Trade network centrality
Bilateral trade flows for a product are analysed as a network to identify exporters and transit hubs whose disruption would affect the most importers.
GCRI · 贸易与战略资源
Network science represents trade and supply as networks of countries, firms and routes. In this field it measures concentration and centrality, finds hidden dependencies in deeper tiers, and simulates how a disruption at one node spreads through supply networks.
Network science and contagion study how the structure of connections among entities shapes the spread of failures, information and disease. It provides tools to analyse interdependent infrastructure, supply chains and financial 系统. In trade, resources and supply chains and industry and robotics, network science identifies critical nodes and pathways through which shocks propagate across sectors. It informs targeted protection and diversification to limit cascades. The canonical description is on STEM Commons.
Bilateral trade flows for a product are analysed as a network to identify exporters and transit hubs whose disruption would affect the most importers.
Input-output tables and firm data are combined to trace dependence beyond the first tier, revealing shared upstream suppliers behind apparently diversified sourcing.
A shock is applied to a supplier node and propagated through the network with stated substitution rules, estimating which downstream sectors lose supply first.
Night lights, population density and land cover over the Strait of Malacca, from NASA GIBS. Each layer carries its own date.
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图层 3
本页的活动与危害
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最新可用
NASA GIBS / EOSDIS · ASTER GDEM (METI, NASA) · Blue Marble (NASA) · © OpenStreetMap贡献者 (ODbL) · Natural Earth
正在加载最新的NASA影像。
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活动与危害,以马六甲海峡为取景。NASA 发布的卫星和模型产品,各带自己的日期。它们是指标,而非对任何地点的评估。
图层与日期
Datasets and records used by network science and contagion on this platform, with the role each plays and the label its values carry. Sources are listed in 来源登记册.
| 数据 | 角色 | 标签 |
|---|---|---|
| BACI and UN Comtrade | Trade networks | 已发布统计 |
| OECD ICIO tables | Inter-industry links | 估算 |
| Firm supply chain data | Firm-level links | 已声明 |
| Vessel tracking | Route networks | 观测 |
团队遵循该方法时会使用的界面:其指标、状态与决策。名称为示例,数值仅作示意。
Trade and resources · Network science for supply chains · Run R-8923
nodes: assets · edges: dependencies
| N3 | 0.27 | 7 | Critical |
| N4 | 0.36 | 4 | 正常 |
| N5 | 0.15 | 11 | 正常 |
| N6 | 0.39 | 10 | 正常 |
Models are checked by reproducing observed cascades and outbreaks. Robustness of results to missing or uncertain links is tested.
| 核查 | 如何开展 |
|---|---|
| Re-export correction | Flows are checked for re-exports and mirror discrepancies |
| Sensitivity to substitution | Propagation results are tested under different substitution assumptions |
| Event validation | Simulations are compared with documented past disruptions |
Network data are often incomplete or confidential. Static network models may miss adaptive behaviour during cascades.
一个部门的产出损失通过技术系数传导至其供应商和客户,并按您设定的速率恢复;这些系数是教学数值,不是国民账户。这是带有明示示意数值的教学模型,不是预测。本页地图显示马六甲海峡;模型本身不与任何地点绑定。
控制措施
读数
| 部门 | 峰值不可运行性(%) | 产出权重(%) |
|---|---|---|
| 农业 | 30.19 | 23.4 |
| 能源 | 0.11 | 16.0 |
| 制造业 | 0.66 | 26.4 |
| 交通与港口 | 4.68 | 10.9 |
| 贸易 | 2.97 | 11.9 |
| 服务 | 0.78 | 11.4 |
The model runs on the teaching values set by the controls. To calibrate it for a place, read it against these admitted layers and series, which this page’s map can draw:
贯穿六大支柱,由 Nexus Consortium 牵头
Assembled from the Nexus Standards area profile 供应链与贸易风险: the hazards it names, the 系统 and sectors that carry the loss, the controls that dampen it and the data that observe it. Choose the components, pick an initiating hazard and step through the cascade. The Map view places the run on an example geography with open data. Every coupling weight is a stated assumption you can change. A teaching model, not a forecast, an assessment or a certification. To model a place of your own choosing, open the full System Builder.
控制措施
NS-0 章程与原则NS-3 风险记录 UNI(语法、旧编码对照、分配机构)NS-9 情境 UNI(部署、实例、计划实例)NS-10 政策和条款(机器可读的义务:定义、约束、评估和执行)NS-11 验证与监测(证据、证明、零信任符合性观测)NS-12 软件、模型和 AI/ML 制品(供应链、模型卡、数据集说明)NRS-H60 危害类别:供应链与流动中断(NHS-1 sys.supply-chain)NRS-X4 贸易、运输与供应链风险NRS-H89 危害类别:交通网络中断(NHS-1 infra.mobility)NRS-K38 领域包概况:供应链与贸易(DOMAIN-038)NRS-H43 危害族:畜牧业和水产养殖动物疫病(NHS-1 health.animal-health)NRS-M10 方法结构:市场、贸易与供应链观测
示例地理范围
系统科学与建模 stewards network science and contagion for the Consortium and reviews how it is applied across platforms.
模型、其假设、数据和不确定性,以科学家或工程师会核查的形式呈现。结构遵循已发表的方法。所取数值仅为示意,不是研究发现。
The couplings between the systems in network science for supply chains: signs of influence, a reinforcing and a balancing loop, and cross-links where stress jumps.
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