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通信网络用户涉密信息安全动态预警仿真 被引量:3
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作者 王梦晓 刘学军 操凤萍 《计算机仿真》 北大核心 2023年第5期422-425,476,共5页
大规模通信网络部署难度大,网络运维复杂,易产生安全漏洞造成通信用户双方身份信息的泄露。为实现大规模通信网络用户个人通信隐私及对涉密通信更好的保护,提出大规模通信网络涉密信息安全动态预警算法。算法首先采用模糊聚类法处理网... 大规模通信网络部署难度大,网络运维复杂,易产生安全漏洞造成通信用户双方身份信息的泄露。为实现大规模通信网络用户个人通信隐私及对涉密通信更好的保护,提出大规模通信网络涉密信息安全动态预警算法。算法首先采用模糊聚类法处理网络涉密信息,得到相应的特征流量。其次根据样本估计理论确定出具有异常状态的特征流量区域。最后采取妥协率法构建决策者模型,通过对异常特征流量的风险要素排序,完成大规模通信网络涉密信息安全的动态预警。通过实验对比测试可知,上述方法的涉密信息安全动态预警耗时平均为12.47ms,准确率高于90%,误报率可控制在5%以下。以上数据证明了所提出的方法应用性能具有明显优势。。 展开更多
关键词 信息模糊聚类 固定阈值 拉格朗日函数 样本估计理论 决策者模型
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For a Still “Social” Housing: The Fluent Governance
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作者 Michelina Venditti Gianluca Antonucci +1 位作者 Camillo Stefano Pasott Simone di Zio 《Journal of Civil Engineering and Architecture》 2015年第8期938-950,共13页
Network governance, widely used as theoretical model in investigations on social housing, is not free from critiques, first of all, for the fact that it has a uni-directionality of bottom-up processes, when oriented t... Network governance, widely used as theoretical model in investigations on social housing, is not free from critiques, first of all, for the fact that it has a uni-directionality of bottom-up processes, when oriented to public deliberation, or top-down when decision-makers are technical experts at the political level. Given the new complexity of the social housing issue and the considered limits of the network governance, this work aims at looking for a possible different theoretical framework able to give different tools to simplify decision making processes without any alteration of any basic decisional element. The contribution given by this work is the proposition of what has been called "fluent governance" as a framework of decision making able to represent the whole spectrum of interventions in the process, also taking into account aspects not captured by standard models. The paper reports an experimentation of the proposed model conducted in Italy in the field of renovating social housing policy. 展开更多
关键词 Govemance social housing structural analysis network governance decision making.
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Distribution of Market Share in the World Soft-Drink Industry
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作者 Femando Buendia Cristina Eccius 《Journal of Physical Science and Application》 2013年第2期123-126,共4页
The distribution of market shares within an industry is a relevant performance measure for managers and policy makers, for it allow to determine whether a given industry is competitive or not. Usually, the perfect com... The distribution of market shares within an industry is a relevant performance measure for managers and policy makers, for it allow to determine whether a given industry is competitive or not. Usually, the perfect competition model is the reference to judge the efficiency of markets. However, there is enough empirical evidence that shows that one of the most evident features of global firms is that both their size and market are Zipf-distributed. In this paper, we show that the distribution of market shares in the world cola-drink market is skewed, but it does not follow Zipf's law, thus it is inadequate to generalize it to any kind of market. 展开更多
关键词 Market share Zipf distribution market power.
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Research on the Decision Model to Stakeholders in PPP Projects
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作者 ZHANG Wei 《International English Education Research》 2016年第4期90-92,共3页
Aiming at the public sector and the private sector in PPP projects as the research objects, the two core participants investment decision model is established by using option game thinking. First, based on the option ... Aiming at the public sector and the private sector in PPP projects as the research objects, the two core participants investment decision model is established by using option game thinking. First, based on the option game features PPP projects have, the paper proposes some research hypotheses on value, income, cost for the option. Second, on the basis of the decision path of a multi-stage binary tree model, respectively for the public sector and the private sector, the paper builds up utility functions, the cost-input model and the contract decision model. It indicates that by the use of growth options in the shortened contract period, the private sector can still ensure the construction quality of the PPP project. Finally, the validity of the model in the PPP project agreement and the investment decision process is verified by the case analysis. 展开更多
关键词 PPP projects STAKEHOLDERS MULTI-STAGE Option game
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Self-deception can evolve under appropriate costs 被引量:2
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作者 Juan Camilo RAMiREZ James A. R. MARSHALL 《Current Zoology》 SCIE CAS CSCD 2015年第2期382-396,共15页
Apparent biases in decision making by animals, including humans, seem to present an evolutionary puzzle, since one would expect decisions based on biased (unrealistic) information to be suboptimal. Although cognitiv... Apparent biases in decision making by animals, including humans, seem to present an evolutionary puzzle, since one would expect decisions based on biased (unrealistic) information to be suboptimal. Although cognitive biases are hard to diag- nose in real animals (Marshall et al., 2013b), we investigate Trivers' proposal that individuals should self-deceive first in order to better deceive others (Trivers, 2011). Although this proposal has been scrutinized extensively (Bandura et al., 2011) it has not been formally modelled. We present the first model designed to investigate Trivers' proposal. We introduce an extension to a re- cent model of the evolution of self-deception (Johnson and Fowler, 2011). In the extended model individuals make decisions by taking directly into account the benefits and costs of each outcome and by choosing the course of action that can be estimated as the best with the information available. It is shown that in certain circumstances self-deceiving decision-makers are the most evolutionarily successful, even when there is no deception between these. In a further extension of this model individuals addi- tionally exhibit deception biases and Trivers' premise (that effective deception is less physiologically costly with the aid of self-deception) is incorporated. It is shown that under Trivers' hypothesis natural selection favors individuals that self-deceive as they deceive others . 展开更多
关键词 SELF-DECEPTION DECEPTION OVERCONFIDENCE Cognitive biases Optimal decision-making Optimal behavior
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