模式进行 :跳发球技术——前攻——后攻——多变战术组合     

The Theory of Global Games on Test: Experimental Analysis of Coordination Games with Public and Private Information

The theory of global games has shown that coordination games with multiple equilibria may have a unique equilibrium if certain parameters of the payoff function are private information instead of common knowledge. We report the results of an experiment designed to test the predictions of this theory. Comparing sessions with common and private information, we observe only small differences in behavior. For common information, subjects coordinate on threshold strategies that deviate from the global game solution towards the payoff‐dominant equilibrium. For private information, thresholds are closer to the global game solution than for common information. Variations in the payoff function affect behavior as predicted by comparative statics of the global game solution. Predictability of coordination points is about the same for both information conditions.     

空袭综合征及其预防

空袭综合征是现代战争中必然产生的心理现象,对战争胜负具有重大影响。它是一定的生理病症和心理病症的结构性反应。其预防措施主要是制订现代空防战略,建立强大的空军;加强人民防空设施;构筑强有力的军民心理防御机制等。