Error analysis in correlation computation of single particle reconstruction technique

The single particle reconstruction technique has become particularly important in the structure analysis of hiomaeromolecules. The problem of reconstructing a picture from identical samples polluted by colored noises is studied, and the alignment error in the correlation computation of single particle reconstruction technique is analyzed systematically. The concept of systematic error is introduced, and the explicit form of the systematic error is given under the weak noise approximation. The influence of the systematic error on the reconstructed picture is discussed also, and an analytical formula for correcting the distortion in the picture reconstruction is obtained.     

Dynamic damping property of magnetorheological elastomer

Magnetorheological elastomer(MRE) is a new kind of smart materials,its dynamic mechanic performances can be controlled by an applied magnetic field.MRE is usually used as a stiffness-changeable spring in the semi-active vibration absorber.In order to get perfect vibration control effect,low dynamic damping of MRE is need.But the dynamic damping of MRE was not studied deeply in the past.The dynamic damping of MRE was studied and analyzed.The influences of different test conditions including test strain amplitude,test frequency and test magnetic field were deeply studied.MRE sample and pure silicone rubber sample were prepared and tested under different conditions.The test results show that the main source of dynamic damping is the friction between iron particles and rubber matrix.And the friction is mainly influenced by the strain amplitude and test magnetic field.     

Markov Model for Packet Scheduling in the Transmission of Streaming Media

The difficulties in the transmission of streaming media are analyzed, the packet scheduling on the streaming media server is studied. A Markov model is proposed under the effect of the complex dependency among the streaming media packets and the parameters of the transmission channel. On the basis of the Markov model,a policy is made to queue the streaming media packets in the sending buffer by using the iteration method, which can optimize the playback quality under the lack of the channel bandwidth.     

Fragmentation Analyses of Granular Explosive Under Drop Weight Impact

Fragmental size and distribution of explosive particles play a more important role in the formation of hot-spot than original particles size under drop weight impact. Because the particles breakage and the hot-spots ignition will form in a sequence between fragments and between the fragments and the drop weight surface under the impact. In this paper, the size and distribution of the cyclotetramethylenete tranitramine(HMX) fragments were analyzed by the Laser Particle Size Analyzer Malvern MS2000. The post-analysis results of fragments showed that size distribution of fragments was strongly dependent on drop height. An empirical formula is established to describe the relationship between the average size and drop height. The volume-based probability distribution of explosive fragments was also studied by experiments and theoretical calculations.     

Method of distribution and cooperation for electro-optical countermeasures jamming resources

The concept of the method resource is introduced to deal with the cooperative application problem of different electro-optical countermeasure equipments. Based on this concept, a new approach is introduced to distribute the jamming resources of electro-optical countermeasures, and it is used to deploy and manage electro-optical countermeasures resources under the restriction conditions of cooperation and incompatibility disposing. The resource management procedure is formalized by Finite State Machine (FSM). By using the cooperative resource operation system on the basis of multi-agent systems, a complex system with three incompatible swarms is constructed and cooperative operation procedures are demonstrated by simulations.     

Numerical simulation of mean interference effects for the interfering buildings with different heights

The mean wind-induced interference effects between two high-rise buildings, in which the interfering buildings have different heights, were numerical simulated in the terrain roughness of B and D types by the Reynolds stress equation model（RSM） of fluent. The results are in good agreement with those of the wind tunnel test. Influences of the relative arrangement of two buildings, the height of the interfering buildings and the terrain roughness upon the mean interference effects were analyzed, and the space distributions of IFcp^s on the principal building under tandem arrangement were studied. The results indicate that the lower interfering buildings can always bring larger interference factors comparing to the higher ones under tandem arrangement except that the height is larger than 1.25h, and the heights＇influence on the mean interference effects will increase as the reduced spacing of two buildings. The influence of heights will be little under stagger arrangement.     

Deformation and Failure of Polymer Bonded Explosives

The deformation and failure of pressed polymer bonded explosives under different types of loads including tension, compression and low velocity impact are presented. Brazilian test is used to study the tensile properties. The microstructure of polymer bonded explosives and its evolution are studied by use of scanning electronic microscopy and polarized light microscopy. Polishing techniques have been developed to prepare samples for microscopic examination. The failure mechanisms of polymer bonded explosives under different loads are analyzed. The results show that interfacial debonding is the predominant failure mode in quasi-static tension, while extensive crystal fractures are induced in compression. With the increase of strain rate, more crystal fractures occur. Low velocity impact also induces extensive crystal fractures.     

Influence of variables on the system of real-time measurement of temperature field with ICCD as sensor

The influence of all variables, such as materials of a measured object, condition of its surface, distance, and shut off time in the measurement of temperature field by colorimetric method with ICCD as sensor, is analyzed theoretically and studied by experiments. The obtained results prove the feasibility and reliability of the developed method.     

Performance analysis of amplify-and-forward cooperative diversity with multiple-antenna nodes via analog network coding

Network coding (NC), which works in the network layer, is an effective technology to improve the network throughput, by allowing the relay to encode the information from different users and ensuring the destination to retrieve the desired information. Employing network coding technique in a cooperative network can improve the network performance further. In this paper, we introduce analog network coding (ANC) to a simple two-user cooperative diversity network, which adopts amplify-and-forward (AF) mode and all nodes use multiple antennas. The impact of the number of antenna on the system achievable rate is investigated. And the bit error rate (BER) performances of the traditional relay cooperative network and the cooperative network based on analog network coding under different propagation conditions are discussed. The simulation results show that the performance of the traditional cooperative network has improved significantly due to the employ of network coding.     

Properties of leakage corrosion of concrete and its durability

The properties and mechanism of concrete under water leakage corrosion were studied in terms of the dissolution of calcium oxide and silicon oxide from concrete and the variation of pH value of permeate water.The experimental results show that the amount of calcium oxide and silicon oxide dissolved from per cubic meter of concrete gradually decrease with penetration time and ultimately stabilize at a certain value.The pH value of permeate water descend along with penetration time.The durability of concrete under leakage corrosion was analyzed by a formula fitted on the dissolved amount of calcium oxide.     

工程项目谈判行为的动态演化分析

运用KMRW声誉模型分析了工程项目谈判过程中各参与方的相互博弈行为.通过建立总承包商和业主谈判的模仿者动态模型,分析了工程项目谈判系统动态演化的两种演化稳定策略:信任与猜疑.识别出贴现因子、信任产生的超额收益、采用信任策略时各参与方的初始投入是影响工程项目谈判系统演化的3个主要因素.通过分析3个因素对工程项目谈判系统演化趋势的影响,得出工程项目谈判各方采用信任策略是保证工程项目谈判系统向合作方向演化及其稳定性的基础。     

横向双寡头R＆D合作与差异化产品产量竞争

结成技术联盟,开展研发合作,是提高企业竞争力的重要手段。通过引入具有产品差异化的Court模型扩展经典AJ模型,构建具有差异化产品的双寡头企业两阶段动态博弈模型,将解析结果与数值计算相结合,分析了完全不合作、半合作、全合作和社会福利最大化四种状态下产品差异化程度、研发溢出水平对均衡研发水平和产量水平的影响规律,对比分析了四种状态下的均衡结果及其差距影响因素,全面揭示了具有差异化产品的双寡头企业R＆D合作机制。     

Study on Game Theory of Social Law Enforcement

Based on the basis of the two-stage dynamic game of complete information and purely tactful perfect equilibrium theory, the non-cooperative gaming between the police department and the criminals is analyzed. Dy-namic game can be proved to forecast and explain potential tactful choices of the police department and the crimi-nals at various stages, so as to analyze the essence of the law enforcement by the theoretical models.     

认知无线电网络中基于演化博弈的协作频谱感知技术

 提出了一种基于演化博弈理论的认知网络协作频谱感知方法．对协作频谱感知中次级用户的传输时间和吞吐量进行分析,建立协作感知的博弈模型并研究其动态演化特性,基于次级用户吞吐量最大化准则,得到相应纳什均衡解,在此基础上提出一种次级用户自适应分布式学习算法．理论分析和仿真结果表明,这种协作感知方法在保证检测性能的基础上,有效减少了协作通信开销,提高了次级用户吞吐量．     

城市公共交通监管博弈建模与仿真

针对城市公共交通存在违规运营的问题,对管理部门与城市公共交通企业间的博弈关系展开研究。根据公交企业和管理部门相应的策略集建立双方博弈关系的收益矩阵,给出了不同策略下双方的期望收益和整体平均收益,利用复制动态方程描述双方策略的变化速度,给出了纳什均衡,利用系统动力学理论构建城市公共交通监管问题的博弈模型,并对模型进行了仿真分析。分析结果表明:采用静态惩罚策略时,博弈双方除纳什均衡外不存在演化稳定策略,波动难以控制;采用动态惩罚策略时,博弈双方存在演化稳定策略,演化时间和幅值与最大惩罚收益正相关,且博弈的稳定态与初始状态无关。     

价值网络中企业协同竞争机制的演化博弈分析

在以信息和网络技术高度发达为特征的新经济时代,企业如何通过价值网络与相关利益群体进行协同竞争来获取竞争优势已成为学术界密切关注的焦点问题.运用演化博弈理论的方法,分析了价值网络模式下企业的协同竞争机制,构建了企业主体间协同竞争的演化博弈模型,并指出价值网络模式下企业协同竞争行为的博弈过程及特点.由此揭示出系统的初始状态、发展阶段及利益分配机制对演化博弈过程的影响机理,从而有助于提高企业在价值网络中的行为决策能力,对增强企业的市场竞争能力具有一定的指导价值.     

煤炭企业安全生产监管效能的博弈分析

针对目前煤炭企业安全生产监管效率低下情况，应用经济博弈论构建了两阶段博弈模型，探讨了安全监管制度层面的内在机理，对煤矿业主与安全监管部门之间动态博弈关系及安全监管部门与一线操作员工严格竞争博弈关系的策略集进行了深入分析，指出了实现上策均衡的条件；在此基础上求出了三方合作博弈的安全收益分配的可行解集及形成有效合作的公平解；结果表明：对监管者与操作者的处罚与安全收益公平分配相结合能够实现违章作业零概率，彻底杜绝违章行为.     

量子行为网络资源并行分配优化模型及其应用

通过建立博弈量子场数学模型,探讨了具有量子行为的分布式并行处理模型。利用博弈量子场由非平衡状态到平衡状态的演化过程与分布式系统演化过程之间的相似性,分析了量子力学系统与分布式演化模型之间的对应关系。建立了具有量子行为的分布式并行演化模型,并研究了模型的自治性、平衡态和稳定性。最后通过宽带网络的带宽分配问题中的应用实例,验证了模型的性能。     

供应链上企业间收益分配机制的博弈分析

以博弈论为研究视角,以当前在互联网上方兴未艾的手机应用程序商店的商业模式为例,探讨了在网络营销背景下,程序商店与程序开发者之间的收入分配模式的选择问题,并在此基础上分析了新型市场条件下供应链上企业间的收益分配机制。以非合作博弈理论为基础,研究了在不同销售量范围条件下,企业间博弈的均衡解,并把研究结果在无限期博弈情况下进行了扩展。     

电子化营销时代的合作广告策略研究——基于Stackelberg模型与战略联盟模型比较求解的视角

依电子商务与网络营销发展现状和趋势,选取一个制造商—电子化零售商供应链模型为分析框架,构造出了供应链总利润模型;假定渠道成员的行为分别符合Stackelberg模型与战略联盟模型,并分别进行求解;接着运用纳什模型建立了一种利润分享机制,以便更好的进行渠道协调,并按战略联盟模型确定了制造商在电子化零售商合作广告中的参与率及增量利润份额。研究结论表明：战略联盟模型比领导者—追随者模型能够取得更高的渠道协调效果,战略联盟会增强合作广告努力并提高供应链的总利润,其价值总是随着产品的网络适应性增加而增加;而且公平的利润分享机制能够确保战略联盟的成功并改善每一个供应链成员的利润状况。