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相关概念视频

Econometric Views (EViews)01:29

Econometric Views (EViews)

Econometric Views, often stylized as EViews, is a package that merges statistical analysis with econometric studies. It is designed to provide tools for time series analysis, forecasting, and econometric model simulation. The software originated from MicroTSP software and has evolved significantly since its inception in 1981. The history of EViews is marked by a continuous effort to enhance its computational speed and user interface. It was initially developed for large computing systems but...
Dynamic Equilibrium02:20

Dynamic Equilibrium

A reversible chemical reaction represents a chemical process that proceeds in both forward (left to right) and reverse (right to left) directions. When the rates of the forward and reverse reactions are equal, the concentrations of the reactant and product species remain constant over time and the system is at equilibrium. A special double arrow is used to emphasize the reversible nature of the reaction. The relative concentrations of reactants and products in equilibrium systems vary greatly;...
Global Regulatory Systems01:28

Global Regulatory Systems

Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
Social Exchange Theory01:26

Social Exchange Theory

As formulated by John Thibaut and Harold Kelley, Social Exchange Theory explains human relationships as economic-like exchanges that maximize rewards and minimize costs. This theory suggests that individuals engage in relationships to gain benefits and reduce burdens, similar to economic transactions. It has been widely applied to various types of relationships, including romantic, professional, and social interactions.Rewards and Costs in RelationshipsRelationship rewards include emotional...
Social Exchange Theory02:06

Social Exchange Theory

We have discussed why we form relationships, what attracts us to others, and different types of love. But what determines whether we are satisfied with and stay in a relationship? One theory that provides an explanation is social exchange theory. According to social exchange theory, we act as naïve economists in keeping a tally of the ratio of costs and benefits of forming and maintaining a relationship with others (Rusbult & Van Lange, 2003).
Exponential Equations for Modeling Growth01:26

Exponential Equations for Modeling Growth

Exponential models are essential for describing rapid, multiplicative changes in natural systems, such as population growth. When a population doubles at regular intervals, the process can be modeled using a suitable base. For instance, a bacterial culture that doubles every three hours follows the model n(t)=n0⋅2t/3, where n(t) is the population at the time t.A more general model uses the natural base e, especially for continuous growth. This takes the form n(t)=n0⋅ert, where r is the relative...

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相关实验视频

经济网络:新的挑战

Frank Schweitzer1, Giorgio Fagiolo, Didier Sornette

  • 1ETH Zurich, D-MTEC, Kreuzplatz 5, 8032 Zurich, Switzerland. fschweitzer@ethz.ch

Science (New York, N.Y.)
|July 25, 2009
PubMed
概括

了解经济网络对于应对危机至关重要. 需要新的方法来管理复杂的相互依存关系,并建立更强大的全球经济体系.

科学领域:

  • 经济学 经济学 经济学
  • 网络科学 网络科学
  • 复杂性科学 复杂性科学

背景情况:

  • 当前的经济危机凸显了全球相互依存的系统脆弱性.
  • 现有的经济模型难以预测和控制复杂的跨国网络,如信贷,投资,贸易和供应链.

研究的目的:

  • 开发一种新的方法来理解经济网络的结构和动态.
  • 通过强调系统复杂性来修订和扩展已建立的经济理论.
  • 为提高经济网络的稳定性和降低全球失败风险提供政策设计信息.

主要方法:

  • 分析经济网络结构和动态.
  • 复杂性科学原理在经济系统中的应用.
  • 发展网络相互依存的理论框架.

主要成果:

  • 确定复杂的经济网络中不稳定的关键驱动因素.
  • 一个分析系统风险的建议框架.
  • 对改善网络弹性政策干预措施的洞察力.

结论:

  • 专注于复杂性的方法对于理解和管理现代经济网络至关重要.

相关实验视频

  • 需要修订经济范式,以解决相互依存和促进全球稳定.
  • 加强网络稳定性可以减轻广泛经济失败的风险.