摘要：一(n， n ) 多党的量秘密分享的阀值计划古典或量消息基于分离的量 Fourier 变换被建议。在我们的建议计划，仅当所有参加者在音乐会工作，秘密消息，被使用前面的量 Fourier 变换编码并且由使用颠倒译码，以如此的一个方法被切开并且分享，它能在他们之中被重建。而且，我们也讨论这个协议怎么必须小心地为改正错误或一个不诚实的参加者被设计。安全分析证明我们的计划是安全的。另外，这个计划有它与量计算完全兼容的一个优点并且更容易在分布式的量认识到安全计算。

摘要：This paper describes a bi-level programming model that seeks to simultaneously optimize location and design decisions of facilities in a distribution system in order to realize company's maximal total profit subject to the constraints on the facility capacity and the investment *** the upper-level problem,twoechelon integrated competitive/uncompetitive capacitated facility location model,which involves facility location and design,is *** the lower-level problem,customer is assumed to patronize store based on facility utility which is expressed by service time cost in the store and its travel cost to ***'s facility choice behavior is presented by a stochastic user equilibrium assignment model with elastic *** such a distribution system design problem belongs to a class of NP-hard problem,a genetic algorithm(GA)-based heuristic procedure is ***,a numerical example is used to illustrate the application of the proposed model and some parameter sensitivity analyses are presented.

摘要：The kinematic accuracy of space manipulator determines whether the spacecraft performs normally or not. Problems pertaining to structural deformation have received increased attention in recent times. In the space manipulator systems, flexible arms and joints can induce drastic dynamic instabilities. In applications such as the space station, kinematic error due to structural deformation can jointly affect the performance characteristics. And it is crucial for accuracy control of space manipulator to establish a precision index. Here we analyze the dynamics characteristic of flexible space manipulator considering the hysteresis of harmonic reducer based on method of nonconstraint boundary modal. For the sake of describing the output accuracy, we integrate the method of analytic hierarchy process(AHP) to establish a comprehensive evaluation index. A numerical simulation is performed to analyze the nonlinear dynamic characteristics of space manipulator with harmonic reducer. With the analysis of accuracy assessment, the relation among the hysteresis angle, rigidity and output accuracy is revealed. Considering the elastic modulus of flexible space manipulator and the hysteresis angle of harmonic reducer, we conduct an evaluation of output characteristics of flexible space manipulator with the proposed comprehensive evaluation index. The accuracy evaluation of output characteristics based on the proposed comprehensive evaluation index is implemented in the initial stage of space manipulator's design, which can not only solve the problems existing in the design but also save cost savings for ground tests. The results can be used in designing and optimizing future space manipulators, which may provide valuable references for design and thermal control of the space manipulator.

摘要：带平衡约束的三维装载问题是指将一批具有不同尺寸和密度的匀质矩形物品合理装载于一个矩形箱子,要求在满足装载重心平衡的条件下来实现箱子空间利用最大化目标,本文设计了一种双层混合局域搜索算法(BHLS)对问题求解。算法将框架式布置思想和核心块生成策略结合起来,通过组合块的构造及装载系列的优化,确定各物品单元的装填顺序和布局位置。设计的双层算法的外层搜索负责合理装载模式的搜索,内层搜索用来确定各模式中的核心块及其最佳布局位置。使用包含物品尺寸差异强弱不同的标准算例进行试验,结果表明算法对带平衡约束的算例可使平均装载率从79.85%提高到86.45%,对不考虑平衡约束的算例也达到89.44%的较高平均装载率。

摘要：An innovative use of spatial sampling designs is here presented. Sampling methods which consider spatial locations of statistical units are already used in agricultural and environmental contexts, while they have never been exploited for establishment surveys. However, the rapidly increasing availability of geo- referenced information about business units makes that possible. In business studies, it may indeed be important to take into account the presence of spatial autocorrelation or spatial trends in the variables of interest, in order to have more precise and efficient estimates. The opportunity of using the most innovative spatial sampling designs in business surveys, in order to produce samples that are well spread in space, is here tested by means of Monte Carlo experiments. For all designs, the Horvitz-Thompson estimator of the population total is used both with equal and unequal inclusion probabilities. The efficiency of sampling designs is evaluated in terms of relative RMSE and efficiency gain compared with designs ignoring the spatial information. Furthermore, an evaluation of spatially balancing samples is also conducted.

摘要：Drawing on resource dependence theory, this paper develops and empirically tests a model for understanding how the implementation of building information modeling(BIM) in construction projects impacts the performance of different project participating organizations through improving their interorganizational collaboration capabilities. Based on two sets of survey data collected from designers and general contractors in BIMbased construction projects in China, the results from partial least squares analysis and bootstrapping mediation test provide clear evidence that BIM-enabled capabilities of information sharing and collaborative decision-making as a whole play a significant role in determining BIMenabled efficiency and effectiveness benefits for both designers and general contractors. The results further reveal that designers and general contractors benefit from project BIM implementation activities significantly nonequivalently, and that this non-equivalence closely relates to the different roles played by designers and general contractors in BIM-enabled interorganizational resource exchange processes. The findings validate the resource dependence theory perspective of BIM as a boundary spanning tool to manage interorganizational resource dependence in construction projects, and contribute todeepened understandings of how and why project participating organizations benefit differently from the implementation of interorganizational information technologies like BIM.

摘要：关键点政策决策者在设计改善医疗的政策时,需要超越传统的财务激励。卫生专业人员受到一系列因素的激励,既有外在因素,也有内在因素。专注于这些其他激励措施或对激励进行组合可能更为有效。Mylène Lagarde、Luis Huicho和Irene Papanicolas探讨了政策决策者可以采取的不同政策激励医务人员改善医疗质量。

摘要：与以往纯粹基于代理理论研究CEO薪酬激励问题不同,本文同时考虑乘员理论和制度理论等,从多视角研究上市公司治理绩效。我们采用2005～2008年沪深上市公司面板数据,按全样本、私人与国有控股、国有控股与集体等对照组进行混合回归(Pooled Regress)分析,研究证实中国上市公司CEO薪酬激励与公司业绩显著正相关,董事会部分特征与薪酬机制设计相关;被激励后的CEO在外部治理环境监控下会进一步改善公司业绩,产生激励后效,股权集中度有正向促进作用,但董事会特征与激励后效无关。研究揭示目前董事会受制于代理问题,致力于改善CEO薪酬激励不足,公司业绩改善主要来自于政策、制度变革等外部公司治理,尤其国有控股公司制度改革效应和乘员主义突出,但董事会内部绩效治理仍较弱;这对改善中国CEO薪酬机制设计及内部治理具有积极意义。论文进一步采用固定效应回归(Fixed-effectRegress)、两阶段最小二乘回归法(Two Stage Least Squares Regress)和薪酬灵敏度分析后依然支持该结论。