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991.
陈湘青 《世界标准化与质量管理》2006,12(7):21-24
顾客满意度指数是近年来许多国家和地区积极开展研究和采用的一种新的经济指标。本文在已有研究的基础上,结合我国消费者行为的特点,构建了一种新的顾客满意度指数测评模型。该模型在期望不一致模式的基础上,同时考虑了公平模式和需要不一致模式,引入感知公平和感知价格变量,并为这些结构变量设计了相应的观测变量和路径关系,建立了由顾客满意、企业形象、感知价格到顾客忠诚三条路径关系,改变了传统模型中从顾客满意到顾客忠诚路径过于单一的情况。 相似文献
992.
This paper investigates the quantile-based spillover effects among 17 stock markets from January 1993 to January 2022, utilizing a quantile approach based on the variance decomposition of a quantile vector autoregression (QVAR) model. Compared with the traditional mean-based spillover measures, this new quantile approach allows for a nuanced investigation of spillovers at every quantile and capture spillovers under extreme events. The results show that: (1) the total spillover is high and exhibits strong time-varying characteristics, and the tail spillover is higher and more complex in scale and direction; (2) the spillover at each quantile level shows an upward trend, especially during the 2008 crisis and the COVID-19 epidemic; (3) developed countries (or regions) are the net exporters of stock market spillovers, while the developing countries are the net importers; and (4) the 17 stock markets constitute different local financial networks, which may be related to economic conditions and geographical location. 相似文献
993.
Iain L. MacDonald 《Revue internationale de statistique》2014,82(2):296-308
There is by now a long tradition of using the EM algorithm to find maximum‐likelihood estimates (MLEs) when the data are incomplete in any of a wide range of ways, even when the observed‐data likelihood can easily be evaluated and numerical maximisation of that likelihood is available as a conceptually simple route to the MLEs. It is rare in the literature to see numerical maximisation employed if EM is possible. But with excellent general‐purpose numerical optimisers now available free, there is no longer any reason, as a matter of course, to avoid direct numerical maximisation of likelihood. In this tutorial, I present seven examples of models in which numerical maximisation of likelihood appears to have some advantages over the use of EM as a route to MLEs. The mathematical and coding effort is minimal, as there is no need to derive and code the E and M steps, only a likelihood evaluator. In all the examples, the unconstrained optimiser nlm available in R is used, and transformations are used to impose constraints on parameters. I suggest therefore that the following question be asked of proposed new applications of EM: Can the MLEs be found more simply and directly by using a general‐purpose numerical optimiser? 相似文献
994.
本文回顾了近二十年来扣件式钢管脚手架的各种计算模型,并进行了对比和思考。得出了只有半刚性节点模型才真正触及了扣件连接这一本质特点,建议采用考虑了节点半刚性的框架模型进行扣件式钢管脚手架的研究和计算,同时考虑其它因素的影响。本文同时也对扣件式钢管脚手架极限承载力的进一步研究进行了展望。 相似文献
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农产品品牌构建是当今发展农产品行业的一条有效路径,文章结合许昌腐竹特定行业的特点,采用解释结构模型的方法,提出腐竹品牌构建的影响因素间的相互关系。 相似文献
998.
基于不对称Nash协商模型的多Agent造船供应链协商机制研究 总被引：1，自引：0，他引：1
供应链成员企业之间的协商是供应链管理的一个重要方面,供应链上节点企业通过协商才能进行有效的合作。本文在分析船舶制造企业与供应商协商机制的基础上,将多Agent技术运用到合作企业的协商过程中,利用Nash不对称协商模型,为造船供应链企业的利益分配提供有效参考。 相似文献
999.
Elisabeth Naima Mikkelsen Barbara Gray Anne Petersen 《Journal of Management Studies》2020,57(7):1355-1383
A critical but overlooked issue in Weick’s seminal work, The Social Psychology of Organizing (1969/1979), concerns ‘the heat’ of organizing processes, namely, the underground emotional processes underpinning the organizing of conflictual work relationships. We present a qualitative case study of psychiatric agencies mandated by public policy to collaborate but instead engaged in persistent conflict despite its deleterious effects on their working relationship and on the wellbeing of the clients they intended to serve. To explain these conflictual features of organizing, we integrate Weick’s organizing theory with systems psychodynamics to deepen the understanding of emotions in organizing, specifically the motivational forces underpinning sensemaking and actions between interacting psychiatric agencies. This integration of theories reveals a critical feature of the relationship between the conscious and unconscious organizing processes: When a threat is involved, sensemaking and action are overtaken by social defences, resulting in dysfunctional organizing of the primary task. Drawing on these findings, we enrich Weick’s seminal work by developing a model that portrays organizing as the ritualized interaction of emotions, sensemaking and behavioural responses. 相似文献
1000.
本文研究了网络财务报告披露模式问题。文章首先回顾和评价现有的关于网络财务报告披露模式的观点即经济事项模式、数据库报告模式、交换式按需报告模式以及多层面报告模式,在此基础上提出了业务事件驱动报告模式的基本原理。文章最后比较了业务事件驱动模式与经济事项模式的异同。 相似文献