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121.
The Internet and the Web are evolving to a platform for collaboration, sharing, innovation and user-created content—the so-called Web 2.0 environment. This environment includes social and business networks, and it is influencing what people do on the Web and intranets, individually and in groups. This paper describes the Web 2.0 environment, its tools, applications, characteristics. It also describes various types of online groups, especially social networks, and how they operate in the Web 2.0 environment. Of special interest is the way organization members communicate and collaborate mainly via wikis and blogs. In addition, the paper includes a proposed triad relational model (Technology–People–Community) of social/work life on the Internet. Particularly, social/work groups are becoming sustainable because of the incentives for participants to connect and network with other users. A discussion of group dynamics that is based on the human needs for trust, support, and sharing, regardless if the setting is a physical or virtual one, follows. Finally, future research directions are outlined.  相似文献   
122.
The aggregate average wage is often used as an indicator of economic performance and welfare, and as such often serves as a benchmark for changes in the generosity of public transfers and for wage negotiations. Yet if economies experience a high degree of (non‐random) fluctuation in employment, the composition of the employed population will have a considerable effect on the computed average. In this paper we demonstrate the extent of this problem using data for Poland for the period 1996–2003. During these years the employment rate in Poland fell from 51.2 percent to 44.2 percent and most of this fall occurred between the end of 1998 and the end of 2002. We show that about a quarter of the growth in the average wage during this period could be attributed purely to changes in employment.  相似文献   
123.
Since the 1950s economists have applied game-theoretical concepts to a wide variety of economic problems. The Nash equilibrium concept has proven to be a powerful instrument in analyzing the outcome of economic processes. Since the late 1980s economists have also shown a growing interest in the application of evolutionary game theory. This paper discusses the main concepts of evolutionary game theory and their applicability to economic issues. Whereas traditional game theory focusses on the static Nash equilibria as the possible outcomes of the game, evolutionary game theory teaches us to explicitly model the behavior of individuals outside equilibrium. This may provide us with a better understanding of the dynamic forces within a society of interacting individuals.  相似文献   
124.
This paper gives a complete characterization of neutrally stable strategies for sender–receiver games in the style of Lewis, or Nowak and Krakauer [Lewis, D., 1969. Convention: A Philosophical Study. Harvard Univ. Press, Cambridge, MA; Nowak, M., Krakauer, D., 1999. The evolution of language. Proc. Nat. Acad. Sci. USA 96, 8028–8033]. Due to the dynamic implications of neutral stability, the replicator dynamics of this model does not necessarily lead to the rise of an optimal signaling system, where every state of the world is bijectively linked to one signal and vice versa, but it can be trapped in suboptimum situations where two (or more) signals are used for the same event, or two (or more) events are associated with one and the same signal.  相似文献   
125.
商业聚集促进了区域商业经济的持续增长,提升了商业企业的经济效益。聚集到底给企业带来了多大的经济效应?企业之间应该如何协调发展?通过非线性动力学建模、分析,解决了这两个实际问题,为商业企业决策提供理论参考。  相似文献   
126.
Competitive dynamics research, despite progress, lacks a conceptual framework that can extend the field's reach to address today's environment. Increasing stakeholder power and globalization are but two of the organizational and economic forces compelling a broader conceptualization of competition. Our framework expands competitive dynamics along five dimensions—aims of competition, mode of competing, roster of actors, action toolkit, and time horizon of interaction—that prove useful for contrasting the rivalrous and competitive‐cooperative modes and a new approach we call relational competition. We draw conjectures about the moderators, such as industry and culture, that determine the appropriateness of these forms of interaction, and conclude by relating our method to three discrete perspectives: the configurational, transaction cost, and stakeholder views. Copyright © 2014 John Wiley & Sons, Ltd.  相似文献   
127.
采用系统动力学的方法构建了一个基于电子商务平台的退货模型,分析了退货政策与电子商务企业的各个运营指标之间的定量关系,并运用Vensim PLE软件进行仿真实验。研究结果表明:1退货政策宽松度越高,退货率和销售率都会相对上升,这与现实相符;2当网络零售商采取有时间限制的退货策略时,如果其退货比例和业内基本一致,其可以通过提供较宽松的退货政策来提高销售量。  相似文献   
128.
肖增敏  杨莉  王莉 《价值工程》2015,(17):249-253
医疗服务费是医务人员技术劳动价值的体现,调整医疗服务费是当前医疗改革的焦点。本文应用系统动力学方法通过分析医疗服务费调整通过提升医师技术价值从而对医务人员诊疗行为和患者就医行为以及医药企业营销行为的影响,构建医疗服务费对医改影响的因果关系图,分析了医疗服务费调整的关键作用,即促使医方合理用药,提高诊疗质量;促使患者就诊分流,满意度提高;促使医药企业以药品质量赢得市场。最后本文根据研究结论提出相关建议:坚定医疗服务费改革的信心,并及时采取保障措施,一是医院管理制度上保障医务人员价值实现,二是加强基层医疗资源配置吸纳患者的分流。  相似文献   
129.
This paper provides a normative framework for the assessment of the distributional incidence of growth. By removing the anonymity axiom, such framework is able to evaluate the individual income changes over time and the reshuffling of individuals along the income distribution that are determined by the pattern of income growth. We adopt a rank dependent social welfare function expressed in terms of initial rank and individual income change and we obtain partial and complete dominance conditions over different growth paths. These dominance conditions account for the different components determining the overall impact of growth, that is the size of growth and its vertical and horizontal incidence. We then provide an empirical application for Italy: this analysis shows the distributional impact of the recent economic crisis suffered by the Italian populaltion.  相似文献   
130.
This paper explores the effects of shifts in interest rates on corporate leverage and default in the context of a dynamic model in which the link between leverage and default risk comes from the lower incentives of overindebted entrepreneurs to guarantee firm survival. The need to finance new investment pushes firms' leverage ratio above some state‐contingent target toward which firms gradually adjust through earnings retention. The response to interest rate rises and cuts is both asymmetric and heterogeneously distributed across firms. Our results help rationalize some of the evidence regarding the risk‐taking channel of monetary policy.  相似文献   
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