当前采访工作面临的挑战与对策

本文对高校图书馆采访工作在当前形势下存在的问题进行了分析 ,并对今后采访工作如何开展 ,提出了一些看法与对策     

基于SSH2的教材征订系统的设计与实现

针对高校教材征订的实际情况，利用MVC模式，采用分层思想，以SSH2和Oracle等技术设计并实现教材征订系统.文中探讨了系统的主要功能和整体架构设计，并进行系统实现.测试结果表明，系统具有功能完善、稳健性强以及可移植好等优点，可以满足一般高校教材征订的需要.     

男子网球运动员运动素质选材中的优劣序数法

针对网球运动员选材的综合评判问题，运用优劣序数法，建立了大学生男子网球运动员运动素质选材的多指标评价模型，并结合某高校的应用实例给予分析说明，为运动员选材提出了一种比较科学、客观、合理的选材方法．     

一类非单调二元算子新的不动点定理

利用锥理论和非对称迭代方法,讨论了不具有连续性和紧性条件的非单调二元算子方程解的存在唯一性,并给出了迭代序列收敛于解的误差估计,所得结果是某些已知结果的本质改进和推广.     

基于模糊偏序关系的软件测试评价方法

讨论了模糊理论在软件测试质量评价方面的可行性;提出了软件测试质量评价指标体系的概念和软件测试质量评价方法,即基于模糊偏序关系的评价方法;对该方法的优缺点及适用条件进行了分析;通过实例计算验证了该方法在评价软件测试质量方面的有效性。     

考虑参照依赖与产品展示的体验式商品定价与订购策略

消费者在购买体验式商品时面临着产品价值的不确定性，因而会产生参照依赖行为。本文研究了考虑消费者参照依赖行为的定价与订购问题，并分析了产品展示策略的影响。研究发现，给定产品满足率时，只有当消费者获得高价值的概率大于某个临界值时，参照依赖下的最优价格才会高于没有参照依赖下的最优价格，并且产品价值维度与产品价格维度的参照依赖对最优价格起着相反的作用。进一步给出了最优订购量满足的条件，并发现在一定条件下最优价格随着订购量的增大而增大。当企业采取产品展示策略之后，会产生两方面的效应，一是消费者数量减少，二是剩余消费者的保留价格增大，此时最优价格随着展示系数的增大而增大。最后，通过数值分析得到了更多的管理启示。     

New tests for stochastic order with application to case control studies

It is shown that if a binary regression function is increasing then retrospective sampling induces a stochastic ordering of the covariate distributions among the responders, which we call cases, and the non-responders, which we call controls. We also show that if the covariate distributions are stochastically ordered then the regression function must be increasing. This means that testing whether the regression function is monotone is equivalent to testing whether the covariate distributions are stochastically ordered. Capitalizing on these new probabilistic observations we proceed to develop two new non-parametric tests for stochastic order. The new tests are based on either the maximally selected, or integrated, chi-bar statistic of order one. The tests are easy to compute and interpret and their large sampling distributions are easily found. Numerical comparisons show that they compare favorably with existing methods in both small and large samples. We emphasize that the new tests are applicable to any testing problem involving two stochastically ordered distributions.     

An Influence Function Approach to Describing the Skewness of a Distribution

Skewness, like kurtosis, is a qualitative property of a distribution. A comparison of several measures of skewness of univariate distributions is carried out. Hampel's influence function is used to clarify the differences and similarities among these measures. A general concept of skewness as a location- and scale-free deformation of the probability mass of a symmetric distribution emerges. Positive skewness can be thought of as resulting from movement of mass at the right of the median from the center to the right tail of the distribution together with movement of mass at the left of the median from the left tail to the center of the distribution.     

多模玻色系统指数二次型算子有序乘积形式间的转换

讨论了有关多模玻色系统指数二次型算子的三条结论，据此，可以方便地实现该类算子的有序乘积同其逆算子的有序乘积之间，以及该类算子的正、反正规乘积形式之间相互转换．     

Dispersion-diminishing transformations

Let D(σ) consist of matrices congruent to and dominated by a given matrix σ , and let T(σ) be the corresponding congruent transformations. These classes are characterized and their properties studied when σ is positive definite. Dispersion orderings are considered, including dispersion-diminishing linear transformations, concentration properties of which are shown. Arbitrary linear transformations are decomposed into contractions, isometries and dilations on subspaces relative to Mahalanobis norms. Applications are noted in statistical process control and linear inference