凝聚随机算子的一个不动点定理

利用拓扑度的基本性质，给出了凝聚随机算子的一个不动点定理，由此推广了Altman定理，为进一步研究随机算子方程解的存在唯一性及解的近似方法提供了一个有力的工具。     

控股股东与经营者一体化存在的问题及其治理

文章通过对控股股东与高层管理者的关联性描述,指出了控股股东与经营者的一体化趋势;然后从产权理论、交易费用理论和控制权收益三个角度对这种趋势进行原因分析;最后针对一体化带来的负面影响提出相应的对策。     

电信运营商移动互联网运营模式研究

移动互联网是全球电信运营商未来重要的发展方向，论文从产业价值链角度对电信运营商发展移动互联网的运营模式进行研究，了解各种运营模式的特点，从收益角度分析各种模式的利弊，提出渠道模式将成为主流的运营模式，希冀对电信运营商发展移动互联网带来启示作用。     

AN ALGORITHMIC APPROACH TO BAYESIAN LINEAR MODEL CALCULATIONS

A framework is described for organizing and understanding the computations necessary to obtain the posterior mean of a vector of linear effects in a normal linear model, conditional on the parameters that determine covariance structure. The approach has two major uses; firstly, as a pedagogical tool in the derivation of formulae, and secondly, as a practical tool for developing computational strategies without needing complicated matrix formulae that are often unwieldy in complex hierarchical models. The proposed technique is based upon symbolic application of the sweep operator SWP to an appropriate tableau of means and covariances. The method is illustrated with standard linear model specifications, including the so-called mixed model, with both fixed and random effects.     

Cayley-Klein模型在研究罗氏平面直线中的应用

由于平行公理不同，导致罗氏平面直线与欧氏平面直线有很大差异。本文利用Cayley-Klein模型探讨罗氏平面直线的特性。     

Conservatism of the Accident Sequence Evaluation Program HRA Procedure

This paper presents a limited assessment of the conservatism of the Accident Sequence Evaluation Program (ASEP) human reliability analysis (HRA) procedure described in NUREG/CR-4772. The data for this study are derived from simulator examination reports from the NRC requalification examination cycle for nuclear power plant operators. The ASEP procedure was used to estimate human error probability (HEP) values for critical tasks, and the HEP results were compared with the failure rates observed in the examinations. The ASEP procedure was applied by PNNL operator license examiners who supplemented the limited information in the examination reports with expert judgment based upon their extensive simulator examination experience. Comparison of the average of the ASEP HEP values with the fraction of the population actually failed and demonstrated that the ASEP HEP values are larger (conservative) by a statistically significant average factor of two. Partitioning of tasks into subgroups based on the ASEP HEP values and comparison of the subgroup average ASEP HEP values with observed subgroup failure rates showed little or no conservatism for small ASEP HEP values, but considerable conservatism for larger ASEP HEP values.     

Iterated full partitions

Algebraic calculations that depend upon a full partition can be automated through the use of an operator P for the derivation of such a partition. Calculations that require the repeated use of P are automated by simply iterating the operator. The resulting output is general and contains sufficient structure to identify the result of a calculation for a variety of settings.     

科技英语文体中的类比与隐喻

类比和隐喻是认知语言学中常见的两种语义建构机制,其最终目的是降低认知难度,因此经常被运用在以阐释为目的的科技英语文体中。两者常因映射机制的相似性而被混淆。然而,从结构映射及概念隐喻理论可以看出,类比侧重系统结构的映射对接,而隐喻侧重概念特征单向投射。即使显性或隐性地共同呈现出“A is B”的语言结构,在具体语境中也有类比或隐喻的侧重性,而非完全雷同,但在某些语境下又可能存在相互补充的糅合关系。     

冲动性购买情境下消费者后悔影响的实证研究

采用情境投射与普通问卷相结合的多样化研究方法,探讨冲动性购买负面后果的影响以及不同归因的消费者受影响程度是否不同。结果表明,如果第一次冲动性购买行为带来负面后果,再次遇到类似情境时消费者的购买冲动性和认知评价都会受到较大影响,他们往往降低自身的购买冲动性,倾向于不再购买,并且对下一次购买具有负面的认知评价。同时,不同归因的消费者对再次冲动性购买的认知评价存在差异。     

投射偏差视角下的服务类品牌消费--以农村信息消费支付意愿为例

现将投射偏差模型框架引入服务类耐用品消费者均衡中,从理论上阐述投射偏差如何会导致消费者在服务类商品消费时无法达到效用最大化。研究采用实验和实地调研的方法,一共有251名人员参与了实验与调研,分析上网体验对于未来一年宽带的支付意愿影响。研究结果发现,人们在体验上网前后对于信息的认知状态有显著差异,没有上过网的人会基于当前的认知状态而低估未来一年宽带的效用,其支付意愿明显低于上过网的人,投射偏差在服务类耐用品的消费均衡中发挥了重要作用。